diff --git a/include/decl.h b/include/decl.h
index f66c0f5a8..7a34be6f1 100644
--- a/include/decl.h
+++ b/include/decl.h
@@ -1082,7 +1082,6 @@ struct instance_globals_y {
 
     /* decl.c */
     int y_maze_max;
-    struct monst youmonst;
 
     /* pline.c */
     /* work buffer for You(), &c and verbalize() */
diff --git a/include/display.h b/include/display.h
index fc52eac41..beac064c0 100644
--- a/include/display.h
+++ b/include/display.h
@@ -253,11 +253,11 @@
         ((int) U_AP_TYPE == M_AP_NOTHING)                               \
         ? hero_glyph                                                    \
         : ((int) U_AP_TYPE == M_AP_FURNITURE)                           \
-          ? cmap_to_glyph((int) gy.youmonst.mappearance)                \
+          ? cmap_to_glyph((int) u.umonst->mappearance)                  \
           : ((int) U_AP_TYPE == M_AP_OBJECT)                            \
-            ? objnum_to_glyph((int) gy.youmonst.mappearance)            \
+            ? objnum_to_glyph((int) u.umonst->mappearance)              \
             /* else U_AP_TYPE == M_AP_MONSTER */                        \
-            : monnum_to_glyph((int) gy.youmonst.mappearance, Ugender)))
+            : monnum_to_glyph((int) u.umonst->mappearance, Ugender)))
 
 /*
  * NetHack glyphs
diff --git a/include/hack.h b/include/hack.h
index f655a8961..1a8e07f14 100644
--- a/include/hack.h
+++ b/include/hack.h
@@ -464,7 +464,7 @@ enum encumbrance_types {
 };
 
 struct entity {
-    struct monst *emon;     /* youmonst for the player */
+    struct monst *emon;     /* u.umonst for the player */
     struct permonst *edata; /* must be non-zero for record to be valid */
     int ex, ey;
 };
@@ -1284,7 +1284,7 @@ typedef uint32_t mmflags_nht;     /* makemon MM_ flags */
 #define FM_FMON 0x01    /* search the fmon chain */
 #define FM_MIGRATE 0x02 /* search the migrating monster chain */
 #define FM_MYDOGS 0x04  /* search gm.mydogs */
-#define FM_YOU 0x08     /* check for gy.youmonst */
+#define FM_YOU 0x08     /* check for u.umonst */
 #define FM_EVERYWHERE (FM_YOU | FM_FMON | FM_MIGRATE | FM_MYDOGS)
 
 /* Flags to control pick_[race,role,gend,align] routines in role.c */
diff --git a/include/monst.h b/include/monst.h
index 8f189b4b7..6b3262706 100644
--- a/include/monst.h
+++ b/include/monst.h
@@ -67,8 +67,8 @@ enum m_ap_types {
 
 #define M_AP_TYPMASK  0x7
 #define M_AP_F_DKNOWN 0x8
-#define U_AP_TYPE (gy.youmonst.m_ap_type & M_AP_TYPMASK)
-#define U_AP_FLAG (gy.youmonst.m_ap_type & ~M_AP_TYPMASK)
+#define U_AP_TYPE (u.umonst->m_ap_type & M_AP_TYPMASK)
+#define U_AP_FLAG (u.umonst->m_ap_type & ~M_AP_TYPMASK)
 #define M_AP_TYPE(m) ((m)->m_ap_type & M_AP_TYPMASK)
 #define M_AP_FLAG(m) ((m)->m_ap_type & ~M_AP_TYPMASK)
 
diff --git a/include/you.h b/include/you.h
index a073e5c57..1f4b9c592 100644
--- a/include/you.h
+++ b/include/you.h
@@ -496,8 +496,9 @@ struct you {
     struct skills weapon_skills[P_NUM_SKILLS];
     boolean twoweap;         /* KMH -- Using two-weapon combat */
     short mcham;             /* vampire mndx if shapeshifted to bat/cloud */
-    short umovement;         /* instead of youmonst.movement */
+    short umovement;         /* instead of u.umonst->movement */
     schar uachieved[N_ACH];  /* list of achievements in the order attained */
+    struct monst *umonst;
 }; /* end of `struct you' */
 
 
diff --git a/include/youprop.h b/include/youprop.h
index f2c166606..98862dead 100644
--- a/include/youprop.h
+++ b/include/youprop.h
@@ -67,7 +67,7 @@
 #define HSick_resistance u.uprops[SICK_RES].intrinsic
 #define ESick_resistance u.uprops[SICK_RES].extrinsic
 #define Sick_resistance (HSick_resistance || ESick_resistance \
-                         || defended(&gy.youmonst, AD_DISE))
+                         || defended(u.umonst, AD_DISE))
 
 /* Intrinsics only */
 #define Invulnerable u.uprops[INVULNERABLE].intrinsic /* [Tom] */
@@ -270,11 +270,11 @@
 #define HMagical_breathing u.uprops[MAGICAL_BREATHING].intrinsic
 #define EMagical_breathing u.uprops[MAGICAL_BREATHING].extrinsic
 #define Amphibious \
-    (HMagical_breathing || EMagical_breathing || amphibious(gy.youmonst.data))
+    (HMagical_breathing || EMagical_breathing || amphibious(u.umonst->data))
 /* Get wet, may go under surface */
 
 #define Breathless \
-    (HMagical_breathing || EMagical_breathing || breathless(gy.youmonst.data))
+    (HMagical_breathing || EMagical_breathing || breathless(u.umonst->data))
 
 #define Underwater (u.uinwater)
 /* Note that Underwater and u.uinwater are both used in code.
@@ -398,7 +398,7 @@
    redundant but allows the function calls to be skipped most of the time */
 #define Unaware (gm.multi < 0 && (unconscious() || is_fainted()))
 
-#define Hate_silver (u.ulycn >= LOW_PM || hates_silver(gy.youmonst.data))
+#define Hate_silver (u.ulycn >= LOW_PM || hates_silver(u.umonst->data))
 
 /* _The_Hitchhikers_Guide_to_the_Galaxy_ on uses for 'towel': "wrap it round
    your head to ward off noxious fumes" [we require it to be damp or wet] */
diff --git a/src/allmain.c b/src/allmain.c
index e9865e73e..4ac564c87 100644
--- a/src/allmain.c
+++ b/src/allmain.c
@@ -120,7 +120,7 @@ u_calc_moveamt(int wtcap)
         /* your speed doesn't augment steed's speed */
         moveamt = mcalcmove(u.usteed, TRUE);
     } else {
-        moveamt = gy.youmonst.data->mmove;
+        moveamt = u.umonst->data->mmove;
 
         if (Very_fast) { /* speed boots, potion, or spell */
             /* gain a free action on 2/3 of turns */
@@ -292,7 +292,7 @@ moveloop_core(void)
                     mvl_wtcap = UNENCUMBERED;
                 } else if (!Upolyd ? (u.uhp < u.uhpmax)
                            : (u.mh < u.mhmax
-                              || gy.youmonst.data->mlet == S_EEL)) {
+                              || u.umonst->data->mlet == S_EEL)) {
                     /* maybe heal */
                     regen_hp(mvl_wtcap);
                 }
@@ -483,7 +483,7 @@ moveloop_core(void)
         curs_on_u();
     }
 
-    m_everyturn_effect(&gy.youmonst);
+    m_everyturn_effect(u.umonst);
 
     svc.context.move = 1;
 
@@ -636,7 +636,7 @@ regen_hp(int wtcap)
     if (Upolyd) {
         if (u.mh < 1) { /* shouldn't happen... */
             rehumanize();
-        } else if (gy.youmonst.data->mlet == S_EEL
+        } else if (u.umonst->data->mlet == S_EEL
                    && !is_pool(u.ux, u.uy) && !Is_waterlevel(&u.uz)
                    && !Breathless) {
             /* eel out of water loses hp, similar to monster eels;
@@ -775,7 +775,7 @@ newgame(void)
     /* make sure welcome messages are given before noticing monsters */
     notice_mon_off();
     disp.botlx = TRUE;
-    svc.context.ident = 2;  /* id 1 is reserved for gy.youmonst */
+    svc.context.ident = 2;  /* id 1 is reserved for u.umonst->m_id */
     svc.context.warnlevel = 1;
     svc.context.next_attrib_check = 600L; /* arbitrary first setting */
     svc.context.tribute.enabled = TRUE;   /* turn on 3.6 tributes    */
diff --git a/src/apply.c b/src/apply.c
index 40aefc3d9..7f0d4320e 100644
--- a/src/apply.c
+++ b/src/apply.c
@@ -324,7 +324,7 @@ use_stethoscope(struct obj *obj)
     boolean interference = (u.uswallow && is_whirly(u.ustuck->data)
                             && !rn2(Role_if(PM_HEALER) ? 10 : 3));
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You("have no hands!"); /* not `body_part(HAND)' */
         return ECMD_OK;
     } else if (Deaf) {
@@ -475,7 +475,7 @@ static const char whistle_str[] = "produce a %s whistling sound.",
 staticfn void
 use_whistle(struct obj *obj)
 {
-    if (!can_blow(&gy.youmonst)) {
+    if (!can_blow(u.umonst)) {
         You("are incapable of using the whistle.");
     } else if (Underwater) {
         You("blow bubbles through %s.", yname(obj));
@@ -494,13 +494,13 @@ use_whistle(struct obj *obj)
 staticfn void
 use_magic_whistle(struct obj *obj)
 {
-    if (!can_blow(&gy.youmonst)) {
+    if (!can_blow(u.umonst)) {
         You("are incapable of using the whistle.");
     } else if (obj->cursed && !rn2(2)) {
         You("produce a %shigh-%s.", Underwater ? "very " : "",
             Deaf ? "frequency vibration" : "pitched humming noise");
         wake_nearby(TRUE);
-        if (!rn2(2) && !noteleport_level(&gy.youmonst))
+        if (!rn2(2) && !noteleport_level(u.umonst))
             tele_to_rnd_pet();
     } else {
         /* it's magic!  it works underwater too (at a higher pitch) */
@@ -1054,8 +1054,8 @@ use_mirror(struct obj *obj)
                     }
                     gn.nomovemsg = 0; /* default, "you can move again" */
                 }
-            } else if (is_vampire(gy.youmonst.data)
-                       || is_vampshifter(&gy.youmonst)) {
+            } else if (is_vampire(u.umonst->data)
+                       || is_vampshifter(u.umonst)) {
                 You("don't have a reflection.");
             } else if (u.umonnum == PM_UMBER_HULK) {
                 pline("Huh?  That doesn't look like you!");
@@ -1786,7 +1786,7 @@ dorub(void)
 {
     struct obj *obj;
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You("aren't able to rub anything without hands.");
         return ECMD_OK;
     }
@@ -1884,7 +1884,7 @@ check_jump(genericptr arg, coordxy x, coordxy y)
     /* let giants jump over boulders (what about Flying?
        and is there really enough head room for giants to jump
        at all, let alone over something tall?) */
-    if (sobj_at(BOULDER, x, y) && !throws_rocks(gy.youmonst.data))
+    if (sobj_at(BOULDER, x, y) && !throws_rocks(u.umonst->data))
         return FALSE;
     return TRUE;
 }
@@ -1993,7 +1993,7 @@ jump(int magic) /* 0=Physical, otherwise skill level */
     if (!magic && !Jumping && known_spell(SPE_JUMPING) >= spe_Fresh)
         return spelleffects(SPE_JUMPING, FALSE, FALSE);
 
-    if (!magic && (nolimbs(gy.youmonst.data) || slithy(gy.youmonst.data))) {
+    if (!magic && (nolimbs(u.umonst->data) || slithy(u.umonst->data))) {
         /* normally (nolimbs || slithy) implies !Jumping,
            but that isn't necessarily the case for knights */
         You_cant("jump; you have no legs!");
@@ -2197,7 +2197,7 @@ use_tinning_kit(struct obj *obj)
         char kbuf[BUFSZ];
         const char *corpse_name = an(cxname(corpse));
 
-        if (poly_when_stoned(gy.youmonst.data)) {
+        if (poly_when_stoned(u.umonst->data)) {
             You("tin %s without wearing gloves.", corpse_name);
             kbuf[0] = '\0';
         } else {
@@ -2634,7 +2634,7 @@ use_grease(struct obj *obj)
         if (otmp != &hands_obj) {
             You("cover %s with a thick layer of grease.", yname(otmp));
             otmp->greased = 1;
-            if (obj->cursed && !nohands(gy.youmonst.data)) {
+            if (obj->cursed && !nohands(u.umonst->data)) {
                 make_glib(oldglib + rn1(6, 10)); /* + 10..15 */
                 pline("Some of the grease gets all over your %s.",
                       fingers_or_gloves(TRUE));
@@ -2826,7 +2826,7 @@ use_trap(struct obj *otmp)
     int levtyp = levl[u.ux][u.uy].typ;
     const char *occutext = "setting the trap";
 
-    if (nohands(gy.youmonst.data))
+    if (nohands(u.umonst->data))
         what = "without hands";
     else if (Stunned)
         what = "while stunned";
@@ -3108,7 +3108,7 @@ use_whip(struct obj *obj)
             cc.y = ry;
             You("wrap your bullwhip around %s.", wrapped_what);
             if (proficient && rn2(proficient + 2)) {
-                if (!mtmp || enexto(&cc, rx, ry, gy.youmonst.data)) {
+                if (!mtmp || enexto(&cc, rx, ry, u.umonst->data)) {
                     You("yank yourself out of the pit!");
                     reset_utrap(TRUE); /* [was after teleds(); do this before
                                         * in case it has no alternative other
@@ -3192,7 +3192,7 @@ use_whip(struct obj *obj)
                            so proficient at catching weapons */
                         int dam, hitvalu, hitu;
 
-                        dam = dmgval(otmp, &gy.youmonst);
+                        dam = dmgval(otmp, u.umonst);
                         hitvalu = 8 + otmp->spe;
                         hitu = thitu(hitvalu, Maybe_Half_Phys(dam),
                                      &otmp, (char *) 0);
@@ -3210,7 +3210,7 @@ use_whip(struct obj *obj)
                     if (otmp->otyp == CORPSE
                         && touch_petrifies(&mons[otmp->corpsenm]) && !uarmg
                         && !Stone_resistance
-                        && !(poly_when_stoned(gy.youmonst.data)
+                        && !(poly_when_stoned(u.umonst->data)
                              && polymon(PM_STONE_GOLEM))) {
                         char kbuf[BUFSZ];
 
@@ -3581,7 +3581,7 @@ use_cream_pie(struct obj *obj)
         You("immerse your %s in %s%s.", body_part(FACE),
               several ? "one of " : "",
               several ? makeplural(the(xname(obj))) : the(xname(obj)));
-    if (can_blnd((struct monst *) 0, &gy.youmonst, AT_WEAP, obj)) {
+    if (can_blnd((struct monst *) 0, u.umonst, AT_WEAP, obj)) {
         int blindinc = rnd(25);
 
         u.ucreamed += blindinc;
@@ -3921,7 +3921,7 @@ do_break_wand(struct obj *obj)
     boolean is_fragile = (objdescr_is(obj, "balsa")
                           || objdescr_is(obj, "glass"));
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You_cant("break %s without hands!", yname(obj));
         return ECMD_OK;
     } else if (!freehand()) {
@@ -4216,7 +4216,7 @@ doapply(void)
     struct obj *obj;
     int res = ECMD_TIME;
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You("aren't able to use or apply tools in your current form.");
         return ECMD_OK;
     }
diff --git a/src/artifact.c b/src/artifact.c
index e0e3df173..17715e10c 100644
--- a/src/artifact.c
+++ b/src/artifact.c
@@ -914,7 +914,7 @@ touch_artifact(struct obj *obj, struct monst *mon)
     if (oart == &artilist[ART_NONARTIFACT])
         return 1;
 
-    yours = (mon == &gy.youmonst);
+    yours = (mon == u.umonst);
     /* all quest artifacts are self-willed; if this ever changes, `badclass'
        will have to be extended to explicitly include quest artifacts */
     self_willed = ((oart->spfx & SPFX_INTEL) != 0);
@@ -1014,7 +1014,7 @@ spec_applies(const struct artifact *weap, struct monst *mtmp)
     if (!(weap->spfx & (SPFX_DBONUS | SPFX_ATTK)))
         return (weap->attk.adtyp == AD_PHYS);
 
-    yours = (mtmp == &gy.youmonst);
+    yours = (mtmp == u.umonst);
     ptr = mtmp->data;
 
     if (weap->spfx & SPFX_DMONS) {
@@ -1256,8 +1256,8 @@ Mb_hit(struct monst *magr, /* attacker */
 {
     struct permonst *old_mdat;
     const char *verb;
-    boolean youattack = (magr == &gy.youmonst),
-            youdefend = (mdef == &gy.youmonst),
+    boolean youattack = (magr == u.umonst),
+            youdefend = (mdef == u.umonst),
             resisted = FALSE, do_stun, do_confuse, result;
     int attack_indx, fakeidx, scare_dieroll = MB_MAX_DIEROLL / 2;
 
@@ -1313,7 +1313,7 @@ Mb_hit(struct monst *magr, /* attacker */
     /* now perform special effects */
     switch (attack_indx) {
     case MB_INDEX_CANCEL:
-        old_mdat = youdefend ? gy.youmonst.data : mdef->data;
+        old_mdat = youdefend ? u.umonst->data : mdef->data;
         /* No mdef->mcan check: even a cancelled monster can be polymorphed
          * into a golem, and the "cancel" effect acts as if some magical
          * energy remains in spellcasting defenders to be absorbed later.
@@ -1323,7 +1323,7 @@ Mb_hit(struct monst *magr, /* attacker */
         } else {
             do_stun = FALSE;
             if (youdefend) {
-                if (gy.youmonst.data != old_mdat)
+                if (u.umonst->data != old_mdat)
                     *dmgptr = 0; /* rehumanized, so no more damage */
                 if (u.uenmax > 0) {
                     u.uenmax--;
@@ -1359,7 +1359,7 @@ Mb_hit(struct monst *magr, /* attacker */
                 nomul(-3);
                 gm.multi_reason = "being scared stiff";
                 gn.nomovemsg = "";
-                if (magr && magr == u.ustuck && sticks(gy.youmonst.data)) {
+                if (magr && magr == u.ustuck && sticks(u.umonst->data)) {
                     set_ustuck((struct monst *) 0);
                     You("release %s!", mon_nam(magr));
                 }
@@ -1445,14 +1445,14 @@ DISABLE_WARNING_FORMAT_NONLITERAL
  */
 boolean
 artifact_hit(
-    struct monst *magr, /* attacker; might be Null if 'mdef' is youmonst */
+    struct monst *magr, /* attacker; might be Null if 'mdef' is u.umonst */
     struct monst *mdef, /* defender */
     struct obj *otmp,   /* artifact weapon */
     int *dmgptr,        /* output */
     int dieroll)        /* needed for Magicbane and vorpal blades */
 {
-    boolean youattack = (magr == &gy.youmonst);
-    boolean youdefend = (mdef == &gy.youmonst);
+    boolean youattack = (magr == u.umonst);
+    boolean youdefend = (mdef == u.umonst);
     boolean vis = (!youattack && magr && cansee(magr->mx, magr->my))
                   || (!youdefend && cansee(mdef->mx, mdef->my))
                   || (youattack && engulfing_u(mdef) && !Blind);
@@ -1575,7 +1575,7 @@ artifact_hit(
                 observe_object(otmp);
                 return TRUE;
             } else {
-                if (bigmonst(gy.youmonst.data)) {
+                if (bigmonst(u.umonst->data)) {
                     pline("%s cuts deeply into you!",
                           magr ? Monnam(magr) : wepdesc);
                     *dmgptr *= 2;
@@ -1622,14 +1622,14 @@ artifact_hit(
                 observe_object(otmp);
                 return TRUE;
             } else {
-                if (!has_head(gy.youmonst.data)) {
+                if (!has_head(u.umonst->data)) {
                     pline("Somehow, %s misses you wildly.",
                           magr ? mon_nam(magr) : wepdesc);
                     *dmgptr = 0;
                     return TRUE;
                 }
-                if (noncorporeal(gy.youmonst.data)
-                    || amorphous(gy.youmonst.data)) {
+                if (noncorporeal(u.umonst->data)
+                    || amorphous(u.umonst->data)) {
                     pline("%s slices through your %s.", wepdesc,
                           body_part(NECK));
                     return TRUE;
@@ -2517,11 +2517,11 @@ retouch_object(
         return 1;
     }
 
-    if (touch_artifact(obj, &gy.youmonst)) {
+    if (touch_artifact(obj, u.umonst)) {
         char buf[BUFSZ];
         int dmg = 0, tmp;
         boolean ag = (objects[obj->otyp].oc_material == SILVER && Hate_silver),
-                bane = bane_applies(get_artifact(obj), &gy.youmonst);
+                bane = bane_applies(get_artifact(obj), u.umonst);
 
         /* nothing else to do if hero can successfully handle this object */
         if (!ag && !bane)
@@ -2776,7 +2776,7 @@ is_magic_key(struct monst *mon, /* if null, non-rogue is assumed */
              struct obj *obj)
 {
     if (is_art(obj, ART_MASTER_KEY_OF_THIEVERY)) {
-        if ((mon == &gy.youmonst) ? Role_if(PM_ROGUE)
+        if ((mon == u.umonst) ? Role_if(PM_ROGUE)
                                  : (mon && mon->data == &mons[PM_ROGUE]))
             return !obj->cursed; /* a rogue; non-cursed suffices for magic */
         /* not a rogue; key must be blessed to behave as a magic one */
@@ -2785,7 +2785,7 @@ is_magic_key(struct monst *mon, /* if null, non-rogue is assumed */
     return FALSE;
 }
 
-/* figure out whether 'mon' (usually youmonst) is carrying the magic key */
+/* figure out whether 'mon' (usually u.umonst) is carrying the magic key */
 struct obj *
 has_magic_key(struct monst *mon) /* if null, hero assumed */
 {
@@ -2793,8 +2793,8 @@ has_magic_key(struct monst *mon) /* if null, hero assumed */
     short key = artilist[ART_MASTER_KEY_OF_THIEVERY].otyp;
 
     if (!mon)
-        mon = &gy.youmonst;
-    for (o = ((mon == &gy.youmonst) ? gi.invent : mon->minvent); o;
+        mon = u.umonst;
+    for (o = ((mon == u.umonst) ? gi.invent : mon->minvent); o;
          o = nxtobj(o, key, FALSE)) {
         if (is_magic_key(mon, o))
             return o;
diff --git a/src/attrib.c b/src/attrib.c
index 27f454fd8..bebb46327 100644
--- a/src/attrib.c
+++ b/src/attrib.c
@@ -893,7 +893,7 @@ is_innate(int propidx)
            ignore innateness if equipment is going to claim responsibility */
         && !u.uprops[propidx].extrinsic)
         return FROM_ROLE;
-    if ((propidx == BLINDED && !haseyes(gy.youmonst.data))
+    if ((propidx == BLINDED && !haseyes(u.umonst->data))
         || (propidx == BLND_RES && (HBlnd_resist & FROMFORM) != 0))
         return FROM_FORM;
     return FROM_NONE;
@@ -1219,7 +1219,7 @@ acurr(int chridx)
                there would limit Str to 18/07 [18 + 7] */
             result = max(tmp, 3);
     } else if (chridx == A_CHA) {
-        if (tmp < 18 && (gy.youmonst.data->mlet == S_NYMPH
+        if (tmp < 18 && (u.umonst->data->mlet == S_NYMPH
                          || u.umonnum == PM_AMOROUS_DEMON))
             result = 18;
     } else if (chridx == A_CON) {
diff --git a/src/botl.c b/src/botl.c
index 66c4b8950..b6e72c896 100644
--- a/src/botl.c
+++ b/src/botl.c
@@ -256,7 +256,7 @@ bot(void)
         return;
     /* dosave() flags completion by setting u.uhp to -1; suppress_map_output()
        covers program_state.restoring and is used for status as well as map */
-    if (u.uhp != -1 && gy.youmonst.data
+    if (u.uhp != -1 && u.umonst->data
         && iflags.status_updates && !suppress_map_output()) {
         if (VIA_WINDOWPORT()) {
             bot_via_windowport();
@@ -487,7 +487,7 @@ weapon_status(char *outbuf)
         /* no weapon; gloves imply hands; humanoid also implies hands;
            otherwise make no assumptions */
         res = uarmg ? "Empty-hnd" /* empty handed means "gloves only" */
-              : humanoid(gy.youmonst.data) ? "Bare-hnds" /* bare hands */
+              : humanoid(u.umonst->data) ? "Bare-hnds" /* bare hands */
                 : "No-weapon";
     } else if (u.twoweap) {
         /* two-weaponing implies hands and a weapon or wep-tool
@@ -1179,7 +1179,7 @@ bot_via_windowport(void)
 #else
             test_if_enabled(bl_held) = TRUE;
 #endif
-        } else if (Upolyd && sticks(gy.youmonst.data)) {
+        } else if (Upolyd && sticks(u.umonst->data)) {
             test_if_enabled(bl_holding) = TRUE;
         } else {
             /* grab == hero is held by sea monster and about to be drowned;
diff --git a/src/cmd.c b/src/cmd.c
index de20c283b..93edbe4b9 100644
--- a/src/cmd.c
+++ b/src/cmd.c
@@ -889,7 +889,7 @@ RESTORE_WARNING_FORMAT_NONLITERAL
 int
 domonability(void)
 {
-    struct permonst *uptr = gy.youmonst.data;
+    struct permonst *uptr = u.umonst->data;
     boolean might_hide = (is_hider(uptr) || hides_under(uptr));
     char c = '\0';
 
@@ -917,12 +917,12 @@ domonability(void)
         return domindblast();
     else if (u.umonnum == PM_GREMLIN) {
         if (IS_FOUNTAIN(levl[u.ux][u.uy].typ)) {
-            if (split_mon(&gy.youmonst, (struct monst *) 0))
+            if (split_mon(u.umonst, (struct monst *) 0))
                 dryup(u.ux, u.uy, TRUE);
         } else if (is_pool(u.ux, u.uy)) {
             /* is_pool: might be wearing water walking boots or amulet of
                magical breathing */
-            (void) split_mon(&gy.youmonst, (struct monst *) 0);
+            (void) split_mon(u.umonst, (struct monst *) 0);
         } else {
             There("is no fountain here.");
         }
@@ -935,7 +935,7 @@ domonability(void)
             pline("Unfortunately sound does not carry well through rock.");
         else
             aggravate();
-    } else if (is_vampire(uptr) || is_vampshifter(&gy.youmonst)) {
+    } else if (is_vampire(uptr) || is_vampshifter(u.umonst)) {
         return dopoly();
     } else if (u.usteed && can_breathe(u.usteed->data)) {
         (void) pet_ranged_attk(u.usteed, TRUE);
diff --git a/src/dbridge.c b/src/dbridge.c
index 72d39be82..6afcac7d5 100644
--- a/src/dbridge.c
+++ b/src/dbridge.c
@@ -320,10 +320,10 @@ m_to_e(struct monst *mtmp, coordxy x, coordxy y, struct entity *etmp)
 staticfn void
 u_to_e(struct entity *etmp)
 {
-    etmp->emon = &gy.youmonst;
+    etmp->emon = u.umonst;
     etmp->ex = u.ux;
     etmp->ey = u.uy;
-    etmp->edata = gy.youmonst.data;
+    etmp->edata = u.umonst->data;
 }
 
 staticfn void
@@ -337,7 +337,7 @@ set_entity(
         m_to_e(m_at(x, y), x, y, etmp);
 }
 
-#define is_u(etmp) (etmp->emon == &gy.youmonst)
+#define is_u(etmp) (etmp->emon == u.umonst)
 #define e_canseemon(etmp) (is_u(etmp) || canseemon(etmp->emon))
 
 /*
diff --git a/src/decl.c b/src/decl.c
index 66f3d060e..14a92abb3 100644
--- a/src/decl.c
+++ b/src/decl.c
@@ -842,7 +842,6 @@ static const struct instance_globals_x g_init_x = {
 static const struct instance_globals_y g_init_y = {
     /* decl.c */
     (ROWNO - 1) & ~1, /* y_maze_max */
-    DUMMY, /* youmonst */
     /* pline.c */
     NULL, /* you_buf */
     0, /* you_buf_siz */
diff --git a/src/detect.c b/src/detect.c
index bf536e127..ea077b91a 100644
--- a/src/detect.c
+++ b/src/detect.c
@@ -386,7 +386,7 @@ gold_detect(struct obj *sobj)
            adjust message if you have gold in your inventory */
         char buf[BUFSZ];
 
-        if (gy.youmonst.data == &mons[PM_GOLD_GOLEM])
+        if (u.umonst->data == &mons[PM_GOLD_GOLEM])
             Sprintf(buf, "You feel like a million %s!", currency(2L));
         else if (money_cnt(gi.invent) || hidden_gold(TRUE))
             Strcpy(buf,
@@ -1227,7 +1227,7 @@ use_crystal_ball(struct obj **optr)
             make_confused((HConfusion & TIMEOUT) + impair, FALSE);
             break;
         case 3:
-            if (!resists_blnd(&gy.youmonst)) {
+            if (!resists_blnd(u.umonst)) {
                 pline("%s your vision!", Tobjnam(obj, "damage"));
                 make_blinded(BlindedTimeout + impair, FALSE);
                 if (!Blind)
@@ -1776,7 +1776,7 @@ openone(coordxy zx, coordxy zy, genericptr_t num)
             newsym(zx, zy);
             (*num_p)++;
         }
-        mon = u_at(zx, zy) ? &gy.youmonst : m_at(zx, zy);
+        mon = u_at(zx, zy) ? u.umonst : m_at(zx, zy);
         if (openholdingtrap(mon, &dummy)
             || openfallingtrap(mon, TRUE, &dummy))
             (*num_p)++;
diff --git a/src/dig.c b/src/dig.c
index 5e5fc1a74..1c0ff6ceb 100644
--- a/src/dig.c
+++ b/src/dig.c
@@ -200,7 +200,7 @@ is_digging(void)
     return FALSE;
 }
 
-#define BY_YOU (&gy.youmonst)
+#define BY_YOU (u.umonst)
 #define BY_OBJECT ((struct monst *) 0)
 
 enum digcheck_result
@@ -392,7 +392,7 @@ dig(void)
         } else if (ttmp && ttmp->ttyp == BEAR_TRAP && u.utrap) {
             if (rnl(7) > (Fumbling ? 1 : 4)) {
                 char kbuf[BUFSZ];
-                int dmg = dmgval(uwep, &gy.youmonst) + dbon();
+                int dmg = dmgval(uwep, u.umonst) + dbon();
 
                 if (dmg < 1)
                     dmg = 1;
@@ -2181,8 +2181,8 @@ rot_corpse(anything *arg, long timeout)
             && hides_under(mtmp->data)) {
             mtmp->mundetected = 0;
         } else if (u_at(x, y)
-                   && u.uundetected && hides_under(gy.youmonst.data))
-            (void) hideunder(&gy.youmonst);
+                   && u.uundetected && hides_under(u.umonst->data))
+            (void) hideunder(u.umonst);
         newsym(x, y);
     } else if (in_invent)
         update_inventory();
@@ -2241,27 +2241,27 @@ void
 escape_tomb(void)
 {
     debugpline0("escape_tomb");
-    if ((Teleportation || can_teleport(gy.youmonst.data))
+    if ((Teleportation || can_teleport(u.umonst->data))
         && (Teleport_control || rn2(3) < Luck+2)) {
         You("attempt a teleport spell.");
         (void) dotele(FALSE);        /* calls unearth_you() */
     } else if (u.uburied) { /* still buried after 'port attempt */
         boolean good;
 
-        if (amorphous(gy.youmonst.data) || Passes_walls
-            || noncorporeal(gy.youmonst.data)
-            || (unsolid(gy.youmonst.data)
-                && gy.youmonst.data != &mons[PM_WATER_ELEMENTAL])
-            || (tunnels(gy.youmonst.data) && !needspick(gy.youmonst.data))) {
+        if (amorphous(u.umonst->data) || Passes_walls
+            || noncorporeal(u.umonst->data)
+            || (unsolid(u.umonst->data)
+                && u.umonst->data != &mons[PM_WATER_ELEMENTAL])
+            || (tunnels(u.umonst->data) && !needspick(u.umonst->data))) {
             You("%s up through the %s.",
-                (tunnels(gy.youmonst.data) && !needspick(gy.youmonst.data))
+                (tunnels(u.umonst->data) && !needspick(u.umonst->data))
                    ? "try to tunnel"
-                   : (amorphous(gy.youmonst.data))
+                   : (amorphous(u.umonst->data))
                       ? "ooze"
                       : "phase",
                 surface(u.ux, u.uy));
 
-            good = (tunnels(gy.youmonst.data) && !needspick(gy.youmonst.data))
+            good = (tunnels(u.umonst->data) && !needspick(u.umonst->data))
                       ? dighole(TRUE, FALSE, (coord *) 0) : TRUE;
             if (good)
                 unearth_you();
diff --git a/src/do.c b/src/do.c
index cacab11c7..b5aac1445 100644
--- a/src/do.c
+++ b/src/do.c
@@ -228,7 +228,7 @@ flooreffects(
                 }
                 mtmp->mtrapped = 0;
             } else {
-                if (!Passes_walls && !throws_rocks(gy.youmonst.data)) {
+                if (!Passes_walls && !throws_rocks(u.umonst->data)) {
                     losehp(Maybe_Half_Phys(rnd(15)),
                            "squished under a boulder", NO_KILLER_PREFIX);
                     goto deletedwithboulder;
@@ -1110,7 +1110,7 @@ staticfn boolean
 u_stuck_cannot_go(const char *updn)
 {
     if (u.ustuck) {
-        if (u.uswallow || !sticks(gy.youmonst.data)) {
+        if (u.uswallow || !sticks(u.umonst->data)) {
             You("are %s, and cannot go %s.",
                 !u.uswallow ? "being held"
                 : digests(u.ustuck->data) ? "swallowed"
@@ -1257,7 +1257,7 @@ dodown(void)
         const char *down_or_thru = trap->ttyp == HOLE ? "down" : "through";
         const char *actn = u_locomotion("jump");
 
-        if (gy.youmonst.data->msize >= MZ_HUGE) {
+        if (u.umonst->data->msize >= MZ_HUGE) {
             char qbuf[QBUFSZ];
 
             You("don't fit %s easily.", down_or_thru);
@@ -1426,7 +1426,7 @@ u_collide_m(struct monst *mtmp)
        it was already here.  Randomly move you to an adjacent spot
        or else the monster to any nearby location.  Prior to 3.3.0
        the latter was done unconditionally. */
-    if (!rn2(2) && enexto(&cc, u.ux, u.uy, gy.youmonst.data)
+    if (!rn2(2) && enexto(&cc, u.ux, u.uy, u.umonst->data)
         && next2u(cc.x, cc.y))
         u_on_newpos(cc.x, cc.y); /*[maybe give message here?]*/
     else
@@ -2008,7 +2008,7 @@ hellish_smoke_mesg(void)
 
     if (In_hell(&u.uz) && svl.level.flags.temperature > 0)
         You("%s smoke...",
-              olfaction(gy.youmonst.data) ? "smell" : "sense");
+              olfaction(u.umonst->data) ? "smell" : "sense");
 }
 
 /* give a message when the level temperature is different from previous */
diff --git a/src/do_name.c b/src/do_name.c
index c27396343..b69b56e4d 100644
--- a/src/do_name.c
+++ b/src/do_name.c
@@ -689,7 +689,7 @@ namefloorobj(void)
        been moved off the hero's '@' yet, but there's no way to adjust
        the help text once getpos() has started */
     Sprintf(buf, "object on map (or '.' for one %s you)",
-            (u.uundetected && hides_under(gy.youmonst.data))
+            (u.uundetected && hides_under(u.umonst->data))
               ? "over" : "under");
     if (getpos(&cc, FALSE, buf) < 0 || cc.x <= 0)
         return;
@@ -840,7 +840,7 @@ x_monnam(
             mappear_as_mon = (M_AP_TYPE(mtmp) == M_AP_MONSTER);
     char *bp, buf2[BUFSZ];
 
-    if (mtmp == &gy.youmonst)
+    if (mtmp == u.umonst)
         return strcpy(buf, "you"); /* ignore article, "invisible", &c */
 
     if (program_state.gameover)
@@ -1290,7 +1290,7 @@ Mgender(struct monst *mtmp)
 {
     int mgender = MALE;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         if (Upolyd ? u.mfemale : flags.female)
             mgender = FEMALE;
     } else if (mtmp->female) {
diff --git a/src/do_wear.c b/src/do_wear.c
index 382b17741..59e62927d 100644
--- a/src/do_wear.c
+++ b/src/do_wear.c
@@ -281,7 +281,7 @@ Boots_off(void)
         /* check for lava since fireproofed boots make it viable */
         if ((is_pool(u.ux, u.uy) || is_lava(u.ux, u.uy))
             && !Levitation && !Flying
-            && !(is_clinger(gy.youmonst.data) && has_ceiling(&u.uz))
+            && !(is_clinger(u.umonst->data) && has_ceiling(&u.uz))
             && !svc.context.takeoff.cancelled_don
             /* avoid recursive call to lava_effects() */
             && !iflags.in_lava_effects) {
@@ -1035,7 +1035,7 @@ Amulet_on(struct obj *amul)
     }
     case AMULET_OF_STRANGULATION:
         /* note: might already be Strangled (via #wizintrinsic) */
-        if (can_be_strangled(&gy.youmonst) && !Strangled) {
+        if (can_be_strangled(u.umonst) && !Strangled) {
             makeknown(AMULET_OF_STRANGULATION);
             Strangled = 6L;
             disp.botl = TRUE;
@@ -1118,7 +1118,7 @@ Amulet_off(void)
         early_off_msg = TRUE;
 
         if (Underwater) {
-            if (!cant_drown(gy.youmonst.data) && !Swimming) {
+            if (!cant_drown(u.umonst->data) && !Swimming) {
                 You("suddenly inhale an unhealthy amount of %s!",
                     hliquid("water"));
                 mkn = TRUE; /* in case of life-saving */
@@ -2034,7 +2034,7 @@ canwearobj(struct obj *otmp, long *mask, boolean noisy)
 
     /* this is the same check as for 'W' (dowear), but different message,
        in case we get here via 'P' (doputon) */
-    if (verysmall(gy.youmonst.data) || nohands(gy.youmonst.data)) {
+    if (verysmall(u.umonst->data) || nohands(u.umonst->data)) {
         if (noisy)
             You("can't wear any armor in your current form.");
         return 0;
@@ -2044,13 +2044,13 @@ canwearobj(struct obj *otmp, long *mask, boolean noisy)
             : is_shirt(otmp) ? c_shirt
               : is_suit(otmp) ? c_suit
                 : 0;
-    if (which && cantweararm(gy.youmonst.data)
+    if (which && cantweararm(u.umonst->data)
         /* same exception for cloaks as used in m_dowear() */
         && (which != c_cloak
             || ((otmp->otyp != MUMMY_WRAPPING)
-                ? gy.youmonst.data->msize != MZ_SMALL
-                : !WrappingAllowed(gy.youmonst.data)))
-        && (racial_exception(&gy.youmonst, otmp) < 1)) {
+                ? u.umonst->data->msize != MZ_SMALL
+                : !WrappingAllowed(u.umonst->data)))
+        && (racial_exception(u.umonst, otmp) < 1)) {
         if (noisy)
             pline_The("%s will not fit on your body.", which);
         return 0;
@@ -2072,12 +2072,12 @@ canwearobj(struct obj *otmp, long *mask, boolean noisy)
             if (noisy)
                 already_wearing(an(helm_simple_name(uarmh)));
             err++;
-        } else if (Upolyd && has_horns(gy.youmonst.data) && !is_flimsy(otmp)) {
+        } else if (Upolyd && has_horns(u.umonst->data) && !is_flimsy(otmp)) {
             /* (flimsy exception matches polyself handling) */
             if (noisy)
                 pline_The("%s won't fit over your horn%s.",
                           helm_simple_name(otmp),
-                          plur(num_horns(gy.youmonst.data)));
+                          plur(num_horns(u.umonst->data)));
             err++;
         } else
             *mask = W_ARMH;
@@ -2104,11 +2104,11 @@ canwearobj(struct obj *otmp, long *mask, boolean noisy)
             if (noisy)
                 already_wearing(c_boots);
             err++;
-        } else if (Upolyd && slithy(gy.youmonst.data)) {
+        } else if (Upolyd && slithy(u.umonst->data)) {
             if (noisy)
                 You("have no feet..."); /* not body_part(FOOT) */
             err++;
-        } else if (Upolyd && gy.youmonst.data->mlet == S_CENTAUR) {
+        } else if (Upolyd && u.umonst->data->mlet == S_CENTAUR) {
             /* break_armor() pushes boots off for centaurs, so don't let
                dowear() put them back on;
                makeplural(body_part(FOOT)) would yield "rear hooves" here,
@@ -2251,13 +2251,13 @@ accessory_or_armor_on(struct obj *obj)
             char answer, qbuf[QBUFSZ];
             int res = 0;
 
-            if (nolimbs(gy.youmonst.data)) {
+            if (nolimbs(u.umonst->data)) {
                 You("cannot make the ring stick to your body.");
                 return ECMD_OK;
             }
             if (uleft && uright) {
                 There("are no more %s%s to fill.",
-                      humanoid(gy.youmonst.data) ? "ring-" : "",
+                      humanoid(u.umonst->data) ? "ring-" : "",
                       fingers_or_gloves(FALSE));
                 return ECMD_OK;
             }
@@ -2268,7 +2268,7 @@ accessory_or_armor_on(struct obj *obj)
             } else {
                 do {
                     Sprintf(qbuf, "Which %s%s, Right or Left?",
-                            humanoid(gy.youmonst.data) ? "ring-" : "",
+                            humanoid(u.umonst->data) ? "ring-" : "",
                             body_part(FINGER));
                     answer = yn_function(qbuf, rightleftchars, '\0', TRUE);
                     switch (answer) {
@@ -2321,7 +2321,7 @@ accessory_or_armor_on(struct obj *obj)
                 return ECMD_OK;
             }
         } else if (eyewear) {
-            if (!has_head(gy.youmonst.data)) {
+            if (!has_head(u.umonst->data)) {
                 You("have no head to wear %s on.", ansimpleoname(obj));
                 return ECMD_OK;
             }
@@ -2435,7 +2435,7 @@ dowear(void)
 
     /* cantweararm() checks for suits of armor, not what we want here;
        verysmall() or nohands() checks for shields, gloves, etc... */
-    if (verysmall(gy.youmonst.data) || nohands(gy.youmonst.data)) {
+    if (verysmall(u.umonst->data) || nohands(u.umonst->data)) {
         pline("Don't even bother.");
         return ECMD_OK;
     }
@@ -2459,7 +2459,7 @@ doputon(void)
         && uarm && uarmu && uarmc && uarmh && uarms && uarmg && uarmf) {
         /* 'P' message doesn't mention armor */
         Your("%s%s are full, and you're already wearing an amulet and %s.",
-             humanoid(gy.youmonst.data) ? "ring-" : "",
+             humanoid(u.umonst->data) ? "ring-" : "",
              fingers_or_gloves(FALSE),
              (ublindf->otyp == LENSES) ? "some lenses" : "a blindfold");
         return ECMD_OK;
@@ -2544,7 +2544,7 @@ glibr(void)
     rightfall = (uright && !uright->cursed && (!welded(uwep)));
 */
 
-    if (!uarmg && (leftfall || rightfall) && !nolimbs(gy.youmonst.data)) {
+    if (!uarmg && (leftfall || rightfall) && !nolimbs(u.umonst->data)) {
         /* changed so cursed rings don't fall off, GAN 10/30/86 */
         Your("%s off your %s.",
              (leftfall && rightfall) ? "rings slip" : "ring slips",
@@ -2631,22 +2631,22 @@ some_armor(struct monst *victim)
 {
     struct obj *otmph, *otmp;
 
-    otmph = (victim == &gy.youmonst) ? uarmc : which_armor(victim, W_ARMC);
+    otmph = (victim == u.umonst) ? uarmc : which_armor(victim, W_ARMC);
     if (!otmph)
-        otmph = (victim == &gy.youmonst) ? uarm : which_armor(victim, W_ARM);
+        otmph = (victim == u.umonst) ? uarm : which_armor(victim, W_ARM);
     if (!otmph)
-        otmph = (victim == &gy.youmonst) ? uarmu : which_armor(victim, W_ARMU);
+        otmph = (victim == u.umonst) ? uarmu : which_armor(victim, W_ARMU);
 
-    otmp = (victim == &gy.youmonst) ? uarmh : which_armor(victim, W_ARMH);
+    otmp = (victim == u.umonst) ? uarmh : which_armor(victim, W_ARMH);
     if (otmp && (!otmph || !rn2(4)))
         otmph = otmp;
-    otmp = (victim == &gy.youmonst) ? uarmg : which_armor(victim, W_ARMG);
+    otmp = (victim == u.umonst) ? uarmg : which_armor(victim, W_ARMG);
     if (otmp && (!otmph || !rn2(4)))
         otmph = otmp;
-    otmp = (victim == &gy.youmonst) ? uarmf : which_armor(victim, W_ARMF);
+    otmp = (victim == u.umonst) ? uarmf : which_armor(victim, W_ARMF);
     if (otmp && (!otmph || !rn2(4)))
         otmph = otmp;
-    otmp = (victim == &gy.youmonst) ? uarms : which_armor(victim, W_ARMS);
+    otmp = (victim == u.umonst) ? uarms : which_armor(victim, W_ARMS);
     if (otmp && (!otmph || !rn2(4)))
         otmph = otmp;
     return otmph;
@@ -2664,7 +2664,7 @@ stuck_ring(struct obj *ring, int otyp)
     if (ring && ring->otyp == otyp) {
         /* reasons ring can't be removed match those checked by select_off();
            limbless case has extra checks because ordinarily it's temporary */
-        if (nolimbs(gy.youmonst.data) && uamul
+        if (nolimbs(u.umonst->data) && uamul
             && uamul->otyp == AMULET_OF_UNCHANGING && uamul->cursed)
             return uamul;
         if (welded(uwep) && ((ring == RING_ON_PRIMARY) || bimanual(uwep)))
@@ -2706,7 +2706,7 @@ select_off(struct obj *otmp)
     if (otmp == uright || otmp == uleft) {
         struct obj glibdummy;
 
-        if (nolimbs(gy.youmonst.data)) {
+        if (nolimbs(u.umonst->data)) {
             pline_The("ring is stuck.");
             return 0;
         }
diff --git a/src/dog.c b/src/dog.c
index a583de705..f9676050c 100644
--- a/src/dog.c
+++ b/src/dog.c
@@ -1181,7 +1181,7 @@ tamedog(
     if (mtmp == u.ustuck) {
         if (u.uswallow)
             expels(mtmp, mtmp->data, TRUE);
-        else if (!(Upolyd && sticks(gy.youmonst.data)))
+        else if (!(Upolyd && sticks(u.umonst->data)))
             unstuck(mtmp);
     }
 
@@ -1239,7 +1239,7 @@ tamedog(
            with each other anymore] */
         || mtmp->isshk || mtmp->isgd || mtmp->ispriest || mtmp->isminion
         || is_covetous(mtmp->data) || is_human(mtmp->data)
-        || (is_demon(mtmp->data) && !is_demon(gy.youmonst.data))
+        || (is_demon(mtmp->data) && !is_demon(u.umonst->data))
         || (obj && dogfood(mtmp, obj) >= MANFOOD))
         return FALSE;
 
