Short: Agatunnel - hypnotic color cycling effects Author: ex-grahn@mdstud.chalmers.se (Jörgen Grahn) Uploader: ex-grahn mdstud chalmers se Type: demo/misc Architecture: m68k-amigaos Many years ago, when a friend of mine had convinced me to buy a used Amiga, I got my hands on a small program named Tunnel. It was originally a demo program for some Modula-2 system; thus source code in Modula-2 was included. The program was so cool, my brother and I used to turn off the light in the room and watch the psychedelic colours flickering by. The program didn't work on my new AGA Amiga - there was no synchronization and the colours shift much too fast. I wrote this quick hack to produce a similar effect, but enhanced to make use of all the 24 color bits of AGA. The 'tunnel' is a very simple effect, but it is cheaper than hallucinogen drugs - unless there are Psilocybin mushrooms growing where you live anyway ;-) On the other hand, watching ambient videos on MTV late at night is rather cheap too... As it is, AGATunnel will open a screen in the same resolution as the Workbench and make some simple colour cycling effects, giving the impression of a moving multi-color tunnel. Stop the program by feeding it a CONTROL-C signal (with the C:Break command for example). This is a quick hack, but it's fun to watch. Some caveats: It is 3.0-only, CLI/Shell-only and AGA-only The number of bitplanes and speed of the color cycling is hard-coded. If you want to change it, you have to recompile the program. The speed is hard-coded with respect to my own machine, an A4000/030. The effects _may_ look a bit strange in some screenmodes on A1200s and A4000s. I don't know. The program looks ugly while it draws the initial tunnel. Once again, this isn't high-quality software. The algorithms for generating the color sequence could be enhanced, giving a much cooler effect. This archive is in the Public Domain. Do what you want with it. Jörgen Grahn Wetterlinsgatan 13E S-521 34 Falköping SWEDEN