/// <summary>
/// Adds a new screen to the screen manager.
/// </summary>
public void AddScreen(GameScreen screen, PlayerIndex? controllingPlayer)
{
screen.ControllingPlayer = controllingPlayer;
screen.ScreenManager = this;
screen.IsExiting = false;
// If we have a graphics device, tell the screen to load content.
if (_isInitialized)
{
screen.LoadContent();
}
_screens.Add(screen);
// update the TouchPanel to respond to gestures this screen is interested in
TouchPanel.EnabledGestures = screen.EnabledGestures;
screen.FirstRun = false;
}
/// <summary>
/// Removes a screen from the screen manager. You should normally
/// use GameScreen.ExitScreen instead of calling this directly, so
/// the screen can gradually transition off rather than just being
/// instantly removed.
/// </summary>
public void RemoveScreen(GameScreen screen)
{
// If we have a graphics device, tell the screen to unload content.
if (_isInitialized)
{
screen.UnloadContent();
}
_screens.Remove(screen);
_screensToUpdate.Remove(screen);
// if there is a screen still in the manager, update TouchPanel
// to respond to gestures that screen is interested in.
if (_screens.Count > 0)
{
TouchPanel.EnabledGestures = _screens[_screens.Count - 1].EnabledGestures;
}
}