Action Type Basics
| Action Type | Type | Value | Description |
|---|---|---|---|
| Discard | 1 | int | |
| Chii (Eat) | 2 | int | |
| Pon (Meld) | 3 | int | |
| Ankan (Concealed Kong) | 4 | int | |
| Daimingkan (Melded Kong) | 5 | int | |
| Kakan (Supplemental Kong) | 6 | int | |
| Riichi (Declare Ready) | 7 | int | |
| Tsumo (Self-Draw Win) | 8 | int | |
| Ron (Win by Discard) | 9 | int | |
| Nine Terminal Tiles | 10 | int | |
| Cancel, Skip | 321 | int |