Can't call a function in a modulescript from a script

Help and Feedback Scripting Support
,
#1

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Keep it simple and clear!

I want to get my script working like normal.

  1. What is the issue? Include screenshots / videos if possible!

I keep getting an error when trying to call my function from my module script:
Workspace.Baldi.AI:6: attempt to index nil with ‘statecalc’

  1. What solutions have you tried so far? Did you look for solutions on the Developer Hub?

Yes, I tried making sure it was stored in the table, which It was (Sorta):
module.statecalc = function()

After that, you should include more details if you have any. Try to make your topic as descriptive as possible, so that it’s easier for people to help you!

--AI Script
local statedict = require(script.State.StateDict)
local wander = require(script.Parent.Modules.Wander)

while true do
	wait(3)
	print(statedict.statecalc())
	local calc = statedict.statecalc()
	local mod1 = "script.Parent.Modules"
	local mod2 = "main()"
	local mod3 = mod1..calc..mod2
	local mod4 = mod3.split(".")
	print(mod4)
end
--Module Script
local module = {}
local states = {
	["0"] = "Idle",
	["1"] = "Wander"
}

module.statecalc = function()
	local val = script.Parent.Value
	local valstr = tostring(val)
	result = states[valstr]
end

return result

Please do not ask people to write entire scripts or design entire systems for you. If you can’t answer the three questions above, you should probably pick a different category.

#2

What is script.State? Never heard of it?

#3

My bad, it is a value that is a parent of the module script:

image
image343×510 53 KB

Right now the value is equal to 0

#4

It could be script.Parent.moduleName.valueName

#5

What does?
The Value has to be parent of module script?
Or script has to be parent of module script?
(Or something else)

#6

Did the answer above solve the problem?

#7

No, it still says it tries to index nil with statecalc :frowning:

#8

You are not returning module which has the function, recheck your code

1 Like
#9

AI Script

local statedict = require(script.Parent.StateDict)
local wander = require(script.Parent.Modules.Wander)

while true do
	wait(3)
	print(statedict.statecalc())
	local calc = statedict.statecalc()
	local mod1 = "script.Parent.Modules"
	local mod2 = "main()"
	local mod3 = mod1..calc..mod2
	local mod4 = mod3.split(".")
	print(mod4)
end

Module Script

local module = {}
local states = {
	["0"] = "Idle",
	["1"] = "Wander"
}

module.statecalc = function()
	local val = script.State.Value
	local valstr = tostring(val)
	result = states[valstr]
end

return result

I fixed the location changes but it still doesn’t work

#10

Then what are you returning here?

#11

The variable: Result

--local val = script.State.Value
--local valstr = tostring(val)
result = states[valstr]
#12

To refer to the value instance named “State” you’d need to use “script.Parent” as it’s the scripts parent.

“script.Parent.Value” would hence refer to the value stored by that value instance.

1 Like
#13

image
I moved it, and fixed the code:

local val = script.State.Value

local statedict = require(script.Parent.StateDict)
#14

Can you show us the whole ModuleScript code or is that all of it?

#15

The one in the main post is all of it.
Btw to clarify this is the error if you haven’t noticed:
image

#16

Ah ok then, here is your issue and also solution:

local module = {}
local states = {
	["0"] = "Idle",
	["1"] = "Wander"
}

module.statecalc = function()
	local val = script.State.Value
	local valstr = tostring(val)
	result = states[valstr]

       return result
end

return module

This should work, sorry for the bad formatting I am on mobile, the reason this wasn’t working is because you weren’t telling the other script what was inside this module using the return module line

2 Likes
#17

That’s not how it works. When the ModuleScript initially runs, result does not yet exist and as a result, will be nil.

Your code should look like:

local module = {}
local states = {
	["0"] = "Idle",
	["1"] = "Wander"
}

module.statecalc = function()
	local val = script.State.Value
	local valstr = tostring(val)
	return states[valstr] --return the value from here
end

return module --return the table to all of the scripts
2 Likes
#18

Yoo IT worked! :smiley: Thanks dude!

1 Like
#19

Yours was also the same, thanks to you aswell!

1 Like
#20

This was simply what I was telling

1 Like