finished bullet collision detection, if everything is working the bullet should stop and explode on impact (or at least change color). Additionally there is also a range for the bullets now and all GameObject inheritants have to implement the function takeDamage, this way an attack can tell an object to fuck off and die
fixed errant method for propagation, also implemented a restraint for the bullet not to exit the boundaries
Merge branch 'master' of github.com:propra13-orga/gruppe13