Shadows and Lights Step 2

See [link]

Controls:
WASD, IJKL, Arrow keys.

I optimized a ton of stuff, and fixed a ton of glitches, and I discovered that 2 lights yields a perfect 30 fps, but 3 lights starts to bog it down (seen here). I also updated the algorithm for working with light and shadow. I still need a better method...

I average about 27 fps...