public void BeginSearch(string fen, ISearchResults target, TimeSpan timeVailable)
{
var board = CreateBoard(fen);
var eg = EndGameReporter.ReportEndGame(board);
if (eg != GameEnded.None)
{
target.SearchDone(string.Empty, eg);
}
else
{
BackgroundWorker wrk = new BackgroundWorker();
wrk.DoWork += (e, a) =>
{
int bestMove = DoSearch(board, timeVailable);
string move = string.Empty;
if (bestMove != 0)
{
move = MovePackHelper.GetAlgebraicString(bestMove);
}
target.SearchDone(move, EndGameReporter.ReportEndGame(board));
};
wrk.RunWorkerAsync();
}
}
protected override int OnGetBlockingMoves(int start, int[] moves, int[] ray, int rayLen)
{
int begin = start;
for (int i = 0; i < rayLen; ++i)
{
int square = ray[i];
int dir = StraightAttackLookup[Square.Ox88Dist(square, HomeSquare)];
if ((PinStatus == PinStatus.None || PinCompatible(dir)) &&
AttackPathFree(dir, square))
{
int castlingMask = 0;
if (HomeSquare == kingSide)
{
castlingMask = MovePackHelper.GetCastlingMerge(castlingMaskKing & (int)board.CastlingStatus);
}
if (HomeSquare == queenSide)
{
castlingMask = MovePackHelper.GetCastlingMerge(castlingMaskQueen & (int)board.CastlingStatus);
}
moves[start++] = MovePackHelper.Pack(HomeSquare, square) | castlingMask;
}
}
return(start - begin);
}
protected override int OnGetBlockingMoves(int start, int[] moves, int[] ray, int rayLen)
{
int begin = start;
if ((PinStatus == PinStatus.None || (PinStatus & PinStatus.NS) != 0))
{
for (int i = 0; i < rayLen; ++i)
{
int square = ray[i];
if (square - HomeSquare == oneStep)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, square);
if (Square.Rank(square) == lastRank)
{
int prom = moves[start - 1];
moves[start - 1] |= MovePackHelper.GetPromotionMerge(PromotionTo.Queen);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Bishop);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Rook);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Knight);
}
}
if (Square.Rank(HomeSquare) == rankForEp && board.BoardArray[HomeSquare + oneStep] == null && square - HomeSquare == twoStep)
{
moves[start] = MovePackHelper.Pack(HomeSquare, square);
MovePackHelper.GetCleanedMove(moves[start]);
start++;
}
}
}
return(start - begin);
}
public Pawn(Side owner, IChessBoard board, int cell)
: base(owner, board, cell)
{
if (owner == Side.White)
{
oneStep = 16;
twoStep = 32;
rankForEp = 2;
rankForEpCapture = 5;
diag1 = 17;
diag2 = 15;
lastRank = 8;
ZKeys = ZKeysWhite;
}
else
{
oneStep = -16;
twoStep = -32;
rankForEp = 7;
rankForEpCapture = 4;
diag1 = -17;
diag2 = -15;
lastRank = 1;
ZKeys = ZKeysBlack;
}
MovePackHelper.Pack(HomeSquare, HomeSquare + twoStep);
epSquare = HomeSquare + oneStep;
}
protected override int OnGetBlockingMoves(int start, int[] moves, int[] ray, int rayLen)
{
int begin = start;
if (PinStatus == PinStatus.None)
{
for (int i = 0; i < rayLen; ++i)
{
int square = ray[i];
int rd = Square.Rank(square) - Square.Rank(HomeSquare);
int cd = Square.Col(square) - Square.Col(HomeSquare);
if (rd < 0)
{
rd *= -1;
}
if (cd < 0)
{
cd *= -1;
}
if ((cd == 1 && rd == 2) || (cd == 2 && rd == 1))
{
moves[start++] = MovePackHelper.Pack(HomeSquare, square);
}
}
}
return(start - begin);
}
protected override void OnUnMove(int move)
{
if (!MovePackHelper.HasCapture(move))
{
board.ZKey ^= ZKeyForCastling[(int)board.CastlingStatus];
board.CastlingStatus ^= MovePackHelper.GetCastleMask(move);
board.ZKey ^= ZKeyForCastling[(int)board.CastlingStatus];
}
}
protected override void OnMove(int move)
{
if (Square.Rank(MovePackHelper.GetStartSquare(move)) == rankForEp && MovePackHelper.GetEndSquare(move) - MovePackHelper.GetStartSquare(move) == twoStep)
{
board.PlaceEnpassant(epSquare);
}
if ((move & MovePackHelper.EpFlag) != 0)
{
board.Capture(board.BoardArray[MovePackHelper.GetEndSquare(move) - oneStep]);
}
}
protected override void OnUnMove(int move)
{
//if (MovePackHelper.GetStartSquare(move)==epSquare && MovePackHelper.GetEndSquare(move)==epSquare+twoStep)
if (Square.Rank(MovePackHelper.GetStartSquare(move)) == rankForEp && MovePackHelper.GetEndSquare(move) - MovePackHelper.GetStartSquare(move) == twoStep)
