Unity游戏开发中必备的设计模式之外观模式详解

/// <summary>
/// Describe：整合所有子系统的接口及功能
/// </summary>
public class PBaseDefenseGame
{
	//使用单例
	private static PBaseDefenseGame _instance;
	public static PBaseDefenseGame Instance
	{
		get
		{
			if (_instance == null)			
				_instance = new PBaseDefenseGame();
			return _instance;
		}
	}
	//场景状态
	private bool m_bGameOver = false;
    //游戏系统
    private GameEventSystem m_GameEventSystem;
    private CampSystem m_CampSystem;
    private StageSystem m_StageSystem;
    /// <summary>
    /// 初始化
    /// </summary>
    public void Initinal()
    {
    	m_bGameOver = false;
        //游戏系统
        m_GameEventSystem = new GameEventSystem(this);
        m_CampSystem = new CampSystem(this);
        m_StageSystem = new StageSystem(this);
        //...
    }
    //释放系统游戏
	public void Release()
	{
		// 游戏系统
		m_GameEventSystem.Release();
		m_CampSystem.Release();
		m_StageSystem.Release();
		m_CharacterSystem.Release();
		//...
	}
    /// <summary>
    /// 更新
    /// </summary>
    public void Update()
    {
        //游戏系统更新
        m_GameEventSystem.Update();
        m_CampSystem.Update();
        m_StageSystem.Update();
        //...
    }
    //游戏状态
    public bool ThisGameIsOver()
    {
        return m_bGameOver;
    }
    //...
}

/// <summary>
/// Describe：战斗场景
/// </summary>
public class BattleState : ISceneState
{
	public BattleState(SceneStateController Controller) : base(Controller)
	{
		this.StateName = "BattleState";
	}
	// 开始
	public override void StateBegin()
	{
		PBaseDefenseGame.Instance.Initinal();
	}
	// 结束
	public override void StateEnd()
	{
		PBaseDefenseGame.Instance.Release();
	}
	// 更新
	public override void StateUpdate()
	{
		// 游戏更新
		PBaseDefenseGame.Instance.Update();
		// Render由Unity負責
		// 游戏是否結束
		//if (PBaseDefenseGame.Instance.ThisGameIsOver())
		//m_Controller.SetState(new MainMenuState(m_Controller), "MainMenuScene");
	}
}