while(*p) { // more moves to go
int expo = 1, dx, dy, x, y, mode, dirSet, ds2=0, retry=0, initial=0, jump=1, skip = 0, all = 0;
char *cont = NULL;
- if(*p == 'i') initial = 1, desc = ++p;
+ while(*p == 'i') initial++, desc = ++p;
while(islower(*p)) p++; // skip prefixes
if(!isupper(*p)) return; // syntax error: no atom
dx = xStep[*p-'A'] - '0';// step vector of atom
if(isdigit(*++p)) expo = atoi(p++); // read exponent
if(expo > 9) p++; // allow double-digit
desc = p; // this is start of next move
+ if(initial == 2) { if(board[r][f] != initialPosition[r-2*his+3][f]) continue; } else
if(initial && (board[r][f] != initialPosition[r][f] ||
r == 0 && board[TOUCHED_W] & 1<<f ||
r == BOARD_HEIGHT-1 && board[TOUCHED_B] & 1<<f ) ) continue;
if(y < 0 || y >= BOARD_HEIGHT) break; // vertically off-board: always done
if(x < BOARD_LEFT) { if(mode & 128) x += BOARD_RGHT - BOARD_LEFT, loop++; else break; }
if(x >= BOARD_RGHT) { if(mode & 128) x -= BOARD_RGHT - BOARD_LEFT, loop++; else break; }
- if(board[y][x] == DarkSquare) break; // black squares are supposed to be off board
if(j) { j--; continue; } // skip irrespective of occupation
+ if(board[y][x] == DarkSquare) break; // black squares are supposed to be off board
if(!jump && board[y - vy + vy/2][x - vx + vx/2] != EmptySquare) break; // blocked
if(jump > 1 && board[y - vy + vy/2][x - vx + vx/2] == EmptySquare) break; // no hop
if(x == f && y == r && !loop) occup = 4; else // start square counts as empty (if not around cylinder!)