How to input actions - legokor/reinforcement_learning GitHub Wiki
The controller has 8 or 12 buttons. You can switch between them in the game's menu, but unless specifically mentioned, we'll be using the 8 button one.
The env.step() function's input is a 121 digit binary number as a String.
Each bit represents a state of an action button. Mapped below:
| Button | Decimal | Action |
|---|---|---|
| MODE | 512 | - |
| START | 256 | Block 2 |
| UP | 128 | Jump |
| DOWN | 64 | Squat |
| LEFT | 32 | Move Left |
| RIGHT | 16 | Move Right |
| B | 2048 | Low Kick |
| A | 1024 | Punch |
| C | 8 | High Kick |
| Y | 4 | - |
| X | 2 | - |
| Z | 1 | - |
You can press and/or hold multiple buttons at once.
For instance you could pass the env.step function this f'{128|2048:012b}' which would mean '100010000000', causing kicking while jumping.
1: Controlling both players at once requires a 12+12 digit binary number as a String, where the first 12 bit represents the first player's actions while the second 12 bit represents the second player's actions. For example f'{128|2048:012b}'+f'{128|2048:012b}', which would mean '100010000000100010000000', causing both players jumping.
2: The START button is filtered by the environment, to be able to use it, set the env variable's use_restricted_actions attribute's value to retro.Actions.ALL.