{
board.UnplaceEnPassant();
}
if ((move & MovePackHelper.EpFlag) != 0)
{
board.UnCapture(MovePackHelper.GetEndSquare(move) - oneStep);
}
}
protected override int OnGetCaptureMoves(int start, int[] moves, int square)
{
int dir = DiagAttackLookup[Square.Ox88Dist(square, HomeSquare)];
if ((PinStatus == PinStatus.None || PinCompatible(dir)) &&
AttackPathFree(dir, square) &&
board.BoardArray[square] != null &&
IsEnemy(square))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[square]);
return(1);
}
return(0);
}
protected override int DoSearch(IChessBoard board, TimeSpan timeAvail)
{
this.totalMillisec = (int)timeAvail.TotalMilliseconds;
this.board = board;
int bestMove = 0;
int val = 0;
int alpha;
bool timeout = false;
kslot = new long[200];
using (clk = new RunClock())
{
var preOrder = GetPreOrderedMoves();
for (int curDepth = 1; curDepth <= maxDepth; ++curDepth) // iterative deeping
{
alpha = -INFINITE;
var moves = GetBestMoveFirst(bestMove, preOrder);
//var moves = GetMoves(bestMove);
foreach (var m in moves)
{
board.Move(m);
var cm = MovePackHelper.GetAlgebraicString(m);
if (m == bestMove || -AlphaBeta(curDepth - 1, -alpha - 1, -alpha) > alpha)
{
val = -AlphaBeta(curDepth - 1, -INFINITE, -alpha);
}
board.UndoMove();
if (val > alpha)
{
alpha = val;
bestMove = m;
ttable.Save(board.ZKey, curDepth, alpha, TTType.Alpha, m);
}
if (clk.GetElapsedMilliseconds() > timeAvail.TotalMilliseconds / .5)
{
timeout = true;
break;
}
}
if (timeout)
{
break;
}
ttable.Save(board.ZKey, curDepth, alpha, TTType.Alpha, bestMove);
}
}
return(bestMove);
}
protected override int OnGetBlockingMoves(int start, int[] moves, int[] ray, int rayLen)
{
int begin = start;
for (int i = 0; i < rayLen; ++i)
{
int square = ray[i];
int dir = DiagAttackLookup[Square.Ox88Dist(square, HomeSquare)];
if ((PinStatus == PinStatus.None || PinCompatible(dir)) &&
AttackPathFree(dir, square))
{
moves[start++] = MovePackHelper.Pack(HomeSquare, square);
}
}
return(start - begin);
}
int Quiesce(int alpha, int beta, int depth)
{
if (depth == maxQuiesceDepth)
{
return(StaticEval());
}
var moves = GetMoves(0, 0);
IEnumerable <int> selected;
if (board.GetCheckCount(board.ToMove) > 0)
{
if (moves.Count() == 0)
{
return(-INFINITE);//mate
}
//depth -= 1;
selected = moves;
}
else
{
selected = moves.Where(k => (k & MovePackHelper.Capture) != 0 || MovePackHelper.GetPromotion(k) != PromotionTo.None);
}
if (selected.Count() == 0)
{
return(StaticEval());
}
foreach (var move in selected)
{
board.Move(move);
var score = -Quiesce(-beta, -alpha, depth + 1);
board.UndoMove();
if (score > alpha)
{
alpha = score;
}
if (alpha >= beta) // current player move is better than the other one better, no reason to search further
{
//beta cutoff !!!
break;
}
}
return(alpha);
}
private int GetWeight(int m, int best, int k1, int k2)
{
int val = (m & MovePackHelper.GoodCapture) != 0 ? 1000 : 0;
if ((m & MovePackHelper.Capture) != 0 && (m & MovePackHelper.GoodCapture) == 0)
{
val -= 1000;
}
PromotionTo to;
if ((to = MovePackHelper.GetPromotion(m)) != PromotionTo.None)
{
switch (to)
{
case PromotionTo.Queen:
val += 1000;
break;
case PromotionTo.Knight:
val += 500;
break;
case PromotionTo.Bishop:
val -= 1000;
break;
case PromotionTo.Rook:
val -= 1000;
break;
}
}
if (m == k1 || m == k2)
{
val += 5000;
}
if (m == best)
{
val += 10000;
}
return(val);
}
protected override int OnGetCaptureMoves(int start, int[] moves, int square)
{
int begin = start;
if ((square - HomeSquare == diag1 || square - HomeSquare == diag2) &&
IsEnemy(square) && PinCompatible(square - HomeSquare)
)
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[square]);
if (Square.Rank(square) == lastRank)
{
int prom = moves[start - 1];
moves[start - 1] |= MovePackHelper.GetPromotionMerge(PromotionTo.Queen);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Bishop);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Rook);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Knight);
}
}
// ep.
