public static BitBoard GetAttacks(this Square square, EPieceType pieceType, BitBoard occupied = new BitBoard())
{
return(pieceType == EPieceType.Knight || pieceType == EPieceType.King
? PseudoAttacksBB[pieceType.AsInt(), square.AsInt()]
: pieceType == EPieceType.Bishop
? square.BishopAttacks(occupied)
: pieceType == EPieceType.Rook
? square.RookAttacks(occupied)
: pieceType == EPieceType.Queen
? square.QueenAttacks(occupied)
: Zero);
}
public static BitBoard GetAttacks(this Square square, EPieceType pieceType, BitBoard occupied = new BitBoard())
{
switch (pieceType)
{
case EPieceType.Knight:
case EPieceType.King:
return(PseudoAttacksBB[pieceType.AsInt(), square.AsInt()]);
case EPieceType.Bishop:
return(square.BishopAttacks(occupied));
case EPieceType.Rook:
return(square.RookAttacks(occupied));
case EPieceType.Queen:
return(square.QueenAttacks(occupied));
default:
return(EmptyBitBoard);
}
}
public static BitBoard KingRing(this Square sq, Player side) => KingRingBB[side.Side, sq.AsInt()];
public static BitBoard Line(this Square s1, Square s2) => LineBB[s1.AsInt(), s2.AsInt()];
public static BitBoard BitboardBetween(this Square firstSquare, Square secondSquare) => BetweenBB[firstSquare.AsInt(), secondSquare.AsInt()];
public static BitBoard ForwardRanks(this Square @this, Player side) => ForwardRanksBB[side.Side, @this.AsInt()];
public static BitBoard PassedPawnFrontAttackSpan(this Square @this, Player side) => PassedPawnMaskBB[side.Side, @this.AsInt()];
public static BitBoard PawnAttackSpan(this Square @this, Player side) => PawnAttackSpanBB[side.Side, @this.AsInt()];
public static File File(this Square s) => s.AsInt() & 7;
public static ref BitBoard PseudoAttack(this Square @this, EPieceType pieceType) => ref PseudoAttacksBB[pieceType.AsInt(), @this.AsInt()];
public static BitBoard KingAttacks(this Square square) => PseudoAttacksBB[EPieceType.King.AsInt(), square.AsInt()];
public static Rank Rank(this Square s) => (ERank)(s.AsInt() >> 3);
internal static Square GetRookCastleTo(this Square square) => RookCastlesTo[square.AsInt()];
public static BitBoard BitBoardSquare(this Square sq) => BitBoards.BbSquares[sq.AsInt()];
public static string GetSquareString(this Square s) => SquareStrings[s.AsInt()];
public static byte Distance(this Square source, Square destination) => SquareDistance[source.AsInt(), destination.AsInt()];
public static BitBoard DistanceRing(this Square square, int length) => DistanceRingBB[square.AsInt(), length];
public static ref BitBoard PawnAttack(this Square @this, Player side) => ref PseudoAttacksBB[side.Side, @this.AsInt()];