Survival means every man for himself.
Statistically more people survive if they think only of themselves.
Do not attempt to rescue friends, relatives, loved ones.

Best Use of Light and Spheres:

        Anders Gavare
        Gibraltargatan 82-156
        SE-412 79 Gothenburg
        Sweden

        http://www.mdstud.chalmers.se/~md1gavan/

Judges' Comments:

        To build:

        make gavare

        To run: ./gavare > ioccc_ray.ppm

        For users of systems that distinguish between text and binary mode
        (you know who you are), add a library call that specifies binary mode
        for stdout as the first statement of main(),
        or use freopen("ioccc_ray.ppm", "wb", stdout) and do not use redirection.

        A freely distributable command-line version of Microsoft Visual C
        exhibits an optimizer bug when compiling this entry. Disable /Og for
        best results.

        The judges were able to figure out how to control position
        (in all 3 coordinates), size, and color (to some extent) of the balls.

Selected Author's Comments:

        It is possible to write some kinds of programs in C without using reserved
        words. For very short and trivial programs, it usually isn't very hard to
        write a variant using no reserved words, but with this program I want to
        show that also non-trivial programs can be written this way. This IOCCC
        entry contains no reserved words (I don't count 'main' as a reserved word,
        although the compiler gives it special meaning) and no preprocessor
        directives.

        The program is a small ray-tracer. The first line of the source code may
        be modified if you want the resulting image to be of some other resolution
        than the predefined. The 'A' value is an anti-alias factor. Setting it to
        1 disables the anti-aliasing feature (this makes the output look bad), but
        setting it too high makes the trace take a lot more time to complete.

        The ppm image can then be viewed using an image viewer of your own choice.
        (Running the ray-tracer may take several minutes, even on fast machines,
        so be patient.)

        I am very much aware about the fact that I'm breaking the guidelines. For
        example, the word 'int' is a reserved word and therefore all variable
        declarations are implicit. There will no doubt be _lots_ of warnings,
        no matter which compiler is used. Still, the source code should be word-
        length-independent and endianess-independent.

        Another reason for writing code without using reserved words is that many
        text editors will make all reserved words turn BOLD when printed on
        paper. Since I care for the global environment, we shouldn't waste any
        more laser toner, or ink, than necessary. Everyone should write C code
        with no reserved words, and our world will be a better place.