What Are RemoteEvents?

An RemoteEvent is a one way asynchronous way of communication and data delivery. RemoteEvents can operate in three ways:

• Server > Client ( RemoteEvent:FireClient() )
• Client > Server ( RemoteEvent:FireServer() )
• Server > All Clients ( RemoteEvent:FireAllClients() )

For this tutorial, i will cover the basics of basics over how to use RemoteEvents.

Let's say, you wanted to utilize an RemoteEvent. Knowing that the server-client boundary can only be accessed through RemoteEvents and RemoteFunctions, we will need two scripts: one LocalScript and one Script.

In the script, you write this as to connect to the RemoteEvent in ReplicatedStorage (if it's named RemoteEvent):

-- Server Script

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage:WaitForChild("RemoteEvent")

wait(10) -- Wait function to ensure that the client loads before the event is fired

RemoteEvent:FireAllClients()

We successfully managed to connect to the RemoteEvent and fire it. But how can we interact with it?

In the LocalScript (recommended to place under StarterPlayerScripts), write this:

-- Local Script

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage:WaitForChild("RemoteEvent")

local function onEventFire()
	print("Event received successfully")
end

RemoteEvent.OnServerEvent:Connect(onEventFire)

--[[ 
Output:
Event received succesfully
]]

Summary of the Scripts

An brief summary over how this works for the Server's side:

• Connect to the RemoteEvent in ReplicatedStorage
• Wait 10 seconds to ensure the client loads
• Fire the RemoteEvent

And for the client side:

• Connect to the RemoteEvent in ReplicatedStorage
• Create a function for when the Event is fired
• Connect the function to the RemoteEvent to detect when it is fired
• Run the function when the Event is fired

Payloads

You can also use the parentheses in the RemoteEvent:FireAllClients() to transmit additional information (payload). For example:

-- Server Script

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage:WaitForChild("RemoteEvent")

wait(10) -- Wait function to ensure that the client loads before the event is fired

RemoteEvent:FireAllClients("This is the payload.")

-- Local Script

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage:WaitForChild("RemoteEvent")

local function onEventFire(payload)
	print(payload)
end

RemoteEvent.OnServerEvent:Connect(onEventFire)

--[[
Output:
This is the payload.
]]

Conclusion

Note that there's more to RemoteEvents than this, although this is how RemoteEvents work to a fairly simplified point.

Happy coding!