Motor6d spazzing out

[XxNightFang1xX (Reimu)]

1. What do you want to achieve? I want the arm to point towards the mouse position

2. What is the issue? When I aim downwards it spazzes out

3. What solutions have you tried so far? I found this on the toolbox and i tried to use math.clamp on it but it didn’t end up fixing the issue just limiting its range of motion, i want it to be able to point down and even inside the player but why is it spazzing out?.

local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()
local Character = Player.Character or Player.CharacterAdded:Wait()
local RunService = game:GetService("RunService")
local Torso = Character:WaitForChild("Torso")
local RightShoulder = Torso:WaitForChild("Right Shoulder")
local LeftShoulder = Torso:WaitForChild("Left Shoulder")
local LeftArm = Character:WaitForChild("Left Arm")
local RightArm = Character:WaitForChild("Right Arm")

local function Point_C0_To_Mouse(Motor6D, WorldCFrame)
    local Part1_CFrame = Motor6D.Part1.CFrame
    local Stored_C1 = Motor6D.C1
    local Stored_C0 = Motor6D.C0
    local RelativeTo_Part1 = Stored_C0 * Stored_C1:Inverse() * Part1_CFrame:Inverse() * WorldCFrame * Stored_C1
    RelativeTo_Part1 -= RelativeTo_Part1.Position

    local Goal_C0 = RelativeTo_Part1 + Stored_C0.Position
    return Goal_C0
end


RunService.Stepped:Connect(function()
    local Mouse_Pos = Mouse.Hit.Position
    RightShoulder.C0 = Point_C0_To_Mouse(RightShoulder, CFrame.lookAt(RightArm.Position, Mouse_Pos)) * CFrame.Angles(0,0, math.deg(-90))
end)

[Yarik_superpro (Yarik)]

Why don’t you just use .Transform property?
Be sure to run it in PreSimulation tho.

[AudioCreation1 (TheGuyWhoMadeAudios)]

Nevermind, I ran a third test run and turns out this is false. Still lookin’ into the issue.

[red4erik]

local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()
local Character = Player.Character or Player.CharacterAdded:Wait()
local RunService = game:GetService("RunService")
local Torso = Character:WaitForChild("Torso")
local RightShoulder = Torso:WaitForChild("Right Shoulder")
local LeftShoulder = Torso:WaitForChild("Left Shoulder")
local LeftArm = Character:WaitForChild("Left Arm")
local RightArm = Character:WaitForChild("Right Arm")

local function Point_C0_To_Mouse(Motor6D, target)
	local Part0CFrame = Motor6D.Part0.CFrame
	local Stored_C1 = Motor6D.C1
	local Stored_C0 = Motor6D.C0

	local origin = Part0CFrame * Stored_C0
	local lookAt = CFrame.new(origin.Position, target) * CFrame.Angles(math.rad(90), math.rad(90), 0)

	return origin:Inverse() * lookAt
end


RunService.PreSimulation:Connect(function(dt)
	local Mouse_Pos = Mouse.Hit.Position
	RightShoulder.Transform = Point_C0_To_Mouse(RightShoulder, Mouse_Pos)
end)

btw it’s math.rad when you want the radians from degrees. this mistake cost me my sanity

if you need any explanations ask and i’ll try but im not really good at this lol

[red4erik]

local Player = game.Players.LocalPlayer
local Mouse = Player:GetMouse()
local Character = Player.Character or Player.CharacterAdded:Wait()
local RunService = game:GetService("RunService")
local Torso = Character:WaitForChild("Torso")
local RightShoulder = Torso:WaitForChild("Right Shoulder")
local LeftShoulder = Torso:WaitForChild("Left Shoulder")
local LeftArm = Character:WaitForChild("Left Arm")
local RightArm = Character:WaitForChild("Right Arm")

local function Point_C0_To_Mouse(Motor6D, target)
	local Part0CFrame = Motor6D.Part0.CFrame
	local Stored_C1 = Motor6D.C1
	local Stored_C0 = Motor6D.C0

	local origin: CFrame = Part0CFrame * Stored_C0
	local lookAt = CFrame.new(origin.Position, target) * CFrame.Angles(math.rad(90), math.rad(90), 0)

	origin -= lookAt.LookVector * 0.5
	local lookAt2 = CFrame.new(origin.Position, target) * CFrame.Angles(math.rad(90), math.rad(90), 0)

	return origin:Inverse() * lookAt2
end


RunService.PreSimulation:Connect(function(dt)
	local Mouse_Pos = Mouse.Hit.Position
	RightShoulder.Transform = Point_C0_To_Mouse(RightShoulder, Mouse_Pos)
end)

btw this is if you want the “palm” to be looking at the point rather than just the arm looking along it, which is this

vs

[XxNightFang1xX (Reimu)]

Very helpful, I’m using it for a gun aiming system similar to final stands so this works perfectly