class CarlaRunner:
def __init__(self,
carla_settings: CarlaConfig,
agent_settings: AgentConfig,
npc_agent_class,
competition_mode=False,
max_collision=1000):
"""
Args:
carla_settings:
agent_settings:
npc_agent_class:
competition_mode: if True, will exist when max_collision is reached
max_collision: number of maximum collision allowed
"""
self.carla_settings = carla_settings
self.agent_settings = agent_settings
self.carla_bridge = CarlaBridge()
self.npc_agent_class = npc_agent_class
self.world = None
self.client = None
self.controller = None
self.display = None
self.agent = None
self.npc_agents: Dict[npc_agent_class, Any] = {}
self.agent_collision_counter = 0
self.competition_mode = competition_mode
self.max_collision = max_collision
self.start_simulation_time: Optional[float] = None
self.start_vehicle_position: Optional[np.array] = None
self.end_simulation_time: Optional[float] = None
self.end_vehicle_position: Optional[np.array] = None
self.logger = logging.getLogger(__name__)
self.timestep_counter = 0
def set_carla_world(self) -> Vehicle:
"""
Initiating the vehicle with loading messages
Returns:
Vehicle Information
"""
try:
pygame.init()
pygame.font.init()
self.logger.debug(f"Connecting to {self.carla_settings.host}: "
f"{self.carla_settings.port}")
self.client = carla.Client(self.carla_settings.host,
self.carla_settings.port)
self.client.set_timeout(self.carla_settings.timeout)
self.display = pygame.display.set_mode(
(self.carla_settings.width, self.carla_settings.height),
pygame.HWSURFACE | pygame.DOUBLEBUF)
self.logger.debug(f"Setting HUD")
hud = HUD(self.carla_settings.width, self.carla_settings.height)
self.logger.debug("Setting up world")
self.world = World(carla_world=self.client.get_world(),
hud=hud,
carla_settings=self.carla_settings,
agent_settings=self.agent_settings)
if self.carla_settings.should_spawn_npcs:
self.spawn_npcs()
self.logger.debug(f"Connecting to Keyboard controls")
self.controller = KeyboardControl(
world=self.world, carla_setting=self.carla_settings)
self.logger.debug("All settings done")
return self.carla_bridge. \
convert_vehicle_from_source_to_agent(self.world.player)
except Exception as e:
self.logger.error(
f"Unable to initiate the world due to error: {e}")
raise e
def start_game_loop(self,
agent,
use_manual_control=False,
max_timestep=1e20):
"""Start running the vehicle and stop when finished running
the track"""
self.agent = agent
try:
self.logger.debug("Initiating game")
self.agent.start_module_threads()
clock = pygame.time.Clock()
self.start_simulation_time = self.world.hud.simulation_time
self.start_vehicle_position = self.agent.vehicle.transform.location.to_array(
)
while True and self.timestep_counter < max_timestep:
# make sure the program does not run above 60 frames per second
# this allow proper synchrony between server and client
clock.tick_busy_loop(60)
should_continue, carla_control = self.controller.parse_events(
client=self.client, world=self.world, clock=clock)
self.agent_collision_counter = self.get_num_collision()
if self.competition_mode and self.agent_collision_counter > self.max_collision:
should_continue = False
if not should_continue:
break
self.world.tick(clock)
self.world.render(display=self.display)
pygame.display.flip()
sensor_data, new_vehicle = self.convert_data()
if self.carla_settings.save_semantic_segmentation and self.world.semantic_segmentation_sensor_data:
self.world.semantic_segmentation_sensor_data.save_to_disk(
(Path("./data/output") / "ss" /
f"frame_{self.agent.time_counter}.png").as_posix(),
cc.CityScapesPalette)
if self.carla_settings.should_spawn_npcs:
self.execute_npcs_step()
if self.agent_settings.enable_autopilot:
if self.agent is None:
raise Exception(
"In autopilot mode, but no agent is defined.")
