Changed blocks to start at (0, 0) and go until (1, 1), rather than (0.5, 0.5) to (1.5, 1.5). Fixed block destruction. Some more proper physics is looking like it would be really nice at this point. Fixed #6.
Merge branch 'blocks' of github.com:crazy2be/buildshoot into blocks
Fixed a small bug with looked at block detection.