@@ -1309,7 +1309,7 @@ wary_dog(struct monst *mtmp, boolean was_dead)
             if (!rn2(edog->abuse + 1))
                 mtmp->mpeaceful = 1;
         if (!quietly && cansee(mtmp->mx, mtmp->my)) {
-            if (haseyes(gy.youmonst.data)) {
+            if (haseyes(u.umonst->data)) {
                 if (haseyes(mtmp->data))
                     pline_mon(mtmp,
                              "%s %s to look you in the %s.", Monnam(mtmp),
diff --git a/src/dogmove.c b/src/dogmove.c
index 1218c305e..fa209f1d3 100644
--- a/src/dogmove.c
+++ b/src/dogmove.c
@@ -675,7 +675,7 @@ find_targ(
             break;
 
         if (curx == mtmp->mux && cury == mtmp->muy)
-            return &gy.youmonst;
+            return u.umonst;
 
         if ((targ = m_at(curx, cury)) != 0) {
             /* Is the monster visible to the pet? */
@@ -778,7 +778,7 @@ score_targ(struct monst *mtmp, struct monst *mtarg)
             return score;
         }
         /* Is the monster peaceful or tame? */
-        if (/*mtarg->mpeaceful ||*/ mtarg->mtame || mtarg == &gy.youmonst) {
+        if (/*mtarg->mpeaceful ||*/ mtarg->mtame || mtarg == u.umonst) {
             /* Pets will never be targeted */
             score -= 3000L;
             return score;
@@ -907,7 +907,7 @@ pet_ranged_attk(struct monst *mtmp, boolean forced)
     if (mtarg && (!hungry || !rn2(5))) {
         int mstatus = M_ATTK_MISS;
 
-        if (mtarg == &gy.youmonst) {
+        if (mtarg == u.umonst) {
             if (mattacku(mtmp))
                 return MMOVE_DIED;
             /* Treat this as the pet having initiated an attack even if it
@@ -931,7 +931,7 @@ pet_ranged_attk(struct monst *mtmp, boolean forced)
              * nothing will happen.
              */
             if ((mstatus & M_ATTK_HIT) && !(mstatus & M_ATTK_DEF_DIED)
-                && rn2(4) && mtarg != &gy.youmonst) {
+                && rn2(4) && mtarg != u.umonst) {
 
                 /* Can monster see?  If it can, it can retaliate
                  * even if the pet is invisible, since it'll see
@@ -1054,7 +1054,7 @@ dog_move(
     }
 #if 0 /* [this is now handled in dochug()] */
     if (!Conflict && !mtmp->mconf
-        && mtmp == u.ustuck && !sticks(gy.youmonst.data)) {
+        && mtmp == u.ustuck && !sticks(u.umonst->data)) {
         unstuck(mtmp); /* swallowed case handled above */
         You("get released!");
     }
diff --git a/src/dokick.c b/src/dokick.c
index 45d0b097c..e20f83100 100644
--- a/src/dokick.c
+++ b/src/dokick.c
@@ -6,7 +6,7 @@
 
 #define is_bigfoot(x) ((x) == &mons[PM_SASQUATCH])
 #define martial()                                 \
-    (martial_bonus() || is_bigfoot(gy.youmonst.data) \
+    (martial_bonus() || is_bigfoot(u.umonst->data) \
      || (uarmf && uarmf->otyp == KICKING_BOOTS))
 
 /* gk.kickedobj (decl.c) tracks a kicked object until placed or destroyed */
@@ -53,7 +53,7 @@ kickdmg(struct monst *mon, boolean clumsy)
     if (mon->data == &mons[PM_SHADE])
         dmg = 0;
 
-    specialdmg = special_dmgval(&gy.youmonst, mon, W_ARMF, (long *) 0);
+    specialdmg = special_dmgval(u.umonst, mon, W_ARMF, (long *) 0);
 
     if (mon->data == &mons[PM_SHADE] && !specialdmg) {
         pline_The("%s.", kick_passes_thru);
@@ -180,7 +180,7 @@ kick_monster(struct monst *mon, coordxy x, coordxy y)
      * normally, getting all your attacks _including_ all your kicks.
      * If you have >1 kick attack, you get all of them.
      */
-    if (Upolyd && attacktype(gy.youmonst.data, AT_KICK)) {
+    if (Upolyd && attacktype(u.umonst->data, AT_KICK)) {
         struct attack *uattk;
         int sum, kickdieroll, armorpenalty, specialdmg,
             attknum = 0,
@@ -194,13 +194,13 @@ kick_monster(struct monst *mon, coordxy x, coordxy y)
             if (gm.multi < 0)
                 break;
 
-            uattk = &gy.youmonst.data->mattk[i];
+            uattk = &u.umonst->data->mattk[i];
             /* we only care about kicking attacks here */
             if (uattk->aatyp != AT_KICK)
                 continue;
 
             kickdieroll = rnd(20);
-            specialdmg = special_dmgval(&gy.youmonst, mon, W_ARMF,
+            specialdmg = special_dmgval(u.umonst, mon, W_ARMF,
                                         (long *) 0);
             if (mon->data == &mons[PM_SHADE] && !specialdmg) {
                 /* doesn't matter whether it would have hit or missed,
@@ -545,7 +545,7 @@ really_kick_object(coordxy x, coordxy y)
         You("kick %s with your bare %s.",
             corpse_xname(gk.kickedobj, (const char *) 0, CXN_PFX_THE),
             makeplural(body_part(FOOT)));
-        if (poly_when_stoned(gy.youmonst.data) && polymon(PM_STONE_GOLEM)) {
+        if (poly_when_stoned(u.umonst->data) && polymon(PM_STONE_GOLEM)) {
             ; /* hero has been transformed but kick continues */
         } else {
             /* normalize body shape here; foot, not body_part(FOOT) */
@@ -924,7 +924,7 @@ kick_door(coordxy x, coordxy y, int avrg_attrib)
     }
 
     exercise(A_DEX, TRUE);
-    doorbuster = Upolyd && is_giant(gy.youmonst.data);
+    doorbuster = Upolyd && is_giant(u.umonst->data);
     /* door is known to be CLOSED or LOCKED */
     if (doorbuster
         || (rnl(35) < avrg_attrib + (!martial() ? 0 : ACURR(A_DEX)))) {
@@ -1262,10 +1262,10 @@ dokick(void)
     struct monst *mtmp;
     boolean no_kick = FALSE;
 
-    if (nolimbs(gy.youmonst.data) || slithy(gy.youmonst.data)) {
+    if (nolimbs(u.umonst->data) || slithy(u.umonst->data)) {
         You("have no legs to kick with.");
         no_kick = TRUE;
-    } else if (verysmall(gy.youmonst.data)) {
+    } else if (verysmall(u.umonst->data)) {
         You("are too small to do any kicking.");
         no_kick = TRUE;
     } else if (u.usteed) {
@@ -1282,7 +1282,7 @@ dokick(void)
     } else if (near_capacity() > SLT_ENCUMBER) {
         Your("load is too heavy to balance yourself for a kick.");
         no_kick = TRUE;
-    } else if (gy.youmonst.data->mlet == S_LIZARD) {
+    } else if (u.umonst->data->mlet == S_LIZARD) {
         Your("legs cannot kick effectively.");
         no_kick = TRUE;
     } else if (u.uinwater && !rn2(2)) {
@@ -1429,7 +1429,7 @@ dokick(void)
             int range;
 
             range =
-                ((int) gy.youmonst.data->cwt + (weight_cap() + inv_weight()));
+                ((int) u.umonst->data->cwt + (weight_cap() + inv_weight()));
             if (range < 1)
                 range = 1; /* divide by zero avoidance */
             range = (3 * (int) mdat->cwt) / range;
diff --git a/src/dothrow.c b/src/dothrow.c
index 952913a43..e3ff3457c 100644
--- a/src/dothrow.c
+++ b/src/dothrow.c
@@ -125,7 +125,7 @@ throw_obj(struct obj *obj, int shotlimit)
         goto unsplit_stack;
     }
     if ((is_art(obj, ART_MJOLLNIR) && ACURR(A_STR) < STR19(25))
-        || (obj->otyp == BOULDER && !throws_rocks(gy.youmonst.data))) {
+        || (obj->otyp == BOULDER && !throws_rocks(u.umonst->data))) {
         pline("It's too heavy.");
         res = ECMD_TIME;
         goto unsplit_stack;
@@ -299,10 +299,10 @@ ok_to_throw(int *shotlimit_p) /* (see dothrow()) */
     *shotlimit_p = LIMIT_TO_RANGE_INT(0, LARGEST_INT, gc.command_count);
     gm.multi = 0; /* reset; it's been used up */
 
-    if (notake(gy.youmonst.data)) {
+    if (notake(u.umonst->data)) {
         You("are physically incapable of throwing or shooting anything.");
         return FALSE;
-    } else if (nohands(gy.youmonst.data)) {
+    } else if (nohands(u.umonst->data)) {
         You_cant("throw or shoot without hands."); /* not body_part(HAND) */
         return FALSE;
         /*[what about !freehand(), aside from cursed missile launcher?]*/
@@ -341,7 +341,7 @@ throw_ok(struct obj *obj)
     if (uslinging() && obj->oclass == GEM_CLASS)
         return GETOBJ_SUGGEST;
 
-    if (throws_rocks(gy.youmonst.data) && obj->otyp == BOULDER)
+    if (throws_rocks(u.umonst->data) && obj->otyp == BOULDER)
         return GETOBJ_SUGGEST;
 
     return GETOBJ_DOWNPLAY;
@@ -820,12 +820,12 @@ hurtle_step(genericptr_t arg, coordxy x, coordxy y)
             why = "touching the edge of the universe";
             You("smack into something!");
         } else if (diagonal
-                   && bad_rock(gy.youmonst.data, u.ux, y)
-                   && bad_rock(gy.youmonst.data, x, u.uy)) {
+                   && bad_rock(u.umonst->data, u.ux, y)
+                   && bad_rock(u.umonst->data, x, u.uy)) {
             boolean too_much = (gi.invent
                        && (inv_weight() + weight_cap() > WT_TOOMUCH_DIAGONAL));
 
-            if (bigmonst(gy.youmonst.data) || too_much) {
+            if (bigmonst(u.umonst->data) || too_much) {
                 why = "wedging into a narrow crevice";
                 You("%sget forcefully wedged into a crevice.",
                     too_much ? "and all your belongings " : "");
@@ -874,7 +874,7 @@ hurtle_step(genericptr_t arg, coordxy x, coordxy y)
                     an(pmname(mon->data, NEUTRAL)));
             instapetrify(svk.killer.name);
         }
-        if (touch_petrifies(gy.youmonst.data)
+        if (touch_petrifies(u.umonst->data)
             && !which_armor(mon, W_ARMU | W_ARM | W_ARMC)) {
             minstapetrify(mon, TRUE);
         }
@@ -883,8 +883,8 @@ hurtle_step(genericptr_t arg, coordxy x, coordxy y)
     }
 
     if ((u.ux - x) && (u.uy - y)
-        && bad_rock(gy.youmonst.data, u.ux, y)
-        && bad_rock(gy.youmonst.data, x, u.uy)) {
+        && bad_rock(u.umonst->data, u.ux, y)
+        && bad_rock(u.umonst->data, x, u.uy)) {
         /* Move at a diagonal. */
         if (Sokoban) {
             You("come to an abrupt halt!");
@@ -1045,7 +1045,7 @@ mhurtle_step(genericptr_t arg, coordxy x, coordxy y)
         pline("%s bumps into you.", Some_Monnam(mon));
         stop_occupation();
         /* check whether 'mon' is turned to stone by touching poly'd hero */
-        if (Upolyd && touch_petrifies(gy.youmonst.data)
+        if (Upolyd && touch_petrifies(u.umonst->data)
             && !which_armor(mon, W_ARMU | W_ARM | W_ARMC)) {
             /* give poly'd hero credit/blame despite a monster causing it */
             minstapetrify(mon, TRUE);
@@ -1287,14 +1287,14 @@ toss_up(struct obj *obj, boolean hitsroof)
     /* object now hits you */
 
     if (obj->oclass == POTION_CLASS) {
-        potionhit(&gy.youmonst, obj, POTHIT_HERO_THROW);
+        potionhit(u.umonst, obj, POTHIT_HERO_THROW);
     } else if (breaktest(obj)) {
         int blindinc;
 
         /* need to check for blindness result prior to destroying obj */
         blindinc = ((otyp == CREAM_PIE || otyp == BLINDING_VENOM)
                     /* AT_WEAP is ok here even if attack type was AT_SPIT */
-                    && can_blnd(&gy.youmonst, &gy.youmonst, AT_WEAP, obj))
+                    && can_blnd(u.umonst, u.umonst, AT_WEAP, obj))
                        ? rnd(25)
                        : 0;
         breakmsg(obj, !Blind);
@@ -1304,7 +1304,7 @@ toss_up(struct obj *obj, boolean hitsroof)
         switch (otyp) {
         case EGG:
             if (petrifier && !Stone_resistance
-                && !(poly_when_stoned(gy.youmonst.data)
+                && !(poly_when_stoned(u.umonst->data)
                      && polymon(PM_STONE_GOLEM))) {
                 /* egg ends up "all over your face"; perhaps
                    visored helmet should still save you here */
@@ -1344,13 +1344,13 @@ toss_up(struct obj *obj, boolean hitsroof)
                 less_damage = (hard_helmet(uarmh)
                                && (!is_silver || !Hate_silver)),
                 harmless = (stone_missile(obj)
-                            && passes_rocks(gy.youmonst.data)),
+                            && passes_rocks(u.umonst->data)),
                 artimsg = FALSE;
-        int dmg = dmgval(obj, &gy.youmonst);
+        int dmg = dmgval(obj, u.umonst);
 
         if (obj->oartifact && !harmless)
             /* need a fake die roll here; rn1(18,2) avoids 1 and 20 */
-            artimsg = artifact_hit((struct monst *) 0, &gy.youmonst, obj,
+            artimsg = artifact_hit((struct monst *) 0, u.umonst, obj,
                                    &dmg, rn1(18, 2));
 
         if (!dmg) { /* probably wasn't a weapon; base damage on weight */
@@ -1364,9 +1364,9 @@ toss_up(struct obj *obj, boolean hitsroof)
                dmgval()'s artifact light against gremlin or axe against
                woody creature since both involve weapons; hero-as-shade is
                hypothetical because hero can't polymorph into that form */
-            if (gy.youmonst.data == &mons[PM_SHADE] && !is_silver)
+            if (u.umonst->data == &mons[PM_SHADE] && !is_silver)
                 dmg = 0;
-            if (obj->blessed && mon_hates_blessings(&gy.youmonst))
+            if (obj->blessed && mon_hates_blessings(u.umonst))
                 dmg += rnd(4);
             if (is_silver && Hate_silver)
                 dmg += rnd(20);
@@ -1399,7 +1399,7 @@ toss_up(struct obj *obj, boolean hitsroof)
                harmless, but hitting a worn helmet negates that */
             harmless = FALSE;
         } else if (petrifier && !Stone_resistance
-                   && !(poly_when_stoned(gy.youmonst.data)
+                   && !(poly_when_stoned(u.umonst->data)
                         && polymon(PM_STONE_GOLEM))) {
  petrify:
             svk.killer.format = KILLED_BY;
@@ -1415,7 +1415,7 @@ toss_up(struct obj *obj, boolean hitsroof)
         if (is_silver && Hate_silver)
             pline_The("silver sears you!");
         if (harmless)
-            hit(thesimpleoname(obj), &gy.youmonst, " but doesn't hurt.");
+            hit(thesimpleoname(obj), u.umonst, " but doesn't hurt.");
 
         hitfloor(obj, TRUE);
         gt.thrownobj = 0;
@@ -1603,7 +1603,7 @@ throwit(
             hurtle(-u.dx, -u.dy, 1, TRUE);
         mon = boomhit(obj, u.dx, u.dy);
         iflags.returning_missile = 0; /* has returned or isn't going to */
-        if (mon == &gy.youmonst) { /* the thing was caught */
+        if (mon == u.umonst) { /* the thing was caught */
             exercise(A_DEX, TRUE);
             obj = return_throw_to_inv(obj, wep_mask, twoweap, oldslot);
             throwit_return(TRUE);
@@ -1743,7 +1743,7 @@ throwit(
                               body_part(ARM));
                         if (obj->oartifact)
                             (void) artifact_hit((struct monst *) 0,
-                                                &gy.youmonst, obj, &dmg, 0);
+                                                u.umonst, obj, &dmg, 0);
                         losehp(Maybe_Half_Phys(dmg), killer_xname(obj),
                                KILLED_BY);
                     }
@@ -2034,7 +2034,7 @@ thitmonst(
      * Distance and monster size affect chance to hit.
      */
     tmp = -1 + Luck + find_mac(mon) + u.uhitinc
-          + maybe_polyd(gy.youmonst.data->mlevel, u.ulevel);
+          + maybe_polyd(u.umonst->data->mlevel, u.ulevel);
     if (ACURR(A_DEX) < 4)
         tmp -= 3;
     else if (ACURR(A_DEX) < 6)
@@ -2073,7 +2073,7 @@ thitmonst(
 
     tmp += omon_adj(mon, obj, TRUE);
     if (is_orc(mon->data)
-        && maybe_polyd(is_elf(gy.youmonst.data), Race_if(PM_ELF)))
+        && maybe_polyd(is_elf(u.umonst->data), Race_if(PM_ELF)))
         tmp++;
     if (guaranteed_hit) {
         tmp += 1000; /* Guaranteed hit */
@@ -2170,7 +2170,7 @@ thitmonst(
                  * Polymorphing won't make you a bow expert.
                  */
                 if ((Race_if(PM_ELF) || Role_if(PM_SAMURAI))
-                    && (!Upolyd || your_race(gy.youmonst.data))
+                    && (!Upolyd || your_race(u.umonst->data))
                     && objects[uwep->otyp].oc_skill == P_BOW) {
                     ++tmp;
                     if ((Race_if(PM_ELF) && uwep->otyp == ELVEN_BOW)
@@ -2500,16 +2500,16 @@ breakobj(
         if (obj->otyp == POT_OIL && obj->lamplit) {
             explode_oil(obj, x, y);
         } else if (next2u(x, y)) {
-            if (!breathless(gy.youmonst.data) || haseyes(gy.youmonst.data)) {
+            if (!breathless(u.umonst->data) || haseyes(u.umonst->data)) {
                 /* wet towel protects both eyes and breathing */
                 if (obj->otyp != POT_WATER && !Half_gas_damage) {
-                    if (!breathless(gy.youmonst.data)) {
+                    if (!breathless(u.umonst->data)) {
                         /* [what about "familiar odor" when known?] */
                         You("smell a peculiar odor...");
                     } else {
                         const char *eyes = body_part(EYE);
 
-                        if (eyecount(gy.youmonst.data) != 1)
+                        if (eyecount(u.umonst->data) != 1)
                             eyes = makeplural(eyes);
                         Your("%s %s.", eyes, vtense(eyes, "water"));
                     }
diff --git a/src/eat.c b/src/eat.c
index e62a2ffea..1b58c316f 100644
--- a/src/eat.c
+++ b/src/eat.c
@@ -97,12 +97,12 @@ is_edible(struct obj *obj)
     /* above also prevents the Amulet from being eaten, so we must never
        allow fake amulets to be eaten either [which is already the case] */
 
-    if (gy.youmonst.data == &mons[PM_FIRE_ELEMENTAL]
+    if (u.umonst->data == &mons[PM_FIRE_ELEMENTAL]
         && is_flammable(obj))
         return TRUE;
 
-    if (metallivorous(gy.youmonst.data) && is_metallic(obj)
-        && (gy.youmonst.data != &mons[PM_RUST_MONSTER] || is_rustprone(obj)))
+    if (metallivorous(u.umonst->data) && is_metallic(obj)
+        && (u.umonst->data != &mons[PM_RUST_MONSTER] || is_rustprone(obj)))
         return TRUE;
 
     /* Ghouls only eat non-veggy corpses or eggs (see dogfood()) */
@@ -170,7 +170,7 @@ eatmdone(void)
     }
     /* update display */
     if (U_AP_TYPE) {
-        gy.youmonst.m_ap_type = M_AP_NOTHING;
+        u.umonst->m_ap_type = M_AP_NOTHING;
         newsym(u.ux, u.uy);
     }
     return 0;
@@ -186,11 +186,11 @@ eatmupdate(void)
     if (!ge.eatmbuf || gn.nomovemsg != ge.eatmbuf)
         return;
 
-    if (is_obj_mappear(&gy.youmonst,ORANGE) && !Hallucination) {
+    if (is_obj_mappear(u.umonst,ORANGE) && !Hallucination) {
         /* revert from hallucinatory to "normal" mimicking */
         altmsg = "You now prefer mimicking yourself.";
         altapp = GOLD_PIECE;
-    } else if (is_obj_mappear(&gy.youmonst,GOLD_PIECE) && Hallucination) {
+    } else if (is_obj_mappear(u.umonst,GOLD_PIECE) && Hallucination) {
         /* won't happen; anything which might make immobilized
            hero begin hallucinating (black light attack, theft
            of Grayswandir) will terminate the mimicry first */
@@ -207,7 +207,7 @@ eatmupdate(void)
         }
         gn.nomovemsg = strcpy(ge.eatmbuf, altmsg);
         /* update current image */
-        gy.youmonst.mappearance = altapp;
+        u.umonst->mappearance = altapp;
         newsym(u.ux, u.uy);
     }
 }
@@ -343,12 +343,12 @@ adj_victual_nutrition(void)
 
     assert(nut > 0);
     if (otyp == LEMBAS_WAFER) {
-        if (maybe_polyd(is_elf(gy.youmonst.data), Race_if(PM_ELF)))
+        if (maybe_polyd(is_elf(u.umonst->data), Race_if(PM_ELF)))
             nut += (nut + 2) / 4; /* 800 -> 1000 */
-        else if (maybe_polyd(is_orc(gy.youmonst.data), Race_if(PM_ORC)))
+        else if (maybe_polyd(is_orc(u.umonst->data), Race_if(PM_ORC)))
             nut -= (nut + 2) / 4; /* 800 -> 600 */
     } else if (otyp == CRAM_RATION) {
-        if (maybe_polyd(is_dwarf(gy.youmonst.data), Race_if(PM_DWARF)))
+        if (maybe_polyd(is_dwarf(u.umonst->data), Race_if(PM_DWARF)))
             nut += (nut + 3) / 6; /* 600 -> 700 */
     }
     nut = max(nut, 1);
@@ -554,7 +554,7 @@ done_eating(boolean message)
         gn.nomovemsg = 0;
     } else if (message) {
         You("finish %s %s.",
-            (gy.youmonst.data == &mons[PM_FIRE_ELEMENTAL]) ? "consuming"
+            (u.umonst->data == &mons[PM_FIRE_ELEMENTAL]) ? "consuming"
             : "eating",
             food_xname(piece, TRUE));
     }
@@ -612,18 +612,18 @@ eat_brains(
 
     /* previous tentacle attack might have triggered fatal passive
        counterattack [callers ought to be updated to avoid this situation] */
-    if (magr != &gy.youmonst && DEADMONSTER(magr)) {
+    if (magr != u.umonst && DEADMONSTER(magr)) {
         return M_ATTK_AGR_DIED;
     }
 
     if (noncorporeal(pd)) {
         if (visflag)
             pline("%s brain is unharmed.",
-                  (mdef == &gy.youmonst) ? "Your" : s_suffix(Monnam(mdef)));
+                  (mdef == u.umonst) ? "Your" : s_suffix(Monnam(mdef)));
         return M_ATTK_MISS; /* side-effects can't occur */
-    } else if (magr == &gy.youmonst) {
+    } else if (magr == u.umonst) {
         You("eat %s brain!", s_suffix(mon_nam(mdef)));
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         Your("brain is eaten!");
     } else { /* monster against monster */
         if (visflag && canspotmon(mdef))
@@ -634,7 +634,7 @@ eat_brains(
         /* mind flayer has attempted to eat the brains of a petrification
            inducing critter (most likely Medusa; attacking a cockatrice via
            tentacle-touch should have been caught before reaching this far) */
-        if (magr == &gy.youmonst) {
+        if (magr == u.umonst) {
             if (!Stone_resistance && !Stoned)
                 make_stoned(5L, (char *) 0, KILLED_BY_AN,
                             pmname(pd, Mgender(mdef)));
@@ -656,7 +656,7 @@ eat_brains(
         }
     }
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /*
          * player mind flayer is eating something's brain
          */
@@ -690,7 +690,7 @@ eat_brains(
            is cannibalism */
         (void) maybe_cannibal(monsndx(pd), TRUE);
 
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /*
          * monster mind flayer is eating hero's brain
          */
@@ -773,7 +773,7 @@ maybe_cannibal(int pm, boolean allowmsg)
            (even if having the form of something which doesn't care
            about cannibalism--hero's innate traits aren't altered) */
         && (your_race(fptr)
-            || (Upolyd && same_race(gy.youmonst.data, fptr))
+            || (Upolyd && same_race(u.umonst->data, fptr))
             || (ismnum(u.ulycn) && were_beastie(pm) == u.ulycn))) {
         if (allowmsg) {
             if (Upolyd && your_race(fptr))
@@ -793,7 +793,7 @@ cprefx(int pm)
     (void) maybe_cannibal(pm, TRUE);
     if (flesh_petrifies(&mons[pm])) {
         if (!Stone_resistance
-            && !(poly_when_stoned(gy.youmonst.data)
+            && !(poly_when_stoned(u.umonst->data)
                  && polymon(PM_STONE_GOLEM))) {
             /* if food was a tin, use it up early to keep it out of bones */
             if (svc.context.tin.tin)
@@ -849,7 +849,7 @@ cprefx(int pm)
         return;
     }
     case PM_GREEN_SLIME:
-        if (!Slimed && !Unchanging && !slimeproof(gy.youmonst.data)) {
+        if (!Slimed && !Unchanging && !slimeproof(u.umonst->data)) {
             You("don't feel very well.");
             make_slimed(10L, (char *) 0);
             delayed_killer(SLIMED, KILLED_BY_AN, "");
@@ -1191,7 +1191,7 @@ cpostfx(int pm)
         /*FALLTHRU*/
     case PM_SMALL_MIMIC:
         tmp += 20;
-        if (gy.youmonst.data->mlet != S_MIMIC && !Unchanging) {
+        if (u.umonst->data->mlet != S_MIMIC && !Unchanging) {
             char buf[BUFSZ];
             const char *tempshape = !Hallucination ? "a pile of gold"
                                                    : "an orange";
@@ -1210,14 +1210,14 @@ cpostfx(int pm)
                     Hallucination
                        ? "You suddenly dread being peeled and mimic %s again!"
                        : "You now prefer mimicking %s again.",
-                    an(Upolyd ? pmname(gy.youmonst.data, Ugender)
+                    an(Upolyd ? pmname(u.umonst->data, Ugender)
                               : gu.urace.noun));
             ge.eatmbuf = dupstr(buf);
             gn.nomovemsg = ge.eatmbuf;
             ga.afternmv = eatmdone;
             /* ??? what if this was set before? */
-            gy.youmonst.m_ap_type = M_AP_OBJECT;
-            gy.youmonst.mappearance = Hallucination ? ORANGE : GOLD_PIECE;
+            u.umonst->m_ap_type = M_AP_OBJECT;
+            u.umonst->mappearance = Hallucination ? ORANGE : GOLD_PIECE;
             newsym(u.ux, u.uy);
             curs_on_u();
             /* make gold symbol show up now */
@@ -1253,7 +1253,7 @@ cpostfx(int pm)
             if (svc.context.tin.tin) {
                 use_up_tin(svc.context.tin.tin);
                 /* most tin effects end up being skipped */
-                lesshungry(200 + (metallivorous(gy.youmonst.data) ? 5 : 0));
+                lesshungry(200 + (metallivorous(u.umonst->data) ? 5 : 0));
             }
 
             You("%s.", (pm == PM_GENETIC_ENGINEER)
@@ -1530,7 +1530,7 @@ consume_tin(const char *mesg)
     const char *what;
     int which, mnum, r, nutamt;
     /* if you've eaten tin itself, chance to not eat contents gets bypassed */
-    boolean always_eat = metallivorous(gy.youmonst.data);
+    boolean always_eat = metallivorous(u.umonst->data);
     struct obj *tin = svc.context.tin.tin;
 
     r = tin_variety(tin, FALSE);
@@ -1725,10 +1725,10 @@ start_tin(struct obj *otmp)
     const char *mesg = 0;
     int tmp;
 
-    if (metallivorous(gy.youmonst.data)) {
+    if (metallivorous(u.umonst->data)) {
         mesg = "You bite right into the metal tin...";
         tmp = 0;
-    } else if (cantwield(gy.youmonst.data)) { /* nohands || verysmall */
+    } else if (cantwield(u.umonst->data)) { /* nohands || verysmall */
         You("cannot handle the tin properly to open it.");
         return;
     } else if (otmp->blessed) {
@@ -1859,12 +1859,12 @@ eatcorpse(struct obj *otmp)
     int ll_conduct = 0;
     boolean stoneable,
             slimeable = (mnum == PM_GREEN_SLIME && !Slimed && !Unchanging
-                         && !slimeproof(gy.youmonst.data)),
+                         && !slimeproof(u.umonst->data)),
             glob = otmp->globby ? TRUE : FALSE;
 
     assert(ismnum(mnum));
     stoneable = (flesh_petrifies(&mons[mnum]) && !Stone_resistance
-                 && !poly_when_stoned(gy.youmonst.data));
+                 && !poly_when_stoned(u.umonst->data));
 
     /* KMH, conduct */
     if (!vegan(&mons[mnum]))
@@ -1978,13 +1978,13 @@ eatcorpse(struct obj *otmp)
     } else {
         /* yummy is always False for omnivores, palatable always True */
         boolean yummy = (vegan(&mons[mnum])
-                            ? (!carnivorous(gy.youmonst.data)
-                               && herbivorous(gy.youmonst.data))
-                            : (carnivorous(gy.youmonst.data)
-                               && !herbivorous(gy.youmonst.data))),
+                            ? (!carnivorous(u.umonst->data)
+                               && herbivorous(u.umonst->data))
+                            : (carnivorous(u.umonst->data)
+                               && !herbivorous(u.umonst->data))),
                 palatable = ((vegetarian(&mons[mnum])
-                              ? herbivorous(gy.youmonst.data)
-                              : carnivorous(gy.youmonst.data))
+                              ? herbivorous(u.umonst->data)
+                              : carnivorous(u.umonst->data))
                              && rn2(10)
                              && (rotted < 1 || !rn2((int) rotted + 1)));
         const char *pmxnam = food_xname(otmp, FALSE);
@@ -2129,9 +2129,9 @@ fprefx(struct obj *otmp)
         /* [satiation message may be inaccurate if eating gets interrupted] */
         break;
     case TRIPE_RATION:
-        if (carnivorous(gy.youmonst.data) && !humanoid(gy.youmonst.data)) {
+        if (carnivorous(u.umonst->data) && !humanoid(u.umonst->data)) {
             pline("This tripe ration is surprisingly good!");
-        } else if (maybe_polyd(is_orc(gy.youmonst.data), Race_if(PM_ORC))) {
+        } else if (maybe_polyd(is_orc(u.umonst->data), Race_if(PM_ORC))) {
             pline(Hallucination ? "Tastes great!  Less filling!"
                                 : "Mmm, tripe... not bad!");
         } else {
@@ -2146,10 +2146,10 @@ fprefx(struct obj *otmp)
         }
         break;
     case LEMBAS_WAFER:
-        if (maybe_polyd(is_orc(gy.youmonst.data), Race_if(PM_ORC))) {
+        if (maybe_polyd(is_orc(u.umonst->data), Race_if(PM_ORC))) {
             pline("%s", "!#?&* elf kibble!");
             break;
-        } else if (maybe_polyd(is_elf(gy.youmonst.data), Race_if(PM_ELF))) {
+        } else if (maybe_polyd(is_elf(u.umonst->data), Race_if(PM_ELF))) {
             pline("A little goes a long way.");
             break;
         }
@@ -2160,7 +2160,7 @@ fprefx(struct obj *otmp)
     case MEAT_RING:
         goto give_feedback;
     case CLOVE_OF_GARLIC:
-        if (is_undead(gy.youmonst.data)) {
+        if (is_undead(u.umonst->data)) {
             make_vomiting((long) rn1(svc.context.victual.reqtime, 5), FALSE);
             break;
         }
@@ -2293,7 +2293,7 @@ eataccessory(struct obj *otmp)
                 set_mimic_blocking();
                 see_monsters();
                 if (Invis && !oldprop && !ESee_invisible
-                    && !perceives(gy.youmonst.data) && !Blind) {
+                    && !perceives(u.umonst->data) && !Blind) {
                     newsym(u.ux, u.uy);
                     pline("Suddenly you can see yourself.");
                     makeknown(typ);
@@ -2511,7 +2511,7 @@ fpostfx(struct obj *otmp)
 {
     switch (otmp->otyp) {
     case SPRIG_OF_WOLFSBANE:
-        if (ismnum(u.ulycn) || is_were(gy.youmonst.data))
+        if (ismnum(u.ulycn) || is_were(u.umonst->data))
             you_unwere(TRUE);
         break;
     case CARROT:
@@ -2527,7 +2527,7 @@ fpostfx(struct obj *otmp)
                     "became literate by reading the fortune inside a cookie");
         break;
     case LUMP_OF_ROYAL_JELLY:
-        if (gy.youmonst.data == &mons[PM_KILLER_BEE] && !Unchanging
+        if (u.umonst->data == &mons[PM_KILLER_BEE] && !Unchanging
             && polymon(PM_QUEEN_BEE))
             break;
 
@@ -2561,7 +2561,7 @@ fpostfx(struct obj *otmp)
         if (ismnum(otmp->corpsenm)
             && flesh_petrifies(&mons[otmp->corpsenm])) {
             if (!Stone_resistance
-                && !(poly_when_stoned(gy.youmonst.data)
+                && !(poly_when_stoned(u.umonst->data)
                      && polymon(PM_STONE_GOLEM))) {
                 if (!Stoned) {
                     Sprintf(svk.killer.name, "%s egg",
@@ -2646,10 +2646,10 @@ edibility_prompts(struct obj *otmp)
         stoneorslime = (ismnum(mnum)
                         && flesh_petrifies(&mons[mnum])
                         && !Stone_resistance
-                        && !poly_when_stoned(gy.youmonst.data));
+                        && !poly_when_stoned(u.umonst->data));
 
         if (mnum == PM_GREEN_SLIME || otmp->otyp == GLOB_OF_GREEN_SLIME)
-            stoneorslime = (!Unchanging && !slimeproof(gy.youmonst.data));
+            stoneorslime = (!Unchanging && !slimeproof(u.umonst->data));
 
         if (cadaver && !nonrotting_corpse(mnum)) {
             long age = peek_at_iced_corpse_age(otmp);
@@ -2870,7 +2870,7 @@ doeat(void)
         You_cant("eat %s you're wearing.", something);
         return ECMD_OK;
     } else if (!(carried(otmp) ? retouch_object(&otmp, FALSE)
-                               : touch_artifact(otmp, &gy.youmonst))) {
+                               : touch_artifact(otmp, u.umonst))) {
         return ECMD_TIME; /* got blasted so use a turn */
     }
     if (is_metallic(otmp) && u.umonnum == PM_RUST_MONSTER
@@ -3172,9 +3172,9 @@ gethungry(void)
        will need to wear an Amulet of Unchanging so still burn a small
        amount of nutrition in the 'moves % 20' ring/amulet check below */
     if ((!Unaware || !rn2(10)) /* slow metabolic rate while asleep */
-        && (carnivorous(gy.youmonst.data)
-            || herbivorous(gy.youmonst.data)
-            || metallivorous(gy.youmonst.data))
+        && (carnivorous(u.umonst->data)
+            || herbivorous(u.umonst->data)
+            || metallivorous(u.umonst->data))
         && !Slow_digestion)
         u.uhunger--; /* ordinary food consumption */
 
@@ -3583,7 +3583,7 @@ floorfood(
     struct obj *otmp;
     char qbuf[QBUFSZ];
     char c;
-    struct permonst *uptr = gy.youmonst.data;
+    struct permonst *uptr = u.umonst->data;
     boolean feeding = !strcmp(verb, "eat"),        /* corpsecheck==0 */
             offering = !strcmp(verb, "sacrifice"); /* corpsecheck==1 */
 
@@ -3737,7 +3737,7 @@ vomit(void) /* A good idea from David Neves */
 {
     boolean spewed = FALSE;
 
-    if (cantvomit(gy.youmonst.data)) {
+    if (cantvomit(u.umonst->data)) {
         /* doesn't cure food poisoning; message assumes that we aren't
            dealing with some esoteric body_part() */
         Your("jaw gapes convulsively.");
@@ -3764,7 +3764,7 @@ vomit(void) /* A good idea from David Neves */
 
     if (spewed) {
         struct attack
-            *mattk = attacktype_fordmg(gy.youmonst.data, AT_BREA, AD_ACID);
+            *mattk = attacktype_fordmg(u.umonst->data, AT_BREA, AD_ACID);
 
         /* currently, only yellow dragons can breathe acid */
         if (mattk) {
@@ -3775,7 +3775,7 @@ vomit(void) /* A good idea from David Neves */
         if (IS_ALTAR(levl[u.ux][u.uy].typ))
             altar_wrath(u.ux, u.uy);
         /* if poly'd into acidic form, stomach acid is stronger than normal */
-        if (acidic(gy.youmonst.data)) {
+        if (acidic(u.umonst->data)) {
             /* TODO: if there's a web here, destroy that too (before ice) */
             if (is_ice(u.ux, u.uy))
                 melt_ice(u.ux, u.uy,
diff --git a/src/end.c b/src/end.c
index 389d8f548..ff67412eb 100644
--- a/src/end.c
+++ b/src/end.c
@@ -747,7 +747,7 @@ savelife(int how)
         /* might drop hero onto a trap that kills her all over again */
         expels(u.ustuck, u.ustuck->data, TRUE);
     } else if (u.ustuck) {
-        if (Upolyd && sticks(gy.youmonst.data))
+        if (Upolyd && sticks(u.umonst->data))
             You("release %s.", mon_nam(u.ustuck));
         else
             pline("%s releases you.", Monnam(u.ustuck));
diff --git a/src/engrave.c b/src/engrave.c
index 22ca30aaf..9768b00b6 100644
--- a/src/engrave.c
+++ b/src/engrave.c
@@ -189,7 +189,7 @@ can_reach_floor(boolean check_pit)
     struct trap *t;
 
     if (u.uswallow
-        || (u.ustuck && !sticks(gy.youmonst.data)
+        || (u.ustuck && !sticks(u.umonst->data)
             /* assume that arms are pinned rather than that the hero
                has been lifted up above the floor [doesn't explain
                how hero can attack the creature holding him or her;
@@ -200,10 +200,10 @@ can_reach_floor(boolean check_pit)
     /* Restricted/unskilled riders can't reach the floor */
     if (u.usteed && P_SKILL(P_RIDING) < P_BASIC)
         return FALSE;
-    if (u.uundetected && ceiling_hider(gy.youmonst.data))
+    if (u.uundetected && ceiling_hider(u.umonst->data))
         return FALSE;
 
-    if (Flying || gy.youmonst.data->msize >= MZ_HUGE)
+    if (Flying || u.umonst->data->msize >= MZ_HUGE)
         return TRUE;
 
     if (check_pit && (t = t_at(u.ux, u.uy)) != 0
@@ -531,7 +531,7 @@ u_can_engrave(void)
         return FALSE;
     }
 
-    if (cantwield(gy.youmonst.data)) {
+    if (cantwield(u.umonst->data)) {
         You_cant("even hold anything!");
         return FALSE;
     }
@@ -570,7 +570,7 @@ doengrave_ctx_init(struct _doengrave_ctx *de)
 
     if (de->oep)
         de->oetype = de->oep->engr_type;
-    if (is_demon(gy.youmonst.data) || is_vampire(gy.youmonst.data))
+    if (is_demon(u.umonst->data) || is_vampire(u.umonst->data))
         de->type = ENGR_BLOOD;
 
     de->jello = (u.uswallow && !(is_animal(u.ustuck->data)
@@ -1245,7 +1245,7 @@ doengrave(void)
 
     if (de->post_engr_text[0])
         pline("%s", de->post_engr_text);
-    if (de->doblind && !resists_blnd(&gy.youmonst)) {
+    if (de->doblind && !resists_blnd(u.umonst)) {
         You("are blinded by the flash!");
         make_blinded((long) rnd(50), FALSE);
         if (!Blind)
diff --git a/src/exper.c b/src/exper.c
index aee851126..14312e691 100644
--- a/src/exper.c
+++ b/src/exper.c
@@ -213,7 +213,7 @@ losexp(
        wizard mode request to reduce level; never fatal though */
     if (drainer && !strcmp(drainer, "#levelchange"))
         drainer = 0;
-    else if (resists_drli(&gy.youmonst))
+    else if (resists_drli(u.umonst))
         return;
 
     /* level-loss message; "Goodbye level 1." is fatal; divine anger
@@ -280,7 +280,7 @@ losexp(
         u.uexp = newuexp(u.ulevel) - 1;
 
     if (Upolyd) {
-        num = monhp_per_lvl(&gy.youmonst);
+        num = monhp_per_lvl(u.umonst);
         u.mhmax -= num;
         u.mh -= num;
         if (u.mh <= 0)
@@ -317,7 +317,7 @@ pluslvl(
     /* increase hit points (when polymorphed, do monster form first
        in order to retain normal human/whatever increase for later) */
     if (Upolyd) {
-        hpinc = monhp_per_lvl(&gy.youmonst);
+        hpinc = monhp_per_lvl(u.umonst);
         u.mh += hpinc;
         setuhpmax(u.mhmax, FALSE); /* acts as setmhmax() when Upolyd */
     }
diff --git a/src/explode.c b/src/explode.c
index 70f4c8307..41ef8a4df 100644
--- a/src/explode.c
+++ b/src/explode.c
@@ -24,13 +24,13 @@ enum explode_action {
 /* check if shield effects are needed for location affected by explosion */
 staticfn int
 explosionmask(
-    struct monst *m, /* target monster (might be youmonst) */
+    struct monst *m, /* target monster (might be u.umonst) */
     uchar adtyp,     /* damage type */
     char olet)       /* object class (only matters for AD_DISN) */
 {
     int res = EXPL_NONE;
 
-    if (m == &gy.youmonst) {
+    if (m == u.umonst) {
         switch (adtyp) {
         case AD_PHYS:
             /* leave 'res' with EXPL_NONE */
@@ -274,7 +274,7 @@ explode(
        so might get hit by double damage */
     grabbed = grabbing = FALSE;
     if (u.ustuck && !u.uswallow) {
-        if (Upolyd && sticks(gy.youmonst.data))
+        if (Upolyd && sticks(u.umonst->data))
             grabbing = TRUE;
         else
             grabbed = TRUE;
@@ -363,7 +363,7 @@ explode(
             explmask[i][j] = EXPL_NONE;
 
             if (u_at(xx, yy)) {
-                explmask[i][j] = explosionmask(&gy.youmonst, adtyp, olet);
+                explmask[i][j] = explosionmask(u.umonst, adtyp, olet);
             }
             /* can be both you and mtmp if you're swallowed or riding */
             mtmp = m_at(xx, yy);
@@ -611,10 +611,10 @@ explode(
         } else if (adtyp == AD_PHYS || adtyp == AD_ACID)
             damu = Maybe_Half_Phys(damu);
         if (adtyp == AD_FIRE) {
-            (void) burnarmor(&gy.youmonst);
+            (void) burnarmor(u.umonst);
             ignite_items(gi.invent);
         }
-        (void) destroy_items(&gy.youmonst, (int) adtyp, dam);
+        (void) destroy_items(u.umonst, (int) adtyp, dam);
 
         ugolemeffects((int) adtyp, damu);
         if (uhurt == 2) {
@@ -869,9 +869,9 @@ scatter(
 
                         if (gm.multi)
                             nomul(0);
-                        dam = dmgval(stmp->obj, &gy.youmonst);
+                        dam = dmgval(stmp->obj, u.umonst);
                         hitvalu = 8 + stmp->obj->spe;
-                        if (bigmonst(gy.youmonst.data))
+                        if (bigmonst(u.umonst->data))
                             hitvalu++;
                         hitu = thitu(hitvalu, Maybe_Half_Phys(dam),
                                      &stmp->obj, (char *) 0);
@@ -936,8 +936,8 @@ scatter(
         newsym(x, y);
     }
     newsym(sx, sy);
-    if (u_at(sx, sy) && u.uundetected && hides_under(gy.youmonst.data))
-        (void) hideunder(&gy.youmonst);
+    if (u_at(sx, sy) && u.uundetected && hides_under(u.umonst->data))
+        (void) hideunder(u.umonst);
     if (((mtmp = m_at(sx, sy)) != 0) && mtmp->mtrapped)
         mtmp->mtrapped = 0;
     maybe_unhide_at(sx, sy);
diff --git a/src/fountain.c b/src/fountain.c
index 78925b04c..aeef118bb 100644
--- a/src/fountain.c
+++ b/src/fountain.c
@@ -791,7 +791,7 @@ dipsink(struct obj *obj)
            breathless for this message */
         pline("A wisp of vapor rises up...");
         /* NB: potionbreathe calls trycall or makeknown as appropriate */
-        if (!breathless(gy.youmonst.data) || haseyes(gy.youmonst.data))
+        if (!breathless(u.umonst->data) || haseyes(u.umonst->data))
             potionbreathe(obj);
         break;
     }
diff --git a/src/hack.c b/src/hack.c
index 367591eff..4e5ff410b 100644
--- a/src/hack.c
+++ b/src/hack.c
@@ -152,11 +152,11 @@ could_move_onto_boulder(coordxy sx, coordxy sy)
         return FALSE;
     /* can if a giant, unless doing so allows hero to pass into a
        diagonal squeeze at the same time */
-    if (throws_rocks(gy.youmonst.data))
+    if (throws_rocks(u.umonst->data))
         return (!u.dx || !u.dy || !(IS_OBSTRUCTED(levl[u.ux][sy].typ)
                                     && IS_OBSTRUCTED(levl[sx][u.uy].typ)));
     /* can if tiny (implies carrying very little else couldn't move at all) */
-    if (verysmall(gy.youmonst.data))
+    if (verysmall(u.umonst->data))
         return TRUE;
     /* can squeeze to spot if carrying extremely little, otherwise can't */
     return squeezeablylightinvent();
@@ -189,7 +189,7 @@ dopush(
                     || svm.moves < gb.bldrpushtime);
         what = givemesg ? the(xname(otmp)) : 0;
         if (!u.usteed) {
-            easypush = throws_rocks(gy.youmonst.data);
+            easypush = throws_rocks(u.umonst->data);
             if (givemesg)
                 pline("With %s effort you move %s.",
                       easypush ? "little" : "great", what);
@@ -261,7 +261,7 @@ cannot_push_msg(struct obj *otmp, coordxy sx, coordxy sy)
 staticfn int
 cannot_push(struct obj *otmp, coordxy sx, coordxy sy)
 {
-    if (throws_rocks(gy.youmonst.data)) {
+    if (throws_rocks(u.umonst->data)) {
         boolean
             canpickup = (!Sokoban
                          /* similar exception as in can_lift():
@@ -388,7 +388,7 @@ moverock_core(coordxy sx, coordxy sy)
             int res;
 
             feel_location(sx, sy); /* same for all 3 if/else-if/else cases */
-            if (throws_rocks(gy.youmonst.data)) {
+            if (throws_rocks(u.umonst->data)) {
                 /* player has used 'm<dir>' to move, so step to boulder's
                    spot without pushing it; hero is poly'd into a giant,
                    so exotic forms of locomotion are out, but might be
@@ -423,7 +423,7 @@ moverock_core(coordxy sx, coordxy sy)
             /* Give them a chance to climb over it? */
             return -1;
         }
-        if (verysmall(gy.youmonst.data) && !u.usteed) {
+        if (verysmall(u.umonst->data) && !u.usteed) {
             if (Blind)
                 feel_location(sx, sy);
             pline("You're too small to push that %s.", xname(otmp));
@@ -667,7 +667,7 @@ still_chewing(coordxy x, coordxy y)
         nomul(0);
         return 1;
     } else if (lev->typ == IRONBARS
-               && metallivorous(gy.youmonst.data) && u.uhunger > 1500) {
+               && metallivorous(u.umonst->data) && u.uhunger > 1500) {
         /* finishing eating via 'morehungry()' doesn't handle choking */
         You("are too full to eat the bars.");
         nomul(0);
@@ -767,7 +767,7 @@ still_chewing(coordxy x, coordxy y)
         digtxt = "chew through the tree.";
         lev->typ = ROOM;
     } else if (lev->typ == IRONBARS) {
-        if (metallivorous(gy.youmonst.data)) { /* should always be True here */
+        if (metallivorous(u.umonst->data)) { /* should always be True here */
             /* arbitrary amount; unlike proper eating, nutrition is
                bestowed in a lump sum at the end */
             int nut = (int) objects[HEAVY_IRON_BALL].oc_weight;
@@ -955,7 +955,7 @@ cant_squeeze_thru(struct monst *mon)
     int amt;
     struct permonst *ptr = mon->data;
 
