Error when running game only among bots

[alexander3605]

Hello
For a project that I am working on, I am trying to execute the simulator without any learning agent but only among bots.
I am using this command to run the game:

alessandroserena@alessandroserena-VirtualBox:~/Desktop/football$ MESA_GL_VERSION_OVERRIDE=3.2 MESA_GLSL_VERSION_OVERRIDE=150 python3 -m gfootball.play_game --home_players=bot --away_players=bot

The rendered window starts and as soon as the kick-off is done the game crashes with the following error:

/home/alessandroserena/.local/lib/python3.6/site-packages/google/protobuf/__init__.py:37: UserWarning: Module gfootball_engine was already imported from /home/alessandroserena/.local/lib/python3.6/site-packages/gfootball_engine/__init__.py, but /home/alessandroserena/Desktop/football is being added to sys.path
  __import__('pkg_resources').declare_namespace(__name__)
Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/alessandroserena/Desktop/football/gfootball/play_game.py", line 64, in <module>
    app.run(main)
  File "/home/alessandroserena/.local/lib/python3.6/site-packages/absl/app.py", line 300, in run
    _run_main(main, args)
  File "/home/alessandroserena/.local/lib/python3.6/site-packages/absl/app.py", line 251, in _run_main
    sys.exit(main(argv))
  File "/home/alessandroserena/Desktop/football/gfootball/play_game.py", line 55, in main
    _, _, done, _ = env.step(None)
  File "/home/alessandroserena/Desktop/football/gfootball/env/football_env.py", line 139, in step
    observation, reward, done = self._env.step(self._get_actions())
  File "/home/alessandroserena/Desktop/football/gfootball/env/football_env.py", line 129, in _get_actions
    adopted_obs = self._convert_observations(obs, False, i)
  File "/home/alessandroserena/Desktop/football/gfootball/env/football_env.py", line 117, in _convert_observations
    observations = observation_rotation.flip_observation(observations)
TypeError: flip_observation() missing 1 required positional argument: 'config'

Can someone please help me fix this error, or otherwise show me how to run a simulation between players that can play a "realistic" game?

Thanks a lot for creating this package
alexander3605

[michalzajac-ml]

Thanks for creating this issue!
This is a bug and a fix will be released soon.
In the meantime, to make it work just change this line: https://github.com/google-research/football/blob/master/gfootball/env/football_env.py#L117 from observations = observation_rotation.flip_observation(observations) to observations = observation_rotation.flip_observation(observations, self._config).
Alternatively (even without changes in code), you can run:
MESA_GL_VERSION_OVERRIDE=3.2 MESA_GLSL_VERSION_OVERRIDE=150 python3 -m gfootball.play_game --home_players= --away_players=. This will run two built-in AIs, while your original command runs two bots defined here: https://github.com/google-research/football/blob/master/gfootball/env/players/bot.py .

[kkurach]

Closing the issue, @alexander3605 - please re-open if this didn't solve your problem.

[alexander3605]

Hi @zajaczajac
Thank you for the reply, that worked.

Now, I am trying to extract some information about the players, specifically the sticky_actions.
If I run the command you suggested above MESA_GL_VERSION_OVERRIDE=3.2 MESA_GLSL_VERSION_OVERRIDE=150 python3 -m gfootball.play_game --home_players= --away_players= the game works but no information about the players actions is exposed (not even internally in the source code, from what I can see) since there is no active player in any team.

How can I specify the built-in AI in the --home_team= and --away_team= arguments when I run the game?

[alexander3605]

I opened a new issue since I cannot reopen this one.