/// <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>
/// Verifies if a piece attacks a square. This method does not check if the piece on "from"
/// on the board is of the same type as this FlyweightPiece represents.
/// </summary>
/// <param name="board">Board to check attacking on.</param>
/// <param name="from">Square on which attacking piece is placed.</param>
/// <param name="to">The square to check if attacked.</param>
/// <returns>True if a FlyweightPiece placed on "from" square attacks the "to" square. False otherwise.</returns>
public bool Attacks(Board board, Square from, Square to)
{
if (Math.Abs(Board.File(from) - Board.File(to)) == Math.Abs(Board.Rank(from) - Board.Rank(to)))
{
return(board.IsPathClear(from, to));
}
return(false);
}
/// <summary>
/// Verifies if a piece attacks a square. This method does not check if the piece on "from"
/// on the board is of the same type as this FlyweightPiece represents.
/// </summary>
/// <param name="board">Board to check attacking on.</param>
/// <param name="from">Square on which attacking piece is placed.</param>
/// <param name="to">The square to check if attacked.</param>
/// <returns>True if a FlyweightPiece placed on "from" square attacks the "to" square. False otherwise.</returns>
public bool Attacks(Board board, Square from, Square to)
{
if (Math.Abs(Board.Rank(from) - Board.Rank(to)) <= 1 && Math.Abs(Board.File(from) - Board.File(to)) <= 1)
{
return board.IsPathClear(from, to);
}
return false;
}
/// <summary>
/// Verifies if a piece attacks a square. This method does not check if the piece on "from"
/// on the board is of the same type as this FlyweightPiece represents.
/// </summary>
/// <param name="board">Board to check attacking on.</param>
/// <param name="from">Square on which attacking piece is placed.</param>
/// <param name="to">The square to check if attacked.</param>
/// <returns>True if a FlyweightPiece placed on "from" square attacks the "to" square. False otherwise.</returns>
public bool Attacks(Board board, Square from, Square to)
{
if (Board.Rank(from) == Board.Rank(to) ||
Board.File(from) == Board.File(to))
{
return board.IsPathClear(from, to);
}
return false;
}
/// <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;
}
}
}