Half_physical_damage 05

- [fixed in trunk] Jumping/Newton's-Thirding into something solid
- [fixed in trunk] Being hit by Mjollnir on the return
- [fixed in trunk] Contaminated or boiling water from a sink
- [fixed in trunk] Falling on a sink while levitating
- [fixed in trunk, fire only] Any passive attack
- [fixed in trunk] Zapping yourself with a wand, horn or spell
- [fixed in trunk] Burning (un)holy water
- [fixed in trunk] Thrown potion (bottle)
- [fixed in trunk] Bumping head on ceiling by cursed levitation
- [fixed in trunk] Exploding rings and wands (under all circumstances)
- [fixed in trunk] Stinking cloud damage
- [fixed in trunk] Sitting in a spiked pit, in lava
- [fixed in trunk] Exploding spellbooks
- [fixed in trunk] Falling off or failing to mount a steed
- [fixed in trunk] Falling into a (spiked) pit
- [fixed in trunk] Land mine explosion
- [fixed in trunk] Fire traps

src/region.c

@@ -912,7 +912,7 @@ genericptr_t p2;
 	if (!Poison_resistance) {
 	    pline("%s is burning your %s!", Something, makeplural(body_part(LUNG)));
 	    You("cough and spit blood!");
-	    losehp(rnd(dam) + 5, "gas cloud", KILLED_BY_AN);
+	    losehp(Maybe_Half_Phys(rnd(dam) + 5), "gas cloud", KILLED_BY_AN);
 	    return FALSE;
 	} else {
 	    You("cough!");