public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize)
{
yield return new BoardCoordinate(startingLocation.X, startingLocation.Y+1);
if(!HasMoved)
yield return new BoardCoordinate(startingLocation.X, startingLocation.Y + 2);
}
public void AddPiece(Piece piece, BoardCoordinate moveTarget)
{
if(!moveTarget.IsCoordinateValidForBoardSize(BoardSize))
throw new ArgumentException("moveTarget");
_pieces[moveTarget.X, moveTarget.Y] = piece;
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize)
{
var allDistancesFromStart = Enumerable.Range(1, boardSize+1);
var allPossibleBoardCoordinates = allDistancesFromStart.SelectMany(sp => GetRadialDiagonalFrom(startingLocation, sp));
var legalBoardCoordinates = allPossibleBoardCoordinates.Where(bc => bc.IsCoordinateValidForBoardSize(boardSize));
return legalBoardCoordinates;
}
private static IEnumerable<BoardCoordinate> GetRadialDiagonalFrom(BoardCoordinate startingPosition, int distance)
{
yield return new BoardCoordinate(startingPosition.X + distance, startingPosition.Y + distance);
yield return new BoardCoordinate(startingPosition.X + distance, startingPosition.Y - distance);
yield return new BoardCoordinate(startingPosition.X - distance, startingPosition.Y + distance);
yield return new BoardCoordinate(startingPosition.X - distance, startingPosition.Y - distance);
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize)
{
var availableCoordinates = Enumerable.Range(1, boardSize);
var verticalMoves = availableCoordinates.Where(y => startingLocation.Y != y)
.Select(y => new BoardCoordinate(startingLocation.X, y));
var horizontalMoves = availableCoordinates.Where(x => startingLocation.X != x)
.Select(x => new BoardCoordinate(x, startingLocation.Y));
return verticalMoves.Union(horizontalMoves);
}
public abstract IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize);
public Piece GetPiece(BoardCoordinate squareInQuestion)
{
return _pieces[squareInQuestion.X, squareInQuestion.Y];
}