Part 3: Resetting Game Episodes

Resetting Your Environment

To alter the environment at the start of each episode, add your method that handles resetting the environment (e.g. EnvironmentReset()) to Academy's OnEnvironmentReset Action. You might want to reset an agent to its starting position or move a goal to a random position, for example:

using Unity.MLAgents;
public class MySceneBehavior : MonoBehaviour {
    public void Awake() {
        Academy.Instance.OnEnvironmentReset +=
            EnvironmentReset; }

    void EnvironmentReset() {
        // Reset the scene here
        // Reset the Agent to its starting position
        // Move a goal to a random position } }

NOTE:

When you reset an environment, consider the factors that should change so that training is generalizable to different conditions. For example, if you were training a maze-solving agent, you would probably want to change the maze itself for each training episode. Otherwise, the agent would probably learn to solve one particular maze, not mazes in general.