don't use default on NavMeshBundle to make obvious handle reuse

examples/auto_navmesh_aabb.rs

@@ -94,7 +94,7 @@ fn setup(mut commands: Commands) {
             0.0,
         ))
         .with_scale(Vec3::splat(FACTOR)),
-        ..default()
+        ..NavMeshBundle::with_default_id()
     });
 
     // Spawn a few obstacles to start with.

examples/auto_navmesh_avian2d.rs

@@ -142,7 +142,7 @@ fn setup(
             ..default()
         },
         update_mode: NavMeshUpdateMode::Direct,
-        ..default()
+        ..NavMeshBundle::with_default_id()
     });
 }
 

examples/auto_navmesh_avian3d.rs

@@ -197,8 +197,7 @@ fn setup(
             transform: Transform::from_xyz(0.0, idx as f32 * height_step + 0.1, 0.0)
                 .with_rotation(Quat::from_rotation_x(FRAC_PI_2)),
             handle: Handle::<NavMesh>::weak_from_u128(idx as u128),
-
-            ..default()
+            ..NavMeshBundle::with_default_id()
         },));
     }
 }

examples/auto_navmesh_avian3d_inclined.rs

@@ -110,8 +110,7 @@ fn setup(
             transform: Transform::from_xyz(0.0, 0.1, 5.0)
                 .with_rotation(Quat::from_rotation_x(ANGLE) * Quat::from_rotation_x(FRAC_PI_2)),
             handle: Handle::<NavMesh>::weak_from_u128(0),
-
-            ..default()
+            ..NavMeshBundle::with_default_id()
         },
         NavMeshDebug(palettes::tailwind::RED_600.into()),
     ));

examples/auto_navmesh_primitive.rs

@@ -97,7 +97,7 @@ fn setup(mut commands: Commands) {
             0.0,
         ))
         .with_scale(Vec3::splat(FACTOR)),
-        ..default()
+        ..NavMeshBundle::with_default_id()
     });
 
     let mut rng = rand::thread_rng();

examples/demo.rs

@@ -233,7 +233,7 @@ fn setup(mut commands: Commands, mut materials: ResMut<Assets<StandardMaterial>>
         // Mark it for update as soon as obstacles are changed.
         // Other modes can be debounced or manually triggered.
         update_mode: NavMeshUpdateMode::Direct,
-        ..default()
+        ..NavMeshBundle::with_default_id()
     });
 
     materials.insert(

examples/gltf_avian3d.rs

@@ -197,7 +197,7 @@ fn setup_scene(
                     transform: Transform::from_rotation(Quat::from_rotation_x(FRAC_PI_2)),
                     // update_mode: NavMeshUpdateMode::Debounced(1.0),
                     update_mode: NavMeshUpdateMode::Direct,
-                    ..default()
+                    ..NavMeshBundle::with_default_id()
                 },
                 NavMeshDebug(palettes::tailwind::RED_400.into()),
             ));

examples/layers.rs

@@ -140,8 +140,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: NavMeshUpdateMode::Direct,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::FUCHSIA_800.into()),
             ));
@@ -231,8 +230,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: NavMeshUpdateMode::Direct,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::YELLOW_800.into()),
             ));
@@ -283,8 +281,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: NavMeshUpdateMode::Direct,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::TEAL_800.into()),
             ));
@@ -342,8 +339,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: NavMeshUpdateMode::Direct,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::TEAL_800.into()),
             ));

examples/layers_basic.rs

@@ -103,8 +103,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: NavMeshUpdateMode::Direct,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::YELLOW_600.into()),
             ));
@@ -156,8 +155,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: NavMeshUpdateMode::Direct,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::LIME_600.into()),
             ));

examples/layers_inclined.rs

@@ -113,8 +113,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: UPDATE_MODE,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::YELLOW_600.into()),
             ));
@@ -178,8 +177,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: UPDATE_MODE,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::BLUE_600.into()),
             ));
@@ -244,8 +242,7 @@ fn setup(
                         ..default()
                     },
                     update_mode: UPDATE_MODE,
-                    handle: Handle::<NavMesh>::weak_from_u128(0),
-                    ..default()
+                    ..NavMeshBundle::with_unique_id(0)
                 },
                 NavMeshDebug(palettes::tailwind::LIME_600.into()),
             ));

examples/primitive_3d.rs

@@ -117,7 +117,7 @@ fn setup(
             // Mark it for update as soon as obstacles are changed.
             // Other modes available are debounced or manual trigger.
             update_mode: NavMeshUpdateMode::Direct,
-            ..default()
+            ..NavMeshBundle::with_default_id()
         },
         NavMeshDebug(palettes::tailwind::SLATE_800.into()),
     ));

src/updater.rs

@@ -40,8 +40,21 @@ pub struct NavMeshBundle {
     pub update_mode: NavMeshUpdateMode,
 }
 
-impl Default for NavMeshBundle {
-    fn default() -> Self {
+impl NavMeshBundle {
+    /// Create a new `NavMeshBundle` with the provided id used for the handle of the `NavMesh`.
+    ///
+    /// In case there are several `NavMeshBundle`s with the same handle, they will overwrite each others unless they target different layers.
+    pub fn with_unique_id(id: u128) -> Self {
+        Self {
+            handle: Handle::<NavMesh>::weak_from_u128(id),
+            ..Self::with_default_id()
+        }
+    }
+
+    /// Create a new `NavMeshBundle` with the default handle for the `NavMesh`.
+    ///
+    /// In case there are several `NavMeshBundle`s with the same handle, they will overwrite each others unless they target different layers.
+    pub fn with_default_id() -> Self {
         Self {
             settings: NavMeshSettings::default(),
             status: NavMeshStatus::Invalid,
@@ -174,7 +187,6 @@ fn build_navmesh<T: ObstacleSource>(
     for _ in 0..settings.merge_steps {
         layer.merge_polygons();
     }
-    // layer.offset = mesh_transform.translation.xz() / mesh_transform.scale.xz();
     #[cfg(feature = "detailed-layers")]
     {
         layer.scale = scale;