Restructure everything as GamePieces
Restructure Farmer to use processGameTick()
Add "wall" to the ground, push the egg.
Clean out some unnecessary code.
Lay eggs!
Keep track of active eggs, add left wall.
Factor scale out of view classes.
Restructure GamePiece to use loadView()
Put the GamePiece UUID in the body user data.
Add method to search for game piece given UUID.
Hack in code to deactivate eggs.