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✓ ANSWER ACCEPTED

"OnServerInvoke is a callback member of RemoteFunction" error? [Question solved]

Asked 3,646 views1 answers

I'm making a custom chat system that uses RemoteFunctions to give a chat handler script the required values to send a chatted message, through a custom GUI, and a RemoteEvent to send the message to all players in the game. I started building it yesterday, and overall it looks good. But I get an error while connecting an event listener to the remote function saying OnServerInvoke is a callback member of RemoteFunction; you can only set the callback value, get is not available.

I'll provide full code snippets of everything used for this. A good and reasonable answer would be perfect and well appreciated. Thanks.

P.S. I know that my chat script isn't fully complete. I'm just showing you how I'm trying to send arguements to a RemoteFunction.

Local chat script (ScreenGui):

local uis = game:GetService("UserInputService")
local plr = game.Players.LocalPlayer
local chatEvent = game.Workspace.SendMessage
local sendChatInfo = game.Workspace.ChatInvoker
local chatting = false
local chatserv = game:GetService("Chat")
uis.InputBegan:Connect(function(input)
	if input.InputType == Enum.UserInputType.Keyboard then
		if input.KeyCode == Enum.KeyCode.Slash then
			if not chatting then
				chatting = true
				script.Parent:CaptureFocus()
			end
		else if input.KeyCode == Enum.KeyCode.Return then
			if chatting then
				chatting = false
				local msg = script.Parent.Text
				sendChatInfo:InvokeServer(plr, msg)
				script.Parent:ReleaseFocus()
			end
		end
		end
	end
end)

Custom Chat Handler (global script):

local SendMessageEvent = game.Workspace.SendMessage
local ChatInvoker = game.Workspace.ChatInvoker
ChatInvoker.OnServerInvoke:Connect(function(plr, msg)
	game.Chat:FilterStringAsync(msg)
	SendMessageEvent:FireAllClients(plr, msg)
end)

Remember; the error is coming from the chat handler that tries to add an event listener to a RemoteFunction at line 3 of the chat handler. There's nothing else conflicting.

Any assistance to help me build an accurate custom chat system is also acceptable.

AnonymousEdited

1 answer

✓ Accepted answer

your setting OnServerInvoke as a event, not a callback. also your not returning any sort of value, use a RemoteEvent instead.

correct syntax:

local SendMessageEvent = game.Workspace.SendMessage
local ChatInvoker = game.Workspace.ChatInvoker

ChatInvoker.OnServerInvoke = function(plr, msg)
    game.Chat:FilterStringAsync(msg)
    SendMessageEvent:FireAllClients(plr, msg)
end)

#remote events and functions

since you dont seem to know the difference between and remote function and event im gonna explain the general idea. RemoteFunctions are for returning a value such as string, int, boolean values etc. RemoteEvents are for communicating to the client or server to do a task which the side the caller or invoker is on cannot do.

--firing and invoking the server

RemoteEvent:FireServer()

print(RemoteFunction:InvokeServer()) -- prints "hello"

then listen for them

--listening 

RemoteEvent.OnServerEvent:Connect(function(player)
	print("hello") -- prints "hello"
end)

RemoteFunction.OnServerInvoke = function(player)
	return "hello" -- returns the string value "hello"
end
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