/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done by a move when its carried out.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < m_directions.Length; ++i)
{
m_iterator.Reset(board, location, m_directions[i]);
while (m_iterator.Next())
{
if (m_iterator.CurrentPiece() == Piece.None)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
else
{
if (m_iterator.CurrentPieceColor() != m_color)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
break;
}
}
}
}
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done by a move when its carried out.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
//Basic moves
for (int i = 0; i < m_directions.Length; ++i)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next())
{
if (m_iterator.CurrentPieceColor() != m_color)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
//Castling moves
switch (m_color)
{
case PieceColor.White:
if (board.State.WhiteCanCastleLong &&
board.IsPathClear(Square.E1, Square.A1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.E1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.D1))
{
moves.Add(new Move(board, Square.E1, Square.C1, Square.A1, Square.D1));
}
if (board.State.WhiteCanCastleShort &&
board.IsPathClear(Square.E1, Square.H1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.E1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.F1))
{
moves.Add(new Move(board, Square.E1, Square.G1, Square.H1, Square.F1));
}
break;
case PieceColor.Black:
if (board.State.BlackCanCastleLong &&
board.IsPathClear(Square.E8, Square.A8) &&
!board.IsSquareAttacted(PieceColor.White, Square.E8) &&
!board.IsSquareAttacted(PieceColor.White, Square.D8))
{
moves.Add(new Move(board, Square.E8, Square.C8, Square.A8, Square.D8));
}
if (board.State.BlackCanCastleShort &&
board.IsPathClear(Square.E8, Square.H8) &&
!board.IsSquareAttacted(PieceColor.White, Square.E8) &&
!board.IsSquareAttacted(PieceColor.White, Square.F8))
{
moves.Add(new Move(board, Square.E8, Square.G8, Square.H8, Square.F8));
}
break;
}
}
}
/// <summary>
/// Makes computer think. When the move to play as been decided the
/// "MoveFound" event is raised.
/// </summary>
/// <param name="moveOrganizer">List of possible moves to select a move from.</param>
/// <param name="maxSearchDepth">Maximum AlphaBeta depth to search. Must be equal to, or larger then one.</param>
/// <param name="searchTime">Time before search is stoppen.</param>
public void Think(MoveOrganizer moveOrganizer, int maxSearchDepth, int searchTime)
{
if (!m_workerThread.IsBusy)
{
m_abortingSearch = false;
m_waitHandle.Reset();
m_workerThread.RunWorkerAsync(new ThreadParam(moveOrganizer, maxSearchDepth, searchTime));
}
}
/// <summary>
/// Instantiates a new instance of the "ThreadParam" class.
/// </summary>
/// <param name="board">Board associated with move organizer.</param>
/// <param name="moveOrganizer">Collection of moves to evaluate and carry out search for.</param>
/// <param name="useBook">May the engine use the opening book when selecting a move.</param>
/// <param name="searchDepth">Depth to search.</param>
/// <param name="aimSearchTime">Time to search. Actual search will typically be a little more.</param>
/// <param name="maxSearchTime">Maximum time to search.</param>
public ThreadParam(Board board, MoveOrganizer moveOrganizer, bool useBook, int searchDepth, TimeSpan aimSearchTime, TimeSpan maxSearchTime)
{
m_board = board;
m_moveOrganizer = moveOrganizer;
m_useBook = useBook;
m_maxSearchDepth = searchDepth;
m_aimSearchTime = aimSearchTime;
m_maxSearchTime = maxSearchTime;
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done in MoveOrganizer when adding a move.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
//Basic moves
for (int i = 0; i < m_directions.Length; i++)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next())
if (m_iterator.CurrentPieceColor() != m_color)
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
//Castling moves
switch (m_color)
{
case PieceColor.White:
if (board.State.WhiteCanCastleLong &&
board.IsPathClear(Square.E1, Square.A1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.E1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.D1))
{
moves.Add(new CastlingMove(board, Square.E1, Square.C1));
}
if (board.State.WhiteCanCastleShort &&
board.IsPathClear(Square.E1, Square.H1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.E1) &&
!board.IsSquareAttacted(PieceColor.Black, Square.F1))
{
moves.Add(new CastlingMove(board, Square.E1, Square.G1));
}
break;
case PieceColor.Black:
if (board.State.BlackCanCastleLong &&
board.IsPathClear(Square.E8, Square.A8) &&
!board.IsSquareAttacted(PieceColor.White, Square.E8) &&
!board.IsSquareAttacted(PieceColor.White, Square.D8))
{
moves.Add(new CastlingMove(board, Square.E8, Square.C8));
}
if (board.State.BlackCanCastleShort &&
board.IsPathClear(Square.E8, Square.H8) &&
!board.IsSquareAttacted(PieceColor.White, Square.E8) &&
!board.IsSquareAttacted(PieceColor.White, Square.F8))
{
moves.Add(new CastlingMove(board, Square.E8, Square.G8));
}
break;
}
}
}
/// <summary>
/// Initializes a new instance of the Game class.
