Returning a function in a Remote Function

Help and Feedback Scripting Support
#1

Im developing a graphing calculator atm, where you can input any function through a string

But I’m attempting to fire that equation to the server, make it a function with parameters, and return it back

  • Server Side
game.ReplicatedStorage.Function.OnServerInvoke = function(p,equation)
--for example the equation is 'x^2'
	local function a(x)
		return loadstring('function a(x) return ' ..equation.. ' end return a('..x..')')()
	end
	print(a(5)) - this perfectly gives 25 (5^2=25)
	return a -- returning the function 
end
  • Client
local func = game.ReplicatedStorage.Function:InvokeServer(script.Parent.Input.Text)
print(func) -- prints nil instead of 'function: 0xeac8497c435b02e6'

Theres nothing special about loadstring in this case either

game.ReplicatedStorage.Function.OnServerInvoke = function(p,equation)
	local function a(x) return x end
print(a(5)) -- 5
	return a
end

it still returns nil on the client

Am I incorrectly doing something?

1 Like
#2

It’s not anything you’re doing wrong; functions don’t replicate between the client and server

#3

is there a way for the server and client to communicate with functions?

#4

Module Script

( need more chars )

#5

this would work fine if i werent using loadstring, loadstring I believe is exclusive to serverscriptservice, and modules cant depend on other modules, so creating a module in sss, then making another in rs relying on the one in sss wont function.

#6

you can send the string version of the script and send it to client then loadstring it in client

#7

You can’t use loadstring on the client and that would also be a security flaw

#8

lua vms

#9 
-- module script
local module = {}

module.FunctionA = function(a, b)
    return a + b
end

module.FunctionB = function(a, b)
    return a - b
end

return module

-- server script
local module = require(game.ReplicatedStorage.ModuleScript)

game.ReplicatedStorage.Function.OnServerInvoke = function(player, equation)
    local data = {"FunctionA", equation, 69}
   
    local value = module[data[1]](data[2], data[3])
    print("Server", value)

    return data
end

-- client script
local module = require(game.ReplicatedStorage.ModuleScript)

local data = game.ReplicatedStorage.Function:InvokeServer(420)

local value = module[data[1]](data[2], data[3])
print("Client", value)