v3.0.0: fixed exploits involving juggling salt cube

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

@@ -87,6 +87,23 @@ public class Regeneration extends Buff {
 		return true;
 	}
 
+	//helper method for resetting the delay when salt cube buff changes, to counter exploits
+	public void resetDelay( SaltCube cube ){
+		ChaliceOfBlood.chaliceRegen regenBuff = Dungeon.hero.buff( ChaliceOfBlood.chaliceRegen.class);
+		float delay = REGENERATION_DELAY;
+		if (regenBuff != null && target.buff(MagicImmune.class) == null) {
+			if (regenBuff.isCursed()) {
+				delay *= 1.5f;
+			} else {
+				//15% boost at +0, scaling to a 500% boost at +10
+				delay -= 1.33f + regenBuff.itemLevel()*0.667f;
+				delay /= RingOfEnergy.artifactChargeMultiplier(target);
+			}
+		}
+		delay /= SaltCube.healthRegenMultiplier(cube.level());
+		postpone( delay );
+	}
+	
 	public int regencap(){
 		return target.HT;
 	}

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/trinkets/SaltCube.java

@@ -21,6 +21,10 @@
 
 package com.shatteredpixel.shatteredpixeldungeon.items.trinkets;
 
+import com.shatteredpixel.shatteredpixeldungeon.Dungeon;
+import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Buff;
+import com.shatteredpixel.shatteredpixeldungeon.actors.buffs.Regeneration;
+import com.shatteredpixel.shatteredpixeldungeon.actors.hero.Hero;
 import com.shatteredpixel.shatteredpixeldungeon.messages.Messages;
 import com.shatteredpixel.shatteredpixeldungeon.sprites.ItemSpriteSheet;
 
@@ -36,6 +40,19 @@ public class SaltCube extends Trinket {
 		return 6+2*level();
 	}
 
+	@Override
+	protected void onDetach() {
+		//resets regen delay to counter exploits involving juggling the salt cube.
+		Buff.affect(Dungeon.hero, Regeneration.class).resetDelay(this);
+	}
+
+	@Override
+	public boolean doPickUp(Hero hero, int pos) {
+		//resets regen delay to counter exploits involving juggling the salt cube.
+		Buff.affect(Dungeon.hero, Regeneration.class).resetDelay(this);
+		return super.doPickUp(hero, pos);
+	}
+
 	@Override
 	public String statsDesc() {
 		if (isIdentified()){