/// </summary>
/// <param name="board">A board holding the layout this game will be initialized with. If this parameter is null a standard layout will be created.</param>
/// <param name="clockConfiguration">The type of clock to use for this game.</param>
public Game(Board board, ClockConfiguration clockConfiguration)
{
m_board = (board == null) ? new Board() : new Board(board);
m_possibleMoves = new MoveOrganizer();
m_undoMoveHistory = new Stack<Move>();
m_redoMoveHistory = new Stack<Move>();
SetClockConfiguration(clockConfiguration);
HandleGameHasChanged();
}
/// <summary>
/// Initializes a new instance of the Game class.
/// </summary>
/// <param name="board">A board holding the layout this game will be initialized with. If this parameter is null a standard layout will be created.</param>
/// <param name="clockConfiguration">The type of clock to use for this game.</param>
public Game(Board board, ClockConfiguration clockConfiguration)
{
m_board = (board == null) ? new Board() : new Board(board);
m_possibleMoves = new MoveOrganizer();
m_undoMoveHistory = new Stack <Move>();
m_redoMoveHistory = new Stack <Move>();
SetClockConfiguration(clockConfiguration);
HandleGameHasChanged();
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done by a move when its carried out.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < KNIGHT_MOVES; ++i)
{
m_iterator.Reset(board, location, m_directions[i]);
m_iterator.Next(m_directions[i + 0]);
m_iterator.Next(m_directions[i + 1]);
if (m_iterator.Next(m_directions[i + 2]))
{
if (m_iterator.CurrentPieceColor() != m_color)
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done in MoveOrganizer when adding a move.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < m_directions.Length; i++)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next(m_directions[(i + 0) % m_directions.Length]) &&
m_iterator.Next(m_directions[(i + 1) % m_directions.Length]) &&
m_iterator.Next(m_directions[(i + 2) % m_directions.Length]))
{
if (m_iterator.CurrentPieceColor() != m_color)
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done by a move when its carried out.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < KNIGHT_MOVES; ++i)
{
m_iterator.Reset(board, location, m_directions[i]);
m_iterator.Next(m_directions[i + 0]);
m_iterator.Next(m_directions[i + 1]);
if (m_iterator.Next(m_directions[i + 2]))
{
if (m_iterator.CurrentPieceColor() != m_color)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
}
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done in MoveOrganizer when adding a move.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < m_directions.Length; i++)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next(m_directions[(i + 0) % m_directions.Length]) &&
m_iterator.Next(m_directions[(i + 1) % m_directions.Length]) &&
m_iterator.Next(m_directions[(i + 2) % m_directions.Length]))
{
if (m_iterator.CurrentPieceColor() != m_color)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
}
}
/// <summary>
/// Generates valid moves on piece level for all pieces on the board and adds them to moves.
