public static LightList ConvertBuffer(BoardBuffer bf)
{
LightList ll = new LightList();
for (int i = 0; i < bf.capCount; ++i)
{
ll.Add(bf.captures[i]);
}
for (int i = 0; i < bf.thrCount; ++i)
{
ll.Add(bf.threats[i]);
}
for (int i = 0; i < bf.forCount; ++i)
{
ll.Add(bf.forward[i]);
}
for (int i = 0; i < bf.oCount; ++i)
{
ll.Add(bf.other[i]);
}
for (int i = 0; i < bf.nsCount; ++i)
{
ll.Add(bf.notSafe[i]);
}
return ll;
}
public static void AddKingMoves(this byte[] board, bool white, int i, ref BoardBuffer moves, bool allowCheck)
{
byte[] temp;
if (white)
IsOpponent = IsLower;
else
IsOpponent = IsUpper;
int idx = i + UPLEFT;
if (idx < OUTOFBOUNDSHIGH)
{
if (idx % COLUMN != COL8 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
{
if (!white)
{
moves.AddForward(temp);
}
else
moves.Add(temp);
}
}
if (board.IsValidMove(white, ++idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
{
if (!white)
{
moves.AddForward(temp);
}
else
moves.Add(temp);
}
}
if (++idx % COLUMN != COL1 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
{
if (!white)
{
moves.AddForward(temp);
}
else
moves.Add(temp);
}
}
}
idx = i + RIGHT;
if (idx % COLUMN != COL1 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
moves.Add(temp);
}
idx = i + LEFT;
if (idx % COLUMN != COL8 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
moves.Add(temp);
}
idx = i + DOWNRIGHT;
if (idx > -1)
{
if (i % COLUMN != COL8 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
{
if (white)
{
moves.AddForward(temp);
}
else
moves.Add(temp);
}
}
if (board.IsValidMove(white, --idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
{
if (white)
{
moves.AddForward(temp);
}
else
moves.Add(temp);
}
}
if (i % COLUMN != COL1 && board.IsValidMove(white, --idx))
{
temp = board.Move(i, idx);
if (allowCheck || !PieceNotSafe(temp, idx, white))
{
if (white)
{
moves.AddForward(temp);
}
else
moves.Add(temp);
}
}
}
}
public static void AddKnightMoves(this byte[] board, bool white, int i, ref BoardBuffer moves, bool allowCheck)
{
int originRow = i % COLUMN;
int idx = i + UPUPRIGHT;
byte[] temp;
if (idx < OUTOFBOUNDSHIGH && originRow < COL8 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (!white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
idx = i + UPUPLEFT;
if (idx < OUTOFBOUNDSHIGH && originRow > COL1 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (!white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
idx = i + UPRIGHTRIGHT;
if (idx < OUTOFBOUNDSHIGH && originRow < COL7 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (!white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
idx = i + UPLEFTLEFT;
if (idx < OUTOFBOUNDSHIGH && originRow > COL2 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (!white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
idx = i + DOWNDOWNLEFT;
if (idx > OUTOFBOUNDSLOW && originRow > COL1 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
idx = i + DOWNDOWNRIGHT;
if (idx > OUTOFBOUNDSLOW && originRow < COL8 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
idx = i + DOWNLEFTLEFT;
if (idx > OUTOFBOUNDSLOW && originRow > COL2 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
idx = i + DOWNRIGHTRIGHT;
if (idx > OUTOFBOUNDSLOW && originRow < COL7 && board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
if (allowCheck || !InCheck(temp, white))
{
if (white ? board[idx].IsLower() : board[idx].IsUpper())
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (KnightThreat(temp, idx))
