public Board(string fen = STARTING_POSITION)
{
foreach (var pieceType in Piece.PIECE_TYPES)
{
pieceList[pieceType] = new List <int>();
}
var fenData = fen.Split(' ');
var rankDataArray = fenData[0].Split('/');
for (int rank = 0; rank < 8; rank++) //rank
{
var rankData = rankDataArray[7 - rank]; //Ranks are stored backwards in fen
int file = 0;
foreach (char datapoint in rankData)
{
if (char.IsNumber(datapoint))
{
file += int.Parse(datapoint.ToString());
}
else
{
var piece = Piece.FromFenString(datapoint);
var pos = rank * 8 + file;
board[pos] = piece;
if (piece != Piece.NONE)
{
MaterialKey.AddPiece(piece, ref materialKey);
pieceList[piece].Add(pos);
if (piece == (Piece.PAWN | Piece.WHITE))
{
WhitePawnBitboard |= 1ul << pos;
}
else if (piece == (Piece.PAWN | Piece.BLACK))
{
BlackPawnBitboard |= 1ul << pos;
}
else if ((piece & Piece.COLOR_MASK) == Piece.WHITE) //White and not a pawn
{
WhitePiecesBitboard |= 1ul << pos;
}
else //Black and not a pawn
{
BlackPiecesBitboard |= 1ul << pos;
}
}
file++;
}
}
}
Us = fenData[1] == "w" ? Piece.WHITE : Piece.BLACK;
Them = Piece.OtherColor(Us);
var castelingRightsString = fenData[2];
if (castelingRightsString.Contains("Q"))
{
CastelingRights |= WHITE_QUEENSIDE_CASTLE;
}
if (castelingRightsString.Contains("K"))
{
CastelingRights |= WHITE_KINGSIDE_CASTLE;
}
if (castelingRightsString.Contains("q"))
{
CastelingRights |= BLACK_QUEENSIDE_CASTLE;
}
if (castelingRightsString.Contains("k"))
{
CastelingRights |= BLACK_KINGSIDE_CASTLE;
}
}
