简单实现一个Unity3d的Timer

• 数量使用的不太多，没有实现对象池.

---

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.Events;

 public class ZSTimerManager: SingletonGeneric<ZSTimerManager>
 {
     private List<ZSTimerTask> timers = new List<ZSTimerTask>();
     public static ZSTimerManagerStub stub = new GameObject("ZSTimerManagerStub").AddComponent<ZSTimerManagerStub>();

     public ZSTimerTask Create(int total, int interval, int ID)
     {
         var t = timers.Find(pt => pt.ID == ID);
         if (t != null)
         {
             Debug.LogErrorFormat("the timer what ID = {0} already exist.", ID);
             return null;
         }
         ZSTimerTask task = new ZSTimerTask(ID);
         timers.Add(task);

         return task;
     }

     public ZSTimerTask GetTimer(int ID)
     {
         return timers.Find(task => task.ID == ID);
     }

     public void RemoveTimer(int ID)
     {
         var timer = GetTimer(ID);
         if (timer == null) Debug.LogErrorFormat("ID = {0} are not found.", ID);
         timers.Remove(GetTimer(ID));
     }
 }

 public class ZSTimerTask
 {
     /// <summary>
     /// 总时间
     /// </summary>
     private int _total;
     /// <summary>
     /// 间隔时间
     /// </summary>
     private int _interval;
     /// <summary>
     /// ID
     /// </summary>
     public int ID { get; set; }

     private Coroutine driver;
     /// <summary>
     /// 剩余时间
     /// </summary>
     public int Therest { get; private set; }

     public UnityEvent OnStart = new UnityEvent();
     public UnityEvent OnComplete = new UnityEvent();
     public UnityEvent OnInterval = new UnityEvent();

     public ZSTimerTask(int id)
     {
         this.ID = id;
     }

     public virtual void Start(int total, int interval)
     {
         _total = total;
         Therest = _total;
         _interval = interval;
         OnStart.Invoke();
         driver = ZSTimerManager.stub.StartCoroutine(TickRoutine());
     }

     public virtual void Stop()
     {
         if (driver != null) ZSTimerManager.stub.StopCoroutine(driver);
     }

     public virtual void Reset()
     {
         Therest = _total;
         if (driver != null) ZSTimerManager.stub.StopCoroutine(TickRoutine());
         driver = ZSTimerManager.stub.StartCoroutine(TickRoutine());
     }

     /// <summary>
     /// DRIVER
     /// </summary>
     protected virtual IEnumerator TickRoutine()
     {
         do
         {
             OnInterval.Invoke();
             yield return new WaitForSeconds(_interval);
             Therest -= _interval;
         } while (Therest >= );
         OnComplete.Invoke();
     }

     public virtual void Close()
     {
         OnStart.RemoveAllListeners();
         OnComplete.RemoveAllListeners();
         OnInterval.RemoveAllListeners();
         if (driver != null) ZSTimerManager.stub.StopCoroutine(TickRoutine());
     }
 }

 public sealed class ZSTimerManagerStub : MonoBehaviour { }

Smart Timers Manager