private static void CheckCaptureVertical(IBoard board, ISquare originSquare, Square.NeighborDirection direction)
{
if (direction == Square.NeighborDirection.Left || direction == Square.NeighborDirection.Right)
{
throw new ArgumentException();
}
ISquare targetSquare = originSquare.Neighbors[direction];
if (targetSquare != null && targetSquare.IsOccupied && targetSquare.Occupant.Player != originSquare.Occupant.Player && !targetSquare.Occupant.IsKing)
{
IPiece deadPiece = null;
ISquare oppositeSquare = targetSquare.Neighbors[direction];
if (oppositeSquare != null && oppositeSquare.IsOccupied && oppositeSquare.Occupant.Player == originSquare.Occupant.Player)
{
deadPiece = targetSquare.Occupant;
}
else if (oppositeSquare == null && (targetSquare.Right == null || targetSquare.Left == null))
{
if ((targetSquare.Right == null && targetSquare.Left.Occupant != null && targetSquare.Left.Occupant.Player == originSquare.Occupant.Player) ||
(targetSquare.Left == null && targetSquare.Right.Occupant != null && targetSquare.Right.Occupant.Player == originSquare.Occupant.Player))
{
deadPiece = targetSquare.Occupant;
}
}
if (deadPiece != null)
{
deadPiece.Location = null;
targetSquare.Occupant = null;
board.Pieces.Remove(deadPiece);
}
}
}
public static List <Tuple <IPiece, ISquare> > ListValidMoves(IPiece piece, ISquare origin, Square.NeighborDirection direction)
{
List <Tuple <IPiece, ISquare> > validMoves = new List <Tuple <IPiece, ISquare> >();
ISquare nextSquare = origin.Neighbors[direction];
while (nextSquare != null && !nextSquare.IsOccupied)
{
if (piece.IsKing || !nextSquare.IsRestricted)
{
validMoves.Add(new Tuple <IPiece, ISquare>(piece, nextSquare));
}
nextSquare = nextSquare.Neighbors[direction];
}
return(validMoves);
}
