protected 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 void AddPiece(Piece piece, BoardCoordinate moveTarget)
{
if (!moveTarget.IsCoordinateValidForBoardSize(BoardSize))
{
throw new ArgumentException("moveTarget");
}
this.pieces[moveTarget.X, moveTarget.Y] = piece;
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize = Board.DefaultBoardSize)
{
yield return new BoardCoordinate(startingLocation.X, startingLocation.Y + 1);
if (!this.HasMoved)
{
yield return new BoardCoordinate(startingLocation.X, startingLocation.Y + 2);
}
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize = Board.DefaultBoardSize)
{
var allDistancesFromStartingLocation = Enumerable.Range(1, boardSize + 1);
var allPossibleBoardCoordinates = allDistancesFromStartingLocation.SelectMany(sp => GetRadialDiagonalFrom(startingLocation, sp));
var legalBoardCoordinates = allPossibleBoardCoordinates.Where(bc => bc.IsCoordinateValidForBoardSize(boardSize));
return legalBoardCoordinates;
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize = Board.DefaultBoardSize)
{
var availableCoorinates = Enumerable.Range(1, boardSize);
var verticalMoves = availableCoorinates.Where(y => startingLocation.Y != y)
.Select(y => new BoardCoordinate(startingLocation.X, y));
var horizonalMoves = availableCoorinates.Where(x => startingLocation.X != x)
.Select(x => new BoardCoordinate(x, startingLocation.Y));
return verticalMoves.Union(horizonalMoves);
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize = Board.DefaultBoardSize)
{
var allPotentialMoves = new List<BoardCoordinate>
{
new BoardCoordinate(startingLocation.X + 2, startingLocation.Y + 1),
new BoardCoordinate(startingLocation.X + 2, startingLocation.Y - 1),
new BoardCoordinate(startingLocation.X + 1, startingLocation.Y + 2),
new BoardCoordinate(startingLocation.X + 1, startingLocation.Y - 2),
new BoardCoordinate(startingLocation.X - 2, startingLocation.Y + 1),
new BoardCoordinate(startingLocation.X - 2, startingLocation.Y - 1),
new BoardCoordinate(startingLocation.X - 1, startingLocation.Y + 2),
new BoardCoordinate(startingLocation.X - 1, startingLocation.Y - 2)
};
return allPotentialMoves.Where(bc => bc.IsCoordinateValidForBoardSize(boardSize));
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize = Board.DefaultBoardSize)
{
var movesWithinABoardSize = GetAllRadialMovesFrom(startingLocation, boardSize);
return movesWithinABoardSize.Where(bc => bc.IsCoordinateValidForBoardSize(boardSize));
}
public Piece GetPiece(BoardCoordinate squareIn)
{
return this.pieces[squareIn.X, squareIn.Y];
}
public abstract IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize = Board.DefaultBoardSize);
protected static IEnumerable<BoardCoordinate> GetRadialDiagonalFromInclusive(BoardCoordinate startingPosition, int distance)
{
var squaresToRadiate = Enumerable.Range(1, distance);
return squaresToRadiate.SelectMany(sq => GetRadialDiagonalFrom(startingPosition, sq));
}
protected static IEnumerable<BoardCoordinate> GetAllRadialMovesFrom(BoardCoordinate startingLocation, int distance)
{
return GetRadialDiagonalFromInclusive(startingLocation, distance)
.Union(GetRadialAdjacentFromInclusive(startingLocation, distance));
}
public override IEnumerable<BoardCoordinate> GetMovesFrom(BoardCoordinate startingLocation, int boardSize = Board.DefaultBoardSize)
{
var oneSquareAwayMoves = GetAllRadialMovesFrom(startingLocation, 1);
return oneSquareAwayMoves.Where(bc => bc.IsCoordinateValidForBoardSize(boardSize));
}
