Sight & Light

[Tanner]

I really liked this article about rendering with simple and fast ray intersection logic. So I decided to port the ray logic into a really lightweight object. There are number of raycasting implementations for Lua out there but most of them have a lot of dependencies. This implementation only depends on vrld's vector class (and that's really just for convenience).

Here's line.lua: https://gist.github.com/TannerRogalsky/9724785

You can see some of the applications in that original blog post or you can download my Love2D proof of concept below or you can check out my code.

[Satinxs]

Dude this is awesome! I'll definitely try it and see if I can implement the same shadow and image superposition the original author does! Thanks for sharing!

[kikito]

I am afraid I see some random errors on your implementation. Here are a couple screnshots (the cursor doesn't show, but it is always in the "vertex" of the "error black triangle":

Screen Shot 2014-03-29 at 16.10.33 .png (18.34 KiB) Viewed 1612 times

Screen Shot 2014-03-29 at 16.11.46 .png (17.45 KiB) Viewed 1612 times