v2.5.0: fixed cases where Yog wouldn't immediately move to final phase

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/YogDzewa.java

@@ -183,24 +183,6 @@ public class YogDzewa extends Mob {
 			}
 		}
 
-		if (phase == 4 && findFist() == null){
-			yell(Messages.get(this, "hope"));
-			summonCooldown = -15; //summon a burst of minions!
-			phase = 5;
-			BossHealthBar.bleed(true);
-			Game.runOnRenderThread(new Callback() {
-				@Override
-				public void call() {
-					Music.INSTANCE.fadeOut(0.5f, new Callback() {
-						@Override
-						public void call() {
-							Music.INSTANCE.play(Assets.Music.HALLS_BOSS_FINALE, true);
-						}
-					});
-				}
-			});
-		}
-
 		if (phase == 0){
 			spend(TICK);
 			return true;
@@ -368,6 +350,28 @@ public class YogDzewa extends Mob {
 		return true;
 	}
 
+	public void processFistDeath(){
+		//normally Yog has no logic when a fist dies specifically
+		//but the very last fist to die does trigger the final phase
+		if (phase == 4 && findFist() == null){
+			yell(Messages.get(this, "hope"));
+			summonCooldown = -15; //summon a burst of minions!
+			phase = 5;
+			BossHealthBar.bleed(true);
+			Game.runOnRenderThread(new Callback() {
+				@Override
+				public void call() {
+					Music.INSTANCE.fadeOut(0.5f, new Callback() {
+						@Override
+						public void call() {
+							Music.INSTANCE.play(Assets.Music.HALLS_BOSS_FINALE, true);
+						}
+					});
+				}
+			});
+		}
+	}
+
 	@Override
 	public boolean isAlive() {
 		return super.isAlive() || phase != 5;

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/actors/mobs/YogFist.java

@@ -158,6 +158,16 @@ public abstract class YogFist extends Mob {
 		}
 	}
 
+	@Override
+	public void die(Object cause) {
+		super.die(cause);
+		for ( Char c : Actor.chars() ){
+			if (c instanceof YogDzewa){
+				((YogDzewa) c).processFistDeath();
+			}
+		}
+	}
+
 	protected abstract void zap();
 
 	public void onZapComplete(){