/// <summary>
        /// Event handler for when the Play Game menu entry is selected.
        /// </summary>
        void PlayGameMenuEntrySelected(object sender, EventArgs e)
        {
            GameStateManager.StartGame();

            LoadingScreen.Load(ScreenManager, true, new TacticalScreen());
        }
 /// <summary>
 /// Event handler for when the user selects ok on the "are you sure
 /// you want to quit" message box. This uses the loading screen to
 /// transition from the game back to the main menu screen.
 /// </summary>
 void ConfirmQuitMessageBoxAccepted(object sender, EventArgs e)
 {
     //GameManager.EndGame();
     LoadingScreen.Load(ScreenManager, false, null, new BackgroundScreen(),
                        new MainMenuScreen());
 }