package nl.tudelft.pogamut.unreal.agent.module.shooting.util;
   
   import java.util.ArrayList;
   import java.util.List;
   
   import cz.cuni.amis.pogamut.base3d.worldview.object.ILocated;
   import cz.cuni.amis.pogamut.base3d.worldview.object.Location;
   
   /**
   * A list of focus providers. First provider to provide a non-null location be
   * used.
   * 
   * @author mpkorstanje
   * 
   */
  public final class OrderedFocusProvider implements ILocated {
  
  	protected List<ILocated> providers = new ArrayList<ILocated>();
  
  	public void add(ILocated provider) {
  		providers.add(provider);
  	}
  
  	@Override
  	public Location getLocation() {
  		for (ILocated focus : providers) {
  			if (focus.getLocation() != null) {
  				return focus.getLocation();
  			}
  		}
  
  		return null;
  	}
  
  }