Fixed broken fatometer
Fixed fat o meter again
so the maze in tower defense works now

- enemy will trying to move to next target but if the got block, they
will becom angry and kill every tower nearby
- increase the damage of enemies to maike them destroy your tower with
one hit
- i think the knock back arrow is kind of imba now if theres maze
Merge pull request #167 from XavierCHN/master

so the maze work now