Update: Lately I've been working on brick removal, which is almost finished. This will allow players to remove bricks they've already planted, and will spawn a temporary brick with physics enabled - which will have velocity applied to it, as if it was hammered.
I've also been messin' around with brick physics, just to get an idea of how they would work and to try out the physics engine. I just need to finish brick removal (which will later be used when the hammer tool is added), and the option to repaint planted bricks. I also need to finish the placeholder avatar and make a few other changes before the pre-alpha demo can be released.