WARNING: Expect merge conflicts! This changes a line on nearly every
scene in existence.

However, it clears it all out for the future so we'll never have to deal
with it again.

Also allow 100 walls, and removal of all walls upon death

Godot is a pain with source control and sometimes you've just gotta have
a trash commit. This is it.

Also allows subsequent connections, but it's broken. Don't tell the git
gods that this commit is a lie

This reverts commit f41676c672.

I misunderstood the way the camera projections work, and I'm better off
using the original raycasting strategy.

Hero 1 fails, probably 0 too haven't checked though. Hero 2 is fine.
Haven't tested 3.

And Camera.project_ray_normal. This is much better