/// </summary>
/// <remarks>
/// Valid moves on piece level are moves that for the isolated piece is valid. Such a move might
/// however on board level still be invalid if the move puts its own king in check.
/// </remarks>
/// <param name="moves">The MoveOrganizer where generated moves are added.</param>
public void GeneratePseudoLegalMoves(MoveOrganizer moves)
{
switch (State.ColorToPlay)
{
case PieceColor.White:
foreach (Square square in m_whiteLocationList)
{
IFlyweightPiece piece = m_pieceFactory.GetFlyweightPiece(this[square]);
piece.GenerateMoves(this, square, moves);
}
break;
case PieceColor.Black:
foreach (Square square in m_blackLocationList)
{
IFlyweightPiece piece = m_pieceFactory.GetFlyweightPiece(this[square]);
piece.GenerateMoves(this, square, moves);
}
break;
}
}
/// <summary>
/// Makes computer think. When the move to play as been decided the
/// "MoveFound" event is raised.
/// </summary>
/// <param name="board">The board to find a move for.</param>
/// <param name="moveOrganizer">List of possible moves for the current position on board.</param>
/// <param name="useBook">May the engine use the opening book when selecting a move.</param>
/// <param name="maxSearchDepth">Maximum AlphaBeta depth to search. Must be equal to, or larger then one.</param>
/// <param name="maxSearchTime">Time before search is stoppen.</param>
/// <param name="clockTime">The remaining time of the clock.</param>
public void Think(Board board, MoveOrganizer moveOrganizer, bool useBook, int maxSearchDepth, TimeSpan maxSearchTime, TimeSpan clockTime)
{
if (!m_thinking)
{
m_waitHandle.Reset();
m_thinking = true;
TimeSpan calculatedAimTime = m_timeControl.CalculateAimedSearchTime(clockTime);
TimeSpan calculatedMaxTime = m_timeControl.CalculateMaxSearchTime(clockTime);
if (calculatedMaxTime > maxSearchTime)
{
calculatedMaxTime = maxSearchTime;
}
if (calculatedAimTime > calculatedMaxTime)
{
calculatedAimTime = calculatedMaxTime;
}
m_workerThread.RunWorkerAsync(new ThreadParam(board, moveOrganizer, useBook, maxSearchDepth, calculatedAimTime, calculatedMaxTime));
}
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done in MoveOrganizer when adding a move.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < m_directions.Length; i++)
{
m_iterator.Reset(board, location, m_directions[i]);
while (m_iterator.Next())
{
if (m_iterator.CurrentPiece() == Piece.None)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
else
{
if (m_iterator.CurrentPieceColor() != m_color)
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
}
}
}
}
/// <summary>
/// Instantiates a new instance of the "ThreadParam" class.
/// </summary>
/// <param name="moveOrganizer">Collection of moves to evaluate and carry out search for.</param>
/// <param name="searchDepth">Depth to search.</param>
/// <param name="searchTime">Time to search. Actual search will typically be a little more.</param>
public ThreadParam(MoveOrganizer moveOrganizer, int searchDepth, int searchTime)
{
m_moveOrganizer = moveOrganizer;
m_maxSearchDepth = searchDepth;
m_searchTime = searchTime;
}
/// <summary>
/// Instantiates an instance of the enumerator.
/// </summary>
/// <param name="organizer">The "MoveOrganizer" this enumerator iterates.</param>
public MoveOrganizerEnumerator(MoveOrganizer organizer)
{
m_organizer = organizer;
m_index = -1;
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done by a move when its carried out.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
//Non hitting moves
m_iterator.Reset(board, location, m_directions[0]);
if (m_iterator.Next())
{
if (m_iterator.CurrentPiece() == Piece.None)
{
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black non hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White non hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic non hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
//Two squares forward opening move
if (Board.Rank(m_iterator.CurrentSquare()) == moveAgainRow)
{
m_iterator.Next();
if (m_iterator.CurrentPiece() == Piece.None)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
}
//Hitting moves to the left and right
for (int i = 1; i < m_directions.Length; ++i)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next())
{
if (m_iterator.CurrentPieceColor() == m_opponentColor)
{
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
}
}
}
//EnPassant moves
if (Math.Abs(board.State.EnPassantTarget - location) == 1)
{
switch (m_color)
{
case PieceColor.White:
moves.Add(new Move(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) + 1), board.State.EnPassantTarget));
break;
case PieceColor.Black:
moves.Add(new Move(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) - 1), board.State.EnPassantTarget));
break;
}
}
}
}
/// <summary>
/// Makes computer think. When the move to play as been decided the
/// "MoveFound" event is raised.
