internal static string FromBoard(Board board)
{
StringBuilder sb = new StringBuilder();
int emptyCount = 0;
for (int rank = 8; rank >= 1; rank--)
{
for (int column = 1; column <= 8; column++)
{
var piece = board[rank, column];
if (piece == null)
{
emptyCount++;
continue;
}
if (emptyCount != 0)
sb.Append(emptyCount);
sb.Append(GetNotation(piece));
emptyCount = 0;
}
if (emptyCount != 0) sb.Append(emptyCount);
emptyCount = 0;
if (rank > 1)
sb.Append('/');
}
sb.Append(' ').Append(char.ToLower(board.CurrentPlayer.PlayerColor.ToString()[0]));
sb.Append(' ');
string castle = GetNotation(board.GetCastleAvailabity(PlayerColor.White), PlayerColor.White) + GetNotation(board.GetCastleAvailabity(PlayerColor.Black), PlayerColor.Black);
if (castle.Length == 0)
sb.Append('-');
else
sb.Append(castle);
sb.Append(' ');
if (board.LastMove != null && board.LastMove.Piece is Pawn && Math.Abs(board.LastMove.Source.GetRank() - board.LastMove.Target.GetRank()) == 2)
sb.Append(board.LastMove.Target.ToString().ToLower());
else
sb.Append('-');
sb.Append(' ')
.Append(board.History.Reverse().TakeWhile(i => !(i.Piece is Pawn) && i.CapturedPiece == null).Count())
.Append(' ')
.Append((int)(board.History.Count / 2));
return sb.ToString();
}
