Add headless wgpu vision and camera controls

crates/metacrate-grid-agent/src/backend.rs

@@ -746,6 +746,82 @@ impl crate::behavior::EmbodimentSink for LibremetaverseEmbodimentSink {
                 .map_err(|_| crate::behavior::BehaviorError::NativeOperation)
         })
     }
+
+    fn set_camera(
+        &self,
+        generation: u64,
+        position: crate::perception::WorldPosition,
+        target: crate::perception::WorldPosition,
+        vertical_fov_degrees: f64,
+        cancellation: CancellationToken,
+    ) -> crate::behavior::EmbodimentFuture<'_, ()> {
+        Box::pin(async move {
+            if cancellation.is_cancellation_requested() {
+                return Err(crate::behavior::BehaviorError::Cancelled);
+            }
+            self.ensure_generation(generation)?;
+            self.agent
+                .movement
+                .camera
+                .look_at_with_vector3_vector3(
+                    libremetaverse_types::Vector3 {
+                        x: position.x as f32,
+                        y: position.y as f32,
+                        z: position.z as f32,
+                    },
+                    libremetaverse_types::Vector3 {
+                        x: target.x as f32,
+                        y: target.y as f32,
+                        z: target.z as f32,
+                    },
+                )
+                .map_err(|_| crate::behavior::BehaviorError::NativeOperation)?;
+            self.agent
+                .movement
+                .set_fov_vertical_angle((vertical_fov_degrees as f32).to_radians())
+                .and_then(|()| self.agent.movement.send_update_with_boolean(Some(true)))
+                .map_err(|_| crate::behavior::BehaviorError::NativeOperation)
+        })
+    }
+
+    fn reset_camera(
+        &self,
+        generation: u64,
+        cancellation: CancellationToken,
+    ) -> crate::behavior::EmbodimentFuture<'_, ()> {
+        Box::pin(async move {
+            if cancellation.is_cancellation_requested() {
+                return Err(crate::behavior::BehaviorError::Cancelled);
+            }
+            self.ensure_generation(generation)?;
+            let avatar = self.agent.sim_position();
+            let forward = libremetaverse_types::Vector3::mul_with_vector3_quaternion(
+                libremetaverse_types::Vector3::unit_x(),
+                self.agent.sim_rotation(),
+            );
+            let position = libremetaverse_types::Vector3 {
+                x: avatar.x,
+                y: avatar.y,
+                z: avatar.z + 1.6,
+            };
+            let target = libremetaverse_types::Vector3 {
+                x: position.x + forward.x * 4.0,
+                y: position.y + forward.y * 4.0,
+                z: position.z + forward.z * 4.0,
+            };
+            self.agent
+                .movement
+                .camera
+                .look_at_with_vector3_vector3(position, target)
+                .and_then(|()| {
+                    self.agent
+                        .movement
+                        .set_fov_vertical_angle(60.0_f32.to_radians())
+                })
+                .and_then(|()| self.agent.movement.send_update_with_boolean(Some(true)))
+                .map_err(|_| crate::behavior::BehaviorError::NativeOperation)
+        })
+    }
 }
 
 #[cfg(feature = "live-grid")]