space-pew/Lidgren.Network/NetRandomSeed.cs

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C#
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2015-12-04 10:23:49 +01:00
using System;
using System.Threading;
namespace Lidgren.Network
{
/// <summary>
/// Class for generating random seeds
/// </summary>
public static class NetRandomSeed
{
private static int m_seedIncrement = -1640531527;
/// <summary>
/// Generates a 32 bit random seed
/// </summary>
[CLSCompliant(false)]
public static uint GetUInt32()
{
ulong seed = GetUInt64();
uint low = (uint)seed;
uint high = (uint)(seed >> 32);
return low ^ high;
}
/// <summary>
/// Generates a 64 bit random seed
/// </summary>
[CLSCompliant(false)]
public static ulong GetUInt64()
{
#if !__ANDROID__ && !IOS && !UNITY_WEBPLAYER && !UNITY_ANDROID && !UNITY_IPHONE
ulong seed = (ulong)System.Diagnostics.Stopwatch.GetTimestamp();
seed ^= (ulong)Environment.WorkingSet;
ulong s2 = (ulong)Interlocked.Increment(ref m_seedIncrement);
s2 |= (((ulong)Guid.NewGuid().GetHashCode()) << 32);
seed ^= s2;
#else
ulong seed = (ulong)Environment.TickCount;
seed |= (((ulong)(new object().GetHashCode())) << 32);
ulong s2 = (ulong)Guid.NewGuid().GetHashCode();
s2 |= (((ulong)Interlocked.Increment(ref m_seedIncrement)) << 32);
seed ^= s2;
#endif
return seed;
}
}
}