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nethack/src/worn.c

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/* NetHack 3.7 worn.c $NHDT-Date: 1736530208 2025/01/10 09:30:08 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.116 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Robert Patrick Rankin, 2013. */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h"
staticfn void m_lose_armor(struct monst *, struct obj *, boolean) NONNULLPTRS;
staticfn void clear_bypass(struct obj *) NO_NNARGS;
staticfn void m_dowear_type(struct monst *, long, boolean, boolean)
NONNULLARG1;
staticfn int extra_pref(struct monst *, struct obj *) NONNULLARG1;
static const struct worn {
long w_mask;
struct obj **w_obj;
const char *w_what; /* for failing sanity check's feedback */
} worn[] = { { W_ARM, &uarm, "suit" },
{ W_ARMC, &uarmc, "cloak" },
{ W_ARMH, &uarmh, "helmet" },
{ W_ARMS, &uarms, "shield" },
{ W_ARMG, &uarmg, "gloves" },
{ W_ARMF, &uarmf, "boots" },
{ W_ARMU, &uarmu, "shirt" },
{ W_RINGL, &uleft, "left ring" },
{ W_RINGR, &uright, "right ring" },
{ W_WEP, &uwep, "weapon" },
{ W_SWAPWEP, &uswapwep, "alternate weapon" },
{ W_QUIVER, &uquiver, "quiver" },
{ W_AMUL, &uamul, "amulet" },
{ W_TOOL, &ublindf, "facewear" }, /* blindfold|towel|lenses */
{ W_BALL, &uball, "chained ball" },
{ W_CHAIN, &uchain, "attached chain" },
{ 0, 0, (char *) 0 }
};
/* This only allows for one blocking item per property */
#define w_blocks(o, m) \
((o->otyp == MUMMY_WRAPPING && ((m) & W_ARMC) != 0L) ? INVIS \
: (o->otyp == CORNUTHAUM && ((m) & W_ARMH) != 0L \
&& !Role_if(PM_WIZARD)) ? CLAIRVOYANT \
: (is_art(o, ART_EYES_OF_THE_OVERWORLD) \
&& ((m) & W_TOOL) != 0L) ? BLINDED \
: 0)
/* note: monsters don't have clairvoyance, so dependency on hero's role here
has no significant effect on their use of w_blocks() */
/* calc the range of hero's unblind telepathy */
void
recalc_telepat_range(void)
{
const struct worn *wp;
int nobjs = 0;
for (wp = worn; wp->w_mask; wp++) {
struct obj *oobj = *(wp->w_obj);
if (oobj && objects[oobj->otyp].oc_oprop == TELEPAT)
nobjs++;
}
/* count all artifacts with SPFX_ESP as one */
if (ETelepat & W_ART)
nobjs++;
if (nobjs)
u.unblind_telepat_range = (BOLT_LIM * BOLT_LIM) * nobjs;
else
u.unblind_telepat_range = -1;
}
/* Updated to use the extrinsic and blocked fields. */
void
setworn(struct obj *obj, long mask)
{
const struct worn *wp;
struct obj *oobj;
int p;
if ((mask & (W_ARM | I_SPECIAL)) == (W_ARM | I_SPECIAL)) {
/* restoring saved game; no properties are conferred via skin */
uskin = obj;
/* assert( !uarm ); */
} else {
for (wp = worn; wp->w_mask; wp++) {
if (wp->w_mask & mask) {
oobj = *(wp->w_obj);
if (oobj && !(oobj->owornmask & wp->w_mask))
impossible("Setworn: mask=0x%08lx.", wp->w_mask);
if (oobj) {
if (u.twoweap && (oobj->owornmask & (W_WEP | W_SWAPWEP)))
set_twoweap(FALSE); /* u.twoweap = FALSE */
oobj->owornmask &= ~wp->w_mask;
if (wp->w_mask & ~(W_SWAPWEP | W_QUIVER)) {
/* leave as "x = x <op> y", here and below, for broken
* compilers */
p = objects[oobj->otyp].oc_oprop;
u.uprops[p].extrinsic =
u.uprops[p].extrinsic & ~wp->w_mask;
/* if the hero removed an extrinsic-granting item,
nearby monsters will notice and attempt attacks of
that type again */
monstunseesu_prop(p);
if ((p = w_blocks(oobj, mask)) != 0)
u.uprops[p].blocked &= ~wp->w_mask;
if (oobj->oartifact)
set_artifact_intrinsic(oobj, 0, mask);
}
/* in case wearing or removal is in progress or removal
is pending (via 'A' command for multiple items) */
cancel_doff(oobj, wp->w_mask);
}
*(wp->w_obj) = obj;
if (obj) {
obj->owornmask |= wp->w_mask;
/* Prevent getting/blocking intrinsics from wielding
* potions, through the quiver, etc.
* Allow weapon-tools, too.
* wp_mask should be same as mask at this point.
