arrow keys to move the character space to drop/pick up lantern
A shadow demo made with pen raytracing, currently only works with circles and preset objects, since when i tried making it all purpose it was super slow (hence the "optimized" in the title). this draws the shadows instead of the light so technically its not how its supposed to be but it makes it much faster. number of pen strokes are determined by the distance between the lantern and the circle, sometimes you can see between them but i tried making it less noticeable. bouncing of the light is (for obvious reasons) not present
