How to stop a function with a connected function

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#1

Hello,
I am trying to get a function to stop when the humanoid’s health changes but don’t know how to stop it.

Example

local function loop()
     humanoid:GetPropertyChangedSignal("Health"):Connect(function()
          --Stop the function loop() here
     end)

     local i = 0
     while true do
          i += 1
          print(i)
          wait(0.05)
     end
end

Notes

  • I do not want to do an if statement inside of the while loop, I want the connected function to stop the loop() function itself.
  • I tried a return where it says to stop loop() already but that does not work because it is just returning to the connected function and not the function it is nested within.
#2 
local stopLoop = false

local function loop()
	stopLoop = false
	
	humanoid:GetPropertyChangedSignal("Health"):Connect(function()
		stopLoop = true
	end)
	
	if stopLoop then
		return
	end
	
	local i = 0
	while true do
		i += 1
		print(i)
		wait(0.05)
	end
end
#3

this won’t stop loop() because you created a function inside task.spawn()

#4 
local function loop()
  local c
  local loop = true

  c = Humanoid:GetPropertyChangedSignal("Health"):Connect(function()
    loop = false
    c:Disconnect()
  end)

  while loop do
    ...
  end
end
#5

I know, hence it was edited before you replied, I was toying around in studio.

image

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image768×60 4.95 KB

#7

This would work but the loop is just an example. When I actually use this there will be no loop. I am trying to avoid using if statements every few lines to check if I should stop the function.

#10

Any way of doing this without having to do if statements throughout the code?

#11

Can you provide another code example so we know what you mean? I can probably refactor the code above to be functional driven so you just pass an event and function in and let the code do its thing.

#12 
local function ok()
     Humanoid:GetPropertyChangedSignal("Health"):Connect(function()
          --Stop ok() here
     end)

     --Below is just a bunch of gibberish just for an example
     anim:Play()
     print("hi")
     walkspeed = 15
     boolean = false
     string = "hello"
end
#13

ok will always run to completion in this example, the function never yields so you dont need to stop it.

Luau is not a multi-threaded language, its run a block of code (known as a thread) until it yields, then it moves onto the next one

#14

Its just an example though. Basically what I am trying to see is can I stop the function from the connected function.

#15

I wouldn’t say either of us were being toxic, we were just pointing out faults in the other’s actions. Your comment with a strike-through on the other hand would be considered “toxic”.

#16

The thing is, unless your code yields (maybe through wait), there’s no reason to return out of a function early with an event.

The event will never be fired before your function finishes due to how Roblox handles this stuff

#17

This is unrelated but you can use humanoid.HealthChanged instead of GetPropertyChangedSignal(“Health”), it also has the added bonus of the additional argument which is passed to any connected callback.

https://developer.roblox.com/en-us/api-reference/event/Humanoid/HealthChanged

#18

Im going to be using animation marker events so would I have to check every animation event?