/// <summary>
/// Internal method for leaving the network session. This disposes the
/// session, removes the NetworkSessionComponent, and returns the user
/// to the main menu screen.
/// </summary>
void LeaveSession()
{
// Destroy this NetworkSessionComponent.
Dispose();
// If we have a sessionEndMessage string explaining why the session has
// ended (maybe this was a network disconnect, or perhaps the host kicked
// us out?) create a message box to display this reason to the user.
MessageBoxScreen messageBox;
if (!string.IsNullOrEmpty(sessionEndMessage))
{
messageBox = new MessageBoxScreen(sessionEndMessage, false);
}
else
{
messageBox = null;
}
// At this point we want to return the user all the way to the main
// menu screen. But what if they just joined a session? In that case
// they went through this flow of screens:
//
// - MainMenuScreen
// - CreateOrFindSessionsScreen
// - JoinSessionScreen (if joining, skipped if creating a new session)
// - LobbyScreeen
//
// If we have these previous screens on the history stack, and the user
// backs out of the LobbyScreen, the right thing is just to pop off the
// intermediate screens, returning them to the existing MainMenuScreen
// instance without bothering to reload everything. But if the user is
// in gameplay, or has been in gameplay and then returned to the lobby,
// the screen stack will have been emptied.
//
// To do the right thing in both cases, we scan through the screen history
// stack looking for a MainMenuScreen. If we find one, we pop any
// subsequent screens so as to return back to it, while if we don't
// find it, we just reset everything via the LoadingScreen.
GameScreen[] screens = screenManager.GetScreens();
// Look for the MainMenuScreen.
for (int i = 0; i < screens.Length; i++)
{
if (screens[i] is MainMenuScreen)
{
// If we found one, pop everything since then to return back to it.
for (int j = i + 1; j < screens.Length; j++)
{
screens[j].ExitScreen();
}
// Display the why-did-the-session-end message box.
if (messageBox != null)
{
screenManager.AddScreen(messageBox, null);
}
return;
}
}
// If we didn't find an existing MainMenuScreen, reload everything.
// The why-did-the-session-end message box will be displayed after
// the loading screen has completed.
LoadingScreen.Load(screenManager, false, null, new TitleBackgroundScreen(),
new MainMenuScreen(),
messageBox);
}
/// <summary>
/// Event handler for when the Settings menu entry is selected.
/// </summary>
void SettingsMenuEntrySelected(object sender, PlayerIndexEventArgs e)
{
ScreenManager.AddScreen(new SettingsScreen(), e.PlayerIndex);
}
/// <summary>
/// Event handler for when the game over event
/// </summary>
void OnGameOver(object sender, PlayerIndexEventArgs e)
{
GameOverScreen gameOverScreen = new GameOverScreen(networkSession);
ScreenManager.AddScreen(gameOverScreen, ControllingPlayer);
}