THREE is loaded in from the static/ folder, documentation here: ThreeJS docs
Basics:
Globals are defined in Constants.js
Game is actually a GameThree object... will fix that someday
Game.load creates a bunch of ThreeJS objects that get added to Game.scene (a THREE.Scene())
Game.update gets called on every animation frame, effectively 60x per second. dt parameter is number of seconds elapsed since the last animation frame. So moving forward Vector3(0, 0, 1) * dt effectively says "move forward 1 game unit per second".
Game.camera can move around the same way that any object can, except it also has directionality
I wrote a Keyboard handler that I can easily use to track if a key is down or not (has some bugs)
The part that really made me understand this is that everything is just handled 16ms at a time. Basically every 16ms you figure out what needs to change and then change it.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent