Unity框架之计时器

在学习一项新事物前，要先了解我们的需求是什么，为什么需要计时器。我在试图做ACT游戏demo时，想要给角色加上技能冷却CD，在CD时间内角色不能释放技能，CD后才可以。于是有了需求就开始制作计时器吧。

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计时器主体脚本:

using System;
using UnityEngine;

public enum TimerWorkState
{
    NONE,
    WORKERING,
    DONE
}

public class GameTimer
{
    private float _startTime;
    private bool _stop;
    private Action _action;
    public TimerWorkState _state;

    public GameTimer()
    {
        ResetTimer();
    }

    /// <summary>
    /// 唤醒一个计时器
    /// </summary>
    /// <param name="time">计时时长</param>
    /// <param name="task">任务</param>
    public void CallOut(float time, Action task)
    {
        _startTime = time;
        _action = task;
        _stop = false;
        _state = TimerWorkState.WORKERING;
    }

    public void Working()
    {
        _startTime -= Time.deltaTime;
        if (_startTime < 0)
        {
            _action.Invoke();
            _stop = true;
            _state = TimerWorkState.DONE;
        }
    }
    public TimerWorkState GetTimerState() => _state;

    public void ResetTimer()
    {
        _startTime = 0f;
        _stop = true;
        _action = null;
        _state = TimerWorkState.NONE;
    }
}

计时器管理器：

using System;
using System.Collections.Generic;
using System.Threading;
using UnityEngine;
using UnityEngine.UIElements;

public class TimerManager : SingleMono<TimerManager>
{
    private List<GameTimer> _activeTimers = new List<GameTimer>();
    private Queue<GameTimer> _dormancyTimers = new Queue<GameTimer>();
    [SerializeField] private int _howManyTimer;
    private void Awake()
    {
        InitTimer(_howManyTimer);
    }

    private void Update()
    {
        TimerWork();
    }

    //初始化计时器
    private void InitTimer(int timer)
    {
        for (int i = 0; i < timer; i++)
        {
            GameTimer timer1 = new GameTimer();
            _dormancyTimers.Enqueue(timer1);
        }
    }

    public void TryGetOneTimer(float time,Action action)
    {
        if(_dormancyTimers.Count == 0)
        {
            GameTimer timer = new GameTimer();
            timer.CallOut(time, action);
            _activeTimers.Add(timer);
        }
        else
        {
            GameTimer timer = _dormancyTimers.Dequeue();
            timer.CallOut(time, action); ;
            _activeTimers.Add(timer);
        }
    }

    private void TimerWork()
    {
        if(_activeTimers.Count == 0) return;
        for (int i = 0; i < _activeTimers.Count; i++)
        {
            if(_activeTimers[i].GetTimerState() == TimerWorkState.WORKERING)
            {
                _activeTimers[i].Working();
            }
            else
            {
                _dormancyTimers.Enqueue(_activeTimers[i]);
                _activeTimers[i].ResetTimer();
                _activeTimers.Remove(_activeTimers[i]);
            }
        }
    }
}