*/
if (wp->w_mask & ~(W_SWAPWEP | W_QUIVER)) {
if (obj->oclass == WEAPON_CLASS || is_weptool(obj)
|| mask != W_WEP) {
p = objects[obj->otyp].oc_oprop;
u.uprops[p].extrinsic =
u.uprops[p].extrinsic | wp->w_mask;
if ((p = w_blocks(obj, mask)) != 0)
u.uprops[p].blocked |= wp->w_mask;
}
if (obj->oartifact)
set_artifact_intrinsic(obj, 1, mask);
}
}
}
}
if (obj && (obj->owornmask & W_ARMOR) != 0L)
u.uroleplay.nudist = FALSE;
/* tux -> tuxedo -> "monkey suit" -> monk's suit */
iflags.tux_penalty = (uarm && Role_if(PM_MONK) && gu.urole.spelarmr);
}
update_inventory();
recalc_telepat_range();
}
/* called e.g. when obj is destroyed */
/* Updated to use the extrinsic and blocked fields. */
void
setnotworn(struct obj *obj)
{
const struct worn *wp;
int p;
if (!obj)
return;
if (u.twoweap && (obj == uwep || obj == uswapwep))
set_twoweap(FALSE); /* u.twoweap = FALSE */
for (wp = worn; wp->w_mask; wp++)
if (obj == *(wp->w_obj)) {
/* in case wearing or removal is in progress or removal
is pending (via 'A' command for multiple items) */
cancel_doff(obj, wp->w_mask);
*(wp->w_obj) = (struct obj *) 0;
p = objects[obj->otyp].oc_oprop;
u.uprops[p].extrinsic = u.uprops[p].extrinsic & ~wp->w_mask;
monstunseesu_prop(p); /* remove this extrinsic from seenres */
obj->owornmask &= ~wp->w_mask;
if (obj->oartifact)
set_artifact_intrinsic(obj, 0, wp->w_mask);
if ((p = w_blocks(obj, wp->w_mask)) != 0)
u.uprops[p].blocked &= ~wp->w_mask;
}
if (!uarm)
iflags.tux_penalty = FALSE;
update_inventory();
recalc_telepat_range();
}
/* called when saving with FREEING flag set has just discarded inventory */
void
allunworn(void)
{
const struct worn *wp;
u.twoweap = 0; /* uwep and uswapwep are going away */
/* remove stale pointers; called after the objects have been freed
(without first being unworn) while saving invent during game save;
note: uball and uchain might not be freed yet but we clear them
here anyway (savegamestate() and its callers deal with them) */
for (wp = worn; wp->w_mask; wp++) {
/* object is already gone so we don't/can't update is owornmask */
*(wp->w_obj) = (struct obj *) 0;
}
}
/* return item worn in slot indicated by wornmask; needed by poly_obj() */
struct obj *
wearmask_to_obj(long wornmask)
{
const struct worn *wp;
for (wp = worn; wp->w_mask; wp++)
if (wp->w_mask & wornmask)
return *wp->w_obj;
return (struct obj *) 0;
}
/* return a bitmask of the equipment slot(s) a given item might be worn in */
long
wearslot(struct obj *obj)
{
int otyp = obj->otyp;
/* practically any item can be wielded or quivered; it's up to
our caller to handle such things--we assume "normal" usage */
long res = 0L; /* default: can't be worn anywhere */
switch (obj->oclass) {
case AMULET_CLASS:
res = W_AMUL; /* WORN_AMUL */
break;
case RING_CLASS:
res = W_RINGL | W_RINGR; /* W_RING, BOTH_SIDES */
break;
case ARMOR_CLASS:
switch (objects[otyp].oc_armcat) {
case ARM_SUIT:
res = W_ARM;
break; /* WORN_ARMOR */
case ARM_SHIELD:
res = W_ARMS;
break; /* WORN_SHIELD */
case ARM_HELM:
res = W_ARMH;
break; /* WORN_HELMET */
case ARM_GLOVES:
res = W_ARMG;
break; /* WORN_GLOVES */
case ARM_BOOTS:
res = W_ARMF;
break; /* WORN_BOOTS */
case ARM_CLOAK:
res = W_ARMC;
break; /* WORN_CLOAK */
case ARM_SHIRT:
res = W_ARMU;
break; /* WORN_SHIRT */
}
break;
case WEAPON_CLASS:
res = W_WEP | W_SWAPWEP;
if (objects[otyp].oc_merge)
res |= W_QUIVER;
break;
case TOOL_CLASS:
if (otyp == BLINDFOLD || otyp == TOWEL || otyp == LENSES)
res = W_TOOL; /* WORN_BLINDF */
else if (is_weptool(obj) || otyp == TIN_OPENER)
res = W_WEP | W_SWAPWEP;
else if (otyp == SADDLE)
res = W_SADDLE;
break;
case FOOD_CLASS:
if (obj->otyp == MEAT_RING)
res = W_RINGL | W_RINGR;
break;
case GEM_CLASS:
res = W_QUIVER;
break;
case BALL_CLASS:
res = W_BALL;
break;
case CHAIN_CLASS:
res = W_CHAIN;
break;
default:
break;
}
return res;
}
/* for 'sanity_check' option, called by you_sanity_check() */
void
check_wornmask_slots(void)
{
/* we'll skip ball and chain here--they warrant separate sanity check */
#define IGNORE_SLOTS (W_ART | W_ARTI | W_SADDLE | W_BALL| W_CHAIN)
char whybuf[BUFSZ];
const struct worn *wp;
struct obj *o, *otmp;
long m;
for (wp = worn; wp->w_mask; wp++) {
m = wp->w_mask;
if ((m & IGNORE_SLOTS) != 0L && (m & ~IGNORE_SLOTS) == 0L)
continue;
if ((o = *wp->w_obj) != 0) {
whybuf[0] = '\0';
/* slot pointer (uarm, uwep, &c) is populated; check that object
is in inventory and has the relevant owornmask bit set */
for (otmp = gi.invent; otmp; otmp = otmp->nobj)
if (otmp == o)
break;
if (!otmp)
Sprintf(whybuf, "%s (%s) not found in invent",
wp->w_what, fmt_ptr(o));
else if ((o->owornmask & m) == 0L)
Sprintf(whybuf, "%s bit not set in owornmask [0x%08lx]",
wp->w_what, o->owornmask);
else if ((o->owornmask & ~(m | IGNORE_SLOTS)) != 0L)
Sprintf(whybuf, "%s wrong bit set in owornmask [0x%08lx]",
wp->w_what, o->owornmask);
if (whybuf[0])
