Feature Request: add pettingzoo requirement & upgrade to latest version

[elliottower]

Hi, I just wanted to say this is an awesome project and I'm excited to try it out.

I installed via the instructions but it doesn't install pettingzoo, even though there are examples using it. Obviously users can just install it themselves but I think it should probably be listed as an extra. As a note, there is a new release upcoming in the next few weeks so it could wait until that, or just list pettingzoo>=1.22.4 (most recent version).

If you need any help working out kinks due to different versions feel free to ask, there were some breaking changes in the past 6 months or so, so if you previously used an older version like 1.15.0 it requires a bit of updates to fix. The previous API returned done in the step() function, whereas the new one returns truncated and terminated (matching gymnasium). There is a migration guide for gymnasium explaining the changes further, the steps should be basically the same (we're working on making resources for updating old PettingZoo repositories as well): https://gymnasium.farama.org/content/migration-guide/

[benellis3]

Hi. Thanks very much for raising an issue! I'm not sure about the current status of pettingzoo support. I will carve out a day and try to get it working though. I don't think it should be too tricky given the current framework.

Thanks for the tips I'll let you know how I get on 😄 .

[elliottower]

Hi. Thanks very much for raising an issue! I'm not sure about the current status of pettingzoo support. I will carve out a day and try to get it working though. I don't think it should be too tricky given the current framework.

Thanks for the tips I'll let you know how I get on 😄 .

Great to hear, thanks! Excited to test it out once you are able to get it working.