Well, basically, what the title says!<p>I'm currently experimenting with RubyGame(self improvement and all that), as a Rails coder by trade, and I thought it would be interesting to see if there's any library that anyone knows of that does basic things for you (like combining movement vectors)?<p>I've got some fairly basic maths knowledge myself(maths/cs graduate), so I've got no problem writing all of that myself, but I'm always up for cheating and including a gem that extrapolates calculations for me :D.<p>I've done a quick google for solutions, but I'm interested in what people think!