diff options
| -rw-r--r-- | filling.c | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -414,10 +414,15 @@ retry: int merge = SENTINEL, min = maxsize - size + 1; bool error = false; int neighbour, neighbour_size, j; + int directions[4]; + + for (j = 0; j < 4; ++j) + directions[j] = j; + shuffle(directions, 4, sizeof(int), rs); for (j = 0; j < 4; ++j) { - const int x = (board[i] % w) + dx[j]; - const int y = (board[i] / w) + dy[j]; + const int x = (board[i] % w) + dx[directions[j]]; + const int y = (board[i] / w) + dy[directions[j]]; if (x < 0 || x >= w || y < 0 || y >= h) continue; neighbour = dsf_canonify(dsf, w*y + x); |