//*********************************************************
//
/// <summary>
/// Reset initial board info
/// </summary>
/// <param name="eNextMoveColor"> Next color moving</param>
/// <param name="bInitialBoardStd"> true if its a standard board, false if coming from FEN or design mode</param>
/// <param name="eMask"> Extra bord information</param>
/// <param name="iEnPassant"> Position for en passant</param>
//
//*********************************************************
private void ResetInitialBoardInfo(PlayerColorE eNextMoveColor, bool bInitialBoardStd, BoardStateMaskE eMask, int iEnPassant) {
PieceE ePiece;
for (int iIndex = 0; iIndex < m_piPiecesCount.Length; iIndex++) {
m_piPiecesCount[iIndex] = 0;
}
for (int iIndex = 0; iIndex < 64; iIndex++) {
ePiece = m_pBoard[iIndex];
switch(ePiece) {
case PieceE.King | PieceE.White:
m_iWhiteKingPos = iIndex;
break;
case PieceE.King | PieceE.Black:
m_iBlackKingPos = iIndex;
break;
}
m_piPiecesCount[(int)ePiece]++;
}
m_iPossibleEnPassantAt = iEnPassant;
m_iRBlackRookMoveCount = ((eMask & BoardStateMaskE.BRCastling) == BoardStateMaskE.BRCastling) ? 0 : 1;
m_iLBlackRookMoveCount = ((eMask & BoardStateMaskE.BLCastling) == BoardStateMaskE.BLCastling) ? 0 : 1;
m_iBlackKingMoveCount = 0;
m_iRWhiteRookMoveCount = ((eMask & BoardStateMaskE.WRCastling) == BoardStateMaskE.WRCastling) ? 0 : 1;
m_iLWhiteRookMoveCount = ((eMask & BoardStateMaskE.WLCastling) == BoardStateMaskE.WLCastling) ? 0 : 1;
m_iWhiteKingMoveCount = 0;
m_bWhiteCastle = false;
m_bBlackCastle = false;
m_i64ZobristKey = ZobristKey.ComputeBoardZobristKey(m_pBoard);
m_eNextMoveColor = eNextMoveColor;
m_bDesignMode = false;
m_bStdInitialBoard = bInitialBoardStd;
m_moveHistory.Reset(m_pBoard, ComputeBoardExtraInfo(PlayerColorE.White, false));
m_moveStack.Clear();
m_stackPossibleEnPassantAt.Clear();
}
//*********************************************************
//
/// <summary>
/// Try to close the design mode.
/// </summary>
/// <param name="eNextMoveColor"> Color of the next move</param>
/// <param name="eBoardMask"> Board extra information</param>
/// <param name="iEnPassant"> Position of en passant or 0 if none</param>
/// <returns>
/// true if succeed, false if board is invalid
/// </returns>
//
//*********************************************************
public bool CloseDesignMode(PlayerColorE eNextMoveColor, BoardStateMaskE eBoardMask, int iEnPassant) {
bool bRetVal;
if (!m_bDesignMode) {
bRetVal = true;
} else {
ResetInitialBoardInfo(eNextMoveColor, false, eBoardMask, iEnPassant);
if (m_piPiecesCount[(int)(PieceE.King | PieceE.White)] == 1 &&
m_piPiecesCount[(int)(PieceE.King | PieceE.Black)] == 1) {
bRetVal = true;
} else {
bRetVal = false;
}
}
return(bRetVal);
}
/// <summary>
/// Reset initial board info
/// </summary>
/// <param name="eNextMoveColor"> Next color moving</param>
/// <param name="bInitialBoardStd"> true if its a standard board, false if coming from FEN or design mode</param>
/// <param name="eMask"> Extra bord information</param>
/// <param name="iEnPassant"> Position for en passant</param>
private void ResetInitialBoardInfo(PlayerColorE eNextMoveColor, bool bInitialBoardStd, BoardStateMaskE eMask, int iEnPassant)
{
PieceE ePiece;
int iEnPassantCol;
Array.Clear(m_piPiecesCount, 0, m_piPiecesCount.Length);
for (int iIndex = 0; iIndex < 64; iIndex++) {
ePiece = m_pBoard[iIndex];
switch(ePiece) {
case PieceE.King | PieceE.White:
m_iWhiteKingPos = iIndex;
break;
case PieceE.King | PieceE.Black:
m_iBlackKingPos = iIndex;
break;
}
m_piPiecesCount[(int)ePiece]++;
}
if (iEnPassant != 0) {
iEnPassantCol = (iEnPassant >> 3);
if (iEnPassantCol != 2 && iEnPassantCol != 5) {
if (iEnPassantCol == 3) { // Fixing old saved board which was keeping the en passant position at the position of the pawn instead of behind it
iEnPassant -= 8;
} else if (iEnPassantCol == 4) {
iEnPassant += 8;
} else {
iEnPassant = 0;
}
}
}
m_iPossibleEnPassantAt = iEnPassant;
m_iRBlackRookMoveCount = ((eMask & BoardStateMaskE.BRCastling) == BoardStateMaskE.BRCastling) ? 0 : 1;
m_iLBlackRookMoveCount = ((eMask & BoardStateMaskE.BLCastling) == BoardStateMaskE.BLCastling) ? 0 : 1;
m_iBlackKingMoveCount = 0;
m_iRWhiteRookMoveCount = ((eMask & BoardStateMaskE.WRCastling) == BoardStateMaskE.WRCastling) ? 0 : 1;
m_iLWhiteRookMoveCount = ((eMask & BoardStateMaskE.WLCastling) == BoardStateMaskE.WLCastling) ? 0 : 1;
m_iWhiteKingMoveCount = 0;
m_bWhiteCastle = false;
m_bBlackCastle = false;
m_i64ZobristKey = ZobristKey.ComputeBoardZobristKey(m_pBoard);
m_eNextMoveColor = eNextMoveColor;
m_bDesignMode = false;
m_bStdInitialBoard = bInitialBoardStd;
m_moveHistory.Reset(m_pBoard, ComputeBoardExtraInfo(PlayerColorE.White, false));
m_moveStack.Clear();
m_stackPossibleEnPassantAt.Clear();
}