Fix: wearing gloves with elemental object properties and elemental damage.

Wearing gloves/gauntlets that have fire/cold/shock resistance can
sometimes cause elemental damage to monsters being attacked if you
attack them bare-handed. This damage was being applied to thrown objects
as well (technically still attacking without a wielded weapon). Prevent
that from occurring. Fix a similar case with the Gauntlets of Purity and
extra damage.

Author: k21971

doc/evilhack-changelog.md

@@ -4003,4 +4003,6 @@ The following changes to date are:
 - Adjust the artifact Keolewa shock damage so it's better than a club
   with the lightning object property
 - Fix: Harbinger was not protecting worn armor from acid damage
+- Fix: wearing gloves with elemental object properties and elemental
+  damage
 

src/uhitm.c

@@ -1821,7 +1821,7 @@ int dieroll;
 
     /* potential for gloves with an object property
        to do additional damage */
-    if (!destroyed && !rn2(3) && !uwep && uarmg
+    if (!destroyed && !rn2(3) && hand_to_hand && !uwep && uarmg
         && (uarmg->oprops & (ITEM_FIRE | ITEM_FROST | ITEM_SHOCK))) {
         artifact_hit(&youmonst, mon, uarmg, &tmp, dieroll);
         hittxt = TRUE;
@@ -1861,7 +1861,8 @@ int dieroll;
     /* if lawful, trained in martial arts, and wearing the
        Gauntlets of Purity, get a damage bonus when attacking
        unarmed */
-    if (!destroyed && actually_unarmed && P_SKILL(P_MARTIAL_ARTS)
+    if (!destroyed && hand_to_hand && actually_unarmed
+        && P_SKILL(P_MARTIAL_ARTS)
         && u.ualign.type == A_LAWFUL && martial_bonus()
         && uarmg && uarmg->oartifact == ART_GAUNTLETS_OF_PURITY)
         tmp += rnd(4) + 2;