todo: -[ ] store heightmap in some kind of structure somehow rather than lookup -[ ] maybe terrain chunks? -[ ] add buildings / cubes that project shadows -[ ] player attached torch
https://nalgebra.org/rustdoc/nalgebra/index.html
-- chromebook rust dev notes --
https://github.com/cdr/code-server <- install via yarn
need to mount stuff as executable
mount /tmp -o remount,exec
mount /home/chronos/user -o remount, exec