I was doing this for my dungeon designer because I wanted realistic light-flow. I came up with this "game" that uses a pen method. It runs quite fast considering all the processing it is doing each second. It has some minor physics bugs, but the light effect works perfectly. Impossible mode sends you back to the start when you hit a wall. The end is the green box. FULLSCREEN RECCOMENDED Controls: arrow keys to move Updates v1.0 - light effect v1.1 - player, controls, small maze v2.0 - bigger (practically impossible) maze v2.1 - timer, highscore v2.2 - light size v2.3 - impossible mode Tip: There are some glitchy areas, the light somehow knows where they are. If you see the light suddenly cut off like it's a dead end when you're pretty sure it's not, try carefully shifting around and it should go away.
The maze is from the internet, but everything else is by me.