Adjust feedback when hitting a water-based monster or one that is und…

…erwater with burning hands spell.

There's also a 25% chance that the players burning hands will be
extinguished from hitting a monster that is underwater or a monster that
is water-based.

doc/evilhack-changelog.md

@@ -3535,4 +3535,6 @@ The following changes to date are:
 - Wand of probing or a stethoscope used on oneself will show reflection
   status (spell only)
 - Tweak power cost for wizards casting force bolt spell
+- Adjust feedback when hitting a water-based monster or one that is
+  underwater with burning hands spell
 

src/uhitm.c

@@ -2116,8 +2116,16 @@ int dieroll;
                      makeplural(body_part(HAND)),
                      mon_nam(mon));
         } else {
-            You("burn %s with your %s!", mon_nam(mon),
-                 makeplural(body_part(HAND)));
+            You("%s %s with your %s!",
+                can_vaporize(mon->data)
+                  ? "vaporize part of" : "burn",
+                mon_nam(mon), makeplural(body_part(HAND)));
+
+            if (!rn2(4) &&
+                (mon_underwater(mon) || can_vaporize(mon->data))) {
+                u.umburn = 0;
+                Your("%s are extinguished.", makeplural(body_part(HAND)));
+            }
 
             if (completelyburns(mon->data) || is_wooden(mon->data)
                 || mon->data == &mons[PM_GREEN_SLIME]) {