– How to use remote functions roblox

RemoteFunctions are used to send messages between the client and the server, but unlike RemoteEvents, they send a response back.

They are mostly used for the client to get some information form the server like a players data, an item price, or a calculation.

The difference between RemoteEvents and RemoteFunctions

• RemoteEvents sends data and thats it.
• RemoteFunctions also sends data, but they get a response back.

RemoteFunctions should be stored in a place both the client and server can access – like ReplicatedStorage.

Excample

Lets say we wanted the client to see if they had enough Coins to buy a tool. Then we could do something like this:

Code Excample - Client/Local scriptlocal ReplicatedStorage = game:GetService("ReplicatedStorage")
local getCoins = ReplicatedStorage:WaitForChild("YourRemoteFunction")

local coins = getCoins:InvokeServer()
print(coins)

Code Excample - Serverlocal ReplicatedStorage = game:GetService("ReplicatedStorage")
local getCoins = ReplicatedStorage:WaitForChild("YourRemoteFunction")

getCoins.OnServerInvoke = function(player)
    -- Lets return a fake amount for now
    return 42
end

This will then print 42 on the client.

Note on Performance

Unlike RemoteEvents, InvokeServer() waits for a response. Don’t use it in high-speed loops. Always assume it might take some time to respond.