Camera script suddenly broke on me

It was working a while ago in my game, but now it suddenly stopped working properly.

WHAT IT IS SUPPOSED TO DO: Block you from zooming out, body and person follows where the mouse it; basically a third person camera that prevents you from zooming in or out, and follows the mouse.

WHAT ITS DOING NOW: It is allowing users to zoom in and out, and the only affect it's doing is the body is facing the wrong way ( hard to explain )

Here is the code

local abs = math.abs

local distance = 5
local zoom = 70 --(20 to 80)
local sensitivity = 0.25
local height = 1

local player =  game.Players.LocalPlayer
local mouse = player:GetMouse()
local camera = Workspace.CurrentCamera

while not camera do
    Workspace.Changed:wait()
    camera = Workspace.CurrentCamera
end
while not mouse do
    wait(0.5)
    mouse = player:GetMouse()
end

wait()

local char = true
local gyro, head, torso

camera.CameraType = "Scriptable"
camera.FieldOfView = zoom

while wait() do
    if char ~= player.Character then
        char = player.Character
        while not char do
            char = player.CharacterAdded:wait()
        end
        torso = char:WaitForChild "Torso"
        head = char:WaitForChild "Head"
        gyro = torso:FindFirstChild "lookatmouse" or Instance.new "BodyGyro"
        gyro.maxTorque = Vector3.new(0, 7000, 0)
        gyro.cframe = CFrame.new(0, 0, 1) + torso.Position
        gyro.Name = "lookatmouse"
        gyro.Parent = torso
    end
    local hit = mouse.Hit
    if mouse.Hit.p.magnitude ~= 0 then
        local objhit = torso.CFrame:pointToObjectSpace(hit.p)
        local pos = head.Position + Vector3.new(0, height, 0)
        local focus = CFrame.new(pos)
        local vec
        if abs(objhit.x) > objhit.z and 
            (objhit.x/objhit.y)^2 + (objhit.z/objhit.y)^2 > 1 then
            vec = mouse.Hit.p - pos
        else
            vec = camera.CoordinateFrame.lookVector
        end
        pos = pos - vec.unit * distance
        camera:Interpolate(
            CFrame.new(
                pos,
                vec + pos
            ),
            focus,
            sensitivity
        )
        gyro.cframe = mouse.Hit
    end
end