moves.AddThreat(temp);
else if (white)
moves.AddForward(temp);
else
moves.Add(temp);
}
}
}
public static void AddDiagonalMaps(this byte[] board, bool white, int i, ref BoardBuffer moves, bool allowCheck)
{
byte[] temp;
int idx = i + UPLEFT;
while (idx < OUTOFBOUNDSHIGH && idx % COLUMN != COL8)
{
if (IsValidMove(board, white, idx))
{
temp = board.Move(i, idx);
bool cap = board.TakesOpponentPiece(white, idx);
if (allowCheck || !InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (DiagThreat(temp, idx))
moves.AddThreat(temp);
else if (!white)
moves.AddForward(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
idx += UPLEFT;
}
idx = i + UPRIGHT;
while (idx < OUTOFBOUNDSHIGH && idx % COLUMN != COL1)
{
if (IsValidMove(board, white, idx))
{
temp = board.Move(i, idx);
bool cap = board.TakesOpponentPiece(white, idx);
if (allowCheck || !InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (DiagThreat(temp, idx))
moves.AddThreat(temp);
else if (!white)
moves.AddForward(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
idx += UPRIGHT;
}
idx = i + DOWNLEFT;
while (idx > OUTOFBOUNDSLOW && idx % COLUMN != COL8)
{
if (board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
bool cap = board.TakesOpponentPiece(white, idx);
if (allowCheck || !InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (DiagThreat(temp, idx))
moves.AddThreat(temp);
else if (white)
moves.AddForward(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
idx += DOWNLEFT;
}
idx = i + DOWNRIGHT;
while (idx > OUTOFBOUNDSLOW && idx % COLUMN != 0)
{
if (board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
bool cap = board.TakesOpponentPiece(white, idx);
if (allowCheck || !InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (DiagThreat(temp, idx))
moves.AddThreat(temp);
else if (white)
moves.AddForward(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
idx += DOWNRIGHT;
}
}
public static void AddAdjacentMaps(this byte[] board, bool white, int i, ref BoardBuffer moves, bool allowCheck)
{
int idx = i + UP;
byte[] temp;
while (idx < OUTOFBOUNDSHIGH)
{
if (board.IsValidMove(white, idx))
{
temp = board.Move(i, idx);
bool cap = board.TakesOpponentPiece(white, idx);
if (!InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (AdjacentThreat(temp, idx))
moves.AddThreat(temp);
else if (!white)
moves.AddForward(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
idx += UP;
}
idx = i + DOWN;
while (idx > OUTOFBOUNDSLOW)
{
if (IsValidMove(board, white, idx))
{
temp = board.Move(i, idx);
bool cap = board.TakesOpponentPiece(white, idx);
if (!InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, idx, white))
moves.AddUnSafe(temp);
else if (AdjacentThreat(temp, idx))
moves.AddThreat(temp);
else if (white)
moves.AddForward(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
idx += DOWN;
}
idx = i % COLUMN;
int bse = i - idx;
while (--idx > -1)
{
int ix = bse + idx;
if (IsValidMove(board, white, ix))
{
temp = board.Move(i, ix);
bool cap = board.TakesOpponentPiece(white, ix);
if (!InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, ix, white))
moves.AddUnSafe(temp);
else if (AdjacentThreat(temp, ix))
moves.AddThreat(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
}
idx = i % COLUMN;
bse = i - idx;
while (++idx < 8)
{
int ix = bse + idx;
if (IsValidMove(board, white, ix))
{
temp = board.Move(i, ix);
bool cap = board.TakesOpponentPiece(white, ix);
if (!InCheck(temp, white))
{
if (cap)
