Reselim

-- black frames not included

local RunService = game:GetService("RunService")
local Workspace = game:GetService("Workspace")

local Camera = Workspace.CurrentCamera

local Module = {}

Module.Position = UDim2.new(0, 0, 0, 0)

Fraktality

local camera, cameraChanged
local viewport, viewportChanged

-- Challenge:
--   1. Make `camera' always point to the the current or last known camera.
--     a. Problem: CurrentCamera can be nil.
--     b. Guarantee that `camera' is never nil.
--   2. Make `viewport' always be the current actual size of the viewport.
--     a. Problem: ViewportSize can falsely report (1,1) before it gets fixed up by RenderPrepare.
--     b. Guarantee that `viewport' is never (1,1).