3 variables in a for loop?

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#1

Does anybody know how I could get 3 values with a for loop? I am trying to find points of a path for a tds game. I need to find the distance between the point the mob is going to and the one after that, so I can find the distance. This is my code:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local TweenService = game:GetService("TweenService")

local Module = require(ReplicatedStorage.Points)

local Humanoid = script.Parent
local Monster = Humanoid.Parent

local TweenInfo = TweenInfo.new(5, Enum.EasingStyle.Linear)

for i, V, C in pairs(Module) do
	local distance = math.abs(V:WaitForChild("Attachment").WorldPosition, C:WaitForChild("Attachment").WorldPosition).Magnitude
	print(distance)
	goal = {CFrame  = V}
	local Tween = TweenService:Create(Monster, TweenInfo, goal)
	Tween:Play()
	Tween.Completed:Wait()
end

And this is my module script(I know it’s useless to use a module script):

local points = workspace.Points

local positions = {
	points.Start,
	points.Point1,
	points.Point2,
	points.Point3,
	points.Point4,
	points.End
}

return positions

If there is a way to do this please let me know. Thanks!

#2

Just subtract both vectors (the attachments world position) and get the magnitude. This will give you the distance between both points.

1 Like
#3

You can’t have more than 2 values for a for loop. I assume C is the next point? You can just use the next function to get the next value:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local TweenService = game:GetService("TweenService")

local Module = require(ReplicatedStorage.Points)

local Humanoid = script.Parent
local Monster = Humanoid.Parent

local TweenInfo = TweenInfo.new(5, Enum.EasingStyle.Linear)

for i, V in pairs(Module) do
    local i2, C = next(Module, i)
    -- i2 is the index of the next item in the list
    -- C is the value of the next item in the list

    if not i2 then
       -- current item is the last item in the list
    end

	local distance = math.abs(V:WaitForChild("Attachment").WorldPosition, C:WaitForChild("Attachment").WorldPosition).Magnitude
	print(distance)
	goal = {CFrame  = V}
	local Tween = TweenService:Create(Monster, TweenInfo, goal)
	Tween:Play()
	Tween.Completed:Wait()
end
#4

That’s not the issue I have to get the second point.

#5

Tried that and it still says it tried to index nil with waitforchild.

#6

To add onto this since you already have an array with the instances stored, in your iteration to successfully get your start point and end point just make a reference to the current part in the iterations position, and a reference to the one behind it by doing i - 1 which will return the previous index or u can do it vise versa (referring to your references)

#7

What does your new code look like? If it’s the same as what I posted, you need to modify this part:

When the loop gets to the end of the list, there won’t be a next point to get to

#8

This:

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local TweenService = game:GetService("TweenService")

local Module = require(ReplicatedStorage.Points)

local Humanoid = script.Parent
local Monster = Humanoid.Parent

local TweenInfo = TweenInfo.new(5, Enum.EasingStyle.Linear)

for i, V in pairs(Module) do
	local C = next(Module, i)
	local distance = math.abs((V:WaitForChild("Attachment").WorldPosition, C:WaitForChild("Attachment").WorldPosition).Magnitude)
	print(distance)
	goal = {CFrame  = V}
	local Tween = TweenService:Create(Monster, TweenInfo, goal)
	Tween:Play()
	Tween.Completed:Wait()
end

But your code didn’t work either. I will try modifiying it though

#9

Now it says

  19:27:14.980  Workspace.OrbEnemy.Humanoid.Enemy:40: invalid argument #1 to 'abs' (number expected, got Vector3)  -  Server - Enemy:40
#10

local ReplicatedStorage = game:GetService(“ReplicatedStorage”)
local TweenService = game:GetService(“TweenService”)

local Module = require(ReplicatedStorage.Points)

local Humanoid = script.Parent
local Monster = Humanoid.Parent

local TweenInfo = TweenInfo.new(5, Enum.EasingStyle.Linear)

for i, V in pairs(Module) do
local Behind = Module[i-1]
local distance = math.abs((V:WaitForChild(“Attachment”).WorldPosition -Behind:WaitForChild(“Attachment”).WorldPosition).Magnitude)
print(distance)
goal = {CFrame = V.CFrame}
local Tween = TweenService:Create(Monster, TweenInfo, goal)
Tween:Play()
Tween.Completed:Wait()
end try this

#11

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