v0.3.5: various logic fixes to accommodate chars that are 0 hp, but not dead.

src/com/shatteredpixel/shatteredpixeldungeon/actors/Char.java

@@ -274,7 +274,10 @@ public abstract class Char extends Actor {
 				CharSprite.NEGATIVE,
 				Integer.toString( dmg ) );
 		}
-		if (HP <= 0) {
+
+		if (HP < 0) HP = 0;
+
+		if (!isAlive()) {
 			die( src );
 		}
 	}

src/com/shatteredpixel/shatteredpixeldungeon/actors/buffs/Regeneration.java

@@ -34,7 +34,7 @@ public class Regeneration extends Buff {
 
 			if (target.HP < target.HT && !((Hero)target).isStarving()) {
 				LockedFloor lock = target.buff(LockedFloor.class);
-				if (lock == null || lock.regenOn()) {
+				if (target.HP > 0 && (lock == null || lock.regenOn())) {
 					target.HP += 1;
 					if (target.HP == target.HT) {
 						((Hero) target).resting = false;