feat: add XrSessionDestroyedEvent to allow crate consumers to react to the destruction to, for example, start another session

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

crates/bevy_openxr/examples/actions.rs

@@ -139,7 +139,7 @@ fn handle_flight_input(
                         let view = views.first();
                         match view {
                             Some(v) => {
-                                let reference_quat = root_position.rotation.inverse() * v.pose.orientation.to_quat();
+                                let reference_quat = root_position.rotation * v.pose.orientation.to_quat();
                                 let locomotion_vector = reference_quat.mul_vec3(input_vector);
 
                                 root_position.translation +=

crates/bevy_openxr/src/openxr/init.rs

@@ -77,7 +77,7 @@ impl Default for OxrInitPlugin {
             backends: default(),
             formats: Some(vec![wgpu::TextureFormat::Rgba8UnormSrgb]),
             resolutions: default(),
-            synchronous_pipeline_compilation: default(),
+            synchronous_pipeline_compilation: false,
         }
     }
 }
@@ -118,9 +118,10 @@ impl Plugin for OxrInitPlugin {
                                 destroy_xr_session,
                                 (|v: Res<XrDestroySessionRender>| {
                                     v.0.store(true, Ordering::Relaxed);
-                                    info!("setting destroy render session");
+                                    debug!("setting destroy render session");
                                 }),
                             )
+                                .chain()
                                 .run_if(state_matches!(XrState::Exiting { .. }))
                                 .run_if(on_event::<XrDestroySessionEvent>),
                             begin_xr_session
@@ -132,6 +133,7 @@ impl Plugin for OxrInitPlugin {
                             request_exit_xr_session
                                 .run_if(session_created)
                                 .run_if(on_event::<XrRequestExitEvent>),
+                            detect_session_destroyed,
                         )
                             .in_set(XrHandleEvents::SessionStateUpdateEvents),
                     )
@@ -170,18 +172,37 @@ impl Plugin for OxrInitPlugin {
     fn finish(&self, app: &mut App) {
         app.sub_app_mut(RenderApp).add_systems(
             Render,
-            (destroy_xr_session, |v: Res<XrDestroySessionRender>| {
-                v.0.store(false, Ordering::Relaxed)
-            })
+            (
+                destroy_xr_session,
+                |v: Res<XrDestroySessionRender>, mut cmds: Commands| {
+                    v.0.store(false, Ordering::Relaxed);
+                    cmds.insert_resource(XrState::Available);
+                },
+            )
+                .chain()
                 .run_if(
                     resource_exists::<XrDestroySessionRender>
                         .and(|v: Res<XrDestroySessionRender>| v.0.load(Ordering::Relaxed)),
-                )
-                .chain(),
+                ),
         );
     }
 }
 
+fn detect_session_destroyed(
+    mut last_state: Local<bool>,
+    state: Res<XrDestroySessionRender>,
+    mut sender: EventWriter<XrSessionDestroyedEvent>,
+    mut cmds: Commands,
+) {
+    let state = state.0.load(Ordering::Relaxed);
+    if *last_state && !state {
+        debug!("XrSession was fully destroyed!");
+        sender.send_default();
+        cmds.insert_resource(XrState::Available);
+    }
+    *last_state = state;
+}
+
 impl OxrInitPlugin {
     fn init_xr(
         &self,

crates/bevy_xr/src/session.rs

@@ -46,10 +46,14 @@ pub struct XrPostSessionBegin;
 #[derive(Event, Clone, Copy, Default)]
 pub struct XrEndSessionEvent;
 
-/// Schedule thats rna whenever the XrSession is about to end
+/// Schedule thats ran whenever the XrSession is about to end
 #[derive(Clone, Copy, Default, PartialEq, Eq, Debug, Hash, ScheduleLabel)]
 pub struct XrPreSessionEnd;
 
+/// Event that is emitted when the XrSession is fully destroyed
+#[derive(Clone, Copy, Default, PartialEq, Eq, Debug, Hash, Event)]
+pub struct XrSessionDestroyedEvent;
+
 /// Event sent to backends to request the [`XrState`] proceed to [`Exiting`](XrState::Exiting) and for the session to be exited. Can be called at any time a session exists.
 #[derive(Event, Clone, Copy, Default)]
 pub struct XrRequestExitEvent;
@@ -130,6 +134,7 @@ impl Plugin for XrSessionPlugin {
             .add_event::<XrRequestExitEvent>()
             .add_event::<XrStateChanged>()
             .add_event::<XrSessionCreatedEvent>()
+            .add_event::<XrSessionDestroyedEvent>()
             .init_schedule(XrSessionCreated)
             .init_schedule(XrPreDestroySession)
             .init_schedule(XrPostSessionBegin)