private void OnspawnTimerElapsed(object sender, ElapsedEventArgs e)
 {
     if (_random.NextDouble() > .45 && _playgroundObjects.Count(x => x.ObjectType == ObjectType.Enemy) < 5)
     {
         //because we add a new enemy to the canvas we have to call the canvas dispatcher
         _gameView.GameCanvas.Dispatcher.Invoke(() =>
         {
             _playgroundObjects.Add(_enemyFactory.DrawEnemy(_enemyFactory.LoadEnemy(_playgroundObjects),
                                                            _gameView.GameCanvas));
         });
     }
 }