Code strategy for adding virtual currency from IAP on Unity with PlayFab

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moonbasedesign asked Aug 28, '23

Code strategy for adding virtual currency from IAP on Unity with PlayFab

We've got a Unity IOS/Android project using the PlayFab Legacy economy.

I'm looking for a strategy for adding virtual currency from IAP purchases. It appears that the AddUserVirtualCurrency() end point is vulnerable to hacking if it appears in client code. So far I'm calling ValidateIOSReceipt in the ProcessPurchase function of the Unity IAP Flow.

I want to use a data driven approach so I intend to put a "Payload" value into the PlayFab.CustomData field in my IAP items. I will parse this to add specific values to a player's virtual currency account.

Should I be calling a cloudscript from the OnSuccess block of the Validate Receipt function?

Thanks

In-Game Economy

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Answer 1 · 2023-08-28T10:09:04Z

Infer Wang answered Aug 28, '23

You can use the (game manager->Economy-> Catalogs (Legacy)->Bundles), add the Virtual Currency and its quantity to the Bundles Contents, set the consumable by time. The users can use ValidateIOSReceipt to purchase bundles instead, after that, the virtual currency in the bundle will go to the users' inventory automatically. In this way, you don't need to use the cloudscript and custom data in the item.

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moonbasedesign commented · Aug 29 at 02:22 AM

Nice solution. I just tried it and it worked nicely.

Is this entirely server-side? That is, safe from client hacking?

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Infer Wang moonbasedesign commented · Aug 30 at 01:51 AM

The purchase part is client side, bundle releasing content to inventory is server side. So, it's relatively safe from client hacking.

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