/// <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>
/// Check the safeness of a coordinate (can be captured). if the sold is on boundary than safe (4) else return the
/// delta between number of player soldiers and number of Opp soldiers around the coord.
/// </summary>
/// <param name="board"></param>
/// <param name="coord"></param>
/// <param name="player"></param>
/// <returns></returns>
private int Safeness(Board board, Coordinate coord, Player player)
{
int playerCoords = 0;
int opponentCoords = 0;
Rules rule = new Rules();
if (coord.X == 1 || coord.X == 8 || coord.Y == 1 || coord.Y == 8)
{
return 4;
}
IList<Coordinate> coordinates = rule.OptionalMoves(board, coord, player);
foreach (var coordinate in coordinates)
{
if (player == board.GetPlayer(coordinate))
{
playerCoords++;
}
else if (board.GetOpponent(player) == board.GetPlayer(coordinate))
{
opponentCoords++;
}
}
return playerCoords - opponentCoords;
}