New Javascript Raycasting Engine #1

Working on a new raycasting engine in pure JavaScript, no libraries. Prior to this, I have used three.js and WebGL to make games like Death 3D, but I wanted to make one using just the 2D canvas and no libraries. So far supports floor/ceiling casting, minor lighting effects, and animated tiles. Running at 60FPS currently, although not at native resolution (scaled from vertical resolution of 480px).

You can see the progress here:
https://www.apewebapps.com/cast22-demo/