def __init__()

in gym/gym/envs/box2d/car_dynamics.py [0:0]

• 58 lines of code
• 8 McCabe index (conditional complexity)

    def __init__(self, world, init_angle, init_x, init_y):
        self.world = world
        self.hull = self.world.CreateDynamicBody(
            position = (init_x, init_y),
            angle = init_angle,
            fixtures = [
                fixtureDef(shape = polygonShape(vertices=[ (x*SIZE,y*SIZE) for x,y in HULL_POLY1 ]), density=1.0),
                fixtureDef(shape = polygonShape(vertices=[ (x*SIZE,y*SIZE) for x,y in HULL_POLY2 ]), density=1.0),
                fixtureDef(shape = polygonShape(vertices=[ (x*SIZE,y*SIZE) for x,y in HULL_POLY3 ]), density=1.0),
                fixtureDef(shape = polygonShape(vertices=[ (x*SIZE,y*SIZE) for x,y in HULL_POLY4 ]), density=1.0)
                ]
            )
        self.hull.color = (0.8,0.0,0.0)
        self.wheels = []
        self.fuel_spent = 0.0
        WHEEL_POLY = [
            (-WHEEL_W,+WHEEL_R), (+WHEEL_W,+WHEEL_R),
            (+WHEEL_W,-WHEEL_R), (-WHEEL_W,-WHEEL_R)
            ]
        for wx,wy in WHEELPOS:
            front_k = 1.0 if wy > 0 else 1.0
            w = self.world.CreateDynamicBody(
                position = (init_x+wx*SIZE, init_y+wy*SIZE),
                angle = init_angle,
                fixtures = fixtureDef(
                    shape=polygonShape(vertices=[ (x*front_k*SIZE,y*front_k*SIZE) for x,y in WHEEL_POLY ]),
                    density=0.1,
                    categoryBits=0x0020,
                    maskBits=0x001,
                    restitution=0.0)
                    )
            w.wheel_rad = front_k*WHEEL_R*SIZE
            w.color = WHEEL_COLOR
            w.gas   = 0.0
            w.brake = 0.0
            w.steer = 0.0
            w.phase = 0.0  # wheel angle
            w.omega = 0.0  # angular velocity
            w.skid_start = None
            w.skid_particle = None
            rjd = revoluteJointDef(
                bodyA=self.hull,
                bodyB=w,
                localAnchorA=(wx*SIZE,wy*SIZE),
                localAnchorB=(0,0),
                enableMotor=True,
                enableLimit=True,
                maxMotorTorque=180*900*SIZE*SIZE,
                motorSpeed = 0,
                lowerAngle = -0.4,
                upperAngle = +0.4,
                )
            w.joint = self.world.CreateJoint(rjd)
            w.tiles = set()
            w.userData = w
            self.wheels.append(w)
        self.drawlist =  self.wheels + [self.hull]
        self.particles = []