Meltingpot Versions Save

Fixed

• Update setup.py to work with earlier setuptools (fixes broken 2.2.1 release).

Changed

• Do not allow orientation = None in Transform objects
• Improve documentation for territory__*.
• Improve scenario tags.
• Move puppeteers testutils to testing dir.
• remove restriction on chex
• Update setup.py to work with older versions of setuptools
• Add dev tools to setup.py
• Add pytest-xdist as a required plugin.
• Update pylintrc

Fixed

• Debug observations break hidden agenda #168
• Various lint errors

Removed

• Residual v1 file: reaction_graph_utils.py
• Remove stale documentation left over from 1.0.

Changed

• Make meltingpot pip installable.
• Support import meltingpot as an alias of import meltingpot.python.
• Raise minimum Python version to Python 3.10.
• Install assets as part of pip install .
• Update Dockerfile and dev tooling (pytest, pyink, pytype, pylint, isort).
• Update examples to work with v2.
• Update README.md with new installation details.
• Migrate from rx to reactivex.

Fixed

• Remove type annotation for dtype.
• Use correct roles in play_hidden_agenda.
• Fix noop that was causing a typing error.
• Add missing __init__.py files.
• Set the default orientation to NORTH for objects that have no orientation defined.

Added

• Evaluation utilities.

Changed

• Added COLLECTIVE_RETURN to PERMITTED_OBSERVATIONS.
• Split install.sh into three scripts.
• Move from yapf to black.
• Remove debug observations to speed up environment stepping.

Fixed

• Add Lua 5.2 compatibility for unpack.

Removed

• SubstrateWrappers previously needed for the v1 bots.

Added

• Colab for visualizing evaluation results.
• Tests for the examples.
• Mocks of specific substrates and scenarios, for use in testing.
• Helper for setting world.rgb spec.

Changed

• Improve debugging information in SavedModelPolicy.
• Resample bots at the beginning of scenario episodes.

Fixed

• Initialize Transform before any other component (#84, #24).

Added

• New substrate "Hidden Agenda" and its scenarios.

Melting Pot Version 2.0.0 release. See Melting Pot 2.0 Tech Report for detailed information on the new substrates, bots, and scenarios.

Changed

• Removed all v1 scenarios, bots, and substrates and replaced with new versions.
• Scenarios now support heterogenous roles, which must be specified at build time.
• Various improvements to examples and their documentation.

Added

• New puppeteers and policies to implement new bots.
• New utils to handle sprites, colors, and maps.
• Mocks for use in testing.

Changed

• Drop support for Python 3.7 and 3.8.
• Store saved models on Google Cloud Platform rather than in the Git repo.
• x2 speed improvement to some substrates
• Improved install.sh script and installation documentation.
• Various improvements to examples and their documentation.

Fixed

• Puppets were sharing state in Scenarios. #70
• Various issues with RLlib examples.

Added

• .devcontainer for the project.
• pettingzoo example.
• TF1-compatible version of SavedModelPolicy.

Changed

• Define is_focal is in scenario configs.
• Use chex.dataclass for dm-tree compatibility.

Fixed

• Use correct is_focal settings for team-vs-team games #16.

Added

• Substrates and Scenarios now have ReactiveX observables.

Changed

• Don't add INVENTORY observation to scenarios that don't use it.
• Various updates to RLlib example.
• Improved performance of the component system for environments.

Fixed

• Simulation Speed #7
• Horizon setting in examples #9
• Error running example "self_play_train.py" #10
• build lab2d on m1 chip #13

Full Changelog: https://github.com/deepmind/meltingpot/commits/v1.0.2

Initial release.

Full Changelog: https://github.com/deepmind/meltingpot/commits/v1.0.0