/// <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>
/// 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;
}
}
}
}