if (Square.Rank(HomeSquare) == rankForEpCapture)
{
if (HomeSquare + diag2 - oneStep == square) // THE CAPTURED ep is the target square
{
if (Square.SquareValid(HomeSquare + diag2) && HomeSquare + diag2 == board.EnPassant && PinCompatible(diag2) && board.CheckIfSafeEpCapture(Owner, HomeSquare))
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + diag2) | MovePackHelper.EpFlag;
}
}
if (HomeSquare + diag1 - oneStep == square) // THE CAPTURED ep is the target square
{
if (Square.SquareValid(HomeSquare + diag1) && HomeSquare + diag1 == board.EnPassant && PinCompatible(diag1) && board.CheckIfSafeEpCapture(Owner, HomeSquare))
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + diag1) | MovePackHelper.EpFlag;
}
}
}
return(start - begin);
}
protected override int OnGetCaptureMoves(int start, int[] moves, int square)
{
if (PinStatus == PinStatus.None)
{
int rd = Square.Rank(square) - Square.Rank(HomeSquare);
int cd = Square.Col(square) - Square.Col(HomeSquare);
if (rd < 0)
{
rd *= -1;
}
if (cd < 0)
{
cd *= -1;
}
if (((cd == 1 && rd == 2) || (cd == 2 && rd == 1)) && IsEnemy(square))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[square]);
return(1);
}
}
return(0);
}
protected override int OnGetMoves(int start, int[] moves)
{
int castling = 0;
castling = MovePackHelper.GetCastlingMerge(castlingMask & (int)board.CastlingStatus);
int begin = start;
foreach (int dest in rose)
{
if (Square.SquareValid(HomeSquare + dest) && (PinEscape(dest) || dest + HomeSquare == Checker.HomeSquare) && !board.InAttack(HomeSquare + dest, Owner))
{
if (board.BoardArray[HomeSquare + dest] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + dest) | castling;
}
else
if (IsEnemy(HomeSquare + dest))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[HomeSquare + dest]) | castling;
}
}
}
if (CheckCount == 0)
{
// castlings
if (0 != ((int)board.CastlingStatus & castlingKing) && CastlingKingSideFree && KingSideUnattacked())
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + EAST + EAST) | castling | MovePackHelper.Castling;
}
if (0 != ((int)board.CastlingStatus & castlingQueen) && CastlingQueenSideFree && QueenSideUnattacked())
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + WEST + WEST) | castling | MovePackHelper.Castling;
}
}
return(start - begin);
}
protected override int OnGetCaptureMoves(int start, int[] moves, int square)
{
int rd = Square.Rank(square) - Square.Rank(HomeSquare);
int cd = Square.Col(square) - Square.Col(HomeSquare);
if (rd == -1)
{
rd *= -1;
}
if (cd == -1)
{
cd *= -1;
}
if (rd <= 1 && cd <= 1 && IsEnemy(square))
{
int castling = MovePackHelper.GetCastlingMerge(castlingMask & (int)board.CastlingStatus);
if (!board.InAttack(square, Owner))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[square]) | castling;
return(1);
}
}
return(0);
}
protected override int OnGetCaptureMoves(int start, int[] moves, int square)
{
int dir = StraightAttackLookup[Square.Ox88Dist(square, HomeSquare)];
if ((PinStatus == PinStatus.None || PinCompatible(dir)) &&
AttackPathFree(dir, square) &&
board.BoardArray[square] != null &&
IsEnemy(square))
{
int castlingMask = 0;
if (HomeSquare == kingSide)
{
castlingMask = MovePackHelper.GetCastlingMerge(castlingMaskKing & (int)board.CastlingStatus);
}
if (HomeSquare == queenSide)
{
castlingMask = MovePackHelper.GetCastlingMerge(castlingMaskQueen & (int)board.CastlingStatus);
}
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[square]) | castlingMask;
return(1);
}
return(0);
}
protected override int OnGetMoves(int start, int[] moves)
{
int begin = start;
if (PinStatus == PinStatus.None)
{
foreach (int dest in rose)
{
if (Square.SquareValid(HomeSquare + dest))
{
if (board.BoardArray[HomeSquare + dest] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + dest);
}
else
if (IsEnemy(HomeSquare + dest))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[HomeSquare + dest]);
}
}
}
}
return(start - begin);
}
protected override int OnGetMoves(int start, int[] moves)
{
int begin = start;
int sq;
//NE
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.SWNE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + NE))
{
sq += NE;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
//NW
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.NWSE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + NW))
{
sq += NW;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
//SW
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.SWNE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + SW))
{
sq += SW;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
//SE
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.NWSE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + SE))
{
sq += SE;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
//NORTH
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.NS) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + NORTH))
{
sq += NORTH;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
