f11 fullscreen

source/funkin/backend/system/FunkinGame.hx

@@ -1,9 +1,28 @@
 package funkin.backend.system;
 
 import flixel.FlxGame;
+import flixel.FlxG;
+import flixel.FlxState;
+import openfl.events.KeyboardEvent;
 
 class FunkinGame extends FlxGame {
 	var skipNextTickUpdate:Bool = false;
+
+	#if desktop
+	var fullscreenListener:KeyboardEvent->Void;
+
+	public function new(gameWidth:Int, gameHeight:Int, entryState:Class<FlxState>, updateFramerate:Int = 60, drawFramerate:Int = 60, skipSplash:Bool = false, startFullscreen:Bool = false) {
+		super(gameWidth, gameHeight, entryState, updateFramerate, drawFramerate, skipSplash, startFullscreen);
+
+		fullscreenListener = function(e:KeyboardEvent) {
+			if (e.keyCode == 122) {
+				FlxG.fullscreen = !FlxG.fullscreen;
+			}
+		};
+		FlxG.stage.addEventListener(KeyboardEvent.KEY_DOWN, fullscreenListener);
+	}
+	#end
+
 	public override function switchState() {
 		super.switchState();
 		// draw once to put all images in gpu then put the last update time to now to prevent lag spikes or whatever

source/funkin/menus/TitleState.hx

@@ -100,8 +100,6 @@ class TitleState extends MusicBeatState
 
 	override function update(elapsed:Float)
 	{
-		if (FlxG.keys.justPressed.F)  FlxG.fullscreen = !FlxG.fullscreen;
-
 		var pressedEnter:Bool = FlxG.keys.justPressed.ENTER;
 
 		#if mobile