carla/PythonAPI/docs/actor.yml

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---
- module_name: carla
# - CLASSES ------------------------------
classes:
- class_name: Actor
# - DESCRIPTION ------------------------
doc: >
CARLA defines actors as anything that plays a role in the simulation or can be moved around. That includes: pedestrians, vehicles, sensors and traffic signs (considering traffic lights as part of these). Actors are spawned in the simulation by carla.World and they need for a carla.ActorBlueprint to be created. These blueprints belong into a library provided by CARLA, find more about them [here](bp_library.md).
# - PROPERTIES -------------------------
instance_variables:
- var_name: attributes
type: dict
doc: >
A dictionary containing the attributes of the blueprint this actor was based on.
- var_name: id
type: int
doc: >
Identifier for this actor. Unique during a given episode.
- var_name: is_alive
type: bool
doc: >
Returns whether this object was destroyed using this actor handle.
- var_name: parent
type: carla.Actor
doc: >
Actors may be attached to a parent actor that they will follow around. This is said actor.
- var_name: semantic_tags
type: list(int)
doc: >
A list of semantic tags provided by the blueprint listing components for this actor. E.g. a traffic light could be tagged with "pole" and "traffic light". These tags are used by the semantic segmentation sensor. Find more about this and other sensors [here](ref_sensors.md#semantic-segmentation-camera).
- var_name: type_id
type: str
doc: >
The identifier of the blueprint this actor was based on, e.g. "vehicle.ford.mustang".
# - METHODS ----------------------------
methods:
- def_name: add_impulse
params:
- param_name: impulse
type: carla.Vector3D
doc: >
Adds an impulse to the actor. The parameter `impulse` determines magnitude and global axis where it is applied.
# --------------------------------------
- def_name: add_angular_impulse
params:
- param_name: impulse
type: carla.Vector3D
doc: >
Adds an angular impulse to the actor. The parameter `impulse` determines magnitude and global axis where it is applied.
# --------------------------------------
- def_name: destroy
return: bool
doc: >
Tells the simulator to destroy this actor and returns <b>True</b> if it was successful. It has no effect if it was already destroyed.
warning: >
This method blocks the script until the destruction is completed by the simulator.
# --------------------------------------
- def_name: get_acceleration
return: carla.Vector3D
doc: >
Returns the actor's 3D acceleration vector the client recieved during last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_angular_velocity
return: carla.Vector3D
doc: >
Returns the actor's angular velocity vector the client recieved during last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_location
return: carla.Location
doc: >
Returns the actor's location the client recieved during last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_transform
return: carla.Transform
doc: >
Returns the actor's transform (location and rotation) the client recieved during last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_velocity
return: carla.Vector3D
doc: >
Returns the actor's velocity vector the client recieved during last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_world
return: carla.World
doc: >
Returns the world this actor belongs to.
# --------------------------------------
- def_name: set_angular_velocity
params:
- param_name: angular_velocity
type: carla.Vector3D
doc: >
Changes the actor's angular velocity vector.
# --------------------------------------
- def_name: set_location
params:
- param_name: location
type: carla.Location
doc: >
Teleports the actor to a given location.
# --------------------------------------
- def_name: set_simulate_physics
params:
- param_name: enabled
type: bool
default: True
doc: >
Enables or disables the simulation of physics on this actor.
# --------------------------------------
- def_name: set_transform
params:
- param_name: transform
type: carla.Transform
doc: >
Teleports the actor to a given transform (location and rotation).
# --------------------------------------
- def_name: set_velocity
params:
- param_name: velocity
type: carla.Vector3D
doc: >
Sets the actor's velocity vector.
# --------------------------------------
- def_name: __str__
# --------------------------------------
- class_name: VehicleLightState
# - DESCRIPTION ------------------------
doc: >
Class that recaps the state of the lights of a vehicle, these can be used as a flags.
E.g: `VehicleLightState.HighBeam & VehicleLightState.Brake` will return `True` when both are active.
Lights are off by default in any situation and should be managed by the user via script.
The blinkers blink automatically.
_Warning: Right now, not all vehicles have been prepared to work with this functionality,
this will be added to all of them in later updates_
# - PROPERTIES -------------------------
instance_variables:
- var_name: NONE
doc: >
All lights off
- var_name: Position
- var_name: LowBeam
- var_name: HighBeam
- var_name: Brake
- var_name: RightBlinker
- var_name: LeftBlinker
- var_name: Reverse
- var_name: Fog
- var_name: Interior
- var_name: Special1
doc: >
This is reserved for certain vehicles that can have special lights, like a siren.
- var_name: Special2
doc: >
This is reserved for certain vehicles that can have special lights, like a siren.
