Can I change the shape of landmarks

[AmulyaReddy99]

I am trying to make few landmarks as stationary lines and few as rectangular blocks. I could change render() function to get either everything as square or circle by editing line 231 of environment.py as below. But this can either be circle or rectangle. Can I have a combination of both.

                if block:
                    geom = rendering.make_polygon(v)
                else:
                    geom = rendering.make_circle(entity.size)