def update(self):
"""
Updates the roundabout : rotate the cars, dispatch them...
"""
#self.incoming_roads = sorted(self.incoming_roads, compa)
# Make the cars rotate
if lib.clock() - self.last_shift > ROUNDABOUT_ROTATION_RATE:
self.last_shift = lib.clock()
self.slots_roads = lib.shift_list(self.slots_roads)
# Spawning mode
if self.spawning and len(self.leaving_roads) and (
lib.clock() - self.spawn_timer > self.spawn_time):
self.spawn_timer = lib.clock()
num_possible_roads = len(self.leaving_roads)
# Possible ways out. NB : the "1000/ " thing ensures *integer* probabilities.
possible_roads_events = [(self.leaving_roads[i],
1000 / num_possible_roads)
for i in range(num_possible_roads)]
chosen_road = lib.proba_poll(possible_roads_events)
if chosen_road.is_free:
car_type_events = [(STANDARD_CAR, 80), (TRUCK, 15),
(SPEED_CAR, 5)]
new_car = __car__.Car(chosen_road.get_free_lane(),
lib.proba_poll(car_type_events))
# Update traffic lights
self._update_traffic_lights()
# Update cars
for car in self.cars:
self.update_car(car)
# Kill cars that have reached their destination
for car in self.to_kill:
car_slot = lib.find_key(self.slots_cars, car)
self.slots_cars[car_slot] = None
car.die()
self.to_kill = []
def update(self):
"""
Updates the roundabout : rotate the cars, dispatch them...
"""
#self.incoming_roads = sorted(self.incoming_roads, compa)
# Make the cars rotate
if lib.clock() - self.last_shift > ROUNDABOUT_ROTATION_RATE:
self.last_shift = lib.clock()
self.slots_roads = lib.shift_list(self.slots_roads)
# Spawning mode
if self.spawning and len(self.leaving_roads) and (lib.clock() - self.spawn_timer > self.spawn_time):
self.spawn_timer = lib.clock()
num_possible_roads = len(self.leaving_roads)
# Possible ways out. NB : the "1000/ " thing ensures *integer* probabilities.
possible_roads_events = [(self.leaving_roads[i], 1000/num_possible_roads) for i in range(num_possible_roads)]
chosen_road = lib.proba_poll(possible_roads_events)
if chosen_road.is_free:
car_type_events = [(STANDARD_CAR, 80),
(TRUCK , 15),
(SPEED_CAR , 5)]
new_car = __car__.Car(chosen_road.get_free_lane(), lib.proba_poll(car_type_events))
# Update traffic lights
self._update_traffic_lights()
# Update cars
for car in self.cars:
self.update_car(car)
# Kill cars that have reached their destination
for car in self.to_kill:
car_slot = lib.find_key(self.slots_cars, car)
self.slots_cars[car_slot] = None
car.die()
self.to_kill = []
def __init__(self,
new_location,
new_type=STANDARD_CAR,
new_length_covered=0):
"""
Constructor method.
"""
# Check the vehicle type
if new_type not in VEHICLE_TYPES:
raise Exception(
'ERROR (in car.__init__()) : unknown type of vehicle !')
# Initialization of the parameters
self.path = []
self.is_waiting = False
self.width = VEHICLE[new_type][DEFAULT_WIDTH]
self.speed = VEHICLE[new_type][DEFAULT_SPEED]
self.headway = VEHICLE[new_type][DEFAULT_HEADWAY]
self.length = VEHICLE[new_type][DEFAULT_LENGTH]
self.force = VEHICLE[new_type][DEFAULT_FORCE]
self.mass = VEHICLE[new_type][DEFAULT_MASS]
self.color = VEHICLE[new_type][DEFAULT_COLOR]
self.acceleration = 0
self.sight_distance = 5 * VEHICLE[STANDARD_CAR][DEFAULT_LENGTH]
self.total_waiting_time = 0
self.last_waiting_time = 0
self.dead = False
# Several sub-categories : truck, long truck, bus
if new_type == TRUCK:
possible_sizes = [(2, 25), (3, 60), (4, 15)]
self.length *= lib.proba_poll(possible_sizes)
self.mass *= self.length
# Cars must be created on a lane
if isinstance(new_location, __road__.Lane):
self.location = new_location
self.location.cars.insert(0, self)
self.length_covered = new_length_covered
else:
raise ValueError(
'ERROR (in car.__init__()) : new cars must be created on a lane !'
)
self.generate_path()
def __init__(self, new_location, new_type = STANDARD_CAR, new_length_covered = 0):
"""
Constructor method.
"""
# Check the vehicle type
if new_type not in VEHICLE_TYPES:
raise Exception('ERROR (in car.__init__()) : unknown type of vehicle !')
# Initialization of the parameters
self.path = []
self.is_waiting = False
self.width = VEHICLE[new_type][DEFAULT_WIDTH]
self.speed = VEHICLE[new_type][DEFAULT_SPEED]
self.headway = VEHICLE[new_type][DEFAULT_HEADWAY]
self.length = VEHICLE[new_type][DEFAULT_LENGTH]
self.force = VEHICLE[new_type][DEFAULT_FORCE]
self.mass = VEHICLE[new_type][DEFAULT_MASS]
self.color = VEHICLE[new_type][DEFAULT_COLOR]
self.acceleration = 0
self.sight_distance = 5 * VEHICLE[STANDARD_CAR][DEFAULT_LENGTH]
self.total_waiting_time = 0
self.last_waiting_time = 0
self.dead = False
# Several sub-categories : truck, long truck, bus
if new_type == TRUCK:
possible_sizes = [(2, 25),
(3, 60),
(4, 15)]
self.length *= lib.proba_poll(possible_sizes)
self.mass *= self.length
# Cars must be created on a lane
if isinstance(new_location, __road__.Lane):
self.location = new_location
self.location.cars.insert(0, self)
self.length_covered = new_length_covered
else:
raise ValueError('ERROR (in car.__init__()) : new cars must be created on a lane !')
self.generate_path()
