internal static IMove ParseChessmanMove(string moveString, bool color, Board board)
{
var to = MoveParser.GetToPosition(moveString);
var isPieceType = PieceParser.ParsePieceTypePredicate(moveString[0]);
var pieces = PiecesThatCanBeMovedTo(to, isPieceType, board);
if (moveString.Length > 3 && moveString[1] != 'x')
{
pieces = SelectPiecesByPosition(moveString, pieces, board);
}
if (pieces.Count() != 1)
{
throw new ArgumentException();
}
var piece = pieces.First();
var move = new Move(piece, to, board);
if (move.IsCapture == (moveString[1] == 'x') && piece.IsMovePossible(move))
{
return(move);
}
throw new ArgumentException();
}
private static (Pawn, Position) GetPawnAndToPosition(string pawnMoveString, bool color, Board board)
{
var to = MoveParser.GetToPosition(pawnMoveString);
var from = GetPawnPosition(pawnMoveString, to, color, board);
var piece = GetPieceAtPosition(board, from);
if (piece.Color != color || piece is Pawn)
{
return((Pawn)piece, to);
}
throw new ArgumentException();
}