impossible("Worn-slot insanity: %s.", whybuf);
} /* o != NULL */
/* check whether any item other than the one in the slot pointer
claims to be worn/wielded in this slot; make this test whether
'o' is Null or not; [sanity_check_worn(mkobj.c) for object by
object checking will most likely have already caught this] */
for (otmp = gi.invent; otmp; otmp = otmp->nobj) {
if (otmp != o && (otmp->owornmask & m) != 0L
/* embedded scales owornmask is W_ARM|I_SPECIAL so would
give a false complaint about item other than uarm having
W_ARM bit set if we didn't screen it out here */
&& (m != W_ARM || otmp != uskin
|| (otmp->owornmask & I_SPECIAL) == 0L)) {
Sprintf(whybuf, "%s [0x%08lx] has %s mask 0x%08lx bit set",
simpleonames(otmp), otmp->owornmask, wp->w_what, m);
impossible("Worn-slot insanity: %s.", whybuf);
}
}
} /* for wp in worn[] */
#ifdef EXTRA_SANITY_CHECKS
if (uskin) {
const char *what = "embedded scales";
o = uskin;
m = W_ARM | I_SPECIAL;
whybuf[0] = '\0';
for (otmp = gi.invent; otmp; otmp = otmp->nobj)
if (otmp == o)
break;
if (!otmp)
Sprintf(whybuf, "%s (%s) not found in invent",
what, fmt_ptr(o));
else if ((o->owornmask & m) != m)
Sprintf(whybuf, "%s bits not set in owornmask [0x%08lx]",
what, o->owornmask);
else if ((o->owornmask & ~(m | IGNORE_SLOTS)) != 0L)
Sprintf(whybuf, "%s wrong bit set in owornmask [0x%08lx]",
what, o->owornmask);
else if (!Is_dragon_scales(o))
Sprintf(whybuf, "%s (%s) %s not dragon scales",
what, simpleonames(o), otense(o, "are"));
else if (Dragon_scales_to_pm(o) != &mons[u.umonnum])
Sprintf(whybuf, "%s, hero is not %s",
what, an(mons[u.umonnum].pmnames[NEUTRAL]));
if (whybuf[0])
impossible("Worn-slot insanity: %s.", whybuf);
} /* uskin */
#endif /* EXTRA_SANITY_CHECKS */
#ifdef EXTRA_SANITY_CHECKS
/* dual wielding: not a slot but lots of things to verify */
if (u.twoweap) {
const char *why = NULL;
if (!uwep || !uswapwep) {
Sprintf(whybuf, "without %s%s%s",
!uwep ? "uwep" : "",
(!uwep && !uswapwep) ? " and without " : "",
!uswapwep ? "uswapwep" : "");
why = whybuf;
} else if (uarms)
why = "while wearing shield";
else if (uwep->oclass != WEAPON_CLASS && !is_weptool(uwep))
why = "uwep is not a weapon";
else if (is_launcher(uwep) || is_ammo(uwep) || is_missile(uwep))
why = "uwep is not a melee weapon";
else if (bimanual(uwep))
why = "uwep is two-handed";
else if (uswapwep->oclass != WEAPON_CLASS && !is_weptool(uswapwep))
why = "uswapwep is not a weapon";
else if (is_launcher(uswapwep) || is_ammo(uswapwep)
|| is_missile(uswapwep))
why = "uswapwep is not a melee weapon";
else if (bimanual(uswapwep))
why = "uswapwep is two-handed";
else if (!could_twoweap(gy.youmonst.data))
why = "without two weapon attacks";
if (why)
impossible("Two-weapon insanity: %s.", why);
}
#endif /* EXTRA_SANITY_CHECKS */
return;
#undef IGNORE_SLOTS
} /* check_wornmask_slots() */
void
mon_set_minvis(struct monst *mon)
{
mon->perminvis = 1;
if (!mon->invis_blkd) {
mon->minvis = 1;
newsym(mon->mx, mon->my); /* make it disappear */
if (mon->wormno)
see_wsegs(mon); /* and any tail too */
}
}
void
mon_adjust_speed(
struct monst *mon,
int adjust, /* positive => increase speed, negative => decrease */
struct obj *obj) /* item to make known if effect can be seen */
{
struct obj *otmp;
boolean give_msg = !gi.in_mklev, petrify = FALSE;
unsigned int oldspeed = mon->mspeed;
switch (adjust) {
case 2:
mon->permspeed = MFAST;
give_msg = FALSE; /* special case monster creation */
break;
case 1:
if (mon->permspeed == MSLOW)
mon->permspeed = 0;
else
mon->permspeed = MFAST;
break;
case 0: /* just check for worn speed boots */
break;
case -1:
if (mon->permspeed == MFAST)
mon->permspeed = 0;
else
mon->permspeed = MSLOW;
break;
case -2:
mon->permspeed = MSLOW;
give_msg = FALSE; /* (not currently used) */
break;
case -3: /* petrification */
/* take away intrinsic speed but don't reduce normal speed */
if (mon->permspeed == MFAST)
mon->permspeed = 0;
petrify = TRUE;
break;
case -4: /* green slime */
if (mon->permspeed == MFAST)
mon->permspeed = 0;
give_msg = FALSE;
break;
}
for (otmp = mon->minvent; otmp; otmp = otmp->nobj)
if (otmp->owornmask && objects[otmp->otyp].oc_oprop == FAST)
break;
if (otmp) /* speed boots */
mon->mspeed = MFAST;
else
mon->mspeed = mon->permspeed;
/* no message if monster is immobile (temp or perm) or unseen */
if (give_msg && (mon->mspeed != oldspeed || petrify) && mon->data->mmove
&& !(mon->mfrozen || mon->msleeping) && canseemon(mon)) {
/* fast to slow (skipping intermediate state) or vice versa */
const char *howmuch =
(mon->mspeed + oldspeed == MFAST + MSLOW) ? "much " : "";
if (petrify) {
/* mimic the player's petrification countdown; "slowing down"
even if fast movement rate retained via worn speed boots */
if (flags.verbose)
pline_mon(mon, "%s is slowing down.", Monnam(mon));
} else if (adjust > 0 || mon->mspeed == MFAST)
pline_mon(mon, "%s is suddenly moving %sfaster.",
