public bool IsMoveLegal(BoardCoordinate origin, BoardCoordinate destination)
{
var isCapture = destination.IsCoordinateValidForBoardSize(_boardSize) && GetPiece(destination) != null;
var isIllegalCapture = isCapture && !GetPiece(origin).IsCaptureAllowed(origin, destination);
var isIllegalNonCapture = !isCapture && !GetPiece(origin).IsNonCaptureAllowed(origin, destination);
return(!isIllegalCapture && !isIllegalNonCapture && destination.IsCoordinateValidForBoardSize(_boardSize) &&
!IsBlocked(origin, destination) && !DoesFriendlyPieceExistAt(origin, destination));
}
public void AddPiece(Piece piece, BoardCoordinate moveTarget)
{
if (piece == null)
throw new ArgumentNullException("piece");
if (!moveTarget.IsCoordinateValidForBoardSize(_boardSize))
throw new ArgumentException("moveTarget");
SetPiece(piece, moveTarget);
}
private void SetEnPassantIfPawnExistsAtTarget(BoardCoordinate destination, BoardCoordinate enPassantTarget)
{
if (enPassantTarget.IsCoordinateValidForBoardSize(_boardSize))
{
var targetPawn = GetPiece(enPassantTarget) as Pawn;
if (targetPawn != null)
{
targetPawn.SetCanPerformEnPassantOn(destination);
}
}
}
public void AddPiece(Piece piece, BoardCoordinate moveTarget)
{
if (piece == null)
{
throw new ArgumentNullException("piece");
}
if (!moveTarget.IsCoordinateValidForBoardSize(_boardSize))
{
throw new ArgumentException("moveTarget");
}
SetPiece(piece, moveTarget);
}
private bool IsMoveLegal(BoardCoordinate origin, BoardCoordinate destination)
{
var isCapture = destination.IsCoordinateValidForBoardSize(_boardSize) && GetPiece(destination) != null;
var isIllegalCapture = isCapture && !GetPiece(origin).IsCaptureAllowed(origin, destination);
var isIllegalNonCapture = !isCapture && !GetPiece(origin).IsNonCaptureAllowed(origin, destination);
return !isIllegalCapture && !isIllegalNonCapture && destination.IsCoordinateValidForBoardSize(_boardSize) &&
!IsBlocked(origin, destination) && !DoesFriendlyPieceExistAt(origin, destination);
}
private void SetEnPassantIfPawnExistsAtTarget(BoardCoordinate destination, BoardCoordinate enPassantTarget)
{
if (enPassantTarget.IsCoordinateValidForBoardSize(_boardSize))
{
var targetPawn = GetPiece(enPassantTarget) as Pawn;
if (targetPawn != null)
targetPawn.SetCanPerformEnPassantOn(destination);
}
}
public void Returns_False_For_Y_Less_Than_Zero()
{
var coordinate = new BoardCoordinate(1, -23);
Assert.IsFalse(coordinate.IsCoordinateValidForBoardSize(8));
}
public void Returns_False_For_X_Less_Than_Zero()
{
var coordinate = new BoardCoordinate(-12, 2);
Assert.IsFalse(coordinate.IsCoordinateValidForBoardSize(5));
}