A Pokémon battle simulation engine

Warning This project is under heavy development and currently the main branch contains numerous breaking changes which may not work and which are not fully documented. Please wait for the forthcoming initial v0.1 release before depending on this project (code from the old tag can also be used to experiment with a more stable version of the codebase). A minimal, complete, Pokémon battle simulation engine optimized for performance and designed for tooling, embedded systems, and artificial intelligence use cases. This engine aims to be a frame-accurate and bug-for-bug compatible implementation of both Pokémon battles as defined by the original game code and the Pokémon Showdown1 simulator which represents Pokémon battling as practically interpreted online. The pkmn engine is more than 1000× faster than the patched Pokémon Showdown simulator code when playing out supported formats in compatibility mode and is extensively tested and documented. Note, however, that the engine is not ... Read full article.