def __init__(self, start, end, cars=[], speed_limit=220, height=20):
''' Initialize the road values, with the 'start' and 'end' params
being the intersectiosn on either end of the road '''
Edge.__init__(self, start, end)
self.cars = list(cars)
self.speed_limit = speed_limit
self.can_change_cars = Lock()
self.length = math.sqrt((end.y - start.y)**2 +
(end.x - start.x)**2) - height
delta_x = end.x - start.x
delta_y = end.y - start.y
# set the road angle for the pygame sprite
if delta_x == 0.0:
if delta_y < 0:
self.angle = 270.0
else:
self.angle = 90.0
else:
self.angle = math.atan(delta_y / delta_x) * 180.0 / math.pi
if delta_x < 0.0 and delta_y >= 0.0:
self.angle = 180.0 + self.angle
if delta_x < 0 and delta_y < 0:
self.angle = 180 + self.angle
