private StandardGamePosition(
[NotNull] PiecePosition piecePosition,
GameSide activeSide,
int fullMoveIndex,
CastlingOptions castlingOptions,
EnPassantCaptureInfo2?enPassantCaptureInfo,
int halfMoveCountBy50MoveRule)
: base(piecePosition, activeSide, fullMoveIndex)
{
if (piecePosition is null)
{
throw new ArgumentNullException(nameof(piecePosition));
}
if (halfMoveCountBy50MoveRule < 0)
{
throw new ArgumentOutOfRangeException(
nameof(halfMoveCountBy50MoveRule),
halfMoveCountBy50MoveRule,
@"The value cannot be negative.");
}
CastlingOptions = castlingOptions;
EnPassantCaptureInfo = enPassantCaptureInfo;
HalfMoveCountBy50MoveRule = halfMoveCountBy50MoveRule;
//// TODO [HarinezumiSama] IMPORTANT: This Zobrist key algorithm is different from the one used in the Polyglot opening book (in the en-passant part)
ZobristKey = PiecePosition.ZobristKey
^ ZobristHashHelper.GetCastlingHash(CastlingOptions)
^ ZobristHashHelper.GetEnPassantHash(
EnPassantCaptureInfo,
PiecePosition[ActiveSide.ToPiece(PieceType.Pawn)])
^ ZobristHashHelper.GetTurnHash(ActiveSide);
}
