anki_vector.events

Event handler used to make functions subscribe to robot events.

Classes

EventHandler(robot)	Listen for Vector events.
Events	List of events available.

class anki_vector.events.EventHandler(robot)

Listen for Vector events.

close()

Stop listening for events. Automatically called by the anki_vector.robot.Robot class.

async dispatch_event(event_data, event_type)

Dispatches event to event listeners.

async dispatch_event_by_name(event_data, event_name)

Dispatches event to event listeners by name.

import anki_vector

def event_listener(robot, name, msg):
    print(name) # will print 'my_event'
    print(msg) # will print 'my_event dispatched'

with anki_vector.Robot() as robot:
    robot.events.subscribe_by_name(event_listener, event_name='my_event')
    robot.conn.run_coroutine(robot.events.dispatch_event_by_name('my_event dispatched', event_name='my_event'))

Parameters

• event_data – Data to accompany the event.

• event_name (str) – The name of the event that will result in func being called.

start(connection)

Start listening for events. Automatically called by the anki_vector.robot.Robot class.

Parameters

• connection (Connection) – A reference to the connection from the SDK to the robot.

• loop – The loop to run the event task on.

subscribe(func, event_type, *args, **kwargs)

Receive a method call when the specified event occurs.

import anki_vector
from anki_vector.events import Events
from anki_vector.util import degrees
import threading

said_text = False

def on_robot_observed_face(robot, event_type, event, evt):
    print("Vector sees a face")
    global said_text
    if not said_text:
        said_text = True
        robot.behavior.say_text("I see a face!")
        evt.set()

with anki_vector.Robot(enable_face_detection=True) as robot:

    # If necessary, move Vector's Head and Lift to make it easy to see his face
    robot.behavior.set_head_angle(degrees(45.0))
    robot.behavior.set_lift_height(0.0)

    evt = threading.Event()
    robot.events.subscribe(on_robot_observed_face, Events.robot_observed_face, evt)

    print("------ waiting for face events, press ctrl+c to exit early ------")

    try:
        if not evt.wait(timeout=5):
            print("------ Vector never saw your face! ------")
    except KeyboardInterrupt:
        pass

robot.events.unsubscribe(on_robot_observed_face, Events.robot_observed_face)

Parameters

• func (Callable) – A method implemented in your code that will be called when the event is fired.

• event_type (Events) – The enum type of the event that will result in func being called.

• args – Additional positional arguments to this function will be passed through to the callback in the provided order.

• kwargs – Additional keyword arguments to this function will be passed through to the callback.

subscribe_by_name(func, event_name, *args, **kwargs)

Receive a method call when the specified event occurs.

import anki_vector

def event_listener(robot, name, msg):
    print(name) # will print 'my_event'
    print(msg) # will print 'my_event dispatched'

with anki_vector.Robot() as robot:
    robot.events.subscribe_by_name(event_listener, event_name='my_event')
    robot.conn.run_coroutine(robot.events.dispatch_event_by_name('my_event dispatched', event_name='my_event'))

Parameters

• func (Callable) – A method implemented in your code that will be called when the event is fired.

• event_name (str) – The name of the event that will result in func being called.

• args – Additional positional arguments to this function will be passed through to the callback in the provided order.

• kwargs – Additional keyword arguments to this function will be passed through to the callback.

unsubscribe(func, event_type)

Unregister a previously subscribed method from an event.

import anki_vector
from anki_vector.events import Events
from anki_vector.util import degrees
import threading

said_text = False

def on_robot_observed_face(robot, event_type, event, evt):
    print("Vector sees a face")
    global said_text
    if not said_text:
        said_text = True
        robot.behavior.say_text("I see a face!")
        evt.set()

with anki_vector.Robot(enable_face_detection=True) as robot:

    # If necessary, move Vector's Head and Lift to make it easy to see his face
    robot.behavior.set_head_angle(degrees(45.0))
    robot.behavior.set_lift_height(0.0)

    evt = threading.Event()
    robot.events.subscribe(on_robot_observed_face, Events.robot_observed_face, evt)

    print("------ waiting for face events, press ctrl+c to exit early ------")

    try:
        if not evt.wait(timeout=5):
            print("------ Vector never saw your face! ------")
    except KeyboardInterrupt:
        pass

robot.events.unsubscribe(on_robot_observed_face, Events.robot_observed_face)

Parameters

• func (Callable) – The enum type of the event you no longer wish to be called when an event fires.

• event_type (Events) – The name of the event for which you no longer want to receive a method call.

unsubscribe_by_name(func, event_name)

Unregister a previously subscribed method from an event.

import anki_vector

def event_listener(name, msg):
    print(name) # will print 'my_event'
    print(msg) # will print 'my_event dispatched'

with anki_vector.Robot() as robot:
    robot.events.subscribe_by_name(event_listener, event_name='my_event')
    robot.conn.run_coroutine(robot.events.dispatch_event_by_name('my_event dispatched', event_name='my_event'))

Parameters

• func (Callable) – The method you no longer wish to be called when an event fires.

• event_name (str) – The name of the event for which you no longer want to receive a method call.

class anki_vector.events.Events

List of events available.

attention_transfer = 'attention_transfer'

Robot event triggered when an attention cannot be fullfilled

audio_send_mode_changed = 'audio_send_mode_changed'

Robot event containing changes to the robot’s audio stream source data processing mode.

cube_connection_lost = 'cube_connection_lost'

Robot event triggered when an object’s subscribed connection has been lost.

nav_map_update = 'nav_map_update'

Python event containing nav map data.

new_camera_image = 'new_camera_image'

Python event containing a processed camera image (anki_vector.camera.CameraImage instance)

new_raw_camera_image = 'new_raw_camera_image'

Python event containing a raw camera image

object_appeared = 'object_appeared'

Python event triggered when an object first receives robot_observed_object.

object_available = 'object_available'

After the ConnectCube process is started, all available light cubes in range will broadcast an availability message through the Robot.

object_disappeared = 'object_disappeared'

Python event triggered when an object has not received a robot_observed_object for a specified time.

object_finished_move = 'object_finished_move'

Python event triggered in response to object_stopped_moving with duration data.

object_moved = 'object_moved'

Robot event triggered when an object starts moving.

object_observed = 'object_observed'

Python event triggered in response to robot_observed_object with sdk metadata.

object_stopped_moving = 'object_stopped_moving'

Robot event triggered when an object stops moving.

object_tapped = 'object_tapped'

Robot event triggered when an object is tapped.

object_up_axis_changed = 'object_up_axis_changed'

Robot event triggered when an object’s orientation changed.

robot_observed_face = 'robot_observed_face'

Robot event for when a face is observed by the robot.

robot_observed_object = 'robot_observed_object'

Robot event triggered when an object is observed by the robot.

robot_state = 'robot_state'

Robot event containing changes to the robot’s state.

stimulation_info = 'stimulation_info'

Robot event containing information about the robot’s stimulation.

time_stamped_status = 'time_stamped_status'

Robot event containing current feature status information

user_intent = 'user_intent'

Robot event triggered after Vector processes voice commands

wake_word = 'wake_word'

Robot event triggered when Vector hears “Hey Vector”