Have a look at these two fine resources. Rhys posted these great tutorials on the forum a few days back, one about shaders and one about matrices. I thought I’d mention them here as well.

Original posts: Shader tutorial , Matrix tutorial.

Thanks Rhys!

Here’s a usefull function to trim (remove leading and/or trailing spaces) a string

function trim (s)
	return (string.gsub(s, "^%s*(.-)%s*$", "%1"))
end

From gameplay, to presentation to input devices, videogames are a hotbed of innovation. Ernest Adams notes 50 game design innovations, some that have already made their impact, and others that will shape the future of the medium…

Article link

As you might know speed is a very importand issue for 3D engines, a good start for performance is to write highly optimized code. Here’s an article about how John Carmack uses a magic constant (0×5f3759df) to calculate an inverse square root. Article link

However interesting, the credits for this magic constant might not be Carmac’ but someone else’ as you can read in this post on beyond3D. A e-mail from the man himself actually confirms this.

For those of you using the firefox plugin to search the forums, there is a new version available which now searches the new forums.

It should update automatically but if this fails you could do the following:
Select “Manage Search Engines” from the search engine dropdown list, now delete the old “Quest3D|Forums” plugin. Now click here to download the latest version.