Monnam(mon), howmuch);
else
pline_mon(mon, "%s seems to be moving %sslower.",
Monnam(mon), howmuch);
/* might discover an object if we see the speed change happen */
if (obj != 0)
learnwand(obj);
}
}
/* alchemy smock confers two properties, poison and acid resistance
but objects[ALCHEMY_SMOCK].oc_oprop can only describe one of them;
if it is poison resistance, alternate property is acid resistance;
if someone changes it to acid resistance, alt becomes poison resist;
if someone changes it to hallucination resistance, all bets are off
[TODO: handle alternate properties conferred by dragon scales/mail] */
#define altprop(o) \
(((o)->otyp == ALCHEMY_SMOCK) \
? (POISON_RES + ACID_RES - objects[(o)->otyp].oc_oprop) \
: 0)
/* armor put on or taken off; might be magical variety */
void
update_mon_extrinsics(
struct monst *mon,
struct obj *obj, /* armor being worn or taken off */
boolean on,
boolean silently)
{
int unseen;
uchar mask;
struct obj *otmp;
int which = (int) objects[obj->otyp].oc_oprop,
altwhich = altprop(obj);
unseen = !canseemon(mon);
if (!which && !altwhich)
goto maybe_blocks;
again:
if (on) {
switch (which) {
case INVIS:
mon->minvis = !mon->invis_blkd;
break;
case FAST: {
boolean save_in_mklev = gi.in_mklev;
if (silently)
gi.in_mklev = TRUE;
mon_adjust_speed(mon, 0, obj);
gi.in_mklev = save_in_mklev;
break;
}
/* properties handled elsewhere */
case ANTIMAGIC:
case REFLECTING:
case PROTECTION:
break;
/* properties which have no effect for monsters */
case CLAIRVOYANT:
case STEALTH:
case TELEPAT:
break;
/* properties which should have an effect but aren't implemented */
case LEVITATION:
case FLYING:
case WWALKING:
break;
/* properties which maybe should have an effect but don't */
case DISPLACED:
case FUMBLING:
case JUMPING:
break;
default:
mon->mextrinsics |= (unsigned short) res_to_mr(which);
break;
}
} else { /* off */
switch (which) {
case INVIS:
mon->minvis = mon->perminvis;
break;
case FAST: {
boolean save_in_mklev = gi.in_mklev;
if (silently)
gi.in_mklev = TRUE;
mon_adjust_speed(mon, 0, obj);
gi.in_mklev = save_in_mklev;
break;
}
case FIRE_RES:
case COLD_RES:
case SLEEP_RES:
case DISINT_RES:
case SHOCK_RES:
case POISON_RES:
case ACID_RES:
case STONE_RES:
/*
* Update monster's extrinsics (for worn objects only;
* 'obj' itself might still be worn or already unworn).
*
* If an alchemy smock is being taken off, this code will
* be run twice (via 'goto again') and other worn gear
* gets tested for conferring poison resistance on the
* first pass and acid resistance on the second.
*
* If some other item is being taken off, there will be
* only one pass but a worn alchemy smock will be an
* alternate source for either of those two resistances.
*/
mask = res_to_mr(which);
for (otmp = mon->minvent; otmp; otmp = otmp->nobj) {
if (otmp == obj || !otmp->owornmask)
continue;
if ((int) objects[otmp->otyp].oc_oprop == which)
break;
/* check whether 'otmp' confers target property as an extra
one rather than as the one specified for it in objects[] */
if (altprop(otmp) == which)
break;
}
if (!otmp)
mon->mextrinsics &= ~((unsigned short) mask);
break;
default:
break;
}
}
/* worn alchemy smock/apron confers both poison resistance and acid
resistance to the hero so do likewise for monster who wears one */
if (altwhich && which != altwhich) {
which = altwhich;
goto again;
}
maybe_blocks:
/* obj->owornmask has been cleared by this point, so we can't use it.
However, since monsters don't wield armor, we don't have to guard
against that and can get away with a blanket worn-mask value. */
switch (w_blocks(obj, ~0L)) {
case INVIS:
mon->invis_blkd = on ? 1 : 0;
mon->minvis = on ? 0 : mon->perminvis;
break;
default:
break;
}
if (!on && mon == u.usteed && obj->otyp == SADDLE)
dismount_steed(DISMOUNT_FELL);
/* if couldn't see it but now can, or vice versa, update display */
if (!silently && (unseen ^ !canseemon(mon)))
newsym(mon->mx, mon->my);
}
#undef altprop
int
find_mac(struct monst *mon)
{
struct obj *obj;
int base = mon->data->ac;
long mwflags = mon->misc_worn_check;
for (obj = mon->minvent; obj; obj = obj->nobj) {
if (obj->owornmask & mwflags) {
if (obj->otyp == AMULET_OF_GUARDING)
base -= 2; /* fixed amount, not impacted by erosion */
else
base -= ARM_BONUS(obj);
/* since ARM_BONUS is positive, subtracting it increases AC */
}
}
/* same cap as for hero [find_ac(do_wear.c)] */
if (abs(base) > AC_MAX)
base = sgn(base) * AC_MAX;
return base;
}
/*
* weapons are handled separately;
* rings and eyewear aren't used by monsters
*/
/* Wear the best object of each type that the monster has. During creation,
* the monster can put everything on at once; otherwise, wearing takes time.
* This doesn't affect monster searching for objects--a monster may very well
* search for objects it would not want to wear, because we don't want to
* check which_armor() each round.