-    if ((mon == &gy.youmonst) ? Passes_walls : passes_walls(ptr))
+    if ((mon == u.umonst) ? Passes_walls : passes_walls(ptr))
         return 0;
 
     /* too big? */
@@ -965,13 +965,13 @@ cant_squeeze_thru(struct monst *mon)
         return 1;
 
     /* lugging too much junk? */
-    amt = (mon == &gy.youmonst) ? inv_weight() + weight_cap()
+    amt = (mon == u.umonst) ? inv_weight() + weight_cap()
                                : curr_mon_load(mon);
     if (amt > WT_TOOMUCH_DIAGONAL)
         return 2;
 
     /* Sokoban restriction applies to hero only */
-    if (mon == &gy.youmonst && Sokoban)
+    if (mon == u.umonst && Sokoban)
         return 3;
 
     /* can squeeze through */
@@ -1023,19 +1023,19 @@ test_move(
             return FALSE;
         } else if (tmpr->typ == IRONBARS) {
             if (mode == DO_MOVE
-                && (dmgtype(gy.youmonst.data, AD_RUST)
-                    || dmgtype(gy.youmonst.data, AD_CORR)
-                    || metallivorous(gy.youmonst.data))
+                && (dmgtype(u.umonst->data, AD_RUST)
+                    || dmgtype(u.umonst->data, AD_CORR)
+                    || metallivorous(u.umonst->data))
                 && still_chewing(x, y)) {
                 return FALSE;
             }
-            if (!(Passes_walls || passes_bars(gy.youmonst.data))) {
+            if (!(Passes_walls || passes_bars(u.umonst->data))) {
                 if (mode == DO_MOVE && flags.mention_walls)
                     You("cannot pass through the bars.");
                 return FALSE;
             }
-        } else if (tunnels(gy.youmonst.data)
-                   && !needspick(gy.youmonst.data)) {
+        } else if (tunnels(u.umonst->data)
+                   && !needspick(u.umonst->data)) {
             /* Eat the rock. */
             if (mode == DO_MOVE && still_chewing(x, y))
                 return FALSE;
@@ -1077,21 +1077,21 @@ test_move(
                 feel_location(x, y);
             if (Passes_walls) {
                 ; /* do nothing */
-            } else if (can_ooze(&gy.youmonst)) {
+            } else if (can_ooze(u.umonst)) {
                 if (mode == DO_MOVE)
                     You("ooze under the door.");
             } else if (Underwater) {
                 if (mode == DO_MOVE)
                     pline("There is an obstacle there.");
                 return FALSE;
-            } else if (tunnels(gy.youmonst.data)
-                       && !needspick(gy.youmonst.data)) {
+            } else if (tunnels(u.umonst->data)
+                       && !needspick(u.umonst->data)) {
                 /* Eat the door. */
                 if (mode == DO_MOVE && still_chewing(x, y))
                     return FALSE;
             } else {
                 if (mode == DO_MOVE) {
-                    if (amorphous(gy.youmonst.data))
+                    if (amorphous(u.umonst->data))
                         You("try to ooze under the door,"
                             " but can't squeeze your possessions through.");
                     if (flags.autoopen && !svc.context.run
@@ -1150,10 +1150,10 @@ test_move(
             }
         }
     }
-    if (dx && dy && bad_rock(gy.youmonst.data, ux, y)
-        && bad_rock(gy.youmonst.data, x, uy)) {
+    if (dx && dy && bad_rock(u.umonst->data, ux, y)
+        && bad_rock(u.umonst->data, x, uy)) {
         /* Move at a diagonal. */
-        switch (cant_squeeze_thru(&gy.youmonst)) {
+        switch (cant_squeeze_thru(u.umonst)) {
         case 3:
             if (mode == DO_MOVE)
                 You("cannot pass that way.");
@@ -1222,7 +1222,7 @@ test_move(
         }
         if (mode == DO_MOVE) {
             /* tunneling monsters will chew before pushing */
-            if (tunnels(gy.youmonst.data) && !needspick(gy.youmonst.data)
+            if (tunnels(u.umonst->data) && !needspick(u.umonst->data)
                 && !Sokoban) {
                 if (still_chewing(x, y))
                     return FALSE;
@@ -1239,8 +1239,8 @@ test_move(
             if (sobj_at(BOULDER, ux, uy) && !Sokoban) {
                 if (!Passes_walls
                     && !could_move_onto_boulder(ux, uy)
-                    && !(tunnels(gy.youmonst.data)
-                         && !needspick(gy.youmonst.data))
+                    && !(tunnels(u.umonst->data)
+                         && !needspick(u.umonst->data))
                     && !carrying(PICK_AXE) && !carrying(DWARVISH_MATTOCK)
                     && !((obj = carrying(WAN_DIGGING))
                          && !objects[obj->otyp].oc_name_known))
@@ -1372,7 +1372,7 @@ findtravelpath(int mode)
                     if (!isok(nx, ny)
                         || ((mode == TRAVP_GUESS) && !couldsee(nx, ny)))
                         continue;
-                    if ((!Passes_walls && !can_ooze(&gy.youmonst)
+                    if ((!Passes_walls && !can_ooze(u.umonst)
                          && closed_door(x, y))
                         || (sobj_at(BOULDER, x, y)
                             && !could_move_onto_boulder(x, y))
@@ -1693,7 +1693,7 @@ trapmove(
 boolean
 u_rooted(void)
 {
-    if (!gy.youmonst.data->mmove) {
+    if (!u.umonst->data->mmove) {
         You("are rooted %s.",
             Levitation || Is_airlevel(&u.uz) || Is_waterlevel(&u.uz)
                 ? "in place"
@@ -1825,14 +1825,14 @@ u_locomotion(const char *def)
        or boots/ring/spell of levitation */
     return Levitation ? (capitalize ? "Float" : "float")
            : Flying ? (capitalize ? "Fly" : "fly")
-             : locomotion(gy.youmonst.data, def);
+             : locomotion(u.umonst->data, def);
 }
 
 /* Return a simplified floor solid/liquid state based on hero's state */
 staticfn schar
 u_simple_floortyp(coordxy x, coordxy y)
 {
-    boolean u_in_air = (Levitation || Flying || !grounded(gy.youmonst.data));
+    boolean u_in_air = (Levitation || Flying || !grounded(u.umonst->data));
 
     if (is_waterwall(x, y))
         return WATER; /* wall of water, fly/lev does not matter */
@@ -1978,8 +1978,8 @@ domove_attackmon_at(
                            && (NODIAG(u.umonnum)
                                || (bad_rock(mtmp->data, x, u.uy0)
                                    && bad_rock(mtmp->data, u.ux0, y))
-                               || (bad_rock(gy.youmonst.data, u.ux0, y)
-                                   && bad_rock(gy.youmonst.data, x, u.uy0))))
+                               || (bad_rock(u.umonst->data, u.ux0, y)
+                                   && bad_rock(u.umonst->data, x, u.uy0))))
                       && goodpos(u.ux0, u.uy0, mtmp, GP_ALLOW_U));
         /* if not displacing, try to attack; note that it might evade;
            also, we don't attack tame or peaceful when safemon() */
@@ -2244,7 +2244,7 @@ domove_fight_empty(coordxy x, coordxy y)
         || (glyph_is_invisible(glyph) && !m_at(x, y)
             && !svc.context.nopick)) {
         struct obj *boulder = 0;
-        boolean explo = (Upolyd && attacktype(gy.youmonst.data, AT_EXPL)),
+        boolean explo = (Upolyd && attacktype(u.umonst->data, AT_EXPL)),
                 solid = (off_edge || (!accessible(x, y)
                                       || IS_FURNITURE(levl[x][y].typ)));
         char buf[BUFSZ];
@@ -2323,7 +2323,7 @@ domove_fight_empty(coordxy x, coordxy y)
         nomul(0);
         if (explo) {
             struct attack *attk
-                       = attacktype_fordmg(gy.youmonst.data, AT_EXPL, AD_ANY);
+                       = attacktype_fordmg(u.umonst->data, AT_EXPL, AD_ANY);
 
             /* no monster has been attacked so we have bypassed explum() */
             wake_nearto(u.ux, u.uy, 7 * 7); /* same radius as explum() */
@@ -2396,7 +2396,7 @@ staticfn void
 slippery_ice_fumbling(void)
 {
     boolean on_ice = !Levitation && is_ice(u.ux, u.uy);
-    struct monst *iceskater = u.usteed ? u.usteed : &gy.youmonst;
+    struct monst *iceskater = u.usteed ? u.usteed : u.umonst;
 
     if (on_ice) {
         if ((uarmf && objdescr_is(uarmf, "snow boots"))
@@ -2435,7 +2435,7 @@ impaired_movement(coordxy *x, coordxy *y)
             confdir(TRUE);
             *x = u.ux + u.dx;
             *y = u.uy + u.dy;
-        } while (!isok(*x, *y) || bad_rock(gy.youmonst.data, *x, *y));
+        } while (!isok(*x, *y) || bad_rock(u.umonst->data, *x, *y));
     }
     return FALSE;
 }
@@ -2475,7 +2475,7 @@ avoid_moving_on_liquid(
         /* and you know you won't fall in */
         && (in_air || Known_lwalking || (is_pool(x, y) && Known_wwalking))
         && !(IS_WATERWALL(levl[x][y].typ) || levl[x][y].typ == LAVAWALL)) {
-        /* XXX: should send 'is_clinger(gy.youmonst.data)' here once clinging
+        /* XXX: should send 'is_clinger(u.umonst->data)' here once clinging
            polyforms are allowed to move over water */
         return FALSE; /* liquid is safe to traverse */
     } else if (is_pool_or_lava(x, y) && levl[x][y].seenv) {
@@ -2558,7 +2558,7 @@ avoid_trap_andor_region(coordxy x, coordxy y)
         /* check whether attempted move will be viable */
         && test_move(u.ux, u.uy, u.dx, u.dy, TEST_MOVE)
         /* override confirmation if the trap is harmless to the hero */
-        && (immune_to_trap(&gy.youmonst, trap->ttyp) != TRAP_CLEARLY_IMMUNE
+        && (immune_to_trap(u.umonst, trap->ttyp) != TRAP_CLEARLY_IMMUNE
             /* Hallucination: all traps still show as ^, but the
                hero can't tell what they are, so treat as dangerous */
             || Hallucination)) {
@@ -2644,7 +2644,7 @@ escape_from_sticky_mon(coordxy x, coordxy y)
         if (!m_next2u(u.ustuck)) {
             /* perhaps it fled (or was teleported or ... ) */
             set_ustuck((struct monst *) 0);
-        } else if (sticks(gy.youmonst.data)) {
+        } else if (sticks(u.umonst->data)) {
             /* When polymorphed into a sticking monster,
              * u.ustuck means it's stuck to you, not you to it.
              */
@@ -2874,7 +2874,7 @@ domove_core(void)
     u.ux += u.dx;
     u.uy += u.dy;
 
-    m_postmove_effect(&gy.youmonst);
+    m_postmove_effect(u.umonst);
 
     if (u.usteed) {
         u.usteed->mx = u.ux;
@@ -2943,12 +2943,12 @@ domove_core(void)
 
     /* your tread on the ground may disturb the slumber of nearby zombies */
     if (!Levitation && !Flying && !Stealth
-        && gy.youmonst.data->cwt >= (WT_ELF / 2))
+        && u.umonst->data->cwt >= (WT_ELF / 2))
         disturb_buried_zombies(u.ux, u.uy);
 
-    if (hides_under(gy.youmonst.data) || gy.youmonst.data->mlet == S_EEL
+    if (hides_under(u.umonst->data) || u.umonst->data->mlet == S_EEL
         || u.dx || u.dy)
-        (void) hideunder(&gy.youmonst);
+        (void) hideunder(u.umonst);
 
     /*
      * Mimics (or whatever) become noticeable if they move and are
@@ -2957,7 +2957,7 @@ domove_core(void)
      */
     if ((u.dx || u.dy) && (U_AP_TYPE == M_AP_OBJECT
                            || U_AP_TYPE == M_AP_FURNITURE))
-        gy.youmonst.m_ap_type = M_AP_NOTHING;
+        u.umonst->m_ap_type = M_AP_NOTHING;
 
     check_leash(u.ux0, u.uy0);
 
@@ -3804,8 +3804,8 @@ pickup_checks(void)
         }
     }
     if (is_pool(u.ux, u.uy)) {
-        if (Wwalking || is_floater(gy.youmonst.data)
-            || is_clinger(gy.youmonst.data) || (Flying && !Breathless)) {
+        if (Wwalking || is_floater(u.umonst->data)
+            || is_clinger(u.umonst->data) || (Flying && !Breathless)) {
             You("cannot dive into the %s to pick things up.",
                 hliquid("water"));
             return 0;
@@ -3815,11 +3815,11 @@ pickup_checks(void)
         }
     }
     if (is_lava(u.ux, u.uy)) {
-        if (Wwalking || is_floater(gy.youmonst.data)
-            || is_clinger(gy.youmonst.data) || (Flying && !Breathless)) {
+        if (Wwalking || is_floater(u.umonst->data)
+            || is_clinger(u.umonst->data) || (Flying && !Breathless)) {
             You_cant("reach the bottom to pick things up.");
             return 0;
-        } else if (!likes_lava(gy.youmonst.data)) {
+        } else if (!likes_lava(u.umonst->data)) {
             You("would burn to a crisp trying to pick things up.");
             return 0;
         }
@@ -4079,7 +4079,7 @@ boolean
 crawl_destination(coordxy x, coordxy y)
 {
     /* is location ok in general? */
-    if (!goodpos(x, y, &gy.youmonst, 0))
+    if (!goodpos(x, y, u.umonst, 0))
         return FALSE;
 
     /* orthogonal movement is unrestricted when destination is ok */
@@ -4095,9 +4095,9 @@ crawl_destination(coordxy x, coordxy y)
     if (IS_DOOR(levl[x][y].typ) && (!doorless_door(x, y) || block_door(x, y)))
         return FALSE;
     /* finally, are we trying to squeeze through a too-narrow gap? */
-    return !(bad_rock(gy.youmonst.data, u.ux, y)
-             && bad_rock(gy.youmonst.data, x, u.uy)
-             && cant_squeeze_thru(&gy.youmonst));
+    return !(bad_rock(u.umonst->data, u.ux, y)
+             && bad_rock(u.umonst->data, x, u.uy)
+             && cant_squeeze_thru(u.umonst));
 }
 
 /* something like lookaround, but we are not running */
@@ -4367,14 +4367,14 @@ weight_cap(void)
                + WT_WEIGHTCAP_SPARE;
     if (Upolyd) {
         /* consistent with can_carry() in mon.c */
-        if (gy.youmonst.data->mlet == S_NYMPH)
+        if (u.umonst->data->mlet == S_NYMPH)
             carrcap = MAX_CARR_CAP;
-        else if (!gy.youmonst.data->cwt)
-            carrcap = (carrcap * (long) gy.youmonst.data->msize) / MZ_HUMAN;
-        else if (!strongmonst(gy.youmonst.data)
-                 || (strongmonst(gy.youmonst.data)
-                     && (gy.youmonst.data->cwt > WT_HUMAN)))
-            carrcap = (carrcap * (long) gy.youmonst.data->cwt / WT_HUMAN);
+        else if (!u.umonst->data->cwt)
+            carrcap = (carrcap * (long) u.umonst->data->msize) / MZ_HUMAN;
+        else if (!strongmonst(u.umonst->data)
+                 || (strongmonst(u.umonst->data)
+                     && (u.umonst->data->cwt > WT_HUMAN)))
+            carrcap = (carrcap * (long) u.umonst->data->cwt / WT_HUMAN);
     }
 
     if (Levitation || Is_airlevel(&u.uz) /* pugh@cornell */
@@ -4411,7 +4411,7 @@ inv_weight(void)
     while (otmp) {
         if (otmp->oclass == COIN_CLASS)
             wt += (int) (((long) otmp->quan + 50L) / 100L);
-        else if (otmp->otyp != BOULDER || !throws_rocks(gy.youmonst.data))
+        else if (otmp->otyp != BOULDER || !throws_rocks(u.umonst->data))
             wt += otmp->owt;
         otmp = otmp->nobj;
     }
diff --git a/src/iactions.c b/src/iactions.c
index ca00a2be6..b12b61c18 100644
--- a/src/iactions.c
+++ b/src/iactions.c
@@ -605,7 +605,7 @@ itemactions(struct obj *otmp)
 
     /* w: wield, hold in hands, works on everything but with different
        advice text; not mentioned for things that are already wielded */
-    if (otmp == uwep || cantwield(gy.youmonst.data)) {
+    if (otmp == uwep || cantwield(u.umonst->data)) {
         ; /* either already wielded or can't wield anything; skip 'w' */
     } else if (otmp->oclass == WEAPON_CLASS || is_weptool(otmp)
                || is_wet_towel(otmp) || otmp->otyp == HEAVY_IRON_BALL) {
@@ -674,7 +674,7 @@ itemactions(struct obj *otmp)
         /* if already two-weaponing, no special checks needed to toggle off */
         && (u.twoweap
         /* but if not, try to filter most "you can't do that" here */
-            || (could_twoweap(gy.youmonst.data) && !uarms
+            || (could_twoweap(u.umonst->data) && !uarms
                 && uwep && MAYBETWOWEAPON(uwep)
                 && uswapwep && MAYBETWOWEAPON(uswapwep)))) {
         Sprintf(buf, "Toggle two-weapon combat %s", u.twoweap ? "off" : "on");
diff --git a/src/insight.c b/src/insight.c
index ab2bcd1a1..12fc1e773 100644
--- a/src/insight.c
+++ b/src/insight.c
@@ -489,8 +489,8 @@ background_enlightenment(int unused_mode UNUSED, int final)
        the player to know he's not a samurai at the moment... */
     if (Upolyd) {
         char anbuf[20]; /* includes trailing space; [4] suffices */
-        struct permonst *uasmon = gy.youmonst.data;
-        boolean altphrasing = vampshifted(&gy.youmonst);
+        struct permonst *uasmon = u.umonst->data;
+        boolean altphrasing = vampshifted(u.umonst);
 
         tmpbuf[0] = '\0';
         /* here we always use current gender, not saved role gender */
@@ -498,7 +498,7 @@ background_enlightenment(int unused_mode UNUSED, int final)
             Sprintf(tmpbuf, "%s ", genders[flags.female ? 1 : 0].adj);
         if (altphrasing)
             Sprintf(eos(tmpbuf), "%s in ",
-                    pmname(&mons[gy.youmonst.cham],
+                    pmname(&mons[u.umonst->cham],
                            flags.female ? FEMALE : MALE));
         Snprintf(buf, sizeof(buf), "%s%s%s%s form",
                  !final ? "currently " : "",
@@ -1068,7 +1068,7 @@ status_enlightenment(int mode, int final)
         if (wizard && (HBlinded == BlindedTimeout && !Blindfolded))
             Sprintf(eos(buf), " (%ld)", BlindedTimeout);
         /* !haseyes: avoid "you are innately blind innately" */
-        you_are(buf, !haseyes(gy.youmonst.data) ? "" : from_what(BLINDED));
+        you_are(buf, !haseyes(u.umonst->data) ? "" : from_what(BLINDED));
     }
     if (Deaf)
         you_are("deaf", from_what(DEAF));
@@ -1122,7 +1122,7 @@ status_enlightenment(int mode, int final)
             Sprintf(eos(buf), " (%u)", u.uswldtim);
         you_are(buf, "");
     } else if (u.ustuck) {
-        boolean ustick = (Upolyd && sticks(gy.youmonst.data));
+        boolean ustick = (Upolyd && sticks(u.umonst->data));
         int dx = u.ustuck->mx - u.ux, dy = u.ustuck->my - u.uy;
 
         Snprintf(buf, sizeof buf, "%s %s (%s)",
@@ -1736,7 +1736,7 @@ attributes_enlightenment(
     }
     /* including this might bring attention to the fact that ceiling
        clinging has inconsistencies... */
-    if (is_clinger(gy.youmonst.data)) {
+    if (is_clinger(u.umonst->data)) {
         boolean has_lid = has_ceiling(&u.uz);
 
         if (has_lid && !u.uinwater) {
@@ -1797,7 +1797,7 @@ attributes_enlightenment(
         if (prot)
             you_have(enlght_combatinc("defense", prot, final, buf), "");
     }
-    if ((armpro = magic_negation(&gy.youmonst)) > 0) {
+    if ((armpro = magic_negation(u.umonst)) > 0) {
         /* magic cancellation factor, conferred by worn armor */
         static const char *const mc_types[] = {
             "" /*ordinary*/, "warded", "guarded", "protected",
@@ -1863,20 +1863,20 @@ attributes_enlightenment(
         && !(final == ENL_GAMEOVERDEAD
              && u.umonnum == PM_GREEN_SLIME && !Unchanging)) {
         /* foreign shape (except were-form which is handled below) */
-        if (!vampshifted(&gy.youmonst))
+        if (!vampshifted(u.umonst))
             Sprintf(buf, "polymorphed into %s",
-                    an(pmname(gy.youmonst.data,
+                    an(pmname(u.umonst->data,
                               flags.female ? FEMALE : MALE)));
         else
             Sprintf(buf, "polymorphed into %s in %s form",
-                    an(pmname(&mons[gy.youmonst.cham],
+                    an(pmname(&mons[u.umonst->cham],
                               flags.female ? FEMALE : MALE)),
-                    pmname(gy.youmonst.data, flags.female ? FEMALE : MALE));
+                    pmname(u.umonst->data, flags.female ? FEMALE : MALE));
         if (wizard)
             Sprintf(eos(buf), " (%d)", u.mtimedone);
         you_are(buf, "");
     }
-    if (lays_eggs(gy.youmonst.data) && flags.female) /* Upolyd */
+    if (lays_eggs(u.umonst->data) && flags.female) /* Upolyd */
         you_can("lay eggs", "");
     if (ismnum(u.ulycn)) {
         /* "you are a werecreature [in beast form]" */
@@ -2046,7 +2046,7 @@ youhiding(boolean via_enlghtmt, /* enlightenment line vs topl message */
            for the hypothetical furniture and monster cases */
         bp = eos(strcpy(buf, "mimicking"));
         if (U_AP_TYPE == M_AP_OBJECT) {
-            Sprintf(bp, " %s", an(simple_typename(gy.youmonst.mappearance)));
+            Sprintf(bp, " %s", an(simple_typename(u.umonst->mappearance)));
         } else if (U_AP_TYPE == M_AP_FURNITURE) {
             Strcpy(bp, " something");
         } else if (U_AP_TYPE == M_AP_MONSTER) {
@@ -2056,15 +2056,15 @@ youhiding(boolean via_enlghtmt, /* enlightenment line vs topl message */
         }
     } else if (u.uundetected) {
         bp = eos(buf); /* points past "hiding" */
-        if (gy.youmonst.data->mlet == S_EEL) {
+        if (u.umonst->data->mlet == S_EEL) {
             if (is_pool(u.ux, u.uy))
                 Sprintf(bp, " in the %s", waterbody_name(u.ux, u.uy));
-        } else if (hides_under(gy.youmonst.data)) {
+        } else if (hides_under(u.umonst->data)) {
             struct obj *o = svl.level.objects[u.ux][u.uy];
 
             if (o)
                 Sprintf(bp, " underneath %s", ansimpleoname(o));
-        } else if (is_clinger(gy.youmonst.data) || Flying) {
+        } else if (is_clinger(u.umonst->data) || Flying) {
             /* Flying: 'lurker above' hides on ceiling but doesn't cling */
             Sprintf(bp, " on the %s", ceiling(u.ux, u.uy));
         } else {
@@ -3368,7 +3368,7 @@ mstatusline(struct monst *mtmp)
     if (mtmp == u.ustuck) {
         struct permonst *pm = u.ustuck->data;
 
-        /* being swallowed/engulfed takes priority over sticks(youmonst);
+        /* being swallowed/engulfed takes priority over sticks(u.umonst);
            this used to have that backwards and checked sticks() first */
         Strcat(info, u.uswallow ? (digests(pm)
                                    ? ", digesting you"
@@ -3380,9 +3380,9 @@ mstatusline(struct monst *mtmp)
                                    : (is_animal(pm) && !enfolds(pm))
                                      ? ", swallowing you"
                                      : ", engulfing you")
-                     /* !u.uswallow; if both youmonst and ustuck are holders,
-                        youmonst wins */
-                     : (!sticks(gy.youmonst.data) ? ", holding you"
+                     /* !u.uswallow; if both u.umonst and ustuck are holders,
+                        u.umonst wins */
+                     : (!sticks(u.umonst->data) ? ", holding you"
                                                  : ", held by you"));
     }
     if (mtmp == u.usteed) {
@@ -3445,7 +3445,7 @@ ustatusline(void)
         Strcat(info, ", blind");
         if (u.ucreamed) {
             if ((long) u.ucreamed < BlindedTimeout || Blindfolded
-                || !haseyes(gy.youmonst.data))
+                || !haseyes(u.umonst->data))
                 Strcat(info, ", cover");
             Strcat(info, "ed by sticky goop");
         } /* note: "goop" == "glop"; variation is intentional */
@@ -3481,7 +3481,7 @@ ustatusline(void)
         if (u.uswallow)
             Strcat(info, digests(u.ustuck->data) ? ", being digested by "
                                                  : ", engulfed by ");
-        else if (!sticks(gy.youmonst.data))
+        else if (!sticks(u.umonst->data))
             Strcat(info, ", held by ");
         else
             Strcat(info, ", holding ");
diff --git a/src/invent.c b/src/invent.c
index a34517acf..6995bfd4e 100644
--- a/src/invent.c
+++ b/src/invent.c
@@ -1224,7 +1224,7 @@ hold_another_object(
         /* in case touching this object turns out to be fatal */
         place_object(obj, u.ux, u.uy);
 
-        if (!touch_artifact(obj, &gy.youmonst)) {
+        if (!touch_artifact(obj, u.umonst)) {
             obj_extract_self(obj); /* remove it from the floor */
             dropy(obj);            /* now put it back again :-) */
             return obj;
@@ -1496,7 +1496,7 @@ carrying(int type)
 {
     struct obj *otmp;
 
-    /* this could be replaced by 'return m_carrying(&gy.youmonst, type);' */
+    /* this could be replaced by 'return m_carrying(u.umonst, type);' */
     for (otmp = gi.invent; otmp; otmp = otmp->nobj)
         if (otmp->otyp == type)
             break;
@@ -4269,7 +4269,7 @@ look_here(
                       : (otmp->quan > 1L) ? "They're"
                         : "It's",
                       corpse_xname(otmp, (const char *) 0, CXN_ARTICLE),
-                      poly_when_stoned(gy.youmonst.data) ? ""
+                      poly_when_stoned(u.umonst->data) ? ""
                       : ", unfortunately");
                 feel_cockatrice(otmp, FALSE);
                 break;
@@ -4348,7 +4348,7 @@ feel_cockatrice(struct obj *otmp, boolean force_touch)
         /* "the <cockatrice> corpse" */
         Strcpy(kbuf, corpse_xname(otmp, (const char *) 0, CXN_PFX_THE));
 
-        if (poly_when_stoned(gy.youmonst.data))
+        if (poly_when_stoned(u.umonst->data))
             You("touched %s with your bare %s.", kbuf,
                 makeplural(body_part(HAND)));
         else
@@ -4778,8 +4778,8 @@ useupf(struct obj *obj, long numused)
             (void) stolen_value(otmp, otmp->ox, otmp->oy, FALSE, FALSE);
     }
     delobj(otmp);
-    if (at_u && u.uundetected && hides_under(gy.youmonst.data))
-        (void) hideunder(&gy.youmonst);
+    if (at_u && u.uundetected && hides_under(u.umonst->data))
+        (void) hideunder(u.umonst);
 }
 
 /*
@@ -5360,7 +5360,7 @@ display_minventory(
         /* Fool the 'weapon in hand' routine into
          * displaying 'weapon in claw', etc. properly.
          */
-        gy.youmonst.data = mon->data;
+        u.umonst->data = mon->data;
         /* in case inside a shop, don't append "for sale" prices */
         iflags.suppress_price++;
 
@@ -5371,7 +5371,7 @@ display_minventory(
 
         iflags.suppress_price--;
         /* was 'set_uasmon();' but that potentially has side-effects */
-        gy.youmonst.data = &mons[u.umonnum]; /* basic part of set_uasmon() */
+        u.umonst->data = &mons[u.umonnum]; /* basic part of set_uasmon() */
     } else {
         invdisp_nothing(title ? title : tmp, "(none)");
         n = 0;
diff --git a/src/light.c b/src/light.c
index 93f7ea50a..640ed312a 100644
--- a/src/light.c
+++ b/src/light.c
@@ -13,8 +13,8 @@
  * Light sources are "things" that have a physical position and range.
  * They have a type, which gives us information about them.  Currently
  * they are only attached to objects and monsters.  Note well:  the
- * polymorphed-player handling assumes that gy.youmonst.m_id will
- * always remain 1 and gy.youmonst.mx will always remain 0.
+ * polymorphed-player handling assumes that u.umonst->m_id will
+ * always remain 1 and u.umonst->mx will always remain 0.
  *
  * Light sources, like timers, either follow game play (RANGE_GLOBAL) or
  * stay on a level (RANGE_LEVEL).  Light sources are unique by their
@@ -378,7 +378,7 @@ find_mid(unsigned nid, unsigned fmflags)
     struct monst *mtmp;
 
     if ((fmflags & FM_YOU) && nid == 1)
-        return &gy.youmonst;
+        return u.umonst;
     if (fmflags & FM_FMON)
         for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
             if (!DEADMONSTER(mtmp) && mtmp->m_id == nid)
@@ -399,7 +399,7 @@ whereis_mon(struct monst *mon, unsigned fmflags)
 {
     struct monst *mtmp;
 
-    if ((fmflags & FM_YOU) && mon == &gy.youmonst)
+    if ((fmflags & FM_YOU) && mon == u.umonst)
         return FM_YOU;
     if (fmflags & FM_FMON)
         for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
@@ -957,7 +957,7 @@ wiz_light_sources(void)
                        : ls->type == LS_MONSTER
                           ? (mon_is_local(ls->id.a_monst)
                              ? "mon"
-                             : (ls->id.a_monst == &gy.youmonst)
+                             : (ls->id.a_monst == u.umonst)
                                 ? "you"
                                 /* migrating monster */
                                 : "<m>")
diff --git a/src/lock.c b/src/lock.c
index 2e8851754..cc3183d00 100644
--- a/src/lock.c
+++ b/src/lock.c
@@ -89,7 +89,7 @@ picklock(void)
         }
     }
 
-    if (gx.xlock.usedtime++ >= 50 || nohands(gy.youmonst.data)) {
+    if (gx.xlock.usedtime++ >= 50 || nohands(u.umonst->data)) {
         You("give up your attempt at %s.", lock_action());
         exercise(A_DEX, TRUE); /* even if you don't succeed */
         return ((gx.xlock.usedtime = 0));
@@ -218,7 +218,7 @@ forcelock(void)
     if ((gx.xlock.box->ox != u.ux) || (gx.xlock.box->oy != u.uy))
         return ((gx.xlock.usedtime = 0)); /* you or it moved */
 
-    if (gx.xlock.usedtime++ >= 50 || !uwep || nohands(gy.youmonst.data)) {
+    if (gx.xlock.usedtime++ >= 50 || !uwep || nohands(u.umonst->data)) {
         You("give up your attempt to force the lock.");
         if (gx.xlock.usedtime >= 50) /* you made the effort */
             exercise((gx.xlock.picktyp) ? A_DEX : A_STR, TRUE);
@@ -315,7 +315,7 @@ autokey(boolean opening) /* True: key, pick, or card; False: key or pick */
         } else {
             switch (o->otyp) {
             case SKELETON_KEY:
-                if (!key || is_magic_key(&gy.youmonst, o))
+                if (!key || is_magic_key(u.umonst, o))
                     key = o;
                 break;
             case LOCK_PICK:
@@ -380,7 +380,7 @@ pick_lock(
     if (gx.xlock.usedtime && picktyp == gx.xlock.picktyp) {
         static char no_longer[] = "Unfortunately, you can no longer %s %s.";
 
-        if (nohands(gy.youmonst.data)) {
+        if (nohands(u.umonst->data)) {
             const char *what = (picktyp == LOCK_PICK) ? "pick" : "key";
 
             if (picktyp == CREDIT_CARD)
@@ -396,13 +396,13 @@ pick_lock(
             const char *action = lock_action();
 
             You("resume your attempt at %s.", action);
-            gx.xlock.magic_key = is_magic_key(&gy.youmonst, pick);
+            gx.xlock.magic_key = is_magic_key(u.umonst, pick);
             set_occupation(picklock, action, 0);
             return PICKLOCK_DID_SOMETHING;
         }
     }
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You_cant("hold %s -- you have no hands!", doname(pick));
         return PICKLOCK_DID_NOTHING;
     } else if (u.uswallow) {
@@ -513,7 +513,7 @@ pick_lock(
                              an(simple_typename(picktyp)));
                     return PICKLOCK_LEARNED_SOMETHING;
                 } else if (autounlock
-                           && !touch_artifact(pick, &gy.youmonst)) {
+                           && !touch_artifact(pick, u.umonst)) {
                     /* note: for !autounlock, apply already did touch check */
                     return PICKLOCK_DID_SOMETHING;
                 }
@@ -626,7 +626,7 @@ pick_lock(
                 return PICKLOCK_DID_NOTHING;
 
             /* note: for !autounlock, 'apply' already did touch check */
-            if (autounlock && !touch_artifact(pick, &gy.youmonst))
+            if (autounlock && !touch_artifact(pick, u.umonst))
                 return PICKLOCK_DID_SOMETHING;
 
             switch (picktyp) {
@@ -649,7 +649,7 @@ pick_lock(
     svc.context.move = 0;
     gx.xlock.chance = ch;
     gx.xlock.picktyp = picktyp;
-    gx.xlock.magic_key = is_magic_key(&gy.youmonst, pick);
+    gx.xlock.magic_key = is_magic_key(u.umonst, pick);
     gx.xlock.usedtime = 0;
     set_occupation(picklock, lock_action(), 0);
     return PICKLOCK_DID_SOMETHING;
@@ -785,7 +785,7 @@ doopen_indir(coordxy x, coordxy y)
     const char *dirprompt;
     int res = ECMD_OK;
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You_cant("open anything -- you have no hands!");
         return ECMD_OK;
     }
@@ -895,7 +895,7 @@ doopen_indir(coordxy x, coordxy y)
         return res;
     }
 
-    if (verysmall(gy.youmonst.data)) {
+    if (verysmall(u.umonst->data)) {
         pline("You're too small to pull the door open.");
         return res;
     }
@@ -961,7 +961,7 @@ doclose(void)
     boolean portcullis;
     int res = ECMD_OK;
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You_cant("close anything -- you have no hands!");
         return ECMD_OK;
     }
@@ -1031,7 +1031,7 @@ doclose(void)
     }
 
     if (door->doormask == D_ISOPEN) {
-        if (verysmall(gy.youmonst.data) && !u.usteed) {
+        if (verysmall(u.umonst->data) && !u.usteed) {
             pline("You're too small to push the door closed.");
             return res;
         }
@@ -1281,7 +1281,7 @@ chest_shatter_msg(struct obj *otmp)
 
     if (otmp->oclass == POTION_CLASS) {
         You("%s %s shatter!", Blind ? "hear" : "see", an(bottlename()));
-        if (!breathless(gy.youmonst.data) || haseyes(gy.youmonst.data))
+        if (!breathless(u.umonst->data) || haseyes(u.umonst->data))
             potionbreathe(otmp);
         return;
     }
diff --git a/src/mcastu.c b/src/mcastu.c
index 34d839906..c6f5bc3bb 100644
--- a/src/mcastu.c
+++ b/src/mcastu.c
@@ -69,7 +69,7 @@ cursetxt(struct monst *mtmp, boolean undirected)
             point_msg = "all around, then curses";
         else if ((Invis && !perceives(mtmp->data)
                   && (mtmp->mux != u.ux || mtmp->muy != u.uy))
-                 || is_obj_mappear(&gy.youmonst, STRANGE_OBJECT)
+                 || is_obj_mappear(u.umonst, STRANGE_OBJECT)
                  || u.uundetected)
             point_msg = "and curses in your general direction";
         else if (Displaced && (mtmp->mux != u.ux || mtmp->muy != u.uy))
@@ -389,7 +389,7 @@ staticfn void
 mcast_death_touch(struct monst *mtmp)
 {
     pline("Oh no, %s's using the touch of death!", mhe(mtmp));
-    if (nonliving(gy.youmonst.data) || is_demon(gy.youmonst.data)) {
+        if (nonliving(u.umonst->data) || is_demon(u.umonst->data)) {
         You("seem no deader than before.");
     } else if (!Antimagic && rn2(mtmp->m_lev) > 12) {
         if (Hallucination) {
@@ -553,9 +553,9 @@ mcast_fire_pillar(struct monst *mtmp, int dmg)
     if (Half_spell_damage)
         dmg = (dmg + 1) / 2;
     burn_away_slime();
-    (void) burnarmor(&gy.youmonst);
+        (void) burnarmor(u.umonst);
     /* item destruction dmg */
-    (void) destroy_items(&gy.youmonst, AD_FIRE, orig_dmg);
+        (void) destroy_items(u.umonst, AD_FIRE, orig_dmg);
     ignite_items(gi.invent);
     /* burn up flammable items on the floor, melt ice terrain */
     mon_spell_hits_spot(mtmp, AD_FIRE, u.ux, u.uy);
@@ -586,7 +586,7 @@ mcast_lightning(struct monst *mtmp, int dmg)
     }
     if (Half_spell_damage)
         dmg = (dmg + 1) / 2;
-    (void) destroy_items(&gy.youmonst, AD_ELEC, orig_dmg);
+        (void) destroy_items(u.umonst, AD_ELEC, orig_dmg);
     /* lightning might destroy iron bars if hero is on such a spot;
        reflection protects terrain here [execution won't get here due
        to 'if (reflects) break' above] but hero resistance doesn't;
@@ -730,7 +730,7 @@ mcast_blind_you(void)
 {
     /* note: resists_blnd() doesn't apply here */
     if (!Blinded) {
-        int num_eyes = eyecount(gy.youmonst.data);
+            int num_eyes = eyecount(u.umonst->data);
 
         pline("Scales cover your %s!", (num_eyes == 1)
                                        ? body_part(EYE)
diff --git a/src/mhitm.c b/src/mhitm.c
index 5e8bb928e..c6db44600 100644
--- a/src/mhitm.c
+++ b/src/mhitm.c
@@ -607,7 +607,7 @@ failed_grab(
         && (mattk->aatyp == AT_HUGS || mattk->adtyp == AD_WRAP
             || mattk->adtyp == AD_STCK  || mattk->adtyp == AD_DGST)) {
         if ((gv.vis && canspotmon(mdef)) /* mon-vs-mon */
-            || magr == &gy.youmonst || mdef == &gy.youmonst) {
+            || magr == u.umonst || mdef == u.umonst) {
             char magrnam[BUFSZ], mdefnam[BUFSZ];
             boolean tailmiss = gn.notonhead;
             const char *verb = (mattk->adtyp == AD_DGST) ? "gulp"
@@ -618,14 +618,14 @@ failed_grab(
                mon_nam(x_monnam) calls s_suffix() for named ghosts and
                s_suffix() uses a single static buffer; make copies of both
                names to overcome that [note: comment predates 'tailmiss'] */
-            Strcpy(magrnam, (magr == &gy.youmonst) ? "Your"
+            Strcpy(magrnam, (magr == u.umonst) ? "Your"
                                                    : s_suffix(Monnam(magr)));
             if (!tailmiss) {
-                Strcpy(mdefnam, (mdef == &gy.youmonst) ? "you"
+                Strcpy(mdefnam, (mdef == u.umonst) ? "you"
                                                        : mon_nam(mdef));
             } else {
                 /* hero poly'd into long worm can't grow tail
-                   so no 'youmonst' handling is needed here */
+                   so no 'u.umonst' handling is needed here */
                 Sprintf(mdefnam, "%s tail", s_suffix(some_mon_nam(mdef)));
             }
             /* unsolid grab misses are actually somewhat iffy--how come
@@ -808,8 +808,8 @@ engulf_target(struct monst *magr, struct monst *mdef)
 {
     struct rm *lev;
     int ax, ay, dx, dy;
-    boolean uatk = (magr == &gy.youmonst),
-            udef = (mdef == &gy.youmonst);
+    boolean uatk = (magr == u.umonst),
+            udef = (mdef == u.umonst);
 
     /* can't swallow something that's too big */
     if (mdef->data->msize >= MZ_HUGE
@@ -825,16 +825,16 @@ engulf_target(struct monst *magr, struct monst *mdef)
        might not be able to place attacker and defender both back on map;
        when defender is the hero, a sanity_check complaint about placing
        the hero on top of a monster can occur */
-    dx = (mdef == &gy.youmonst) ? u.ux : mdef->mx;
-    dy = (mdef == &gy.youmonst) ? u.uy : mdef->my;
+    dx = (mdef == u.umonst) ? u.ux : mdef->mx;
+    dy = (mdef == u.umonst) ? u.uy : mdef->my;
     lev = &levl[dx][dy];
     if (!(udef ? Passes_walls : passes_walls(mdef->data))
           && (IS_OBSTRUCTED(lev->typ) || closed_door(dx, dy) || IS_TREE(lev->typ)
               /* not passes_bars(); engulfer isn't squeezing through */
               || (lev->typ == IRONBARS && !is_whirly(magr->data))))
         return FALSE;
-    ax = (magr == &gy.youmonst) ? u.ux : magr->mx;
-    ay = (magr == &gy.youmonst) ? u.uy : magr->my;
+    ax = (magr == u.umonst) ? u.ux : magr->mx;
+    ay = (magr == u.umonst) ? u.uy : magr->my;
     lev = &levl[ax][ay];
     if (!(uatk ? Passes_walls : passes_walls(magr->data))
         && (IS_OBSTRUCTED(lev->typ) || closed_door(ax, ay) || IS_TREE(lev->typ)
@@ -1124,7 +1124,7 @@ mon_poly(struct monst *magr, struct monst *mdef, int dmg)
     static const char freaky[] = " undergoes a freakish metamorphosis";
     struct permonst *oldform = mdef->data;
 
-    if (mdef == &gy.youmonst) {
+    if (mdef == u.umonst) {
         if (Antimagic) {
             shieldeff(u.ux, u.uy);
         } else if (Unchanging) {
@@ -1166,7 +1166,7 @@ mon_poly(struct monst *magr, struct monst *mdef, int dmg)
             mdef->mhp -= dmg;
             dmg = 0;
             if (DEADMONSTER(mdef)) {
-                if (magr == &gy.youmonst)
+                if (magr == u.umonst)
                     xkilled(mdef, XKILL_GIVEMSG | XKILL_NOCORPSE);
                 else
                     monkilled(mdef, "", AD_RBRE);
@@ -1182,13 +1182,13 @@ mon_poly(struct monst *magr, struct monst *mdef, int dmg)
                           x_monnam(mdef, ARTICLE_A, (char *) 0,
                                    (SUPPRESS_NAME | SUPPRESS_IT
                                     | SUPPRESS_INVISIBLE), FALSE));
-                else if (was_seen || magr == &gy.youmonst)
+                else if (was_seen || magr == u.umonst)
                     pline("%s%s%s.", Before, freaky,
                           !was_seen ? "" : " and disappears");
             }
             dmg = 0;
             if (can_teleport(magr->data)) {
-                if (magr == &gy.youmonst)
+                if (magr == u.umonst)
                     tele();
                 else if (!tele_restrict(magr))
                     (void) rloc(magr, RLOC_MSG);
@@ -1200,7 +1200,7 @@ mon_poly(struct monst *magr, struct monst *mdef, int dmg)
     }
     /* when a transformation has happened, can't attack again for poly
        effect during next turn or two; not enforced for poly'd hero */
-    if (mdef->data != oldform && magr != &gy.youmonst)
+    if (mdef->data != oldform && magr != u.umonst)
         magr->mspec_used += rnd(2);
 
     return dmg;
@@ -1250,7 +1250,7 @@ void
 slept_monst(struct monst *mon)
 {
     if (helpless(mon) && mon == u.ustuck
-        && !sticks(gy.youmonst.data) && !u.uswallow) {
+        && !sticks(u.umonst->data) && !u.uswallow) {
         pline_mon(mon, "%s grip relaxes.", s_suffix(Monnam(mon)));
         unstuck(mon);
     }
diff --git a/src/mhitu.c b/src/mhitu.c
index 71d90a8ec..b71104cb9 100644
--- a/src/mhitu.c
+++ b/src/mhitu.c
@@ -34,7 +34,7 @@ hitmsg(struct monst *mtmp, struct attack *mattk)
 
     /* Note: if opposite gender, "seductively";
        if same gender, "engagingly" for nymph, normal msg for others. */
-    if ((compat = could_seduce(mtmp, &gy.youmonst, mattk)) != 0
+    if ((compat = could_seduce(mtmp, u.umonst, mattk)) != 0
         && !mtmp->mcan && !mtmp->mspec_used) {
         pline_mon(mtmp, "%s %s you %s.", Monst_name,
               !Blind ? "smiles at" : !Deaf ? "talks to" : "touches",
@@ -45,7 +45,7 @@ hitmsg(struct monst *mtmp, struct attack *mattk)
             verb = "bites";
             break;
         case AT_KICK:
-            if (thick_skinned(gy.youmonst.data))
+            if (thick_skinned(u.umonst->data))
                 punct = ".";
             verb = "kicks";
             break;
@@ -90,7 +90,7 @@ missmu(struct monst *mtmp, boolean nearmiss, struct attack *mattk)
     if (!canspotmon(mtmp))
         map_invisible(mtmp->mx, mtmp->my);
 
-    if (could_seduce(mtmp, &gy.youmonst, mattk) && !mtmp->mcan)
+    if (could_seduce(mtmp, u.umonst, mattk) && !mtmp->mcan)
         pline_mon(mtmp, "%s pretends to be friendly.", Monnam(mtmp));
     else
         pline_mon(mtmp, "%s %smisses!", Monnam(mtmp),
@@ -147,7 +147,7 @@ mpoisons_subj(
     struct attack *mattk)
 {
     if (mattk->aatyp == AT_WEAP) {
-        struct obj *mwep = (mtmp == &gy.youmonst) ? uwep : MON_WEP(mtmp);
+        struct obj *mwep = (mtmp == u.umonst) ? uwep : MON_WEP(mtmp);
         /* "Foo's attack was poisoned." is pretty lame, but at least
            it's better than "sting" when not a stinging attack... */
         return (!mwep || !mwep->opoisoned) ? "attack" : "weapon";
@@ -200,7 +200,7 @@ wildmiss(struct monst *mtmp, struct attack *mattk)
     /* maybe it's attacking an image around the corner? */
 
     compat = ((mattk->adtyp == AD_SEDU || mattk->adtyp == AD_SSEX)
-              ? could_seduce(mtmp, &gy.youmonst, mattk) : 0);
+              ? could_seduce(mtmp, u.umonst, mattk) : 0);
     Monst_name = Monnam(mtmp);
 
     set_msg_xy(mtmp->mx, mtmp->my);
@@ -314,8 +314,8 @@ getmattk(
 {
     struct permonst *mptr = magr->data;
     struct attack *attk = &mptr->mattk[indx];
-    struct obj *weap = (magr == &gy.youmonst) ? uwep : MON_WEP(magr);
-    boolean udefend = mdef == &gy.youmonst;
+    struct obj *weap = (magr == u.umonst) ? uwep : MON_WEP(magr);
+    boolean udefend = mdef == u.umonst;
 
