added tracker markers and change detection

src/xr_input/mod.rs

@@ -1,6 +1,7 @@
 pub mod controllers;
 pub mod debug_gizmos;
 pub mod oculus_touch;
+pub mod trackers;
 pub mod xr_camera;
 
 use crate::resources::XrSession;
@@ -10,12 +11,16 @@ use crate::xr_input::oculus_touch::{setup_oculus_controller, ActionSets};
 use crate::xr_input::xr_camera::{xr_camera_head_sync, Eye, XRProjection, XrCameraBundle};
 use bevy::app::{App, PostUpdate, Startup};
 use bevy::log::warn;
-use bevy::prelude::{default, Commands, Component, Plugin, PreUpdate, Quat, Res, Vec3};
+use bevy::prelude::{
+    default, Commands, Component, Plugin, PreUpdate, Quat, Res, SpatialBundle, Vec3,
+};
 use bevy::prelude::{BuildChildren, IntoSystemConfigs};
 use bevy::render::camera::CameraProjectionPlugin;
 use bevy::render::view::{update_frusta, VisibilitySystems};
 use bevy::transform::{TransformBundle, TransformSystem};
 
+use self::trackers::{OpenXRLeftEye, OpenXRRightEye, OpenXRTrackingRoot};
+
 #[derive(Copy, Clone)]
 pub struct OpenXrInput {
     pub controller_type: XrControllerType,
@@ -26,9 +31,6 @@ pub enum Hand {
     Right,
 }
 
-#[derive(Component)]
-pub struct TrackingRoot;
-
 impl OpenXrInput {
     pub fn new(controller_type: XrControllerType) -> Self {
         Self { controller_type }
@@ -58,9 +60,15 @@ impl Plugin for OpenXrInput {
 fn setup_xr_cameras(mut commands: Commands) {
     //this needs to do the whole xr tracking volume not just cameras
     //get the root?
-    let tracking_root = commands.spawn((TransformBundle { ..default() }, TrackingRoot)).id();
-    let right = commands.spawn(XrCameraBundle::new(Eye::Right)).id();
-    let left = commands.spawn(XrCameraBundle::new(Eye::Left)).id();
+    let tracking_root = commands
+        .spawn((SpatialBundle::default(), OpenXRTrackingRoot))
+        .id();
+    let right = commands
+        .spawn((XrCameraBundle::new(Eye::Right), OpenXRRightEye))
+        .id();
+    let left = commands
+        .spawn((XrCameraBundle::new(Eye::Left), OpenXRLeftEye))
+        .id();
     commands.entity(tracking_root).push_children(&[right, left]);
 }