/// <summary>
/// This method is self explanitory, it asks for the class name you wish to add to the screenstack and pushes
/// it onto the top.
/// </summary>
/// <param name="screenName"></param>
public void Add(string screenName)
{
//Halt the sound manager
Locator.Instance.getService <SoundManager>().Stop();
//Create the new requested screen and initialize it
BaseScreen myScreen = (BaseScreen)Activator.CreateInstance(Type.GetType("Engine." + screenName));
myScreen.Initialize();
//Push the initialized screen onto the screenstack
screenStack.Push(myScreen);
//Call the screen change method for subscribers
onScreenChange(myScreen);
}
/// <summary>
/// Removes the top screen from the stack. Should be used in situations such as if
/// the
/// er has lost all of his lives and the state should be reverted back to the menu screen
/// this will be your god. It basically goes back one screen :)
/// </summary>
public void RemoveTopScreen()
{
IScreen screen = screenStack.Peek();
screen.Unload();
screenStack.Pop();
Locator.Instance.getService <CameraManager>().getCam().reset();
BaseScreen myScreen = screenStack.Peek();
onScreenChange(myScreen);
}
/// <summary>
/// This is probably the worst way of going about it but this method checks the top screen and updates it
/// Although this will not be relevant soon since screen updates will be decided through ENUMS.
/// </summary>
/// <param name="gameTime"></param>
public void UpdateTopScreen(GameTime gameTime)
{
BaseScreen updateScreen = screenStack.Peek();
updateScreen.Update(gameTime);
}
/// <summary>
/// Currently draws the topmost screen, needs to be improved to support things such as pop ups
/// It'll be a simple fix to check to see which screens are requesting to be drawn
/// and draw them in the order of the stack.
/// </summary>
/// <param name="spriteBatch"></param>
public void Draw(SpriteBatch spriteBatch)
{
BaseScreen DrawScreen = screenStack.Peek();
DrawScreen.Draw(spriteBatch);
}