/// <summary>
/// Converts the ChessState to a FEN board
/// </summary>
/// <returns>FEN board</returns>
public string ToFenBoard()
{
StringBuilder strBuild = new StringBuilder();
strBuild.Append(CurrentBoard.ToPartialFenBoard());
if (CurrentPlayerColor == ChessColor.White)
{
strBuild.Append(" w");
}
else
{
strBuild.Append(" b");
}
//place holder for castling (not currently supported)
strBuild.Append(" " + CastlingToFen());
//place holder for en passant (not currently supported)
strBuild.Append(EnPassantToFen());
//half and full moves
strBuild.Append(" " + HalfMoves.ToString() + " " + FullMoves.ToString());
return(strBuild.ToString());
}
public void Process(char c, ref IProcess step)
{
if ((c >= 'a') && (c <= 'h'))
{
if (this.result.EnPassantSquare != null)
{
this.result.Error = true;
step = null;
}
this.result.EnPassantSquare = $"{c}";
}
else if ((c >= '1') && (c <= '8'))
{
if ((this.result.EnPassantSquare == null) ||
(this.result.EnPassantSquare.Length != 1)
)
{
this.result.Error = true;
step = null;
return;
}
char ep = this.result.EnPassantSquare[0];
if ((ep < 'a') || (ep > 'h'))
{
this.result.Error = true;
step = null;
}
this.result.EnPassantSquare += $"{c}";
}
else if (c == '-')
{
if (this.processedChar)
{
this.result.Error = true;
step = null;
}
this.result.EnPassantSquare = "-";
}
else if (c == ' ')
{
step = new HalfMoves(this.result);
}
else
{
this.result.Error = true;
step = null;
}
this.processedChar = true;
}
