Stage class rewrite & Stage Editor Overhaul (WORK IN PROGRESS) (#1097)

* Stage Rewrite (WIP)

only this for now. I'm going to rest...

* Streamlined XML data parsing

* Insert ordering thing

* Update Stage.hx

discarded render texture until I find a better way to do it :'3

* bunch of new stage stuff :3

* better bounds hitbox handling

* are you kidding me?

made a small optimization as well :3

* Update Stage.hx

Author: Jamextreme140

source/funkin/backend/utils/CoolUtil.hx

@@ -704,7 +704,7 @@ final class CoolUtil
 	 * @param xml XML to get the attribute from
 	 * @param name Name of the attribute
 	 */
-	public static inline function getAtt(xml:Access, name:String) {
+	public static function getAtt(xml:Access, name:String):Null<String> {
 		/*if (!xml.has.resolve(name)) return null;
 		return xml.att.resolve(name);*/
 		// Reason for change:

source/funkin/game/Character.hx

@@ -14,6 +14,7 @@ import funkin.backend.scripting.Script;
 import funkin.backend.scripting.ScriptPack;
 import funkin.backend.scripting.events.CancellableEvent;
 import funkin.backend.scripting.events.character.*;
+import funkin.backend.scripting.events.sprite.PlayAnimContext;
 import funkin.backend.scripting.events.sprite.*;
 import funkin.backend.scripting.events.PointEvent;
 import funkin.backend.scripting.events.DrawEvent;

source/funkin/game/PlayState.hx

@@ -42,6 +42,7 @@ using StringTools;
 @:access(funkin.game.StrumLine)
 class PlayState extends MusicBeatState
 {
+	public static final __instanceFields = Type.getInstanceFields(PlayState);
 	/**
 	 * Current PlayState instance.
 	 */

source/funkin/game/Stage.hx

@@ -16,6 +16,7 @@ import haxe.xml.Access;
 
 using StringTools;
 
+//@:deprecated typedef Stage = funkin.game.stage.Stage;
 /**
  * A class that handles loading a stage and putting the sprites into the state.
 **/
@@ -421,6 +422,7 @@ class Stage extends FlxBasic implements IBeatReceiver {
 	}
 }
 
+//@:deprecated typedef StageCharPos = funkin.game.stage.Stage.StageCharPos;
 class StageCharPos extends FlxObject {
 	public var extra:Map<String, Dynamic> = [];
 
@@ -496,13 +498,15 @@ class StageCharPos extends FlxObject {
 		oldInfo = null;
 	}
 }
+//@:deprecated typedef StageCharPosInfo = funkin.game.stage.Stage.StageCharPosInfo;
 typedef StageCharPosInfo = {
 	var x:Float;
 	var y:Float;
 	var flip:Bool;
 	var scroll:Float;
 }
 
+//@:deprecated typedef OldCharInfo = funkin.game.stage.Stage.OldCharInfo;
 typedef OldCharInfo = {
 	var x:Float;
 	var y:Float;