Hungry Hungry Shark 0.3 (BETA)

update 0.3
- redesigned the antigravity controller(s)
- redesigned the propulsion fins
- filled the shark in
- basic swimming motion fins&tail
- increased the sharks speed/acceleration
- better breakthrough power
- better collision dectection with floor
- now it attacks robots on the 1st&3rd layers
- various uther under-the-hood changes


future updates:
- prevented stuff from getting stuck in its mouth
- now it roams when it finishs killing robots
- fix the bug that causes its head to fall apart
- maybe some lua water+more structures to destroy