/// </summary>
/// <param name="board">The board to find a move for.</param>
/// <param name="moveOrganizer">List of possible moves for the current position on board.</param>
/// <param name="useBook">May the engine use the opening book when selecting a move.</param>
/// <param name="maxSearchDepth">Maximum AlphaBeta depth to search. Must be equal to, or larger then one.</param>
/// <param name="maxSearchTime">Time before search is stoppen.</param>
/// <param name="clockTime">The remaining time of the clock.</param>
public void Think(Board board, MoveOrganizer moveOrganizer, bool useBook, int maxSearchDepth, TimeSpan maxSearchTime, TimeSpan clockTime)
{
if (!m_thinking)
{
m_waitHandle.Reset();
m_thinking = true;
TimeSpan calculatedAimTime = m_timeControl.CalculateAimedSearchTime(clockTime);
TimeSpan calculatedMaxTime = m_timeControl.CalculateMaxSearchTime(clockTime);
if (calculatedMaxTime > maxSearchTime)
calculatedMaxTime = maxSearchTime;
if (calculatedAimTime > calculatedMaxTime)
calculatedAimTime = calculatedMaxTime;
m_workerThread.RunWorkerAsync(new ThreadParam(board, moveOrganizer, useBook, maxSearchDepth, calculatedAimTime, calculatedMaxTime));
}
}
/// <summary>
/// Instantiates a new instance of the "ThreadParam" class.
/// </summary>
/// <param name="board">Board associated with move organizer.</param>
/// <param name="moveOrganizer">Collection of moves to evaluate and carry out search for.</param>
/// <param name="useBook">May the engine use the opening book when selecting a move.</param>
/// <param name="searchDepth">Depth to search.</param>
/// <param name="aimSearchTime">Time to search. Actual search will typically be a little more.</param>
/// <param name="maxSearchTime">Maximum time to search.</param>
public ThreadParam(Board board, MoveOrganizer moveOrganizer, bool useBook, int searchDepth, TimeSpan aimSearchTime, TimeSpan maxSearchTime)
{
m_board = board;
m_moveOrganizer = moveOrganizer;
m_useBook = useBook;
m_maxSearchDepth = searchDepth;
m_aimSearchTime = aimSearchTime;
m_maxSearchTime = maxSearchTime;
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done in MoveOrganizer when adding a move.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < m_directions.Length; i++)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next())
{
if (m_iterator.CurrentPiece() == Piece.None &&
(m_iterator.CurrentDirection() == Direction.Up || m_iterator.CurrentDirection() == Direction.Down))
{
//Non hitting moves
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black non hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White non hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic non hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
if ((Board.Rank(m_iterator.CurrentSquare()) == 2 && m_iterator.CurrentDirection() == Direction.Up) ||
(Board.Rank(m_iterator.CurrentSquare()) == 5 && m_iterator.CurrentDirection() == Direction.Down))
{ //Two squares forward opening move
m_iterator.Next();
if (m_iterator.CurrentPiece() == Piece.None)
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
else if (m_iterator.CurrentPiece() != Piece.None && m_iterator.CurrentPieceColor() != m_color &&
m_iterator.CurrentDirection() != Direction.Up && m_iterator.CurrentDirection() != Direction.Down)
{
//Hitting moves
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
}
}
}
//EnPassant moves
if (board.State.EnPassantTarget != Square.None &&
Math.Abs(board.State.EnPassantTarget - location) == 1 &&
Board.Rank(board.State.EnPassantTarget) == Board.Rank(location))
{
switch (m_color)
{
case PieceColor.White:
moves.Add(new EnPassantCaptureMove(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) + 1)));
break;
case PieceColor.Black:
moves.Add(new EnPassantCaptureMove(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) - 1)));
break;
}
}
}
}
/// <summary>
/// Instantiates a new instance of the "ThreadParam" class.
/// </summary>
/// <param name="moveOrganizer">Collection of moves to evaluate and carry out search for.</param>
/// <param name="searchDepth">Depth to search.</param>
/// <param name="searchTime">Time to search. Actual search will typically be a little more.</param>
public ThreadParam(MoveOrganizer moveOrganizer, int searchDepth, int searchTime)
{
m_moveOrganizer = moveOrganizer;
m_maxSearchDepth = searchDepth;
m_searchTime = searchTime;
}
public Move Query(Board board, MoveOrganizer moveOrganizer)
{
int totalQuaryVal = 0;
m_queryMoves.Clear();
foreach (Move move in moveOrganizer)
{
if (move.Execute(board))
{
int currentQueryVal = 0;
if (board.State.NonHitAndPawnMovesPlayed < 100 &&
board.BoardHistoryFrequency() < 3 &&
m_positionTable.TryGetValue(board.BoardHash(false), out currentQueryVal))
{
totalQuaryVal += currentQueryVal;
m_queryMoves.Add(new QueryEntry(move, currentQueryVal));
}
move.UnExecute(board);
}
}
//select a move using probabilety based on the quary value
int selectValueCurrent = 0;
int selectValueTarget = (int)Math.Round(m_moveSelector.NextDouble() * totalQuaryVal);
for (int i = 0; i < m_queryMoves.Count; ++i)
{
selectValueCurrent += m_queryMoves[i].QueryScore;
if (selectValueCurrent >= selectValueTarget)
{
OutputWriter.Write("Book moves: " + m_queryMoves.Count + ", Selecting: " + Math.Round((float)m_queryMoves[i].QueryScore / (float)totalQuaryVal, 6));
return m_queryMoves[i].QueryMove;
}
}
return null;
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done by a move when its carried out.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
//Non hitting moves
m_iterator.Reset(board, location, m_directions[0]);
if (m_iterator.Next())
{
if (m_iterator.CurrentPiece() == Piece.None)
{
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black non hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White non hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic non hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
//Two squares forward opening move
if (Board.Rank(m_iterator.CurrentSquare()) == moveAgainRow)
{
m_iterator.Next();
if (m_iterator.CurrentPiece() == Piece.None)
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
//Hitting moves to the left and right
for (int i = 1; i < m_directions.Length; ++i)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next())
{
if (m_iterator.CurrentPieceColor() == m_opponentColor)
{
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White hitting promotion move
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new Move(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
}
}
}
//EnPassant moves
if (Math.Abs(board.State.EnPassantTarget - location) == 1)
{
switch (m_color)
{
case PieceColor.White:
moves.Add(new Move(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) + 1), board.State.EnPassantTarget));
break;
case PieceColor.Black:
moves.Add(new Move(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) - 1), board.State.EnPassantTarget));
break;
}
}
}
}
/// <summary>
/// Instantiates an instance of the enumerator.
/// </summary>
/// <param name="organizer">The "MoveOrganizer" this enumerator iterates.</param>
public MoveOrganizerEnumerator(MoveOrganizer organizer)
{
m_organizer = organizer;
m_index = -1;
}
/// <summary>
/// Generate moves a FlyweightPiece can make.
/// This method does not varifies if a move puts its own king in check.
/// This is done in MoveOrganizer when adding a move.
