public static T GetRandomElementWithPredicate <T>(
this IReadOnlyList <T> e,
Func <T, bool> predicate)
{
if (e.Count == 0)
{
return(default(T));
}
int maxValue = 0;
for (int index = 0; index < e.Count; ++index)
{
if (predicate(e[index]))
{
++maxValue;
}
}
if (maxValue == 0)
{
return(default(T));
}
int num = MBRandom.RandomInt(maxValue);
for (int index = 0; index < e.Count; ++index)
{
if (predicate(e[index]))
{
--num;
if (num < 0)
{
return(e[index]);
}
}
}
return(default(T));
}
public static T GetRandomElementWeighted <T>(
this IReadOnlyList <T> e,
Func <T, float> randomWeights)
{
return(e.Count != 0 ? MBRandom.ChooseWeighted <T>((IEnumerable <T>)e, randomWeights) : throw new ArgumentException());
}
public static T GetRandomElementInefficiently <T>(this IEnumerable <T> e) => e.IsEmpty <T>() ? default(T) : e.ElementAt <T>(MBRandom.RandomInt(e.Count <T>()));
public static T GetRandomElement <T>(this T[] e) => e.Length == 0 ? default(T) : e[MBRandom.RandomInt(e.Length)];
public static T GetRandomElement <T>(this IReadOnlyList <T> e) => e.Count == 0 ? default(T) : e[MBRandom.RandomInt(e.Count)];
public static string GetRandomMountKey(ItemObject mountItem, int randomSeed)
{
Random random = new Random(randomSeed);
if (mountItem == null)
{
return(new MountCreationKey((byte)random.Next(4), (byte)random.Next(4), (byte)random.Next(4), (byte)random.Next(4), (byte)0, (byte)0).ToString());
}
HorseComponent horseComponent = mountItem.HorseComponent;
if (horseComponent.HorseMaterialNames == null || horseComponent.HorseMaterialNames.Count <= 0)
{
return(new MountCreationKey((byte)MBRandom.RandomInt(4), (byte)MBRandom.RandomInt(4), (byte)MBRandom.RandomInt(4), (byte)MBRandom.RandomInt(4), (byte)0, (byte)0).ToString());
}
int index1 = random.Next(horseComponent.HorseMaterialNames.Count);
float num1 = random.NextFloat();
int num2 = 0;
float num3 = 0.0f;
HorseComponent.MaterialProperty horseMaterialName = horseComponent.HorseMaterialNames[index1];
for (int index2 = 0; index2 < horseMaterialName.MeshMultiplier.Count; ++index2)
{
num3 += horseMaterialName.MeshMultiplier[index2].Item2;
if ((double)num1 <= (double)num3)
{
num2 = index2;
break;
}
}
return(new MountCreationKey((byte)random.Next(4), (byte)random.Next(4), (byte)random.Next(4), (byte)random.Next(4), (byte)index1, (byte)num2).ToString());
}
public static T ChooseWeighted <T>(IEnumerable <T> candidates, Func <T, float> weightFunction) => MBRandom.ChooseWeighted <T>(candidates, weightFunction, out int _);