*
* We'll let monsters put on shirts and/or suits under worn cloaks, but
* not shirts under worn suits. This is somewhat arbitrary, but it's
* too tedious to have them remove and later replace outer garments,
* and preventing suits under cloaks makes it a little bit too easy for
* players to influence what gets worn. Putting on a shirt underneath
* already worn body armor is too obviously buggy...
*/
void
m_dowear(struct monst *mon, boolean creation)
{
boolean can_wear_armor;
#define RACE_EXCEPTION TRUE
/* Note the restrictions here are the same as in dowear in do_wear.c
* except for the additional restriction on intelligence. (Players
* are always intelligent, even if polymorphed).
*/
if (verysmall(mon->data) || nohands(mon->data) || is_animal(mon->data))
return;
/* give mummies a chance to wear their wrappings
* and let skeletons wear their initial armor */
if (mindless(mon->data)
&& (!creation || (mon->data->mlet != S_MUMMY
&& mon->data != &mons[PM_SKELETON])))
return;
m_dowear_type(mon, W_AMUL, creation, FALSE);
can_wear_armor = !cantweararm(mon->data); /* for suit, cloak, shirt */
/* can't put on shirt if already wearing suit */
if (can_wear_armor && !(mon->misc_worn_check & W_ARM))
m_dowear_type(mon, W_ARMU, creation, FALSE);
/* WrappingAllowed() makes any size between small and huge eligible;
treating small as a special case allows hobbits, gnomes, and
kobolds to wear all cloaks; large and huge allows giants and such
to wear mummy wrappings but not other cloaks */
if (can_wear_armor || WrappingAllowed(mon->data))
m_dowear_type(mon, W_ARMC, creation, FALSE);
m_dowear_type(mon, W_ARMH, creation, FALSE);
if (!MON_WEP(mon) || !bimanual(MON_WEP(mon)))
m_dowear_type(mon, W_ARMS, creation, FALSE);
m_dowear_type(mon, W_ARMG, creation, FALSE);
if (!slithy(mon->data) && mon->data->mlet != S_CENTAUR)
m_dowear_type(mon, W_ARMF, creation, FALSE);
if (can_wear_armor)
m_dowear_type(mon, W_ARM, creation, FALSE);
else
m_dowear_type(mon, W_ARM, creation, RACE_EXCEPTION);
}
staticfn void
m_dowear_type(
struct monst *mon,
long flag, /* wornmask value */
boolean creation, /* no wear messages when mon is being created */
boolean racialexception) /* small monsters that are allowed for player
* races (gnomes) can wear suits */
{
struct obj *old, *best, *obj;
long oldmask = 0L;
int m_delay = 0;
int sawmon = canseemon(mon), sawloc = cansee(mon->mx, mon->my);
boolean autocurse;
char nambuf[BUFSZ];
if (mon->mfrozen)
return; /* probably putting previous item on */
/* Get a copy of monster's name before altering its visibility */
Strcpy(nambuf, See_invisible ? Monnam(mon) : mon_nam(mon));
old = which_armor(mon, flag);
if (old && old->cursed)
return;
if (old && flag == W_AMUL && old->otyp != AMULET_OF_GUARDING)
return; /* no amulet better than life-saving or reflection */
best = old;
for (obj = mon->minvent; obj; obj = obj->nobj) {
switch (flag) {
case W_AMUL:
if (obj->oclass != AMULET_CLASS
|| (obj->otyp != AMULET_OF_LIFE_SAVING
&& obj->otyp != AMULET_OF_REFLECTION
&& obj->otyp != AMULET_OF_GUARDING))
continue;
/* for 'best' to be non-Null, it must be an amulet of guarding;
life-saving and reflection don't get here due to early return
and other amulets of guarding can't be any better */
if (!best || obj->otyp != AMULET_OF_GUARDING) {
best = obj;
if (best->otyp != AMULET_OF_GUARDING)
goto outer_break; /* life-saving or reflection; use it */
}
continue; /* skip post-switch armor handling */
case W_ARMU:
if (!is_shirt(obj))
continue;
break;
case W_ARMC:
if (!is_cloak(obj))
continue;
/* mummy wrapping is only cloak allowed when bigger than human */
if (mon->data->msize > MZ_HUMAN && obj->otyp != MUMMY_WRAPPING)
continue;
/* avoid mummy wrapping if it will allow hero to see mon (unless
this is a new mummy; an invisible one is feasible via ^G) */
if (mon->minvis && w_blocks(obj, W_ARMC) == INVIS
&& !See_invisible && !creation)
continue;
break;
case W_ARMH:
if (!is_helmet(obj))
continue;
/* changing alignment is not implemented for monsters;
priests and minions could change alignment but wouldn't
want to, so they reject helms of opposite alignment */
if (obj->otyp == HELM_OF_OPPOSITE_ALIGNMENT
&& (mon->ispriest || mon->isminion))
continue;
/* (flimsy exception matches polyself handling) */
if (has_horns(mon->data) && !is_flimsy(obj))
continue;
break;
case W_ARMS:
if (!is_shield(obj))
continue;
break;
case W_ARMG:
if (!is_gloves(obj))
continue;
break;
case W_ARMF:
if (!is_boots(obj))
continue;
break;
case W_ARM:
if (!is_suit(obj))
continue;
if (racialexception && (racial_exception(mon, obj) < 1))
continue;
break;
}
if (obj->owornmask)
continue;
/* I'd like to define a VISIBLE_ARM_BONUS which doesn't assume the
* monster knows obj->spe, but if I did that, a monster would keep
* switching forever between two -2 caps since when it took off one
* it would forget spe and once again think the object is better
* than what it already has.
