Thank you playing! The distribution of enemies I think is pretty simple, you see...
We got two rows: the first one and the second. They are affected by the player's rotation so basically they're always in front of him outside the camera. When it is time for a hazard to spawn it picks a row and picks a random point to spawn on. We need two rows as some objects (Meteors) might spawn so big that they can be seen appearing on the camera edges.
If you want to go more in depth visit the github's scripts/systems folder and look for the random gen script