agent_control = self.agent.run_step(
vehicle=new_vehicle, sensors_data=sensor_data)
if not use_manual_control:
carla_control = self.carla_bridge. \
convert_control_from_agent_to_source(agent_control)
self.world.player.apply_control(carla_control)
self.timestep_counter += 1
except Exception as e:
self.logger.error(f"Error happened, exiting safely. Error: {e}")
finally:
self.on_finish()
def on_finish(self):
self.logger.debug("Ending Game")
if self.agent is not None:
self.end_vehicle_position = self.agent.vehicle.transform.location.to_array(
)
else:
self.end_vehicle_position = self.start_vehicle_position
if self.world is not None:
self.end_simulation_time = self.world.hud.simulation_time
self.world.destroy()
self.logger.debug("All actors are destroyed")
try:
pygame.quit()
except Exception as e:
self.logger.debug(
f"Cannot quit pygame normally, force quitting. Error: {e}")
self.logger.debug("Game ended")
def convert_data(self) -> Tuple[SensorsData, Vehicle]:
"""
Convert data from source to agent
Returns:
sensors_data: sensor data for agent
new_vehicle: the current player's vehicle state
"""
sensor_data: SensorsData = \
self.carla_bridge.convert_sensor_data_from_source_to_agent(
{
"front_rgb": None if self.world.front_rgb_sensor_data is None
else self.world.front_rgb_sensor_data,
"rear_rgb": None if self.world.rear_rgb_sensor_data is None
else self.world.rear_rgb_sensor_data,
"front_depth":
None if self.world.front_depth_sensor_data is None else
self.world.front_depth_sensor_data,
"imu": self.world.imu_sensor
}
)
new_vehicle = self.carla_bridge.convert_vehicle_from_source_to_agent(
self.world.player)
return sensor_data, new_vehicle
def execute_npcs_step(self):
# TODO this can be parallelized
try:
for agent, actor in self.npc_agents.items():
new_vehicle = self.carla_bridge.convert_vehicle_from_source_to_agent(
actor)
curr_control: VehicleControl = agent.run_step(
sensors_data=SensorsData(), vehicle=new_vehicle)
carla_control = self.carla_bridge.convert_control_from_agent_to_source(
curr_control)
actor.apply_control(carla_control)
except Exception as e:
self.logger.error(f"Failed to execute step for NPC. "
f"Error: {e}")
def spawn_npcs(self):
# parse npc file
npc_config_file_path = Path(self.carla_settings.npc_config_file_path)
assert npc_config_file_path.exists(
), f"NPC file path {npc_config_file_path.as_posix()} does not exist"
npc_configs = json.load(npc_config_file_path.open('r'))
npc_configs: List[AgentConfig] = [
AgentConfig.parse_obj(config) for config in npc_configs
]
self.world.spawn_npcs(npc_configs)
self.npc_agents = {
self.npc_agent_class(vehicle=actor, agent_settings=npc_config):
actor
for actor, npc_config in self.world.npcs_mapping.values()
}
def get_num_collision(self):
collision_sensor: CollisionSensor = self.world.collision_sensor
return len(collision_sensor.history)
class CarlaRunner:
def __init__(self,
carla_settings: CarlaConfig,
agent_settings: AgentConfig,
npc_agent_class,
competition_mode=False,
start_bbox: np.ndarray = np.array([5, -5, 0, 13, 5, 50]),
lap_count=10):
"""
Args:
carla_settings: CarlaConfig instance
agent_settings: AgentConfig instance
npc_agent_class: an agent class
competition_mode: [Optional] True/False
start_bbox: [Optional] array of [minx, miny, minz, maxx, maxy, maxz].
[5, -5, 0, 13, 5, 50] is the bbox for easy_map.