     /* honor SEDUCE=0 */
     if (!SYSOPT_SEDUCE) {
@@ -396,7 +396,7 @@ getmattk(
        if weapon is sufficiently interesting; a few unique creatures
        have two weapon attacks where one does physical damage and other
        doesn't--avoid forcing physical damage for those */
-    } else if (indx == 0 && magr != &gy.youmonst
+    } else if (indx == 0 && magr != u.umonst
                && attk->aatyp == AT_WEAP && attk->adtyp != AD_PHYS
                && !(mptr->mattk[1].aatyp == AT_WEAP
                     && mptr->mattk[1].adtyp == AD_PHYS)
@@ -468,7 +468,7 @@ mtrapped_in_pit(struct monst *mtmp)
 {
     struct trap *ttmp = 0;
 
-    if (mtmp == &gy.youmonst)
+    if (mtmp == u.umonst)
         ttmp = (u.utrap && u.utraptype == TT_PIT) ? t_at(u.ux, u.uy) : 0;
     else
         ttmp = mtmp->mtrapped ? t_at(mtmp->mx, mtmp->my) : 0;
@@ -552,7 +552,7 @@ mattacku(struct monst *mtmp)
         if (!canspotmon(mtmp))
             map_invisible(mtmp->mx, mtmp->my);
         u.uundetected = 0;
-        if (is_hider(gy.youmonst.data) && u.umonnum != PM_TRAPPER) {
+        if (is_hider(u.umonst->data) && u.umonnum != PM_TRAPPER) {
             /* ceiling hider */
             coord cc; /* maybe we need a unexto() function? */
             struct obj *obj;
@@ -562,7 +562,7 @@ mattacku(struct monst *mtmp)
                is eligible for placing hero; we assume that a
                removed monster remembers its old spot <mx,my> */
             remove_monster(mtmp->mx, mtmp->my);
-            if (!enexto(&cc, u.ux, u.uy, gy.youmonst.data)
+            if (!enexto(&cc, u.ux, u.uy, u.umonst->data)
                 /* a fish won't voluntarily swap positions
                    when it's in water and hero is over land */
                 || (mtmp->data->mlet == S_EEL
@@ -587,13 +587,13 @@ mattacku(struct monst *mtmp)
                 /* tail hasn't grown, so if it now occupies <cc.x,.y>
                    then one of its original spots must be free */
                 if (m_at(cc.x, cc.y))
-                    (void) enexto(&cc, u.ux, u.uy, gy.youmonst.data);
+                    (void) enexto(&cc, u.ux, u.uy, u.umonst->data);
             }
             teleds(cc.x, cc.y, TELEDS_ALLOW_DRAG); /* move hero */
             set_apparxy(mtmp);
             newsym(u.ux, u.uy);
 
-            if (gy.youmonst.data->mlet != S_PIERCER)
+            if (u.umonst->data->mlet != S_PIERCER)
                 return 0; /* lurkers don't attack */
 
             obj = which_armor(mtmp, WORN_HELMET);
@@ -625,7 +625,7 @@ mattacku(struct monst *mtmp)
                 struct obj *obj = svl.level.objects[u.ux][u.uy];
 
                 if (obj || u.umonnum == PM_TRAPPER
-                    || (gy.youmonst.data->mlet == S_EEL
+                    || (u.umonst->data->mlet == S_EEL
                         && is_pool(u.ux, u.uy))) {
                     int save_spe = 0; /* suppress warning */
 
@@ -636,17 +636,17 @@ mattacku(struct monst *mtmp)
                     }
                     /* note that m_monnam() overrides hallucination, which is
                        what we want when message is from mtmp's perspective */
-                    if (gy.youmonst.data->mlet == S_EEL
+                    if (u.umonst->data->mlet == S_EEL
                         || u.umonnum == PM_TRAPPER)
                         pline(
                              "Wait, %s!  There's a hidden %s named %s there!",
                               m_monnam(mtmp),
-                              pmname(gy.youmonst.data, Ugender), svp.plname);
+                              pmname(u.umonst->data, Ugender), svp.plname);
                     else
                         pline(
                           "Wait, %s!  There's a %s named %s hiding under %s!",
                               m_monnam(mtmp),
-                              pmname(gy.youmonst.data, Ugender),
+                              pmname(u.umonst->data, Ugender),
                               svp.plname,
                               doname(svl.level.objects[u.ux][u.uy]));
                     if (obj)
@@ -660,9 +660,9 @@ mattacku(struct monst *mtmp)
     }
 
     /* hero might be a mimic, concealed via #monster */
-    if (gy.youmonst.data->mlet == S_MIMIC && U_AP_TYPE && !range2
+    if (u.umonst->data->mlet == S_MIMIC && U_AP_TYPE && !range2
         && foundyou && !u.uswallow) {
-        boolean sticky = sticks(gy.youmonst.data);
+        boolean sticky = sticks(u.umonst->data);
 
         if (!canspotmon(mtmp))
             map_invisible(mtmp->mx, mtmp->my);
@@ -670,11 +670,11 @@ mattacku(struct monst *mtmp)
             pline("It gets stuck on you.");
         else /* see note about m_monnam() above */
             pline("Wait, %s!  That's a %s named %s!", m_monnam(mtmp),
-                  pmname(gy.youmonst.data, Ugender), svp.plname);
+                  pmname(u.umonst->data, Ugender), svp.plname);
         if (sticky)
             set_ustuck(mtmp);
-        gy.youmonst.m_ap_type = M_AP_NOTHING;
-        gy.youmonst.mappearance = 0;
+        u.umonst->m_ap_type = M_AP_NOTHING;
+        u.umonst->mappearance = 0;
         newsym(u.ux, u.uy);
         return 0;
     }
@@ -686,18 +686,18 @@ mattacku(struct monst *mtmp)
         if (!youseeit)
             pline("%s %s!", Something,
                   (likes_gold(mtmp->data)
-                   && gy.youmonst.mappearance == GOLD_PIECE)
+                   && u.umonst->mappearance == GOLD_PIECE)
                   ? "tries to pick you up"
                   : "disturbs you");
         else /* see note about m_monnam() above */
             pline("Wait, %s!  That %s is really %s named %s!", m_monnam(mtmp),
-                  mimic_obj_name(&gy.youmonst),
+                  mimic_obj_name(u.umonst),
                   an(pmname(&mons[u.umonnum], Ugender)), svp.plname);
         if (gm.multi < 0) { /* this should always be the case */
             char buf[BUFSZ];
 
             Sprintf(buf, "You appear to be %s again.",
-                    Upolyd ? (const char *) an(pmname(gy.youmonst.data,
+                    Upolyd ? (const char *) an(pmname(u.umonst->data,
                                                       flags.female))
                            : (const char *) "yourself");
             unmul(buf); /* immediately stop mimicking */
@@ -783,7 +783,7 @@ mattacku(struct monst *mtmp)
                 continue;
         }
         mon_currwep = (struct obj *) 0;
-        mattk = getmattk(mtmp, &gy.youmonst, i, sum, &alt_attk);
+        mattk = getmattk(mtmp, u.umonst, i, sum, &alt_attk);
         if ((u.uswallow && mattk->aatyp != AT_ENGL)
             || (skipnonmagc && mattk->aatyp != AT_MAGC)
             || (gs.skipdrin && mattk->aatyp == AT_TENT
@@ -801,14 +801,14 @@ mattacku(struct monst *mtmp)
             if (mattk->aatyp == AT_KICK && mtrapped_in_pit(mtmp))
                 continue;
             if (!range2 && (!MON_WEP(mtmp) || mtmp->mconf || Conflict
-                            || !touch_petrifies(gy.youmonst.data))) {
+                            || !touch_petrifies(u.umonst->data))) {
                 if (foundyou) {
                     if (tmp > (j = rnd(20 + i))) {
-                        if (unsolid(gy.youmonst.data)
-                            && failed_grab(mtmp, &gy.youmonst, mattk))
+                        if (unsolid(u.umonst->data)
+                            && failed_grab(mtmp, u.umonst, mattk))
                             continue;
                         if (mattk->aatyp != AT_KICK
-                            || !thick_skinned(gy.youmonst.data))
+                            || !thick_skinned(u.umonst->data))
                             sum[i] = hitmu(mtmp, mattk);
                     } else
                         missmu(mtmp, (tmp == j), mattk);
@@ -824,7 +824,7 @@ mattacku(struct monst *mtmp)
             /* Note: if displaced, prev attacks never succeeded */
             if ((!range2 && i >= 2 && sum[i - 1] && sum[i - 2])
                 || mtmp == u.ustuck) {
-                if (!failed_grab(mtmp, &gy.youmonst, mattk))
+                if (!failed_grab(mtmp, u.umonst, mattk))
                     sum[i] = hitmu(mtmp, mattk);
             }
             break;
@@ -905,7 +905,7 @@ mattacku(struct monst *mtmp)
                                                    ART_SNICKERSNEE)
                                         && m_next2u(mtmp));
 
-                        hittmp = hitval(mon_currwep, &gy.youmonst);
+                        hittmp = hitval(mon_currwep, u.umonst);
                         tmp += hittmp;
                         mswings(mtmp, mon_currwep, bash);
                     }
@@ -1091,7 +1091,7 @@ magic_negation(struct monst *mon)
     struct obj *o;
     long wearmask;
     int armpro, mc = 0;
-    boolean is_you = (mon == &gy.youmonst),
+    boolean is_you = (mon == u.umonst),
             via_amul = FALSE,
             gotprot = is_you ? (EProtection != 0L)
                              /* high priests have innate protection */
@@ -1144,7 +1144,7 @@ staticfn int
 hitmu(struct monst *mtmp, struct attack *mattk)
 {
     struct permonst *mdat = mtmp->data;
-    struct permonst *olduasmon = gy.youmonst.data;
+    struct permonst *olduasmon = u.umonst->data;
     int res;
     struct mhitm_data mhm;
     mhm.hitflags = M_ATTK_MISS;
@@ -1188,9 +1188,9 @@ hitmu(struct monst *mtmp, struct attack *mattk)
     if ((is_undead(mdat) || is_vampshifter(mtmp)) && midnight())
         mhm.damage += d((int) mattk->damn, (int) mattk->damd); /* extra dmg */
 
-    mhitm_adtyping(mtmp, mattk, &gy.youmonst, &mhm);
+    mhitm_adtyping(mtmp, mattk, u.umonst, &mhm);
 
-    (void) mhitm_knockback(mtmp, &gy.youmonst, mattk, &mhm.hitflags,
+    (void) mhitm_knockback(mtmp, u.umonst, mattk, &mhm.hitflags,
                            (MON_WEP(mtmp) != 0));
 
     if (mhm.done)
@@ -1240,8 +1240,8 @@ hitmu(struct monst *mtmp, struct attack *mattk)
 
             if (Upolyd) {
                 hpmax_p = &u.mhmax;
-                /* [can't use gy.youmonst.m_lev] */
-                lowerlimit = min((int) gy.youmonst.data->mlevel, u.ulevel);
+                /* [can't use u.umonst->m_lev] */
+                lowerlimit = min((int) u.umonst->data->mlevel, u.ulevel);
             } else {
                 hpmax_p = &u.uhpmax;
                 lowerlimit = minuhpmax(1);
@@ -1276,7 +1276,7 @@ gulp_blnd_check(void)
 
     if (!Blinded && u.uswallow
         && (mattk = attacktype_fordmg(u.ustuck->data, AT_ENGL, AD_BLND))
-        && can_blnd(u.ustuck, &gy.youmonst, mattk->aatyp, (struct obj *) 0)) {
+        && can_blnd(u.ustuck, u.umonst, mattk->aatyp, (struct obj *) 0)) {
         ++u.uswldtim; /* compensate for gulpmu change */
         (void) gulpmu(u.ustuck, mattk);
         return TRUE;
@@ -1298,11 +1298,11 @@ gulpmu(struct monst *mtmp, struct attack *mattk)
     if (!u.uswallow) { /* swallows you */
         int omx = mtmp->mx, omy = mtmp->my;
 
-        if (!engulf_target(mtmp, &gy.youmonst))
+        if (!engulf_target(mtmp, u.umonst))
             return M_ATTK_MISS;
         if ((t && is_pit(t->ttyp)) && sobj_at(BOULDER, u.ux, u.uy))
             return M_ATTK_MISS;
-        if (failed_grab(mtmp, &gy.youmonst, mattk))
+        if (failed_grab(mtmp, u.umonst, mattk))
             return M_ATTK_MISS;
 
         if (Punished)
@@ -1354,7 +1354,7 @@ gulpmu(struct monst *mtmp, struct attack *mattk)
             unleash_all();
         }
 
-        if (touch_petrifies(gy.youmonst.data) && !resists_ston(mtmp)) {
+        if (touch_petrifies(u.umonst->data) && !resists_ston(mtmp)) {
             /* put the attacker back where it started;
                the resulting statue will end up there
                [note: if poly'd hero could ride or non-poly'd hero could
@@ -1438,13 +1438,13 @@ gulpmu(struct monst *mtmp, struct attack *mattk)
         physical_damage = TRUE;
         if (mtmp->data == &mons[PM_FOG_CLOUD]) {
             You("are laden with moisture and %s",
-                flaming(gy.youmonst.data)
+                flaming(u.umonst->data)
                     ? "are smoldering out!"
                     : Breathless ? "find it mildly uncomfortable."
-                                 : amphibious(gy.youmonst.data)
+                                 : amphibious(u.umonst->data)
                                        ? "feel comforted."
                                        : "can barely breathe!");
-            if ((Amphibious || Breathless) && !flaming(gy.youmonst.data))
+            if ((Amphibious || Breathless) && !flaming(u.umonst->data))
                 tmp = 0;
         } else {
             You("are %s!", enfolds(mtmp->data) ? "being squashed"
@@ -1469,7 +1469,7 @@ gulpmu(struct monst *mtmp, struct attack *mattk)
         }
         break;
     case AD_BLND:
-        if (can_blnd(mtmp, &gy.youmonst, mattk->aatyp, (struct obj *) 0)) {
+        if (can_blnd(mtmp, u.umonst, mattk->aatyp, (struct obj *) 0)) {
             if (!Blind) {
                 long was_blinded = Blinded;
 
@@ -1564,13 +1564,13 @@ gulpmu(struct monst *mtmp, struct attack *mattk)
 
     if (!u.uswallow) {
         ; /* life-saving has already expelled swallowed hero */
-    } else if (touch_petrifies(gy.youmonst.data) && !resists_ston(mtmp)) {
+    } else if (touch_petrifies(u.umonst->data) && !resists_ston(mtmp)) {
         pline("%s very hurriedly %s you!", Monnam(mtmp),
               digests(mtmp->data) ? "regurgitates"
               : enfolds(mtmp->data) ? "releases"
                 : "expels");
         expels(mtmp, mtmp->data, FALSE);
-    } else if (!u.uswldtim || gy.youmonst.data->msize >= MZ_HUGE) {
+    } else if (!u.uswldtim || u.umonst->data->msize >= MZ_HUGE) {
         /* As of 3.6.2: u.uswldtim used to be set to 0 by life-saving but it
            expels now so the !u.uswldtim case is no longer possible;
            however, polymorphing into a huge form while already
@@ -1621,7 +1621,7 @@ explmu(
             kill_agr = FALSE; /* lifesaving? */
         break;
     case AD_BLND:
-        not_affected = resists_blnd(&gy.youmonst);
+        not_affected = resists_blnd(u.umonst);
         if (ufound && !not_affected) {
             /* sometimes you're affected even if it's invisible */
             if (mon_visible(mtmp) || (rnd(tmp /= 2) > u.ulevel)) {
@@ -1636,7 +1636,7 @@ explmu(
     case AD_HALU:
         not_affected |= Blind || (u.umonnum == PM_BLACK_LIGHT
                                   || u.umonnum == PM_VIOLET_FUNGUS
-                                  || dmgtype(gy.youmonst.data, AD_STUN));
+                                  || dmgtype(u.umonst->data, AD_STUN));
         if (ufound && !not_affected) {
             boolean chg;
             if (!Hallucination)
@@ -1748,7 +1748,7 @@ gazemu(struct monst *mtmp, struct attack *mattk)
             && !Stone_resistance && !Unaware) {
             You("meet %s gaze.", s_suffix(mon_nam(mtmp)));
             stop_occupation();
-            if (poly_when_stoned(gy.youmonst.data) && polymon(PM_STONE_GOLEM))
+            if (poly_when_stoned(u.umonst->data) && polymon(PM_STONE_GOLEM))
                 break;
             urgent_pline("You turn to stone...");
             svk.killer.format = KILLED_BY;
@@ -1791,7 +1791,7 @@ gazemu(struct monst *mtmp, struct attack *mattk)
         }
         break;
     case AD_BLND:
-        if (canseemon(mtmp) && !resists_blnd(&gy.youmonst)
+        if (canseemon(mtmp) && !resists_blnd(u.umonst)
             && mdistu(mtmp) <= BOLT_LIM * BOLT_LIM) {
             if (cancelled) {
                 react = rn1(2, 2); /* "puzzled" || "dazzled" */
@@ -1842,9 +1842,9 @@ gazemu(struct monst *mtmp, struct attack *mattk)
                 }
                 burn_away_slime();
                 if (lev > rn2(20))
-                    (void) burnarmor(&gy.youmonst);
+                    (void) burnarmor(u.umonst);
                 if (lev > rn2(20)) {
-                    (void) destroy_items(&gy.youmonst, AD_FIRE, orig_dmg);
+                    (void) destroy_items(u.umonst, AD_FIRE, orig_dmg);
                     ignite_items(gi.invent);
                 }
                 if (dmg)
@@ -1943,8 +1943,8 @@ could_seduce(
 
     if (is_animal(magr->data))
         return 0;
-    if (magr == &gy.youmonst) {
-        pagr = gy.youmonst.data;
+    if (magr == u.umonst) {
+        pagr = u.umonst->data;
         agrinvis = (Invis != 0);
         genagr = poly_gender();
     } else {
@@ -1952,7 +1952,7 @@ could_seduce(
         agrinvis = magr->minvis;
         genagr = gender(magr);
     }
-    if (mdef == &gy.youmonst) {
+    if (mdef == u.umonst) {
         defperc = (See_invisible != 0);
         gendef = poly_gender();
     } else {
@@ -2202,7 +2202,7 @@ doseduce(struct monst *mon)
             disp.botl = TRUE;
             break;
         case 3:
-            if (!resists_drli(&gy.youmonst)) {
+            if (!resists_drli(u.umonst)) {
                 You_feel("out of shape.");
                 losexp("overexertion");
             } else {
@@ -2541,7 +2541,7 @@ passiveum(
                     && (perceives(mtmp->data) || !Invis)) {
                     if (Blind) {
                         pline("As a blind %s, you cannot defend yourself.",
-                              pmname(gy.youmonst.data,
+                              pmname(u.umonst->data,
                                      flags.female ? FEMALE : MALE));
                     } else {
                         if (mon_reflects(mtmp,
@@ -2571,8 +2571,8 @@ passiveum(
             u.mh += (tmp + rn2(2)) / 2;
             if (u.mhmax < u.mh)
                 u.mhmax = u.mh;
-            if (u.mhmax > (((int) gy.youmonst.data->mlevel + 1) * 8))
-                (void) split_mon(&gy.youmonst, mtmp);
+            if (u.mhmax > (((int) u.umonst->data->mlevel + 1) * 8))
+                (void) split_mon(u.umonst, mtmp);
             break;
         case AD_STUN: /* Yellow mold */
             if (!mtmp->mstun) {
@@ -2617,20 +2617,20 @@ struct monst *
 cloneu(void)
 {
     struct monst *mon;
-    int mndx = monsndx(gy.youmonst.data);
+    int mndx = monsndx(u.umonst->data);
 
     if (u.mh <= 1)
         return (struct monst *) 0;
     if (svm.mvitals[mndx].mvflags & G_EXTINCT)
         return (struct monst *) 0;
-    mon = makemon(gy.youmonst.data, u.ux, u.uy,
+    mon = makemon(u.umonst->data, u.ux, u.uy,
                   NO_MINVENT | MM_EDOG | MM_NOMSG);
     if (!mon)
         return NULL;
     mon->mcloned = 1;
     mon = christen_monst(mon, svp.plname);
     initedog(mon, TRUE);
-    mon->m_lev = gy.youmonst.data->mlevel;
+    mon->m_lev = u.umonst->data->mlevel;
     mon->mhpmax = u.mhmax;
     mon->mhp = u.mh / 2;
     u.mh -= mon->mhp;
diff --git a/src/minion.c b/src/minion.c
index 96f9ffe1c..833e5597f 100644
--- a/src/minion.c
+++ b/src/minion.c
@@ -296,7 +296,7 @@ demon_talk(struct monst *mtmp)
         }
         newsym(mtmp->mx, mtmp->my);
     }
-    if (gy.youmonst.data->mlet == S_DEMON) { /* Won't blackmail their own. */
+    if (u.umonst->data->mlet == S_DEMON) { /* Won't blackmail their own. */
         if (!Deaf)
             pline("%s says, \"Good hunting, %s.\"", Amonnam(mtmp),
                   flags.female ? "Sister" : "Brother");
diff --git a/src/mon.c b/src/mon.c
index 789ca8276..2452813e4 100644
--- a/src/mon.c
+++ b/src/mon.c
@@ -330,7 +330,7 @@ int
 m_poisongas_ok(struct monst *mtmp)
 {
     int px, py;
-    boolean is_you = (mtmp == &gy.youmonst);
+    boolean is_you = (mtmp == u.umonst);
 
     /* Non living, non breathing, immune monsters are not concerned */
     if (nonliving(mtmp->data) || is_vampshifter(mtmp)
@@ -2104,8 +2104,8 @@ mon_allowflags(struct monst *mtmp)
     if (passes_bars(mtmp->data)
         /* restrict engulfer or holder who might try to pass iron bars while
            carrying hero; accept small subset for poly'd hero passes_bars() */
-        && (mtmp != u.ustuck || (unsolid(gy.youmonst.data)
-                                 || verysmall(gy.youmonst.data))))
+        && (mtmp != u.ustuck || (unsolid(u.umonst->data)
+                                 || verysmall(u.umonst->data))))
         allowflags |= ALLOW_BARS;
 #if 0   /* can't do this here; leave it for mfndpos() */
     if (is_displacer(mtmp->data))
@@ -3209,7 +3209,7 @@ corpse_chance(
             if (was_swallowed && magr) {
                 /* mdef is a gas spore (AT_BOOM) that is exploding inside an
                    engulfer; suppress usual explosion since it's contained */
-                if (magr == &gy.youmonst) {
+                if (magr == u.umonst) {
                     There("is an explosion in your %s!", body_part(STOMACH));
                     Sprintf(svk.killer.name, "%s explosion",
                             s_suffix(pmname(mdat, Mgender(mon))));
@@ -3617,7 +3617,7 @@ xkilled(
         /* corpse--none if hero was inside the monster */
         if (!wasinside && corpse_chance(mtmp, (struct monst *) 0, FALSE)) {
             gz.zombify = (!gt.thrownobj && !gs.stoned && !uwep
-                         && zombie_maker(&gy.youmonst)
+                         && zombie_maker(u.umonst)
                          && zombie_form(mtmp->data) != NON_PM);
             cadaver = make_corpse(mtmp, burycorpse ? CORPSTAT_BURIED
                                                    : CORPSTAT_NONE);
@@ -4595,7 +4595,7 @@ get_iter_mons_xy(
 int
 healmon(struct monst *mtmp, int amt, int overheal)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         int oldhp = Upolyd ? u.mh : u.uhp;
         healup(amt, 0, 0, 0);
         return (Upolyd ? u.mh : u.uhp) - oldhp;
@@ -4704,7 +4704,7 @@ maybe_unhide_at(coordxy x, coordxy y)
         undetected = mtmp->mundetected;
         trapped = mtmp->mtrapped;
     } else if (u_at(x, y)) {
-        mtmp = &gy.youmonst;
+        mtmp = u.umonst;
         undetected = u.uundetected;
         trapped = u.utrap;
     } else {
@@ -4730,7 +4730,7 @@ hideunder(struct monst *mtmp)
     const char *seenmon = (char *) 0, *seenobj = (char *) 0,
                *locomo = (char *) 0;
     int seeit = gi.in_mklev ? 0 : canseemon(mtmp);
-    boolean oldundetctd, undetected = FALSE, is_u = (mtmp == &gy.youmonst);
+    boolean oldundetctd, undetected = FALSE, is_u = (mtmp == u.umonst);
     coordxy x = is_u ? u.ux : mtmp->mx, y = is_u ? u.uy : mtmp->my;
 
     if (mtmp == u.ustuck) {
@@ -5437,7 +5437,7 @@ newcham(
                 /* update swallow glyphs for new monster */
                 swallowed(0);
             }
-        } else if ((!sticks(mdat) && !sticks(gy.youmonst.data))
+        } else if ((!sticks(mdat) && !sticks(u.umonst->data))
                    /* sticky hero can't continue to hold mtmp if it has
                       turned into a non-solid creature; we don't use
                       uunstick() for that because its message would be
@@ -5800,7 +5800,7 @@ usmellmon(struct permonst *mdat)
     boolean msg_given = FALSE;
 
     if (mdat) {
-        if (!olfaction(gy.youmonst.data))
+        if (!olfaction(u.umonst->data))
             return FALSE;
         mndx = monsndx(mdat);
         switch (mndx) {
@@ -5895,7 +5895,7 @@ usmellmon(struct permonst *mdat)
                 msg_given = TRUE;
                 break;
             case S_ORC:
-                if (maybe_polyd(is_orc(gy.youmonst.data), Race_if(PM_ORC)))
+                if (maybe_polyd(is_orc(u.umonst->data), Race_if(PM_ORC)))
                     You("notice an attractive smell.");
                 else
                     pline("A foul stench makes you feel a little nauseated.");
diff --git a/src/mondata.c b/src/mondata.c
index d7ea80245..2e6d049a2 100644
--- a/src/mondata.c
+++ b/src/mondata.c
@@ -13,7 +13,7 @@ void
 set_mon_data(struct monst *mon, struct permonst *ptr)
 {
     int new_speed, old_speed = mon->data ? mon->data->mmove : 0;
-    short *movement_p = (mon == &gy.youmonst) ? &u.umovement : &mon->movement;
+    short *movement_p = (mon == u.umonst) ? &u.umovement : &mon->movement;
 
     mon->data = ptr;
     mon->mnum = (short) monsndx(ptr);
@@ -85,14 +85,14 @@ poly_when_stoned(struct permonst *ptr)
     /* allow G_EXTINCT */
 }
 
-/* is 'mon' (possibly youmonst) protected against damage type 'adtype' via
+/* is 'mon' (possibly u.umonst) protected against damage type 'adtype' via
    wielded weapon or worn dragon scales? [or by virtue of being a dragon?] */
 boolean
 defended(struct monst *mon, int adtyp)
 {
     struct obj *o, otemp;
     int mndx;
-    boolean is_you = (mon == &gy.youmonst);
+    boolean is_you = (mon == u.umonst);
 
     /* is 'mon' wielding an artifact that protects against 'adtyp'? */
     o = is_you ? uwep : MON_WEP(mon);
@@ -130,7 +130,7 @@ Resists_Elem(struct monst *mon, int propindx)
 {
     struct obj *o;
     long slotmask;
-    boolean is_you = (mon == &gy.youmonst);
+    boolean is_you = (mon == u.umonst);
     int u_resist = 0, damgtype = 0, rsstmask = 0;
 
     /*
@@ -204,7 +204,7 @@ resists_drli(struct monst *mon)
 
     if (is_undead(ptr) || is_demon(ptr) || is_were(ptr)
         /* is_were() doesn't handle hero in human form */
-        || (mon == &gy.youmonst && u.ulycn >= LOW_PM)
+        || (mon == u.umonst && u.ulycn >= LOW_PM)
         || ptr == &mons[PM_DEATH] || is_vampshifter(mon))
         return TRUE;
     return defended(mon, AD_DRLI);
@@ -215,7 +215,7 @@ boolean
 resists_magm(struct monst *mon)
 {
     struct permonst *ptr = mon->data;
-    boolean is_you = (mon == &gy.youmonst);
+    boolean is_you = (mon == u.umonst);
     long slotmask;
     struct obj *o;
 
@@ -248,7 +248,7 @@ boolean
 resists_blnd(struct monst *mon)
 {
     struct permonst *ptr = mon->data;
-    boolean is_you = (mon == &gy.youmonst);
+    boolean is_you = (mon == u.umonst);
 
     if (is_you ? (Blind || Unaware)
                : (mon->mblinded || !mon->mcansee || !haseyes(ptr)
@@ -278,7 +278,7 @@ boolean
 resists_blnd_by_arti(struct monst *mon)
 {
     struct obj *o;
-    boolean is_you = (mon == &gy.youmonst);
+    boolean is_you = (mon == u.umonst);
 
     o = is_you ? uwep : MON_WEP(mon);
     if (o && o->oartifact && defends(AD_BLND, o))
@@ -308,7 +308,7 @@ can_blnd(
     uchar aatyp,
     struct obj *obj) /* aatyp == AT_WEAP, AT_SPIT */
 {
-    boolean is_you = (mdef == &gy.youmonst);
+    boolean is_you = (mdef == u.umonst);
     boolean check_visor = FALSE;
     struct obj *o;
 
@@ -354,7 +354,7 @@ can_blnd(
             return TRUE; /* no defense */
         } else
             return FALSE; /* other objects cannot cause blindness yet */
-        if ((magr == &gy.youmonst) && u.uswallow)
+        if ((magr == u.umonst) && u.uswallow)
             return FALSE; /* can't affect eyes while inside monster */
         break;
 
@@ -369,7 +369,7 @@ can_blnd(
         /* e.g. raven: all ublindf, including LENSES, protect */
         if (is_you && ublindf)
             return FALSE;
-        if ((magr == &gy.youmonst) && u.uswallow)
+        if ((magr == u.umonst) && u.uswallow)
             return FALSE; /* can't affect eyes while inside monster */
         check_visor = TRUE;
         break;
@@ -387,7 +387,7 @@ can_blnd(
 
     /* check if wearing a visor (only checked if visor might help) */
     if (check_visor) {
-        o = (mdef == &gy.youmonst) ? gi.invent : mdef->minvent;
+        o = (mdef == u.umonst) ? gi.invent : mdef->minvent;
         for (; o; o = o->nobj)
             if ((o->owornmask & W_ARMH)
                 && objdescr_is(o, "visored helmet"))
@@ -570,7 +570,7 @@ can_blow(struct monst *mtmp)
         && (breathless(mtmp->data) || verysmall(mtmp->data)
             || !has_head(mtmp->data) || mtmp->data->mlet == S_EEL))
         return FALSE;
-    if ((mtmp == &gy.youmonst) && Strangled)
+    if ((mtmp == u.umonst) && Strangled)
         return FALSE;
     return TRUE;
 }
@@ -579,7 +579,7 @@ can_blow(struct monst *mtmp)
 boolean
 can_chant(struct monst *mtmp)
 {
-    if ((mtmp == &gy.youmonst && Strangled)
+    if ((mtmp == u.umonst && Strangled)
         || is_silent(mtmp->data) || !has_head(mtmp->data)
         || mtmp->data->msound == MS_BUZZ || mtmp->data->msound == MS_BURBLE)
         return FALSE;
@@ -602,10 +602,10 @@ can_be_strangled(struct monst *mon)
        are non-breathing creatures which have higher brain function. */
     if (!has_head(mon->data))
         return FALSE;
-    if (mon == &gy.youmonst) {
+    if (mon == u.umonst) {
         /* hero can't be mindless but poly'ing into mindless form can
            confer strangulation protection */
-        nobrainer = mindless(gy.youmonst.data);
+        nobrainer = mindless(u.umonst->data);
         nonbreathing = Breathless;
     } else {
         nobrainer = mindless(mon->data);
@@ -1358,7 +1358,7 @@ big_little_match(int montyp1, int montyp2)
 const struct permonst *
 raceptr(struct monst *mtmp)
 {
-    if (mtmp == &gy.youmonst && !Upolyd)
+    if (mtmp == u.umonst && !Upolyd)
         return &mons[gu.urace.mnum];
     return mtmp->data;
 }
diff --git a/src/monmove.c b/src/monmove.c
index 6489d19d4..fe3040da3 100644
--- a/src/monmove.c
+++ b/src/monmove.c
@@ -364,7 +364,7 @@ release_hero(struct monst *mon)
     if (mon == u.ustuck) {
         if (u.uswallow) {
             expels(mon, mon->data, TRUE);
-        } else if (!sticks(gy.youmonst.data)) {
+        } else if (!sticks(u.umonst->data)) {
             unstuck(mon); /* let go */
             You("get released!");
         }
@@ -608,8 +608,8 @@ mind_blast(struct monst *mtmp)
                         /* hero has no way to hide as monster but
                             check for that theoretical case anyway */
                         && U_AP_TYPE != M_AP_MONSTER) {
-                gy.youmonst.m_ap_type = M_AP_NOTHING;
-                gy.youmonst.mappearance = 0;
+                u.umonst->m_ap_type = M_AP_NOTHING;
+                u.umonst->mappearance = 0;
                 newsym(u.ux, u.uy);
             }
             pline("It locks on to your %s!",
@@ -649,7 +649,7 @@ mind_blast(struct monst *mtmp)
 void
 m_everyturn_effect(struct monst *mtmp)
 {
-    boolean is_u = (mtmp == &gy.youmonst) ? TRUE : FALSE;
+    boolean is_u = (mtmp == u.umonst) ? TRUE : FALSE;
     coordxy x = is_u ? u.ux : mtmp->mx,
             y = is_u ? u.uy : mtmp->my;
 
@@ -671,7 +671,7 @@ m_everyturn_effect(struct monst *mtmp)
 void
 m_postmove_effect(struct monst *mtmp)
 {
-    boolean is_u = (mtmp == &gy.youmonst) ? TRUE : FALSE;
+    boolean is_u = (mtmp == u.umonst) ? TRUE : FALSE;
     coordxy x = is_u ? u.ux0 : mtmp->mx,
             y = is_u ? u.uy0 : mtmp->my;
 
@@ -806,7 +806,7 @@ dochug(struct monst *mtmp)
             pline("%s whispers at thin air.",
                   cansee(mtmp->mux, mtmp->muy) ? Monnam(mtmp) : "It");
 
-            if (is_demon(gy.youmonst.data)) {
+            if (is_demon(u.umonst->data)) {
                 /* "Good hunting, brother" */
                 if (!tele_restrict(mtmp))
                     (void) rloc(mtmp, RLOC_MSG);
@@ -1052,7 +1052,7 @@ mon_would_consume_item(struct monst *mtmp, struct obj *otmp)
 boolean
 itsstuck(struct monst *mtmp)
 {
-    if (sticks(gy.youmonst.data) && mtmp == u.ustuck && !u.uswallow) {
+    if (sticks(u.umonst->data) && mtmp == u.ustuck && !u.uswallow) {
         pline_mon(mtmp, "%s cannot escape from you!", Monnam(mtmp));
         return TRUE;
     }
@@ -1862,8 +1862,8 @@ m_move(struct monst *mtmp, int after)
 
         if (!mtmp->mcansee
             || (should_see && Invis && !perceives(ptr) && rn2(11))
-            || is_obj_mappear(&gy.youmonst, STRANGE_OBJECT) || u.uundetected
-            || (is_obj_mappear(&gy.youmonst, GOLD_PIECE) && !likes_gold(ptr))
+            || is_obj_mappear(u.umonst, STRANGE_OBJECT) || u.uundetected
+            || (is_obj_mappear(u.umonst, GOLD_PIECE) && !likes_gold(ptr))
             || (mtmp->mpeaceful && !mtmp->isshk) /* allow shks to follow */
             || ((monsndx(ptr) == PM_STALKER || ptr->mlet == S_BAT
                  || ptr->mlet == S_LIGHT) && !rn2(3)))
@@ -1889,7 +1889,7 @@ m_move(struct monst *mtmp, int after)
     if ((!mtmp->mpeaceful || !rn2(10)) && (!Is_rogue_level(&u.uz))) {
         boolean in_line = (lined_up(mtmp)
              && (distmin(mtmp->mx, mtmp->my, mtmp->mux, mtmp->muy)
-                 <= (throws_rocks(gy.youmonst.data) ? 20
+                 <= (throws_rocks(u.umonst->data) ? 20
                                                     : (ACURRSTR / 2 + 1))));
 
         if (appr != 1 || !in_line) {
@@ -2318,7 +2318,7 @@ stuff_prevents_passage(struct monst *mtmp)
 {
     struct obj *chain, *obj;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         chain = gi.invent;
     } else {
         chain = mtmp->minvent;
diff --git a/src/mthrowu.c b/src/mthrowu.c
index 6f8ed721c..850abac8a 100644
--- a/src/mthrowu.c
+++ b/src/mthrowu.c
@@ -124,7 +124,7 @@ thitu(
             pline("It doesn't seem to hurt you.");
             monstseesu(M_SEEN_ACID);
         } else if (obj && stone_missile(obj)
-                   && passes_rocks(gy.youmonst.data)) {
+                   && passes_rocks(u.umonst->data)) {
             /* use 'named' as an approximation for "hitting from above";
                we avoid "passes through you" for horizontal flight path
                because missile stops and that wording would suggest that
@@ -134,7 +134,7 @@ thitu(
         } else if (obj && obj->oclass == POTION_CLASS) {
             /* an explosion which scatters objects might hit hero with one
                (potions deliberately thrown at hero are handled by m_throw) */
-            potionhit(&gy.youmonst, obj, POTHIT_OTHER_THROW);
+            potionhit(u.umonst, obj, POTHIT_OTHER_THROW);
             *objp = obj = 0; /* potionhit() uses up the potion */
         } else {
             if (obj && objects[obj->otyp].oc_material == SILVER
@@ -184,7 +184,7 @@ drop_throw(
             if (!(broken = flooreffects(obj, x, y, "fall"))) {
                 place_object(obj, x, y);
                 if (!mtmp && u_at(x, y))
-                    mtmp = &gy.youmonst;
+                    mtmp = u.umonst;
                 if (mtmp && ohit)
                     passive_obj(mtmp, obj, (struct attack *) 0);
                 stackobj(obj);
@@ -508,7 +508,7 @@ ucatchgem(
     struct monst *mon)
 {
     /* won't catch rock or gray stone; catch (then drop) worthless glass */
-    if (gem->otyp <= LAST_GLASS_GEM && is_unicorn(gy.youmonst.data)) {
+    if (gem->otyp <= LAST_GLASS_GEM && is_unicorn(u.umonst->data)) {
         char *gem_xname = xname(gem),
              *mon_s_name = s_suffix(mon_nam(mon));
 
@@ -537,7 +537,7 @@ u_catch_thrown_obj(struct obj *otmp)
 
     if (!Blind && !Confusion && !Stunned && !Fumbling
         && otmp->oclass != VENOM_CLASS
-        && !nohands(gy.youmonst.data) && freehand()
+        && !nohands(u.umonst->data) && freehand()
         && calc_capacity(otmp->owt) <= SLT_ENCUMBER && !rn2(catch_chance)) {
         char buf[BUFSZ];
 
@@ -696,7 +696,7 @@ m_throw(
                 break;
 
             if (singleobj->oclass == POTION_CLASS) {
-                potionhit(&gy.youmonst, singleobj, POTHIT_MONST_THROW);
+                potionhit(u.umonst, singleobj, POTHIT_MONST_THROW);
                 break;
             }
             oldumort = u.umortality;
@@ -719,7 +719,7 @@ m_throw(
                 {
                     int dam, hitv;
 
-                    dam = dmgval(singleobj, &gy.youmonst);
+                    dam = dmgval(singleobj, u.umonst);
                     hitv = 3 - distmin(u.ux, u.uy, mon->mx, mon->my);
                     if (hitv < -4)
                         hitv = -4;
@@ -732,7 +732,7 @@ m_throw(
                         if (singleobj->otyp == ELVEN_ARROW)
                             dam++;
                     }
-                    if (bigmonst(gy.youmonst.data))
+                    if (bigmonst(u.umonst->data))
                         hitv++;
                     hitv += 8 + singleobj->spe;
                     if (dam < 1)
@@ -752,7 +752,7 @@ m_throw(
                             poison is limited to attrib loss */
                          (u.umortality > oldumort) ? 0 : 10, TRUE);
             }
-            if (hitu && can_blnd((struct monst *) 0, &gy.youmonst,
+            if (hitu && can_blnd((struct monst *) 0, u.umonst,
                                  (uchar) ((singleobj->otyp == BLINDING_VENOM)
                                              ? AT_SPIT
                                              : AT_WEAP),
@@ -767,7 +767,7 @@ m_throw(
                 } else if (singleobj->otyp == BLINDING_VENOM) {
                     const char *eyes = body_part(EYE);
 
-                    if (eyecount(gy.youmonst.data) != 1)
+                    if (eyecount(u.umonst->data) != 1)
                         eyes = makeplural(eyes);
                     /* venom in the eyes */
                     if (!Blind)
@@ -778,7 +778,7 @@ m_throw(
             }
             if (hitu && singleobj->otyp == EGG) {
                 if (!Stoned && !Stone_resistance
-                    && !(poly_when_stoned(gy.youmonst.data)
+                    && !(poly_when_stoned(u.umonst->data)
                          && polymon(PM_STONE_GOLEM))) {
                     make_stoned(5L, (char *) 0, KILLED_BY, "");
                 }
@@ -1030,7 +1030,7 @@ spitmm(struct monst *mtmp, struct attack *mattk, struct monst *mtarg)
         return M_ATTK_MISS;
     }
     if (m_lined_up(mtarg, mtmp)) {
-        boolean utarg = (mtarg == &gy.youmonst);
+        boolean utarg = (mtarg == u.umonst);
         coordxy tx = utarg ? mtmp->mux : mtarg->mx;
         coordxy ty = utarg ? mtmp->muy : mtarg->my;
 
@@ -1093,7 +1093,7 @@ int
 breamm(struct monst *mtmp, struct attack *mattk, struct monst *mtarg)
 {
     int typ = get_atkdam_type(mattk->adtyp);
-    boolean utarget = (mtarg == &gy.youmonst);
+    boolean utarget = (mtarg == u.umonst);
 
     if (m_lined_up(mtarg, mtmp)) {
         if (mtmp->mcan) {
@@ -1225,11 +1225,11 @@ thrwmu(struct monst *mtmp)
                   obj_is_pname(otmp) ? the(onm) : an(onm));
         }
 
-        dam = dmgval(otmp, &gy.youmonst);
+        dam = dmgval(otmp, u.umonst);
         hitv = 3 - distmin(u.ux, u.uy, mtmp->mx, mtmp->my);
         if (hitv < -4)
             hitv = -4;
-        if (bigmonst(gy.youmonst.data))
+        if (bigmonst(u.umonst->data))
             hitv++;
         hitv += 8 + otmp->spe;
         if (dam < 1)
@@ -1267,14 +1267,14 @@ thrwmu(struct monst *mtmp)
 int
 spitmu(struct monst *mtmp, struct attack *mattk)
 {
-    return spitmm(mtmp, mattk, &gy.youmonst);
+    return spitmm(mtmp, mattk, u.umonst);
 }
 
 /* monster breathes at you (ranged) */
 int
 breamu(struct monst *mtmp, struct attack *mattk)
 {
-    return breamm(mtmp, mattk, &gy.youmonst);
+    return breamm(mtmp, mattk, u.umonst);
 }
 
 /* return TRUE if terrain at x,y blocks linedup checks */
@@ -1375,7 +1375,7 @@ linedup(
 staticfn int
 m_lined_up(struct monst *mtarg, struct monst *mtmp)
 {
-    boolean utarget = (mtarg == &gy.youmonst);
+    boolean utarget = (mtarg == u.umonst);
     coordxy tx = utarget ? mtmp->mux : mtarg->mx;
     coordxy ty = utarget ? mtmp->muy : mtarg->my;
     boolean ignore_boulders = utarget && (throws_rocks(mtmp->data)
@@ -1397,7 +1397,7 @@ m_lined_up(struct monst *mtarg, struct monst *mtmp)
 boolean
 lined_up(struct monst *mtmp)
 {
-    return m_lined_up(&gy.youmonst, mtmp) ? TRUE : FALSE;
+    return m_lined_up(u.umonst, mtmp) ? TRUE : FALSE;
 }
 
 /* check if a monster is carrying an item of a particular type */
@@ -1406,7 +1406,7 @@ m_carrying(struct monst *mtmp, int type)
 {
     struct obj *otmp;
 
-    for (otmp = (mtmp == &gy.youmonst) ? gi.invent : mtmp->minvent; otmp;
+    for (otmp = (mtmp == u.umonst) ? gi.invent : mtmp->minvent; otmp;
          otmp = otmp->nobj)
         if (otmp->otyp == type)
             break;
diff --git a/src/muse.c b/src/muse.c
index 78b61c10b..07cc865da 100644
--- a/src/muse.c
+++ b/src/muse.c
@@ -252,7 +252,7 @@ mreadmsg(struct monst *mtmp, struct obj *otmp)
         pline_mon(mtmp, "%s reads %s!", Monnam(mtmp), onambuf);
     } else { /* !Deaf, otherwise we wouldn't reach here */
         char blindbuf[BUFSZ];
-        boolean similar = same_race(gy.youmonst.data, mtmp->data),
+        boolean similar = same_race(u.umonst->data, mtmp->data),
                 uniqmon = ((mtmp->data->geno & G_UNIQ) != 0
                            /* shopkeepers aren't unique monsters but since
                               they have distinct names, treat them as such */
@@ -1565,8 +1565,8 @@ find_offensive(struct monst *mtmp)
         }
         nomore(MUSE_CAMERA);
         if (obj->otyp == EXPENSIVE_CAMERA
-            && ((!Blind && !resists_blnd(&gy.youmonst))
-                || hates_light(gy.youmonst.data))
+            && ((!Blind && !resists_blnd(u.umonst))
+                || hates_light(u.umonst->data))
             && dist2(mtmp->mx, mtmp->my, mtmp->mux, mtmp->muy) <= 2
             && obj->spe > 0 && !rn2(6)) {
             gm.m.offensive = obj;
@@ -1598,7 +1598,7 @@ mbhitm(struct monst *mtmp, struct obj *otmp)
 {
     int tmp;
     boolean reveal_invis = FALSE, learnit = FALSE,
-            hits_you = (mtmp == &gy.youmonst);
+            hits_you = (mtmp == u.umonst);
 
     if (!hits_you && otmp->otyp != WAN_UNDEAD_TURNING) {
         mtmp->msleeping = 0;
@@ -1761,7 +1761,7 @@ mbhit(
             break;
         }
         if (u_at(gb.bhitpos.x, gb.bhitpos.y)) {
-            (*fhitm)(&gy.youmonst, obj);
+            (*fhitm)(u.umonst, obj);
             range -= 3;
         } else if ((mtmp = m_at(gb.bhitpos.x, gb.bhitpos.y)) != 0) {
             if (cansee(gb.bhitpos.x, gb.bhitpos.y) && !canspotmon(mtmp))
@@ -1944,7 +1944,7 @@ use_offensive(struct monst *mtmp)
                   Monnam(mtmp), an(xname(otmp)));
         }
         gm.m_using = TRUE;
-        if (!Blind && !resists_blnd(&gy.youmonst)) {
+        if (!Blind && !resists_blnd(u.umonst)) {
             You("are blinded by the flash of light!");
             make_blinded(BlindedTimeout + (long) rnd(1 + 50), FALSE);
         }
@@ -2857,7 +2857,7 @@ ureflects(const char *fmt, const char *str)
         if (fmt && str)
             pline(fmt, str, uskin ? "luster" : "armor");
         return TRUE;
-    } else if (gy.youmonst.data == &mons[PM_SILVER_DRAGON]) {
+    } else if (u.umonst->data == &mons[PM_SILVER_DRAGON]) {
         if (fmt && str)
             pline(fmt, str, "scales");
         return TRUE;
diff --git a/src/music.c b/src/music.c
index 21614860d..7034577a5 100644
--- a/src/music.c
+++ b/src/music.c
@@ -165,7 +165,7 @@ awaken_soldiers(struct monst *bugler  /* monster that played instrument */)
     int distance, distm;
 
