pkNX/pkNX.Structures/EggMove/EggMoves2.cs

using System;
using System.Linq;

namespace pkNX.Structures
{
    public sealed class EggMoves2 : EggMoves
    {
        private EggMoves2(byte[] data) : base(data.Select(i => (int)i).ToArray()) { }

        public static EggMoves[] GetArray(byte[] data, int count)
        {
            int[] ptrs = new int[count + 1];
            int baseOffset = (data[1] << 8 | data[0]) - (count * 2);
            for (int i = 1; i < ptrs.Length; i++)
            {
                var ofs = (i - 1) * 2;
                ptrs[i] = (data[ofs + 1] << 8 | data[ofs]) - baseOffset;
            }

            EggMoves[] entries = new EggMoves[count + 1];
            entries[0] = new EggMoves2(Array.Empty<byte>());
            for (int i = 1; i < entries.Length; i++)
                entries[i] = new EggMoves2(data.Skip(ptrs[i]).TakeWhile(b => b != 0xFF).ToArray());

            return entries;
        }
    }
}