Help with terrain + motion path

Troubleshooting SDK
1

Hi All
I need a little advice from old and wise monkeys in here :slight_smile:
I’m trying to modify HelloTerrainCollision example and make the camera walk on some predefined path (using MotionPath) taking into account the terrain structure (i.e. with bullet collision). for that I added a motionpath and connected the cam node (with CameraNode on cam). in simpleInitApp I added:

[java]
path = new MotionPath();
path.setCycle(true);
path.addWayPoint(new Vector3f(80, 2, 0));
path.addWayPoint(new Vector3f(0, 2, 80));
path.addWayPoint(new Vector3f(-80, 2, 0));
path.addWayPoint(new Vector3f(0, 2, -80));
path.setCurveTension(0.83f);
path.enableDebugShape(assetManager, rootNode);

    camNode = new CameraNode("Motion cam", cam);
    camNode.setControlDir(CameraControl.ControlDirection.SpatialToCamera);
    
    camNode.setEnabled(true);    
    
    cameraMotionControl = new MotionEvent(camNode, path);
    cameraMotionControl.setLoopMode(LoopMode.Loop);
    //cameraMotionControl.setDuration(15f);
    cameraMotionControl.setLookAt(player.getPhysicsLocation(), Vector3f.UNIT_Y);
    cameraMotionControl.setDirectionType(MotionEvent.Direction.LookAt);
    cameraMotionControl.play();
    cameraMotionControl.setSpeed(1);
    cameraMotionControl.setInitialDuration(10f);

[/java]

in update, the delta to a add to the camera is

[java]
camDir.set(cameraMotionControl.getDirection()).multLocal(0.06f);
walkDirection.addLocal(camDir);
[/java]

But, for some reason, cameraMotionControl.getDirection() returns a vector of zero no matter what I try…
Any idea ?

Thanks!