public GameScreen(ArcaneArts game){
        this.game = game;


        stage = new Stage();
        font = game.getFont(10, "FantaisieArtistique");
        label = new Label(" ", new Label.LabelStyle(font, Color.BLACK));
        stage.addActor(label);
        strBuilder = new StringBuilder();

        modelBatch = new ModelBatch();

        camera = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
        camera.position.set(10f, 10f, 10f);
        camera.lookAt(0,0,0);
        camera.near = 1f;
        camera.far = 300f;
        camera.update();

        environment = new Environment();
        environment.set(new ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1f));
        environment.add(new DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f));

        camController = new CameraInputController(camera);
        Gdx.input.setInputProcessor(camController);

        //Load 3d scene
        Model sceneModel = game.assetManager.get("3d/boxes.g3db", Model.class);

        for (int i = 0; i<sceneModel.nodes.size; i++){
            String id = sceneModel.nodes.get(i).id;
            GameObject instance = new GameObject(sceneModel, id, true);

            ColorAttribute attr = ColorAttribute.createDiffuse(MathUtils.random(), MathUtils.random(), MathUtils.random(), MathUtils.random());

            instance.materials.get(0).set(attr);

            instances.add(instance);
        }

        shader = new TestShader();
        shader.init();

    }

    private int visibleCount;
    @Override
    public void render(float delta) {
        camController.update();

        Gdx.gl.glViewport(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
        Gdx.gl.glClearColor(.5f, .5f, .5f, 1f);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT);

        visibleCount = 0;
        modelBatch.begin(camera);
        for (GameObject instance : instances)
            if (isVisible(camera, instance)){
                modelBatch.render(instance, shader);
                visibleCount++;
            }
        modelBatch.end();

        if (running)
            gameLogic(delta);

        strBuilder.setLength(0);
        strBuilder.append(" FPS ").append(Gdx.graphics.getFramesPerSecond())
        .append(" Visible: ").append(visibleCount);

        label.setText(strBuilder);
        stage.draw();
    }

    private Vector3 position = new Vector3();
    private boolean isVisible(final Camera camera, final GameObject instance){
        instance.transform.getTranslation(position);
        position.add(instance.center);
        System.out.println(instance.radius);
        return camera.frustum.sphereInFrustum(position, instance.radius);
    }