disable downward gravity.... =D

src/world.rs

@@ -43,6 +43,7 @@ impl Plugin for WorldPlugin {
         //app.add_systems(Update, swap_world_on_ar_toggle);
         app.add_plugins(PhysicsPlugins::default());
         app.insert_resource(ClearColor(Color::rgb(0.0, 0.0, 0.0)));
+        app.insert_resource(Gravity(Vec3::splat(0.0)));
     }
 }