- if(bdx && hit_in_bucket(b+1, x, y, shape)) return 1;
- if(bdy && hit_in_bucket(b+bw, x, y, shape)) return 1;
+ if(hit_in_bucket(b-1, x, y, shape)) return 1;
+ if(hit_in_bucket(b-bw, x, y, shape)) return 1;
+ if(hit_in_bucket(b-bw-1, x, y, shape)) return 1;
+
+ if(bdx) {
+ if(hit_in_bucket(b+1, x, y, shape)) return 1;
+ if(hit_in_bucket(b+1-bw, x, y, shape)) return 1;
+ }
+ if(bdy) {
+ if(hit_in_bucket(b+bw, x, y, shape)) return 1;
+ if(hit_in_bucket(b+bw-1, x, y, shape)) return 1;
+ }