//WEST
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.WE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + WEST))
{
sq += WEST;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
//SOUTH
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.NS) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + SOUTH))
{
sq += SOUTH;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
//EAST
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.WE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + EAST))
{
sq += EAST;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq);
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]);
}
break;
}
}
}
return(start - begin);
}
protected override int OnGetMoves(int start, int[] moves)
{
int begin = start;
if (Square.Rank(HomeSquare) != lastRank && board.BoardArray[HomeSquare + oneStep] == null && (PinStatus == PinStatus.None || (PinStatus & PinStatus.NS) != 0))
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + oneStep);
if (Square.Rank(HomeSquare + oneStep) == lastRank)
{
int prom = moves[start - 1];
moves[start - 1] |= MovePackHelper.GetPromotionMerge(PromotionTo.Queen);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Bishop);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Rook);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Knight);
}
if (Square.Rank(HomeSquare) == rankForEp && board.BoardArray[HomeSquare + twoStep] == null)
{
moves[start] = MovePackHelper.Pack(HomeSquare, HomeSquare + twoStep);
MovePackHelper.GetCleanedMove(moves[start]);
start++;
}
}
if (Square.Rank(HomeSquare) != lastRank)
{
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.NS) == 0)
{
if (Square.SquareValid(HomeSquare + diag1) && IsEnemy(HomeSquare + diag1) && PinCompatible(diag1))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[HomeSquare + diag1]);
if (Square.Rank(HomeSquare + diag1) == lastRank)
{
int prom = moves[start - 1];
moves[start - 1] |= MovePackHelper.GetPromotionMerge(PromotionTo.Queen);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Bishop);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Rook);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Knight);
}
}
if (Square.SquareValid(HomeSquare + diag2) && IsEnemy(HomeSquare + diag2) && PinCompatible(diag2))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[HomeSquare + diag2]);
if (Square.Rank(HomeSquare + diag2) == lastRank)
{
int prom = moves[start - 1];
moves[start - 1] |= MovePackHelper.GetPromotionMerge(PromotionTo.Queen);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Bishop);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Rook);
moves[start++] = prom | MovePackHelper.GetPromotionMerge(PromotionTo.Knight);
}
}
// ep.
if (Square.Rank(HomeSquare) == rankForEpCapture)
{
if (Square.SquareValid(HomeSquare + diag2) && HomeSquare + diag2 == board.EnPassant && PinCompatible(diag2) && board.CheckIfSafeEpCapture(Owner, HomeSquare))
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + diag2) | MovePackHelper.EpFlag;
}
if (Square.SquareValid(HomeSquare + diag1) && HomeSquare + diag1 == board.EnPassant && PinCompatible(diag1) && board.CheckIfSafeEpCapture(Owner, HomeSquare))
{
moves[start++] = MovePackHelper.Pack(HomeSquare, HomeSquare + diag1) | MovePackHelper.EpFlag;
}
}
}
}
return(start - begin);
}
protected override int OnGetMoves(int start, int[] moves)
{
int begin = start;
int sq;
//NORTH
int castlingMask = 0;
if (HomeSquare == kingSide)
{
castlingMask = MovePackHelper.GetCastlingMerge(castlingMaskKing & (int)board.CastlingStatus);
}
if (HomeSquare == queenSide)
{
castlingMask = MovePackHelper.GetCastlingMerge(castlingMaskQueen & (int)board.CastlingStatus);
}
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.NS) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + NORTH))
{
sq += NORTH;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq) | castlingMask;
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]) | castlingMask;
}
break;
}
}
}
//WEST
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.WE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + WEST))
{
sq += WEST;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq) | castlingMask;
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]) | castlingMask;
}
break;
}
}
}
//SOUTH
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.NS) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + SOUTH))
{
sq += SOUTH;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq) | castlingMask;
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]) | castlingMask;
}
break;
}
}
}
//EAST
if (PinStatus == PinStatus.None || (PinStatus & PinStatus.WE) != 0)
{
sq = HomeSquare;
while (Square.SquareValid(sq + EAST))
{
sq += EAST;
if (board.BoardArray[sq] == null)
{
moves[start++] = MovePackHelper.Pack(HomeSquare, sq) | castlingMask;
}
else
{
if (IsEnemy(sq))
{
moves[start++] = MovePackHelper.Pack(this, board.BoardArray[sq]) | castlingMask;
}
break;
}
}
}
return(start - begin);
}