*/
if (best && (ARM_BONUS(best) + extra_pref(mon, best)
>= ARM_BONUS(obj) + extra_pref(mon, obj)))
continue;
best = obj;
}
outer_break:
if (!best || best == old)
return;
/* same auto-cursing behavior as for hero */
autocurse = ((best->otyp == HELM_OF_OPPOSITE_ALIGNMENT
|| best->otyp == DUNCE_CAP) && !best->cursed);
/* if wearing a cloak, account for the time spent removing
and re-wearing it when putting on a suit or shirt */
if ((flag == W_ARM || flag == W_ARMU) && (mon->misc_worn_check & W_ARMC))
m_delay += 2;
/* when upgrading a piece of armor, account for time spent
taking off current one */
if (old) {
m_delay += objects[old->otyp].oc_delay;
oldmask = old->owornmask; /* needed later by artifact_light() */
old->owornmask = 0L; /* avoid doname() showing "(being worn)" */
}
if (!creation) {
if (sawmon) {
char buf[BUFSZ], oldarm[BUFSZ], newarm[BUFSZ + sizeof "another "];
/* "<Mon> [removes <oldarm> and ]puts on <newarm>."
uses accessory verbs for armor but we can live with that */
if (old) {
Strcpy(oldarm, distant_name(old, doname));
Snprintf(buf, sizeof buf, " removes %s and", oldarm);
} else {
buf[0] = oldarm[0] = '\0';
}
Strcpy(newarm, distant_name(best, doname));
/* a monster will swap an item of the same type as the one it
is replacing when the enchantment is better;
if newarm and oldarm have identical descriptions, substitute
"another <newarm>" for "a|an <newarm>" */
if (!strcmpi(newarm, oldarm)) {
/* size of newarm[] has been overallocated to guarantee
enough room to insert "another " */
if (!strncmpi(newarm, "a ", 2))
(void) strsubst(newarm, "a ", "another ");
else if (!strncmpi(newarm, "an ", 3))
(void) strsubst(newarm, "an ", "another ");
newarm[BUFSZ - 1] = '\0';
}
pline_mon(mon, "%s%s puts on %s.", Monnam(mon), buf, newarm);
if (autocurse)
pline("%s %s %s %s for a moment.", s_suffix(Monnam(mon)),
simpleonames(best), otense(best, "glow"),
hcolor(NH_BLACK));
} /* can see it */
m_delay += objects[best->otyp].oc_delay;
mon->mfrozen = m_delay;
if (mon->mfrozen)
mon->mcanmove = 0;
}
if (old) {
update_mon_extrinsics(mon, old, FALSE, creation);
/* owornmask was cleared above but artifact_light() expects it */
old->owornmask = oldmask;
if (old->lamplit && artifact_light(old))
end_burn(old, FALSE);
old->owornmask = 0L;
}
mon->misc_worn_check |= flag;
best->owornmask |= flag;
if (autocurse)
curse(best);
if (artifact_light(best) && !best->lamplit) {
begin_burn(best, FALSE);
vision_recalc(1);
if (!creation && best->lamplit && cansee(mon->mx, mon->my)) {
const char *adesc = arti_light_description(best);
if (sawmon) /* could already see monster */
pline("%s %s to shine %s.", Yname2(best),
otense(best, "begin"), adesc);
else if (canseemon(mon)) /* didn't see it until new light */
pline("%s %s shining %s.", Yname2(best),
otense(best, "are"), adesc);
else if (sawloc) /* saw location but not invisible monster */
pline("%s begins to shine %s.", Something, adesc);
else /* didn't see location until new light */
pline("%s is shining %s.", Something, adesc);
}
}
update_mon_extrinsics(mon, best, TRUE, creation);
/* if couldn't see it but now can, or vice versa, */
if (!creation && (sawmon ^ canseemon(mon))) {
if (mon->minvis && !See_invisible) {
pline("Suddenly you cannot see %s.", nambuf);
makeknown(best->otyp);
/* } else if (!mon->minvis) {
* pline("%s suddenly appears!", Amonnam(mon)); */
}
}
}
#undef RACE_EXCEPTION
struct obj *
which_armor(struct monst *mon, long flag)
{
if (mon == &gy.youmonst) {
switch (flag) {
case W_ARM:
return uarm;
case W_ARMC:
return uarmc;
case W_ARMH:
return uarmh;
case W_ARMS:
return uarms;
case W_ARMG:
return uarmg;
case W_ARMF:
return uarmf;
case W_ARMU:
return uarmu;
default:
impossible("bad flag in which_armor");
return 0;
}
} else {
struct obj *obj;
for (obj = mon->minvent; obj; obj = obj->nobj)
if (obj->owornmask & flag)
return obj;
return (struct obj *) 0;
}
}
/* remove an item of armor and then drop it */
staticfn void
m_lose_armor(
struct monst *mon,
struct obj *obj,
boolean polyspot)
{
extract_from_minvent(mon, obj, TRUE, FALSE);
place_object(obj, mon->mx, mon->my);
if (polyspot)
bypass_obj(obj);
/* call stackobj() if we ever drop anything that can merge */
newsym(mon->mx, mon->my);
}
/* clear bypass bits for an object chain, plus contents if applicable */
staticfn void
clear_bypass(struct obj *objchn)
{
struct obj *o;
for (o = objchn; o; o = o->nobj) {
o->bypass = 0;
if (Has_contents(o))
clear_bypass(o->cobj);
}
}
/* all objects with their bypass bit set should now be reset to normal;
this can be a relatively expensive operation so is only called if
svc.context.bypasses is set */
void
clear_bypasses(void)
{
struct monst *mtmp;
/*
* 'Object' bypass is also used for one monster function:
* polymorph control of long worms. Activated via setting
* svc.context.bypasses even if no specific object has been
* bypassed.
