How so? Unless you plan to have multiple windows, of different resolutions (exceedingly rare in a video game), then WIDTH and HEIGHT simply are pieces of global

How so? Unless you plan to have multiple windows, of different resolutions (exceedingly rare in a video game), then WIDTH and HEIGHT simply are pieces of global state. Whether you like it or not, global state exists, and if you need access to it in many places, then passing it up and down the call stack becomes an exercise in pointless book-keeping.