/**
  * Get the location of the starting point (the world coordinates (0|0)).
  *
  * @return The starting point of the scrolling world.
  */
 public java.awt.Point getStartingPoint() {
   List<ScrollingActor> actors = getWorld().getObjects(ScrollingActor.class);
   if (actors != null && !actors.isEmpty()) {
     ScrollingActor actor = null;
     for (ScrollingActor scrollingActor : actors) {
       if (scrollingActor.isScrollingCenter()) {
         actor = scrollingActor;
       }
     }
     if (actor == null) {
       System.err.println("No scrollingActor in the world.");
       return null;
     }
     int x = actor.getX() + getWorld().getTotalXMovement();
     int y = actor.getY() + getWorld().getTotalYMovement();
     return new Point(x, y);
   }
   return null;
 }