A simulation of character movement, including the effects of gravity and friction on the character's current velocity. Feel free to remix or use the scripts in your own projects as needed. The scripts are currently a bit messy, but I plan to improve them and add features over time. Props go out to this article, which gave me most of the ideas for how to implement this. http://www.raywenderlich.com/15230/how-to-make-a-platform-game-like-super-mario-brothers-part-1
