How to access variables inside the script that required() a modulescript from the modulescript function without cramming it into arguments?

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1

Currently I do this:

In the modulescript:

local modulescript = {}
function modulescript.testFunction(var, var2, var3)
     "CFrame Calculations requiring all the variables here"
end

In a script:

require(modulescript)
local var = POSITION PLACEHOLDER
local var2 = DIRECTION PLACEHOLDER
local var3 = MOUSE POSITION PLACEHOLDER

OnClientEvent:Connect(function()
    modulescript.testFunction(var, var2, var3)
end)

I want to have a library of gun functions in the ReplicatedStorage as I’m planning to add a lot of weapons, and I don’t want to go through every single script whenever I discover a bug that needs to be fixed.

Is there a way to get variables from a script that required the modulescript inside the modulescript without cramming all the variables inside the arguments?

Here’s a TLDR of what I need:
1: script requires gun library that is inside the ReplicatedStorage
2: script calls for a fire function inside the library that needs multiple changing variables (like mouse position, world position and current position of the player) without cramming all the information inside the arguments

2

If you declare your variables in the global scope you can call getfenv() and pass in the environment table as a singular argument.

-- modulescript
local module = {}
function module.test(env)
	print(env.var)
	print(env.var2)
	print(env.var3)
end
return module

-- script

local module = require(modulescript)
var = 1
var2 = 2
var3 = 3

module.test(getfenv())

But in my opinion it might just be better to put all your needed variables inside a table if you only want one parameter.
That way you can send the data you need instead of the entire global variable environment.

-- modulescript
local module = {}
function module.test(data)
	print(data.position)
	print(data.direction)
	print(data.mouse)
end
return module

-- script

local module = require(modulescript)
local var = 1
local var2 = 2
local var3 = 3

module.test({
	position = var,
	direction = var2,
	mouse = var3
})
3

You could make a table/dictionary with all the values and send it as a single parameter. Which is probably not what you’re looking for. You could really just end up making either a main module with all the variables inside that you’d be needing, or you could change the script that calls the function into a module and just read everything from there.

4

The thing with the second option is that you won’t be able to change variables inside the script.

How much of a performance impact does getfenv() have if it is called like 30 times a second?