Quick answer: Physics! (well, kind of). You don't need knowledge of physics, but we do need a way to utilize it for our purposes, such as in detecting when objects (such as sprites) collide, and have ...

Cataclysm:Dark Days Ahead and the Ultimate Cataclysm tileset is the result of contributions from volunteers under the Creative Commons Attribution ShareAlike 3.0 license. The code and content of the ...