/// </summary>
/// <param name="board">Board to generate moves for.</param>
/// <param name="location">Location of the piece.</param>
/// <param name="moves">Container class to which all generated moves are added.</param>
public void GenerateMoves(Board board, Square location, MoveOrganizer moves)
{
if (m_color == board.State.ColorToPlay)
{
for (int i = 0; i < m_directions.Length; i++)
{
m_iterator.Reset(board, location, m_directions[i]);
if (m_iterator.Next())
{
if (m_iterator.CurrentPiece() == Piece.None &&
(m_iterator.CurrentDirection() == Direction.Up || m_iterator.CurrentDirection() == Direction.Down))
{
//Non hitting moves
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black non hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White non hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic non hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
if ((Board.Rank(m_iterator.CurrentSquare()) == 2 && m_iterator.CurrentDirection() == Direction.Up) ||
(Board.Rank(m_iterator.CurrentSquare()) == 5 && m_iterator.CurrentDirection() == Direction.Down))
{ //Two squares forward opening move
m_iterator.Next();
if (m_iterator.CurrentPiece() == Piece.None)
{
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
}
}
}
else if (m_iterator.CurrentPiece() != Piece.None && m_iterator.CurrentPieceColor() != m_color &&
m_iterator.CurrentDirection() != Direction.Up && m_iterator.CurrentDirection() != Direction.Down)
{
//Hitting moves
switch (Board.Rank(m_iterator.CurrentSquare()))
{
case 0:
//Black hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.BlackRook));
break;
case 7:
//White hitting promotion move
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteBishop));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteKnight));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteQueen));
moves.Add(new PawnPromotionMove(board, location, m_iterator.CurrentSquare(), Piece.WhiteRook));
break;
default:
//Basic hitting move
moves.Add(new Move(board, location, m_iterator.CurrentSquare()));
break;
}
}
}
}
//EnPassant moves
if (board.State.EnPassantTarget != Square.None &&
Math.Abs(board.State.EnPassantTarget - location) == 1 &&
Board.Rank(board.State.EnPassantTarget) == Board.Rank(location))
{
switch (m_color)
{
case PieceColor.White:
moves.Add(new EnPassantCaptureMove(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) + 1)));
break;
case PieceColor.Black:
moves.Add(new EnPassantCaptureMove(board, location, Board.Position(Board.File(board.State.EnPassantTarget), Board.Rank(location) - 1)));
break;
}
}
}
}
/// <summary>
/// Generates valid moves on piece level for all pieces on the board and adds them to moves.
/// </summary>
/// <remarks>
/// Valid moves on piece level are moves that for the isolated piece is valid. Such a move might
/// however on board level still be invalid if the move puts its own king in check.
/// </remarks>
/// <param name="moves">The MoveOrganizer where generated moves are added.</param>
public void GeneratePseudoLegalMoves(MoveOrganizer moves)
{
switch (State.ColorToPlay)
{
case PieceColor.White:
foreach (Square square in m_whiteLocationList)
{
IFlyweightPiece piece = m_pieceFactory.GetFlyweightPiece(this[square]);
piece.GenerateMoves(this, square, moves);
}
break;
case PieceColor.Black:
foreach (Square square in m_blackLocationList)
{
IFlyweightPiece piece = m_pieceFactory.GetFlyweightPiece(this[square]);
piece.GenerateMoves(this, square, moves);
}
break;
}
}
/// <summary>
/// Makes computer think. When the move to play as been decided the
/// "MoveFound" event is raised.
/// </summary>
/// <param name="moveOrganizer">List of possible moves to select a move from.</param>
/// <param name="maxSearchDepth">Maximum AlphaBeta depth to search. Must be equal to, or larger then one.</param>
/// <param name="searchTime">Time before search is stoppen.</param>
public void Think(MoveOrganizer moveOrganizer, int maxSearchDepth, int searchTime)
{
if (!m_workerThread.IsBusy)
{
m_abortingSearch = false;
m_waitHandle.Reset();
m_workerThread.RunWorkerAsync(new ThreadParam(moveOrganizer, maxSearchDepth, searchTime));
}
}