burger zombie game prototype

Very early prototype for a zombie game I'm making. It's really bugged, and I just want to get some suggestions. As you can tell, I'm totally a pro game developer.

Controls:

• Press B to build.
• Use the number keys to select a building object. There are three objects: barricade, door (currently non-functional), and pillar.

Gameplay:

• You can sleep to advance time. Each day you sleep, the zombie spawn rate will increase by 3 seconds.
• Build strategically to defend yourself from the increasing horde of zombies.

Current Issues:

• The door object is not functional yet.
• Various bugs and glitches are present.
• And you cant take damage.