[-815, 20, -760, -770, 120, -600] is the bbox for berkeley_minor_map
lap_count: [Optional] total lap count
"""
self.carla_settings = carla_settings
self.agent_settings = agent_settings
self.carla_bridge = CarlaBridge()
self.npc_agent_class = npc_agent_class
self.world = None
self.client = None
self.controller = None
self.display = None
self.agent = None
self.npc_agents: Dict[npc_agent_class, Any] = {}
self.agent_collision_counter = 0
self.competition_mode = competition_mode
self.start_bbox = start_bbox
self.lap_count = lap_count
self.completed_lap_count = 0
self.sensor_data = SensorsData()
self.vehicle_state = Vehicle()
self.start_simulation_time: Optional[float] = None
self.start_vehicle_position: Optional[np.array] = None
self.end_simulation_time: Optional[float] = None
self.end_vehicle_position: Optional[np.array] = None
self.logger = logging.getLogger(__name__)
self.timestep_counter = 0
def set_carla_world(self) -> Vehicle:
"""
Initiating the vehicle with loading messages
Returns:
Vehicle Information
"""
try:
pygame.init()
pygame.font.init()
self.logger.debug(f"Connecting to {self.carla_settings.host}: "
f"{self.carla_settings.port}")
self.client = carla.Client(self.carla_settings.host,
self.carla_settings.port)
if not self.check_version(client=self.client):
self.logger.error(
f"Version Mismatch: Client = {self.client.get_client_version()}, "
f"Server = {self.client.get_server_version()}. \n"
f"HINT: Please change carla_version to either 0.9.9 or 0.9.10 "
f"in ROAR_Sim.configurations.carla_version.txt")
exit(1)
if self.carla_settings.should_visualize_with_pygame is True:
self.display = pygame.display.set_mode(
(self.carla_settings.width, self.carla_settings.height),
pygame.HWSURFACE | pygame.DOUBLEBUF)
self.logger.debug(f"Setting HUD")
hud = HUD(self.carla_settings.width, self.carla_settings.height)
self.logger.debug("Setting up world")
self.world = World(carla_world=self.client.get_world(),
hud=hud,
carla_settings=self.carla_settings,
agent_settings=self.agent_settings)
if self.carla_settings.should_spawn_npcs:
self.spawn_npcs()
self.logger.debug(f"Connecting to Keyboard controls")
self.controller = KeyboardControl(
world=self.world, carla_setting=self.carla_settings)
self.logger.debug("All settings done")
return self.carla_bridge. \
convert_vehicle_from_source_to_agent(self.world.player)
except Exception as e:
self.logger.error(
f"Unable to initiate the world due to error: {e}")
raise e
def start_game_loop(self,
agent,
use_manual_control=False,
starting_lap_count=0):
"""Start running the vehicle and stop when finished running
the track"""
self.agent = agent
lap_count = starting_lap_count
has_entered_bbox = False
should_restart_lap = False
try:
self.logger.debug("Initiating game")
self.agent.start_module_threads()
clock = pygame.time.Clock()
self.start_simulation_time = time.time()
self.start_vehicle_position = self.agent.vehicle.transform.location.to_array(
)
while True:
# make sure the program does not run above 60 frames per second
# this allow proper synchrony between server and client
clock.tick_busy_loop(60)
should_continue, carla_control = self.controller.parse_events(
client=self.client, world=self.world, clock=clock)
self.agent_collision_counter = self.get_num_collision()
if self.competition_mode:
is_currently_in_bbox = self.is_within_start_finish_bbox(
curr_pos=self.agent.vehicle.transform.location.
to_array())
if has_entered_bbox is True and is_currently_in_bbox is False:
has_entered_bbox = False
elif has_entered_bbox is False and is_currently_in_bbox is True:
has_entered_bbox = True
lap_count += 1
if lap_count > self.lap_count:
# if i have reached target number of lap counts, break out of game loop
break
else:
self.logger.info(
f"Going onto Lap {lap_count} out of {self.lap_count}"
)
if len(self.world.collision_sensor.history) > 0:
should_restart_lap = True
if should_restart_lap:
should_continue = False
# check for exiting condition
if should_continue is False:
break
self.world.tick(clock)
self.world.render(display=self.display)
if self.carla_settings.should_visualize_with_pygame is True:
pygame.display.flip()
self.fetch_data_async()
sensor_data, new_vehicle = self.sensor_data.copy(
), self.vehicle_state.copy()
if self.carla_settings.save_semantic_segmentation and self.world.semantic_segmentation_sensor_data:
Thread(target=lambda: self.world.
semantic_segmentation_sensor_data.save_to_disk(
(Path("./data/output_oct_10") / "ss" /
f"frame_{self.agent.time_counter}.png").
as_posix(), cc.CityScapesPalette),
args=()).start()
if self.carla_settings.should_spawn_npcs:
self.execute_npcs_step()
if self.agent_settings.enable_autopilot:
if self.agent is None:
raise Exception(
"In autopilot mode, but no agent is defined.")
