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36 lines
1.3 KiB
36 lines
1.3 KiB
4 years ago
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Threading;
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using UnityEngine;
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public partial class UIdSystem : MonoBehaviour
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{
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private static class GUID
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{
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private static ulong TimestampMask = 0xffffffff00000000; //时间戳掩码
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private static ulong BigMask = 0x00000000f0000000; //大区号掩码
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private static ulong SmallMask = 0x000000000ff00000; //小区号掩码
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private static ulong BaseMask = 0x00000000000fffff; //本地 ID 编号掩码
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private static int BaseId = 0; //本地 ID
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private static readonly DateTime Jan1st1970 = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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/// <summary>
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/// 根据大区号和小区号生成 ID。
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/// </summary>
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public static ulong NewGuid(uint big = 0, uint small = 0)
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{
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ulong timeStamp = (ulong)(DateTime.UtcNow - Jan1st1970).TotalSeconds;
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ulong newId = ((timeStamp << 32) & TimestampMask) |
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((big << 28) & BigMask) |
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((small << 20) & SmallMask) |
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((uint)BaseId & BaseMask);
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Interlocked.Increment(ref BaseId);
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return newId;
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}
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}
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}
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