75 lines
1.8 KiB
C#
75 lines
1.8 KiB
C#
using StgSharp.Controlling;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Runtime.CompilerServices;
|
|
using System.Text;
|
|
|
|
namespace StgSharp.Math
|
|
{
|
|
public static unsafe partial class Scaler
|
|
{
|
|
|
|
internal static float currentSeed
|
|
#if DEBUG
|
|
= 0.5f;
|
|
#else
|
|
= Calc.Abs(System.DateTime.UtcNow.GetHashCode());
|
|
#endif
|
|
|
|
/// <summary>
|
|
///
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public static float Random()
|
|
{
|
|
throw new NotImplementedException();
|
|
}
|
|
|
|
/// <summary>
|
|
/// returns a random float number between 0 and 1.
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
public static unsafe float LowProceisionRandom()
|
|
{
|
|
float seed = currentSeed;
|
|
|
|
float sample = Scaler.Pow(Scaler.SeedSqrt(seed), 2);
|
|
float sample2 = (sample - seed) / seed;
|
|
sample2 = Scaler.Abs(sample2);
|
|
|
|
if (sample == 1)
|
|
{
|
|
sample = sample2;
|
|
}
|
|
|
|
currentSeed = sample;
|
|
sample2 *= 1000000;
|
|
|
|
float result = sample2 - (int)sample2;
|
|
if (result == 0)
|
|
{
|
|
currentSeed = sample2 + 0.1f;
|
|
result = Scaler.LowProceisionRandom();
|
|
}
|
|
return result;
|
|
|
|
}
|
|
|
|
/// <summary>
|
|
/// Generates a random seed in int value.
|
|
/// </summary>
|
|
/// <returns></returns>
|
|
public static unsafe int RandomSeed()
|
|
{
|
|
float seedValue1 = LowProceisionRandom();
|
|
float seedValue2 = LowProceisionRandom();
|
|
uint seedValueBits = *(uint*)&seedValue1;
|
|
|
|
float seedValue = seedValueBits * seedValue2;
|
|
|
|
return *(int*)&seedValue;
|
|
}
|
|
}
|
|
}
|