making stages easier to be properly destroyed

Author: NexIsDumb

source/funkin/game/PlayState.hx

@@ -1060,14 +1060,22 @@ class PlayState extends MusicBeatState
 	}
 
 	public override function destroy() {
+		var notNull = stage != null;
+		if (notNull) PlayState.instance.gameAndCharsCall("onStageDestroy", [stage]);
 		scripts.call("destroy");
-		for(g in __cachedGraphics)
-			g.useCount--;
+
+		for (g in __cachedGraphics) g.useCount--;
 		@:privateAccess {
 			for (strumLine in strumLines.members) FlxG.sound.destroySound(strumLine.vocals);
 			if (FlxG.sound.music != inst) FlxG.sound.destroySound(inst);
 			FlxG.sound.destroySound(vocals);
 		}
+
+		if (notNull) {
+			stage.destroySilently();
+			remove(stage, true);
+		}
+
 		scripts = FlxDestroyUtil.destroy(scripts);
 
 		super.destroy();

source/funkin/game/Stage.hx

@@ -206,7 +206,7 @@ class Stage extends FlxBasic implements IBeatReceiver {
 			}
 
 			// idk lemme check anyways just in case scripts did smth  - Nex
-			if (event != null) PlayState.instance.scripts.event("onPostStageCreation", event);
+			if (event != null) PlayState.instance.gameAndCharsEvent("onPostStageCreation", event);
 
 			// shortlived scripts destroy when the stage finishes setting up  - Nex
 			for (info in xmlImportedScripts) if (info.shortLived) {
@@ -349,17 +349,37 @@ class Stage extends FlxBasic implements IBeatReceiver {
 		}
 	}
 
-	public function beatHit(curBeat:Int) {}
-
-	public function stepHit(curStep:Int) {}
+	/**
+	 * Same of destroy, but doesn't call the various script events.
+	 * @param destroySprites Whether the stage sprites should be destroyed
+	 * @param destroyScript Whether the stage script should be destroyed
+	**/
+	public function destroySilently(destroySprites:Bool = true, destroyScript:Bool = true) {
+		if (destroyScript && stageScript != null) {
+			if (PlayState.instance == state && PlayState.instance.scripts != null) PlayState.instance.scripts.remove(stageScript);
+			stageScript.destroy();
+		}
 
-	public function measureHit(curMeasure:Int) {}
+		if (destroySprites)
+			for (e in stageSprites)
+				e?.destroy();
 
-	public override function destroy() {
 		startCam.put();
 		super.destroy();
 	}
 
+	public override function destroy() {
+		if (PlayState.instance == state && PlayState.instance.scripts != null) PlayState.instance.gameAndCharsCall("onStageDestroy", [this]);
+		stageScript?.call("destroy");
+		destroySilently();
+	}
+
+	public function beatHit(curBeat:Int) {}
+
+	public function stepHit(curStep:Int) {}
+
+	public function measureHit(curMeasure:Int) {}
+
 	/**
 	 * Gets a list of stages that are available to be used.
 	 * @param mods Whenever only the mods folder should be checked