dump / restore game state to / from json.

This is a feature request

It would be nice to see a simple api to dump game state to json and restore it. Something like

let json = game.dump()
game.restore(json)

This could be used to save games in a database or create save/restore points.

[brozeph]

@Piterden - thank you for sharing! It looks like you’re saving each move into a table and then restoring the board by re-applying each move individually. This is effectively what I did in the stdlib implementation.

An alternative, I recently noticed, which I forgot about in my original reply on this issue thread, that there is a way to load a game from a move history: https://github.com/brozeph/node-chess/blob/master/src/game.js#L86. One possibility might be to serialize the move history as JSON (JSON.stringify(gameClient.game.moveHistory)) and then use that when creating a game subsequently for reload… if this sounds interesting or worthwhile, I could implement a load method from the game clients that does just this (as an alternative to the create method).

[brozeph]

Should we keep this issue open, or does the FEN load address this need?