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本篇我们通过使用单例模式来创建一个公共执行器，使得原本应该在Update()、FixedUpdate()中的指令都可以统一放在一个对象中执行，且可进行添加和移除操作。

1. 创建单例模式改造器：SingletonMono

我们先创建一个单例模式改造器，使得其它类想要使用单例模式都可以直接继承该类：

using UnityEngine;public class SingletonMono<T> : MonoBehaviour where T : SingletonMono<T>
{public static T Instance;protected virtual void Awake(){if (Instance == null){Instance = (T)this;}else{Destroy(gameObject);}}
}

2. 公共执行器：MonoManager

关于 PlayerInputControl 类的相关解释可参考文章：[步骤] 启用Unity全新输入系统。

using System;
using UnityEngine;public class MonoManager : SingletonMono<MonoManager>
{[HideInInspector] public PlayerInputControl input;private void OnEnable(){if (input == null)input = new PlayerInputControl();input.Enable();}private void OnDisable(){input?.Disable();}private Action updateAction;private Action lateUpdateAction;private Action fixedUpdateAction;public void AddUpdateListener(Action action){updateAction += action;}public void RemoveUpdateListener(Action action){updateAction -= action;}public void AddLateUpdateListener(Action action){lateUpdateAction += action;}public void RemoveLateUpdateListener(Action action){lateUpdateAction -= action;}public void AddFixedUpdateListener(Action action){fixedUpdateAction += action;}public void RemoveFixedUpdateListener(Action action){fixedUpdateAction -= action;}private void Update(){updateAction?.Invoke();}private void LateUpdate(){lateUpdateAction?.Invoke();}private void FixedUpdate(){fixedUpdateAction?.Invoke();}
}

 3. 测试：TestMonoManager

using System.Collections;
using UnityEngine;public class TestMonoManager : MonoBehaviour
{Coroutine coroutine;private void Start(){MonoManager.Instance.AddUpdateListener(TestUpdate);MonoManager.Instance.AddFixedUpdateListener(TestFixedUpdate);MonoManager.Instance.AddFixedUpdateListener(TestLateUpdate);coroutine = MonoManager.Instance.StartCoroutine(TestCoroutine());}private void TestUpdate(){print("正在执行Update");}private void TestFixedUpdate(){print("正在执行FixedUpdate");}private void TestLateUpdate(){print("正在执行LateUpdate");}private IEnumerator TestCoroutine(){while (true){yield return new WaitForSeconds(0.1f);print("正在执行TestCoroutine");// 当用户按下<移动键>则停止执行该协程if (MonoManager.Instance.input.Player.Move.ReadValue<Vector2>() != Vector2.zero){MonoManager.Instance.StopCoroutine(coroutine);}}}}