Landon Curt Noll
ecabb73bf6
Added `bin/bin/tar-entry.sh` to build a compressed tarball for an entry. The compressed tarball is formed by gnu tar with options so that the same entry file content will always produce the same compressed tarball, byte for byte. As some files are missing from some entries, one should use the `-W` option as in: ```sh bin/tar-entry.sh -v 5 -W 2020/ferguson1 ``` Added `make form_entry_tarball` to the top level `Makefile` to build entry tarballs even when files are still missing. Added `make verify_entry_files` to verify that all entries have all of their files listed in their manifest, plus the top level ioccc.css and var.mk files. As file entry files are still missing (due to HTML files that need to be built), the overall `make quick_www` and `make www` do **NOT** (yet) exit when the `make verify_entry_files` fails. Improved `bin/chk-entry.sh` by removing some variables that were not needed. TODO: Improve `bin/` tool exit codes as the current use is a bit silly. TODO: Clean out some variables used in `bin/` tools as some of then are only set printed in debug statements. TODO: Clean up usage messages, some of the options listed to not match the `getopts(1)` parsing. In some cases the option needs to be parsed but needs to be ignored by the tool because another tool automatically passes along certain options that really have no effect. Such ignored options need to be show as "This option is ignored" in the usage message.
To build:
Before building, make sure that you have the OpenGL development libraries installed.
make
To use:
./vince
Try:
When running this in the program's window try hitting space a few times and see what happens!
Alternate code:
The vince.alt.c code of the submission will run on SGI IRIX and
also has the recursive CPP macro (which sneaked in accidentally) removed.
Alternate build:
To compile this alternate version:
make alt
Alternate use:
Use vince.alt as you would vince above.
Alternate try:
Try it just like vince as above.
Judges' remarks:
This beauteous entry makes use of visual {}s and whitespace to instruct the
OpenGL development libraries to create beauteous
visuals. Even hitting the space bar while the program runs produces a "spacey"
effect! :-)
NOTE: when hitting space bar make sure that the program window is in focus!
Challenge: Try modifying the texture to something of your own design.
Author's remarks:
ABUSE OF RULES
-
The executable needs to read in its own source code in order to run. As long as the source is in the same directory as the executable it should be able to find it...
-
The program requires the OpenGL library.
-
The program abuses severely the whitespace and
{ } ;exceptions in the file size limits.
Requirements
-
OpenGL. It works (slowly) with Mesa.
-
16bpp graphics capability (but might work at other depths)
-
The original source needs to be in the same directory as the executable, and the source's name should be the same as the executable but with
.con the end.
Background
I was annoyed after the last IOCCC because I slaved away on a clever text based game only to find all of the game winners used X11. X11 isn't standard C!
So to one up them, I decided to use OpenGL. It's standard, and most Unix-like systems these days have either accelerated graphics or else software rendering.
Obfuscation
It was a challenge getting the source code below the 2k limit. OpenGL has way
too many 'GRATUITOUSLY_LONG_CONSTANTS' and 'glLongStudlyFunctionNames();'.
Therefore, much of the obfuscation comes secondary to just reducing the code size to fit under the limit while still having some semblance of a demo.
There are some interesting abuses scattered about.
Usage
Try hitting the space bar when the program is running.
For Fun
Try modifying the texture to your own custom design...
Thanks
Many thanks to John Clemens for testing this on various machines for me.
Errors you can get
- 0 = no error.
- 1 = X problem.
- 2 = can't open GLX.
- 3 = can't open 16bpp visual.
- 4 = can't open source file.
Copyright and CC BY-SA 4.0 License:
This file is Copyright (c) 2023 by Landon Curt Noll. All Rights Reserved. You are free to share and adapt this file under the terms of this license:
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
For more information, see: https://creativecommons.org/licenses/by-sa/4.0/