[Roblox] IsInSpotLight

function isInSpotLight(spotLight,position)
    local cone = math.rad(spotLight.Angle)
    local part = spotLight.Parent
    local direction = CFrame.new(part.Position, (part.CFrame * CFrame.new(Vector3.FromNormalId(spotLight.Face))).p)
    local space = direction:pointToObjectSpace(position)
    local unit = space.unit
    return (unit.Z < 0) and (unit.X > (cone/-2) and unit.X < (cone/2)) and (space.magnitude <= spotLight.Range)
end