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Disable shuffle overlap checking in the special case w=h=n.
[sgt/puzzles]
/
twiddle.c
diff --git
a/twiddle.c
b/twiddle.c
index
8388f47
..
58b4cb5
100644
(file)
--- a/
twiddle.c
+++ b/
twiddle.c
@@
-363,7
+363,14
@@
static char *new_game_desc(game_params *params, random_state *rs,
*/
oldtotal = prevmoves[y*rw+x];
newtotal = oldtotal + r;
*/
oldtotal = prevmoves[y*rw+x];
newtotal = oldtotal + r;
- } while (abs(newtotal) < abs(oldtotal) || abs(newtotal) > 2);
+
+ /*
+ * Special case here for w==h==n, in which case
+ * there is actually no way to _avoid_ all moves
+ * repeating or undoing previous ones.
+ */
+ } while ((w != n || h != n) &&
+ (abs(newtotal) < abs(oldtotal) || abs(newtotal) > 2));
do_rotate(grid, w, h, n, params->orientable, x, y, r);
do_rotate(grid, w, h, n, params->orientable, x, y, r);