package greenfoot.gui.input.mouse;

import greenfoot.Actor;
import threadchecker.OnThread;
import threadchecker.Tag;




| Interface for locating actors and coordinates in the world.
|
| @author Poul Henriksen
|
public interface WorldLocator
{       



| Gets the top most actor at the given location.
| @param worldPixelPositionX The X pixel position in the world (not cell position)
| @param worldPixelPositionY The Y pixel position in the world (not cell position)
| @return The top most actor, or null if no actor.
|
@OnThread(Tag.Simulation)
   
   public Actor getTopMostActorAt(int worldPixelPositionX, int worldPixelPositionY);

   
   


| Translates the coordinates from the given source component into some other coordinate system.
| @param worldPixelPositionX The X pixel position in the world (not cell position)
| @return The new x-coordinate
|
public int getTranslatedX(int worldPixelPositionX);
    

   
   


| Translates the coordinates from the given source component into some other coordinate system.
| @param worldPixelPositionY The Y pixel position in the world (not cell position)
| @return The new y-coordinate
|
public int getTranslatedY(int worldPixelPositionY); 
   }