B14006 - monsters and lava

- water elementals now get a special message when they land in lava
- rather than track down all places where non-moving monsters can end up in
lava (or water, not that it currently matters), add a check to mcalcdistress
to catch all such cases, once per turn.

doc/fixes34.1

@@ -325,6 +325,7 @@ mimics that are detected but not seen should not display as their mimiced
 not all cavemen are human, so avoid using human in quest messages
 tengu is singular and plural, some rumors were incorrect
 don't let leader or nemesis be renamed
+non-moving monster are not affected by liquid
 
 
 Platform- and/or Interface-Specific Fixes

src/mon.c

@@ -380,7 +380,9 @@ register struct monst *mtmp;
 	if (!is_clinger(mtmp->data) && !likes_lava(mtmp->data)) {
 	    if (!resists_fire(mtmp)) {
 		if (cansee(mtmp->mx,mtmp->my))
-		    pline("%s burns to a crisp.", Monnam(mtmp));
+		    pline("%s %s.", Monnam(mtmp),
+			  mtmp->data == &mons[PM_WATER_ELEMENTAL] ?
+			  "boils aways" : "burns to a crisp");
 		mondead(mtmp);
 	    }
 	    else {
@@ -473,6 +475,13 @@ mcalcdistress()
     for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {
 	if (DEADMONSTER(mtmp)) continue;
 
+	/* must check non-moving monsters once/turn in case
+	 * they managed to end up in liquid */
+	if (mtmp->data->mmove == 0) {
+	    if (vision_full_recalc) vision_recalc(0);
+	    if (minliquid(mtmp)) continue;
+	}
+
 	/* regenerate hit points */
 	mon_regen(mtmp, FALSE);