Adding a set of input management functions.

Moving to a data structure for level data.

Whoops, forgot to add the level graphics. My mistake~

Less improved sprites, haha

"Improving" the graphics?

Restructuring assets folder

More work before rendering levels

Adding simple level assets

Adding basic player and tileset

Basic asset management functions

Adding player placeholder sprites

Stubbing out a player and world

Now we can exit with escape

Initial commit