时间戳

using UnityEngine;
using System.Collections;
using System;

public class TimeManager
{
    //和服务器时间错的差距
    static int gapTimeWithServer;
    //获得秒级单位的时间戳
    public static int GetEpoch()
    {
        TimeSpan t = ( DateTime.UtcNow - new DateTime( 1970, 1, 1 ) );
         int timestamp  = (int)t.TotalSeconds;
        return timestamp;
    }
    
    //获得毫秒级别单位的时间戳
    public static double GetEpochMill()
    {
        TimeSpan t = ( DateTime.UtcNow - new DateTime( 1970, 1, 1 ) );
        return t.TotalMilliseconds;
    }
    
    public static int GetEpochSyn()
    {
        return TimeManager.GetEpoch() + TimeManager.gapTimeWithServer;
    }
    
    public static int SetTimeSynServer( int timeServer )
    {
        
        int timeClient = TimeManager.GetEpoch();
        gapTimeWithServer = timeServer - timeClient;
        return TimeManager.gapTimeWithServer;
    }
    
    public static int GetFitureSyn( int time )
    {
        int gap = time - GetEpochSyn();
        if( gap < 0 )
        {
            gap = 0;
        }
        return gap;
    }
}