- var_name: All
doc: >
All lights on
- class_name: Vehicle
parent: carla.Actor
# - DESCRIPTION ------------------------
doc: >
One of the most important group of actors in CARLA. These include any type of vehicle from cars to trucks, motorbikes, vans, bycicles and also official vehicles such as police cars. A wide set of these actors is provided in carla.BlueprintLibrary to facilitate differente requirements. Vehicles can be either manually controlled or set to an autopilot mode that will be conducted client-side by the <b>traffic manager</b>.
# - PROPERTIES -------------------------
instance_variables:
- var_name: bounding_box
type: carla.BoundingBox
doc: >
The vehicle's collider volume.
# - METHODS ----------------------------
methods:
- def_name: apply_control
params:
- param_name: control
type: carla.VehicleControl
doc: >
Applies a control object on the next tick, containing driving parameters such as throttle, steering or gear shifting.
# --------------------------------------
- def_name: apply_physics_control
params:
- param_name: physics_control
type: carla.VehiclePhysicsControl
doc: >
Applies a physics control object in the next tick containing the parameters that define the vehicle as a corporeal body. E.g.: moment of inertia, mass, drag coefficient and many more.
# --------------------------------------
- def_name: is_at_traffic_light
return: bool
doc: >
Vehicles will be affected by a traffic light when the light is red and the vehicle is inside its bounding box. The client returns whether a traffic light is affecting this vehicle according to last tick (it does not call the simulator).
# --------------------------------------
- def_name: get_control
return: carla.VehicleControl
doc: >
The client returns the control applied in the last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_light_state
return: carla.VehicleLightState
doc: >
Returns a flag representing the vehicle light state,
this represents which lights are active or not
# --------------------------------------
- def_name: get_physics_control
return: carla.VehiclePhysicsControl
doc: >
The simulator returns the last physics control applied to this vehicle.
warning: This function does call the simulator to retrieve the value.
# --------------------------------------
- def_name: get_speed_limit
return: float
doc: >
The client returns the speed limit affecting this vehicle according to last tick (it does not call the simulator). The speed limit is updated when passing by a speed limit signal, so a vehicle might have none right after spawning.
# --------------------------------------
- def_name: get_traffic_light
return: carla.TrafficLight
doc: >
Retrieves the traffic light actor affecting this vehicle (if any) according to last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_traffic_light_state
return: carla.TrafficLightState
doc: >
The client returns the state of the traffic light affecting this vehicle according to last tick. The method does not call the simulator.
If no traffic light is currently affecting the vehicle, returns <b>green</b>.
# --------------------------------------
- def_name: set_autopilot
params:
- param_name: enabled
type: bool
default: True
- param_name: port
type: uint16
default: 8000
doc: >
The port of the TM-Server where the vehicle is to be registered or unlisted. If __None__ is passed, it will consider a TM at default port `8000`.
doc: >
Registers or deletes the vehicle from a Traffic Manager's list. When __True__, the Traffic Manager passed as parameter will move the vehicle around. The autopilot takes place client-side.
# --------------------------------------
- def_name: set_light_state
params:
- param_name: light_state
type: carla.VehicleLightState
doc: >
Sets the light state of a vehicle using a flag that represents the lights that are on and off.
# --------------------------------------
- def_name: __str__
# --------------------------------------
- class_name: Walker
parent: carla.Actor
# - DESCRIPTION ------------------------
doc: >
This class inherits from the carla.Actor and defines pedestrians in the simulation. Walkers are a special type of actor that can be controlled either by an AI (carla.WalkerAIController) or manually via script, using a series of carla.WalkerControl to move these and their skeletons.
# - PROPERTIES -------------------------
instance_variables:
- var_name: bounding_box
type: carla.BoundingBox
doc: >
The walker's collider defined by a bounding box.
# - METHODS ----------------------------
methods:
- def_name: apply_control
params:
- param_name: control
type: carla.WalkerControl
doc: >
On the next tick, the control will move the walker in a certain direction with a certain speed. Jumps can be commanded too.
# --------------------------------------
- def_name: apply_control
params:
- param_name: control
type: carla.WalkerBoneControl
doc: >
On the next tick, the control defines a list of bone transformations that will be applied to the walker's skeleton.
# --------------------------------------
- def_name: get_control
return: carla.WalkerControl
doc: >
The client returns the control applied to this walker during last tick. The method does not call the simulator.
# --------------------------------------
- def_name: __str__
# --------------------------------------
- class_name: WalkerAIController
parent: carla.Actor
# - DESCRIPTION ------------------------
doc: >
Class that conducts AI control for a walker. The controllers are defined as actors, but they are quite different from the rest. They need to be attached to a parent actor during their creation, which is the walker they will be controlling (take a look at carla.World if you are yet to learn on how to spawn actors). They also need for a special blueprint (already defined in carla.BlueprintLibrary as "controller.ai.walker"). This is an empty blueprint, as the AI controller will be invisible in the simulation but will follow its parent around to dictate every step of the way.