agent_control = self.agent.run_step(
vehicle=new_vehicle, sensors_data=sensor_data)
if not use_manual_control:
carla_control = self.carla_bridge. \
convert_control_from_agent_to_source(agent_control)
self.world.player.apply_control(carla_control)
self.timestep_counter += 1
self.completed_lap_count = lap_count - 1
except Exception as e:
self.logger.error(f"Error happened, exiting safely. Error: {e}")
finally:
if self.competition_mode and should_restart_lap:
self.restart_on_lap(agent=agent,
use_manual_control=use_manual_control,
starting_lap_count=lap_count - 1)
else:
self.on_finish()
def restart_on_lap(self, agent, use_manual_control: bool,
starting_lap_count: int):
self.logger.info(f"Restarting on Lap {starting_lap_count}")
self.on_finish()
self.set_carla_world()
agent.__init__(vehicle=agent.vehicle,
agent_settings=agent.agent_settings)
self.start_game_loop(agent=agent,
use_manual_control=use_manual_control,
starting_lap_count=starting_lap_count)
def on_finish(self):
self.logger.debug("Ending Game")
if self.agent is not None:
self.agent.shutdown_module_threads()
self.end_vehicle_position = self.agent.vehicle.transform.location.to_array(
)
else:
self.end_vehicle_position = self.start_vehicle_position
if self.world is not None:
self.end_simulation_time = time.time()
self.world.destroy()
self.logger.debug("All actors are destroyed")
try:
pygame.quit()
except Exception as e:
self.logger.debug(
f"Cannot quit pygame normally, force quitting. Error: {e}")
self.logger.debug("Game ended")
def is_within_start_finish_bbox(self, curr_pos: np.ndarray) -> bool:
min_bounding_box = self.start_bbox[:3]
max_bounding_box = self.start_bbox[3:]
return all(
np.logical_and(min_bounding_box < curr_pos,
curr_pos < max_bounding_box))
def fetch_data_async(self):
t = Thread(target=self.convert_data, args=())
t.start()
def convert_data(self):
"""
Convert data from source to agent
Returns:
sensors_data: sensor data for agent
new_vehicle: the current player's vehicle state
"""
try:
self.sensor_data: SensorsData = \
self.carla_bridge.convert_sensor_data_from_source_to_agent(
{
"front_rgb": None if self.world.front_rgb_sensor_data is None
else self.world.front_rgb_sensor_data,
"rear_rgb": None if self.world.rear_rgb_sensor_data is None
else self.world.rear_rgb_sensor_data,
"front_depth":
None if self.world.front_depth_sensor_data is None else
self.world.front_depth_sensor_data,
"imu": self.world.imu_sensor
}
)
if self.world.player.is_alive:
self.vehicle_state = self.carla_bridge.convert_vehicle_from_source_to_agent(
self.world.player)
except Exception as e:
print("Error", e)
self.logger.error(e)
def execute_npcs_step(self):
# TODO this can be parallelized
try:
for agent, actor in self.npc_agents.items():
new_vehicle = self.carla_bridge.convert_vehicle_from_source_to_agent(
actor)
curr_control: VehicleControl = agent.run_step(
sensors_data=SensorsData(), vehicle=new_vehicle)
carla_control = self.carla_bridge.convert_control_from_agent_to_source(
curr_control)
actor.apply_control(carla_control)
except Exception as e:
self.logger.error(f"Failed to execute step for NPC. "
f"Error: {e}")
def spawn_npcs(self):
# parse npc file
npc_config_file_path = Path(self.carla_settings.npc_config_file_path)
assert npc_config_file_path.exists(
), f"NPC file path {npc_config_file_path.as_posix()} does not exist"
npc_configs = json.load(npc_config_file_path.open('r'))
npc_configs: List[AgentConfig] = [
AgentConfig.parse_obj(config) for config in npc_configs
]
self.world.spawn_npcs(npc_configs)
self.npc_agents = {
self.npc_agent_class(vehicle=actor, agent_settings=npc_config):
actor
for actor, npc_config in self.world.npcs_mapping.values()
}
def get_num_collision(self):
collision_sensor: CollisionSensor = self.world.collision_sensor
return len(collision_sensor.history)
def check_version(self, client):
return ("0.9.9" in client.get_server_version()) == (
"0.9.9" in client.get_client_version())
