Unity ML Agents

Download

Download the latest release from this Github page

unzip

unzip it to C:\Users\YOUR USERNAME\  (Windows)

For Linux and Mac save unzip it to 'home' directory

now you will have a folder there called: ml-agents-release_20

1. Install Anaconda but don't add it to PATH
2. Install Python and add to PATH during the installation.

Anaconda itself is a Python distribution, but it is not recommended to add it to path. We install Python after our Anaconda installation so that python commands can be executed systemwide, but conda commands only when using conda shell, to prevent any interference with other applications using Python.

create conda environment

conda create -n ml-agents python=3.8

activate conda environment

conda activate ml-agents

install pytorch

install Unity ML Agents:

cd ml-agents-release_20/ml-agents-release_20

pip3 install -e ./ml-agents-envs

pip3 install -e ./ml-agents

Downgrade protobuf and install onnx module

pip install protobuf==3.20

pip install onnx

Create a new unity 3D project with an editor version later than 2020 here I use 2021.03.15f1

Under "Location" choose the ml-agents-release-20 folder that you have in your home directory. 

in the newly created Unityproject Install the ML Agents Unitypackage:

Go to window -> package manager -> + -> install from disk

navigate to C:/Users/ml-agents-release-20/ml-agents-release-20/com.unit.ml-agents and click on the package.json

Copy the ml agents assets to your unity project

in your file system navigate to

C:\Users\YOUR_USERNAME\ml-agents-release_20\ml-agents-release_20\Project\Assets

find the folder ML-Agents 📁 and drag it into your newly created and open unity project into the 'Assets' window.

activate the conda environment

conda activate ml-agents

start the training with conda shell

cd ml-agents-release_20/ml-agents-release_20

mlagents-learn config/ppo/Walker.yaml --run-id=walker-001

humanoid character *.fbx 

script for copying rotation and location:

using UnityEngine;

public class FollowObject : MonoBehaviour
{
    public GameObject objectToFollow;
    public Vector3 offset;
    public bool copyPosition = true;
    public bool copyRotation = true;

    private void Update()
    {
        if (copyPosition)
        {
            transform.position = objectToFollow.transform.position + offset;
        }

        if (copyRotation)
        {
            transform.rotation = objectToFollow.transform.rotation;
        }
    }
}