private void ValidateIfLimitExceeded(IPiece piece)
{
var colorType = piece.GetColorType();
if (countOfPieces[colorType] >= piece.CountLimit)
{
throw new LimitExceededException(string.Format("Exceed the limit of {0} pawn", piece.PieceColor));
}
}
/// <summary>
/// Remove a piece from a coordinate.
/// </summary>
/// <param name="coordinate">The coordinate of the square a piece is removed from.</param>
/// <returns></returns>
public IChessBoard RemovePiece(IPiece piece, Coordinate coordinate)
{
// validation
CoordinateValidator.ValidateIfInsideChessBoard(coordinate);
ValidatePieceAtCoordinate(piece, coordinate);
// remove
pieces[coordinate.X, coordinate.Y] = null;
piece.ChessBoard = null;
countOfPieces[piece.GetColorType()]--;
return(this);
}
/// <summary>
/// Add a piece to a square when setting up a chess board.
/// </summary>
/// <param name="piece">A piece object.</param>
/// <param name="coordinate">The coordinate of a square into which a piece is to be added.</param>
public void AddPiece(IPiece piece, Coordinate coordinate)
{
// validation
CoordinateValidator.ValidateIfInsideChessBoard(coordinate);
piece.ValidateCoordinate(coordinate);
ValidateDuplicatePositioning(piece, coordinate);
ValidateIfLimitExceeded(piece);
// add
piece.Coordinate = coordinate;
pieces[coordinate.X, coordinate.Y] = piece;
piece.ChessBoard = this;
countOfPieces[piece.GetColorType()]++;
}
