Unity——計時器功能實現

小紫蘇xw發表於2021-10-25
Unity

Unity計時器

Demo展示

介紹

遊戲中有非常多的計時功能，比如:各種cd,以及需要延時呼叫的方法；

一般實現有一下幾種方式：

1.手動計時

float persistTime = 10f
float startTime = Time.time;
if(Time.time - startTime > persistTime)
{
	Debug.Log("計時結束");
}

float curTime = 0;
curTime += Time.deltaTime;
if(curTime > persistTime)
{
    Debug.Log("計時結束");
}

2.協程

private float persistTime = 10f;
IEnumerator DelayFunc()
{
    yield return persistTime;
    Debug.Log("計時結束");
}

private void Start()
{
    StartCoroutine(DelayFunc());
}

3.Invoke回撥

private void Start()
{
    Invoke("DelayFunc", persistTime);
}

計時器功能

計時是為了到特定的時間，執行某個功能或方法；

計時器（Timer）：設計了計時暫停，計時重置，計時開始方法，計時中方法，計時結束方法，固定間隔呼叫方法，計時器可設定複用或單次；

計時管理器（TimerMa）：負責倒數計時，以及執行計時器方法；

程式碼：

using System;
using System.Collections.Generic;
using UnityEngine;
using Object = System.Object;

public class Timer
{
    public delegate void IntervalAct(Object args);
    //總時間和當前持續時間
    private float curtime = 0;
    private float totalTime = 0;

    //啟用
    public bool isActive;
    //計時結束是否銷燬
    public bool isDestroy;
    //是否暫停
    public bool isPause;

    //間隔事件和間隔事件——Dot
    private float intervalTime = 0;
    private float curInterval = 0;
    private IntervalAct onInterval;
    private Object args;
 
    //進入事件
    public Action onEnter;
    private bool isOnEnter = false;
    //持續事件
    public Action onStay;
    //退出事件
    public Action onEnd;

    public Timer(float totalTime, bool isDestroy = true, bool isPause = false)
    {
        curtime = 0;
        this.totalTime = totalTime;
        isActive = true;
        this.isDestroy = isDestroy;
        this.isPause = isPause;
        TimerMa.I.AddTimer(this);
    }

    public void Run()
    {
        //暫停計時
        if (isPause || !isActive)
            return;

        if (onEnter != null)
        {
            if (!isOnEnter)
            {
                isOnEnter = true;
                onEnter();
            }
        }

        //持續事件
        if (onStay != null)
            onStay();
        
        curtime += Time.deltaTime;

        //間隔事件
        if (onInterval != null)
        {
            curInterval += Time.deltaTime;
            if (curInterval > intervalTime)
            {
                onInterval(args);
                curInterval = 0;
            }
        }

        //計時結束
        if (curtime > totalTime)
        {
            curtime = 0;
            isActive = false;
            if (onEnd != null)
            {
                onEnd();
            }
        }   
    }
    
    //設定間隔事件
    public void SetInterval(float interval, IntervalAct intervalFunc, Object args = null)
    {
        this.intervalTime = interval;
        onInterval = intervalFunc;
        curInterval = 0;
        this.args = args;
    }
    
    //重置計時器
    public void Reset()
    {
        curtime = 0;
        isActive = true;
        isPause = false;
        curInterval = 0;
        isOnEnter = false;
    }
    
    //獲取剩餘時間
    public float GetRemainTime()
    {
        return totalTime - curtime;
    }
}

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

public class TimerMa : MonoBehaviour
{
    #region 單例

    private static TimerMa instance;
    TimerMa() {}

    public static TimerMa I
    {
        get
        {
            if (instance == null)
                instance = new TimerMa();
            return instance;
        }
    }

    #endregion
    private List<Timer> timerList;

    private void Awake()
    {
        instance = this;
        timerList = new List<Timer>();
    }

    public void AddTimer(Timer t)
    {
        timerList.Add(t);
    }

    void Update()
    {
        for (int i = 0; i < timerList.Count;)
        {
            timerList[i].Run();
            
            //計時結束，且需要銷燬
            if(!timerList[i].isActive && timerList[i].isDestroy)
                timerList.RemoveAt(i);
            else
                ++i;
        }
    }
}

測試計時器

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using Object = System.Object;

public class Test : MonoBehaviour
{
    public Text mText1;
    public Text mText2;
    private Timer timer;
    private int count = 0;
    
    void Start()
    {
        timer = new Timer(5f,false);
        timer.SetInterval(1f, OnInterval);
        timer.onEnter = OnStart;
        timer.onEnd = OnExit;
    }
    
    void Update()
    {
        Debug.Log(count);
        mText1.text = timer.GetRemainTime().ToString("f2");

        if (Input.GetKeyDown(KeyCode.A))
        {
            if (!timer.isPause)
            {
                timer.isPause = true;
                mText2.text = "暫停計時";
            }
        }
        
        if (Input.GetKeyDown(KeyCode.S))
        {
            if (timer.isPause)
            {
                timer.isPause = false;
                mText2.text = "取消暫停計時";
            }
        }

        if (Input.GetKeyDown(KeyCode.D))
        {
            timer.Reset();
            mText2.text = "重置計時";
        }
    }

    private void OnStart()
    {
        mText2.text = "開始計時";
    }
    
    private void OnExit()
    {
        mText2.text = "結束計時";
    }

    private void OnInterval(Object value)
    {
        count++;
        mText2.text = $"間隔事件呼叫{count}";
    }
}

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