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 >= 0);
        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