Posted on October 30, 2011
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A while back, I posted a postmortem for my game, Lucky Shot. In it, I mentioned that one of the aspects that was most well-received was the AI. I myself found this amusing — while it was a good system, it was incredibly simple, only a small step above the enemies you see in a game like Super Mario Bros. So how did the enemies move so smoothly? A lot of it has to do with the movement system, and that’s what I’m going to cover in this article. Before I get started, though, I’d just like to say that this likely won’t be anything new to anyone who’s programmed a physics system in a game before — in fact, if you have, you will likely see this as overly basic. And it is. This is meant more as a beginner’s introduction and as a showcase on how some very simple ideas can lead to some very nice behaviour. It does, however, require some knowledge of high-school level math and physics.