Files
ioccc/1998/dloweneil

Most Fun:

David Lowe				Neil Mix
Pootpoot				Pootpoot
67-D Manchester Street		1490 Sacramento Street #4G
San Francisco, CA 94110		San Francisco, CA 94110
USA					USA

http://pootpoot.com/

Judge's Comments:

To build:

make dloweneil

To use:

./dloweneil

Read the Author's comments below.  We believe that your experience may
mirror one of our experiences:

Originally, I didn't appreciate the game.  Then I actually read the
description of the controls.  I started playing.  I struggled.
I spelled my first "poot".  I was hooked ...

Selected Author's comments:

Usage:
pootris [X size of board] [Y size of board]

Synopsis:
 The object of this game is to spell "POOT" as much as possible.  There
 is no time pressure.  You're given one letter at a time (sort of randomly
 chosen from the set 'P', 'O', and 'T') and you get to move it freely
 around the border of the playing board, and decide when and where to drop
 it into the board.  Sound easy?  Of course, there's a catch...

Controls:
 . Only three controls:
    'a' moves the current letter one position counterclockwise around
        the border of the playing field.
    's' moves the current letter one position clockwise around the border
        of the playing field.
    'd' drops the current letter onto the board.
 . To quit, send a fatal signal to the process.

Rules of motion:
 . The different letters move in different directions once dropped onto
   the board:
    'P' moves diagonally, at a 45 degree angle and in a clockwise
        direction around the board once dropped.
    'O' moves in a straight line perpendicular to the border from which
        it is dropped.
    'T' moves diagonally, at a 45 degree angle and in a counterclockwise
        direction around the board once dropped.
 . The letters bounce off the top and sides of the board.  They bounce
   in a 'natural' way, with the exception that 'O's will fall straight
   down if they hit a side wall.
 . The letters stop when they hit another letter or the bottom of the
   board.

Rules of spelling:
 . When you spell 'POOT' on the board, in any direction, the letters
   comprising the word will disappear, and any letters which may have
   accumulated above the disappeared letters will 'fall'.
 . Letters can be used in multiple spellings of 'POOT'.
 . Chain reactions are possible.

Rules of scoring:
 . You get one (1) point for each letter you drop onto the board.
 . You get a bunch of points for spelling 'POOT'.  More if you spell
   it in more than one way simultaneously.

Some of the obfuscations:
 . Several different coordinate systems are used.  There's the "real" X
   by Y system used for curses, the "inside the box" X by Y system used
   for moving things around and finding instances of "POOT" inside the
   box, and the position of the current letter, which is a single value
   from 0 to 2 * xsize + 2 * ysize - 1.
 . The fact that x%3 is a perfect hash function for x values 'P', 'O'
   and 'T' is used.
 . Of course, the code is as hideous as possible, and spells poot for
   fun (It's also exactly 3217 bytes in length, with exactly 1536
   counted characters for purposes of this contest.)
 . Love that modulus operator!  Mmmm...
 . There are some equations used which are really unnecessarily ugly,
   which served the dual purposes of compacting the code and making it
   trickier to understand.  I'm thinking of the equations used to convert
   between coordinate systems when dropping pieces into the game board.
 . Simple and silly ones: short, meaningless (and sometimes misleading
   (see 'x')) variable names; hard-coded ASCII numeric values used for
   character constants; using goto for fun and profit; reusing and
   re-purposing variables in different places.
 . The game itself is simple, but still weird and quite difficult.

Some things I wish I could have fit into this, but didn't have the space:
 . Seeding the random number generator (doh!)
 . Something to detect when the game is over.
 . Some kind of scoreboard.
 . Sound.
 . Some way of quitting gracefully.

Good Luck!