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More work on gambling

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Kwoth
2022-07-13 02:21:32 +02:00
parent 0b122e8d3f
commit 5f7b030a66
25 changed files with 481 additions and 522 deletions
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69
src/NadekoBot/Common/NadekoRandom.cs
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@@ -1,69 +0,0 @@
#nullable disable
using System.Security.Cryptography;
namespace NadekoBot.Common;
public class NadekoRandom : Random
{
private readonly RandomNumberGenerator _rng;
public NadekoRandom()
=> _rng = RandomNumberGenerator.Create();
public override int Next()
{
var bytes = new byte[sizeof(int)];
_rng.GetBytes(bytes);
return Math.Abs(BitConverter.ToInt32(bytes, 0));
}
public override int Next(int maxValue)
{
if (maxValue <= 0)
throw new ArgumentOutOfRangeException(nameof(maxValue));
var bytes = new byte[sizeof(int)];
_rng.GetBytes(bytes);
return Math.Abs(BitConverter.ToInt32(bytes, 0)) % maxValue;
}
public override int Next(int minValue, int maxValue)
{
if (minValue > maxValue)
throw new ArgumentOutOfRangeException(nameof(maxValue));
if (minValue == maxValue)
return minValue;
var bytes = new byte[sizeof(int)];
_rng.GetBytes(bytes);
var sign = Math.Sign(BitConverter.ToInt32(bytes, 0));
return (sign * BitConverter.ToInt32(bytes, 0) % (maxValue - minValue)) + minValue;
}
public long NextLong(long minValue, long maxValue)
{
if (minValue > maxValue)
throw new ArgumentOutOfRangeException(nameof(maxValue));
if (minValue == maxValue)
return minValue;
var bytes = new byte[sizeof(long)];
_rng.GetBytes(bytes);
var sign = Math.Sign(BitConverter.ToInt64(bytes, 0));
return (sign * BitConverter.ToInt64(bytes, 0) % (maxValue - minValue)) + minValue;
}
public override void NextBytes(byte[] buffer)
=> _rng.GetBytes(buffer);
protected override double Sample()
{
var bytes = new byte[sizeof(double)];
_rng.GetBytes(bytes);
return Math.Abs((BitConverter.ToDouble(bytes, 0) / double.MaxValue) + 1);
}
public override double NextDouble()
{
var bytes = new byte[sizeof(double)];
_rng.GetBytes(bytes);
return BitConverter.ToDouble(bytes, 0);
}
}