public InvadersViewModel()
        {
            Scale = 1;

            _model.ShipChanged += ModelShipChangedEventHandler;
            _model.ShotMoved   += ModelShotMovedEventHandler;
            _model.StarChanged += ModelStarChangedEventHandler;

            _timer.Interval = TimeSpan.FromMilliseconds(66);
            _timer.Tick    += TimerTickEventHandler;

            _model.EndGame();
        }
        public InvadersViewModel()
        {
            _model = new InvadersModel();
            Scale  = 1;
            PopulateSprites();

            _timer.Interval = TimeSpan.FromMilliseconds(100);
            _timer.Tick    += timer_Tick;
            _timer.Start();
            _model.StarChanged += StarChangedHandler;
            _model.ShipChanged += ShipChangedHandler;
            _model.ShotMoved   += ShotMovedHandler;

            _model.EndGame();
        }
 private void EndGame()
 {
     _model.EndGame();
 }
 public void EndGame()
 {
     _model.EndGame();
 }