+ st->radius = s_radius;
+ if (st->radius < 5) st->radius = 5;
+ if (st->radius > 200) st->radius = 200;
+ st->radius *= st->screen_scale;
+
+ st->move_dist = s_min_dist;
+ if (st->move_dist < 1.0) st->move_dist = 1.0;
+ if (st->move_dist > 3.0) st->move_dist = 3.0;
+ st->move_dist *= st->radius;
+