/// <summary>
/// Determines if something happens based on a per mille chance.
/// </summary>
/// <param name="chance">The chance of something happening, between 0 and 1000.</param>
/// <returns>Should something happen?</returns>
public static bool PerMilleChance(double chance, PRNG prng = null)
{
return(Range(0d, 1000d, prng) < chance);
}
/// <summary>
/// Generates a random number within a range (inclusive).
/// </summary>
/// <param name="min">The minimum.</param>
/// <param name="max">The maximum.</param>
/// <returns></returns>
public static double Range(double min, double max, PRNG prng = null)
{
return((prng ?? PRNG).Range(min, max));
}
static RandomHelper()
{
PRNG = new PRNG((int)DateTime.Now.Ticks);
}
/// <summary>
/// Generates a random number within a range (inclusive).
/// </summary>
/// <param name="min">The minimum.</param>
/// <param name="max">The maximum.</param>
/// <returns></returns>
public static long Range(long min, long max, PRNG prng = null)
{
return((prng ?? PRNG).Range(min, max));
}
/// <summary>
/// Generates a random number within a range (inclusive).
/// </summary>
/// <param name="min">The minimum.</param>
/// <param name="max">The maximum.</param>
/// <returns></returns>
public static int Range(int min, int max, PRNG prng = null)
{
return((prng ?? PRNG).Range(min, max));
}
/// <summary>
/// Generates a random number >= 0 but less than the upper bound.
/// </summary>
/// <param name="upper">The upper bound.</param>
/// <returns></returns>
public static double Next(double upper, PRNG prng = null)
{
return((prng ?? PRNG).Next(upper));
}
/// <summary>
/// Generates a random number >= 0 but less than the upper bound.
/// </summary>
/// <param name="upper">The upper bound.</param>
/// <returns></returns>
public static long Next(long upper, PRNG prng = null)
{
return((prng ?? PRNG).Next(upper));
}
/// <summary>
/// Generates a random number >= 0 but less than the upper bound.
/// </summary>
/// <param name="upper">The upper bound.</param>
/// <returns></returns>
public static int Next(int upper, PRNG prng = null)
{
return((prng ?? PRNG).Next(upper));
}