*/
clear_bypass(fobj);
clear_bypass(gi.invent);
clear_bypass(gm.migrating_objs);
clear_bypass(svl.level.buriedobjlist);
clear_bypass(gb.billobjs);
clear_bypass(go.objs_deleted);
for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {
if (DEADMONSTER(mtmp))
continue;
clear_bypass(mtmp->minvent);
/* long worm created by polymorph has mon->mextra->mcorpsenm set
to PM_LONG_WORM to flag it as not being subject to further
polymorph (so polymorph zap won't hit monster to transform it
into a long worm, then hit that worm's tail and transform it
again on same zap); clearing mcorpsenm reverts worm to normal */
if (mtmp->data == &mons[PM_LONG_WORM] && has_mcorpsenm(mtmp))
MCORPSENM(mtmp) = NON_PM;
}
for (mtmp = gm.migrating_mons; mtmp; mtmp = mtmp->nmon) {
clear_bypass(mtmp->minvent);
/* no MCORPSENM(mtmp)==PM_LONG_WORM check here; long worms can't
be just created by polymorph and migrating at the same time */
}
/* this is a no-op since mydogs is only non-Null during level change or
final ascension and we aren't called at those times, but be thorough */
for (mtmp = gm.mydogs; mtmp; mtmp = mtmp->nmon)
clear_bypass(mtmp->minvent);
/* ball and chain can be "floating", not on any object chain (when
hero is swallowed by an engulfing monster, for instance) */
if (uball)
uball->bypass = 0;
if (uchain)
uchain->bypass = 0;
svc.context.bypasses = FALSE;
}
void
bypass_obj(struct obj *obj)
{
obj->bypass = 1;
svc.context.bypasses = TRUE;
}
/* set or clear the bypass bit in a list of objects */
void
bypass_objlist(
struct obj *objchain,
boolean on) /* TRUE => set, FALSE => clear */
{
if (on && objchain)
svc.context.bypasses = TRUE;
while (objchain) {
objchain->bypass = on ? 1 : 0;
objchain = objchain->nobj;
}
}
/* return the first object without its bypass bit set; set that bit
before returning so that successive calls will find further objects */
struct obj *
nxt_unbypassed_obj(struct obj *objchain)
{
while (objchain) {
if (!objchain->bypass) {
bypass_obj(objchain);
break;
}
objchain = objchain->nobj;
}
return objchain;
}
/* like nxt_unbypassed_obj() but operates on sortloot_item array rather
than an object linked list; the array contains obj==Null terminator;
there's an added complication that the array may have stale pointers
for deleted objects (see Multiple-Drop case in askchain(invent.c)) */
struct obj *
nxt_unbypassed_loot(Loot *lootarray, struct obj *listhead)
{
struct obj *o, *obj;
while ((obj = lootarray->obj) != 0) {
for (o = listhead; o; o = o->nobj)
if (o == obj)
break;
if (o && !obj->bypass) {
bypass_obj(obj);
break;
}
++lootarray;
}
return obj;
}
void
mon_break_armor(struct monst *mon, boolean polyspot)
{
struct obj *otmp;
struct permonst *mdat = mon->data;
boolean vis = cansee(mon->mx, mon->my),
handless_or_tiny = (nohands(mdat) || verysmall(mdat)),
noride = FALSE;
const char *pronoun = mhim(mon), *ppronoun = mhis(mon);
if (breakarm(mdat)) {
if ((otmp = which_armor(mon, W_ARM)) != 0) {
if ((Is_dragon_scales(otmp) && mdat == Dragon_scales_to_pm(otmp))
|| (Is_dragon_mail(otmp) && mdat == Dragon_mail_to_pm(otmp))) {
; /* no message here;
"the dragon merges with his scaly armor" is odd
and the monster's previous form is already gone */
} else {
Soundeffect(se_cracking_sound, 100);
if (vis)
pline_mon(mon, "%s breaks out of %s armor!",
Monnam(mon), ppronoun);
else
You_hear("a cracking sound.");
}
m_useup(mon, otmp);
}
if ((otmp = which_armor(mon, W_ARMC)) != 0
/* mummy wrapping adapts to small and very big sizes */
&& (otmp->otyp != MUMMY_WRAPPING || !WrappingAllowed(mdat))) {
if (otmp->oartifact) {
if (vis)
pline_mon(mon, "%s %s falls off!", s_suffix(Monnam(mon)),
cloak_simple_name(otmp));
m_lose_armor(mon, otmp, polyspot);
} else {
Soundeffect(se_ripping_sound, 100);
if (vis)
pline_mon(mon, "%s %s tears apart!", s_suffix(Monnam(mon)),
cloak_simple_name(otmp));
else
You_hear("a ripping sound.");
m_useup(mon, otmp);
}
}
if ((otmp = which_armor(mon, W_ARMU)) != 0) {
if (vis)
pline_mon(mon, "%s shirt rips to shreds!",
s_suffix(Monnam(mon)));
else
You_hear("a ripping sound.");
m_useup(mon, otmp);
}
} else if (sliparm(mdat)) {
/* sliparm checks whirly, noncorporeal, and small or under */
boolean passes_thru_clothes = !(mdat->msize <= MZ_SMALL);
if ((otmp = which_armor(mon, W_ARM)) != 0) {
Soundeffect(se_thud, 50);
if (vis)
pline_mon(mon, "%s armor falls around %s!",
s_suffix(Monnam(mon)), pronoun);
else
You_hear("a thud.");
m_lose_armor(mon, otmp, polyspot);
}
if ((otmp = which_armor(mon, W_ARMC)) != 0
/* mummy wrapping adapts to small and very big sizes */
&& (otmp->otyp != MUMMY_WRAPPING || !WrappingAllowed(mdat))) {
if (vis) {
if (is_whirly(mon->data))
pline_mon(mon, "%s %s falls, unsupported!",
