using UnityEngine;
using System.Collections;

public class TestUIState : MonoBehaviour 
{
	public static EventSystem.Dispatcher Events = new EventSystem.Dispatcher();
	public FiniteStateMachine FSM = new FiniteStateMachine();
	
	void Awake()
	{
		FSM.Register( "MainMenu", new MainMenuUI());	
		FSM.Register( "AudioMenu", new AudioMenuUI());
		FSM.Register( "MainGame", new MainGame( FSM ));
		FSM.Register( "QuitGame", new QuitGameUI());
		
		FSM.EntryPoint( "MainMenu" );
		
		FSM.State( "MainMenu" ).On( "OPEN_AUDIO" ).Enter( "AudioMenu" ).On( "PLAY_GAME" ).Push( "MainGame" ).On( "QUIT_GAME" ).Enter( "QuitGame" );
		FSM.State( "QuitGame" ).On( "PROCESS_QUIT", delegate( bool sure )
		{
			if( sure )
			{
				gameObject.GetComponent< TestUIState>().enabled = false;
				Camera.main.backgroundColor = Color.black;
			}
			else
			{
				FSM.Enter( "MainMenu" );	
			}
		} );
		
		FSM.State( "AudioMenu" ).On( "BACK_TO_MENU" ).Enter( "MainMenu" );
		
		Events.On( "OpenMainGame", delegate() 
		{
			FSM.CurrentState.Trigger( "PLAY_GAME" );	
		});
		
		Events.On( "OpenAudioMenu", delegate() 
		{
			FSM.CurrentState.Trigger( "OPEN_AUDIO" );
		});
		
		Events.On( "QuitGame", delegate() 
		{
			FSM.CurrentState.Trigger( "QUIT_GAME" );
		});
		
		Events.On( "ConfirmQuit", delegate() 
		{
			FSM.CurrentState.Trigger( "PROCESS_QUIT", true );
		});
		
		Events.On( "CancelQuit", delegate() 
		{
			FSM.CurrentState.Trigger( "PROCESS_QUIT", false );
		});
		
		Events.On( "BackToMenu", delegate() 
		{
			FSM.CurrentState.Trigger( "BACK_TO_MENU", false );
		});
	}
	
	void Update()
	{
		FSM.Update();	
	}
	
	void OnGUI()
	{
		if( FSM.CurrentState == null )
		{
			return;	
		}
		MenuUI ui = (MenuUI)FSM.CurrentState.StateObject;
		ui.DoGUI();
	}
}
 

二、使用