Re: Raycasting 3D demo disk

["magnusfalkirk" <dean.phares@gmail.com>]

On Jan 17, 2:10 am, David Schmenk <dschm...@YUCH.gmail.com> wrote:
> Here for your enjoyment is a technology preview/demonstration of a
> raycasting and rendering algorithm I have developed as part of my Apple
> II 30th birthday-retro-game-just-because-I-can thing.  Reminiscent of
> Wolfenstein 3D, it runs on a standard 1 MHz 48K Apple II+ (or II w/
> Applesoft in RAM/ROM) or greater.  Only a joystick is required.  It is
> possible to run it on an emulator, but I highly recommend using real
> hardware with a color monitor.  Accelerators make it run too fast, so
> disable them if you want the controls to be sane.  I present it as a
> 140K DOS 3.3 disk image compressed with gzip.  Download with this URL:
>
> http://schmenk.is-a-geek.com/tarfiles/raydemo.dsk.gz
>
> I hope it doesn't end up being a bad idea placing a direct link, but its
> only 11K in size.
>
> Just a little background - I have a pile of algorithms I've been
> creating in my notebook for some time.  Some people like Soduku for
> their diversion, I like 6502 assembly language.  The 30th anniversary of
> the Apple II seemed like a good time to put some of them together.  Its
> always fun to make old (obsolete) hardware do things people don't
> expect.  In this case, a full screen 3D walkthrough.  However, don't
> think I've made an Apple II perform like NVIDIA's latest GPU.  In order
> to get interactive framerates and decent colors, the lo-res graphics
> mode is employed.  I am not double buffering the rendering - you see it
> as it renders.  Textures are only 16x16, and there are only 15 of them.
>   It would have seemed pretty cool back in 1977 though.
>
> Download it, give it a try, let me know what you think.  I hope to have
> an actual game to play with a geekly humorous story-line in a few months
> based on this technology.
>
> Dave...

Greetings,

I'm not sure if I'm doing something wrong or not. I've downloaded the
3d demo and it runs fine on the Apple II emulators I have on my Mac.
But when I transfer it to an actual disk and try to run it on my IIe
it crashes in machine language. Any ideas?

Thanks,
Dean