Added code to filter collisions based on a set of fixtures
refactor code in level1 class
more code to help with better collision detection
switched to using mass for collisions in level 1
Added joint code as comment for later use
Added prismatic button
Code clean up
Simple physcis puzzel for level 1
shifting mroe code to lua script
game logic for level 1
game logic for level 1
Slight fix to camera code and and added code to load entities from tmx map
basic level 1 done