An IMP environment is implemented as a class and includes two main methods: (i) reset and (ii) step. This is already provided in the interface class, imp_env.

These methods are included by default because the wrappers that will integrate your IMP environment with typical MARL ecosystems needs their definition.

Additionally, you can include any other relevant methods in your environment.

To create a new IMP environment NewEnv, inherit imp_env:

from imp_env.imp_env import ImpEnv 

class NewEnv(ImpEnv):

Feel free to follow this tutorial, where the steps to create an environment are explained in a simple exercise.

You can also check the guidelines for generating and storing your own transition model.