Pettingzoo wrapper changed to gymnasium interface #6211
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- added dependency to gymnasium instead of gym - adjusted Unity gym interface to return `truncated` on step - adjusted Unity gym interface to accept `seed` and `options` on reset (not used) - adjusted Unity gym interface to not accept `mode` on reset (not used anyway) - relaxed dependencies to numpy, pettingzoo and Python version
…(without publishing)
Local poetry support
…t returning obs and info; step returning terminated and truncated instead of done)
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alexander-zap
changed the title
added 3 commits
June 13, 2025 21:20
…t returning obs and info; step returning terminated and truncated instead of done)
- all agents return an observations synchronously (instead of having steps where only one agent returns an observation) - in case the agent sends a TerminationStep *and* a DecisionStep after, the reward from the termination step should be taken (but for observations it's the other way around because of SB3 convention) - `agents` attribute should store agents even if they have *just* finished (they should be removed the step after) - fixed a bug where a continuous action vector was assigned len(action) * action[0] - fixed double removal of an agent from _live_agents for ParallelEnv
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Should also solve #6214 |
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Proposed change(s)
I adjusted the Unity Pettingzoo Wrapper to support the gymnasium interface (gymnasium>=0.25).
This includes:
terminated, truncatedon stepinfoon resetseedandoptionson resetmodeon renderAdditionall, I fixed interface problems with pettingzoo implementation:
agentsattribute should store agents even if they have just finished (they should be removed the step after)Also I bumped the dependencies for pettingzoo to 1.22.0 (because this is there Gymnasium support started on their side).
Useful links (Github issues, JIRA tickets, ML-Agents forum threads etc.)
This also could be helpful for: #5890
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