Fixes Magic Arena's broken full screen implementation on macOS

arena-macos-fixes.sh

# this forces Arena into full screen mode on startup, set back to 3 to reset
# note that if you go into the Arena "Graphics" preference panel, it will reset all of these
# and you will need to run these commands again
defaults write com.wizards.mtga "Screenmanager Fullscreen mode" -integer 0
defaults write com.wizards.mtga "Screenmanager Resolution Use Native" -integer 0

# you can also replace the long complicated integer bit with any other scaled 16:9
# resolution your system supports.
# to find the scaled resolutions, go to System Preferences --> Display and then
# divide the width by 16 and multiple by 9. on my personal system this ends up
# as 3456 x 1944 (versus the bizarre 1728x1117 it will very temporarily select
# when clicking the full screen option in the client
defaults write com.wizards.mtga "Screenmanager Resolution Width" -integer \
  $(system_profiler SPDisplaysDataType | grep Resolution | cut -c23-26)
defaults write com.wizards.mtga "Screenmanager Resolution Height" -integer \
  $(bc <<< "$(system_profiler SPDisplaysDataType | grep Resolution | cut -c23-26) / 16 * 9")

native per google is 2560x1600 (I don't see the resolution in system preferences, just "Default for Display"). I have tried both screen-fullscreen = 0 and 1, and in both cases, the game's fullscreen checkbox has the correct resolution when not full screen, but the bad resolution when full screen. I have tried both 1600 and 1440 for the height. These are just the command line options in Epic, am I supposed to do something with the .sh file first?

Also, I can't be sure (can I?), but it seems like the game's loading screen is sharp and may be full-res, before it fully launches to the main menu and is low-res.

This is amazing - thank you so very much!