# Initialize and set `head_tracker`
	fun initialize_head_tracker
	do
		# Initialize the Cardboard head orientation tracker service
		var head_tracker = new NativeHeadTracker(app.native_activity)
		head_tracker.neck_model_enabled = true
		head_tracker.start_tracking
		self.head_tracker = head_tracker

		# Set a wide field of view
		world_camera.field_of_view_y = 1.0
	end