[TUTORIAL] How to add "Redeemable Codes" in your game?

[Froredion]

Adding Redeemable Codes in your Game

In this tutorial, we will be using a datastore to make it so that they are able to claim it only once, let’s start by adding the datastore variable.

local DataStore = game:GetService("DataStoreService"):GetDataStore("YOUR_DATASTORE_NAME")

We’ve added it now, this time you’d have to add a PlayerAdded Event and PlayerRemoving Event.

local DataStore = game:GetService("DataStoreService"):GetDataStore("YOUR_DATASTORE_NAME")

local codes = {}

game.Players.PlayerAdded:Connect(function(plr)
-- Codes
end)

game.Players.PlayerRemoving:Connect(function(plr)
-- Codes
end)

There’s a lot of way to save if the player already used the datastore but we will use one of the tricky method!

local DataStore = game:GetService("DataStoreService"):GetDataStore("YOUR_DATASTORE_NAME")

local data = {}

local codes = {
"Sample1",
"Sample2"
}

game.Players.PlayerAdded:Connect(function(plr)
	data[plr.Name] = {}
	local Data
	local success, err = pcall(function()
	Data = DataStore:GetAsync(plr.UserId)
	
	end)
	if success then
		if Data ~= nil then
		for i=1,#Data do
        	data[plr.Name][i] = Data[i]
		end
		end
	end
	while game.Players:FindFirstChild(plr.Name) do
		for i=1,3 do
		local success, err = pcall(function()
			DataStore:SetAsync(plr.UserId, {unpack(data[plr.Name])})
		end)
		if success then
			break
		end
		wait(1)
		end
		wait(120)
	end
end)

game.Players.PlayerRemoving:Connect(function(plr)
	for i=1,3 do
	local success, err = pcall(function()
		DataStore:SetAsync(plr.UserId, {unpack(data[plr.Name])})
	end)
	wait(1)
	end
end)

You might have noticed I added a lot of things in the code, what I added are the followings:

• List item
• Tables that should contain all data and the codes table
• GetAsyncs/SetAsyncs with pcalls
• Saving Data when Leaving
• Auto-saves every 2 minutes

Now, we’re finish with saving the data, that should be good now, we will now detect if the player is chatting, we’re going to add more line codes in the PlayerAdded Event and put the Chatted Event.

local DataStore = game:GetService("DataStoreService"):GetDataStore("YOUR_DATASTORE_NAME")

local data = {}

local codes = {
"Sample1",
"Sample2"
}

game.Players.PlayerAdded:Connect(function(plr)
	data[plr.Name] = {}
	local Data
	local success, err = pcall(function()
	Data = DataStore:GetAsync(plr.UserId)
	
	end)
	if success then
		if Data ~= nil then
		for i=1,#Data do
        	data[plr.Name][i] = Data[i]
		end
		end
	end
	plr.Chatted:Connect(function(msg)
		if string.sub(string.lower(msg),1,6) == "!code " then
			local enteredcode = string.sub(msg,7)
			if data[plr.Name] ~= nil then
			for i=1,#data[plr.Name] do	
				if data[plr.Name][i] == enteredcode then
					return
				end
			end
			end
			for i=1,#codes do
				if codes[i] == enteredcode then
				print("Code Given")
				table.insert(data[plr.Name],codes[i])
				print(data[plr.Name][1],data[plr.Name][2],data[plr.Name][3],data[plr.Name][4])
				-- Add Reward
				end
			end
		end
	end)
	while game.Players:FindFirstChild(plr.Name) do
		for i=1,3 do
		local success, err = pcall(function()
			DataStore:SetAsync(plr.UserId, {unpack(data[plr.Name])})
		end)
		if success then
			break
		end
		wait(1)
		end
		wait(120)
	end
end)

game.Players.PlayerRemoving:Connect(function(plr)
	for i=1,3 do
	local success, err = pcall(function()
		DataStore:SetAsync(plr.UserId, {unpack(data[plr.Name])})
	end)
	wait(1)
	end
end)

You might have noticed I added a lot of things as well here, what I’ve added is just in the PlayerAdded Event and it’s this:

• List item
• Tables that should contain all data and the codes table
• GetAsyncs/SetAsyncs with pcalls
• Saving Data when Leaving
• Auto-saves every 2 minutes

That should be finished now, you can add your rewards in the comment of the script.

Now you can use the code only once, try it out and it will only print “Code Given” once every code!