Sharing / Calling Variables Between Two Local Scripts

Help and Feedback Scripting Support
#1

  1. What do you want to achieve? I’m creating a dialogue. I want to run the dialogue function once the value of variable A is set to true using a seperate local script than what the variable / value was originally declared in.

  2. What is the issue? The variable is declared in the “joinMenuScript” local script, although I want to detect it’s true / false value through a seperate local script, “steveDialogueScript”. The scripts are both local, and are both children of StarterGui.

  3. What solutions have you tried so far? I’ve looked at about 3 - 4 articles, and some were answers too specific for this issue – or were across local + server or server + server.

For a better example,

Local Script A

local example = true

Local Script B

if example then
  print("hello, world!")
end
#2

You would be looking at BindableEvents, and or a .Changed Event if you are using a ValueBase or Attribute.

You can essentially Connect an Event in ScriptB to Detect Changes from ScriptA, which for example:

A:

Example.Value = true -- this value is now set to true, if we 
-- connect a .Changed Event, it will be able to fire on other Scripts

B:

Example.Changed:Connect(function(value) -- detects change from Example
    -- because its on the Client, the server will be unaware of the change
    -- and this will only fire on the cliebt
    if value then -- if our value is true
        print("Hello world!") -- fire code
    end
end)

For BindableEvents if you are Attempting to constantly share between both scripts, you would just have a a Reciever on both scripts (two separate BindableEvents).

Edit:

I do not recommend using _G as what is stated below under any circumstance. _G is infamous for being easily exploitable by exploiters, which is something you would like to prevent in your games.
As _G is shared globally within the Context Level its in, exploiters can make a simple change that can effect the entire use of the global variable.

2 Likes
#3

I personally use _G to do this, though im not sure if its best practice to do so.

Example:

Script #1:

_G.Variable = true

Script #2:

if _G.Variable == true then

— Your code.

end

1 Like
#4

Hmm, this doesn’t seem to work for me. Am I utilizing it wrong?

(I’ve declared all the variables such as playButton above, I just thought it’d be unnecessary to share.)

~Script A~

local playbuttonclicked = false

playButton.MouseButton1Click:Connect(function()
    _G.playbuttonclicked = true
end)

~Script B~

if _G.playbuttonclicked == true then
	print("works!")
end
#5

Reference it like this:

_G.playbuttonclicked = false

playButton.MouseButton1Click:Connect(function()
    _G.playbuttonclicked = true
end)

~Script B~

if _G.playbuttonclicked == true then
	print("works!")
end
#6

The easiest way is to use attributes!

--Local script A
Player:SetAttribute("Example", true)

--Local script B
if Player:GetAttribute("Example") then
end

--You can remove the attribute doing:
Player:SetAttribute("Example")
3 Likes
#7

You could try

  • Attributes (these are like custom properties on an Instance)
  • Boolean instance
  • _G
  • Create a module for communicating between the two scripts
  • Just merge your scripts
2 Likes
#8

The first loacl script in StarterGui

“joinMenuScript”

local playButton = joinMenuSgui.playButtonjoinmenu

Player = game.Players.LocalPlayer

Player:SetAttribute("playbuttonclicked", false)

playButton.MouseButton1Click:Connect(function()
	Player:SetAttribute("playbuttonclicked", true)
end)

The second local script in StarterGui

“steveDialogueScript”

Player = game.Players.LocalPlayer

if Player:GetAttribute("playbuttonclicked", true) then
	print("works")
end

There are no errors in the output, this simply just does not print “works”.

#10

On the second local script (“steveDialogueScript”), you check if the player have “playbuttonclicked” attribute on join, you need to have a “listener” for when your att changes:

Second local script

local Player = game.Players.LocalPlayer

Player:GetAttributeChangedSignal("playbuttonclicked"):Connect(function()
      if Player:GetAttribute("playbuttonclicked", true) then
	     print("works")
       end
end)
#11

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