Game replay is managed by the framework. You do not need to do anything special about it in your code, except taking care of updating the client interface through the framework notification system (and not for example, by using the callback function of an ajaxcall).
The game replay works like this:
- The static files for the game at the time of the game start are archived
- All notifications sent to the browser are added to the archive
- When replaying, the static files are loaded in the browser, then notifications are sent back to replay the game moves.
So in essence, the replay works like an exact recording.
NB: the game replay feature is now available on the studio (since December 2020). Please note that there may be a delay before the replay becomes available.