/// <summary>
/// Generates the move.
/// In this class, the move is not verified if it puts its own king in check.
/// This is implemented in the BlackPiece and WhitePiece subclasses.
/// </summary>
/// <param name="board">The board</param>
/// <param name="from">The starting square</param>
/// <param name="to">The ending square</param>
/// <returns></returns>
internal virtual Move GenerateMove(Board board, int from, int to)
{
if (!MightMove(board, from, to))
{
return(null);
}
Move move = new Move(board.Status, from, to);
move.ChangeSideToMove(); // change side to move
move.SetEnPassantTarget(null); // reset the en passant target
if (board[to] == null) // if there is no capture
{
move.IncrementPly(); // increment the ply
}
else// if there is a capture
{
move.ResetPly();// reset the ply
// if there this moves captures a rook
// and the ending squares is one of the board corners
// reset castling availability
if (board[to] is WhiteRook)
{
if (to == Board.A1)
{
move.MakeWhiteLongCastlingUnavail();
}
else if (to == Board.H1)
{
move.MakeWhiteShortCastlingUnavail();
}
}
else if (board[to] is BlackRook)
{
if (to == Board.A8)
{
move.MakeBlackLongCastlingUnavail();
}
else if (to == Board.H8)
{
move.MakeBlackShortCastlingUnavail();
}
}
}
return(move);
}
/// <summary>
/// Generates the move.
/// In this class, the move is not verified if it puts its own king in check.
/// This is implemented in the BlackPiece and WhitePiece subclasses.
/// </summary>
/// <param name="board">The board</param>
/// <param name="from">The starting square</param>
/// <param name="to">The ending square</param>
/// <returns></returns>
internal virtual Move GenerateMove(Board board, int from, int to)
{
if (!MightMove(board, from, to)) { return null; }
Move move = new Move(board.Status, from, to);
move.ChangeSideToMove();// change side to move
move.SetEnPassantTarget(null);// reset the en passant target
if (board[to] == null)// if there is no capture
{
move.IncrementPly();// increment the ply
}
else// if there is a capture
{
move.ResetPly();// reset the ply
// if there this moves captures a rook
// and the ending squares is one of the board corners
// reset castling availability
if (board[to] is WhiteRook)
{
if (to == Board.A1)
{
move.MakeWhiteLongCastlingUnavail();
}
else if (to == Board.H1)
{
move.MakeWhiteShortCastlingUnavail();
}
}
else if (board[to] is BlackRook)
{
if (to == Board.A8)
{
move.MakeBlackLongCastlingUnavail();
}
else if (to == Board.H8)
{
move.MakeBlackShortCastlingUnavail();
}
}
}
return move;
}
/// <summary>
/// Generates the move.
/// </summary>
/// <param name="board">The board</param>
/// <param name="from">The starting square</param>
/// <param name="to">The ending square</param>
/// <returns></returns>
internal override Move GenerateMove(Board board, int from, int to)
{
Move move = base.GenerateMove(board, from, to);
// just reset castling availability
if (move != null)
{
if (from == Board.A1)
{
move.MakeWhiteLongCastlingUnavail();
}
else if (from == Board.H1)
{
move.MakeWhiteShortCastlingUnavail();
}
return(move);
}
else
{
return(null);
}
}
