private void MenuItem_NewGame_OnClick(object sender, RoutedEventArgs e)
{
StartNewGame newGame = new StartNewGame();
newGame.Owner = this;
newGame.WindowStartupLocation = WindowStartupLocation.CenterOwner;
newGame.ShowDialog();
if (newGame.DialogResult.HasValue && newGame.DialogResult.Value)
{
_playerSession.SetPlayer(newGame.NewPlayer);
}
}