avoid telling hero they missed a monster they aren't aware of

Resolves #1441

include/extern.h

@@ -3409,6 +3409,7 @@ extern int passive(struct monst *, struct obj *, boolean, boolean, uchar,
 extern void passive_obj(struct monst *, struct obj *, struct attack *) NONNULLARG1;
 extern void that_is_a_mimic(struct monst *, unsigned) NONNULLARG1;
 extern void stumble_onto_mimic(struct monst *) NONNULLARG1;
+extern boolean mimic_disguised_as_non_mon(struct monst *) NONNULLARG1;
 extern int flash_hits_mon(struct monst *, struct obj *) NONNULLARG12;
 extern void light_hits_gremlin(struct monst *, int) NONNULLARG1;
 
@@ -3938,7 +3939,7 @@ extern int zhitm(struct monst *, int, int, struct obj **) NONNULLPTRS;
 extern int burn_floor_objects(coordxy, coordxy, boolean, boolean);
 extern void ubuzz(int, int);
 extern void buzz(int, int, coordxy, coordxy, int, int);
-extern void dobuzz(int, int, coordxy, coordxy, int, int, boolean);
+extern void dobuzz(int, int, coordxy, coordxy, int, int, boolean, boolean);
 extern void melt_ice(coordxy, coordxy, const char *) NO_NNARGS;
 extern void start_melt_ice_timeout(coordxy, coordxy, long);
 extern void melt_ice_away(union any *, long) NONNULLARG1;

src/mthrowu.c

@@ -1093,7 +1093,7 @@ breamm(struct monst *mtmp, struct attack *mattk, struct monst *mtarg)
                           Monnam(mtmp), breathwep_name(typ));
                 gb.buzzer = mtmp;
                 dobuzz(BZ_M_BREATH(BZ_OFS_AD(typ)), (int) mattk->damn,
-                       mtmp->mx, mtmp->my, sgn(gt.tbx), sgn(gt.tby), utarget);
+                       mtmp->mx, mtmp->my, sgn(gt.tbx), sgn(gt.tby), utarget, utarget);
                 gb.buzzer = 0;
                 nomul(0);
                 /* breath runs out sometimes. Also, give monster some

src/uhitm.c

@@ -6259,6 +6259,14 @@ stumble_onto_mimic(struct monst *mtmp)
         map_invisible(mtmp->mx, mtmp->my);
 }
 
+boolean
+mimic_disguised_as_non_mon(struct monst *mtmp)
+{
+    return (!sensemon(mtmp)
+            && M_AP_TYPE(mtmp)
+            && M_AP_TYPE(mtmp) != M_AP_MONSTER);
+}
+
 staticfn void
 nohandglow(struct monst *mon)
 {

src/zap.c

@@ -4692,13 +4692,13 @@ disintegrate_mon(
 void
 ubuzz(int type, int nd)
 {
-    dobuzz(type, nd, u.ux, u.uy, u.dx, u.dy, TRUE);
+    dobuzz(type, nd, u.ux, u.uy, u.dx, u.dy, TRUE, FALSE);
 }
 
 void
 buzz(int type, int nd, coordxy sx, coordxy sy, int dx, int dy)
 {
-    dobuzz(type, nd, sx, sy, dx, dy, TRUE);
+    dobuzz(type, nd, sx, sy, dx, dy, TRUE, FALSE);
 }
 
 /*
@@ -4716,7 +4716,7 @@ dobuzz(
     int nd,                 /* damage strength ('number of dice') */
     coordxy sx, coordxy sy, /* starting point */
     int dx, int dy,         /* direction delta */
-    boolean say)    /* announce out of sight hit/miss events if true */
+    boolean sayhit, boolean saymiss)    /* announce out of sight hit/miss events if true */
 {
     int range, fltyp = zaptype(type), damgtype = fltyp % 10;
     coordxy lsx, lsy;
@@ -4865,7 +4865,7 @@ dobuzz(
                     } else {
                         if (!otmp) {
                             /* normal non-fatal hit */
-                            if (say || canseemon(mon))
+                            if (sayhit || canseemon(mon))
                                 hit(flash_str(fltyp, FALSE), mon, exclam(tmp));
                         } else {
                             /* some armor was destroyed; no damage done */
@@ -4883,7 +4883,8 @@ dobuzz(
                 }
                 range -= 2;
             } else {
-                if (say || canseemon(mon))
+                if (saymiss
+                    || (canseemon(mon) && !mimic_disguised_as_non_mon(mon)))
                     miss(flash_str(fltyp, FALSE), mon);
             }
         } else if (u_at(sx, sy) && range >= 0) {