simplify wheels

src/action/systems.rs

@@ -76,7 +76,7 @@ pub(super) fn falling_cat(
     {
         let now = Instant::now();
         if (now - debug_instant.0).as_millis() > 500 {
-            dbg!(roll_error, pitch_error, &control_vars, mag);
+            //dbg!(roll_error, pitch_error, &control_vars, mag);
             debug_instant.0 = now;
         }
     }

src/bike/wheels.rs

@@ -93,18 +93,8 @@ pub fn spawn_tires(
 
         let revolute_builder = RevoluteJointBuilder::new(Vec3::X);
         let axel_joint = MultibodyJoint::new(fork_rb_entity, revolute_builder);
-
-        let spatial_bundle = SpatialBundle {
-            ..Default::default()
-        };
-
-        let tire_spundle = SpatialBundle {
-            ..Default::default()
-        };
-
         commands
             .spawn(RigidBody::Dynamic)
-            .insert(spatial_bundle)
             .insert((
                 wheel_collider,
                 mass_props,
@@ -117,14 +107,8 @@ pub fn spawn_tires(
                 CyberWheel,
                 ExternalForce::default(),
                 Restitution::new(0.2),
+                SpatialBundle::default(),
             ))
-            .with_children(|wheel| {
+            .insert(pbr_bundle.clone());
-                wheel.spawn(tire_spundle).insert(pbr_bundle.clone()).insert(
-                    TransformInterpolation {
-                        start: None,
-                        end: None,
-                    },
-                );
-            });
     }
 }

src/planet.rs

@@ -26,7 +26,7 @@ fn spawn_planet(
     let pcollide = (
         shape,
         Friction {
-            coefficient: 0.05,
+            coefficient: 0.8,
             ..Default::default()
         },
         Restitution::new(0.0),