// Takes ownership of all arrays passed to it; they should not be changed after the position is created.
public Position(Piece[] pieceSquares, Color sideToMove, ulong castlingRights, ulong enPassant, int fiftyMoveCounter, int fullMove)
{
_pieceBitboards = new BitboardArray();
_squares = new PieceSquareArray();
// safer to go by the length the PieceSquareArray, because the Piece[] will always error on index out of bounds
for (int i = 0; i < _squares.Length; i++)
{
_squares[i] = pieceSquares[i];
}
PopulatePieceBitboardsFromSquares(ref _pieceBitboards, pieceSquares);
_occupiedWhite = CalculateOccupied(Color.White);
_occupiedBlack = CalculateOccupied(Color.Black);
_occupied = _occupiedWhite | _occupiedBlack;
Parent = null;
SideToMove = sideToMove;
CastlingRights = castlingRights;
EnPassant = enPassant;
FiftyMoveCounter = fiftyMoveCounter;
GamePly = GamePlyFromFullMove(fullMove, sideToMove);
_historyPly = 0;
RepetitionNumber = 1;
ZobristHash = ZobristHashing.CalculateFullHash(this);
}
public Position()
{
_pieceBitboards = new BitboardArray();
_squares = new PieceSquareArray();
}
// would need to copy the contents if this were an array
private void CopySquares(ref PieceSquareArray ret)
{
ret = _squares;
}
