10 流程Procedure

所謂流程，本質是對于狀态機的再封裝。一個遊戲在運作是，不可能全程處于一個狀态，遊戲運作的不同狀态，我稱其為流程，比如剛打開遊戲的時候，可能處在登入頁面，或者說黑屏動畫的時候在加載資源，這就是遊戲運作的兩個不同狀态，這就是流程。

ProcedureBase

流程基類，本質就是一個狀态

/// <summary>
/// 流程基類
/// </summary>
public class ProcedureBase : FsmState<ProcedureManager>
{
 
    public override void OnEnter(Fsm<ProcedureManager> fsm)
    {
        base.OnEnter(fsm);
        Debug.Log("進入流程：" + GetType().FullName);
    }
 
    public override void OnLeave(Fsm<ProcedureManager> fsm, bool isShutdown)
    {
        base.OnLeave(fsm, isShutdown);
        Debug.Log("離開流程：" + GetType().FullName);
    }
 
}
           

ProcedureManager

/// <summary>
/// 流程管理器
/// </summary>
public class ProcedureManager : ManagerBase
{
    /// <summary>
    /// 狀态機管理器
    /// </summary>
    private FsmManager m_FsmManager;
 
    /// <summary>
    /// 流程的狀态機
    /// </summary>
    private Fsm<ProcedureManager> m_ProcedureFsm;
 
    /// <summary>
    /// 所有流程的清單
    /// </summary>
    private List<ProcedureBase> m_procedures;
 
    /// <summary>
    /// 入口流程
    /// </summary>
    private ProcedureBase m_EntranceProcedure;
 
    /// <summary>
    /// 目前流程
    /// </summary>
    public ProcedureBase CurrentProcedure
    {
        get
        {
            if (m_ProcedureFsm == null)
            {
                Debug.LogError("流程狀态機為空，無法擷取目前流程");
            }
            return (ProcedureBase)m_ProcedureFsm.CurrentState;
        }
    }
 
    public override int Priority
    {
        get
        {
            return ManagerPriority.ProcedureManager.GetHashCode();
        }
    }
 
    public ProcedureManager()
    {
        m_FsmManager = FrameworkEntry.Instance.GetManager<FsmManager>();
        m_ProcedureFsm = null;
        m_procedures = new List<ProcedureBase>();
    }
 
    public override void Init()
    {
        
    }
 
    public override void Shutdown()
    {
        
    }
 
    public override void Update(float time)
    {
        
    }
}
           

public class ProcedureManager : ManagerBase
{
   		/// <summary>
        /// 添加流程
        /// </summary>
        public void AddProcedure(ProcedureBase procedure)
        {
            if (procedure == null)
            {
                Debug.LogError("要添加的流程為空");
                return;
            }
            m_procedures.Add(procedure);
        }
 
        /// <summary>
        /// 設定入口流程
        /// </summary>
        /// <param name="procedure"></param>
        public void SetEntranceProcedure(ProcedureBase procedure)
        {
            m_EntranceProcedure = procedure;
        }
        
        /// <summary>
        /// 建立流程狀态機
        /// </summary>
        public void CreateProceduresFsm()
        {
            m_ProcedureFsm = m_FsmManager.CreateFsm(this, "", m_procedures.ToArray());
 
            if (m_EntranceProcedure == null)
            {
                Debug.LogError("入口流程為空，無法開始流程");
                return;
            }
 
            //開始流程
            m_ProcedureFsm.Start(m_EntranceProcedure.GetType());
        }
}
           

// 用這個流程模拟資源加載，3秒後正式進入遊戲流程
public class Procedure_Loading : ProcedureBase
{
    private float time = 0;
    
    public override void OnUpdate(Fsm<ProcedureManager> fsm, float time)
    {
        this.time += time;
        if (this.time > 3)
        {
            ChangeState<Procedure_Gaming>(fsm);
        }
    }
}

// 這個是遊戲中，當點選滑鼠左鍵時，遊戲切換到暫停狀态
public class Procedure_Gaming : ProcedureBase
{
    public override void OnUpdate(Fsm<ProcedureManager> fsm, float time)
    {
       	Debug.Log("遊戲中...");
        if (Input.GetMouseButtonDown(0))
        {
            ChangeState<Procedure_Pause>(fsm);
        }
    }
}

// 這個是暫停中，當點選滑鼠左鍵時，繼續運作遊戲
public class Procedure_Pause : ProcedureBase
{
    public override void OnUpdate(Fsm<ProcedureManager> fsm, float time)
    {
        Debug.Log("暫停中...");
        if (Input.GetMouseButtonDown(0)) 
        {
            ChangeState<Procedure_Gaming>(fsm);
        }
    }
}
           

public class test : MonoBehaviour
{
    void Start()
    {
        var procedureManager = SGFEntry.Instance.GetManager<ProcedureManager>();
        
        Procedure_Loading loading = new Procedure_Loading();
        procedureManager.AddProcedure(loading);
        procedureManager.SetEntranceProcedure(loading);

        procedureManager.AddProcedure(new Procedure_Gaming());
        procedureManager.AddProcedure(new Procedure_Pause());
        
        procedureManager.CreateProceduresFsm();
    }
}