/// <summary>
/// Updates the board after En Passant. Does not check legality.
/// </summary>
/// <param name="attacker">Pawn that is passing</param>
/// <param name="capture">Capture to make</param>
/// <param name="lostPiece">Pawn being captured</param>
private void UpdateBoardForEnPassant(IPawn attacker, ICapture capture, IPawn lostPiece)
{
GameBoard.Remove(attacker.Location);
attacker.MoveTo(capture.EndingPosition);
GameBoard.Add(capture.EndingPosition);
GameBoard.Remove(lostPiece.Location);
lostPiece.Location = ChessPosition.None;
MoveHistory.Add(attacker, capture);
}
/// <summary>
/// Executes a normal capture. Does not check for legality.
/// </summary>
/// <param name="capture"></param>
/// <returns>Point value of piece being captured</returns>
private int ExecuteCapture(ICapture capture)
{
IPiece movingPiece = GetPiece(ActivePlayerColor, capture.StartingPosition);
IPiece lostPiece = GetPiece(InactivePlayerColor, capture.EndingPosition);
movingPiece.MoveTo(capture.EndingPosition);
lostPiece.Location = ChessPosition.None;
GameBoard.Execute(capture);
MoveHistory.Add(movingPiece, capture);
return(lostPiece.Value);
}
/// <summary>
/// Updates board for Castle. Does not check legality.
/// </summary>
/// <param name="king"></param>
/// <param name="move"></param>
/// <param name="rook"></param>
private void UpdateBoardForCastle(IKing king, IMove move, IRook rook)
{
ChessPosition newRookLocation = ModelLocator.CastlingHelper.GetEndingPositionForCastlingRook(king, rook);
GameBoard.Remove(king.Location); // remove King from board
king.MoveTo(move.EndingPosition); // move King, update location
GameBoard.Add(move.EndingPosition); // place King on board at update location
GameBoard.Remove(rook.Location); // remove Rook from board
rook.MoveTo(newRookLocation); // move Rook, update location
GameBoard.Add(rook.Location); // place Rook on board at updated location
MoveHistory.Add(king, move);
}
/// <summary>
/// Executes a move. Does not check legality.
/// </summary>
/// <param name="move"></param>
private void ExecuteMove(IMove move)
{
IPiece movingPiece = GetPiece(ActivePlayerColor, move.StartingPosition);
movingPiece.MoveTo(move.EndingPosition);
if (movingPiece is IPawn pawn && pawn.IsPromotable)
{
PromotePawn(movingPiece);
}
GameBoard.Execute(move);
MoveHistory.Add(movingPiece, move);
}