/// <summary>
/// Activates the loading screen.
/// </summary>
public static void Load(ScreenManager screenManager, bool loadingIsSlow,
params GameScreen[] screensToLoad)
{
// Tell all the current screens to transition off.
foreach (GameScreen screen in screenManager.GetScreens())
screen.ExitScreen();
// Create and activate the loading screen.
LoadingScreen loadingScreen = new LoadingScreen(screenManager,
loadingIsSlow,
screensToLoad);
screenManager.AddScreen(loadingScreen);
}