auto scene = Scene::createWithPhysics();

scene->getPhysicsWorld()->setDebugDrawMask(PhysicsWorld::DEBUGDRAW_ALL);

auto layer = HelloWorld::create();

layer->setPhyWorld(scene->getPhysicsWorld());

var scene = cc.Scene.createWithPhysics();

    //scene.getPhysicsWorld().setDebugMode(true);

    var layer1 = new GameBackgroundLayer();

    var layer2 = new MainLayer();

    scene.addChild(layer1);

    scene.addChild(layer2);