camera movement
lerping can add better feeling of player movement
experienced issue with jitter between frames because lerping is a % of input leading to 1 frame pushing closer and the next frame pulling further. this can be smoothed out by applying the average over multiple frames.
camera should focus on either direction of velocity to help see objects ahead.
toggle mode: allow mouse pull camera in direction of cursor?
looks like this may solve some problems like constraints and keeping focus certain objects in frame https://www.gempukkustudio.com/libraries/gdx-gemp-lib.html
also see: https://www.youtube.com/watch?v=tu-Qe66AvtY
also see: https://www.youtube.com/watch?v=aAKwZt3aXQM
split screen technique implementation as described at 27:20 of Squirrel Eiserloh's 2016 GDC session:
https://github.com/Raxorg/Alejandria/blob/master/core/src/com/epicness/alejandria/showcase/modules/viewports/AdvancedSplitScreen.java