public BoardMove Find(StandardAlgebraicNotation san, Colours forPlayer)
{
var t = san.ToNotation();
if (san.CastleMove != StandardAlgebraicNotation.CastleSide.None)
{
return(FindCastleMove(san, forPlayer));
}
var destination = BoardLocation.At(san.ToFileX, san.ToRankY);
if (san.HaveFrom)
{
var exact = FindExactMove(san, destination);
if (exact == null)
{
Throw.MoveNotFound($"Move not found: {san.ToNotation()}");
}
return(exact);
}
var items = _boardState
.GetItems((int)forPlayer, (int)san.Piece)
.ThatCanMoveTo(destination);
if (TryFindMove(items, destination, san, out var move))
{
return(move);
}
if (san.FromFileX.HasValue)
{
items = items.Where(i => i.Paths.FlattenMoves().Any(m => m.From.X == san.FromFileX.Value));
if (TryFindMove(items, destination, san, out move))
{
return(move);
}
}
if (san.FromRankY.HasValue)
{
items = items.Where(i => i.Paths.FlattenMoves().Any(m => m.From.Y == san.FromRankY.Value));
if (TryFindMove(items, destination, san, out move))
{
return(move);
}
}
Throw.MoveNotFound($"Couldn't disambiguate move: {san.ToNotation()}");
return(null);
}
public bool ValidateMove(BoardMove move, IReadOnlyBoardState <TEntity> roBoardState)
{
var piece = roBoardState.GetItem(move.From);
if (piece == null)
{
return(false);
}
var owner = piece.Item.Owner;
var enemyPaths = new Paths();
var enemyItems = roBoardState.GetItems().Where(i => i.Item.Owner != owner);
enemyPaths.AddRange(enemyItems.SelectMany(li => li.Paths));
var attackMoveTypes = new [] { (int)DefaultActions.MoveOrTake, (int)DefaultActions.TakeOnly, (int)ChessMoveTypes.KingMove };
return(!enemyPaths.ContainsMoveTypeTo(move.To, attackMoveTypes));
}