/// <summary>
/// Private constructor of a Session object.
/// </summary>
/// <remarks>
/// The lack of public constructors forces the singleton model.
/// </remarks>
private Session(ScreenManager screenManager, GameplayScreen gameplayScreen)
{
// check the parameter
if (screenManager == null)
{
throw new ArgumentNullException("screenManager");
}
if (gameplayScreen == null)
{
throw new ArgumentNullException("gameplayScreen");
}
// assign the parameter
this.screenManager = screenManager;
this.gameplayScreen = gameplayScreen;
}
/// <summary>
/// Start a new session based on the data provided.
/// </summary>
public static void StartNewSession(ScreenManager screenManager, GameplayScreen gameplayScreen)
{
if (screenManager == null)
{
throw new ArgumentNullException("screenManager");
}
if (gameplayScreen == null)
{
throw new ArgumentNullException("gameplayScreen");
}
// end any existing session
EndSession();
// create a new singleton
singleton = new Session(screenManager, gameplayScreen);
}