计时器（C#）

很多项目要用到计时器，我就自己包装了一个，倒计时还没加，有时间再加上吧。持续更新

using UnityEngine;
using UnityEngine.UI;
/// <summary>
/// 实现一个计时器
/// </summary>
public class Timing : MonoBehaviour
{
    /// <summary>
    /// 单例模式
    /// </summary>
    public static Timing time;

    private Text timeText;
    /// <summary>
    /// 小时，分钟，秒的数值
    /// </summary>
    private float s = ;
    private int h = ;
    private int m = ;

    //控制是否需要计时
    public bool isTiming = false ;

    void Awake()
    {
        time = this;
    }
    // Use this for initialization
    void Start()
    {

    }

    // Update is called once per frame
    void Update()
    {
        if (isTiming)
        {
            TimingUpdate();
        }
    }
    public void TimingUpdate()
    {
        s = s + Time.deltaTime;
        if (s >= )
        {
            s -= ;
            m = m + ;
            if (m == )
            {
                m -= ;
                h += ;
            }
        }
        textFunc();
    }
    /// <summary>
    /// 更新时间并更新显示
    /// </summary>
    public void textFunc()
    {
        if(timeText != null)
          timeText.text = ToString(h, true) + ToString(m, true) + ToString((int)s, false);
    }
    public string ToString(int i,bool isNeed)
    {
        string x = "";
        if (i < )
        {
            x = "" + i;
        }
        else
        {
            x = i.ToString();
        }
        if (isNeed)
            x += ":";
        return x;
    }
    /// <summary>
    /// 暂停计时,调用continueTimingFunc会接着上一次继续计时
    /// </summary>
    public void pauseTimingFunc()
    {
        isTiming = false;
    }
    /// <summary>
    /// 继续计时
    /// </summary>
    public void continueTimingFunc()
    {
        isTiming = true;
    }
  /// <summary>
  /// 开始计时
  /// </summary>
  /// <param name="t">要改变的TEXT组件</param>
    public void startTimingFunc(Text t)
    {
        isTiming = true;
        timeText = t;
    }
    /// <summary>
    /// 结束计时，会清空当前计时时间
    /// </summary>
    public void stopTimingFunc()
    {
        isTiming = false;
        s = ;
        m = ;
        h = ;
    }
}