In-Game Currency, Developer Products. Please Help?
In my game, I have made a currency called "RoCash." This currency will be used to purchase things in the game.
The Value of "RoCash" is inserted into the player each time they enter the game. A Data Persistence script automatically saves the state of the value each time it has changed. (I am not using DataStore for a reason...)
Okay, I have a Shop GUI, and in the GUI, there's a button that is supposed to add 5 RoCash to the player's RoCash value each time it's purchased...
The Product works just fine. However, adding the RoCash does not. As you can see below, I want the player to receive 5 RoCash. When the product is purchased, it gives the player 20 RoCash... Why? How can I fix this?
Server-Side
local Player = script.Parent.Parent.Parent.Parent.Parent.Parent
local MarketplaceService = Game:GetService("MarketplaceService")
MarketplaceService.ProcessReceipt = function(receiptInfo)
Player.RoCash.Value = Player.RoCash.Value +5
wait()
Player.PlayerGui.Purchases.RoCash.Visible = true
wait(5)
Player.PlayerGui.Purchases.RoCash.Visible = false
return Enum.ProductPurchaseDecision.PurchaseGranted
end
Client-Side
local buyButton = script.Parent
local productId = 19192652
local Player = script.Parent.Parent.Parent.Parent.Parent.Parent
Type = 0
if Player.Name == "Bolohuc" then Type = 2 else Type = 0 end
buyButton.MouseButton1Click:connect(function()
Game:GetService("MarketplaceService"):PromptProductPurchase(game.Players.LocalPlayer, productId, false, Type)
end)
PLEASE ANSWER AS SOON AS POSSIBLE!
NOTE: I don't want you to change the script unless it's causing the problem... It works fine other than the adding RoCash. Please help me... Provide details with your answer please.
1 answer
The ProcessReceipt was called 4 times probably because you tried to buy the developer product before. It should fix itself. I had the exact same problem with Roblox Tower. (EDIT) How did I not notice this! You're trying to get the player using script.Parent.Parent... You need to actually check for the player using the reciptInfo variable. I got this script from the ROBLOX Wiki. EXAMPLE:
local MarketplaceService = game:GetService("MarketplaceService")
local HealthID, GoldID = 11111, 22222
local PurchaseHistory = game:GetService("DataStoreService"):GetDataStore("PurchaseHistory")
MarketplaceService.ProcessReceipt = function(receiptInfo)
local playerProductKey = receiptInfo.PlayerId .. ":" .. receiptInfo.PurchaseId
-- find the player based on the PlayerId in receiptInfo
for i, player in ipairs(game.Players:GetChildren()) do
if player.userId == receiptInfo.PlayerId then -- this is how you get the player.
-- check which product was purchased (required, otherwise you'll award the wrong items if you're using more than one developer product)
if receiptInfo.ProductId == HealthID then -- Check developer Product.
-- handle purchase. In this case we are healing the player.
player.Character.Humanoid.Health = 100
elseif receiptInfo.ProductId == GoldID then
-- handle purchase. In this instance we're giving the player 100 extra gold.
player.leaderstats.Gold.Value = player.leaderstats.Gold.Value + 100
end
end
end
-- record the transaction in a Data Store
PurchaseHistory:SetAsync(playerProductKey, true)
-- tell ROBLOX that we have successfully handled the transaction (required)
return Enum.ProductPurchaseDecision.PurchaseGranted
end
If I helped vote me up and set this as the answer.
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