Finally merged that.

Thanks to you and everyone for contribution. Seeing people care about this little project reminds me why I decided to do programming for a living.

As for the PRs, apparently I've slept through all the action =) I'll get back to them as soon as I can.

Actually I tried to do without true multidimensional arrays, but deleting and sorting elements would be a pain.

There is a great tutorial (it's actually a series of them) which I used: http://lodev.org/cgtutor/raycasting.html

It's old and C++ but explains raycasting very well.

And there is also a similar project in just 265 JS lines: http://www.playfuljs.com/a-first-person-engine-in-265-lines/

Thanks, I'll check it out.

I guess 20 years ago CS students weren't told to "write a Doom-like game" as an awk homework =)

.....where do you go to school and how many credits can you transfer in with? :p

Well, there were those bored days with a TI-83... shudders at TI-BASIC

My son spends a ton of his class time programming games into his TI-83. He even built his own Final Fantasy type game (when he really should have been doing classwork). He built a battle system, and even a merchant/vendor for buying upgrades. I had a lot of fun playing his game, and offered him some ideas for improvement (which, again, were made during class time).

And yet, I can't get him to sit down and put any time into programming on a computer. Sigh.

TI-BASIC is a blessing and a curse. You can get the most non-technical people to write code in it, but if you've had experience in a REAL language, you can't bring yourself to.