/// <summary>
/// Event handler called when the system delivers an invite notification.
/// This can occur when the user accepts an invite that was sent to them by
/// a friend (pull mode), or if they choose the "Join Session In Progress"
/// option in their friends screen (push mode). The handler leaves the
/// current session (if any), then joins the session referred to by the
/// invite. It is not necessary to prompt the user before doing this, as
/// the Guide will already have taken care of the necessary confirmations
/// before the invite was delivered to you.
/// </summary>
public static void InviteAccepted(ScreenManager screenManager,
InviteAcceptedEventArgs e)
{
// If we are already in a network session, leave it now.
NetworkSessionComponent self = FindSessionComponent(screenManager.Game);
if (self != null)
{
self.Dispose();
}
try {
// Which local profiles should we include in this session?
IEnumerable <SignedInGamer> localGamers =
ChooseGamers(NetworkSessionType.PlayerMatch, e.Gamer.PlayerIndex);
// Begin an asynchronous join-from-invite operation.
IAsyncResult asyncResult = NetworkSession.BeginJoinInvited(localGamers,
null, null);
// Use the loading screen to replace whatever screens were previously
// active. This will completely reset the screen state, regardless of
// whether we were in the menus or playing a game when the invite was
// delivered. When the loading screen finishes, it will activate the
// network busy screen, which displays an animation as it waits for
// the join operation to complete.
NetworkBusyScreen busyScreen = new NetworkBusyScreen(asyncResult);
busyScreen.OperationCompleted += JoinInvitedOperationCompleted;
LoadingScreen.Load(screenManager, false, null, new BackgroundScreen(),
busyScreen);
} catch (Exception exception) {
NetworkErrorScreen errorScreen = new NetworkErrorScreen(exception);
LoadingScreen.Load(screenManager, false, null, new BackgroundScreen(),
new MainMenuScreen(),
errorScreen);
}
}
/// <summary>
/// Event handler for when the asynchronous join network session
/// operation has completed.
/// </summary>
void JoinSessionOperationCompleted(object sender, OperationCompletedEventArgs e)
{
try
{
// End the asynchronous join network session operation.
NetworkSession networkSession = NetworkSession.EndJoin(e.AsyncResult);
// Create a component that will manage the session we just joined.
NetworkSessionComponent.Create(ScreenManager, networkSession);
// Go to the lobby screen. We pass null as the controlling player,
// because the lobby screen accepts input from all local players
// who are in the session, not just a single controlling player.
ScreenManager.AddScreen(new LobbyScreen(networkSession), null);
availableSessions.Dispose();
}
catch (Exception exception)
{
NetworkErrorScreen errorScreen = new NetworkErrorScreen(exception);
ScreenManager.AddScreen(errorScreen, ControllingPlayer);
}
}