let world = World::new();
world.run(setup_physics).unwrap();

let body = RigidBodyBuilder::new_dynamic().translation(x, y);
let collider = ColliderBuilder::cuboid(rad, rad).density(1.0);
all_storages.add_entity((body, collider));

// Create rapier colliders, bodies and joints based on the shipyard components.
world.run(create_body_and_collider_system).unwrap();
world.run(create_joints_system).unwrap();

// Step the world based on a frame rate.
let frame_time = 60.0 / 1000.0; // 60 fps simulation
world.run_with_data(step_world_system, frame_time).unwrap();

// Remove any physics components from deleted entities.
world.run(destroy_body_and_collider_system).unwrap();