     /* distance of affected non-soldier monsters to bugler */
-    distance = ((bugler == &gy.youmonst) ? u.ulevel
+    distance = ((bugler == u.umonst) ? u.ulevel
                                          : bugler->data->mlevel) * 30;
 
     for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {
@@ -182,7 +182,7 @@ awaken_soldiers(struct monst *bugler  /* monster that played instrument */)
             else if (!Deaf)
                 Norep("%s the rattle of battle gear being readied.",
                       "You hear");  /* Deaf-aware */
-        } else if ((distm = ((bugler == &gy.youmonst)
+        } else if ((distm = ((bugler == u.umonst)
                                  ? mdistu(mtmp)
                                  : dist2(bugler->mx, bugler->my, mtmp->mx,
                                          mtmp->my))) < distance) {
@@ -301,7 +301,7 @@ do_pit(coordxy x, coordxy y, unsigned tu_pit)
             Your("chain breaks!");
             reset_utrap(TRUE);
         }
-        if (Levitation || Flying || is_clinger(gy.youmonst.data)) {
+        if (Levitation || Flying || is_clinger(u.umonst->data)) {
             if (!tu_pit) { /* no pit here previously */
                 pline("A chasm opens up under you!");
                 You("don't fall in!");
@@ -327,8 +327,8 @@ do_pit(coordxy x, coordxy y, unsigned tu_pit)
             if (keepfooting)
                 exercise(A_DEX, TRUE);
             else
-                selftouch((Upolyd && (slithy(gy.youmonst.data)
-                                    || nolimbs(gy.youmonst.data)))
+                selftouch((Upolyd && (slithy(u.umonst->data)
+                                    || nolimbs(u.umonst->data)))
                           ? "Shaken, you"
                           : "Falling down, you");
         }
@@ -653,7 +653,7 @@ do_improvisation(struct obj *instr)
         else
             You("blow into the bugle.");
         Hero_playnotes(obj_to_instr(&itmp), improvisation, 80);
-        awaken_soldiers(&gy.youmonst);
+        awaken_soldiers(u.umonst);
         exercise(A_WIS, FALSE);
         break;
     case MAGIC_HARP: /* Charm monsters */
@@ -769,7 +769,7 @@ do_play_instrument(struct obj *instr)
     } else if ((instr->otyp == WOODEN_FLUTE || instr->otyp == MAGIC_FLUTE
                 || instr->otyp == TOOLED_HORN || instr->otyp == FROST_HORN
                 || instr->otyp == FIRE_HORN || instr->otyp == BUGLE)
-               && !can_blow(&gy.youmonst)) {
+               && !can_blow(u.umonst)) {
         You("are incapable of playing %s.", thesimpleoname(instr));
         return ECMD_OK;
     }
diff --git a/src/pager.c b/src/pager.c
index 82b8bc7eb..ac8b5f61e 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -121,7 +121,7 @@ self_lookat(char *outbuf)
         Sprintf(eos(outbuf), ", mounted on %s", y_monnam(u.usteed));
     if (u.uundetected || (Upolyd && U_AP_TYPE)
         || visible_region_at(u.ux, u.uy))
-        mhidden_description(&gy.youmonst,
+        mhidden_description(u.umonst,
                             MHID_PREFIX | MHID_ARTICLE | MHID_REGION,
                             eos(outbuf));
     if (Punished)
@@ -196,7 +196,7 @@ mhidden_description(
             incl_article = (mhid_flags & MHID_ARTICLE) != 0,
             show_altmon = (mhid_flags & MHID_ALTMON) != 0,
             force_region = (mhid_flags & MHID_REGION) != 0;
-    boolean fakeobj, isyou = (mon == &gy.youmonst);
+    boolean fakeobj, isyou = (mon == u.umonst);
     coordxy x = isyou ? u.ux : mon->mx, y = isyou ? u.uy : mon->my;
     int glyph = (svl.level.flags.hero_memory && !isyou) ? levl[x][y].glyph
                                                        : glyph_at(x, y);
@@ -446,7 +446,7 @@ look_at_monster(
             Strcat(buf, digests(mtmp->data) ? ", swallowing you"
                                             : ", engulfing you");
         else
-            Strcat(buf, (Upolyd && sticks(gy.youmonst.data))
+            Strcat(buf, (Upolyd && sticks(u.umonst->data))
                           ? ", being held" : ", holding you");
     }
     /* if mtmp isn't able to move (other than because it is a type of
@@ -1167,7 +1167,7 @@ add_cmap_descr(
 
         /* grab a scratch buffer we can safely return (via *firstmatch
            when applicable) */
-        mbuf = mon_nam(&gy.youmonst);
+        mbuf = mon_nam(u.umonst);
 
         if (absidx == S_pool) {
             levl[cc.x][cc.y].typ = (idx == S_pool) ? POOL : MOAT;
diff --git a/src/pickup.c b/src/pickup.c
index 331933137..5f6e55de8 100644
--- a/src/pickup.c
+++ b/src/pickup.c
@@ -287,7 +287,7 @@ fatal_corpse_mistake(struct obj *obj, boolean remotely)
     if (u_safe_from_fatal_corpse(obj, st_all) || remotely)
         return FALSE;
 
-    if (poly_when_stoned(gy.youmonst.data) && polymon(PM_STONE_GOLEM)) {
+    if (poly_when_stoned(u.umonst->data) && polymon(PM_STONE_GOLEM)) {
         display_nhwindow(WIN_MESSAGE, FALSE); /* --More-- */
         return FALSE;
     }
@@ -723,9 +723,9 @@ pickup(int what) /* should be a long */
          */
         if ((gm.multi && !svc.context.run)
             || (autopickup && !flags.pickup)
-            || notake(gy.youmonst.data)) {
+            || notake(u.umonst->data)) {
             check_here(FALSE);
-            if (notake(gy.youmonst.data) && OBJ_AT(u.ux, u.uy)
+            if (notake(u.umonst->data) && OBJ_AT(u.ux, u.uy)
                 && (autopickup || flags.pickup))
                 You("are physically incapable of picking anything up.");
             return 0;
@@ -892,8 +892,8 @@ pickup(int what) /* should be a long */
     }
 
     if (!u.uswallow) {
-        if (hides_under(gy.youmonst.data))
-            (void) hideunder(&gy.youmonst);
+        if (hides_under(u.umonst->data))
+            (void) hideunder(u.umonst);
 
         /* position may need updating (invisible hero) */
         if (n_picked)
@@ -1155,7 +1155,7 @@ query_objlist(const char *qstr,        /* query string */
         fake_hero_object = cg.zeroobj;
         fake_hero_object.quan = 1L; /* not strictly necessary... */
         any.a_obj = &fake_hero_object;
-        tmpglyph = mon_to_glyph(&gy.youmonst, rn2_on_display_rng);
+        tmpglyph = mon_to_glyph(u.umonst, rn2_on_display_rng);
         map_glyphinfo(0, 0, tmpglyph, 0U, &tmpglyphinfo);
         add_menu(win, &tmpglyphinfo, &any,
                  /* fake inventory letter, no group accelerator */
@@ -1719,7 +1719,7 @@ lift_object(
        and for boulder picked up by hero poly'd into a giant; override
        availability of open inventory slot iff not already carrying one */
     if (obj->otyp == LOADSTONE
-        || (obj->otyp == BOULDER && throws_rocks(gy.youmonst.data))) {
+        || (obj->otyp == BOULDER && throws_rocks(u.umonst->data))) {
         if (inv_cnt(FALSE) < invlet_basic || !carrying(obj->otyp)
             || merge_choice(gi.invent, obj))
             return 1; /* lift regardless of current situation */
@@ -1823,7 +1823,7 @@ pickup_object(
                && engulfing_u(obj->ocarry)) {
         You_cant("pick %s up.", ysimple_name(obj));
         return 0;
-    } else if (obj->oartifact && !touch_artifact(obj, &gy.youmonst)) {
+    } else if (obj->oartifact && !touch_artifact(obj, u.umonst)) {
         return 0;
     } else if (obj->otyp == CORPSE) {
         if (fatal_corpse_mistake(obj, telekinesis)
@@ -1983,7 +1983,7 @@ encumber_msg(void)
             break;
         case 3:
             You("%s under your heavy load.  Movement is very hard.",
-                stagger(gy.youmonst.data, "stagger"));
+                stagger(u.umonst->data, "stagger"));
             break;
         default:
             You("%s move a handspan with this load!",
@@ -2004,7 +2004,7 @@ encumber_msg(void)
             break;
         case 3:
             You("%s under your load.  Movement is still very hard.",
-                stagger(gy.youmonst.data, "stagger"));
+                stagger(u.umonst->data, "stagger"));
             break;
         }
         disp.botl = TRUE;
@@ -2051,7 +2051,7 @@ able_to_loot(
         You("cannot %s things that are deep in the %s.", verb,
             hliquid(is_lava(x, y) ? "lava" : "water"));
         return FALSE;
-    } else if (nolimbs(gy.youmonst.data)) {
+    } else if (nolimbs(u.umonst->data)) {
         pline("Without limbs, you cannot %s anything.", verb);
         return FALSE;
     } else if (looting && !freehand()) {
@@ -2189,7 +2189,7 @@ doloot_core(void)
         /* "Can't do that while carrying so much stuff." */
         return ECMD_OK;
     }
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You("have no hands!"); /* not `body_part(HAND)' */
         return ECMD_OK;
     }
@@ -2440,7 +2440,7 @@ loot_mon(struct monst *mtmp, int *passed_info, boolean *prev_loot)
                 x_monnam(mtmp, ARTICLE_THE, (char *) 0,
                          SUPPRESS_SADDLE, FALSE));
         if ((c = yn_function(qbuf, ynqchars, 'n', TRUE)) == 'y') {
-            if (nolimbs(gy.youmonst.data)) {
+            if (nolimbs(u.umonst->data)) {
                 You_cant("do that without limbs."); /* not body_part(HAND) */
                 return 0;
             }
@@ -2732,7 +2732,7 @@ out_container(struct obj *obj)
         obj->owt = weight(obj);
     }
 
-    if (obj->oartifact && !touch_artifact(obj, &gy.youmonst))
+    if (obj->oartifact && !touch_artifact(obj, u.umonst))
         return 0;
 
     if (fatal_corpse_mistake(obj, FALSE))
@@ -2936,7 +2936,7 @@ explain_container_prompt(boolean more_containers)
 boolean
 u_handsy(void)
 {
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You("have no hands!"); /* not `body_part(HAND)' */
         return FALSE;
     } else if (!freehand()) {
diff --git a/src/pline.c b/src/pline.c
index 79dd8b28b..c8d61b09d 100644
--- a/src/pline.c
+++ b/src/pline.c
@@ -139,7 +139,7 @@ pline_mon(struct monst *mtmp, const char *line, ...)
 {
     va_list the_args;
 
-    if (mtmp == &gy.youmonst)
+    if (mtmp == u.umonst)
         set_msg_xy(0, 0);
     else
         set_msg_xy(mtmp->mx, mtmp->my);
diff --git a/src/polyself.c b/src/polyself.c
index 43c76cf40..2461a1b79 100644
--- a/src/polyself.c
+++ b/src/polyself.c
@@ -5,8 +5,8 @@
 /*
  * Polymorph self routine.
  *
- * Note:  the light source handling code assumes that gy.youmonst.m_id
- * always remains 1 and gy.youmonst.mx will always remain 0 when it handles
+ * Note:  the light source handling code assumes that u.umonst->m_id
+ * always remains 1 and u.umonst->mx will always remain 0 when it handles
  * the case of the player polymorphed into a light-emitting monster.
  *
  * Transformation sequences:
@@ -33,24 +33,24 @@ staticfn void polysense(void);
 static const char no_longer_petrify_resistant[] =
     "No longer petrify-resistant, you";
 
-/* update the gy.youmonst.data structure pointer and intrinsics */
+/* update the u.umonst->data structure pointer and intrinsics */
 void
 set_uasmon(void)
 {
     struct permonst *mdat = &mons[u.umonnum];
-    boolean was_vampshifter = valid_vampshiftform(gy.youmonst.cham, u.umonnum);
+    boolean was_vampshifter = valid_vampshiftform(u.umonst->cham, u.umonnum);
 
-    set_mon_data(&gy.youmonst, mdat);
-    gy.youmonst.m_id = 1;
+    set_mon_data(u.umonst, mdat);
+    u.umonst->m_id = 1;
 
     if (Protection_from_shape_changers)
-        gy.youmonst.cham = NON_PM;
-    else if (is_vampire(gy.youmonst.data))
-        gy.youmonst.cham = gy.youmonst.mnum;
+        u.umonst->cham = NON_PM;
+    else if (is_vampire(u.umonst->data))
+        u.umonst->cham = u.umonst->mnum;
     /* assume hero-as-chameleon/doppelganger/sandestin doesn't change shape */
     else if (!was_vampshifter)
-        gy.youmonst.cham = NON_PM;
-    u.mcham = gy.youmonst.cham; /* for save/restore since youmonst isn't */
+        u.umonst->cham = NON_PM;
+    u.mcham = u.umonst->cham; /* for save/restore since u.umonst isn't */
 
 #define PROPSET(PropIndx, ON)                          \
     do {                                               \
@@ -59,7 +59,7 @@ set_uasmon(void)
         else                                           \
             u.uprops[PropIndx].intrinsic &= ~FROMFORM; \
     } while (0)
-#define resist_from_form(MRtyp) ((gy.youmonst.data->mresists & (MRtyp)) != 0)
+#define resist_from_form(MRtyp) ((u.umonst->data->mresists & (MRtyp)) != 0)
 
     PROPSET(FIRE_RES, resist_from_form(MR_FIRE));
     PROPSET(COLD_RES, resist_from_form( MR_COLD));
@@ -74,7 +74,7 @@ set_uasmon(void)
         struct obj *save_uwep = uwep;
 
         uwep = 0;
-        PROPSET(DRAIN_RES, resists_drli(&gy.youmonst));
+        PROPSET(DRAIN_RES, resists_drli(u.umonst));
         uwep = save_uwep;
     }
     /* resists_magm() takes wielded, worn, and carried equipment into
@@ -174,7 +174,7 @@ check_strangling(boolean on)
         /* when Strangled is already set, polymorphing from one
            vulnerable form into another causes the counter to be reset */
         if (uamul && uamul->otyp == AMULET_OF_STRANGULATION
-            && can_be_strangled(&gy.youmonst)) {
+            && can_be_strangled(u.umonst)) {
             Strangled = 6L;
             disp.botl = TRUE;
             Your("%s %s your %s!", simpleonames(uamul),
@@ -185,7 +185,7 @@ check_strangling(boolean on)
 
     /* off -- maybe block strangling */
     } else {
-        if (Strangled && !can_be_strangled(&gy.youmonst)) {
+        if (Strangled && !can_be_strangled(u.umonst)) {
             Strangled = 0L;
             disp.botl = TRUE;
             You("are no longer being strangled.");
@@ -199,7 +199,7 @@ DISABLE_WARNING_FORMAT_NONLITERAL
 staticfn void
 polyman(const char *fmt, const char *arg)
 {
-    boolean sticking = (sticks(gy.youmonst.data) && u.ustuck && !u.uswallow),
+    boolean sticking = (sticks(u.umonst->data) && u.ustuck && !u.uswallow),
             was_mimicking = (U_AP_TYPE != M_AP_NOTHING);
     boolean was_blind = !!Blind,
             had_see_invis = !!See_invisible;
@@ -223,8 +223,8 @@ polyman(const char *fmt, const char *arg)
     if (was_mimicking) {
         if (gm.multi < 0)
             unmul("");
-        gy.youmonst.m_ap_type = M_AP_NOTHING;
-        gy.youmonst.mappearance = 0;
+        u.umonst->m_ap_type = M_AP_NOTHING;
+        u.umonst->mappearance = 0;
     }
 
     newsym(u.ux, u.uy);
@@ -249,7 +249,7 @@ polyman(const char *fmt, const char *arg)
     if (!!See_invisible ^ had_see_invis)
         set_mimic_blocking(); /* See_invisible just toggled */
 
-    if (u.twoweap && !could_twoweap(gy.youmonst.data))
+    if (u.twoweap && !could_twoweap(u.umonst->data))
         untwoweapon();
 
     if (u.utrap && u.utraptype == TT_PIT) {
@@ -279,8 +279,8 @@ change_sex(void)
      * may be true for certain roles
      */
     if (!Upolyd
-        || (!is_male(gy.youmonst.data) && !is_female(gy.youmonst.data)
-            && !is_neuter(gy.youmonst.data)))
+        || (!is_male(u.umonst->data) && !is_female(u.umonst->data)
+            && !is_neuter(u.umonst->data)))
         flags.female = !flags.female;
     if (Upolyd) /* poly'd: also change saved sex */
         u.mfemale = !u.mfemale;
@@ -476,8 +476,8 @@ polyself(int psflags)
             formrevert = ((psflags & POLY_REVERT) != 0),
             draconian = (uarm && Is_dragon_armor(uarm)),
             iswere = (ismnum(u.ulycn)),
-            isvamp = (is_vampire(gy.youmonst.data)
-                      || is_vampshifter(&gy.youmonst)),
+            isvamp = (is_vampire(u.umonst->data)
+                      || is_vampshifter(u.umonst)),
             controllable_poly = Polymorph_control && !(Stunned || Unaware);
 
     if (Unchanging) {
@@ -494,11 +494,11 @@ polyself(int psflags)
             return;
         }
     }
-    old_light = emits_light(gy.youmonst.data);
+    old_light = emits_light(u.umonst->data);
     mntmp = NON_PM;
 
     if (formrevert) {
-        mntmp = gy.youmonst.cham;
+        mntmp = u.umonst->cham;
         monsterpoly = TRUE;
         controllable_poly = FALSE;
     }
@@ -670,13 +670,13 @@ polyself(int psflags)
         } else if (isvamp) {
  do_vampyr:
             if (mntmp < LOW_PM || (mons[mntmp].geno & G_UNIQ)) {
-                mntmp = (gy.youmonst.data == &mons[PM_VAMPIRE_LEADER]
+                mntmp = (u.umonst->data == &mons[PM_VAMPIRE_LEADER]
                          && !rn2(10)) ? PM_WOLF
                                       : !rn2(4) ? PM_FOG_CLOUD
                                                 : PM_VAMPIRE_BAT;
-                if (ismnum(gy.youmonst.cham)
-                    && !is_vampire(gy.youmonst.data) && !rn2(2))
-                    mntmp = gy.youmonst.cham;
+                if (ismnum(u.umonst->cham)
+                    && !is_vampire(u.umonst->data) && !rn2(2))
+                    mntmp = u.umonst->cham;
             }
             if (controllable_poly) {
                 Sprintf(buf, "Become %s?",
@@ -718,15 +718,15 @@ polyself(int psflags)
     gs.sex_change_ok--; /* reset */
 
  made_change:
-    new_light = emits_light(gy.youmonst.data);
+    new_light = emits_light(u.umonst->data);
     if (old_light != new_light) {
         if (old_light)
-            del_light_source(LS_MONSTER, monst_to_any(&gy.youmonst));
+            del_light_source(LS_MONSTER, monst_to_any(u.umonst));
         if (new_light == 1)
             ++new_light; /* otherwise it's undetectable */
         if (new_light)
             new_light_source(u.ux, u.uy, new_light, LS_MONSTER,
-                             monst_to_any(&gy.youmonst));
+                             monst_to_any(u.umonst));
     }
 }
 
@@ -735,9 +735,9 @@ int
 polymon(int mntmp)
 {
     char buf[BUFSZ], ustuckNam[BUFSZ];
-    boolean sticking = sticks(gy.youmonst.data) && u.ustuck && !u.uswallow,
+    boolean sticking = sticks(u.umonst->data) && u.ustuck && !u.uswallow,
             was_blind = !!Blind, dochange = FALSE, was_expelled = FALSE,
-            was_hiding_under = u.uundetected && hides_under(gy.youmonst.data);
+            was_hiding_under = u.uundetected && hides_under(u.umonst->data);
     int mlvl, newMaxStr;
 
     if (svm.mvitals[mntmp].mvflags & G_GENOD) { /* allow G_EXTINCT */
@@ -774,13 +774,13 @@ polymon(int mntmp)
 
     /* if stuck mimicking gold, stop immediately */
     if (gm.multi < 0 && U_AP_TYPE == M_AP_OBJECT
-        && gy.youmonst.data->mlet != S_MIMIC)
+        && u.umonst->data->mlet != S_MIMIC)
         unmul("");
     /* if becoming a non-mimic, stop mimicking anything */
     if (mons[mntmp].mlet != S_MIMIC) {
         /* as in polyman() */
-        gy.youmonst.m_ap_type = M_AP_NOTHING;
-        gy.youmonst.mappearance = 0;
+        u.umonst->m_ap_type = M_AP_NOTHING;
+        u.umonst->mappearance = 0;
     }
     if (is_male(&mons[mntmp])) {
         if (flags.female)
@@ -840,7 +840,7 @@ polymon(int mntmp)
         You("no longer feel sick.");
     }
     if (Slimed) {
-        if (flaming(gy.youmonst.data)) {
+        if (flaming(u.umonst->data)) {
             make_slimed(0L, "The slime burns away!");
         } else if (mntmp == PM_GREEN_SLIME) {
             /* do it silently */
@@ -848,7 +848,7 @@ polymon(int mntmp)
         }
     }
     check_strangling(FALSE); /* maybe stop strangling */
-    if (nohands(gy.youmonst.data))
+    if (nohands(u.umonst->data))
         make_glib(0);
 
     /*
@@ -857,9 +857,9 @@ polymon(int mntmp)
      * "experience level of you as a monster" for a polymorphed character.
      */
     mlvl = (int) mons[mntmp].mlevel;
-    if (gy.youmonst.data->mlet == S_DRAGON && mntmp >= PM_GRAY_DRAGON) {
+    if (u.umonst->data->mlet == S_DRAGON && mntmp >= PM_GRAY_DRAGON) {
         u.mhmax = In_endgame(&u.uz) ? (8 * mlvl) : (4 * mlvl + d(mlvl, 4));
-    } else if (is_golem(gy.youmonst.data)) {
+    } else if (is_golem(u.umonst->data)) {
         u.mhmax = golemhp(mntmp);
     } else {
         if (!mlvl)
@@ -891,7 +891,7 @@ polymon(int mntmp)
     /* if hiding under something and can't hide anymore, unhide now;
        but don't auto-hide when not already hiding-under */
     if (was_hiding_under)
-        (void) hideunder(&gy.youmonst);
+        (void) hideunder(u.umonst);
 
     if (u.utrap && u.utraptype == TT_PIT) {
         set_utrap(rn1(6, 2), TT_PIT); /* time to escape resets */
@@ -904,7 +904,7 @@ polymon(int mntmp)
 
     /* you now know what an egg of your type looks like; [moved from
        below in case expels() -> spoteffects() drops hero onto any eggs] */
-    if (lays_eggs(gy.youmonst.data)) {
+    if (lays_eggs(u.umonst->data)) {
         learn_egg_type(u.umonnum);
         /* make queen bees recognize killer bee eggs */
         learn_egg_type(egg_type_from_parent(u.umonnum, TRUE));
@@ -914,13 +914,13 @@ polymon(int mntmp)
         uchar usiz;
 
         /* if new form can't be swallowed, make engulfer expel hero */
-        if (unsolid(gy.youmonst.data)
+        if (unsolid(u.umonst->data)
             /* subset of engulf_target() */
-            || (usiz = gy.youmonst.data->msize) >= MZ_HUGE
+            || (usiz = u.umonst->data->msize) >= MZ_HUGE
             || (u.ustuck->data->msize < usiz && !is_whirly(u.ustuck->data))) {
             boolean expels_mesg = TRUE;
 
-            if (unsolid(gy.youmonst.data)) {
+            if (unsolid(u.umonst->data)) {
                 if (canspotmon(u.ustuck)) /* [see below for explanation] */
                     Strcpy(ustuckNam, Monnam(u.ustuck));
                 pline("%s can no longer contain you.", ustuckNam);
@@ -939,7 +939,7 @@ polymon(int mntmp)
                /* being held; if now capable of holding, make holder
                   release so that hero doesn't automagically start holding
                   it; or, release if no longer capable of being held */
-               && (sticks(gy.youmonst.data) || unsolid(gy.youmonst.data))) {
+               && (sticks(u.umonst->data) || unsolid(u.umonst->data))) {
         /* u.ustuck name was saved above in case we're changing from can-see
            to can't-see; but might have changed from can't-see to can-see so
            override here if hero knows who u.ustuck is */
@@ -947,7 +947,7 @@ polymon(int mntmp)
             Strcpy(ustuckNam, Monnam(u.ustuck));
         set_ustuck((struct monst *) 0);
         pline("%s loses its grip on you.", ustuckNam);
-    } else if (sticking && !sticks(gy.youmonst.data)) {
+    } else if (sticking && !sticks(u.umonst->data)) {
         /* was holding onto u.ustuck but no longer capable of that */
         uunstick();
     }
@@ -982,13 +982,13 @@ polymon(int mntmp)
             buried_ball_to_freedom();
         }
         reset_utrap(TRUE);
-    } else if (likes_lava(gy.youmonst.data) && u.utrap
+    } else if (likes_lava(u.umonst->data) && u.utrap
                && u.utraptype == TT_LAVA) {
         pline_The("%s now feels soothing.", hliquid("lava"));
         reset_utrap(TRUE);
     }
-    if (amorphous(gy.youmonst.data) || is_whirly(gy.youmonst.data)
-        || unsolid(gy.youmonst.data)) {
+    if (amorphous(u.umonst->data) || is_whirly(u.umonst->data)
+        || unsolid(u.umonst->data)) {
         if (Punished) {
             You("slip out of the iron chain.");
             unpunish();
@@ -998,16 +998,16 @@ polymon(int mntmp)
         }
     }
     if (u.utrap && (u.utraptype == TT_WEB || u.utraptype == TT_BEARTRAP)
-        && (amorphous(gy.youmonst.data) || is_whirly(gy.youmonst.data)
-            || unsolid(gy.youmonst.data)
-            || (gy.youmonst.data->msize <= MZ_SMALL
+        && (amorphous(u.umonst->data) || is_whirly(u.umonst->data)
+            || unsolid(u.umonst->data)
+            || (u.umonst->data->msize <= MZ_SMALL
                 && u.utraptype == TT_BEARTRAP))) {
         You("are no longer stuck in the %s.",
             u.utraptype == TT_WEB ? "web" : "bear trap");
         /* probably should burn webs too if PM_FIRE_ELEMENTAL */
         reset_utrap(TRUE);
     }
-    if (webmaker(gy.youmonst.data) && u.utrap && u.utraptype == TT_WEB) {
+    if (webmaker(u.umonst->data) && u.utrap && u.utraptype == TT_WEB) {
         You("orient yourself on the web.");
         reset_utrap(TRUE);
     }
@@ -1031,7 +1031,7 @@ polymon(int mntmp)
     if (flags.verbose) {
         static const char use_thec[] = "Use the command #%s to %s.";
         static const char monsterc[] = "monster";
-        struct permonst *uptr = gy.youmonst.data;
+        struct permonst *uptr = u.umonst->data;
         boolean might_hide = (is_hider(uptr) || hides_under(uptr));
 
         if (can_breathe(uptr))
@@ -1058,7 +1058,7 @@ polymon(int mntmp)
             pline(use_thec, monsterc, "emit a mental blast");
         if (uptr->msound == MS_SHRIEK) /* worthless, actually */
             pline(use_thec, monsterc, "shriek");
-        if (is_vampire(uptr) || is_vampshifter(&gy.youmonst))
+        if (is_vampire(uptr) || is_vampshifter(u.umonst))
             pline(use_thec, monsterc, "change shape");
 
         if (lays_eggs(uptr) && flags.female
@@ -1157,7 +1157,7 @@ staticfn void
 break_armor(void)
 {
     struct obj *otmp;
-    struct permonst *uptr = gy.youmonst.data;
+    struct permonst *uptr = u.umonst->data;
 
     if (breakarm(uptr)) {
         if ((otmp = uarm) != 0) {
@@ -1196,7 +1196,7 @@ break_armor(void)
             useup(uarmu);
         }
     } else if (sliparm(uptr)) {
-        if ((otmp = uarm) != 0 && racial_exception(&gy.youmonst, otmp) < 1) {
+        if ((otmp = uarm) != 0 && racial_exception(u.umonst, otmp) < 1) {
             if (donning(otmp))
                 cancel_don();
             Your("armor falls around you!");
@@ -1313,7 +1313,7 @@ drop_weapon(int alone)
          * future it might not be so if there are monsters which cannot
          * wear gloves but can wield weapons
          */
-        if (!alone || cantwield(gy.youmonst.data)) {
+        if (!alone || cantwield(u.umonst->data)) {
             candropwep = canletgo(uwep, "");
             candropswapwep = !u.twoweap || canletgo(uswapwep, "");
             if (alone) {
@@ -1355,7 +1355,7 @@ drop_weapon(int alone)
 
             if (updateinv)
                 update_inventory();
-        } else if (!could_twoweap(gy.youmonst.data)) {
+        } else if (!could_twoweap(u.umonst->data)) {
             untwoweapon();
         }
     }
@@ -1390,8 +1390,8 @@ rehumanize(void)
      * reverts to human rather than to vampire.
      */
 
-    if (emits_light(gy.youmonst.data))
-        del_light_source(LS_MONSTER, monst_to_any(&gy.youmonst));
+    if (emits_light(u.umonst->data))
+        del_light_source(LS_MONSTER, monst_to_any(u.umonst));
     polyman("You return to %s form!", gu.urace.adj);
 
     if (u.uhp < 1) {
@@ -1435,7 +1435,7 @@ dobreathe(void)
     if (!getdir((char *) 0))
         return ECMD_CANCEL;
 
-    mattk = attacktype_fordmg(gy.youmonst.data, AT_BREA, AD_ANY);
+    mattk = attacktype_fordmg(u.umonst->data, AT_BREA, AD_ANY);
     if (!mattk)
         impossible("bad breath attack?"); /* mouthwash needed... */
     else if (!u.dx && !u.dy && !u.dz)
@@ -1453,7 +1453,7 @@ dospit(void)
 
     if (!getdir((char *) 0))
         return ECMD_CANCEL;
-    mattk = attacktype_fordmg(gy.youmonst.data, AT_SPIT, AD_ANY);
+    mattk = attacktype_fordmg(u.umonst->data, AT_SPIT, AD_ANY);
     if (!mattk) {
         impossible("bad spit attack?");
     } else {
@@ -1632,7 +1632,7 @@ dosummon(void)
 
     You("call upon your brethren for help!");
     exercise(A_WIS, TRUE);
-    if (!were_summon(gy.youmonst.data, TRUE, &placeholder, (char *) 0))
+    if (!were_summon(u.umonst->data, TRUE, &placeholder, (char *) 0))
         pline("But none arrive.");
     return ECMD_TIME;
 }
@@ -1647,8 +1647,8 @@ dogaze(void)
     uchar adtyp = 0;
 
     for (i = 0; i < NATTK; i++) {
-        if (gy.youmonst.data->mattk[i].aatyp == AT_GAZE) {
-            adtyp = gy.youmonst.data->mattk[i].adtyp;
+        if (u.umonst->data->mattk[i].aatyp == AT_GAZE) {
+            adtyp = u.umonst->data->mattk[i].adtyp;
             break;
         }
     }
@@ -1775,8 +1775,8 @@ dogaze(void)
 int
 dohide(void)
 {
-    boolean ismimic = gy.youmonst.data->mlet == S_MIMIC,
-            on_ceiling = is_clinger(gy.youmonst.data) || Flying;
+    boolean ismimic = u.umonst->data->mlet == S_MIMIC,
+            on_ceiling = is_clinger(u.umonst->data) || Flying;
 
     /* can't hide while being held (or holding) or while trapped
        (except for floor hiders [trapper or mimic] in pits) */
@@ -1785,19 +1785,19 @@ dohide(void)
                  !u.ustuck ? "trapped"
                    : u.uswallow ? (digests(u.ustuck->data) ? "swallowed"
                                                            : "engulfed")
-                     : !sticks(gy.youmonst.data) ? "being held"
+                     : !sticks(u.umonst->data) ? "being held"
                        : (humanoid(u.ustuck->data) ? "holding someone"
                                                    : "holding that creature"));
         if (u.uundetected || (ismimic && U_AP_TYPE != M_AP_NOTHING)) {
             u.uundetected = 0;
-            gy.youmonst.m_ap_type = M_AP_NOTHING;
+            u.umonst->m_ap_type = M_AP_NOTHING;
             newsym(u.ux, u.uy);
         }
         return ECMD_OK;
     }
     /* note: hero-as-eel handling is incomplete but unnecessary;
        such critters aren't offered the option of hiding via #monster */
-    if (gy.youmonst.data->mlet == S_EEL && !is_pool(u.ux, u.uy)) {
+    if (u.umonst->data->mlet == S_EEL && !is_pool(u.ux, u.uy)) {
         if (IS_FOUNTAIN(levl[u.ux][u.uy].typ))
             pline_The("fountain is not deep enough to hide in.");
         else
@@ -1805,7 +1805,7 @@ dohide(void)
         u.uundetected = 0;
         return ECMD_OK;
     }
-    if (hides_under(gy.youmonst.data)) {
+    if (hides_under(u.umonst->data)) {
         long ct = 0L;
         struct obj *otmp, *otop = svl.level.objects[u.ux][u.uy];
 
@@ -1846,7 +1846,7 @@ dohide(void)
         u.uundetected = 0;
         return ECMD_OK;
     }
-    if ((is_hider(gy.youmonst.data) && !Flying) /* floor hider */
+    if ((is_hider(u.umonst->data) && !Flying) /* floor hider */
         && (Is_airlevel(&u.uz) || Is_waterlevel(&u.uz))) {
         There("is nowhere to hide beneath you.");
         u.uundetected = 0;
@@ -1863,8 +1863,8 @@ dohide(void)
 
     if (ismimic) {
         /* should bring up a dialog "what would you like to imitate?" */
-        gy.youmonst.m_ap_type = M_AP_OBJECT;
-        gy.youmonst.mappearance = STRANGE_OBJECT;
+        u.umonst->m_ap_type = M_AP_OBJECT;
+        u.umonst->mappearance = STRANGE_OBJECT;
     } else
         u.uundetected = 1;
     newsym(u.ux, u.uy);
@@ -1875,13 +1875,13 @@ dohide(void)
 int
 dopoly(void)
 {
-    struct permonst *savedat = gy.youmonst.data;
+    struct permonst *savedat = u.umonst->data;
 
-    if (is_vampire(gy.youmonst.data) || is_vampshifter(&gy.youmonst)) {
+    if (is_vampire(u.umonst->data) || is_vampshifter(u.umonst)) {
         polyself(POLY_MONSTER);
-        if (savedat != gy.youmonst.data) {
+        if (savedat != u.umonst->data) {
             You("transform into %s.",
-                an(pmname(gy.youmonst.data, Ugender)));
+                an(pmname(u.umonst->data, Ugender)));
             newsym(u.ux, u.uy);
         }
     }
@@ -2141,7 +2141,7 @@ mbodypart(struct monst *mon, int part)
 const char *
 body_part(int part)
 {
-    return mbodypart(&gy.youmonst, part);
+    return mbodypart(u.umonst, part);
 }
 
 int
@@ -2150,7 +2150,7 @@ poly_gender(void)
     /* Returns gender of polymorphed player;
      * 0/1=same meaning as flags.female, 2=none.
      */
-    if (is_neuter(gy.youmonst.data) || !humanoid(gy.youmonst.data))
+    if (is_neuter(u.umonst->data) || !humanoid(u.umonst->data))
         return 2;
     return flags.female;
 }
@@ -2275,9 +2275,9 @@ udeadinside(void)
        seems silly when you're polymorphed into something undead;
        monkilled() distinguishes between living (killed) and non (destroyed)
        for monster death message; we refine the nonliving aspect a bit */
-    return !nonliving(gy.youmonst.data)
+    return !nonliving(u.umonst->data)
              ? "dead"          /* living, including demons */
-             : !weirdnonliving(gy.youmonst.data)
+             : !weirdnonliving(u.umonst->data)
                  ? "condemned" /* undead plus manes */
                  : "empty";    /* golems plus vortices */
 }
diff --git a/src/potion.c b/src/potion.c
index d56b64155..3ac39333a 100644
--- a/src/potion.c
+++ b/src/potion.c
@@ -121,7 +121,7 @@ make_stunned(long xtime, boolean talk)
             if (u.usteed)
                 You("wobble in the saddle.");
             else
-                You("%s...", stagger(gy.youmonst.data, "stagger"));
+                You("%s...", stagger(u.umonst->data, "stagger"));
         }
     }
     if ((!xtime && old) || (xtime && !old))
@@ -210,9 +210,9 @@ make_slimed(long xtime, const char *msg)
         dealloc_killer(find_delayed_killer(SLIMED));
         /* fake appearance is set late in turn-to-slime countdown */
         if (U_AP_TYPE == M_AP_MONSTER
-            && gy.youmonst.mappearance == PM_GREEN_SLIME) {
-            gy.youmonst.m_ap_type = M_AP_NOTHING;
-            gy.youmonst.mappearance = 0;
+            && u.umonst->mappearance == PM_GREEN_SLIME) {
+            u.umonst->m_ap_type = M_AP_NOTHING;
+            u.umonst->mappearance = 0;
         }
     }
 }
@@ -284,11 +284,11 @@ make_blinded(long xtime, boolean talk)
     } else if (old && !xtime) {
         /* clearing temporary blindness without toggling blindness */
         if (talk) {
-            if (!haseyes(gy.youmonst.data) || PermaBlind) {
+            if (!haseyes(u.umonst->data) || PermaBlind) {
                 strange_feeling((struct obj *) 0, (char *) 0);
             } else if (Blindfolded) {
                 eyes = body_part(EYE);
-                if (eyecount(gy.youmonst.data) != 1)
+                if (eyecount(u.umonst->data) != 1)
                     eyes = makeplural(eyes);
                 Your(eyemsg, eyes, vtense(eyes, "itch"));
             } else { /* Eyes of the Overworld */
@@ -310,11 +310,11 @@ make_blinded(long xtime, boolean talk)
     } else if (!old && xtime) {
         /* setting temporary blindness without toggling blindness */
         if (talk) {
-            if (!haseyes(gy.youmonst.data) || PermaBlind) {
+            if (!haseyes(u.umonst->data) || PermaBlind) {
                 strange_feeling((struct obj *) 0, (char *) 0);
             } else if (Blindfolded) {
                 eyes = body_part(EYE);
-                if (eyecount(gy.youmonst.data) != 1)
+                if (eyecount(u.umonst->data) != 1)
                     eyes = makeplural(eyes);
                 Your(eyemsg, eyes, vtense(eyes, "twitch"));
             } else { /* Eyes of the Overworld */
@@ -397,12 +397,12 @@ make_hallucinated(
 
         /* clearing temporary hallucination without toggling vision */
         if (!changed && !HHallucination && old && talk) {
-            if (!haseyes(gy.youmonst.data)) {
+            if (!haseyes(u.umonst->data)) {
                 strange_feeling((struct obj *) 0, (char *) 0);
             } else if (Blind) {
                 const char *eyes = body_part(EYE);
 
-                if (eyecount(gy.youmonst.data) != 1)
+                if (eyecount(u.umonst->data) != 1)
                     eyes = makeplural(eyes);
                 Your(eyemsg, eyes, vtense(eyes, "itch"));
             } else { /* Grayswandir */
@@ -723,7 +723,7 @@ peffect_water(struct obj *otmp)
         return;
     }
     gp.potion_unkn++;
-    if (mon_hates_blessings(&gy.youmonst) /* undead or demon */
+    if (mon_hates_blessings(u.umonst) /* undead or demon */
         || u.ualign.type == A_CHAOTIC) {
         if (otmp->blessed) {
             pline("This burns like %s!", hliquid("acid"));
@@ -731,7 +731,7 @@ peffect_water(struct obj *otmp)
             if (ismnum(u.ulycn)) {
                 Your("affinity to %s disappears!",
                      makeplural(mons[u.ulycn].pmnames[NEUTRAL]));
-                if (gy.youmonst.data == &mons[u.ulycn])
+                if (u.umonst->data == &mons[u.ulycn])
                     you_unwere(FALSE);
                 set_ulycn(NON_PM); /* cure lycanthropy */
             }
@@ -1262,7 +1262,7 @@ peffect_oil(struct obj *otmp)
     boolean good_for_you = FALSE, vulnerable;
 
     if (otmp->lamplit) {
-        if (likes_fire(gy.youmonst.data)) {
+        if (likes_fire(u.umonst->data)) {
             pline("Ahh, a refreshing drink.");
             good_for_you = TRUE;
         } else {
@@ -1620,12 +1620,12 @@ impact_arti_light(
     return;
 }
 
-/* potion obj hits monster mon, which might be youmonst; obj always used up */
+/* potion obj hits monster mon, which might be u.umonst; obj always used up */
 void
 potionhit(struct monst *mon, struct obj *obj, int how)
 {
     const char *botlnam = bottlename();
-    boolean isyou = (mon == &gy.youmonst);
+    boolean isyou = (mon == u.umonst);
     int distance, tx, ty;
     struct obj *saddle = (struct obj *) 0;
     boolean hit_saddle = FALSE, your_fault = (how <= POTHIT_HERO_THROW);
@@ -1905,7 +1905,7 @@ potionhit(struct monst *mon, struct obj *obj, int how)
 
     /* Note: potionbreathe() does its own docall() */
     if ((distance == 0 || (distance < 3 && !rn2((1+ACURR(A_DEX))/2)))
-        && (!breathless(gy.youmonst.data) || haseyes(gy.youmonst.data)))
+        && (!breathless(u.umonst->data) || haseyes(u.umonst->data)))
         potionbreathe(obj);
     else if (obj->dknown && cansee(tx, ty))
         trycall(obj);
@@ -1950,12 +1950,12 @@ potionbreathe(struct obj *obj)
     case POT_RESTORE_ABILITY:
     case POT_GAIN_ABILITY:
         if (obj->cursed) {
-            if (!breathless(gy.youmonst.data)) {
+            if (!breathless(u.umonst->data)) {
                 pline("Ulch!  That potion smells terrible!");
-            } else if (haseyes(gy.youmonst.data)) {
+            } else if (haseyes(u.umonst->data)) {
                 const char *eyes = body_part(EYE);
 
-                if (eyecount(gy.youmonst.data) != 1)
+                if (eyecount(u.umonst->data) != 1)
                     eyes = makeplural(eyes);
                 Your("%s %s!", eyes, vtense(eyes, "sting"));
             }
@@ -2079,11 +2079,11 @@ potionbreathe(struct obj *obj)
         break;
     case POT_WATER:
         if (u.umonnum == PM_GREMLIN) {
-            (void) split_mon(&gy.youmonst, (struct monst *) 0);
+            (void) split_mon(u.umonst, (struct monst *) 0);
         } else if (ismnum(u.ulycn)) {
             /* vapor from [un]holy water will trigger
                transformation but won't cure lycanthropy */
-            if (obj->blessed && gy.youmonst.data == &mons[u.ulycn])
+            if (obj->blessed && u.umonst->data == &mons[u.ulycn])
                 you_unwere(FALSE);
             else if (obj->cursed && !Upolyd)
                 you_were();
@@ -2427,7 +2427,7 @@ dip_potion_explosion(struct obj *obj, int dmg)
         pline("%sThey explode!", !Deaf ? "BOOM!  " : "");
         wake_nearto(u.ux, u.uy, (BOLT_LIM + 1) * (BOLT_LIM + 1));
         exercise(A_STR, FALSE);
-        if (!breathless(gy.youmonst.data) || haseyes(gy.youmonst.data))
+        if (!breathless(u.umonst->data) || haseyes(u.umonst->data))
             potionbreathe(obj);
         useupall(obj);
         losehp(dmg, /* not physical damage */
@@ -2880,10 +2880,10 @@ split_mon(
     reason[0] = '\0';
     if (mtmp)
         Sprintf(reason, " from %s heat",
-                (mtmp == &gy.youmonst) ? the_your[1]
+                (mtmp == u.umonst) ? the_your[1]
                                     : (const char *) s_suffix(mon_nam(mtmp)));
 
-    if (mon == &gy.youmonst) {
+    if (mon == u.umonst) {
         if (u.mh > u.mhmax) /* sanity precaution */
             u.mh = u.mhmax;
         mtmp2 = (u.mh > 1) ? cloneu() : (struct monst *) 0;
diff --git a/src/pray.c b/src/pray.c
index 55e95e096..c008e3205 100644
--- a/src/pray.c
+++ b/src/pray.c
@@ -173,7 +173,7 @@ stuck_in_wall(void)
             if (!isok(x, y)
                 || (IS_OBSTRUCTED(levl[x][y].typ)
                     && (levl[x][y].typ != SDOOR && levl[x][y].typ != SCORR))
-                || (blocked_boulder(i, j) && !throws_rocks(gy.youmonst.data)))
+                || (blocked_boulder(i, j) && !throws_rocks(u.umonst->data)))
                 ++count;
         }
     }
@@ -229,13 +229,13 @@ in_trouble(void)
         || stuck_ring(uleft, RIN_LEVITATION)
         || stuck_ring(uright, RIN_LEVITATION))
         return TROUBLE_CURSED_LEVITATION;
-    if (nohands(gy.youmonst.data) || !freehand()) {
+    if (nohands(u.umonst->data) || !freehand()) {
         /* for bag/box access [cf use_container()]...
            make sure it's a case that we know how to handle;
            otherwise "fix all troubles" would get stuck in a loop */
         if (welded(uwep))
             return TROUBLE_UNUSEABLE_HANDS;
-        if (Upolyd && nohands(gy.youmonst.data)
+        if (Upolyd && nohands(u.umonst->data)
             && (!Unchanging || ((otmp = unchanger()) != 0 && otmp->cursed)))
             return TROUBLE_UNUSEABLE_HANDS;
     }
@@ -494,7 +494,7 @@ fix_worst_trouble(int trouble)
             fix_curse_trouble(otmp, what);
             break;
         }
-        if (Upolyd && nohands(gy.youmonst.data)) {
+        if (Upolyd && nohands(u.umonst->data)) {
             if (!Unchanging) {
                 Your("shape becomes uncertain.");
                 rehumanize(); /* "You return to {normal} form." */
@@ -504,7 +504,7 @@ fix_worst_trouble(int trouble)
                 break;
             }
         }
-        if (nohands(gy.youmonst.data) || !freehand())
+        if (nohands(u.umonst->data) || !freehand())
             impossible("fix_worst_trouble: couldn't cure hands.");
         break;
     case TROUBLE_CURSED_BLINDFOLD:
@@ -559,7 +559,7 @@ fix_worst_trouble(int trouble)
 
         msgbuf[0] = '\0';
         if (Blinded) {
-            if (eyecount(gy.youmonst.data) != 1)
+            if (eyecount(u.umonst->data) != 1)
                 eyes = makeplural(eyes);
             Sprintf(msgbuf, "Your %s %s better", eyes, vtense(eyes, "feel"));
             u.ucreamed = 0;
@@ -735,7 +735,7 @@ angrygods(aligntyp resp_god)
               (ugod_is_angry() && resp_god == u.ualign.type)
                   ? "hast strayed from the path"
                   : "art arrogant",
-              gy.youmonst.data->mlet == S_HUMAN ? "mortal" : "creature");
+              u.umonst->data->mlet == S_HUMAN ? "mortal" : "creature");
         SetVoice((struct monst *) 0, 0, 80, voice_deity);
         verbalize("Thou must relearn thy lessons!");
         (void) adjattrib(A_WIS, -1, FALSE);
@@ -767,7 +767,7 @@ angrygods(aligntyp resp_god)
                       : "call upon");
         /* [why isn't this using verbalize()?] */
         pline("\"Then die, %s!\"",
-              (gy.youmonst.data->mlet == S_HUMAN) ? "mortal" : "creature");
+              (u.umonst->data->mlet == S_HUMAN) ? "mortal" : "creature");
         summon_minion(resp_god, FALSE);
         break;
 
@@ -1224,7 +1224,7 @@ pleased(aligntyp g_align)
                 if (u.uevent.uheard_tune < 1) {
                     godvoice(g_align, (char *) 0);
                     SetVoice((struct monst *) 0, 0, 80, voice_deity);
-                    verbalize("Hark, %s!", is_human(gy.youmonst.data)
+                    verbalize("Hark, %s!", is_human(u.umonst->data)
                                                ? "mortal"
                                                : "creature");
                     SetVoice((struct monst *) 0, 0, 80, voice_deity);
@@ -1702,7 +1702,7 @@ sacrifice_your_race(
 {
     int pm;
 
