I am making a retro-style space shooter. The problem that I am having is that I am trying to keep the player ship from leaving the bounderies of the screen. The camera scrolls constantly forward, progressing the level, and the player moves with it. The camera is at a 45 degree angle downward giving some sort of forward visibility, I cannot use a physical border because I get odd bouncing behavior. I need a way to keep the player on screen.