How to change variables outside of a function

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1

Hello.

I would like to figure out a way to change variables that are inside of a function, or make a variable that can vary.

I want to do this because then, I could use the same function for changing Different things.

Right now, I could just make many functions but with different variables, but that seems to be an ineffective way of doing it.

2 Likes
2

Could you be more specific?

Here’s an example of something you may be wanting using a BindableEvent:

-- Script1

local add_amount = 1

function add(n)
   return n + add_amount
end

BindableEvent.Event:Connect(function(x)
  add_amount += x
end)

-- Script2

function increase(x)
  BindableEvent:Fire(x)
end

Whenever the BindableEvent is fired by the invocation of the increase function in Script2, the variable add_amount in Script1 will increase by the value sent through the increase function. You are essentially communicating across multiple scripts.

You can also use a ModuleScript or a IntValue to achieve the same effect; there are multiple ways to approach this.

3

Yeah so basically, I got a module script with scripted events.

One of these events is a part that appears when the function is fired, and disappears when the part is on screen (working).

However, creating a million functions with the only difference being the CFrame value, seems inefficient and messy.

edit: math.random is not the answer because I want the part to be in specific coordinates, not just random ones.

4

can you go a bit more in depth or perhaps show some code snippets so we can understand you better, pz

you can pack variables if this is what you mean:

local function something1(t)
      local cf1, cf2, cf3= t.cf1, t.cf2, t.cf3;
    
end
something1({cf1 = CFrame.new(), cf2 = ..., cf3= ...})

if you mean global variables then:


local variable = nil

function something1()
  variable = 1
end
function something2()
  if variable then print(variable) end
end

something1()
something2()

something1() will update the global variable for all other functions to see… these are my 2 guesses to your question…

if not, please provide more specific information regarding your question…

2 Likes
5

Hey, i’ll check this code out, I think this could be the solution i’m looking for.

I had no idea you could store variables. I’ll analyze this code now and see how it could be used and applied in different scenarios.

If I get it to work, i’ll follow up.

6

just to clarify further for you, you can just not send variables you won’t use from that specific point of calling your function aka:

local function something(info)
     local cframe = info.cframe
     if info.DelayedCFrame then
          task.wait(1)
          part.CFrame = cframe
     else
          part.CFrame = cframe
     end
end
something1({cframe = cf, DelayedCFrame = true})
--or
something1({cframe = cf})

this way you can use only what you need in functions without extra arguments or complications…

7

Programming in Lua : 5.2 for more information on variadic functions, which are functions that can accept a variable number of inputs