Neck.lua

-- Put this under StarterPlayerScripts

local Players = game:GetService("Players")
local localPlayer = Players.LocalPlayer
local character: Model
local humanoid: Humanoid
local rootpart: Part
local neck: Motor6D

local RunService = game:GetService("RunService")

local currentCamera: Camera = workspace.CurrentCamera

local connections = {}

function connections.add(name: string, connection: RBXScriptConnection)
    connections[name] = connection
end

function connections.remove(name: string)
    connections[name]:Disconnect()
    connections[name] = nil
end

local playerUtil = {}

function playerUtil.handleLocalCharacter(callbacks)
    character = localPlayer.Character or localPlayer.CharacterAdded:Wait()

    local function characteradded(addedCharacter: Model)
        character = addedCharacter
        humanoid = character:WaitForChild("Humanoid")
        rootpart = humanoid.RootPart

        for _, callback in ipairs(callbacks.CharacterAdded) do
            callback(character)
        end

        connections.add(
            "Died",
            humanoid.Died:Connect(function()
                for _, callback in ipairs(callbacks.Died) do
                    callback(humanoid)
                end
            end)
        )
    end

    task.spawn(characteradded, character)
    localPlayer.CharacterAdded:Connect(characteradded)
end

task.spawn(playerUtil.handleLocalCharacter, {
    CharacterAdded = {
        function()
            neck = character:FindFirstChild("Neck", true)
        end,

        function()
            connections.add(
                "Neck",
                RunService.RenderStepped:Connect(function()
                    if neck then
                        local cameraDirection = rootpart.CFrame:ToObjectSpace(currentCamera.CFrame).LookVector

                        neck.C0 = CFrame.new(0, neck.C0.Y, 0)
                            * CFrame.Angles(0, -cameraDirection.X, 0)
                            * CFrame.Angles(cameraDirection.Y, 0, 0)
                    end
                end)
            )
        end,
    },
    Died = {
        function()
            connections.remove("Died")
            connections.remove("Neck")
        end,
    },
})