PRoblems with collision detection and TriggeringPath

Question

I don t know how to get back the object that caused collision with the main object.
When I use getTriggeringPath() method there is an error.
could someone give me a piece of code wher the method getTriggeringPath() work properly...
thank you
I really can not make ths method work!!

Answer 1

I wrote the following code for a behavior which checks for collisions. I haven't really ended up using it though, so I'm not entirely sure it works properly:
import javax.media.j3d.*;
import java.util.*;
import javax.vecmath.*;
public class CollisionCheck extends Behavior {
     private Node armingNode;
     private WakeupOr conditions;
     private WakeupOnCollisionEntry entryCondition;
     private WakeupOnCollisionExit exitCondition;
public CollisionCheck(Node armingNode) {
     this.armingNode = armingNode;
     entryCondition = new WakeupOnCollisionEntry
(armingNode,WakeupOnCollisionEntry.USE_GEOMETRY);
     exitCondition = new WakeupOnCollisionExit
(armingNode,WakeupOnCollisionExit.USE_GEOMETRY);
     WakeupCriterion[] wakeupCriteria = new WakeupCriterion[2];
     wakeupCriteria[0] = entryCondition;
     wakeupCriteria[1] = exitCondition;
     conditions = new WakeupOr(wakeupCriteria);
     public void initialize() {
          wakeupOn(conditions);
public void processStimulus( Enumeration criteria ) {
     while (criteria.hasMoreElements()) {
          Object condition = criteria.nextElement();
          if (condition instanceof WakeupOnCollisionEntry) {
          WakeupOnCollisionEntry w =
(WakeupOnCollisionEntry) condition ;
          Node triggerNode = w.getTriggeringPath().getObject();
          } else if (condition instanceof WakeupOnCollisionExit) {
          WakeupOnCollisionExit w = (WakeupOnCollisionExit)
condition;
          Node triggerNode = w.getTriggeringPath().getObject();
     wakeupOn(conditions);