s_suffix(Monnam(mon)), cloak_simple_name(otmp));
else
pline_mon(mon, "%s shrinks out of %s %s!",
Monnam(mon), ppronoun,
cloak_simple_name(otmp));
}
m_lose_armor(mon, otmp, polyspot);
}
if ((otmp = which_armor(mon, W_ARMU)) != 0) {
if (vis) {
if (passes_thru_clothes)
pline_mon(mon, "%s seeps right through %s shirt!",
Monnam(mon), ppronoun);
else
pline_mon(mon, "%s becomes much too small for %s shirt!",
Monnam(mon), ppronoun);
}
m_lose_armor(mon, otmp, polyspot);
}
}
if (handless_or_tiny) {
/* [caller needs to handle weapon checks] */
if ((otmp = which_armor(mon, W_ARMG)) != 0) {
if (vis)
pline_mon(mon, "%s drops %s gloves%s!",
Monnam(mon), ppronoun,
MON_WEP(mon) ? " and weapon" : "");
m_lose_armor(mon, otmp, polyspot);
}
if ((otmp = which_armor(mon, W_ARMS)) != 0) {
Soundeffect(se_clank, 50);
if (vis)
pline_mon(mon, "%s can no longer hold %s shield!",
Monnam(mon), ppronoun);
else
You_hear("a clank.");
m_lose_armor(mon, otmp, polyspot);
}
}
if (handless_or_tiny || has_horns(mdat)) {
if ((otmp = which_armor(mon, W_ARMH)) != 0
/* flimsy test for horns matches polyself handling */
&& (handless_or_tiny || !is_flimsy(otmp))) {
if (vis)
pline_mon(mon, "%s helmet falls to the %s!",
s_suffix(Monnam(mon)), surface(mon->mx, mon->my));
else
You_hear("a clank.");
m_lose_armor(mon, otmp, polyspot);
}
}
if (handless_or_tiny || slithy(mdat) || mdat->mlet == S_CENTAUR) {
if ((otmp = which_armor(mon, W_ARMF)) != 0) {
if (vis) {
if (is_whirly(mon->data))
pline_mon(mon, "%s boots fall away!",
s_suffix(Monnam(mon)));
else
pline_mon(mon, "%s boots %s off %s feet!",
s_suffix(Monnam(mon)),
verysmall(mdat) ? "slide" : "are pushed", ppronoun);
}
m_lose_armor(mon, otmp, polyspot);
}
}
if (!can_saddle(mon)) {
if ((otmp = which_armor(mon, W_SADDLE)) != 0) {
m_lose_armor(mon, otmp, polyspot);
if (vis)
pline_mon(mon, "%s saddle falls off.", s_suffix(Monnam(mon)));
}
if (mon == u.usteed)
noride = TRUE;
}
if (noride || (mon == u.usteed && !can_ride(mon))) {
You("can no longer ride %s.", mon_nam(mon));
if (touch_petrifies(u.usteed->data) && !Stone_resistance && rnl(3)) {
char buf[BUFSZ];
You("touch %s.", mon_nam(u.usteed));
Sprintf(buf, "falling off %s",
an(pmname(u.usteed->data, Mgender(u.usteed))));
instapetrify(buf);
}
dismount_steed(DISMOUNT_FELL);
}
return;
}
/* bias a monster's preferences towards armor that has special benefits. */
staticfn int
extra_pref(struct monst *mon, struct obj *obj)
{
/* currently only does speed boots, but might be expanded if monsters
* get to use more armor abilities
*/
if (obj) {
if (obj->otyp == SPEED_BOOTS && mon->permspeed != MFAST)
return 20;
}
return 0;
}
/*
* Exceptions to things based on race.
* Correctly checks polymorphed player race.
* Returns:
* 0 No exception, normal rules apply.
* 1 If the race/object combination is acceptable.
* -1 If the race/object combination is unacceptable.
*/
int
racial_exception(struct monst *mon, struct obj *obj)
{
const struct permonst *ptr = raceptr(mon);
/* Acceptable Exceptions: */
/* Allow hobbits to wear elven armor - LoTR */
if (ptr == &mons[PM_HOBBIT] && is_elven_armor(obj))
return 1;
/* Unacceptable Exceptions: */
/* Checks for object that certain races should never use go here */
/* return -1; */
return 0;
}
/* Remove an object from a monster's inventory. */
void
extract_from_minvent(
struct monst *mon,
struct obj *obj,
boolean do_extrinsics, /* whether to call update_mon_extrinsics */
boolean silently) /* doesn't affect all possible messages,
* just update_mon_extrinsics's */
{
long unwornmask = obj->owornmask;
/*
* At its core this is just obj_extract_self(), but it also handles
* any updates that need to happen if the gear is equipped or in
* some other sort of state that needs handling.
* Note that like obj_extract_self(), this leaves obj free.
*/
if (obj->where != OBJ_MINVENT) {
impossible("extract_from_minvent called on object not in minvent");
return;
}
/* handle gold dragon scales/scale-mail (lit when worn) before clearing
obj->owornmask because artifact_light() expects that to be W_ARM */
if ((unwornmask & W_ARM) != 0 && obj->lamplit && artifact_light(obj))
end_burn(obj, FALSE);
obj_extract_self(obj);
obj->owornmask = 0L;
if (unwornmask) {
if (!DEADMONSTER(mon) && do_extrinsics) {
update_mon_extrinsics(mon, obj, FALSE, silently);
}
mon->misc_worn_check &= ~unwornmask;
/* give monster a chance to wear other equipment on its next
move instead of waiting until it picks something up */
check_gear_next_turn(mon);
}
obj_no_longer_held(obj);
if (unwornmask & W_WEP) {
mwepgone(mon); /* unwields and sets weapon_check to NEED_WEAPON */
}
}
#undef w_blocks
/*worn.c*/
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