thank you very much.

it works well when I have added moveForward() methord of the Bullet.java into the Car.java

hello, I was reviewing the demo the Car . It is a great work although I cant understand something about the collision.

I had made a  modification on the demo so that the collision would be detected when the car collide with a plant .

unfortunately that dosenot work and the program goes on running .Am I missing something? Thanks in advance.

this is what I have modified on the demo:

1  Car.java
   public Car() { 
     ...
    setCollisionMode(Object3D.COLLISION_CHECK_SELF|Object3D.COLLISION_CHECK_OTHERS); 
   }

2 BulletPlantListener.java
   
    ...
    public void collision(CollisionEvent e) {
      if (e.getType()==CollisionEvent.TYPE_TARGET && e.getSource()!=null) {
        
          if (e.getSource() instanceof Car) {
             System.out.println("Collide now");    //doesnot happen. sorry        
          }
    }
    ...
    }