fix #Q241 - swallowing Medusa (trunk only)

From a bug report, eating Medusa's corpse is fatal
but devouring her whole (purple worm or poly'd hero) was not.  Now it will
be.  Also, being killed by swallowing a cockatrice or a Rider could have
disclosed "you went without food" if you hadn't eaten anything else prior.
This fixes that too, although it might be a little silly if it happens to
a monk since he'll feel guilty (for non-vegetarian diet) right as he dies.

doc/fixes35.0

@@ -100,6 +100,8 @@ adjust feedback for gas spore explosion when hallucinating
 traps detected by scroll or crystal ball overlooked carried or buried chests
 can't wish for a trapped box/chest/tin by specifying "poisoned"
 grammar bit if killed by stealing a cockatrice corpse from a monster
+being petrified by swallowing a cockatrice violates foodless conduct
+devouring Medusa whole is fatal
 
 
 Platform- and/or Interface-Specific Fixes

src/mhitm.c

@@ -1,4 +1,4 @@
-/*	SCCS Id: @(#)mhitm.c	3.5	2005/09/27	*/
+/*	SCCS Id: @(#)mhitm.c	3.5	2005/12/02	*/
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -698,7 +698,9 @@ mdamagem(magr, mdef, mattk)
 	    res = MM_MISS;
 	boolean cancelled;
 
-	if (touch_petrifies(pd) && !resists_ston(magr)) {
+	if ((touch_petrifies(pd) ||	/* or flesh_petrifies() */
+		    (mattk->adtyp == AD_DGST && pd == &mons[PM_MEDUSA])) &&
+		!resists_ston(magr)) {
 	    long protector = attk_protection((int)mattk->aatyp),
 		 wornitems = magr->misc_worn_check;
 
@@ -1509,4 +1511,3 @@ int aatyp;
 }
 
 /*mhitm.c*/
-

src/uhitm.c

@@ -1774,9 +1774,17 @@ gulpum(mdef,mattk)
 register struct monst *mdef;
 register struct attack *mattk;
 {
+#ifdef LINT	/* static char msgbuf[BUFSZ]; */
+	char msgbuf[BUFSZ];
+#else
+	static char msgbuf[BUFSZ];	/* for nomovemsg */
+#endif
 	register int tmp;
 	register int dam = d((int)mattk->damn, (int)mattk->damd);
+	boolean fatal_gulp;
 	struct obj *otmp;
+	struct permonst *pd = mdef->data;
+
 	/* Not totally the same as for real monsters.  Specifically, these
 	 * don't take multiple moves.  (It's just too hard, for too little
 	 * result, to program monsters which attack from inside you, which
@@ -1785,27 +1793,44 @@ register struct attack *mattk;
 	 * after exactly 1 round of attack otherwise.  -KAA
 	 */
 
-	if(mdef->data->msize >= MZ_HUGE) return 0;
+	if (pd->msize >= MZ_HUGE) return 0;
 
 	if(u.uhunger < 1500 && !u.uswallow) {
 	    for (otmp = mdef->minvent; otmp; otmp = otmp->nobj)
 		(void) snuff_lit(otmp);
 
