pkNX/pkNX.Randomization/Randomizers/GenericRandomizer.cs

namespace pkNX.Randomization
{
    /// <summary> Cyclical Shuffled Randomizer </summary>
    /// <remarks>
    /// The shuffled list is iterated over, and reshuffled when exhausted.
    /// The list does not repeat values until the list is exhausted.
    /// </remarks>
    public class GenericRandomizer<T>
    {
        public GenericRandomizer(T[] randomValues)
        {
            RandomValues = randomValues;
        }

        private readonly T[] RandomValues;
        private int ctr;
        public int Count => RandomValues.Length;

        public void Reset()
        {
            ctr = 0;
            Util.Shuffle(RandomValues);
        }

        public T Next()
        {
            if (ctr == 0)
                Util.Shuffle(RandomValues);

            T value = RandomValues[ctr++];
            ctr %= RandomValues.Length;
            return value;
        }

        public T[] GetMany(int count)
        {
            var arr = new T[count];
            for (int i = 0; i < arr.Length; i++)
                arr[i] = Next();
            return arr;
        }
    }
}