-    if (is_demon(gy.youmonst.data)) {
+    if (is_demon(u.umonst->data)) {
         You("find the idea very satisfying.");
         exercise(A_WIS, TRUE);
     } else if (u.ualign.type != A_CHAOTIC) {
@@ -2128,7 +2128,7 @@ can_pray(boolean praying) /* false means no messages should be given */
     gp.p_aligntyp = on_altar() ? a_align(u.ux, u.uy) : u.ualign.type;
     gp.p_trouble = in_trouble();
 
-    if (is_demon(gy.youmonst.data) /* ok if chaotic or none (Moloch) */
+    if (is_demon(u.umonst->data) /* ok if chaotic or none (Moloch) */
         && (gp.p_aligntyp == A_LAWFUL || gp.p_aligntyp != A_NEUTRAL)) {
         if (praying)
             pline_The("very idea of praying to a %s god is repugnant to you.",
@@ -2161,7 +2161,7 @@ can_pray(boolean praying) /* false means no messages should be given */
             gp.p_type = 3;
     }
 
-    if (is_undead(gy.youmonst.data) && !Inhell
+    if (is_undead(u.umonst->data) && !Inhell
         && (gp.p_aligntyp == A_LAWFUL
             || (gp.p_aligntyp == A_NEUTRAL && !rn2(10))))
         gp.p_type = -1;
@@ -2429,7 +2429,7 @@ doturn(void)
     Gname = halu_gname(u.ualign.type);
 
     /* [What about needing free hands (does #turn involve any gesturing)?] */
-    if (!can_chant(&gy.youmonst)) {
+    if (!can_chant(u.umonst)) {
         /* "evilness": "demons and undead" is too verbose and too precise */
         You("are %s upon %s to turn aside evilness.",
             Strangled ? "not able to call" : "incapable of calling", Gname);
@@ -2439,8 +2439,8 @@ doturn(void)
         return (u.uconduct.gnostic == 1) ? ECMD_TIME : ECMD_OK;
     }
     if ((u.ualign.type != A_CHAOTIC
-         && (is_demon(gy.youmonst.data)
-             || is_undead(gy.youmonst.data) || is_vampshifter(&gy.youmonst)))
+         && (is_demon(u.umonst->data)
+             || is_undead(u.umonst->data) || is_vampshifter(u.umonst)))
         || u.ugangr > 6) { /* "Die, mortal!" */
         pline("For some reason, %s seems to ignore you.", Gname);
         aggravate();
diff --git a/src/read.c b/src/read.c
index b422ee082..e9b98eb31 100644
--- a/src/read.c
+++ b/src/read.c
@@ -610,7 +610,7 @@ doread(void)
     }
     scroll->in_use = TRUE; /* scroll, not spellbook, now being read */
     if (otyp != SCR_BLANK_PAPER) {
-        boolean silently = !can_chant(&gy.youmonst);
+        boolean silently = !can_chant(u.umonst);
 
         /* a few scroll feedback messages describe something happening
            to the scroll itself, so avoid "it disappears" for those */
@@ -1118,7 +1118,7 @@ seffect_enchant_armor(struct obj **sobjp)
     schar s;
     boolean special_armor;
     boolean same_color;
-    struct obj *otmp = some_armor(&gy.youmonst);
+    struct obj *otmp = some_armor(u.umonst);
     boolean sblessed = sobj->blessed;
     boolean scursed = sobj->cursed;
     boolean confused = (Confusion != 0);
@@ -1324,7 +1324,7 @@ staticfn void
 seffect_destroy_armor(struct obj **sobjp)
 {
     struct obj *sobj = *sobjp;
-    struct obj *otmp = some_armor(&gy.youmonst);
+    struct obj *otmp = some_armor(u.umonst);
     boolean scursed = sobj->cursed;
     boolean confused = (Confusion != 0);
     boolean old_erodeproof, new_erodeproof;
@@ -1405,7 +1405,7 @@ seffect_confuse_monster(struct obj **sobjp)
             altfeedback = (Blind || Invisible);
     const char *const hands = makeplural(body_part(HAND));
 
-    if (gy.youmonst.data->mlet != S_HUMAN || scursed) {
+    if (u.umonst->data->mlet != S_HUMAN || scursed) {
         if (!HConfusion)
             You_feel("confused.");
         make_confused(HConfusion + rnd(100), FALSE);
@@ -2311,10 +2311,10 @@ drop_boulder_on_player(
         return;
     otmp2->quan = confused ? rn1(5, 2) : 1;
     otmp2->owt = weight(otmp2);
-    if (!amorphous(gy.youmonst.data) && !Passes_walls
-        && !noncorporeal(gy.youmonst.data) && !unsolid(gy.youmonst.data)) {
+    if (!amorphous(u.umonst->data) && !Passes_walls
+        && !noncorporeal(u.umonst->data) && !unsolid(u.umonst->data)) {
         You("are hit by %s!", doname(otmp2));
-        dmg = (int) (dmgval(otmp2, &gy.youmonst) * otmp2->quan);
+        dmg = (int) (dmgval(otmp2, u.umonst) * otmp2->quan);
         if (uarmh && helmet_protects) {
             if (hard_helmet(uarmh)) {
                 pline("Fortunately, you are wearing a hard helmet.");
@@ -2749,9 +2749,9 @@ do_class_genocide(void)
                     kill_genocided_monsters();
                     update_inventory(); /* eggs & tins */
                     pline("Wiped out all %s.", nam);
-                    if (Upolyd && vampshifted(&gy.youmonst)
+                    if (Upolyd && vampshifted(u.umonst)
                         /* current shifted form or base vampire form */
-                        && (i == u.umonnum || i == gy.youmonst.cham))
+                        && (i == u.umonnum || i == u.umonst->cham))
                         polyself(POLY_REVERT); /* vampshifter to vampire */
                     if (Upolyd && i == u.umonnum) {
                         u.mh = -1;
@@ -2895,8 +2895,8 @@ do_genocide(
             }
             ptr = &mons[mndx];
             /* first revert if current shifted form or base vampire form */
-            if (Upolyd && vampshifted(&gy.youmonst)
-                && (mndx == u.umonnum || mndx == gy.youmonst.cham))
+            if (Upolyd && vampshifted(u.umonst)
+                && (mndx == u.umonnum || mndx == u.umonst->cham))
                 polyself(POLY_REVERT); /* vampshifter (bat, &c) to vampire */
             /* Although "genus" is Latin for race, the hero benefits
              * from both race and role; thus genocide affects either.
@@ -2926,7 +2926,7 @@ do_genocide(
                 continue;
             }
             /* KMH -- Unchanging prevents rehumanization */
-            if (Unchanging && ptr == gy.youmonst.data)
+            if (Unchanging && ptr == u.umonst->data)
                 killplayer++;
             break;
         }
@@ -2938,7 +2938,7 @@ do_genocide(
     if (Hallucination) {
         /* hallucinate hero's type */
         if (Upolyd) {
-            Strcpy(buf, pmname(gy.youmonst.data,
+            Strcpy(buf, pmname(u.umonst->data,
                                flags.female ? FEMALE : MALE));
         } else {
             Strcpy(buf, (flags.female && gu.urole.name.f) ? gu.urole.name.f
@@ -2981,13 +2981,13 @@ do_genocide(
 
             /* Polymorphed characters will die as soon as they're rehumanized.
                KMH -- Unchanging prevents rehumanization. */
-            if (Upolyd && ptr != gy.youmonst.data) {
+            if (Upolyd && ptr != u.umonst->data) {
                 delayed_killer(POLYMORPH, svk.killer.format, svk.killer.name);
                 You_feel("%s inside.", udeadinside());
             } else {
                 done(GENOCIDED);
             }
-        } else if (ptr == gy.youmonst.data) {
+        } else if (ptr == u.umonst->data) {
             rehumanize();
         }
         kill_genocided_monsters();
@@ -3033,8 +3033,8 @@ punish(struct obj *sobj)
         uball->owt += WT_IRON_BALL_INCR * (1 + cursed_levy);
         return;
     }
-    if (amorphous(gy.youmonst.data) || is_whirly(gy.youmonst.data)
-        || unsolid(gy.youmonst.data)) {
+    if (amorphous(u.umonst->data) || is_whirly(u.umonst->data)
+        || unsolid(u.umonst->data)) {
         if (!reuse_ball) {
             pline("A ball and chain appears, then falls away.");
             dropy(mkobj(BALL_CLASS, TRUE));
diff --git a/src/region.c b/src/region.c
index 796d48fc1..938a3e2bf 100644
--- a/src/region.c
+++ b/src/region.c
@@ -1092,7 +1092,7 @@ inside_gas_cloud(genericptr_t p1, genericptr_t p2)
 {
     NhRegion *reg = (NhRegion *) p1;
     struct monst *mtmp = (struct monst *) p2;
-    struct monst *umon = mtmp ? mtmp : &gy.youmonst;
+    struct monst *umon = mtmp ? mtmp : u.umonst;
     int dam = reg->arg.a_int;
 
     /*
@@ -1107,8 +1107,8 @@ inside_gas_cloud(genericptr_t p1, genericptr_t p2)
     if (dam < 1)
         return FALSE; /* if no damage then there's nothing to do here... */
 
-    if (!mtmp) { /* hero is indicated by Null rather than by &youmonst */
-        if (m_poisongas_ok(&gy.youmonst) == M_POISONGAS_OK)
+    if (!mtmp) { /* hero is indicated by Null rather than by u.umonst */
+        if (m_poisongas_ok(u.umonst) == M_POISONGAS_OK)
             return FALSE;
         if (!Blind) {
             Your("%s sting.", makeplural(body_part(EYE)));
@@ -1232,7 +1232,7 @@ create_gas_cloud(
        probably a natural cause of being polyed. don't message about it */
     if (!svc.context.mon_moving && u_at(x, y) && cloudsize == 1
         && (!damage
-            || (damage && m_poisongas_ok(&gy.youmonst) == M_POISONGAS_OK)))
+            || (damage && m_poisongas_ok(u.umonst) == M_POISONGAS_OK)))
         inside_cloud = TRUE;
 
     if (cloudsize > MAX_CLOUD_SIZE) {
@@ -1350,7 +1350,7 @@ region_danger(void)
         /* the only type of region we understand is gas_cloud */
         if (f_indx == INSIDE_GAS_CLOUD) {
             /* completely harmless if you don't need to breathe */
-            if (nonliving(gy.youmonst.data) || Breathless)
+            if (nonliving(u.umonst->data) || Breathless)
                 continue;
             /* minor inconvenience if you're poison resistant;
                not harmful enough to be a prayer-level trouble */
diff --git a/src/restore.c b/src/restore.c
index 33066d662..83e2ca546 100644
--- a/src/restore.c
+++ b/src/restore.c
@@ -22,6 +22,7 @@ staticfn struct fruit *loadfruitchn(NHFILE *);
 staticfn void freefruitchn(struct fruit *);
 staticfn void rest_levl(NHFILE *);
 staticfn void rest_stairs(NHFILE *);
+staticfn void rest_u(NHFILE *, boolean);
 #ifndef SFCTOOL
 staticfn void ghostfruit(struct obj *);
 staticfn boolean restgamestate(NHFILE *);
@@ -527,11 +528,11 @@ restgamestate(NHFILE *nhfp)
     int i;
     struct flag newgameflags;
     struct context_info newgamecontext; /* all 0, but has some pointers */
-    struct obj *bc_obj;
-    char timebuf[15];
     unsigned long uid = 0;
+    struct obj *bc_obj;
+    boolean restoring_special = (wizard || discover);
 #ifndef SFCTOOL
-    boolean defer_perm_invent, restoring_special;
+    boolean defer_perm_invent;
     struct obj *otmp;
 #endif
 
@@ -583,7 +584,6 @@ restgamestate(NHFILE *nhfp)
        in the discover case, we don't want to set that for a normal
        game until after the save file has been removed */
     iflags.deferred_X = (newgameflags.explore && !discover);
-    restoring_special = (wizard || discover);
     if (newgameflags.debug) {
         /* authorized by startup code; wizard mode exists and is allowed */
         wizard = TRUE, discover = iflags.deferred_X = FALSE;
@@ -596,31 +596,9 @@ restgamestate(NHFILE *nhfp)
     amii_setpens(amii_numcolors); /* use colors from save file */
 #endif
 #endif /* !SFCTOOL */
-    Sfi_you(nhfp, &u, "gamestate-you");
-    gy.youmonst.cham = u.mcham;
+    rest_u(nhfp, restoring_special);
 
 #ifndef SFCTOOL
-    if (restoring_special && iflags.explore_error_flag) {
-        /* savefile has wizard or explore mode, but player is no longer
-           authorized to access either; can't downgrade mode any further, so
-           fail restoration. */
-        u.uhp = 0;
-    }
-#endif
-
-    Sfi_char(nhfp, timebuf, "gamestate-ubirthday", 14);
-    timebuf[14] = '\0';
-    ubirthday = time_from_yyyymmddhhmmss(timebuf);
-    Sfi_long(nhfp, &urealtime.realtime, "gamestate-realtime");
-    Sfi_char(nhfp, timebuf, "gamestate-start_timing", 14);
-    timebuf[14] = '\0';
-#ifndef SFCTOOL
-    urealtime.start_timing = time_from_yyyymmddhhmmss(timebuf);
-
-    /* current time is the time to use for next urealtime.realtime update */
-    urealtime.start_timing = getnow();
-
-    set_uasmon();
 #ifdef CLIPPING
     cliparound(u.ux, u.uy);
 #endif
@@ -638,7 +616,7 @@ restgamestate(NHFILE *nhfp)
         iflags.perm_invent = defer_perm_invent;
         flags = newgameflags;
         svc.context = newgamecontext;
-        gy.youmonst = cg.zeromonst;
+        free((genericptr_t) u.umonst), u.umonst = 0;
         return FALSE;
     }
     /* in case hangup save occurred in midst of level change */
@@ -663,7 +641,8 @@ restgamestate(NHFILE *nhfp)
             setworn(bc_obj, bc_obj->owornmask);
         bc_obj = nobj;
     }
-#endif
+#endif /* !SFCTOOL  */
+
     gm.migrating_objs = restobjchn(nhfp, FALSE);
     gm.migrating_mons = restmonchn(nhfp);
 
@@ -732,6 +711,43 @@ restgamestate(NHFILE *nhfp)
     return TRUE;
 }
 
+void
+rest_u(NHFILE *nhfp, boolean restoring_special)
+{
+    char timebuf[15];
+
+    Sfi_you(nhfp, &u, "gamestate-you");
+#ifndef SFCTOOL
+    if (restoring_special && iflags.explore_error_flag) {
+        /* savefile has wizard or explore mode, but player is no longer
+           authorized to access either; can't downgrade mode any further, so
+           fail restoration. */
+        u.uhp = 0;
+    }
+#endif
+
+    Sfi_char(nhfp, timebuf, "gamestate-ubirthday", 14);
+    timebuf[14] = '\0';
+    ubirthday = time_from_yyyymmddhhmmss(timebuf);
+    Sfi_long(nhfp, &urealtime.realtime, "gamestate-realtime");
+    Sfi_char(nhfp, timebuf, "gamestate-start_timing", 14);
+    timebuf[14] = '\0';
+#ifndef SFCTOOL
+    urealtime.start_timing = time_from_yyyymmddhhmmss(timebuf);
+
+    /* current time is the time to use for next urealtime.realtime update */
+    urealtime.start_timing = getnow();
+
+    u.umonst = newmonst();
+    *u.umonst = cg.zeromonst;
+    u.umonst->cham = u.mcham;
+    set_uasmon();
+#else
+    nhUse(restoring_special);
+#endif /* !SFCTOOL */
+}
+
+
 #ifndef SFCTOOL
 /* update game state pointers to those valid for the current level (so we
    don't dereference a wild u.ustuck when saving game state, for instance) */
diff --git a/src/save.c b/src/save.c
index fd6dfae2f..a93ae35a4 100644
--- a/src/save.c
+++ b/src/save.c
@@ -31,6 +31,7 @@ staticfn void save_gamelog(NHFILE *);
 staticfn void savegamestate(NHFILE *);
 staticfn void savelev_core(NHFILE *, xint8);
 staticfn void save_msghistory(NHFILE *);
+staticfn void save_u(NHFILE *);
 staticfn void save_adjust_levelflags(void);
 #if defined(HANGUPHANDLING)
 #define HUP if (!program_state.done_hup)
@@ -261,6 +262,27 @@ save_gamelog(NHFILE *nhfp)
         gg.gamelog = NULL;
 }
 
+staticfn void
+save_u(NHFILE *nhfp)
+{
+    struct monst *save_umonst;
+
+    urealtime.finish_time = getnow();
+    urealtime.realtime += timet_delta(urealtime.finish_time,
+                                      urealtime.start_timing);
+
+    save_umonst = u.umonst;
+    u.umonst = (struct monst *) 0;
+    Sfo_you(nhfp, &u, "gamestate-you");
+    u.umonst = save_umonst;
+
+    Sfo_char(nhfp, yyyymmddhhmmss(ubirthday), "gamestate-ubirthday", 14);
+    Sfo_long(nhfp, &urealtime.realtime, "gamestate-realtime");
+    Sfo_char(nhfp, yyyymmddhhmmss(urealtime.start_timing), "gamestate-start_timing", 14);
+    /* this is the value to use for the next update of urealtime.realtime */
+    urealtime.start_timing = urealtime.finish_time;
+}
+
 staticfn void
 savegamestate(NHFILE *nhfp)
 {
@@ -275,17 +297,8 @@ savegamestate(NHFILE *nhfp)
     Sfo_context_info(nhfp, &svc.context, "gamestate-context");
     relative_time_to_moves(&svc.context.seer_turn);
     relative_time_to_moves(&svc.context.digging.lastdigtime);
-
     Sfo_flag(nhfp, &flags, "gamestate-flags");
-    urealtime.finish_time = getnow();
-    urealtime.realtime += timet_delta(urealtime.finish_time,
-                                      urealtime.start_timing);
-    Sfo_you(nhfp, &u, "gamestate-you");
-    Sfo_char(nhfp, yyyymmddhhmmss(ubirthday), "gamestate-ubirthday", 14);
-    Sfo_long(nhfp, &urealtime.realtime, "gamestate-realtime");
-    Sfo_char(nhfp, yyyymmddhhmmss(urealtime.start_timing), "gamestate-start_timing", 14);
-    /* this is the value to use for the next update of urealtime.realtime */
-    urealtime.start_timing = urealtime.finish_time;
+    save_u(nhfp);
     save_killers(nhfp);
 
     /* must come before gm.migrating_objs and gm.migrating_mons are freed */
@@ -1171,6 +1184,9 @@ freedynamicdata(void)
     if (options_set_window_colors_flag)
         options_free_window_colors();
 
+    if (u.umonst)
+        free((genericptr_t) u.umonst), u.umonst = 0;
+
     if (glyphid_cache_status())
         free_glyphid_cache();
 
diff --git a/src/shk.c b/src/shk.c
index 927352971..69a716df7 100644
--- a/src/shk.c
+++ b/src/shk.c
@@ -3609,12 +3609,12 @@ append_honorific(char *buf)
     };
 
     Strcat(buf, honored[rn2(SIZE(honored) - 1) + u.uevent.udemigod]);
-    if (is_vampire(gy.youmonst.data))
+    if (is_vampire(u.umonst->data))
         Strcat(buf, (flags.female) ? " dark lady" : " dark lord");
-    else if (maybe_polyd(is_elf(gy.youmonst.data), Race_if(PM_ELF)))
+    else if (maybe_polyd(is_elf(u.umonst->data), Race_if(PM_ELF)))
         Strcat(buf, (flags.female) ? " hiril" : " hir");
     else
-        Strcat(buf, !is_human(gy.youmonst.data) ? " creature"
+        Strcat(buf, !is_human(u.umonst->data) ? " creature"
                       : (flags.female) ? " lady"
                         : " sir");
 }
@@ -5910,7 +5910,7 @@ cad(
 {
     const char *res = 0;
 
-    switch (is_demon(gy.youmonst.data) ? 3 : poly_gender()) {
+    switch (is_demon(u.umonst->data) ? 3 : poly_gender()) {
     case 0:
         res = "cad";
         break;
@@ -5929,7 +5929,7 @@ cad(
         break;
     }
     if (altusage) {
-        char *cadbuf = mon_nam(&gy.youmonst); /* snag an output buffer */
+        char *cadbuf = mon_nam(u.umonst); /* snag an output buffer */
 
         /* alternate usage adds a leading double quote and trailing
            exclamation point plus sentence separating spaces */
diff --git a/src/sit.c b/src/sit.c
index 15c16dbdf..8f355d95a 100644
--- a/src/sit.c
+++ b/src/sit.c
@@ -157,7 +157,7 @@ throne_sit_effect(void)
                 if (!Blind) {
                     Your("vision becomes clear.");
                 } else {
-                    int num_of_eyes = eyecount(gy.youmonst.data);
+                    int num_of_eyes = eyecount(u.umonst->data);
                     const char *eye = body_part(EYE);
 
                     /* note: 1 eye case won't actually happen--can't
@@ -208,7 +208,7 @@ throne_sit_effect(void)
             break;
         }
     } else {
-        if (is_prince(gy.youmonst.data) || u.uevent.uhand_of_elbereth)
+        if (is_prince(u.umonst->data) || u.uevent.uhand_of_elbereth)
             You_feel("very comfortable here.");
         else
             You_feel("somehow out of place...");
@@ -325,7 +325,7 @@ special_throne_effect(int effect) {
     case 11:
         /* polymorph effect (not blocked by magic resistance, but other things
            that protect from polymorphs work) */
-        if (is_vampire(gy.youmonst.data)) {
+        if (is_vampire(u.umonst->data)) {
             You_feel("unworthy.");
         } else {
             pline("This throne was not meant for those such as you!");
@@ -368,14 +368,14 @@ lay_an_egg(void)
     } else if (u.uhunger < (int) objects[EGG].oc_nutrition) {
         You("don't have enough energy to lay an egg.");
         return ECMD_OK;
-    } else if (eggs_in_water(gy.youmonst.data)) {
+    } else if (eggs_in_water(u.umonst->data)) {
         if (!(Underwater || Is_waterlevel(&u.uz))) {
             pline("A splash tetra you are not.");
             return ECMD_OK;
         }
         if (Upolyd
-            && (gy.youmonst.data == &mons[PM_GIANT_EEL]
-                || gy.youmonst.data == &mons[PM_ELECTRIC_EEL])) {
+            && (u.umonst->data == &mons[PM_GIANT_EEL]
+                || u.umonst->data == &mons[PM_ELECTRIC_EEL])) {
             You("yearn for the Sargasso Sea.");
             return ECMD_OK;
         }
@@ -388,7 +388,7 @@ lay_an_egg(void)
     set_corpsenm(uegg, egg_type_from_parent(u.umonnum, FALSE));
     uegg->known = 1;
     observe_object(uegg);
-    You("%s an egg.", eggs_in_water(gy.youmonst.data) ? "spawn" : "lay");
+    You("%s an egg.", eggs_in_water(u.umonst->data) ? "spawn" : "lay");
     dropy(uegg);
     stackobj(uegg);
     morehungry((int) objects[EGG].oc_nutrition);
@@ -407,7 +407,7 @@ dosit(void)
         You("are already sitting on %s.", mon_nam(u.usteed));
         return ECMD_OK;
     }
-    if (u.uundetected && is_hider(gy.youmonst.data)
+    if (u.uundetected && is_hider(u.umonst->data)
         && u.umonnum != PM_TRAPPER) /* trapper can stay hidden on floor */
         u.uundetected = 0; /* no longer on the ceiling */
 
@@ -419,7 +419,7 @@ dosit(void)
         else
             You("are sitting on air.");
         return ECMD_OK;
-    } else if (u.ustuck && !sticks(gy.youmonst.data)) {
+    } else if (u.ustuck && !sticks(u.umonst->data)) {
         /* holding monster is next to hero rather than beneath, but
            hero is in no condition to actually sit at has/her own spot */
         if (humanoid(u.ustuck->data))
@@ -440,14 +440,14 @@ dosit(void)
         struct obj *obj;
 
         obj = svl.level.objects[u.ux][u.uy];
-        if (gy.youmonst.data->mlet == S_DRAGON && obj->oclass == COIN_CLASS) {
+        if (u.umonst->data->mlet == S_DRAGON && obj->oclass == COIN_CLASS) {
             You("coil up around your %shoard.",
                 (obj->quan + money_cnt(gi.invent) < u.ulevel * 1000)
                 ? "meager " : "");
         } else if (obj->otyp == TOWEL) {
             pline("It's probably not a good time for a picnic...");
         } else {
-            if (slithy(gy.youmonst.data))
+            if (slithy(u.umonst->data))
                 You("coil up around %s.", the(xname(obj)));
             else
                 You("sit on %s.", the(xname(obj)));
@@ -503,16 +503,16 @@ dosit(void)
             dotrap(trap, VIASITTING);
         }
     } else if ((Underwater || Is_waterlevel(&u.uz))
-                && !eggs_in_water(gy.youmonst.data)) {
+                && !eggs_in_water(u.umonst->data)) {
         if (Is_waterlevel(&u.uz))
             There("are no cushions floating nearby.");
         else
             You("sit down on the muddy bottom.");
-    } else if (is_pool(u.ux, u.uy) && !eggs_in_water(gy.youmonst.data)) {
+    } else if (is_pool(u.ux, u.uy) && !eggs_in_water(u.umonst->data)) {
  in_water:
         You("sit in the %s.", hliquid("water"));
         if (Upolyd && u.umonnum == PM_GREMLIN) {
-            if (split_mon(&gy.youmonst, (struct monst *) 0)) {
+            if (split_mon(u.umonst, (struct monst *) 0)) {
                 if (levl[u.ux][u.uy].typ == FOUNTAIN)
                     dryup(u.ux, u.uy, TRUE);
             }
@@ -526,7 +526,7 @@ dosit(void)
     } else if (IS_SINK(typ)) {
         You(sit_message, defsyms[S_sink].explanation);
         Your("%s gets wet.",
-             humanoid(gy.youmonst.data) ? "rump" : "underside");
+             humanoid(u.umonst->data) ? "rump" : "underside");
     } else if (IS_ALTAR(typ)) {
         You(sit_message, defsyms[S_altar].explanation);
         altar_wrath(u.ux, u.uy);
@@ -540,7 +540,7 @@ dosit(void)
         /* must be WWalking */
         You(sit_message, hliquid("lava"));
         burn_away_slime();
-        if (likes_lava(gy.youmonst.data)) {
+        if (likes_lava(u.umonst->data)) {
             pline_The("%s feels warm.", hliquid("lava"));
             return ECMD_TIME;
         }
@@ -556,7 +556,7 @@ dosit(void)
     } else if (IS_THRONE(typ)) {
         You(sit_message, defsyms[S_throne].explanation);
         throne_sit_effect();
-    } else if (lays_eggs(gy.youmonst.data)) {
+    } else if (lays_eggs(u.umonst->data)) {
         return lay_an_egg();
     } else {
         pline("Having fun sitting on the %s?", surface(u.ux, u.uy));
diff --git a/src/sounds.c b/src/sounds.c
index 5e4a0e1cd..002cd8854 100644
--- a/src/sounds.c
+++ b/src/sounds.c
@@ -591,7 +591,7 @@ maybe_gasp(struct monst *mon)
     case MS_VAMPIRE: /* vampire in its own form */
     case MS_WERE: /* lycanthrope in human form */
     case MS_SPELL: /* titan, barrow wight, Nazgul, nalfeshnee */
-        dogasp = (mptr->mlet == gy.youmonst.data->mlet);
+        dogasp = (mptr->mlet == u.umonst->data->mlet);
         break;
     /* capable of speech but don't care if you attack peacefuls */
     case MS_BRIBE:
@@ -703,7 +703,7 @@ domonnoise(struct monst *mtmp)
         msound = MS_SELL;
     /* some normally non-speaking types can/will speak if hero is similar */
     else if (msound == MS_ORC
-             && ((same_race(ptr, gy.youmonst.data)        /* current form, */
+             && ((same_race(ptr, u.umonst->data)        /* current form, */
                   || same_race(ptr, &mons[Race_switch])) /* unpoly'd form */
                  || Hallucination))
         msound = MS_HUMANOID;
@@ -794,12 +794,12 @@ domonnoise(struct monst *mtmp)
             if (kindred) {
                 verbl_msg = "This is my hunting ground"
                             " that you dare to prowl!";
-            } else if (gy.youmonst.data == &mons[PM_SILVER_DRAGON]
-                       || gy.youmonst.data == &mons[PM_BABY_SILVER_DRAGON]) {
+            } else if (u.umonst->data == &mons[PM_SILVER_DRAGON]
+                       || u.umonst->data == &mons[PM_BABY_SILVER_DRAGON]) {
                 /* Silver dragons are silver in color, not made of silver */
                 Sprintf(verbuf,
                         "%s!  Your silver sheen"" does not frighten me!",
-                        (gy.youmonst.data == &mons[PM_SILVER_DRAGON])
+                        (u.umonst->data == &mons[PM_SILVER_DRAGON])
                             ? "Fool"
                             : "Young Fool");
                 verbl_msg = verbuf;
@@ -1107,7 +1107,7 @@ domonnoise(struct monst *mtmp)
 
         if (SYSOPT_SEDUCE) {
             if (ptr->mlet != S_NYMPH
-                && (could_seduce(mtmp, &gy.youmonst, (struct attack *) 0)
+                && (could_seduce(mtmp, u.umonst, (struct attack *) 0)
                     == 1)) {
                 (void) doseduce(mtmp);
                 break;
@@ -1260,9 +1260,9 @@ dochat(void)
     int tx, ty;
     struct obj *otmp;
 
-    if (is_silent(gy.youmonst.data)) {
+    if (is_silent(u.umonst->data)) {
         pline("As %s, you cannot speak.",
-              an(pmname(gy.youmonst.data, flags.female ? FEMALE : MALE)));
+              an(pmname(u.umonst->data, flags.female ? FEMALE : MALE)));
         return ECMD_OK;
     }
     if (Strangled) {
@@ -1395,7 +1395,7 @@ dochat(void)
         return ECMD_OK;
     }
     if (Deaf) {
-        const char *xresponse = humanoid(gy.youmonst.data)
+        const char *xresponse = humanoid(u.umonst->data)
                     ? "falls on deaf ears"
                     : "is inaudible";
 
diff --git a/src/spell.c b/src/spell.c
index 43c2acd51..4d489a123 100644
--- a/src/spell.c
+++ b/src/spell.c
@@ -316,7 +316,7 @@ deadbook(struct obj *book2)
             set_malign(mtmp);
         }
         /* next handle the affect on things you're carrying */
-        (void) unturn_dead(&gy.youmonst);
+        (void) unturn_dead(u.umonst);
         /* last place some monsters around you */
         mm.x = u.ux;
         mm.y = u.uy;
@@ -483,7 +483,7 @@ study_book(struct obj *spellbook)
 
         if (dullbook > 0) {
             eyes = body_part(EYE);
-            if (eyecount(gy.youmonst.data) > 1)
+            if (eyecount(u.umonst->data) > 1)
                 eyes = makeplural(eyes);
             pline("This book is so dull that you can't keep your %s open.",
                   eyes);
@@ -690,7 +690,7 @@ rejectcasting(void)
     if (Stunned) {
         You("are too impaired to cast a spell.");
         return TRUE;
-    } else if (!can_chant(&gy.youmonst)) {
+    } else if (!can_chant(u.umonst)) {
         You("are unable to chant the incantation.");
         return TRUE;
     } else if (!freehand() && !(uwep && uwep->otyp == QUARTERSTAFF)) {
diff --git a/src/steal.c b/src/steal.c
index fd53ff1b7..1c9fcb305 100644
--- a/src/steal.c
+++ b/src/steal.c
@@ -79,7 +79,7 @@ stealgold(struct monst *mtmp)
             whose = s_suffix(y_monnam(who));
             what = makeplural(mbodypart(who, FOOT));
         } else {
-            who = &gy.youmonst;
+            who = u.umonst;
             whose = "your";
             what = makeplural(body_part(FOOT));
         }
@@ -387,7 +387,7 @@ steal(struct monst *mtmp, char *objnambuf)
             /* buried ball is not tracked via 'uball' and there is no chain
                at all (hence no uchain to take off) */
             pline("%s takes off your unseen chain.", Monnambuf);
-            (void) openholdingtrap(&gy.youmonst, &dummy);
+            (void) openholdingtrap(u.umonst, &dummy);
         } else if (Blind) {
             pline("Somebody tries to rob you, but finds nothing to steal.");
         } else if (inv_cnt(TRUE) > inv_cnt(FALSE)) {
diff --git a/src/steed.c b/src/steed.c
index 835a8562f..553e1df3a 100644
--- a/src/steed.c
+++ b/src/steed.c
@@ -68,7 +68,7 @@ use_saddle(struct obj *otmp)
         char kbuf[BUFSZ];
 
         You("touch %s.", mon_nam(mtmp));
-        if (!(poly_when_stoned(gy.youmonst.data) && polymon(PM_STONE_GOLEM))) {
+        if (!(poly_when_stoned(u.umonst->data) && polymon(PM_STONE_GOLEM))) {
             Sprintf(kbuf, "attempting to saddle %s",
                     an(pmname(mtmp->data, Mgender(mtmp))));
             instapetrify(kbuf);
@@ -168,8 +168,8 @@ put_saddle_on_mon(struct obj *saddle, struct monst *mtmp)
 boolean
 can_ride(struct monst *mtmp)
 {
-    return (mtmp->mtame && humanoid(gy.youmonst.data)
-            && !verysmall(gy.youmonst.data) && !bigmonst(gy.youmonst.data)
+    return (mtmp->mtame && humanoid(u.umonst->data)
+            && !verysmall(u.umonst->data) && !bigmonst(u.umonst->data)
             && (!Underwater || is_swimmer(mtmp->data)));
 }
 
@@ -238,10 +238,10 @@ mount_steed(
             return (FALSE);
     }
 
-    if (Upolyd && (!humanoid(gy.youmonst.data)
-                   || verysmall(gy.youmonst.data)
-                   || bigmonst(gy.youmonst.data)
-                   || slithy(gy.youmonst.data))) {
+    if (Upolyd && (!humanoid(u.umonst->data)
+                   || verysmall(u.umonst->data)
+                   || bigmonst(u.umonst->data)
+                   || slithy(u.umonst->data))) {
         You("won't fit on a saddle.");
         return (FALSE);
     }
@@ -545,7 +545,7 @@ landing_spot(
                     kn_trap = i == 0 && ((t = t_at(x, y)) != 0 && t->tseen
                                          && t->ttyp != VIBRATING_SQUARE);
                     boulder = i <= 1 && (sobj_at(BOULDER, x, y)
-                                         && !throws_rocks(gy.youmonst.data));
+                                         && !throws_rocks(u.umonst->data));
                     if (!kn_trap && !boulder) {
                         spot->x = x;
                         spot->y = y;
@@ -566,7 +566,7 @@ landing_spot(
 
     /* If we didn't find a good spot and forceit is on, try enexto(). */
     if (forceit && !found)
-        found = enexto(spot, u.ux, u.uy, gy.youmonst.data);
+        found = enexto(spot, u.ux, u.uy, u.umonst->data);
 
     return found;
 }
diff --git a/src/teleport.c b/src/teleport.c
index b235cb238..48fa7da78 100644
--- a/src/teleport.c
+++ b/src/teleport.c
@@ -105,7 +105,7 @@ goodpos(
      * oh well.
      */
     if (!allow_u) {
-        if (u_at(x, y) && mtmp != &gy.youmonst
+        if (u_at(x, y) && mtmp != u.umonst
             && (mtmp != u.ustuck || !u.uswallow)
             && (!u.usteed || mtmp != u.usteed))
             return FALSE;
@@ -133,7 +133,7 @@ goodpos(
         mdat = mtmp->data;
         if (is_pool(x, y) && !ignorewater) {
             /* [what about Breathless?] */
-            if (mtmp == &gy.youmonst)
+            if (mtmp == u.umonst)
                 return (Swimming || Amphibious
                         || (!Is_waterlevel(&u.uz)
                             && !is_waterwall(x, y)
@@ -152,11 +152,11 @@ goodpos(
                that due the effect of the heat causing it to dry out */
             if (mdat == &mons[PM_FLOATING_EYE])
                 return FALSE;
-            else if (mtmp == &gy.youmonst)
+            else if (mtmp == u.umonst)
                 return (Levitation || Flying
                         || (Fire_resistance && Wwalking && uarmf
                             && uarmf->oerodeproof)
-                        || (Upolyd && likes_lava(gy.youmonst.data)));
+                        || (Upolyd && likes_lava(u.umonst->data)));
             else
                 return (m_in_air(mtmp) || likes_lava(mdat));
         }
@@ -435,7 +435,7 @@ teleok(coordxy x, coordxy y, boolean trapok)
         if (!trapok)
             return FALSE;
     }
-    if (!goodpos(x, y, &gy.youmonst, 0))
+    if (!goodpos(x, y, u.umonst, 0))
         return FALSE;
     if (!tele_jump_ok(u.ux, u.uy, x, y))
         return FALSE;
@@ -490,9 +490,9 @@ teleds(coordxy nux, coordxy nuy, int teleds_flags)
     u.ux0 = u.ux;
     u.uy0 = u.uy;
 
-    if (!hideunder(&gy.youmonst) && gy.youmonst.data->mlet == S_MIMIC) {
+    if (!hideunder(u.umonst) && u.umonst->data->mlet == S_MIMIC) {
         /* mimics stop being unnoticed */
-        gy.youmonst.m_ap_type = M_AP_NOTHING;
+        u.umonst->m_ap_type = M_AP_NOTHING;
     }
 
     if (was_swallowed) {
@@ -816,7 +816,7 @@ tele_to_rnd_pet(void)
     struct monst *mtmp, *pet = (struct monst *) 0;
     int cnt = 0;
 
-    if (noteleport_level(&gy.youmonst)) {
+    if (noteleport_level(u.umonst)) {
         impossible("%s", "attempt to teleport hero to be near a pet"
                          " on no-teleport level");
         return;
@@ -851,7 +851,7 @@ scrolltele(struct obj *scroll)
     coord cc;
 
     /* Disable teleportation in stronghold && Vlad's Tower */
-    if (noteleport_level(&gy.youmonst) && !wizard) {
+    if (noteleport_level(u.umonst) && !wizard) {
         pline("A mysterious force prevents you from teleporting!");
         if (scroll)
             learnscroll(scroll); /* this is obviously a teleport scroll */
@@ -1072,7 +1072,7 @@ dotele(
         int energy = 0;
 
         if (!Teleportation || (u.ulevel < (Role_if(PM_WIZARD) ? 8 : 12)
-                               && !can_teleport(gy.youmonst.data))) {
+                               && !can_teleport(u.umonst->data))) {
             /* Try to use teleport away spell. */
             int knownsp = known_spell(SPE_TELEPORT_AWAY);
 
@@ -1257,7 +1257,7 @@ level_tele(void)
             if (ynq("Go to Nowhere.  Are you sure?") != 'y')
                 return;
             You("%s in agony as your body begins to warp...",
-                is_silent(gy.youmonst.data) ? "writhe" : "scream");
+                is_silent(u.umonst->data) ? "writhe" : "scream");
             display_nhwindow(WIN_MESSAGE, FALSE);
             You("cease to exist.");
             if (gi.invent)
@@ -1499,7 +1499,7 @@ tele_trap(struct trap *trap)
         return;
 
     in_tele_trap = TRUE;
-    if (In_endgame(&u.uz) || Antimagic || noteleport_level(&gy.youmonst)) {
+    if (In_endgame(&u.uz) || Antimagic || noteleport_level(u.umonst)) {
         if (Antimagic)
             shieldeff(u.ux, u.uy);
         You_feel("a wrenching sensation.");
diff --git a/src/timeout.c b/src/timeout.c
index af974c84e..34d11d601 100644
--- a/src/timeout.c
+++ b/src/timeout.c
@@ -142,7 +142,7 @@ stoned_dialogue(void)
         char buf[BUFSZ];
 
         Strcpy(buf, stoned_texts[SIZE(stoned_texts) - i]);
-        if (nolimbs(gy.youmonst.data) && strstri(buf, "limbs"))
+        if (nolimbs(u.umonst->data) && strstri(buf, "limbs"))
             (void) strsubst(buf, "limbs", "extremities");
         urgent_pline("%s", buf);
     }
@@ -232,7 +232,7 @@ vomiting_dialogue(void)
         break;
     case 2:
         txt = vomiting_texts[4];
-        if (cantvomit(gy.youmonst.data))
+        if (cantvomit(u.umonst->data))
             txt = "gag uncontrollably.";
         else if (Hallucination)
             /* "hurl" is short for "hurl chunks" which is slang for
@@ -241,7 +241,7 @@ vomiting_dialogue(void)
         break;
     case 0:
         stop_occupation();
-        if (!cantvomit(gy.youmonst.data)) {
+        if (!cantvomit(u.umonst->data)) {
             morehungry(20);
             /* case 2 used to be "You suddenly vomit!" but it wasn't sudden
                since you've just been through the earlier messages of the
@@ -332,8 +332,8 @@ sickness_dialogue(void)
         if ((u.usick_type & SICK_NONVOMITABLE) == 0)
             (void) strsubst(buf, "illness", "sickness");
         if (Hallucination && strstri(buf, "Death's door")) {
-            /* youmonst: for Hallucination, mhe()'s mon argument isn't used */
-            Strcpy(pronounbuf, mhe(&gy.youmonst));
+            /* u.umonst: for Hallucination, mhe()'s mon argument isn't used */
+            Strcpy(pronounbuf, mhe(u.umonst));
             Sprintf(eos(buf), "  %s %s inviting you in.",
                     /* upstart() modifies its argument but vtense() doesn't
                        care whether or not that has already happened */
@@ -394,8 +394,8 @@ slime_dialogue(void)
         /* display as green slime during "You have become green slime."
            but don't worry about not being able to see self; if already
            mimicking something else at the time, implicitly be revealed */
-        gy.youmonst.m_ap_type = M_AP_MONSTER;
-        gy.youmonst.mappearance = PM_GREEN_SLIME;
+        u.umonst->m_ap_type = M_AP_MONSTER;
+        u.umonst->mappearance = PM_GREEN_SLIME;
         /* no message given when 't' is odd, so no automatic update of
            self; force one */
         newsym(u.ux, u.uy);
@@ -405,7 +405,7 @@ slime_dialogue(void)
         char buf[BUFSZ];
 
         Strcpy(buf, slime_texts[SIZE(slime_texts) - i - 1L]);
-        if (nolimbs(gy.youmonst.data) && strstri(buf, "limbs"))
+        if (nolimbs(u.umonst->data) && strstri(buf, "limbs"))
             (void) strsubst(buf, "limbs", "extremities");
 
         if (strchr(buf, '%')) {
@@ -459,7 +459,7 @@ slimed_to_death(struct kinfo *kptr)
     uchar save_mvflags;
 
     /* redundant: polymon() cures sliming when polying into green slime */
-    if (Upolyd && gy.youmonst.data == &mons[PM_GREEN_SLIME]) {
+    if (Upolyd && u.umonst->data == &mons[PM_GREEN_SLIME]) {
         dealloc_killer(kptr);
         return;
     }
@@ -485,11 +485,11 @@ slimed_to_death(struct kinfo *kptr)
      * [formerly implicit] change of form; polymon() takes care of that.
      * Temporarily ungenocide if necessary.
      */
-    if (emits_light(gy.youmonst.data))
-        del_light_source(LS_MONSTER, monst_to_any(&gy.youmonst));
+    if (emits_light(u.umonst->data))
+        del_light_source(LS_MONSTER, monst_to_any(u.umonst));
     save_mvflags = svm.mvitals[PM_GREEN_SLIME].mvflags;
     svm.mvitals[PM_GREEN_SLIME].mvflags = save_mvflags & ~G_GENOD;
-    /* become a green slime; also resets youmonst.m_ap_type+.mappearance */
+    /* become a green slime; also resets u.umonst.m_ap_type+.mappearance */
     (void) polymon(PM_GREEN_SLIME);
     svm.mvitals[PM_GREEN_SLIME].mvflags = save_mvflags;
     done_timeout(TURNED_SLIME, SLIMED);
@@ -640,8 +640,8 @@ nh_timeout(void)
         sleep_dialogue();
     if (u.mtimedone && !--u.mtimedone) {
         if (Unchanging)
-            u.mtimedone = rnd(100 * gy.youmonst.data->mlevel + 1);
-        else if (is_were(gy.youmonst.data))
+            u.mtimedone = rnd(100 * u.umonst->data->mlevel + 1);
+        else if (is_were(u.umonst->data))
             you_unwere(FALSE); /* if polycontrl, asks whether to rehumanize */
         else
             rehumanize();
diff --git a/src/trap.c b/src/trap.c
index c6b5d7227..cc62fdd3e 100644
--- a/src/trap.c
+++ b/src/trap.c
@@ -94,7 +94,7 @@ burnarmor(struct monst *victim)
 
     if (!victim)
         return 0;
-    hitting_u = (victim == &gy.youmonst);
+    hitting_u = (victim == u.umonst);
 
     /* burning damage may dry wet towel */
     item = hitting_u ? carrying(TOWEL) : m_carrying(victim, TOWEL);
@@ -190,11 +190,11 @@ erode_obj(
     if (!otmp)
         return ER_NOTHING;
 
-    victim = carried(otmp) ? &gy.youmonst
+    victim = carried(otmp) ? u.umonst
              : mcarried(otmp) ? otmp->ocarry
                : (struct monst *) 0;
-    uvictim = (victim == &gy.youmonst);
-    vismon = victim && (victim != &gy.youmonst) && canseemon(victim);
+    uvictim = (victim == u.umonst);
+    vismon = victim && (victim != u.umonst) && canseemon(victim);
     /* Is gb.bhitpos correct here? Ugh. */
     visobj = (!victim && cansee(gb.bhitpos.x, gb.bhitpos.y)
               && (!is_pool(gb.bhitpos.x, gb.bhitpos.y)
@@ -269,7 +269,7 @@ erode_obj(
          */
         if (otmp->oerodeproof) {
             otmp->rknown = TRUE;
-            if (victim == &gy.youmonst)
+            if (victim == u.umonst)
                 update_inventory();
         }
 
@@ -294,7 +294,7 @@ erode_obj(
         else
             otmp->oeroded2++;
 
-        if (victim == &gy.youmonst)
+        if (victim == u.umonst)
             update_inventory();
 
         return ER_DAMAGED;
@@ -363,15 +363,15 @@ grease_protect(
     struct monst *victim)
 {
     static const char txt[] = "protected by the layer of grease!";
-    boolean vismon = victim && (victim != &gy.youmonst) && canseemon(victim);
+    boolean vismon = victim && (victim != u.umonst) && canseemon(victim);
 
     if (ostr) {
-        if (victim == &gy.youmonst)
+        if (victim == u.umonst)
             Your("%s %s %s", ostr, vtense(ostr, "are"), txt);
         else if (vismon)
             pline("%s's %s %s %s", Monnam(victim),
                   ostr, vtense(ostr, "are"), txt);
-    } else if (victim == &gy.youmonst || vismon) {
+    } else if (victim == u.umonst || vismon) {
         pline("%s %s", Yobjnam2(otmp, "are"), txt);
     }
     if (!rn2(2)) {
@@ -634,11 +634,11 @@ fall_through(
         ; /* KMH -- You can't escape the Sokoban level traps */
     } else if (Levitation || u.ustuck
              || (!Can_fall_thru(&u.uz) && !levl[u.ux][u.uy].candig)
-             || ((Flying || is_clinger(gy.youmonst.data)
-                  || (ceiling_hider(gy.youmonst.data) && u.uundetected))
+             || ((Flying || is_clinger(u.umonst->data)
+                  || (ceiling_hider(u.umonst->data) && u.uundetected))
                  && !(ftflags & TOOKPLUNGE))) {
         dont_fall = "don't fall in.";
-    } else if (gy.youmonst.data->msize >= MZ_HUGE) {
+    } else if (u.umonst->data->msize >= MZ_HUGE) {
         dont_fall = "don't fit through.";
     } else if (!next_to_u()) {
         dont_fall = "are jerked back by your pet!";
@@ -653,7 +653,7 @@ fall_through(
         }
         return;
     }
-    if ((Flying || is_clinger(gy.youmonst.data))
+    if ((Flying || is_clinger(u.umonst->data))
         && (ftflags & TOOKPLUNGE) && td && t) {
         if (Flying)
             controlled_flight = TRUE;
@@ -890,7 +890,7 @@ animate_statue(
     delobj(statue);
 
