remove XrCameraBundle, use required components and component hooks instead

Signed-off-by: Schmarni <marnistromer@gmail.com>

crates/bevy_xr/src/camera.rs

@@ -3,25 +3,19 @@ use core::panic;
 use bevy::app::{App, Plugin, PostUpdate};
 use bevy::core_pipeline::core_3d::graph::Core3d;
 use bevy::core_pipeline::core_3d::Camera3d;
-use bevy::core_pipeline::tonemapping::{DebandDither, Tonemapping};
-use bevy::ecs::bundle::Bundle;
-use bevy::ecs::component::Component;
+use bevy::ecs::component::{Component, StorageType};
 use bevy::ecs::reflect::ReflectComponent;
 use bevy::ecs::schedule::IntoSystemConfigs;
 use bevy::math::{Mat4, Vec3A};
 use bevy::pbr::{
     build_directional_light_cascades, clear_directional_light_cascades, SimulationLightSystems,
 };
+use bevy::prelude::Projection;
 use bevy::reflect::std_traits::ReflectDefault;
 use bevy::reflect::Reflect;
-use bevy::render::camera::{
-    Camera, CameraMainTextureUsages, CameraProjection, CameraProjectionPlugin, CameraRenderGraph,
-    Exposure,
-};
+use bevy::render::camera::{CameraProjection, CameraProjectionPlugin};
 use bevy::render::extract_component::{ExtractComponent, ExtractComponentPlugin};
-use bevy::render::primitives::Frustum;
-use bevy::render::view::{update_frusta, ColorGrading, VisibilitySystems, VisibleEntities};
-use bevy::transform::components::{GlobalTransform, Transform};
+use bevy::render::view::{update_frusta, VisibilitySystems};
 use bevy::transform::TransformSystem;
 
 pub struct XrCameraPlugin;
@@ -48,12 +42,21 @@ impl Plugin for XrCameraPlugin {
     }
 }
 
-#[derive(Debug, Clone, Component, Reflect, ExtractComponent)]
+#[derive(Debug, Clone, Reflect, ExtractComponent)]
 #[reflect(Component, Default)]
 pub struct XrProjection {
     pub projection_matrix: Mat4,
     pub near: f32,
 }
+impl Component for XrProjection {
+    const STORAGE_TYPE: StorageType = StorageType::Table;
+
+    fn register_component_hooks(hooks: &mut bevy::ecs::component::ComponentHooks) {
+        hooks.on_add(|mut world, entity, _| {
+            world.commands().entity(entity).remove::<Projection>();
+        });
+    }
+}
 
 impl Default for XrProjection {
     fn default() -> Self {
@@ -66,6 +69,7 @@ impl Default for XrProjection {
 
 /// Marker component for an XR view. It is the backends responsibility to update this.
 #[derive(Clone, Copy, Component, ExtractComponent, Debug, Default)]
+#[require(Camera3d, XrProjection)]
 pub struct XrCamera(pub u32);
 
 impl CameraProjection for XrProjection {
@@ -106,42 +110,3 @@ impl CameraProjection for XrProjection {
         panic!("sub view not supported for xr camera");
     }
 }
-
-#[derive(Bundle)]
-pub struct XrCameraBundle {
-    pub camera: Camera,
-    pub camera_render_graph: CameraRenderGraph,
-    pub projection: XrProjection,
-    pub visible_entities: VisibleEntities,
-    pub frustum: Frustum,
-    pub transform: Transform,
-    pub global_transform: GlobalTransform,
-    pub camera_3d: Camera3d,
-    pub tonemapping: Tonemapping,
-    pub dither: DebandDither,
-    pub color_grading: ColorGrading,
-    pub exposure: Exposure,
-    pub main_texture_usages: CameraMainTextureUsages,
-    pub view: XrCamera,
-}
-
-impl Default for XrCameraBundle {
-    fn default() -> Self {
-        Self {
-            camera_render_graph: CameraRenderGraph::new(Core3d),
-            camera: Default::default(),
-            projection: Default::default(),
-            visible_entities: Default::default(),
-            frustum: Default::default(),
-            transform: Default::default(),
-            global_transform: Default::default(),
-            camera_3d: Default::default(),
-            tonemapping: Default::default(),
-            color_grading: Default::default(),
-            exposure: Default::default(),
-            main_texture_usages: Default::default(),
-            dither: DebandDither::Enabled,
-            view: XrCamera(0),
-        }
-    }
-}