package nl.tudelft.goal.ut2004.selector;
   
   import java.util.Collection;
   import java.util.List;
   import java.util.Map;
   
   import cz.cuni.amis.pogamut.base.utils.math.DistanceUtils;
   import cz.cuni.amis.pogamut.base3d.worldview.object.ILocated;
   import cz.cuni.amis.pogamut.unreal.communication.messages.UnrealId;
  import cz.cuni.amis.pogamut.ut2004.communication.messages.ItemType;
  import cz.cuni.amis.pogamut.ut2004.communication.messages.gbinfomessages.Player;
  import cz.cuni.amis.utils.IFilter;
  import cz.cuni.amis.utils.collections.MyCollections;
  
  /**
   * Selects the closest friendly {@link Player}.
   * 
   * @author mpkorstanje
   * 
   */
  public final class NearestFriendlyWithLinkGun extends ContextSelector {
  
  	/* (non-Javadoc)
  	 * @see java.lang.Object#toString()
  	 */
  	@Override
  	public String toString() {
  		return "NearestFriendlyWithLinkGun";
  	}
  
  	@Override
  	public ILocated select(Collection<? extends ILocated> targets) {
  		
  		//Optimization, faster then selecting from collection.
  		Map<UnrealId, Player> friends = modules.getPlayers().getVisibleFriends();
  		List<Player> friendsWithLinkGun = MyCollections.getFiltered(friends.values(), new IFilter<Player>() {
  
  			@Override
  			public boolean isAccepted(Player p) {
  				return ItemType.LINK_GUN.equals(ItemType.getItemType(p.getWeapon()));
  			}
  		});
  		
  		return DistanceUtils.getNearest(friendsWithLinkGun, modules.getInfo().getLocation());
  	}
  
  }