/// <summary>
/// Removes a screen from the screen manager. You should normally use
/// <see cref="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 ((_graphicsDeviceService != null) &&
(_graphicsDeviceService.GraphicsDevice != null))
{
screen.UnloadContent();
}
// Remove the screen from the arrays
lock (_screens)
_screens.Remove(screen);
lock (_screensToUpdate)
_screensToUpdate.Remove(screen);
}
/// <summary>
/// Exits all screens
/// </summary>
public void ExitAll()
{
GameScreen[] to_remove = null;
lock (_screens)
{
to_remove = new GameScreen[_screens.Count];
_screens.CopyTo(to_remove);
}
foreach (GameScreen i_screen in to_remove)
i_screen.ExitScreen();
}
/// <summary>
/// Removes all screens but argument screen
/// </summary>
/// <param name="excluded_screen"></param>
public void RemoveAllBut(GameScreen excludedScreen)
{
List<GameScreen> i_screensToRemove = new List<GameScreen>();
lock (_screens)
foreach (GameScreen i_screen in _screens)
if (i_screen != excludedScreen)
i_screensToRemove.Add(i_screen);
foreach (GameScreen i_screen in i_screensToRemove)
RemoveScreen(i_screen);
i_screensToRemove.Clear();
}
/// <summary>
/// Adds a new screen to the screen manager.
/// </summary>
/// <param name="screen">Screen to add</param>
public void AddScreen(GameScreen screen)
{
screen.ScreenManager = this;
screen.InputManager = this.InputManager;
screen.Initialize();
// If we have a graphics device, tell the screen to load content.
if (_graphicsDeviceService != null && _graphicsDeviceService.GraphicsDevice != null)
screen.LoadContent(new ContentManager(Game.Services, "Content"));
lock (_screens)
_screens.Add(screen);
// Process post actions
screen.AfterScreenIsAdded();
}