I have recently been working on monetizing my game. One of the ways which I have decided to do this is though the use of gamepasses. Since this my first time actually working with gamepasses, I have concluded I must be doing something wrong.
The Problem: I have set MarketplaceService.ProcessReceipt to a callback function, however, when a gamepass is purchased, the callback is not being called.
Here is the relevant code (from a ModuleScript called GamepassService in ServerScriptService - yes, I know GamePassService is a thing, but has nothing to do with this):
local MarketplaceService = game:GetService("MarketplaceService")
local Service = {}
-- Table of Gamepass Name : Gamepass ID
local Gamepasses = {
["Hotair Balloon"] = 123456, -- obviously I have the real gamepass IDs here
["Ferris Wheel" ] = 123457,
["Zipline" ] = 123458
}
-- Table that stores which gamepasses a player has under their UserId
local PlayerGamepasses = {}
-- Loads player's gamepasses
-- This function works
function Service.LoadPlayer(player)
{
local gamepasses = {}
for name, id in pairs(Gamepasses) do
if MarketplaceService:UserOwnsGamePassAsync(player.UserId, id) then
table.insert(gamepasses, name)
end
end
PlayerGamepasses[player.UserId] = gamepasses
}
-- Checks whether the player has the gamepass (specified by name)
-- This function works
function Service.HasGamepass(player, gamepass)
-- ~= nil makes it return a boolean instead of an index if the gamepass is found
return table.find(PlayerGamepasses[player.UserId], gamepass) ~= nil
end
-- Isn't being called
Marketplace.ProcessReceipt = function(receipt)
prints("Running ProcessReceipt...") -- never prints
print(receipt.ProductId) -- never prints
local gamepass
for name, id in pairs(Gamepasses) do
if receipt.ProductId == id then
gamepass = name
break
end
end
if gamepass then
table.insert(PlayerGamepasses[receipt.PlayerId], gamepass)
print("Added gamepass: " .. gamepass)
return Enum.ProductPurchaseDecision.PurchaseGranted
end
end
return Service
For some reason after I purchased gamepasses in studio, the ProcessReceipt callback was not being called. I know this from the fact that nothing was being printed. I have checked all scripts in game to check ProcessReceipt is not being reset to something else (using Ctrl + Shift + f), and it isn’t being set anywhere else. I have also tried added a wait(5) before I set the callback in case any other script is doing it (despite not being able to find where it says so), however this didn’t do anything either. I wasn’t sure if it was just in studio, so I published the place and tested it in the real game (ending up in myself wasting a large portion of my robux - yes I should have made the gamepasses 1R$ each before hand, but I didn’t think of it). In the real game, the same thing happened: ProcessReceipt was not being called.
Just to test that this wasn’t a game-specific bug, I opened up a new Baseplate in Studio and created a gamepass for it. In the Baseplate place, the ProcessReceipt callback was not called either. Please could someone tell me if I am doing something wrong? I have searched on the forums and the docs already, but haven’t found anything useful.
Many thanks
