Is there a way to uncall a function?

Help and Feedback Scripting Support
1

i am having a problem with this, everytime i call the function and the player dies the function still works on the player. is there a way to make it so it doesnt do that?
code:

local function infect()
	local last = nil
	for i,v in pairs(game.Players:GetChildren()) do
		if last == nil then
			last = v
		end
		if last.Character and v.Character then
			if last and last ~= v then
			local dist = (last.Character.HumanoidRootPart.Position-v.Character.HumanoidRootPart.Position).magnitude	
			         	if dist <= 5 then
						print("The player "..v.Name.." is close to "..last.Name)	
					local boolvalue = Instance.new("BoolValue")
							boolvalue.Parent = v.Character 
							local boolvalue2 = Instance.new("BoolValue")
					boolvalue2.Parent = last.Character 
						boolvalue.Name = "Infected"
							boolvalue = true
							boolvalue2 = true
					print("yes")
                        if v.Character:FindFirstChild("BoolValue") == true then
						       print("no")
						                 	end
						last = v
					 end	
				 end
			 end
		 end
	  end
2

So i think you should work with coroutines for this. You can read the article here. With this you can basically just pause Threads from working.

3

return (without any brackets) is used to instantly kill a function. You can also use it in more advanced functions to return some objects. For example:

local function findp()
    local part = workspace.Part
    return part
end

local Part = findp()
print(Part.Name) --> Part

Otherwise, you can write nothing after the return to instantly kill a function.
If I guess correctly, this should be your final version:

local function infect()
	local last = nil
	for i,v in pairs(game.Players:GetChildren()) do
		if last == nil then
			last = v
		end
		if last.Character and v.Character then
			if last and last ~= v then
			local dist = (last.Character.HumanoidRootPart.Position-v.Character.HumanoidRootPart.Position).magnitude	
			         	if dist <= 5 then
						print("The player "..v.Name.." is close to "..last.Name)	
					local boolvalue = Instance.new("BoolValue")
							boolvalue.Parent = v.Character 
							local boolvalue2 = Instance.new("BoolValue")
					boolvalue2.Parent = last.Character 
						boolvalue.Name = "Infected"
							boolvalue = true
							boolvalue2 = true
					print("yes")
                        if v.Character:FindFirstChild("BoolValue") == true then
						       print("no")
                               return
						                 	end
						last = v -- You should note that this won't work after return
					 end	
				 end
			 end
		 end
	  end
4

Will this work until the player dies?

5

I think yes, unless the script prints “no” while the player is alive.

6

its not even calling it for some reason
is there something wrong?
code:

local rs = game:GetService("RunService")
--local soundfolder = script.SoundFolder:GetChildren()
local random = math.random(1,2)
local debounce = true
local i = 2
local infected = false
--local value = game.StarterPlayer.StarterCharacterScripts.Infected.Value
local function infect()
	local last = nil
	for i,v in pairs(game.Players:GetChildren()) do
		if last == nil then
			last = v
		end
		if last.Character and v.Character then
			if last and last ~= v then
			local dist = (last.Character.HumanoidRootPart.Position-v.Character.HumanoidRootPart.Position).magnitude	
			         	if dist <= 5 then
						print("The player "..v.Name.." is close to "..last.Name)	
					local boolvalue = Instance.new("BoolValue")
							boolvalue.Parent = v.Character 
							local boolvalue2 = Instance.new("BoolValue")
					boolvalue2.Parent = last.Character 
						boolvalue.Name = "Infected"
							boolvalue = true
							boolvalue2 = true
					print("yes")
                        if v.Character:FindFirstChild("BoolValue") == true then
						       print("no")
                               return
						                 	end
						last = v -- You should note that this won't work after return
					 end	
				 end
			 end
	     end
end

		
local playerschildren = game.Players:GetChildren()
	game.ReplicatedStorage.characteradded.OnServerEvent:Connect(function(plr)
	local randomnum2 = math.random(1,2)
	print(randomnum2)
	if randomnum2 == 2 then
		infect(plr)
		end
end)
7 
local rs = game:GetService("RunService")
--local soundfolder = script.SoundFolder:GetChildren()
local random = math.random(1,2)
local debounce = true
local i = 2
local infected = false
--local value = game.StarterPlayer.StarterCharacterScripts.Infected.Value
local function infect()
	local last
	for i,v in pairs(game.Players:GetChildren()) do
		if last == nil then
			last = v
		end
		if last.Character and v.Character  and v.Character.Humanoid.Health > 0 and last.Character.Humanoid.Health > 0 then
			if last and last ~= v then
			local dist = (last.Character.HumanoidRootPart.Position-v.Character.HumanoidRootPart.Position).magnitude	
			         	if dist <= 5 then
						print("The player "..v.Name.." is close to "..last.Name)	
					local boolvalue = Instance.new("BoolValue")
							boolvalue.Parent = v.Character 
							local boolvalue2 = Instance.new("BoolValue")
					boolvalue2.Parent = last.Character 
						boolvalue.Name = "Infected"
							boolvalue.Value = true
							boolvalue2.Value = true
					print("yes")
                        if v.Character:FindFirstChild("BoolValue") == true then
						       print("no")
						                 	end
						last = v
					 end	
				 end
			 end
	     end
end

		
local playerschildren = game.Players:GetChildren()
	game.ReplicatedStorage.characteradded.OnServerEvent:Connect(function(plr)
	local randomnum2 = math.random(1,2)
	print(randomnum2)
	if randomnum2 == 2 then
		infect(plr)
		end
end)

I’m not sure if this is what you wanted, but if any of 2 players mentioned in the script is dead, nothing happens. Plus I fixed some other stuff.