Tank Progress

Between E3 and the host of other personal stuff to do, I've not had as much time to do Game Gen as usual. Currently I have a rough wall set up as well as the tanks placed, but for some reason the rotating seems to be broken - the code is basically identical but opposite for both left and right turning, yet the tank only wants to rotate left. Besides this, I need to work out the hitboxes so there's not "videogame sprite overlap"; if I could I'd consider having the tanks "bounce" whenever you hit a wall. Should make the background a different color, or possibly make it a JPEG, et al. depending on what's fair use. Barring unusual obstacles, my current goal is have an uploaded/completed Tank game by next portfolio showcase.