public class MainVRxBulletDebugBug  extends SimpleApplication {

    public static void main(String[] args) {
        AppSettings settings = new AppSettings(true);
        settings.put(VRConstants.SETTING_VRAPI, VRConstants.SETTING_VRAPI_OPENVR_LWJGL_VALUE);
        settings.put(VRConstants.SETTING_ENABLE_MIRROR_WINDOW, true);

        VREnvironment env = new VREnvironment(settings);
        env.initialize();

    	// Checking if the VR environment is well initialized
    	// (access to the underlying VR system is effective, VR devices are detected).
    	if (env.isInitialized()){
            VRAppState vrAppState = new VRAppState(settings, env);
            vrAppState.setMirrorWindowSize(1024, 800);
            MainVRxBulletDebugBug app = new MainVRxBulletDebugBug(vrAppState, new BulletAppState());
            app.setLostFocusBehavior(LostFocusBehavior.Disabled);
            app.setSettings(settings);
            app.setShowSettings(false);
            app.start();
        }
    }

    public MainVRxBulletDebugBug(AppState... appStates) {
        super(appStates);
    }

    @Override
    public void simpleInitApp() {
        BulletAppState bulletAppState = getStateManager().getState(BulletAppState.class);
        bulletAppState.getPhysicsSpace().setGravity(new Vector3f(0, 2f, 0));
        bulletAppState.setDebugEnabled(true);
        
        Box b = new Box(1, 1, 1);
        Geometry geom = new Geometry("Box", b);

        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
        mat.setColor("Color", ColorRGBA.Green);
        geom.setMaterial(mat);
        
        RigidBodyControl rigidBodyControl = new RigidBodyControl(1.0f);
        geom.addControl(rigidBodyControl);
        bulletAppState.getPhysicsSpace().add(rigidBodyControl);

        rootNode.attachChild(geom);
    }

}