l4kdead style lighting code.

Newbie & Debugging Questions
#1

Im looking for an l4kdead style lighting code. I know there was another post about it but it was never updated.

#2

You can download game source code here (scroll down): https://mojang.com/notch/j4k/l4kd/

#3

Ahh sorry forgot to say, I have a tiny clue about how it works but have no idea how to use it.