public Window1()
{
InitializeComponent();
gameViewModel = new GameViewModel();
gameManager.DataContext = gameViewModel;
gameViewModel.IsGameOver.PropertyChanged += GameOverEvent;
}
private void Rematch()
{
gameViewModel = new GameViewModel();
gameManager.DataContext = gameViewModel;
gameViewModel.IsGameOver.PropertyChanged += GameOverEvent;
CloseMenu(null, null);
}