Stream

This part includes the APIs for setting up physics in the event,

App update

self._update_sub = omni.kit.app.get_app().get_update_event_stream().create_subscription_to_pop(
            self._on_update, name="omni.physx demo update"
        )

def _on_update(self, e):
    # dt = e.payload["dt"]

Physics update

self._physics_update_sub = omni.physx.get_physx_interface().subscribe_physics_step_events(self._on_physics_step)

def _on_physics_step(self, dt):
    # pass

Timeline event

stream = omni.timeline.get_timeline_interface().get_timeline_event_stream()
self._timeline_sub = stream.create_subscription_to_pop(self._on_timeline_event)

def _on_timeline_event(self, e):
    if e.type == int(omni.timeline.TimelineEventType.STOP):
        # pass

Stage event

stage_event_stream = self._usd_context.get_stage_event_stream()
        self._stage_event_sub = stage_event_stream.create_subscription_to_pop(self._on_stage_event)


def _on_stage_event(self, event):
    if event.type is int(omni.usd.StageEventType.CLOSING):
        # pass