     /* avoid hiding under nothing */
-    if (u_at(x, y) && Upolyd && hides_under(gy.youmonst.data)
+    if (u_at(x, y) && Upolyd && hides_under(u.umonst->data)
         && !OBJ_AT(x, y))
         u.uundetected = 0;
 
@@ -974,7 +974,7 @@ mu_maybe_destroy_web(
     boolean domsg,
     struct trap *trap)
 {
-    boolean isyou = (mtmp == &gy.youmonst);
+    boolean isyou = (mtmp == u.umonst);
     struct permonst *mptr = mtmp->data;
 
     if (amorphous(mptr) || is_whirly(mptr) || flaming(mptr)
@@ -1085,7 +1085,7 @@ floor_trigger(int ttyp)
 staticfn boolean
 check_in_air(struct monst *mtmp, unsigned trflags)
 {
-    boolean is_you = mtmp == &gy.youmonst,
+    boolean is_you = mtmp == u.umonst,
             plunged = (trflags & (TOOKPLUNGE | VIASITTING)) != 0;
 
     return ((trflags & HURTLING) != 0
@@ -1195,7 +1195,7 @@ trapeffect_arrow_trap(
     struct obj *otmp;
     int dam;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         if (trap->once && trap->tseen && !rn2(15)) {
             Soundeffect(se_loud_click, 100);
             You_hear("a loud click!");
@@ -1207,7 +1207,7 @@ trapeffect_arrow_trap(
         seetrap(trap);
         pline("An arrow shoots out at you!");
         otmp = t_missile(ARROW, trap);
-        dam = dmgval(otmp, &gy.youmonst);
+        dam = dmgval(otmp, u.umonst);
         if (u.usteed && !rn2(2) && steedintrap(trap, otmp)) {
             ; /* nothing */
         } else if (thitu(8, Maybe_Half_Phys(dam), &otmp, "arrow")) {
@@ -1256,7 +1256,7 @@ trapeffect_dart_trap(
     struct obj *otmp;
     int dam;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         int oldumort = u.umortality;
 
         if (trap->once && trap->tseen && !rn2(15)) {
@@ -1272,7 +1272,7 @@ trapeffect_dart_trap(
         otmp = t_missile(DART, trap);
         if (!rn2(6))
             otmp->opoisoned = 1;
-        dam = dmgval(otmp, &gy.youmonst);
+        dam = dmgval(otmp, u.umonst);
         if (u.usteed && !rn2(2) && steedintrap(trap, otmp)) {
             ; /* nothing */
         } else if (thitu(7, Maybe_Half_Phys(dam), &otmp, "little dart")) {
@@ -1329,7 +1329,7 @@ trapeffect_rocktrap(
     struct obj *otmp;
     boolean harmless = FALSE;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         if (trap->once && trap->tseen && !rn2(15)) {
             pline("A trap door in %s opens, but nothing falls out!",
                   the(ceiling(u.ux, u.uy)));
@@ -1348,7 +1348,7 @@ trapeffect_rocktrap(
             if (uarmh) {
                 /* normally passes_rocks() would protect against a falling
                    rock, but not when wearing a helmet */
-                if (passes_rocks(gy.youmonst.data)) {
+                if (passes_rocks(u.umonst->data)) {
                     pline("Unfortunately, you are wearing %s.",
                           an(helm_simple_name(uarmh))); /* helm or hat */
                     dmg = 2;
@@ -1358,7 +1358,7 @@ trapeffect_rocktrap(
                 } else if (flags.verbose) {
                     pline("%s does not protect you.", Yname2(uarmh));
                 }
-            } else if (passes_rocks(gy.youmonst.data)) {
+            } else if (passes_rocks(u.umonst->data)) {
                 pline("It passes harmlessly through you.");
                 harmless = TRUE;
             }
@@ -1415,7 +1415,7 @@ trapeffect_sqky_board(
                          || (trflags & FAILEDUNTRAP) != 0
                          || (Flying && (trflags & VIASITTING) != 0));
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         if ((Levitation || Flying) && !forcetrap) {
             if (!Blind) {
                 seetrap(trap);
@@ -1481,7 +1481,7 @@ trapeffect_bear_trap(
     struct trap *trap,
     unsigned trflags)
 {
-    boolean is_you = mtmp == &gy.youmonst,
+    boolean is_you = mtmp == u.umonst,
             forcetrap = ((trflags & FORCETRAP) != 0
                          || (trflags & FAILEDUNTRAP) != 0
                          || (is_you && (trflags & VIASITTING) != 0));
@@ -1492,13 +1492,13 @@ trapeffect_bear_trap(
         if ((Levitation || Flying) && !forcetrap)
             return Trap_Effect_Finished;
         feeltrap(trap);
-        if (amorphous(gy.youmonst.data) || is_whirly(gy.youmonst.data)
-            || unsolid(gy.youmonst.data)) {
+        if (amorphous(u.umonst->data) || is_whirly(u.umonst->data)
+            || unsolid(u.umonst->data)) {
             pline("%s bear trap closes harmlessly through you.",
                   A_Your[trap->madeby_u]);
             return Trap_Effect_Finished;
         }
-        if (!u.usteed && gy.youmonst.data->msize <= MZ_SMALL) {
+        if (!u.usteed && u.umonst->data->msize <= MZ_SMALL) {
             pline("%s bear trap closes harmlessly over you.",
                   A_Your[trap->madeby_u]);
             return Trap_Effect_Finished;
@@ -1565,9 +1565,9 @@ trapeffect_slp_gas_trap(
     struct trap *trap,
     unsigned int trflags UNUSED)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         seetrap(trap);
-        if (Sleep_resistance || breathless(gy.youmonst.data)) {
+        if (Sleep_resistance || breathless(u.umonst->data)) {
             You("are enveloped in a cloud of gas!");
             monstseesu(M_SEEN_SLEEP);
         } else {
@@ -1599,7 +1599,7 @@ trapeffect_rust_trap(
 {
     struct obj *otmp, *nextobj;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         seetrap(trap);
 
         /* Unlike monsters, traps cannot aim their rust attacks at
@@ -1650,7 +1650,7 @@ trapeffect_rust_trap(
             You("are covered with rust!");
             losehp(Maybe_Half_Phys(dam), "rusting away", KILLED_BY);
         } else if (u.umonnum == PM_GREMLIN && rn2(3)) {
-            (void) split_mon(&gy.youmonst, (struct monst *) 0);
+            (void) split_mon(u.umonst, (struct monst *) 0);
         }
     } else {
         boolean in_sight = canseemon(mtmp) || (mtmp == u.usteed);
@@ -1732,7 +1732,7 @@ trapeffect_fire_trap(
     struct trap *trap,
     unsigned int trflags UNUSED)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         seetrap(trap);
         dofiretrap((struct obj *) 0);
     } else {
@@ -1832,7 +1832,7 @@ trapeffect_pit(
        set to false if the spikes are found to not be relevant */
     boolean relevant_spikes = ttype == SPIKED_PIT;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         boolean plunged = (trflags & TOOKPLUNGE) != 0;
         boolean viasitting = (trflags & VIASITTING) != 0;
         boolean conj_pit = conjoined_pits(trap, t_at(u.ux0, u.uy0), TRUE);
@@ -1850,7 +1850,7 @@ trapeffect_pit(
         if (!Sokoban && (Levitation || (Flying && !plunged && !viasitting)))
             return Trap_Effect_Finished;
         feeltrap(trap);
-        if (!Sokoban && is_clinger(gy.youmonst.data) && !plunged) {
+        if (!Sokoban && is_clinger(u.umonst->data) && !plunged) {
             if (already_known) {
                 You_see("%s %spit below you.", a_your[trap->madeby_u],
                         ttype == SPIKED_PIT ? "spiked " : "");
@@ -1946,7 +1946,7 @@ trapeffect_pit(
             } else {
                 /* plunging flyers take spike damage but not pit damage */
                 if (!conj_pit && !deliberate
-                    && !(plunged && (Flying || is_clinger(gy.youmonst.data))))
+                    && !(plunged && (Flying || is_clinger(u.umonst->data))))
                     losehp(Maybe_Half_Phys(rnd(adj_pit ? 3 : 6)),
                            plunged ? "deliberately plunged into a pit"
                            : "fell into a pit",
@@ -2015,7 +2015,7 @@ trapeffect_hole(
     struct trap *trap,
     unsigned int trflags)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         if (!Can_fall_thru(&u.uz)) {
             seetrap(trap); /* normally done in fall_through */
             impossible("dotrap: %ss cannot exist on this level.",
@@ -2072,7 +2072,7 @@ trapeffect_telep_trap(
     struct trap *trap,
     unsigned int trflags UNUSED)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         seetrap(trap);
         tele_trap(trap);
     } else {
@@ -2090,7 +2090,7 @@ trapeffect_level_telep(
     struct trap *trap,
     unsigned int trflags)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         seetrap(trap);
         level_tele_trap(trap, trflags);
     } else {
@@ -2108,7 +2108,7 @@ trapeffect_web(
     struct trap *trap,
     unsigned int trflags)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         boolean webmsgok = (trflags & NOWEBMSG) == 0;
         boolean forcetrap = ((trflags & FORCETRAP) != 0
                              || (trflags & FAILEDUNTRAP) != 0);
@@ -2121,9 +2121,9 @@ trapeffect_web(
             steed_article = ARTICLE_NONE;
 
         feeltrap(trap);
-        if (mu_maybe_destroy_web(&gy.youmonst, webmsgok, trap))
+        if (mu_maybe_destroy_web(u.umonst, webmsgok, trap))
             return Trap_Effect_Finished;
-        if (webmaker(gy.youmonst.data)) {
+        if (webmaker(u.umonst->data)) {
             if (webmsgok)
                 pline(trap->madeby_u ? "You take a walk on your web."
                       : "There is a spider web here.");
@@ -2281,7 +2281,7 @@ trapeffect_statue_trap(
     struct trap *trap,
     unsigned int trflags UNUSED)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         (void) activate_statue_trap(trap, u.ux, u.uy, FALSE);
     } else {
         /* monsters don't trigger statue traps */
@@ -2295,7 +2295,7 @@ trapeffect_magic_trap(
     struct trap *trap,
     unsigned int trflags)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         seetrap(trap);
         if (!rn2(30)) {
             deltrap(trap);
@@ -2332,7 +2332,7 @@ trapeffect_anti_magic(
            rather than the wearer */
         if (shoes->spe > 0) {
             /* no message if a monster does this, it isn't visible enough */
-            if (mtmp == &gy.youmonst) {
+            if (mtmp == u.umonst) {
                 seetrap(trap);
                 pline("A lethargic aura surrounds %s.", yname(shoes));
                 costly_alteration(shoes, COST_DECHNT);
@@ -2343,7 +2343,7 @@ trapeffect_anti_magic(
         }
     }
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         int drain, halfd;
         boolean exclaim_it = FALSE;
 
@@ -2455,7 +2455,7 @@ trapeffect_poly_trap(
     struct trap *trap,
     unsigned int trflags)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         boolean viasitting = (trflags & VIASITTING) != 0;
         int steed_article = ARTICLE_THE;
         char verbbuf[BUFSZ];
@@ -2537,7 +2537,7 @@ trapeffect_landmine(
     if (wearing_iron_shoes(mtmp))
         damage = (damage + 3) / 4;
 
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         boolean already_seen = trap->tseen;
         boolean forcetrap = ((trflags & FORCETRAP) != 0
                              || (trflags & FAILEDUNTRAP) != 0);
@@ -2663,7 +2663,7 @@ trapeffect_rolling_boulder_trap(
     struct trap *trap,
     unsigned int trflags UNUSED)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         int style = ROLL | (trap->tseen ? LAUNCH_KNOWN : 0);
 
         feeltrap(trap);
@@ -2715,7 +2715,7 @@ trapeffect_magic_portal(
     struct trap *trap,
     unsigned int trflags)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         feeltrap(trap);
         domagicportal(trap);
     } else {
@@ -2730,7 +2730,7 @@ trapeffect_vibrating_square(
     struct trap *trap,
     unsigned int trflags UNUSED)
 {
-    if (mtmp == &gy.youmonst) {
+    if (mtmp == u.umonst) {
         feeltrap(trap);
         /* messages handled elsewhere; the trap symbol is merely to mark the
            square for future reference */
@@ -2794,7 +2794,7 @@ immune_to_trap(struct monst *mon, unsigned ttype)
         return TRAP_NOT_IMMUNE;
     }
     pm = mon->data;
-    is_you = (mon == &gy.youmonst);
+    is_you = (mon == u.umonst);
 
     switch (ttype) {
     case ARROW_TRAP:
@@ -2989,7 +2989,7 @@ trapeffect_selector(
         return trapeffect_vibrating_square(mtmp, trap, trflags);
     default:
         impossible("%s encountered a strange trap of type %d.",
-                   (mtmp == &gy.youmonst) ? "You" : "Some monster",
+                   (mtmp == u.umonst) ? "You" : "Some monster",
                    trap->ttyp);
     }
     return Trap_Effect_Finished;
@@ -3026,7 +3026,7 @@ dotrap(struct trap *trap, unsigned trflags)
               trapname(ttype, TRUE)); /* do force "pit" while hallucinating */
         /* then proceed to normal trap effect */
     } else if (!forcetrap) {
-        if (floor_trigger(ttype) && check_in_air(&gy.youmonst, trflags)) {
+        if (floor_trigger(ttype) && check_in_air(u.umonst, trflags)) {
             if (already_seen) {
                 You("%s over %s %s.", u_locomotion("step"),
                     (ttype == ARROW_TRAP && !trap->madeby_u)
@@ -3038,7 +3038,7 @@ dotrap(struct trap *trap, unsigned trflags)
         if (already_seen && !Fumbling && !undestroyable_trap(ttype)
             && ttype != ANTI_MAGIC && !forcebungle && !plunged
             && !conj_pit && !adj_pit
-            && (!rn2(5) || (is_pit(ttype) && is_clinger(gy.youmonst.data)))) {
+            && (!rn2(5) || (is_pit(ttype) && is_clinger(u.umonst->data)))) {
                 You("escape %s %s.", (ttype == ARROW_TRAP && !trap->madeby_u)
                                      ? "an"
                                      : a_your[trap->madeby_u],
@@ -3059,7 +3059,7 @@ dotrap(struct trap *trap, unsigned trflags)
      *  would be somewhat harsh for what's usually a minor impairment.
      */
 
-    (void) trapeffect_selector(&gy.youmonst, trap, trflags);
+    (void) trapeffect_selector(u.umonst, trap, trflags);
 }
 
 staticfn char *
@@ -3398,7 +3398,7 @@ launch_obj(
                 break;
             }
         } else if (u_at(x, y)) {
-            int dam = dmgval(singleobj, &gy.youmonst);
+            int dam = dmgval(singleobj, u.umonst);
 
             if (gm.multi)
                 nomul(0);
@@ -3831,7 +3831,7 @@ instapetrify(const char *str)
 {
     if (Stone_resistance)
         return;
-    if (poly_when_stoned(gy.youmonst.data) && polymon(PM_STONE_GOLEM))
+    if (poly_when_stoned(u.umonst->data) && polymon(PM_STONE_GOLEM))
         return;
     urgent_pline("You turn to stone...");
     svk.killer.format = KILLED_BY;
@@ -4071,7 +4071,7 @@ float_down(
     /* check for falling into pool - added by GAN 10/20/86 */
     if (!Flying) {
         if (!u.uswallow && u.ustuck) {
-            if (sticks(gy.youmonst.data))
+            if (sticks(u.umonst->data))
                 You("aren't able to maintain your hold on %s.",
                     mon_nam(u.ustuck));
             else
@@ -4185,14 +4185,14 @@ climb_pit(void)
         display_nhwindow(WIN_MESSAGE, FALSE);
         clear_nhwindow(WIN_MESSAGE);
         You("free your %s.", body_part(LEG));
-    } else if ((Flying || is_clinger(gy.youmonst.data)) && !Sokoban) {
+    } else if ((Flying || is_clinger(u.umonst->data)) && !Sokoban) {
         /* eg fell in pit, then poly'd to a flying monster;
            or used '>' to deliberately enter it */
         You("%s from the %s.", u_locomotion("climb"), pitname);
         reset_utrap(FALSE);
         fill_pit(u.ux, u.uy);
         gv.vision_full_recalc = 1; /* vision limits change */
-    } else if (!(--u.utrap) || m_easy_escape_pit(&gy.youmonst)) {
+    } else if (!(--u.utrap) || m_easy_escape_pit(u.umonst)) {
         reset_utrap(FALSE);
         You("%s to the edge of the %s.",
             (Sokoban && Levitation)
@@ -4289,8 +4289,8 @@ dofiretrap(
         losehp(num, tower_of_flame, KILLED_BY_AN); /* fire damage */
     burn_away_slime();
 
-    if (burnarmor(&gy.youmonst) || rn2(3)) {
-        (void) destroy_items(&gy.youmonst, AD_FIRE, orig_dmg);
+    if (burnarmor(u.umonst) || rn2(3)) {
+        (void) destroy_items(u.umonst, AD_FIRE, orig_dmg);
         ignite_items(gi.invent);
     }
     if (!box && burn_floor_objects(u.ux, u.uy, see_it, TRUE) && !see_it)
@@ -4311,7 +4311,7 @@ domagictrap(void)
         int cnt = rnd(4);
 
         /* blindness effects */
-        if (!resists_blnd(&gy.youmonst)) {
+        if (!resists_blnd(u.umonst)) {
             You("are momentarily blinded by a flash of light!");
             make_blinded((long) rn1(5, 10), FALSE);
             if (!Blind)
@@ -4348,7 +4348,7 @@ domagictrap(void)
             if (!Invis) {
                 if (!Blind)
                     self_invis_message();
-            } else if (!EInvis && !pm_invisible(gy.youmonst.data)) {
+            } else if (!EInvis && !pm_invisible(u.umonst->data)) {
                 if (!Blind) {
                     if (!See_invisible)
                         You("can see yourself again!");
@@ -4379,7 +4379,7 @@ domagictrap(void)
             if (on_level(&u.uz, &qstart_level))
                 You_feel(
                     "%slike the prodigal son.",
-                    (flags.female || (Upolyd && is_neuter(gy.youmonst.data)))
+                    (flags.female || (Upolyd && is_neuter(u.umonst->data)))
                         ? "oddly "
                         : "");
             else
@@ -4610,10 +4610,10 @@ acid_damage(struct obj *obj)
     if (!obj)
         return;
 
-    victim = carried(obj) ? &gy.youmonst : mcarried(obj) ? obj->ocarry : NULL;
-    vismon = victim && (victim != &gy.youmonst) && canseemon(victim);
+    victim = carried(obj) ? u.umonst : mcarried(obj) ? obj->ocarry : NULL;
+    vismon = victim && (victim != u.umonst) && canseemon(victim);
 
-    if (victim == &gy.youmonst && inventory_resistance_check(AD_ACID))
+    if (victim == u.umonst && inventory_resistance_check(AD_ACID))
         return;
 
     if (obj->greased) {
@@ -4625,7 +4625,7 @@ acid_damage(struct obj *obj)
 #endif
             ) {
             if (!Blind) {
-                if (victim == &gy.youmonst)
+                if (victim == u.umonst)
                     Your("%s.", aobjnam(obj, "fade"));
                 else if (vismon)
                     pline("%s %s.", s_suffix(Monnam(victim)),
@@ -4927,13 +4927,13 @@ emergency_disrobe(boolean *lostsome)
 }
 
 /* pick a random goodpos() next to x,y for monster mtmp.
-   mtmp could be &gy.youmonst, uses then crawl_destination().
+   mtmp could be u.umonst, uses then crawl_destination().
    returns TRUE if any good position found, with the coord in x,y */
 boolean
 rnd_nextto_goodpos(coordxy *x, coordxy *y, struct monst *mtmp)
 {
     int i, j;
-    boolean is_u = (mtmp == &gy.youmonst);
+    boolean is_u = (mtmp == u.umonst);
     coordxy nx, ny, k, dirs[N_DIRS];
 
     for (i = 0; i < N_DIRS; ++i)
@@ -5072,7 +5072,7 @@ drown(void)
     water_damage_chain(gi.invent, FALSE);
 
     if (u.umonnum == PM_GREMLIN && rn2(3)) {
-        (void) split_mon(&gy.youmonst, (struct monst *) 0);
+        (void) split_mon(u.umonst, (struct monst *) 0);
     } else if (u.umonnum == PM_IRON_GOLEM) {
         You("rust!");
         i = Maybe_Half_Phys(d(2, 6));
@@ -5110,10 +5110,10 @@ drown(void)
         gv.vision_full_recalc = 1;
         return FALSE;
     }
-    if ((Teleportation || can_teleport(gy.youmonst.data)) && !Unaware
+    if ((Teleportation || can_teleport(u.umonst->data)) && !Unaware
         && (Teleport_control || rn2(3) < Luck + 2)) {
         You("attempt a teleport spell."); /* utcsri!carroll */
-        if (!noteleport_level(&gy.youmonst)) {
+        if (!noteleport_level(u.umonst)) {
             (void) dotele(FALSE);
             if (!is_pool(u.ux, u.uy))
                 return TRUE;
@@ -5136,8 +5136,8 @@ drown(void)
 
     x = u.ux, y = u.uy;
     /* have to be able to move in order to crawl */
-    if (gm.multi >= 0 && gy.youmonst.data->mmove
-        && rnd_nextto_goodpos(&x, &y, &gy.youmonst)) {
+    if (gm.multi >= 0 && u.umonst->data->mmove
+        && rnd_nextto_goodpos(&x, &y, u.umonst)) {
         boolean lost = FALSE;
         /* time to do some strip-tease... */
         boolean succ = Is_waterlevel(&u.uz) ? TRUE : emergency_disrobe(&lost);
@@ -5248,10 +5248,10 @@ could_untrap(boolean verbosely, boolean check_floor)
     buf[0] = '\0';
     if (near_capacity() >= HVY_ENCUMBER) {
         Strcpy(buf, "You're too strained to do that.");
-    } else if ((nohands(gy.youmonst.data) && !webmaker(gy.youmonst.data))
-               || !gy.youmonst.data->mmove) {
+    } else if ((nohands(u.umonst->data) && !webmaker(u.umonst->data))
+               || !u.umonst->data->mmove) {
         Strcpy(buf, "And just how do you expect to do that?");
-    } else if (u.ustuck && sticks(gy.youmonst.data)) {
+    } else if (u.ustuck && sticks(u.umonst->data)) {
         Sprintf(buf, "You'll have to let go of %s first.", mon_nam(u.ustuck));
     } else if (u.ustuck || (welded(uwep) && bimanual(uwep))) {
         Sprintf(buf, "Your %s seem to be too busy for that.",
@@ -5293,7 +5293,7 @@ untrap_prob(
             if (u_wield_art(ART_STING) || attacks(AD_FIRE, wep))
                 chance = 1;
             /* else chance stays 3 */
-        } else if (!webmaker(gy.youmonst.data)) {
+        } else if (!webmaker(u.umonst->data)) {
             chance = 7; /* 3.7: used to be 30 */
         }
     }
@@ -5444,10 +5444,10 @@ try_disarm(
         return 0;
     }
     /* duplicate tight-space checks from test_move */
-    if (u.dx && u.dy && bad_rock(gy.youmonst.data, u.ux, ttmp->ty)
-        && bad_rock(gy.youmonst.data, ttmp->tx, u.uy)) {
+    if (u.dx && u.dy && bad_rock(u.umonst->data, u.ux, ttmp->ty)
+        && bad_rock(u.umonst->data, ttmp->tx, u.uy)) {
         if ((gi.invent && (inv_weight() + weight_cap() > WT_TOOMUCH_DIAGONAL))
-            || bigmonst(gy.youmonst.data)) {
+            || bigmonst(u.umonst->data)) {
             /* don't allow untrap if they can't get thru to it */
             You("are unable to reach the %s!", trapname(ttype, FALSE));
             return 0;
@@ -5476,7 +5476,7 @@ try_disarm(
                 } else if (ttype == WEB) {
                     struct trap *ttmp2 = t_at(u.ux, u.uy);
 
-                    if (!webmaker(gy.youmonst.data)
+                    if (!webmaker(u.umonst->data)
                         /* don't always try to spread the web */
                         && !rn2(3)
                         /* is there already a trap at hero's spot?
@@ -5722,7 +5722,7 @@ help_monster_out(
         You("grab the trapped %s using your bare %s.",
             mtmp_pmname, makeplural(body_part(HAND)));
 
-        if (poly_when_stoned(gy.youmonst.data) && polymon(PM_STONE_GOLEM)) {
+        if (poly_when_stoned(u.umonst->data) && polymon(PM_STONE_GOLEM)) {
             display_nhwindow(WIN_MESSAGE, FALSE);
         } else {
             char kbuf[BUFSZ];
@@ -5850,7 +5850,7 @@ untrap(
 
     /* 'force' is true for #invoke; if carrying MKoT, make it be true
        for #untrap or autounlock */
-    if (!force && has_magic_key(&gy.youmonst))
+    if (!force && has_magic_key(u.umonst))
         force = TRUE;
 
     if (!rx && !container) {
@@ -6092,7 +6092,7 @@ openholdingtrap(
     struct trap *t, tdummy;
     char buf[BUFSZ], whichbuf[20];
     const char *trapdescr = 0, *which = 0;
-    boolean ishero = (mon == &gy.youmonst);
+    boolean ishero = (mon == u.umonst);
 
     if (!mon)
         return FALSE;
@@ -6200,7 +6200,7 @@ closeholdingtrap(
 {
     struct trap *t;
     unsigned dotrapflags;
-    boolean ishero = (mon == &gy.youmonst), result;
+    boolean ishero = (mon == u.umonst), result;
 
     if (!mon)
         return FALSE;
@@ -6241,7 +6241,7 @@ openfallingtrap(
     boolean *noticed) /* set to true iff hero notices the effect; */
 {                     /* otherwise left with its previous value intact */
     struct trap *t;
-    boolean ishero = (mon == &gy.youmonst), result;
+    boolean ishero = (mon == u.umonst), result;
 
     if (!mon)
         return FALSE;
@@ -6437,7 +6437,7 @@ chest_trap(
             } else {
                 monstunseesu(M_SEEN_ELEC);
             }
-            (void) destroy_items(&gy.youmonst, AD_ELEC, orig_dmg);
+            (void) destroy_items(u.umonst, AD_ELEC, orig_dmg);
             if (dmg)
                 losehp(dmg, "electric shock", KILLED_BY_AN);
             break;
@@ -6464,7 +6464,7 @@ chest_trap(
                 if (Hallucination)
                     pline("What a groovy feeling!");
                 else
-                    You("%s%s...", stagger(gy.youmonst.data, "stagger"),
+                    You("%s%s...", stagger(u.umonst->data, "stagger"),
                         Halluc_resistance ? ""
                                           : Blind ? " and get dizzy"
                                                   : " and your vision blurs");
@@ -6791,7 +6791,7 @@ lava_effects(void)
     }
     feel_newsym(u.ux, u.uy); /* in case Blind, map the lava here */
     burn_away_slime();
-    if (likes_lava(gy.youmonst.data))
+    if (likes_lava(u.umonst->data))
         return FALSE;
 
     usurvive = Fire_resistance || (Wwalking && dmg < u.uhp);
@@ -6967,7 +6967,7 @@ lava_effects(void)
     }
 
  burn_stuff:
-     (void) destroy_items(&gy.youmonst, AD_FIRE, dmg);
+     (void) destroy_items(u.umonst, AD_FIRE, dmg);
     ignite_items(gi.invent);
     return FALSE;
 }
diff --git a/src/u_init.c b/src/u_init.c
index 2b322b497..1d5a5c80f 100644
--- a/src/u_init.c
+++ b/src/u_init.c
@@ -956,6 +956,9 @@ u_init_misc(void)
     (void) memset((genericptr_t) &ubirthday, 0, sizeof(ubirthday));
     (void) memset((genericptr_t) &urealtime, 0, sizeof(urealtime));
 
+    u.umonst = newmonst();
+    *u.umonst = cg.zeromonst;
+    u.umonst->cham = u.mcham = NON_PM;
     u.uroleplay = tmpuroleplay; /* restore options set via rcfile */
 
 #if 0  /* documentation of more zero values as desirable */
diff --git a/src/uhitm.c b/src/uhitm.c
index 00858508e..eb04e0d1a 100644
--- a/src/uhitm.c
+++ b/src/uhitm.c
@@ -79,8 +79,8 @@ mhitm_mgc_atk_negated(
     int armpro;
     boolean negated;
 
-    /* mcan doesn't apply to youmonst; hero can't be cancelled */
-    if (magr != &gy.youmonst && magr->mcan)
+    /* mcan doesn't apply to u.umonst; hero can't be cancelled */
+    if (magr != u.umonst && magr->mcan)
         return TRUE; /* no message if attacker has been cancelled */
 
     armpro = magic_negation(mdef);
@@ -88,7 +88,7 @@ mhitm_mgc_atk_negated(
     if (negated) {
         /* attack has been thwarted by negation, aka magical cancellation */
         if (verbosely) {
-            if (mdef == &gy.youmonst)
+            if (mdef == u.umonst)
                 You("avoid harm.");
             else if (gv.vis && canseemon(mdef))
                 pline_mon(mdef, "%s avoids harm.", Monnam(mdef));
@@ -375,7 +375,7 @@ find_roll_to_hit(
 
     tmp = 1 + abon() + find_mac(mtmp) + u.uhitinc
           + (sgn(Luck) * ((abs(Luck) + 2) / 3))
-          + maybe_polyd(gy.youmonst.data->mlevel, u.ulevel);
+          + maybe_polyd(u.umonst->data->mlevel, u.ulevel);
 
     /* some actions should occur only once during multiple attacks */
     if (!(*attk_count)++) {
@@ -401,7 +401,7 @@ find_roll_to_hit(
             tmp += (u.ulevel / 3) + 2;
     }
     if (is_orc(mtmp->data)
-        && maybe_polyd(is_elf(gy.youmonst.data), Race_if(PM_ELF)))
+        && maybe_polyd(is_elf(u.umonst->data), Race_if(PM_ELF)))
         tmp++;
 
     /* encumbrance: with a lot of luggage, your agility diminishes */
@@ -521,7 +521,7 @@ do_attack(struct monst *mtmp)
     if (attack_checks(mtmp, uwep))
         return TRUE;
 
-    if (Upolyd && noattacks(gy.youmonst.data)) {
+    if (Upolyd && noattacks(u.umonst->data)) {
         /* certain "pacifist" monsters don't attack */
         You("have no way to attack monsters physically.");
         mtmp->mstrategy &= ~STRAT_WAITMASK;
@@ -541,7 +541,7 @@ do_attack(struct monst *mtmp)
         if (flags.verbose) {
             if (uwep)
                 You("begin bashing monsters with %s.", yname(uwep));
-            else if (!cantwield(gy.youmonst.data))
+            else if (!cantwield(u.umonst->data))
                 You("begin %s monsters with your %s %s.",
                     ing_suffix(Role_if(PM_MONK) ? "strike" : "bash"),
                     uarmg ? "gloved" : "bare", /* Del Lamb */
@@ -565,7 +565,7 @@ do_attack(struct monst *mtmp)
     if (Upolyd)
         (void) hmonas(mtmp);
     else
-        (void) hitum(mtmp, gy.youmonst.data->mattk);
+        (void) hitum(mtmp, u.umonst->data->mattk);
     mtmp->mstrategy &= ~STRAT_WAITMASK;
 
  atk_done:
@@ -628,7 +628,7 @@ known_hitum(
                 monflee(mon, !rn2(3) ? rnd(100) : 0, FALSE, TRUE);
 
                 if (u.ustuck == mon && !u.uswallow
-                    && !sticks(gy.youmonst.data))
+                    && !sticks(u.umonst->data))
                     set_ustuck((struct monst *) 0);
             }
             /* Vorpal Blade hit converted to miss */
@@ -858,7 +858,7 @@ hmon_hitmon_barehands(struct _hitmon_data *hmd, struct monst *mon)
     spcdmgflg = uarmg ? W_ARMG
               : (((hmd->twohits == 0 || hmd->twohits == 1) ? W_RINGR : 0L)
                  | ((hmd->twohits == 0 || hmd->twohits == 2) ? W_RINGL : 0L));
-    hmd->dmg += special_dmgval(&gy.youmonst, mon, spcdmgflg, &silverhit);
+    hmd->dmg += special_dmgval(u.umonst, mon, spcdmgflg, &silverhit);
 
     /* copy silverhit info back into struct _hitmon_data *hmd */
     switch (hmd->twohits) {
@@ -1013,7 +1013,7 @@ hmon_hitmon_weapon_melee(
     }
 
     if (obj->oartifact
-        && artifact_hit(&gy.youmonst, mon, obj, &hmd->dmg, hmd->dieroll)) {
+        && artifact_hit(u.umonst, mon, obj, &hmd->dmg, hmd->dieroll)) {
         /* artifact_hit updates 'tmp' but doesn't inflict any
            damage; however, it might cause carried items to be
            destroyed and they might do so */
@@ -1265,7 +1265,7 @@ hmon_hitmon_misc_obj(
     case CREAM_PIE:
     case BLINDING_VENOM:
         mon->msleeping = 0;
-        if (can_blnd(&gy.youmonst, mon,
+        if (can_blnd(u.umonst, mon,
                      (uchar) ((obj->otyp == BLINDING_VENOM)
                               ? AT_SPIT
                               : AT_WEAP),
@@ -1819,7 +1819,7 @@ hmon_hitmon(
             && thrown != HMON_THROWN && thrown != HMON_KICKED)
             /* this gives "harmlessly passes through" feedback even when
                hero doesn't see it happen; presumably sensed by touch? */
-            hmd.hittxt = shade_miss(&gy.youmonst, mon, obj, FALSE, TRUE);
+            hmd.hittxt = shade_miss(u.umonst, mon, obj, FALSE, TRUE);
     }
 
     if (hmd.jousting) {
@@ -1925,7 +1925,7 @@ hmon_hitmon(
 
         wakeup(mon, TRUE);
         if (maybe_knockback
-            && mhitm_knockback(&gy.youmonst, mon, gy.youmonst.data->mattk,
+            && mhitm_knockback(u.umonst, mon, u.umonst->data->mattk,
                                &hitflags, TRUE)) {
             if ((hitflags & M_ATTK_DEF_DIED) != 0)
                 hmd.destroyed = TRUE;
@@ -2021,7 +2021,7 @@ shade_miss(
     boolean verbose)
 {
     const char *what, *whose, *target;
-    boolean youagr = (magr == &gy.youmonst), youdef = (mdef == &gy.youmonst);
+    boolean youagr = (magr == u.umonst), youdef = (mdef == u.umonst);
 
     /* we're using dmgval() for zero/not-zero, not for actual damage amount */
     if (mdef->data != &mons[PM_SHADE] || (obj && dmgval(obj, mdef)))
@@ -2029,7 +2029,7 @@ shade_miss(
 
     if (verbose
         && ((youdef || cansee(mdef->mx, mdef->my) || sensemon(mdef))
-            || (magr == &gy.youmonst && m_next2u(mdef)))) {
+            || (magr == u.umonst && m_next2u(mdef)))) {
         static const char harmlessly_thru[] = " harmlessly through ";
 
         what = (!obj || shade_aware(obj)) ? "attack" : cxname(obj);
@@ -2138,7 +2138,7 @@ demonpet(void)
 
     pline("Some hell-p has arrived!");
     i = !rn2(6) ? ndemon(u.ualign.type) : NON_PM;
-    pm = i != NON_PM ? &mons[i] : gy.youmonst.data;
+    pm = i != NON_PM ? &mons[i] : u.umonst->data;
     if ((dtmp = makemon(pm, u.ux, u.uy, NO_MM_FLAGS)) != 0)
         (void) tamedog(dtmp, (struct obj *) 0, FALSE);
     exercise(A_WIS, TRUE);
@@ -2152,7 +2152,7 @@ theft_petrifies(struct obj *otmp)
         return FALSE;
 
 #if 0   /* no poly_when_stoned() critter has theft capability */
-    if (poly_when_stoned(gy.youmonst.data) && polymon(PM_STONE_GOLEM)) {
+    if (poly_when_stoned(u.umonst->data) && polymon(PM_STONE_GOLEM)) {
         display_nhwindow(WIN_MESSAGE, FALSE);   /* --More-- */
         return TRUE;
     }
@@ -2182,7 +2182,7 @@ steal_it(struct monst *mdef, struct attack *mattk)
 
     /* look for worn body armor */
     ustealo = (struct obj *) 0;
-    if (could_seduce(&gy.youmonst, mdef, mattk) && mdef->mcanmove) {
+    if (could_seduce(u.umonst, mdef, mattk) && mdef->mcanmove) {
         /* find armor, and move it to end of inventory in the process */
         minvent_ptr = &mdef->minvent;
         while ((otmp = *minvent_ptr) != 0)
@@ -2206,7 +2206,7 @@ steal_it(struct monst *mdef, struct attack *mattk)
            but was using hardcoded pronouns She/her for target monster;
            switch to dynamic pronoun */
         if (gender(mdef) == (int) u.mfemale
-            && gy.youmonst.data->mlet == S_NYMPH)
+            && u.umonst->data->mlet == S_NYMPH)
             You("charm %s.  %s gladly hands over %s%s possessions.",
                 mon_nam(mdef), upstart(strcpy(heshe, mhe(mdef))),
                 !gold ? "" : "most of ", mhis(mdef));
@@ -2284,7 +2284,7 @@ mhitm_ad_rust(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (completelyrusts(pd)) { /* iron golem */
             /* note: the life-saved case is hypothetical because
@@ -2296,7 +2296,7 @@ mhitm_ad_rust(
         }
         erode_armor(mdef, ERODE_RUST);
         mhm->damage = 0; /* damageum(), int tmp */
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (magr->mcan) {
@@ -2308,7 +2308,7 @@ mhitm_ad_rust(
             rehumanize();
             return;
         }
-        erode_armor(&gy.youmonst, ERODE_RUST);
+        erode_armor(u.umonst, ERODE_RUST);
     } else {
         /* mhitm */
         if (magr->mcan)
@@ -2339,11 +2339,11 @@ mhitm_ad_corr(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         erode_armor(mdef, ERODE_CORRODE);
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (magr->mcan)
@@ -2366,7 +2366,7 @@ mhitm_ad_dcay(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (completelyrots(pd)) { /* wood golem or leather golem */
             pline("%s %s to pieces!", Monnam(mdef),
@@ -2375,7 +2375,7 @@ mhitm_ad_dcay(
         }
         erode_armor(mdef, ERODE_ROT);
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (magr->mcan)
@@ -2421,12 +2421,12 @@ mhitm_ad_dren(
 {
     boolean negated = mhitm_mgc_atk_negated(magr, mdef, FALSE);
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!negated && !rn2(4))
             xdrainenergym(mdef, TRUE);
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!negated && !rn2(4)) /* 25% chance */
@@ -2446,7 +2446,7 @@ mhitm_ad_drli(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!rn2(3) && !(resists_drli(mdef) || defended(mdef, AD_DRLI))
             && !mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
@@ -2476,7 +2476,7 @@ mhitm_ad_drli(
             /* unlike hitting with Stormbringer, wounded hero doesn't
                heal any from the drained life */
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!rn2(3) && !Drain_resistance
@@ -2525,7 +2525,7 @@ mhitm_ad_fire(
     struct permonst *pd = mdef->data;
     const int orig_dmg = mhm->damage; /* damage coming into the function */
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
             mhm->damage = 0;
@@ -2558,7 +2558,7 @@ mhitm_ad_fire(
         }
         mhm->damage += destroy_items(mdef, AD_FIRE, orig_dmg);
         ignite_items(mdef->minvent);
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
@@ -2577,7 +2577,7 @@ mhitm_ad_fire(
                 monstunseesu(M_SEEN_FIRE);
             }
             if ((int) magr->m_lev > rn2(20)) {
-                (void) destroy_items(&gy.youmonst, AD_FIRE, orig_dmg);
+                (void) destroy_items(u.umonst, AD_FIRE, orig_dmg);
                 ignite_items(gi.invent);
             }
             burn_away_slime();
@@ -2629,7 +2629,7 @@ mhitm_ad_cold(
 {
     const int orig_dmg = mhm->damage;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
             mhm->damage = 0;
@@ -2645,7 +2645,7 @@ mhitm_ad_cold(
             mhm->damage = 0;
         }
         mhm->damage += destroy_items(mdef, AD_COLD, orig_dmg);
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
@@ -2658,7 +2658,7 @@ mhitm_ad_cold(
                 monstunseesu(M_SEEN_COLD);
             }
             if ((int) magr->m_lev > rn2(20))
-                (void) destroy_items(&gy.youmonst, AD_COLD, orig_dmg);
+                (void) destroy_items(u.umonst, AD_COLD, orig_dmg);
         } else
             mhm->damage = 0;
     } else {
@@ -2687,7 +2687,7 @@ mhitm_ad_elec(
 {
     const int orig_dmg = mhm->damage;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
             mhm->damage = 0;
@@ -2703,7 +2703,7 @@ mhitm_ad_elec(
             mhm->damage = 0;
         }
         mhm->damage += destroy_items(mdef, AD_ELEC, orig_dmg);
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
@@ -2716,7 +2716,7 @@ mhitm_ad_elec(
                 monstunseesu(M_SEEN_ELEC);
             }
             if ((int) magr->m_lev > rn2(20))
-                (void) destroy_items(&gy.youmonst, AD_ELEC, orig_dmg);
+                (void) destroy_items(u.umonst, AD_ELEC, orig_dmg);
         } else
             mhm->damage = 0;
     } else {
@@ -2743,11 +2743,11 @@ mhitm_ad_acid(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (resists_acid(mdef) || defended(mdef, AD_ACID))
             mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!magr->mcan && !rn2(3))
@@ -2794,7 +2794,7 @@ mhitm_ad_sgld(
     struct permonst *pa = magr->data;
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         struct obj *mongold = findgold(mdef->minvent);
 
@@ -2812,7 +2812,7 @@ mhitm_ad_sgld(
         }
         exercise(A_DEX, TRUE);
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (pd->mlet == pa->mlet)
@@ -2860,7 +2860,7 @@ mhitm_ad_tlpt(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (mhm->damage <= 0)
             mhm->damage = 1;
@@ -2881,7 +2881,7 @@ mhitm_ad_tlpt(
                 mhm->damage = mdef->mhp - 1;
             }
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         int tmphp;
 
@@ -2961,7 +2961,7 @@ mhitm_ad_blnd(
     struct monst *mdef,     /* defender */
     struct mhitm_data *mhm) /* optional for monster vs monster */
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (can_blnd(magr, mdef, mattk->aatyp, (struct obj *) 0)) {
             if (!Blind && mdef->mcansee)
@@ -2973,7 +2973,7 @@ mhitm_ad_blnd(
             mdef->mblinded = mhm->damage;
         }
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         if (can_blnd(magr, mdef, mattk->aatyp, (struct obj *) 0)) {
             if (!Blind)
@@ -3019,7 +3019,7 @@ mhitm_ad_curs(
     struct permonst *pa = magr->data;
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (night() && !rn2(10) && !mdef->mcan) {
             if (pd == &mons[PM_CLAY_GOLEM]) {
@@ -3034,7 +3034,7 @@ mhitm_ad_curs(
             }
         }
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!night() && pa == &mons[PM_GREMLIN])
@@ -3126,7 +3126,7 @@ mhitm_ad_drst(
     boolean negated = mhitm_mgc_atk_negated(magr, mdef, FALSE);
     struct permonst *pa = magr->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!negated && !rn2(8)) {
             Your("%s was poisoned!", mpoisons_subj(magr, mattk));
@@ -3140,7 +3140,7 @@ mhitm_ad_drst(
                     mhm->damage += rn1(10, 6);
             }
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         int ptmp = A_STR;  /* A_STR == 0 */
         char buf[BUFSZ];
@@ -3182,7 +3182,7 @@ mhitm_ad_drin(
      * attack and no longer wearing any amulet after the attack.
      */
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         struct obj *helmet;
 
@@ -3213,13 +3213,13 @@ mhitm_ad_drin(
         amu = which_armor(mdef, W_AMUL);
         lifsav = amu && amu->otyp == AMULET_OF_LIFE_SAVING;
 
-        (void) eat_brains(&gy.youmonst, mdef, TRUE, &mhm->damage);
+        (void) eat_brains(u.umonst, mdef, TRUE, &mhm->damage);
 
         /* skip further AD_DRIN if amulet of life-saving got used up */
         if (lifsav && !which_armor(mdef, W_AMUL))
             gs.skipdrin = TRUE;
 
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (defends(AD_DRIN, uwep) || !has_head(pd)) {
@@ -3311,14 +3311,14 @@ mhitm_ad_stck(
     struct permonst *pd = mdef->data;
     boolean barbs = (magr->data == &mons[PM_BARBED_DEVIL]);
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!negated && !sticks(pd) && m_next2u(mdef)) {
             set_ustuck(mdef); /* it's now stuck to you */
             if (barbs)
                 Your("barbs stick to %s!", y_monnam(mdef));
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!negated && !u.ustuck && !sticks(pd)) {
@@ -3341,7 +3341,7 @@ mhitm_ad_wrap(
     struct permonst *pd = mdef->data, *pa = magr->data;
     boolean coil = slithy(pa) && (pa->mlet == S_SNAKE || pa->mlet == S_NAGA);
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!sticks(pd)) {
             boolean tailmiss = !gn.notonhead;
@@ -3373,7 +3373,7 @@ mhitm_ad_wrap(
             }
         } else
             mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         if ((!magr->mcan || u.ustuck == magr) && !sticks(pd)) {
             if (!u.ustuck && !rn2(10)) {
@@ -3432,7 +3432,7 @@ mhitm_ad_plys(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!rn2(3) && mhm->damage < mdef->mhp
             && !mhitm_mgc_atk_negated(magr, mdef, TRUE)) {
@@ -3440,7 +3440,7 @@ mhitm_ad_plys(
                 pline("%s is frozen by you!", Monnam(mdef));
             paralyze_monst(mdef, rnd(10));
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (gm.multi >= 0 && !rn2(3)
@@ -3481,7 +3481,7 @@ mhitm_ad_slee(
     struct monst *mdef,
     struct mhitm_data *mhm UNUSED)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!mdef->msleeping && !mhitm_mgc_atk_negated(magr, mdef, FALSE)
             && sleep_monst(mdef, rnd(10), -1)) {
@@ -3489,7 +3489,7 @@ mhitm_ad_slee(
                 pline("%s is put to sleep by you!", Monnam(mdef));
             slept_monst(mdef);
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (gm.multi >= 0 && !rn2(5)
@@ -3530,7 +3530,7 @@ mhitm_ad_slim(
     boolean negated = mhitm_mgc_atk_negated(magr, mdef, FALSE);
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (negated)
             return; /* physical damage only */
@@ -3550,7 +3550,7 @@ mhitm_ad_slim(
             }
             mhm->damage = 0;
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (negated) {
@@ -3605,10 +3605,10 @@ mhitm_ad_ench(
     struct monst *mdef,
     struct mhitm_data *mhm UNUSED)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         /* there's no msomearmor() function, so just do damage */
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         boolean negated = mhitm_mgc_atk_negated(magr, mdef, FALSE);
 
