/// <summary>
/// returns the number of ways in which soldier on coord can be captured;
/// </summary>
/// <param name="board"></param>
/// <param name="coord"></param>
/// <param name="player"></param>
/// <returns></returns>
public int CanBeCaptured(Board board, Coordinate coord, Player player)
{
int num = 0;
Rules rule = new Rules();
IList<Coordinate> optionalCoords = rule.OptionalMoves(board, coord, player);
IList<Coordinate> coordsInDir = rule.GetMovesInDirection(board, coord, player);
//collect all coords behind coord
IList<Coordinate> coordsfrombehind = optionalCoords.Where(opCor => !coordsInDir.Contains(opCor)).ToList();
foreach (var cid in coordsInDir)
{
if (board.GetPlayer(board[cid.X, cid.Y]) == board.GetOpponent(player) &&
rule.CoordsToCaptureAndDest(board, cid, coord, board.GetOpponent(player)).Count > 0)
num++;
}
foreach (var cfb in coordsfrombehind)
{
if (board.GetPlayer(board[cfb.X, cfb.Y]) == board.GetOpponent(player) && board.IsKing(coord) &&
rule.CoordsToCaptureAndDest(board, cfb, coord, board.GetOpponent(player)).Count > 0)
num++;
}
return num;
}
/// <summary>
/// Checkes whether the coordinate can capture
/// </summary>
/// <param name="board"></param>
/// <param name="coordinate"></param>
/// <param name="player"></param>
/// <returns></returns>
private int CanCapture(Board board, Coordinate coordinate, Player player)
{
Rules rule = new Rules();
IList<Coordinate> coordinatesinDirection = rule.GetMovesInDirection(board, coordinate, player);
int max = 0;
foreach (var cid in coordinatesinDirection)
{
if (board.IsOpponentPiece(player, cid))
{
IDictionary<IList<Coordinate>, Coordinate> captures = rule.CoordsToCaptureAndDest(board, coordinate,
cid, player);
if (captures.Count > 0)
{
if (captures.ElementAt(0).Key.Count > max)
{
max = captures.ElementAt(0).Key.Count;
}
}
}
}
return max;
}