moves.AddCapture(temp);
else if (PieceNotSafe(temp, ix, white))
moves.AddUnSafe(temp);
else if (AdjacentThreat(temp, ix))
moves.AddThreat(temp);
else
moves.Add(temp);
}
if (cap)
break;
}
else break;
}
}
public static LightList GetAvailableMoves(byte[] board, ChessColor color, bool allowCheck)
{
bool white = color == ChessColor.White;
LightList moves = new LightList();
BoardBuffer buff = new BoardBuffer();
//iterate thru entire board {64} including row delimiters {7}
for (int i = 0; i < OUTOFBOUNDSHIGH; ++i)
{
if (!white)
{
switch (board[i])
{
case 0x02:
board.AddPawnMoves(white, i, ref buff, allowCheck);
break;
case 0x04:
board.AddAdjacentMaps(white, i, ref buff, allowCheck);
break;
case 0x06:
board.AddDiagonalMaps(white, i, ref buff, allowCheck);
break;
case 0x08:
board.AddKnightMoves(white, i, ref buff, allowCheck);
break;
case 0x0A:
board.AddAdjacentMaps(white, i, ref buff, allowCheck);
board.AddDiagonalMaps(white, i, ref buff, allowCheck);
break;
case 0x0C:
board.AddKingMoves(white, i, ref buff, allowCheck);
break;
default: break;
}
}
else
{
switch (board[i])
{
case 0x01:
board.AddPawnMoves(white, i, ref buff, allowCheck);
break;
case 0x03:
board.AddAdjacentMaps(white, i, ref buff, allowCheck);
break;
case 0x05:
board.AddDiagonalMaps(white, i, ref buff, allowCheck);
break;
case 0x07:
board.AddKnightMoves(white, i, ref buff, allowCheck);
break;
case 0x09:
board.AddAdjacentMaps(white, i, ref buff, allowCheck);
board.AddDiagonalMaps(white, i, ref buff, allowCheck);
break;
case 0x0B:
board.AddKingMoves(white, i, ref buff, allowCheck);
break;
default: break;
}
}
}
return LightList.ConvertBuffer(buff);
}
public static void AddPawnMoves(this byte[] board, bool white, int i, ref BoardBuffer moves, bool allowCheck)
{
byte[] temp;
if (!white)
{
if (i / COLUMN == 1)
{
if (board[i + UPUP] == _ && board[i + UP] == _)
{
temp = board.MovePawn(i, i + UPUP, white);
if (allowCheck || allowCheck || !InCheck(temp, white))
{
if (PawnThreat(temp, i + UPUP))
moves.AddCapture(temp);
else
moves.AddForward(temp);
}
}
}
if (board[i + UP] == _)
{
temp = board.MovePawn(i, i + UP, white);
if (allowCheck || !InCheck(temp, white))
{
if (PawnThreat(temp, i + UP))
moves.AddCapture(temp);
else
moves.AddForward(temp);
}
}
if (board[i + UPLEFT].IsUpper() && (i+UPLEFT) % COLUMN != COL8)
{
temp = board.MovePawn(i, i + UPLEFT, white);
if (allowCheck || !InCheck(temp, white))
moves.AddCapture(temp);
}
if (i < 54 && board[i + UPRIGHT].IsUpper() && (i+UPRIGHT) % COLUMN != COL1)
{
temp = board.MovePawn(i, i + UPRIGHT, white);
if (allowCheck || !InCheck(temp, white))
moves.AddCapture(temp);
}
}
else
{
if (i / COLUMN == COL7)
{
if (board[i + DOWNDOWN] == _ && board[i + DOWN] == _)
{
temp = board.MovePawn(i, i + DOWNDOWN, white);
if (allowCheck || !InCheck(temp, white))
{
if (PawnThreat(temp, i + DOWNDOWN))
moves.AddCapture(temp);
else
moves.AddForward(temp);
}
}
}
if (board[i + DOWN] == _)
{
temp = board.MovePawn(i, i + DOWN, white);
if (allowCheck || !InCheck(temp, white))
{
if (PawnThreat(temp, i + DOWN))
moves.AddCapture(temp);
else
moves.AddForward(temp);
}
}
if (board[i + DOWNRIGHT].IsLower() && (i+DOWNRIGHT) % COLUMN != COL1)
{
temp = board.MovePawn(i, i + DOWNRIGHT, white);
if (allowCheck || !InCheck(temp, white))
moves.AddCapture(temp);
}
if (i > 8 && board[i + DOWNLEFT].IsLower() && (i+DOWNLEFT) % COLUMN != COL8)
{
temp = board.MovePawn(i, i + DOWNLEFT, white);
if (!InCheck(temp, white))
moves.AddCapture(temp);
}
}
}