public static function isOnScreen(n:FlxObject, leeway:Int = 0, ?Camera:FlxCamera):Bool
    {
        if (Camera == null)
        {
            Camera = FlxG.camera;
        }
        leeway = 0;
        var _point:FlxPoint = new FlxPoint(0, 0);
        n.getScreenPosition(_point, Camera);
        return (_point.x + n.width + leeway > 0) && (_point.x - leeway < Camera.width) && (_point.y + n.height > 0) && (_point.y < Camera.height);
    }