Destroyetor update: obstacles and physics engine

New Destroyetor update! This update brings a couple of features. First of all, obstacles have been added to the battlefield. Obstacles are indestructible and serve as a primarily mean to avoid enemy fire. Given the fact that collisions now had to be calculated against other enemies, battlefield walls AND obstacles, getting realistic (or simply non buggy) collision resolutions was not easy anymore, so the second addition has been the implementation of Box2D physics engine, and collisions are now working right.

The presence of a physics engine will enable us to add interesting features, like different mass to bodies of different size (a huge robot could crush opponents, move them against a wall or throwing them in a hole), bouncing bullets, explosions pushing nearby units away, etc. So I believe it was the right choice to make, also given the ease of integration with the game and our engine!

The current version of the game can be played here.