前言

Unity中实现定时功能的方法有很多，比如协程、Update、Invoke、Async等，可以说是五花八门，对于这类实现方法多、需求频繁的功能还是需要一个管理器来统一处理。

功能

下面列出了该管理器支持的功能，可以根据根据所列功能判断是否符合你的需求。
1.添加和移除并中断
2.自定义完成事件
3.延迟时间或帧数
4.指定执行次数
5.循环执行
6.是否受TimeScale影响

源码

代码中使用的MonoMgr是我实现的公共组件，方便外部代码调用MonoBehaviour，这部分可以根据自己的实际需求调整。其余部分开箱即用。
代码中有注释，没有太复杂的功能，就不过多解释了。

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;public class TimerMgr : Singleton<TimerMgr>
{public delegate void CompleteEvent();class TimerData{public int id;public CompleteEvent onCompleted; //完成回调事件public float time;   // 所需时间或帧数public float targetTime;   // 目标时间（如果是帧数则无效）public bool isIgnoreTimeScale;  // 是否忽略时间速率public bool isLoop;     //是否重复public int executeCount;   //循环次数public bool isSecond;   //是否以秒为单位 否则为帧数public Coroutine coroutine; //标记协程}int timerId = 0;Dictionary<int, TimerData> timerDict = new Dictionary<int, TimerData>();List<int> tempRemoveTimer = new List<int>();public TimerMgr(){//绑定UpdateMonoMgr.Instance.AddUpdateListener(UpdateTime);}void UpdateTime(){for(int i = timerDict.Count - 1; i >= 0 ; i--){TimerData timeData = timerDict.ElementAt(i).Value;if (!timeData.isSecond){continue;}float nowTime = TimeNow(timeData.isIgnoreTimeScale);if (nowTime >= timeData.targetTime){timeData.onCompleted?.Invoke();timeData.executeCount -= 1;if (timeData.isLoop){timeData.targetTime = nowTime + timeData.time;}else{if(timeData.executeCount <= 0){tempRemoveTimer.Add(timeData.id);}else{timeData.targetTime = nowTime + timeData.time;}}}}for(int i = 0; i < tempRemoveTimer.Count; i++){RemoveTimer(tempRemoveTimer[i]);}tempRemoveTimer.Clear();}// 获取当前时间float TimeNow(bool isIgnoreTimeScale){return isIgnoreTimeScale ? Time.realtimeSinceStartup : Time.time;}/// <summary>/// 创建一个新的定时器（支持循环）/// </summary>/// <param name="time">延迟时间（秒）</param>/// <param name="onCompleted">结束回调</param>/// <param name="isLoop">是否循环,false则只执行一次</param>/// <param name="isSecond">秒/帧数</param>/// <param name="isIgnoreTimeScale">是否受TimeScale影响</param>/// <returns></returns>public int CreateNewTimer(float time, CompleteEvent onCompleted, bool isLoop = false, bool isSecond = true,bool isIgnoreTimeScale = false){timerId += 1;timerDict.Add(timerId, new TimerData(){id = timerId,onCompleted = onCompleted,time = time,targetTime = time + TimeNow(isIgnoreTimeScale),isIgnoreTimeScale = isIgnoreTimeScale,isLoop = isLoop,executeCount = 1,isSecond = isSecond});// 如果不是以秒为单位，则执行延迟帧数if (!isSecond){timerDict[timerId].coroutine = MonoMgr.Instance.StartCoroutine(DelayedExecution(timerDict[timerId]));}return timerId;}/// <summary>/// 创建一个新的定时器（支持执行次数）/// </summary>/// <param name="time">延迟时间（秒）</param>/// <param name="onCompleted">结束回调</param>/// <param name="count">执行次数</param>/// <param name="isSecond">秒/帧数</param>/// <param name="isIgnoreTimeScale">是否受TimeScale影响</param>/// <returns></returns>public int CreateNewCountTimer(float time, CompleteEvent onCompleted, int count, bool isSecond = true, bool isIgnoreTimeScale = false){timerId += 1;timerDict.Add(timerId, new TimerData(){id = timerId,onCompleted = onCompleted,time = time,targetTime = time + TimeNow(isIgnoreTimeScale),isIgnoreTimeScale = isIgnoreTimeScale,isLoop = false,executeCount = count,isSecond = isSecond});// 如果不是以秒为单位，则执行延迟帧数if (!isSecond){timerDict[timerId].coroutine = MonoMgr.Instance.StartCoroutine(DelayedExecution(timerDict[timerId]));}return timerId;}/// <summary>/// 移除指定定时器/// </summary>public void RemoveTimer(int id){if (timerDict.ContainsKey(id)){TimerData data = timerDict[id];if (!data.isSecond){MonoMgr.Instance.StopCoroutine(data.coroutine);}data = null;timerDict.Remove(id);}}/// <summary>/// 清除所有定时器/// </summary>public void RemoveAllTimer(){for (int i = timerDict.Count - 1; i >= 0; i--){int id = timerDict.ElementAt(i).Key;RemoveTimer(id);}}IEnumerator DelayedExecution(TimerData data){// 等待指定的帧数for (int i = 0; i < data.time; i++){yield return null; // 等待下一帧}// 执行动作data.onCompleted?.Invoke();data.executeCount -= 1;if (data.isLoop){// 防止完成事件中移除了定时器，不判断会导致依然执行协程if(data != null && timerDict.ContainsKey(data.id)){data.coroutine = MonoMgr.Instance.StartCoroutine(DelayedExecution(data));}}else{if(data.executeCount <= 0){RemoveTimer(data.id);}else{if (data != null && timerDict.ContainsKey(data.id)){data.coroutine = MonoMgr.Instance.StartCoroutine(DelayedExecution(data));}}}}
}