var spriteClass = Type.resolveClass(spriteNode.x.get("class"));
        if (spriteClass == null)
            return;
        var constructor = Std.string(Reflect.field(spriteClass, "new"));
        var arity = Std.parseInt(constructor.substr(constructor.indexOf(":") + 1));
        var args = [];
        for(i in 0 ... arity)
            args.push(null);

        var sprite:FlxSprite = cast(Type.createInstance(spriteClass, args), FlxSprite);