Using Data files

ArtLeeApps · July 2013

Hi all,

Im using the handy "dataSaver.loadValue".
which works a treat.

In Main, i check for it, and use/create the data within. (the code would look familiar

)

eg.

sets = dataSaver.loadValue("sets")
 
-- if sets not defined (first time)
-- set defaults
if(not sets) then
	sets = {}
	sets.sounds = true
	sets.music = true
	sets.curLevel = 1
	sets.levelUnLocks = {}
	sets.levelUnLocks[1] = 1
	sets.advertising = true
	dataSaver.saveValue("sets", sets)
end

My question is.
- Is it "OK" to open this file ONCE in Main.
- In other scenes, update "sets" and saveValue as needed.
- But never loadValue during the rest of the app ?

Its more of a "tiny" thing, as i do tend to loadValue in other places, when i dont think in need to. as the "sets" is a global.

ar2rsawseen · July 2013

@ArtLeeApps if I understand you correctly it is totally ok.
So first you load the values, so both file and table have same values, then during the game you keep updating table, and you can from time to time sync it with file by calling save value, or even set it up to be saved on App life cycle events.

And thats basically all you have to do, there is no need to reload data from file in the same app session, because you will already have updated information in table, since that is what you are updating.

ArtLeeApps · July 2013

@ar2rsawseen excellent, thank you.

Thats going to make things a bit neater. B-)

Scouser · July 2013

@ArtLeeApps, This is exactly as I use it. Load settings once and only save when something is changed (usually from my options screen).

ArtLeeApps · July 2013

I tidied up my app last night, did a find in files for datasaver , now it only loads once in main, and checks each value exists, if not its defaulted. Then during the game, it only saves when a setting is changed, a new highscore is achieved, stars are bought from google or earned, ad removal is bought and unlocked, levels unlocked, etc.

So much better. Thanks all :-)

Scouser · July 2013

Should you not be checking for ad removal etc. via Google IAP?

If somebody edits your settings file could they change the ad removal flag or number of stars bought and play for free?

ArtLeeApps · July 2013

@Scouser good point !

- so for the one off purchase of ad free currently thats a managed purchase. i could check it when i load the game and use that as a global.

- but what about the "stars", as currently they are unmanaged, the user could by 10 as one product, but use them in the game, and buy more... how would i secure that from tampering, i currently just update the data on the phone, after a purchase.

Would you know the code for reading Google Play for purchases please, as per the managed once off record...

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