@@ -3659,7 +3659,7 @@ mhitm_ad_slow(
     if (defended(mdef, AD_SLOW))
         return;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!negated && mdef->mspeed != MSLOW) {
             unsigned int oldspeed = mdef->mspeed;
@@ -3668,7 +3668,7 @@ mhitm_ad_slow(
             if (mdef->mspeed != oldspeed && canseemon(mdef))
                 pline("%s slows down.", Monnam(mdef));
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!negated && HFast && !rn2(4))
@@ -3691,14 +3691,14 @@ mhitm_ad_conf(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!mdef->mconf) {
             if (canseemon(mdef))
                 pline("%s looks confused.", Monnam(mdef));
             mdef->mconf = 1;
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!magr->mcan && !rn2(4) && !magr->mspec_used) {
@@ -3733,7 +3733,7 @@ mhitm_ad_poly(
     boolean negated = (mhitm_mgc_atk_negated(magr, mdef, FALSE)
                        || magr->mspec_used);
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         /* require weaponless attack in order to honor AD_POLY */
         if (!uwep && mhm->damage < mdef->mhp) {
@@ -3741,14 +3741,14 @@ mhitm_ad_poly(
                 /* assume that you can tell by touch if blinded */
                 pline("%s is not transformed.", Monnam(mdef));
             } else {
-                mhm->damage = mon_poly(&gy.youmonst, mdef, mhm->damage);
+                mhm->damage = mon_poly(u.umonst, mdef, mhm->damage);
                 if (DEADMONSTER(mdef))
                     mhm->hitflags |= M_ATTK_DEF_DIED;
                 mhm->hitflags |= M_ATTK_HIT;
                 mhm->done = TRUE;
             }
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (Maybe_Half_Phys(mhm->damage) < (Upolyd ? u.mh : u.uhp)) {
@@ -3756,7 +3756,7 @@ mhitm_ad_poly(
                 if (magr->mcan)
                     You("aren't transformed.");
             } else {
-                mhm->damage = mon_poly(magr, &gy.youmonst, mhm->damage);
+                mhm->damage = mon_poly(magr, u.umonst, mhm->damage);
                 mhm->hitflags |= M_ATTK_HIT;
                 mhm->done = TRUE;
             }
@@ -3781,12 +3781,12 @@ mhitm_ad_famn(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm; hero can't polymorph into anything with this attack
            so this won't happen; if it could, it would be the same as
            the mhitm case except for messaging */
         goto mhitm_famn;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         pline_mon(magr, "%s reaches out, and your body shrivels.",
                   Monnam(magr));
@@ -3812,12 +3812,12 @@ mhitm_ad_pest(
     struct attack alt_attk;
     struct permonst *pa = magr->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm; hero can't polymorph into anything with this attack
            so this won't happen; if it could, it would be the same as
            the mhitm case except for messaging */
         goto mhitm_pest;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         pline_mon(magr, "%s reaches out, and you feel fever and chills.",
                   Monnam(magr));
@@ -3841,12 +3841,12 @@ mhitm_ad_deth(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm; hero can't polymorph into anything with this attack
            so this won't happen; if it could, it would be the same as
            the mhitm case except for messaging */
         goto mhitm_deth;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         pline_mon(magr, "%s reaches out with its deadly touch.", Monnam(magr));
         if (is_undead(pd)) {
@@ -3901,10 +3901,10 @@ mhitm_ad_halu(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         mhm->damage = 0;
     } else {
@@ -3924,7 +3924,7 @@ boolean
 do_stone_u(struct monst *mtmp)
 {
     if (!Stoned && !Stone_resistance
-        && !(poly_when_stoned(gy.youmonst.data)
+        && !(poly_when_stoned(u.umonst->data)
              && polymon(PM_STONE_GOLEM))) {
         int kformat = KILLED_BY_AN;
         const char *kname = pmname(mtmp->data, Mgender(mtmp));
@@ -3985,7 +3985,7 @@ mhitm_ad_phys(
     struct permonst *pa = magr->data;
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (pd == &mons[PM_SHADE]) {
             mhm->damage = 0;
@@ -4018,7 +4018,7 @@ mhitm_ad_phys(
                     mhm->damage = 1;
             }
         }
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         if (mattk->aatyp == AT_HUGS && !sticks(pd)) {
             if (!u.ustuck && rn2(2)) {
@@ -4103,7 +4103,7 @@ mhitm_ad_phys(
                     if (cloneu())
                         You("divide as %s hits you!", mon_nam(magr));
                 }
-                rustm(&gy.youmonst, otmp);
+                rustm(u.umonst, otmp);
                 if (was_poisoned && gm.mhitu_dieroll <= 5) {
                     char buf[BUFSZ];
 
@@ -4204,12 +4204,12 @@ mhitm_ad_ston(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!munstone(mdef, TRUE))
             minstapetrify(mdef, TRUE);
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!rn2(3)) {
@@ -4268,12 +4268,12 @@ mhitm_ad_were(
 {
     struct permonst *pa = magr->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         mhitm_ad_phys(magr, mattk, mdef, mhm);
         if (mhm->done)
             return;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!rn2(4) && u.ulycn == NON_PM
@@ -4299,12 +4299,12 @@ mhitm_ad_heal(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         mhitm_ad_phys(magr, mattk, mdef, mhm);
         if (mhm->done)
             return;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         /* a cancelled nurse is just an ordinary monster,
          * nurses don't heal those that cause petrification */
@@ -4391,7 +4391,7 @@ mhitm_ad_stun(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         if (!Blind)
             pline("%s %s for a moment.", Monnam(mdef),
@@ -4400,7 +4400,7 @@ mhitm_ad_stun(
         mhitm_ad_phys(magr, mattk, mdef, mhm);
         if (mhm->done)
             return;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!magr->mcan && !rn2(4)) {
@@ -4426,7 +4426,7 @@ mhitm_ad_legs(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
 #if 0
         if (u.ucancelled) {
@@ -4437,7 +4437,7 @@ mhitm_ad_legs(
         mhitm_ad_phys(magr, mattk, mdef, mhm);
         if (mhm->done)
             return;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         long side = rn2(2) ? RIGHT_SIDE : LEFT_SIDE;
         const char *sidestr = (side == RIGHT_SIDE) ? "right" : "left",
@@ -4496,10 +4496,10 @@ mhitm_ad_dgst(
 {
     struct permonst *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         mhm->damage = 0;
     } else {
@@ -4571,10 +4571,10 @@ mhitm_ad_samu(
     struct monst *magr, struct attack *mattk,
     struct monst *mdef, struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         /* when the Wizard or quest nemesis hits, there's a 1/20 chance
@@ -4596,12 +4596,12 @@ mhitm_ad_dise(
 {
     struct permonst *pa = magr->data, *pd = mdef->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm; hero can't polymorph into anything with this attack so
            this won't happen; if it could, it would be the same as the
            mhitm case except for messaging */
         goto mhitm_dise;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         hitmsg(magr, mattk);
         if (!diseasemu(pa))
@@ -4626,11 +4626,11 @@ mhitm_ad_sedu(
 {
     struct permonst *pa = magr->data;
 
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         steal_it(mdef, mattk);
         mhm->damage = 0;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         char buf[BUFSZ];
 
@@ -4639,11 +4639,11 @@ mhitm_ad_sedu(
             if (magr->mcan)
                 return;
             /* Continue below */
-        } else if (dmgtype(gy.youmonst.data, AD_SEDU)
+        } else if (dmgtype(u.umonst->data, AD_SEDU)
                    /* !SYSOPT_SEDUCE: when hero is attacking and AD_SSEX
                       is disabled, it would be changed to another damage
                       type, but when defending, it remains as-is */
-                   || dmgtype(gy.youmonst.data, AD_SSEX)) {
+                   || dmgtype(u.umonst->data, AD_SSEX)) {
             pline_mon(magr, "%s %s.", Monnam(magr),
                   Deaf ? "says something but you can't hear it"
                   : magr->minvent
@@ -4751,12 +4751,12 @@ void
 mhitm_ad_ssex(struct monst *magr, struct attack *mattk, struct monst *mdef,
               struct mhitm_data *mhm)
 {
-    if (magr == &gy.youmonst) {
+    if (magr == u.umonst) {
         /* uhitm */
         mhitm_ad_sedu(magr, mattk, mdef, mhm);
         if (mhm->done)
             return;
-    } else if (mdef == &gy.youmonst) {
+    } else if (mdef == u.umonst) {
         /* mhitu */
         if (SYSOPT_SEDUCE) {
             if (could_seduce(magr, mdef, mattk) == 1 && !magr->mcan)
@@ -4845,13 +4845,13 @@ damageum(
     mhm.specialdmg = specialdmg;
     mhm.done = FALSE;
 
-    if (is_demon(gy.youmonst.data) && !rn2(13) && !uwep
+    if (is_demon(u.umonst->data) && !rn2(13) && !uwep
         && u.umonnum != PM_AMOROUS_DEMON && u.umonnum != PM_BALROG) {
         demonpet();
         return M_ATTK_MISS;
     }
 
-    mhitm_adtyping(&gy.youmonst, mattk, mdef, &mhm);
+    mhitm_adtyping(u.umonst, mattk, mdef, &mhm);
 
     if (mhm.done)
         return mhm.hitflags;
@@ -4930,12 +4930,12 @@ explum(struct monst *mdef, struct attack *mattk)
 staticfn void
 start_engulf(struct monst *mdef)
 {
-    boolean u_digest = digests(gy.youmonst.data),
-            u_enfold = enfolds(gy.youmonst.data);
+    boolean u_digest = digests(u.umonst->data),
+            u_enfold = enfolds(u.umonst->data);
 
     if (!Invisible) {
         map_location(u.ux, u.uy, TRUE);
-        tmp_at(DISP_ALWAYS, mon_to_glyph(&gy.youmonst, rn2_on_display_rng));
+        tmp_at(DISP_ALWAYS, mon_to_glyph(u.umonst, rn2_on_display_rng));
         tmp_at(mdef->mx, mdef->my);
     }
     You("%s %s%s!",
@@ -4961,8 +4961,8 @@ gulpum(struct monst *mdef, struct attack *mattk)
     int tmp;
     int dam = d((int) mattk->damn, (int) mattk->damd);
     boolean fatal_gulp,
-            u_digest = digests(gy.youmonst.data),
-            u_enfold = enfolds(gy.youmonst.data);
+            u_digest = digests(u.umonst->data),
+            u_enfold = enfolds(u.umonst->data);
     struct obj *otmp;
     struct permonst *pd = mdef->data;
     const char *expel_verb = u_digest ? "regurgitate"
@@ -4977,11 +4977,11 @@ gulpum(struct monst *mdef, struct attack *mattk)
      * after exactly 1 round of attack otherwise.  -KAA
      */
 
-    if (!engulf_target(&gy.youmonst, mdef))
+    if (!engulf_target(u.umonst, mdef))
         return M_ATTK_MISS;
 
     if (!(u_digest && u.uhunger >= 1500) && !u.uswallow) {
-        if (!flaming(gy.youmonst.data)) {
+        if (!flaming(u.umonst->data)) {
             for (otmp = mdef->minvent; otmp; otmp = otmp->nobj)
                 (void) snuff_lit(otmp);
         }
@@ -5060,14 +5060,14 @@ gulpum(struct monst *mdef, struct attack *mattk)
                    "you totally digest <mdef>" will be coming soon (after
                    several turns) but the level-gain message seems out of
                    order if the kill message is left implicit */
-                gm.mswallower = &gy.youmonst;
+                gm.mswallower = u.umonst;
                 xkilled(mdef, XKILL_GIVEMSG | XKILL_NOCORPSE);
                 if (!DEADMONSTER(mdef)) { /* monster lifesaved */
                     You("hurriedly regurgitate the sizzling in your %s.",
                         body_part(STOMACH));
                 } else {
                     tmp = 1 + (pd->cwt >> 8);
-                    if (corpse_chance(mdef, &gy.youmonst, TRUE)
+                    if (corpse_chance(mdef, u.umonst, TRUE)
                         && !(svm.mvitals[monsndx(pd)].mvflags & G_NOCORPSE)) {
                         /* nutrition only if there can be a corpse */
                         u.uhunger += (pd->cnutrit + 1) / 2;
@@ -5105,7 +5105,7 @@ gulpum(struct monst *mdef, struct attack *mattk)
                 end_engulf();
                 return M_ATTK_DEF_DIED;
             case AD_PHYS:
-                if (gy.youmonst.data == &mons[PM_FOG_CLOUD]) {
+                if (u.umonst->data == &mons[PM_FOG_CLOUD]) {
                     pline("%s is laden with your moisture.", Monnam(mdef));
                     if ((breathless(pd) || amphibious(pd)) && !flaming(pd)) {
                         dam = 0;
@@ -5113,7 +5113,7 @@ gulpum(struct monst *mdef, struct attack *mattk)
                     }
                 } else {
                     pline("%s is %s!", Monnam(mdef),
-                          enfolds(gy.youmonst.data) ? "being squashed"
+                          enfolds(u.umonst->data) ? "being squashed"
                             : "pummeled with your debris");
                 }
                 break;
@@ -5125,7 +5125,7 @@ gulpum(struct monst *mdef, struct attack *mattk)
                 }
                 break;
             case AD_BLND:
-                if (can_blnd(&gy.youmonst, mdef, mattk->aatyp,
+                if (can_blnd(u.umonst, mdef, mattk->aatyp,
                              (struct obj *) 0)) {
                     if (mdef->mcansee)
                         pline("%s can't see in there!", Monnam(mdef));
@@ -5185,7 +5185,7 @@ gulpum(struct monst *mdef, struct attack *mattk)
                     return M_ATTK_DEF_DIED;
             }
             You("%s %s!", expel_verb, mon_nam(mdef));
-            if ((Slow_digestion || is_animal(gy.youmonst.data)) && u_digest) {
+            if ((Slow_digestion || is_animal(u.umonst->data)) && u_digest) {
                 pline("Obviously, you didn't like %s taste.",
                       s_suffix(mon_nam(mdef)));
             }
@@ -5203,7 +5203,7 @@ missum(
     if (wouldhavehit) /* monk is missing due to penalty for wearing suit */
         Your("armor is rather cumbersome...");
 
-    if (could_seduce(&gy.youmonst, mdef, mattk))
+    if (could_seduce(u.umonst, mdef, mattk))
         You("pretend to be friendly to %s.", mon_nam(mdef));
     else if (canspotmon(mdef) && flags.verbose)
         You("miss %s.", mon_nam(mdef));
@@ -5217,7 +5217,7 @@ missum(
 boolean
 m_is_steadfast(struct monst *mtmp)
 {
-    boolean is_u = (mtmp == &gy.youmonst);
+    boolean is_u = (mtmp == u.umonst);
     struct obj *otmp = is_u ? uwep : MON_WEP(mtmp);
 
     /* must be on the ground (or in water) */
@@ -5231,7 +5231,7 @@ m_is_steadfast(struct monst *mtmp)
         return TRUE;
 
     /* steadfast if carrying any loadstone (and not floating or flying);
-       'is_u' test not needed here; m_carrying() is 'youmonst' aware */
+       'is_u' test not needed here; m_carrying() is 'u.umonst' aware */
     if (m_carrying(mtmp, LOADSTONE))
         return TRUE;
     /* when mounted and steed is target of knockback, check the rider for
@@ -5257,8 +5257,8 @@ mhitm_knockback(
     coordxy dx, dy, defx, defy;
     int knockdistance = rn2(3) ? 1 : 2; /* 67%: 1 step, 33%: 2 steps */
     int chance = 6; /* 1/6 chance of attack knocking back a monster */
-    boolean u_agr = (magr == &gy.youmonst);
-    boolean u_def = (mdef == &gy.youmonst);
+    boolean u_agr = (magr == u.umonst);
+    boolean u_def = (mdef == u.umonst);
     boolean was_u = FALSE, dismount = FALSE;
     struct obj *wep = weapon_used ? (u_agr ? uwep : MON_WEP(magr))
                                   : (struct obj *) 0;
@@ -5438,7 +5438,7 @@ hmonas(struct monst *mon)
        whether silver ring causes successful hit */
     for (i = 0; i < NATTK; i++) {
         sum[i] = M_ATTK_MISS;
-        mattk = getmattk(&gy.youmonst, mon, i, sum, &alt_attk);
+        mattk = getmattk(u.umonst, mon, i, sum, &alt_attk);
         if (mattk->aatyp == AT_WEAP)
             ++multi_weap;
         if (mattk->aatyp == AT_WEAP
@@ -5460,7 +5460,7 @@ hmonas(struct monst *mon)
                       || DEADMONSTER(mon)))
             continue;
 
-        mattk = getmattk(&gy.youmonst, mon, i, sum, &alt_attk);
+        mattk = getmattk(u.umonst, mon, i, sum, &alt_attk);
         if (gs.skipdrin && mattk->aatyp == AT_TENT && mattk->adtyp == AD_DRIN)
             continue;
         weapon = 0;
@@ -5546,17 +5546,17 @@ hmonas(struct monst *mon)
                 sum[i] = damageum(mon, mattk, 0);
             break;
         case AT_CLAW:
-            if (uwep && !cantwield(gy.youmonst.data) && !weapon_used)
+            if (uwep && !cantwield(u.umonst->data) && !weapon_used)
                 goto use_weapon;
             FALLTHROUGH;
             /*FALLTHRU*/
         case AT_TUCH:
-            if (uwep && gy.youmonst.data->mlet == S_LICH && !weapon_used)
+            if (uwep && u.umonst->data->mlet == S_LICH && !weapon_used)
                 goto use_weapon;
             FALLTHROUGH;
             /*FALLTHRU*/
         case AT_KICK:
-            if (mattk->aatyp == AT_KICK && mtrapped_in_pit(&gy.youmonst))
+            if (mattk->aatyp == AT_KICK && mtrapped_in_pit(u.umonst))
                 continue;
             FALLTHROUGH;
             /*FALLTHRU*/
@@ -5576,7 +5576,7 @@ hmonas(struct monst *mon)
                 const char *verb = 0; /* verb or body part */
 
                 if (!u.uswallow
-                    && (compat = could_seduce(&gy.youmonst, mon, mattk))
+                    && (compat = could_seduce(u.umonst, mon, mattk))
                        != 0) {
                     You("%s %s %s.",
                         (mon->mcansee && haseyes(mon->data)) ? "smile at"
@@ -5604,7 +5604,7 @@ hmonas(struct monst *mon)
                        {bite,claw,claw} instead of {claw,claw,bite} doesn't
                        make poly'd hero mysteriously switch handedness */
                     odd_claw = !odd_claw;
-                    specialdmg = special_dmgval(&gy.youmonst, mon,
+                    specialdmg = special_dmgval(u.umonst, mon,
                                                 W_ARMG
                                                 | ((odd_claw || !multi_claw)
                                                    ? W_RINGL : 0L)
@@ -5619,7 +5619,7 @@ hmonas(struct monst *mon)
                     break;
                 case AT_KICK:
                     verb = "kick";
-                    specialdmg = special_dmgval(&gy.youmonst, mon, W_ARMF,
+                    specialdmg = special_dmgval(u.umonst, mon, W_ARMF,
                                                 &silverhit);
                     break;
                 case AT_BUTT:
@@ -5627,7 +5627,7 @@ hmonas(struct monst *mon)
                     /* hypothetical; if any form with a head-butt attack
                        could wear a helmet, it would hit shades when
                        wearing a blessed (or silver) one */
-                    specialdmg = special_dmgval(&gy.youmonst, mon, W_ARMH,
+                    specialdmg = special_dmgval(u.umonst, mon, W_ARMH,
                                                 &silverhit);
                     break;
                 case AT_BITE:
@@ -5649,7 +5649,7 @@ hmonas(struct monst *mon)
                 } else {
                     /* either not a shade or no special silver/blessed damage,
                        other unsolid monsters are immune to AT_TUCH+AD_WRAP */
-                    if (failed_grab(&gy.youmonst, mon, mattk))
+                    if (failed_grab(u.umonst, mon, mattk))
                         break; /* miss; message already given */
 
                     if (mattk->aatyp == AT_TENT) {
@@ -5659,7 +5659,7 @@ hmonas(struct monst *mon)
                             verb = "hit"; /* not "claws" */
                         You("%s %s.", verb, mon_nam(mon));
                         if (silverhit && flags.verbose)
-                            silver_sears(&gy.youmonst, mon, silverhit);
+                            silver_sears(u.umonst, mon, silverhit);
                     }
                     sum[i] = damageum(mon, mattk, specialdmg);
                 }
@@ -5694,7 +5694,7 @@ hmonas(struct monst *mon)
             wakeup(mon, TRUE);
             /* choking hug/throttling grab uses hands (gloves or rings);
                normal hug uses outermost of cloak/suit/shirt */
-            specialdmg = special_dmgval(&gy.youmonst, mon,
+            specialdmg = special_dmgval(u.umonst, mon,
                                         byhand ? (W_ARMG | W_RINGL | W_RINGR)
                                                : (W_ARMC | W_ARM | W_ARMU),
                                         &silverhit);
@@ -5723,7 +5723,7 @@ hmonas(struct monst *mon)
                 if (specialdmg) {
                     You("%s %s%s", verb, mon_nam(mon), exclam(specialdmg));
                     if (silverhit && flags.verbose)
-                        silver_sears(&gy.youmonst, mon, silverhit);
+                        silver_sears(u.umonst, mon, silverhit);
                     sum[i] = damageum(mon, mattk, specialdmg);
                 } else {
                     Your("%s passes harmlessly through %s.",
@@ -5732,7 +5732,7 @@ hmonas(struct monst *mon)
                 break;
             }
             /* can't grab unsolid creatures (checked after shade handling) */
-            if (failed_grab(&gy.youmonst, mon, mattk))
+            if (failed_grab(u.umonst, mon, mattk))
                 break;
             /* hug attack against ordinary foe */
             if (mon == u.ustuck) {
@@ -5741,7 +5741,7 @@ hmonas(struct monst *mon)
                       /* extra feedback for non-breather being choked */
                       unconcerned ? " but doesn't seem concerned" : "");
                 if (silverhit && flags.verbose)
-                    silver_sears(&gy.youmonst, mon, silverhit);
+                    silver_sears(u.umonst, mon, silverhit);
                 sum[i] = damageum(mon, mattk, specialdmg);
             } else if (i >= 2 && (sum[i - 1] > M_ATTK_MISS)
                        && (sum[i - 2] > M_ATTK_MISS)) {
@@ -5753,7 +5753,7 @@ hmonas(struct monst *mon)
                 You("grab %s!", mon_nam(mon));
                 set_ustuck(mon);
                 if (silverhit && flags.verbose)
-                    silver_sears(&gy.youmonst, mon, silverhit);
+                    silver_sears(u.umonst, mon, silverhit);
                 sum[i] = damageum(mon, mattk, specialdmg);
             }
             break; /* AT_HUGS */
@@ -5776,7 +5776,7 @@ hmonas(struct monst *mon)
                 if (mon->data == &mons[PM_SHADE]) {
                     /* no specialdmg check needed */
                     Your("attempt to surround %s is harmless.", mon_nam(mon));
-                } else if (failed_grab(&gy.youmonst, mon, mattk)) {
+                } else if (failed_grab(u.umonst, mon, mattk)) {
                     ; /* non-shade miss; message already given */
                 } else {
                     sum[i] = gulpum(mon, mattk);
@@ -5797,9 +5797,9 @@ hmonas(struct monst *mon)
             /* No check for uwep; if wielding nothing we want to
              * do the normal 1-2 points bare hand damage...
              */
-            if ((gy.youmonst.data->mlet == S_KOBOLD
-                 || gy.youmonst.data->mlet == S_ORC
-                 || gy.youmonst.data->mlet == S_GNOME) && !weapon_used)
+            if ((u.umonst->data->mlet == S_KOBOLD
+                 || u.umonst->data->mlet == S_ORC
+                 || u.umonst->data->mlet == S_GNOME) && !weapon_used)
                 goto use_weapon;
             FALLTHROUGH;
             /*FALLTHRU*/
@@ -5830,7 +5830,7 @@ hmonas(struct monst *mon)
                            mattk->aatyp, FALSE);
         }
 
-        if (mhitm_knockback(&gy.youmonst, mon, mattk, &sum[i], weapon_used))
+        if (mhitm_knockback(u.umonst, mon, mattk, &sum[i], weapon_used))
             break;
 
         /* don't use sum[i] beyond this point;
@@ -5918,7 +5918,7 @@ passive(
                 monstseesu(M_SEEN_ACID);
             }
             if (!rn2(30))
-                erode_armor(&gy.youmonst, ERODE_CORRODE);
+                erode_armor(u.umonst, ERODE_CORRODE);
         }
         if (mhitb && weapon) {
             if (aatyp == AT_KICK) {
@@ -5947,7 +5947,7 @@ passive(
                 || (protector == W_ARMH && !uarmh)
                 || (protector == (W_ARMC | W_ARMG) && (!uarmc || !uarmg))) {
                 if (!Stone_resistance
-                    && !(poly_when_stoned(gy.youmonst.data)
+                    && !(poly_when_stoned(u.umonst->data)
                          && polymon(PM_STONE_GOLEM))) {
                     done_in_by(mon, STONING); /* "You turn to stone..." */
                     return M_ATTK_DEF_DIED;
@@ -6079,7 +6079,7 @@ passive(
                 healmon(mon, (tmp + rn2(2)) / 2, (tmp + 1) / 2);
                 /* at a certain point, the monster will reproduce! */
                 if (mon->mhpmax > (((int) mon->m_lev) + 1) * 8)
-                    (void) split_mon(mon, &gy.youmonst);
+                    (void) split_mon(mon, u.umonst);
             }
             break;
         case AD_STUN: /* specifically yellow mold */
diff --git a/src/vault.c b/src/vault.c
index 90157b7fa..ef4065805 100644
--- a/src/vault.c
+++ b/src/vault.c
@@ -466,18 +466,18 @@ invault(void)
         }
         if (U_AP_TYPE == M_AP_OBJECT || u.uundetected) {
             if (U_AP_TYPE == M_AP_OBJECT
-                && gy.youmonst.mappearance != GOLD_PIECE)
+                && u.umonst->mappearance != GOLD_PIECE)
                 if (!Deaf) {
                     SetVoice(guard, 0, 80, 0);
                     verbalize("Hey!  Who left that %s in here?",
-                              mimic_obj_name(&gy.youmonst));
+                              mimic_obj_name(u.umonst));
                 }
             /* You're mimicking some object or you're hidden. */
             pline("Puzzled, %s turns around and leaves.", mhe(guard));
             mongone(guard);
             return;
         }
-        if (Strangled || is_silent(gy.youmonst.data) || gm.multi < 0) {
+        if (Strangled || is_silent(u.umonst->data) || gm.multi < 0) {
             /* [we ought to record whether this message has already
                been given in order to vary it upon repeat visits, but
                discarding the monster and its egd data renders that hard] */
@@ -1065,7 +1065,7 @@ gd_move(struct monst *grd)
     }
     if (um_dist(grd->mx, grd->my, 1) || egrd->gddone) {
         if (!egrd->gddone && !rn2(10) && !Deaf && !u.uswallow
-            && !(u.ustuck && !sticks(gy.youmonst.data))) {
+            && !(u.ustuck && !sticks(u.umonst->data))) {
             SetVoice(grd, 0, 80, 0);
             verbalize("Move along!");
         }
diff --git a/src/weapon.c b/src/weapon.c
index 81da05613..b400ac91c 100644
--- a/src/weapon.c
+++ b/src/weapon.c
@@ -405,7 +405,7 @@ special_dmgval(
         }
 
     /* when no gloves we check for silver rings (blessed rings ignored) */
-    } else if ((left_ring || right_ring) && magr == &gy.youmonst) {
+    } else if ((left_ring || right_ring) && magr == u.umonst) {
         if (left_ring && uleft) {
             if (objects[uleft->otyp].oc_material == SILVER
                 && mon_hates_silver(mdef)) {
diff --git a/src/were.c b/src/were.c
index 59197177f..df6ebc15c 100644
--- a/src/were.c
+++ b/src/were.c
@@ -218,12 +218,12 @@ you_unwere(boolean purify)
         You_feel("purified.");
         set_ulycn(NON_PM); /* cure lycanthropy */
     }
-    if (!Unchanging && is_were(gy.youmonst.data)
+    if (!Unchanging && is_were(u.umonst->data)
         && !monster_nearby()
         && (!controllable_poly
             || !paranoid_query(ParanoidWerechange, "Remain in beast form?")))
         rehumanize();
-    else if (is_were(gy.youmonst.data) && !u.mtimedone)
+    else if (is_were(u.umonst->data) && !u.mtimedone)
         u.mtimedone = rn1(200, 200); /* 40% of initial were change */
 }
 
diff --git a/src/wield.c b/src/wield.c
index 21aad53c4..b6fbdc83a 100644
--- a/src/wield.c
+++ b/src/wield.c
@@ -158,7 +158,7 @@ const char *
 empty_handed(void)
 {
     return uarmg ? "empty handed" /* gloves imply hands */
-           : humanoid(gy.youmonst.data)
+           : humanoid(u.umonst->data)
              /* hands but no weapon and no gloves */
              ? "bare handed"
                /* alternate phrasing for paws or lack of hands */
@@ -360,7 +360,7 @@ dowield(void)
 
     /* May we attempt this? */
     gm.multi = 0;
-    if (cantwield(gy.youmonst.data)) {
+    if (cantwield(u.umonst->data)) {
         pline("Don't be ridiculous!");
         return ECMD_FAIL;
     }
@@ -465,7 +465,7 @@ doswapweapon(void)
 
     /* May we attempt this? */
     gm.multi = 0;
-    if (cantwield(gy.youmonst.data)) {
+    if (cantwield(u.umonst->data)) {
         pline("Don't be ridiculous!");
         return ECMD_FAIL;
     }
@@ -716,7 +716,7 @@ wield_tool(struct obj *obj,
         }
         return FALSE;
     }
-    if (cantwield(gy.youmonst.data)) {
+    if (cantwield(u.umonst->data)) {
         You_cant("hold %s strongly enough.", more_than_1 ? "them" : "it");
         return FALSE;
     }
@@ -762,7 +762,7 @@ can_twoweapon(void)
 {
     struct obj *otmp;
 
-    if (!could_twoweap(gy.youmonst.data)) {
+    if (!could_twoweap(u.umonst->data)) {
         if (Upolyd)
             You_cant("use two weapons in your current form.");
         else
diff --git a/src/wizcmds.c b/src/wizcmds.c
index b045578b8..0bee2da86 100644
--- a/src/wizcmds.c
+++ b/src/wizcmds.c
@@ -892,7 +892,7 @@ wiz_smell(void)
 
     cc.x = u.ux;
     cc.y = u.uy;
-    if (!olfaction(gy.youmonst.data)) {
+    if (!olfaction(u.umonst->data)) {
         You("are incapable of detecting odors in your present form.");
         return ECMD_OK;
     }
@@ -909,7 +909,7 @@ wiz_smell(void)
             if (u.usteed) {
                 mptr = u.usteed->data;
             } else {
-                mptr = gy.youmonst.data;
+                mptr = u.umonst->data;
                 is_you = TRUE;
             }
         } else if ((mtmp = m_at(cc.x, cc.y)) != (struct monst *) 0) {
diff --git a/src/worn.c b/src/worn.c
index a481f3372..9ffcb8c24 100644
--- a/src/worn.c
+++ b/src/worn.c
@@ -459,7 +459,7 @@ check_wornmask_slots(void)
             why = "uswapwep is not a melee weapon";
         else if (bimanual(uswapwep))
             why = "uswapwep is two-handed";
-        else if (!could_twoweap(gy.youmonst.data))
+        else if (!could_twoweap(u.umonst->data))
             why = "without two weapon attacks";
 
         if (why)
@@ -1005,7 +1005,7 @@ m_dowear_type(
 struct obj *
 which_armor(struct monst *mon, long flag)
 {
-    if (mon == &gy.youmonst) {
+    if (mon == u.umonst) {
         switch (flag) {
         case W_ARM:
             return uarm;
diff --git a/src/write.c b/src/write.c
index d7a1eddb4..dc7ccbd36 100644
--- a/src/write.c
+++ b/src/write.c
@@ -84,7 +84,7 @@ dowrite(struct obj *pen)
     const char *typeword;
     int spell_knowledge;
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You("need hands to be able to write!");
         return ECMD_OK;
     } else if (Glib) {
diff --git a/src/zap.c b/src/zap.c
index bdaa54cec..163ee6c38 100644
--- a/src/zap.c
+++ b/src/zap.c
@@ -590,7 +590,7 @@ release_hold(void)
         }
         /* gives "you get regurgitated" or "you get expelled from <mon>" */
         expels(mtmp, mtmp->data, TRUE);
-    } else if (sticks(gy.youmonst.data)) {
+    } else if (sticks(u.umonst->data)) {
         /* order matters if 'holding' status condition is enabled;
            set_ustuck() will set flag for botl update, You() pline will
            trigger a status update with "UHold" removed */
@@ -694,7 +694,7 @@ get_mon_location(
     coordxy *xp, coordxy *yp,
     int locflags) /* non-zero means get location even if monster is buried */
 {
-    if (mon == &gy.youmonst || (u.usteed && mon == u.usteed)) {
+    if (mon == u.umonst || (u.usteed && mon == u.usteed)) {
         *xp = u.ux;
         *yp = u.uy;
         return TRUE;
@@ -1159,7 +1159,7 @@ unturn_dead(struct monst *mon)
     struct monst *mtmp2;
     char owner[BUFSZ], corpse[BUFSZ];
     unsigned save_norevive;
-    boolean youseeit, different_type, is_u = (mon == &gy.youmonst);
+    boolean youseeit, different_type, is_u = (mon == u.umonst);
     int corpsenm, res = 0;
 
     youseeit = is_u ? TRUE : canseemon(mon);
@@ -1224,9 +1224,9 @@ unturn_dead(struct monst *mon)
 void
 unturn_you(void)
 {
-    (void) unturn_dead(&gy.youmonst); /* hit carried corpses and eggs */
+    (void) unturn_dead(u.umonst); /* hit carried corpses and eggs */
 
-    if (is_undead(gy.youmonst.data)) {
+    if (is_undead(u.umonst->data)) {
         You_feel("frightened and %sstunned.", Stunned ? "even more " : "");
         make_stunned((HStun & TIMEOUT) + (long) rnd(30), FALSE);
     } else {
@@ -2102,7 +2102,7 @@ stone_to_flesh_obj(struct obj *obj) /* nonnull */
            non-omnivorous form, regardless of whether it's herbivorous,
            non-eating, or something stranger) */
         if (Role_if(PM_MONK) || !u.uconduct.unvegetarian
-            || !carnivorous(gy.youmonst.data))
+            || !carnivorous(u.umonst->data))
             Norep("You smell the odor of meat.");
         else
             Norep("You smell a delicious smell.");
@@ -2206,14 +2206,14 @@ bhito(struct obj *obj, struct obj *otmp)
             if (obj_shudders(obj)) {
                 boolean cover = ((obj == svl.level.objects[u.ux][u.uy])
                                  && u.uundetected
-                                 && hides_under(gy.youmonst.data));
+                                 && hides_under(u.umonst->data));
 
                 if (cansee(obj->ox, obj->oy))
                     learn_it = TRUE;
                 do_osshock(obj);
                 /* eek - your cover might have been blown */
                 if (cover)
-                    (void) hideunder(&gy.youmonst);
+                    (void) hideunder(u.umonst);
                 break;
             }
             obj = poly_obj(obj, STRANGE_OBJECT);
@@ -2440,7 +2440,7 @@ bhitpile(
 
     /* if hiding underneath an object and zapping up or down, the top item
        is either the only thing hit (up) or is skipped (down) */
-    hidingunder = (zz != 0 && u.uundetected && hides_under(gy.youmonst.data));
+    hidingunder = (zz != 0 && u.uundetected && hides_under(u.umonst->data));
     first = TRUE;
 
     if (obj->otyp == SPE_FORCE_BOLT || obj->otyp == WAN_STRIKING) {
@@ -2629,7 +2629,7 @@ dozap(void)
     struct obj *obj;
     int damage, need_dir;
 
-    if (nohands(gy.youmonst.data)) {
+    if (nohands(u.umonst->data)) {
         You("aren't able to zap anything in your current form.");
         return ECMD_OK;
     }
@@ -2741,7 +2741,7 @@ zapyourself(struct obj *obj, boolean ordinary)
             monstseesu(M_SEEN_ELEC);
             ugolemeffects(AD_ELEC, orig_dmg);
         }
-        (void) destroy_items(&gy.youmonst, AD_ELEC, orig_dmg);
+        (void) destroy_items(u.umonst, AD_ELEC, orig_dmg);
         (void) flashburn((long) rnd(100), TRUE);
         break;
 
@@ -2764,8 +2764,8 @@ zapyourself(struct obj *obj, boolean ordinary)
             monstunseesu(M_SEEN_FIRE);
         }
         burn_away_slime();
-        (void) burnarmor(&gy.youmonst);
-        (void) destroy_items(&gy.youmonst, AD_FIRE, orig_dmg);
+        (void) burnarmor(u.umonst);
+        (void) destroy_items(u.umonst, AD_FIRE, orig_dmg);
         ignite_items(gi.invent);
         break;
 
@@ -2784,7 +2784,7 @@ zapyourself(struct obj *obj, boolean ordinary)
             damage = orig_dmg;
             monstunseesu(M_SEEN_COLD);
         }
-        (void) destroy_items(&gy.youmonst, AD_COLD, orig_dmg);
+        (void) destroy_items(u.umonst, AD_COLD, orig_dmg);
         break;
 
     case WAN_MAGIC_MISSILE:
@@ -2811,7 +2811,7 @@ zapyourself(struct obj *obj, boolean ordinary)
 
     case WAN_CANCELLATION:
     case SPE_CANCELLATION:
-        (void) cancel_monst(&gy.youmonst, obj, TRUE, TRUE, TRUE);
+        (void) cancel_monst(u.umonst, obj, TRUE, TRUE, TRUE);
         break;
 
     case SPE_DRAIN_LIFE:
@@ -2884,7 +2884,7 @@ zapyourself(struct obj *obj, boolean ordinary)
 
     case WAN_DEATH:
     case SPE_FINGER_OF_DEATH:
-        if (nonliving(gy.youmonst.data) || is_demon(gy.youmonst.data)) {
+        if (nonliving(u.umonst->data) || is_demon(u.umonst->data)) {
             pline((obj->otyp == WAN_DEATH)
                       ? "The wand shoots an apparently harmless beam at you."
                       : "You seem no deader than before.");
@@ -2939,16 +2939,16 @@ zapyourself(struct obj *obj, boolean ordinary)
             unpunish();
         }
         /* invent is hit iff hero doesn't escape from a trap */
-        if (!u.utrap || !openholdingtrap(&gy.youmonst, &learn_it)) {
+        if (!u.utrap || !openholdingtrap(u.umonst, &learn_it)) {
             boxlock_invent(obj);
             /* trigger previously escaped trapdoor */
-            (void) openfallingtrap(&gy.youmonst, TRUE, &learn_it);
+            (void) openfallingtrap(u.umonst, TRUE, &learn_it);
         }
         break;
     case WAN_LOCKING:
     case SPE_WIZARD_LOCK:
         /* similar logic to opening; invent is hit iff no trap triggered */
-        if (u.utrap || !closeholdingtrap(&gy.youmonst, &learn_it)) {
+        if (u.utrap || !closeholdingtrap(u.umonst, &learn_it)) {
             boxlock_invent(obj);
         }
         break;
@@ -3032,7 +3032,7 @@ lightdamage(
     const char *how;
     int dmg = amt;
 
-    if (dmg && gy.youmonst.data == &mons[PM_GREMLIN]) {
+    if (dmg && u.umonst->data == &mons[PM_GREMLIN]) {
         /* reduce high values (from destruction of wand with many charges) */
         dmg = rnd(dmg);
         if (dmg > 10)
@@ -3059,7 +3059,7 @@ lightdamage(
 boolean
 flashburn(long duration, boolean via_lightning)
 {
-    if (!resists_blnd(&gy.youmonst)) {
+    if (!resists_blnd(u.umonst)) {
         You(are_blinded_by_the_flash);
         make_blinded(duration, FALSE);
         if (!Blind)
@@ -3072,7 +3072,7 @@ flashburn(long duration, boolean via_lightning)
        if hero is both lightning resistant and blindness resistant, or
        worse, have a single sparkle where the player confuses blindness
        resistance for lightning resistance */
-    if (!via_lightning && resists_blnd_by_arti(&gy.youmonst)) {
+    if (!via_lightning && resists_blnd_by_arti(u.umonst)) {
         shieldeff(u.ux, u.uy);
         return TRUE;
     }
@@ -3153,7 +3153,7 @@ cancel_monst(struct monst *mdef, struct obj *obj, boolean youattack,
     static const char
         writing_vanishes[] = "Some writing vanishes from %s head!",
         your[] = "your"; /* should be extern */
-    boolean youdefend = (mdef == &gy.youmonst);
+    boolean youdefend = (mdef == u.umonst);
 
     if (youdefend ? (!youattack && Antimagic)
                   : resist(mdef, obj->oclass, 0, NOTELL))
@@ -3281,10 +3281,10 @@ zap_updown(struct obj *obj) /* wand or spell, nonnull */
         }
         /* down will release you from bear trap or web */
         if (u.dz > 0 && u.utrap) {
-            (void) openholdingtrap(&gy.youmonst, &disclose);
+            (void) openholdingtrap(u.umonst, &disclose);
             /* down will trigger trapdoor, hole, or [spiked-] pit */
         } else if (u.dz > 0 && !u.utrap) {
-            (void) openfallingtrap(&gy.youmonst, FALSE, &disclose);
+            (void) openfallingtrap(u.umonst, FALSE, &disclose);
         }
         break;
     case WAN_STRIKING:
@@ -3319,7 +3319,7 @@ zap_updown(struct obj *obj) /* wand or spell, nonnull */
             }
             newsym(x, y);
         } else if (u.dz > 0 && ttmp) {
-            if (!striking && closeholdingtrap(&gy.youmonst, &disclose)) {
+            if (!striking && closeholdingtrap(u.umonst, &disclose)) {
                 ; /* now stuck in web or bear trap */
             } else if (striking && ttmp->ttyp == TRAPDOOR) {
                 /* striking transforms trapdoor into hole */
@@ -3394,14 +3394,14 @@ zap_updown(struct obj *obj) /* wand or spell, nonnull */
         /* game flavor: if you're hiding under "something"
          * a zap upward should hit that "something".
          */
-        if (u.uundetected && hides_under(gy.youmonst.data)) {
+        if (u.uundetected && hides_under(u.umonst->data)) {
             int hitit = 0;
             otmp = svl.level.objects[u.ux][u.uy];
 
             if (otmp)
                 hitit = bhito(otmp, obj);
             if (hitit) {
-                (void) hideunder(&gy.youmonst);
+                (void) hideunder(u.umonst);
                 disclose = TRUE;
             }
         }
@@ -3558,7 +3558,7 @@ hit(
     struct monst *mtmp, /* target; for missile, might be hero */
     const char *force)  /* usually either "." or "!" via exclam() */
 {
-    boolean verbosely = (mtmp == &gy.youmonst
+    boolean verbosely = (mtmp == u.umonst
                          || (flags.verbose
                              && (cansee(gb.bhitpos.x, gb.bhitpos.y)
                                  || canspotmon(mtmp) || engulfing_u(mtmp))));
@@ -3982,7 +3982,7 @@ bhit(
            they will be aiming at the monster */
         xyglyph = glyph_at(x, y);
         if (mtmp && (((weapon == THROWN_WEAPON || weapon == KICKED_WEAPON)
-                      && (shade_miss(&gy.youmonst, mtmp, obj, TRUE, TRUE)
+                      && (shade_miss(u.umonst, mtmp, obj, TRUE, TRUE)
                           || (M_AP_TYPE(mtmp) == M_AP_OBJECT
                               && !glyph_is_monster(xyglyph)
                               && !glyph_is_warning(xyglyph)
@@ -4201,7 +4201,7 @@ boomhit(struct obj *obj, int dx, int dy)
         }
         if (u_at(gb.bhitpos.x, gb.bhitpos.y)) { /* ct == 9 */
             if (Fumbling || rn2(20) >= ACURR(A_DEX)) {
-                int dam = dmgval(obj, &gy.youmonst);
+                int dam = dmgval(obj, u.umonst);
 
                 /* we hit ourselves */
                 (void) thitu(10 + obj->spe, Maybe_Half_Phys(dam), &obj,
@@ -4211,7 +4211,7 @@ boomhit(struct obj *obj, int dx, int dy)
             } else { /* we catch it */
                 tmp_at(DISP_END, 0);
                 You("skillfully catch the boomerang.");
-                return &gy.youmonst;
+                return u.umonst;
             }
         }
         tmp_at(gb.bhitpos.x, gb.bhitpos.y);
@@ -4430,9 +4430,9 @@ zhitu(
             monstunseesu(M_SEEN_FIRE);
         }
         burn_away_slime();
-        if (burnarmor(&gy.youmonst)) { /* "body hit" */
+        if (burnarmor(u.umonst)) { /* "body hit" */
             if (!rn2(3))
-                (void) destroy_items(&gy.youmonst, AD_FIRE, orig_dam);
+                (void) destroy_items(u.umonst, AD_FIRE, orig_dam);
             if (!rn2(3))
                 ignite_items(gi.invent);
         }
@@ -4449,7 +4449,7 @@ zhitu(
             monstunseesu(M_SEEN_COLD);
         }
         if (!rn2(3))
-            (void) destroy_items(&gy.youmonst, AD_COLD, orig_dam);
+            (void) destroy_items(u.umonst, AD_COLD, orig_dam);
         break;
     case ZT_SLEEP:
         if (Sleep_resistance) {
@@ -4490,7 +4490,7 @@ zhitu(
                 (void) disintegrate_arm(uarmc);
             if (uarmu)
                 (void) disintegrate_arm(uarmu);
-        } else if (nonliving(gy.youmonst.data) || is_demon(gy.youmonst.data)) {
+        } else if (nonliving(u.umonst->data) || is_demon(u.umonst->data)) {
             shieldeff(sx, sy);
             You("seem unaffected.");
             break;
@@ -4520,7 +4520,7 @@ zhitu(
             monstunseesu(M_SEEN_ELEC);
         }
         if (!rn2(3))
-            (void) destroy_items(&gy.youmonst, AD_ELEC, orig_dam);
+            (void) destroy_items(u.umonst, AD_ELEC, orig_dam);
         break;
     case ZT_POISON_GAS:
         poisoned("blast", A_DEX, "poisoned blast", 15, FALSE);
@@ -4542,7 +4542,7 @@ zhitu(
         if (u.twoweap && !rn2(3))
             acid_damage(uswapwep);
         if (!rn2(6))
-            erode_armor(&gy.youmonst, ERODE_CORRODE);
+            erode_armor(u.umonst, ERODE_CORRODE);
         break;
     }
 
@@ -4891,7 +4891,7 @@ dobuzz(
                             pline("%s disintegrates.", Monnam(mon));
                             pline("%s body reintegrates before your %s!",
                                   s_suffix(Monnam(mon)),
-                                  (eyecount(gy.youmonst.data) == 1)
+                                  (eyecount(u.umonst->data) == 1)
                                       ? body_part(EYE)
                                       : makeplural(body_part(EYE)));
                             pline("%s resurrects!", Monnam(mon));
@@ -5803,7 +5803,7 @@ maybe_destroy_item(
     long i, cnt, quan;
     int dmg, xresist, skip, dindx;
     const char *mult;
-    boolean u_carry = (carrier == &gy.youmonst);
+    boolean u_carry = (carrier == u.umonst);
     boolean vis = !u_carry && canseemon(carrier);
     boolean chargeit = FALSE;
 
@@ -5912,8 +5912,8 @@ maybe_destroy_item(
         }
         if (u_carry) { /* effects that happen only to the player */
             if (osym == POTION_CLASS && dmgtyp != AD_COLD
-                && (!breathless(gy.youmonst.data)
-                    || haseyes(gy.youmonst.data))) {
+                && (!breathless(u.umonst->data)
+                    || haseyes(u.umonst->data))) {
                 potionbreathe(obj);
             }
             if (obj->owornmask) { /* m_useup handles these for monster */
@@ -5977,7 +5977,7 @@ destroy_items(
         boolean deferred;
     } items_to_destroy[MAX_ITEMS_DESTROYED];
     int elig_stacks = 0; /* number of destroyable objects found so far */
-    boolean u_carry = (mon == &gy.youmonst);
+    boolean u_carry = (mon == u.umonst);
     /* this is a struct obj** because we might destroy the first item in it */
     struct obj **objchn = u_carry ? &gi.invent : &mon->minvent;
     int dmg_out = 0; /* damage caused by items getting destroyed */