/// <summary>
/// Enumerates all the possible moves for a player
/// </summary>
/// <param name="ePlayerColor"> Color doing the the move</param>
/// <param name="posInfo"> Structure to fill with pieces information</param>
public void ComputePiecesCoverage(PlayerColorE ePlayerColor, out PosInfoS posInfo)
{
EnumMoveList(ePlayerColor, false, out posInfo);
}
/// <summary>
/// Enumerates all the possible moves for a player
/// </summary>
/// <param name="ePlayerColor"> Color doing the the move</param>
/// <param name="bMoveList"> true to returns a MoveList</param>
/// <param name="posInfo"> Structure to fill with pieces information</param>
/// <returns>
/// List of possible moves or null
/// </returns>
public List<MovePosS> EnumMoveList(PlayerColorE ePlayerColor, bool bMoveList, out PosInfoS posInfo)
{
PieceE ePiece;
List<MovePosS> arrMovePos;
bool bBlackToMove;
m_posInfo.m_iAttackedPieces = 0;
m_posInfo.m_iPiecesDefending = 0;
arrMovePos = (bMoveList) ? new List<MovePosS>(256) : null;
bBlackToMove = (ePlayerColor == PlayerColorE.Black);
for (int iIndex = 0; iIndex < 64; iIndex++) {
ePiece = m_pBoard[iIndex];
if (ePiece != PieceE.None && ((ePiece & PieceE.Black) != 0) == bBlackToMove) {
switch(ePiece & PieceE.PieceMask) {
case PieceE.Pawn:
EnumPawnMove(ePlayerColor, iIndex, arrMovePos);
break;
case PieceE.Knight:
EnumFromArray(ePlayerColor, iIndex, s_ppiCaseMoveKnight[iIndex], arrMovePos);
break;
case PieceE.Bishop:
EnumFromArray(ePlayerColor, iIndex, s_pppiCaseMoveDiagonal[iIndex], arrMovePos);
break;
case PieceE.Rook:
EnumFromArray(ePlayerColor, iIndex, s_pppiCaseMoveLine[iIndex], arrMovePos);
break;
case PieceE.Queen:
EnumFromArray(ePlayerColor, iIndex, s_pppiCaseMoveDiagLine[iIndex], arrMovePos);
break;
case PieceE.King:
EnumFromArray(ePlayerColor, iIndex, s_ppiCaseMoveKing[iIndex], arrMovePos);
break;
}
}
}
EnumCastleMove(ePlayerColor, arrMovePos);
EnumEnPassant(ePlayerColor, arrMovePos);
posInfo = m_posInfo;
return(arrMovePos);
}
/// <summary>
/// Evaluates a board. The number of point is greater than 0 if white is in advantage, less than 0 if black is.
/// </summary>
/// <param name="searchMode"> Search mode</param>
/// <param name="ePlayerToPlay"> Color of the player to play</param>
/// <param name="iDepth"> Depth of the search</param>
/// <param name="iMoveCountDelta"> White move count - Black move count</param>
/// <param name="posInfoWhite"> Information about pieces attack</param>
/// <param name="posInfoBlack"> Information about pieces attack</param>
/// <returns>
/// Number of points for the current board
/// </returns>
public int Points(SearchEngine.SearchMode searchMode, PlayerColorE ePlayerToPlay, int iDepth, int iMoveCountDelta, PosInfoS posInfoWhite, PosInfoS posInfoBlack)
{
int iRetVal;
IBoardEvaluation boardEval;
PosInfoS posInfoTmp;
if (ePlayerToPlay == PlayerColorE.White) {
boardEval = searchMode.m_boardEvaluationWhite;
posInfoTmp = posInfoWhite;
} else {
boardEval = searchMode.m_boardEvaluationBlack;
posInfoTmp.m_iAttackedPieces = -posInfoBlack.m_iAttackedPieces;
posInfoTmp.m_iPiecesDefending = -posInfoBlack.m_iPiecesDefending;
}
iRetVal = boardEval.Points(m_pBoard, m_piPiecesCount, posInfoTmp, m_iWhiteKingPos, m_iBlackKingPos, m_bWhiteCastle, m_bBlackCastle, iMoveCountDelta);
return(iRetVal);
}