# - METHODS ----------------------------
methods:
- def_name: go_to_location
params:
- param_name: destination
type: carla.Location
doc: >
Sets the destination that the pedestrian will reach.
# --------------------------------------
- def_name: start
doc: >
Enables AI control for its parent walker.
# --------------------------------------
- def_name: stop
doc: >
Disables AI control for its parent walker.
# --------------------------------------
- def_name: set_max_speed
params:
- param_name: speed
type: float
default: 1.4
doc: >
speed in m/s. An easy walking speed is set by default.
doc: >
Sets a speed for the walker in meters per second.
# --------------------------------------
- def_name: __str__
# --------------------------------------
- class_name: TrafficSign
parent: carla.Actor
# - DESCRIPTION ------------------------
doc: >
Traffic signs appearing in the simulation except for traffic lights. These have their own class inherited from this in carla.TrafficLight. Right now, speed signs, stops and yields are mainly the ones implemented, but many others are borne in mind.
# - PROPERTIES -------------------------
instance_variables:
- var_name: trigger_volume
doc: >
A carla.BoundingBox situated near a traffic sign where the carla.Actor who is inside can know about it.
# --------------------------------------
- class_name: TrafficLightState
# - DESCRIPTION ------------------------
doc: >
All possible states for traffic lights. These can either change at a specific time step or be changed manually. Take a look at this [recipe](ref_code_recipes.md#traffic-lights-recipe) to see an example.
# - PROPERTIES -------------------------
instance_variables:
- var_name: Red
- var_name: Yellow
- var_name: Green
- var_name: 'Off'
- var_name: Unknown
# --------------------------------------
- class_name: TrafficLight
parent: carla.TrafficSign
# - DESCRIPTION ------------------------
doc: >
A traffic light actor, considered a specific type of traffic sign. As traffic lights will mostly appear at junctions, they belong to a group which contains the different traffic lights in it. Inside the group, traffic lights are differenciated by their pole index.
Within a group the state of traffic lights is changed in a cyclic pattern: one index is chosen and it spends a few seconds in green, yellow and eventually red. The rest of the traffic lights remain frozen in red this whole time, meaning that there is a gap in the last seconds of the cycle where all the traffic lights are red. However, the state of a traffic light can be changed manually. Take a look at this [recipe](ref_code_recipes.md#traffic-lights-recipe) to learn how to do so.
# - PROPERTIES -------------------------
instance_variables:
- var_name: state
type: carla.TrafficLightState
doc: >
Current state of the traffic light.
# - METHODS ----------------------------
methods:
- def_name: freeze
params:
- param_name: freeze
type: bool
doc: >
Stops all the traffic lights in the scene at their current state.
# --------------------------------------
- def_name: is_frozen
return: bool
doc: >
The client returns <b>True</b> if a traffic light is frozen according to last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_elapsed_time
return: float
doc: >
The client returns the time in seconds since current light state started according to last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_group_traffic_lights
return: list(carla.TrafficLight)
doc: >
Returns all traffic lights in the group this one belongs to.
note: >
This function calls the simulator.
# --------------------------------------
- def_name: reset_group
doc: >
Resets the state of the traffic lights of the group to the initial state at the start of the simulation.
note: >
This function calls the simulator.
# --------------------------------------
- def_name: get_pole_index
return: int
doc: >
Returns the index of the pole that identifies it as part of the traffic light group of a junction.
# --------------------------------------
- def_name: get_state
return: carla.TrafficLightState
doc: >
The client returns the state of the traffic light according to last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_green_time
return: float
doc: >
The client returns the seconds set for the traffic light to be green according to last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_red_time
return: float
doc: >
The client returns the seconds set for the traffic light to be red according to last tick. The method does not call the simulator.
# --------------------------------------
- def_name: get_yellow_time
return: float
doc: >
The client returns the the seconds set for the traffic light to be yellow according to last tick. The method does not call the simulator.
# --------------------------------------
- def_name: set_state
params:
- param_name: state
type: carla.TrafficLightState
doc: >
Sets a given state to a traffic light actor.
# --------------------------------------
- def_name: set_green_time
params:
- param_name: green_time
type: float
doc: >
Sets a given time (in seconds) for the green light to be active.
# --------------------------------------
- def_name: set_red_time
params:
- param_name: red_time
type: float
doc: >
Sets a given time (in seconds) for the red state to be active.
# --------------------------------------
- def_name: set_yellow_time
params:
- param_name: yellow_time
type: float
doc: >
Sets a given time (in seconds) for the yellow light to be active.
# --------------------------------------
- def_name: __str__
# --------------------------------------
...