Error using loadgraphic - Error #2015: Invalid BitmapData.

Travis Stewart

I was working on a game with an inventory system, which I created as a singleton and planned to add to any state that required it. Just before loading the first scene in the game, I call a method called setupInventory, which is supposed to initialize a sprite for the background of the inventory, and a group for the items that are placed in it.

I call the method just before creating the PlayState, as shown here:

class Game extends FlxGame
{
  public static var instance:Game;
	
     public function new() {
             .......
     }
		
     override public function update():Void {
     	super.update();
     }
	
     public static function startGame():Void {
     	Inventory.instance.setupInventory();
 	changeScene(new PlayState());
     }
	
     public static function changeScene(scene:FlxState):Void {
	FlxG.switchState(scene);
     }	
}

and setupInventory currently simply does this:

    public function setupInventory():Void {
      backgroundImage = new FlxSprite(700, 64);
      backgroundImage.loadGraphic(AssetPaths.hammer__png);
}

but when I build and run this in flash, I get an error:

ArgumentError: Error #2015: Invalid BitmapData.
	at flash.display::BitmapData/copyPixels()
	at flixel.graphics.frames::FlxFrame/paint()
	at flixel::FlxSprite/updateFramePixels()
	at flixel::FlxSprite/calcFrame()
	at flixel::FlxSprite/draw()
	at flixel.group::FlxTypedGroup/draw()
	at flixel.group::FlxTypedGroup/draw()
	at flixel::FlxState/draw()
	at flixel::FlxGame/draw()
	at flixel::FlxGame/onEnterFrame()

and I really do not know what this means, or why I would get it. I use the same asset at another point and it does not seem to have any errors. When I test using neko I do not get an error (though I am having some problems getting everything to draw, but I think that is a post for another day).

DleanJeans

I would not recommend writing a new class extending FlxGame but instead use signals in FlxG.signals like this:

Probably somewhere in your Main.hx:

// setup inventory before creating first state
FlxG.signals.preStateCreate.addOnce(Inventory.instance.setupInventory);

// setup inventory after creating first state
FlxG.signals.gameStarted.add(Inventory.instance.setupInventory);

Travis Stewart

I set things up differently so that I am no longer extending FlxGame, but I am still getting the same error.

DleanJeans

How different is the setup exactly?
Maybe create a test project which only has the Inventory and load the background before first state is created just like what you're doing right now.

Gama11

Flixel's graphics cache is cleared before state switches, so the BitmapData of the sprite may already be disposed when you enter PlayState (since you created the sprite beforehand).

DleanJeans

If what @Gama11 said is right, then try:

sprite.graphic.persist = true;