+ // when wrapping around to opposite level border, use faster scrolling
+ if (game->cave->player_x == game->cave->x1 ||
+ game->cave->player_x == game->cave->x2 ||
+ game->cave->player_y == game->cave->y1 ||
+ game->cave->player_y == game->cave->y2)
+ scroll_speed *= 4;
+