-	    if(!touch_petrifies(mdef->data) || Stone_resistance) {
-#ifdef LINT	/* static char msgbuf[BUFSZ]; */
-		char msgbuf[BUFSZ];
-#else
-		static char msgbuf[BUFSZ];
-#endif
+	    /* engulfing a cockatrice or digesting a Rider or Medusa */
+	    fatal_gulp = (touch_petrifies(pd) && !Stone_resistance) ||
+			(mattk->adtyp == AD_DGST && (is_rider(pd) ||
+			    (pd == &mons[PM_MEDUSA]) && !Stone_resistance));
+
+	    if ((mattk->adtyp == AD_DGST && !Slow_digestion) || fatal_gulp) {
+		/* KMH, conduct */
+		u.uconduct.food++;
+		if (!vegan(pd))
+		     u.uconduct.unvegan++;
+		if (!vegetarian(pd))
+		     violated_vegetarian();
+	    }
+
+	    if (fatal_gulp && !is_rider(pd)) {	/* petrification */
+		char kbuf[BUFSZ];
+		const char *mname = pd->mname;
+
+		if (!type_is_pname(pd)) mname = an(mname);
+		You("bite into %s.", mon_nam(mdef));
+		Sprintf(kbuf, "swallowing %s whole", mname);
+		instapetrify(kbuf);
+	    } else {
 		start_engulf(mdef);
 		switch(mattk->adtyp) {
 		    case AD_DGST:
 			/* eating a Rider or its corpse is fatal */
-			if (is_rider(mdef->data)) {
+			if (is_rider(pd)) {
 			 pline("Unfortunately, digesting any of it is fatal.");
 			    end_engulf();
 			    Sprintf(killer.name, "unwisely tried to eat %s",
-				    mdef->data->mname);
+				    pd->mname);
 			    killer.format = NO_KILLER_PREFIX;
 			    done(DIED);
 			    return 0;		/* lifesaved */
@@ -1816,13 +1841,6 @@ register struct attack *mattk;
 			    break;
 			}
 
-			/* KMH, conduct */
-			u.uconduct.food++;
-			if (!vegan(mdef->data))
-			     u.uconduct.unvegan++;
-			if (!vegetarian(mdef->data))
-			     violated_vegetarian();
-
 			/* Use up amulet of life saving */
 			if (!!(otmp = mlifesaver(mdef))) m_useup(mdef, otmp);
 
@@ -1832,12 +1850,11 @@ register struct attack *mattk;
 			    You("hurriedly regurgitate the sizzling in your %s.",
 				body_part(STOMACH));
 			} else {
-			    tmp = 1 + (mdef->data->cwt >> 8);
+			    tmp = 1 + (pd->cwt >> 8);
 			    if (corpse_chance(mdef, &youmonst, TRUE) &&
-				!(mvitals[monsndx(mdef->data)].mvflags &
-				  G_NOCORPSE)) {
+				!(mvitals[monsndx(pd)].mvflags & G_NOCORPSE)) {
 				/* nutrition only if there can be a corpse */
-				u.uhunger += (mdef->data->cnutrit+1) / 2;
+				u.uhunger += (pd->cnutrit + 1) / 2;
 			    } else tmp = 0;
 			    Sprintf(msgbuf, "You totally digest %s.",
 					    mon_nam(mdef));
@@ -1852,9 +1869,9 @@ register struct attack *mattk;
 				nomul(-tmp);
 				nomovemsg = msgbuf;
 			    } else pline("%s", msgbuf);
-			    if (mdef->data == &mons[PM_GREEN_SLIME]) {
+			    if (pd == &mons[PM_GREEN_SLIME]) {
 				Sprintf(msgbuf, "%s isn't sitting well with you.",
-					The(mdef->data->mname));
+					The(pd->mname));
 				if (!Unchanging) {
 				    make_slimed(5L, (char*) 0);
 				}
@@ -1867,8 +1884,7 @@ register struct attack *mattk;
 			if (youmonst.data == &mons[PM_FOG_CLOUD]) {
 			    pline("%s is laden with your moisture.",
 				  Monnam(mdef));
-			    if (amphibious(mdef->data) &&
-				!flaming(mdef->data)) {
+			    if (amphibious(pd) && !flaming(pd)) {
 				dam = 0;
 				pline("%s seems unharmed.", Monnam(mdef));
 			    }
@@ -1937,12 +1953,6 @@ register struct attack *mattk;
 		    pline("Obviously, you didn't like %s taste.",
 			  s_suffix(mon_nam(mdef)));
 		}
-	    } else {
-		char kbuf[BUFSZ];
-
-		You("bite into %s.", mon_nam(mdef));
-		Sprintf(kbuf, "swallowing %s whole", an(mdef->data->mname));
-		instapetrify(kbuf);
 	    }
 	}
 	return(0);