It is recommended for you to use Operator so it can be converted to Castle rules.

Free to remix for the script! Or just grab it from here- local UserInputService = game:GetService("UserInputService") local RunService = game:GetService("RunService") local plr = game:GetService("Players").LocalPlayer local char = plr.Character or plr.CharacterAdded:Wait() local hum = char:WaitForChild("Humanoid") local root = hum.RootPart -- The HumanoidRootPart local shiftLockEnabled = false -- Function to toggle shift lock local function shiftLock(active) if active then hum.CameraOffset = Vector3.new(0, 0, 0) hum.AutoRotate = false RunService:BindToRenderStep("ShiftLock", Enum.RenderPriority.Character.Value, function() UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter local _, y = workspace.CurrentCamera.CFrame.Rotation:ToEulerAnglesYXZ() root.CFrame = CFrame.new(root.Position) * CFrame.Angles(0, y, 0) end) else hum.CameraOffset = Vector3.new(0, 0, 0) RunService:UnbindFromRe