just create a raycaster

src/bike.rs

@@ -146,16 +146,16 @@ fn spawn_children(
     let rear_rake = Vec3::new(0.0, -1.0, 0.9).normalize();
     let rear_wheel_pos = REAR_ATTACH + (rear_rake * REST_DISTANCE);
 
-    children!(
+    children![
         body,
-        wheel_caster(
-            parent,
-            FRONT_ATTACH,
-            Dir3::new_unchecked(front_rake),
-            REST_DISTANCE,
-            CyberWheel::Front,
+        (
+            RayCaster::new(FRONT_ATTACH, Dir3::new_unchecked(front_rake))
+                .with_max_hits(1)
+                .with_max_distance(REST_DISTANCE)
+                .with_query_filter(SpatialQueryFilter::from_excluded_entities([parent])),
+            CyberWheel::Front
         ),
-        wheel_mesh(
+        wheel_bundle(
             mesh.clone(),
             material.clone(),
             front_wheel_pos,
@@ -169,14 +169,14 @@ fn spawn_children(
             ),
             CyberWheel::Front,
         ),
-        wheel_caster(
-            parent,
-            REAR_ATTACH,
-            Dir3::new_unchecked(rear_rake),
-            REST_DISTANCE,
+        (
+            RayCaster::new(REAR_ATTACH, Dir3::new_unchecked(rear_rake))
+                .with_max_hits(1)
+                .with_max_distance(REST_DISTANCE)
+                .with_query_filter(SpatialQueryFilter::from_excluded_entities([parent])),
             CyberWheel::Rear,
         ),
-        wheel_mesh(
+        wheel_bundle(
             mesh,
             material,
             rear_wheel_pos,
@@ -190,29 +190,10 @@ fn spawn_children(
             ),
             CyberWheel::Rear,
         ),
-    )
+    ]
 }
 
-//-************************************************************************
-// helper fns for the wheels
-//-************************************************************************
-
-fn wheel_caster(
-    parent: Entity,
-    origin: Vec3,
-    direction: Dir3,
-    rest_dist: Scalar,
-    wheel: CyberWheel,
-) -> impl Bundle {
-    let caster = RayCaster::new(origin, direction)
-        .with_max_distance(rest_dist)
-        .with_max_hits(1)
-        .with_query_filter(SpatialQueryFilter::from_excluded_entities([parent]));
-
-    (caster, wheel)
-}
-
-fn wheel_mesh(
+fn wheel_bundle(
     mesh: Handle<Mesh>,
     material: Handle<StandardMaterial>,
     position: Vec3,