Buying Coins with robux

Help and Feedback Scripting Support
#1

So I made a script, and I need it to do something. Heres the script.

button.MouseButton1Down:Connect(function()

end)

Now, inside there, I need it to prompt to buy a certain Developer Product, not gamepass.
I then need it to make sure they actually bought it, and then give them the coins.

I am not sure how to prompt Developer Products. Is it the same as gamepasses? And how do I check that they bought it?

All help is appreciated, thanks yall!

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#2

https://developer.roblox.com/en-us/api-reference/callback/MarketplaceService/ProcessReceipt

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#3 
local MarketplaceService = game:GetService("MarketplaceService")
local Players = game:GetService("Players")
 
local productID = 0000000  -- Change this to your developer product ID
 
-- Function to prompt purchase of the developer product
local function promptPurchase()
	local player = Players.LocalPlayer
	MarketplaceService:PromptProductPurchase(player, productID)
end
2 Likes
#4

The Local Script to prompt the devProduct Purchase can be set like this

local Player = game.Players.LocalPlayer
local MarketPlaceService = game:GetService("MarketplaceService")

local DevProductID = script.Parent.DevProductID.Value
local PurchaseButton = script.Parent

PurchaseButton.MouseButton1Click:Connect(function()
	MarketPlaceService:PromptProductPurchase(Player, DevProductID)
end)

You can have a value inside the buy button like me or just put the value its self on “local DevProductID = script.Parent.DevProductID.Value” and then use the MarketPlaceService and Promt the product purchase.

#6

Not true. All you need to do to make this compatible to his script is

PurchaseButton.MouseButton1Click:Connect(function()
	promptPurchase()
end)
#8

As you can see I get the localPlayer. Read the script properly :

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#9

Sorry I did not see that :man_facepalming:

2 Likes
#10

Its all good mate. It was hard to spot :rofl:

2 Likes
#11

Ok so I am back from my holiday, so I just put this into a script (or a localscript?) and then I say

script.Parent.MouseButton1Down:connect(function()
promptPurchace()
end)
#12

I also cant make the game now for 7 days, was falsely banned of roblox for a week, Ill just suck it up.

#13

Local Script. (Character Requirements)

#14

so now that its prompted it, how do I check if they have actuallly clicked “Buy” and give them their coins

#15

so i prompted the purchace, it said something went wrong but still gave me the coins when I never paid…

1 Like
#16

Show me what It said went wrong.

#17

ProcessReceipt gets called when the player purchases the product so if you have that defined then it’s already handled for you. If you have a client-side effect that’s dependent on the prompt being closed then you can use PromptProductPurchaseFinished, but NEVER USE IT TO HANDLE PRODUCT PURCHASES. ProcessReceipt has special requirements to successfully process a product purchase (returning a ProductPurchaseDecision enum).

#18

when I clicked the gui to prompt purchace it said that something went wrong, so it never bought it but still gave me coins

#19

I like to keep mine like this:
It has a IntValue inside the button and the IntValue is the Dev Product Id.

local Player = game.Players.LocalPlayer
local MarketPlaceService = game:GetService("MarketplaceService")
local DevProductID = script.Parent.DevProductID.Value
local PurchaseButton = script.Parent

PurchaseButton.MouseButton1Click:Connect(function()
MarketPlaceService:PromptProductPurchase(Player, DevProductID)
end)
#20

And can I see your script on how you give the player coins?

#21

so its not the official “coins” variable, just a test script to see if it adds it.
local coins = 0

PromptPurchase() – the prompt purchase function

and once it prompts the purchase it adds 100 coins
coins = coins +100

#22

Screen Shot 2021-07-06 at 11.05.53 am
the error so uh this is what it says