def show_ticker_scene(self, new_ticker=False):
"""
Replace everything on screen with the scene displaying the drink ticker.
If the engine is not yet running, this method will start a new engine
and will block until the engine has stopped.
"""
# Instantiate objects
if not self._ticker_layer or new_ticker:
self._ticker_layer = BottomTicker(screen_width=self._width)
if not self._center_display_controller:
self._center_display_controller = CenterDisplayController()
if not self._title_layer:
self._title_layer = TitleLayer()
# Glue everything together
self._ticker_layer.update_drinks(self._drinks)
self._ticker_layer.on_focused_drink_changed += self._center_display_controller.drink_focused_changed
# Show the scene
scene = cocos.scene.Scene(self._ticker_layer,
self._center_display_controller.get_layer(),
self._title_layer)
self._display_scene(scene)
