public static string toAlgebraicNotation(string s)
{
string an = null;
int c1, r1, c2, r2;
char piece;
if (Notations.parse(s, out c1, out r1, out c2, out r2) &&
(piece = Board.pieces[c1, r1]) != '\0')
{
an = piece.ToString();
PieceType type = Board.GetType(piece);
PieceColor color = Board.GetColor(piece);
if (Board.GetColor(piece) == PieceColor.WHITE)
{
an = an.ToLower();
}
char dest = Board.pieces[c2, r2];
if (dest != '\0' && Board.GetColor(dest) != color && Board.GetType(dest) != PieceType.KING)
{
an += "x";
}/*
* if (type != PieceType.PAWN && type > PieceType.QUEEN)
* {
* int i = Board.GetPos(piece, c1 * 8 + r1);
* if (i != -1)
* {
* int pc = i / 8;
* int pr = i % 8;
* int p2 = Board.pieces[pc, pr];
* int capture = -1;
* if (Board.ValidMove(type, pc, pr, c2, r2, out capture))
* {
* if (c1 == pc)
* an += Math.Abs(r1 - 8);
* else
* an += (char)(c1 + 97);
* }
* }
* }*/
an += string.Format("{0}{1}", (char)(c2 + 97), Math.Abs(r2 - 8));
if (dest != '\0' && Board.GetType(dest) == PieceType.KING)
{
an += "++";
}
}
return(an);
}
public static string fromAlgebraicNotation(string s)
{
//bool check = false;
if (s.Contains("+"))
{
s = s.Replace("+", "");
// check = true;
}
Queue <char> qc = new Queue <char>(s.ToArray());
char c = qc.Count < 3 ? 'p' : qc.Dequeue();
// bool capture = false;
char amb = '\0';
string nn = "";
PieceColor color = char.IsLower(c) ? PieceColor.WHITE : PieceColor.BLACK;
if (qc.Peek() == 'x')
{
// capture = true;
qc.Dequeue();
}
if (qc.Count == 3)
{
amb = qc.Dequeue();
}
Func <int, int> n1 = (a) => {
return(Math.Abs(a - 8));
};
int dcol = (((int)qc.Dequeue()) - 97);
int drow = n1(Math.Abs(((int)qc.Dequeue() - '0')));
int i = 0;
if (c == 'p' || c == 'P')
{
for (int n = 0; n < 8; n++)
{
if (Board.pieces[dcol, n] == c)
{
i = (dcol * 8) + n;
}
}
}
else
{
i = Board.GetPos(c);
}
int col = i / 8;
int row = i % 8;
int capture;
if (!Board.ValidMove(Board.GetType(c), col, row, dcol, drow, out capture) ||
amb != '\0' && (!char.IsDigit(amb) && (((int)amb) - 97) != col || (Math.Abs(((int)amb - '0') - 8)) != row))
{
if ((i = Board.GetPos(c, i)) != -1)
{
col = i / 8;
row = i % 8;
}
}
if (i != -1)
{
nn = string.Format("{0}x{1}:{2}x{3}", col, row, dcol, drow);
}
return(nn);
}