/*
* Check whether the game has been completed.
*
- * For this purpose it doesn't matter where the source square
- * is, because we can start from anywhere and correctly
- * determine whether the game is completed.
+ * For this purpose it doesn't matter where the source square is,
+ * because we can start from anywhere (or, at least, any square
+ * that's non-empty!), and correctly determine whether the game is
+ * completed.
*/
{
- unsigned char *active = compute_active(ret, 0, 0);
- int x1, y1;
+ unsigned char *active;
+ int pos;
int complete = TRUE;
- for (x1 = 0; x1 < ret->width; x1++)
- for (y1 = 0; y1 < ret->height; y1++)
- if ((tile(ret, x1, y1) & 0xF) && !index(ret, active, x1, y1)) {
+ for (pos = 0; pos < ret->width * ret->height; pos++)
+ if (ret->tiles[pos] & 0xF)
+ break;
+
+ if (pos < ret->width * ret->height) {
+ active = compute_active(ret, pos % ret->width, pos / ret->width);
+
+ for (pos = 0; pos < ret->width * ret->height; pos++)
+ if ((ret->tiles[pos] & 0xF) && !active[pos]) {
complete = FALSE;
- goto break_label; /* break out of two loops at once */
- }
- break_label:
+ break;
+ }
- sfree(active);
+ sfree(active);
+ }
if (complete)
ret->completed = TRUE;