Argument 3 missing or nil

Help and Feedback Scripting Support
#1

Hi! This might be a simple issue for u but I don’t get it.
So here is my problem, I get “Argument 3 missing or nil” error because of this part of code:

CFrame.Angles((player.Character:FindFirstChild("HumanoidRootPart").CFrame.lookVector - mouse.Hit.p).Unit)

However in the output it prints the Vector3 value, example: 0.0292050056, 0.918657899, 0.393973082
Here is the full code, in case you need it:

local player =  game:GetService("Players").LocalPlayer
local mouse = player:GetMouse()
local waist = player.Character:FindFirstChild("Waist", true)
local defPos = waist.C0.Y
game:GetService("RunService").RenderStepped:Connect(function()
	print((player.Character:FindFirstChild("HumanoidRootPart").CFrame.lookVector - mouse.Hit.p).Unit)
	waist.C0 = CFrame.new(0, defPos, 0) * CFrame.Angles((player.Character:FindFirstChild("HumanoidRootPart").CFrame.lookVector - mouse.Hit.p).Unit)
end)

Thanks for help!

#2

CFrame.Angles takes three arguments, not one. You’ve provided 1 Vector3 argument, and have provided nothing (aka nil) for both second and third arguments.

You could do:

local unit = (player.Character:FindFirstChild("HumanoidRootPart").CFrame.lookVector - mouse.Hit.p).Unit
local cframe = CFrame.Angles( unit.X, unit.Y, unit.Z )

though I struggle to see a use case for treating the unit vector as radian inputs to the Angles constructor. What is it you’re trying to achieve?

7 Likes
#3

Thank u for ur reply, I am trying to rotate waist to the direction of the mouse, but its obviously broken, because I am new to this kind of stuff… p.s. dont send me a code or sth like this, bc I am trying to do it by myself

#4

No problem. You’ll need some trigonometry to determine angles between vectors. Best of luck, and experimenting and working things out for yourself is my preferred method too.

#5

just a quick question, do u know by any chance how to connect two dots with a vector, for example the position of root and mouse position?