Exception after running the example from the documentation

[OlgerSiebinga]

When I run the example from the quick start page in the documentation, an exception occurs.

The command:
python main.py rrt maps/room1.png

The exception:

Traceback (most recent call last):
  File "main.py", line 287, in <module>
    environment.run()
  File "C:\Users\Olger\PycharmProjects\sbp-env\env.py", line 198, in run
    self.visualiser.terminates_hook()
  File "C:\Users\Olger\PycharmProjects\sbp-env\visualiser.py", line 148, in terminates_hook
    self.env_instance.sampler.visualiser.terminates_hook()
  File "C:\Users\Olger\PycharmProjects\sbp-env\env.py", line 126, in __getattr__
    return object.__getattribute__(self.visualiser, attr)
AttributeError: 'PygameEnvVisualiser' object has no attribute 'sampler'

The exception only occurs after the simulation has finished so it seems like a minor problem. Although I'm not really sure what happens at env.py, line 126, in __getattr__ and why. So, I don't have a proposed fix.

[OlgerSiebinga]

openjournals/joss-reviews#3782

[soraxas]

Thanks @OlgerSiebinga for reporting this! It should be addressed in the latest commit