// converts a move to string notation for FEN
void move_to_str(move_t mv, char *buf, size_t bufsize) {
square_t f = from_square(mv); // from-square
square_t t = to_square(mv); // to-square
rot_t r = rot_of(mv); // rotation
const char *orig_buf = buf;
buf += square_to_str(f, buf, bufsize);
if (f != t) {
buf += square_to_str(t, buf, bufsize - (buf - orig_buf));
} else {
switch (r) {
case NONE:
buf += square_to_str(t, buf, bufsize - (buf - orig_buf));
break;
case RIGHT:
buf += snprintf(buf, bufsize - (buf - orig_buf), "R");
break;
case UTURN:
buf += snprintf(buf, bufsize - (buf - orig_buf), "U");
break;
case LEFT:
buf += snprintf(buf, bufsize - (buf - orig_buf), "L");
break;
default:
tbassert(false, "Whoa, now. Whoa, I say.\n"); // Bad, bad, bad
break;
}
}
}
char *move_to_fullalg(board_t *board, move_t *move)
{
char *s = (char *) malloc(6);
char prom[4] = "nbrq";
square_to_str(s, move->source);
square_to_str(s + 2, move->destination);
s[4] = '\0';
s[5] = '\0';
if ((PIECE(board->square[move->source]) == PAWN) && ((move->destination < 8) || (move->destination >= 56)))
s[4] = prom[(move->promotion_piece - 2) / 2];
return s;
}
