Serialize all save slots and deserialize them without loading a specific slot

[sizhongbin]

Is your feature request related to a problem?
I'm working on a game with cloud save feature based on Supabase database. The process in my plan should be like:
:: Start
User login with useid and password. If successd, goto :: LoadGame

:: LoadGame

1. User select one of the three save slots and load it from localStorage. Or, upload/download all the three save slots to/from database.

• Load from localStorage: Save.slots.load(slot)
• Upload: Serialize all the 3 slots as a JSON string like: {"slot0":"Slot 0 Serialized String","slot1":"Slot 1 Serialized String","slot2":"Slot 2 Serialized String"}, and INSERT/UPDATE the JSON to database with userid.
• Download: SELECT the JSON by userid from database and deserialize all the 3 slots. Cover the current localStorage. Then goto :: LoadGame again. Now user can select one of the three save slots that just downloaded and deserialized to localStorage.

The problem is that serialize/deserialize feature only works on the current slot. And a load will be immediately processed after deserialize.

Describe the solution you'd like.
Save.serializeAll(): Return a JSON string like: {"slot0":"Slot 0 Serialized String","slot1":"Slot 1 Serialized String","slot2":"Slot 2 Serialized String"}
Save.deserializeAll(string): Deserializes the given save string created via Save.serializeAll() and cover the current localStorage.

Describe alternatives you've considered.
Maybe some other solutions using the current Serialization API?

Additional context.
Nope.

[tmedwards]

Unless I'm mistaken, this is already part of v2.37.0.

[sizhongbin]

Unless I'm mistaken, this is already part of v2.37.0.

Thanks for quick reply.
I've checked the 2.37.0 document. Looks like the serialize
ion API is replaced by base64. But I cannot find any difference except the Promise return. I'm still only able to encode the current save slot or load it immediately. I cannot encode/decode ALL the slots. Did I miss something?

[tmedwards]

Yes. Check out the documentation on Save.browser.export() and Save.browser.import().

[sizhongbin]

Yes. Check out the documentation on Save.browser.export() and Save.browser.import().

Oh i figured out. Yes the import/export can backup/restore all the slots to/from a save file. But unfortunately, what i need is a JSON string so that i can SELECT/INSERT/UPDATE it in postgresSQL easily.

I guess I should create my own save/load function instead of using the brower save API, so that I can set/get the JSON string I want to/from localStorage and do something before loading.

[tmedwards]

I suppose I could add .exportToBase64() and .importFromBase64() methods or something similar.

[tmedwards]

Made some changes:

• Moved Save.browser.export() and Save.browser.import() to Save.disk.export() and Save.disk.import().
• Added Save.base64.export() and Save.base64.import().

The latter two are what you should need.

[sizhongbin]

Great! Thanks a lot. I'll try it soon.