Game Dev Movement Cheatsheet with Examples, by Jason Brown

Game Dev Movement Cheatsheet
Somethinghitme blog

This is a pretty great little article of tricks to get fluid movement in your games. Jason Brown works primarily in Javascript, but his examples are well-explained and pretty language-generic.

His whole blog is full of small, straightforward tutorials like this one as well, as well as some more advanced ones.

(via /r/gamedev)