background layer building

It's been a while. I've sort of finished the ability to build walls in the background.

pic is zoomed out.

Small stuff

I've done a few small things, including:

Basic lighting for entities. You can see the crates get darker as they're farther from the light source.

Basic grid (snapping) for entity placement. The transparent block is what's being placed (cursor removed from snapshot).

More stuff

Added more stuff to build with as tests; not very pretty, but it's something.

Lighting still has issues as can be seen here.
I'd like to add tools/options to make building easier, such as:

1. Make position adjustments
2. Rotate
3. Align with different objects
4. Align with terrain
5. Snap to grid

Earthformer player animation and torches

There's still some bugs in lighting and I think I'm starting to get lazier in code organization which really worries me.