User since: Dec 30, 1999 at 08:39 UTC (25 years ago) Last here: Oct 31, 2017 at 21:33 UTC (7 years ago) Experience: 3503 Level: Curate (13) Writeups: 165 Location: Clearview Twp, ON, CDN Best Girl: Laurie Gene Pool Count: 7 URL Made in the Dark User's localtime: Jan 14, 2025 at 11:55 -04 Scratchpad: View For this user: Search nodes

These guys were really nice to me until I told them they weren't at Hooters.

Old fart coder, John MacDonald handed me the the Pink Camel book in 1991, bought my own have had a hump every since.

AI Competition -- 'The Learning Machine Challenge'
Sample Player

#!/usr/bin/perl -w
# rnd_player.pl - a random, game independent, challenge player
#
# This player can be used as an example for a rather generalized playe
+r.
# The player's logic is quite simple: it response to a request to play
+, 
# it emits a single symbol which is picked in random from the alphabet
# received from the game organizer (judge). The player logic ignores
# the score it receives during the game and contains with generating
# random moved until it is told by the organizer that the game is over
# The program also ignores any symbols it receives, which might be rel
+ated
# to the moves of other game participants.
#
# usage: invoke though a judge/game program. for debug, simple invoke 
+with 
#        command line arguments
#
## MitD 08/10/2001 - ported from tcl -> perl
#

use strict;
use Carp;
my $Version = "1.0";
my $Me = "MitD";
#
## we keep our game symbols in a global
#


my $DEBUG = 0;en
my @symbols = ();
my $score = 0;

$|++;
println ('@command info MitDRnd');
println( '# Made in the Dark');
println( '# Artificial Intelligence NV Challenge');
println ('# Player');
println( '# Copyright Peter G. Marshall');
println( '# This is free software; you can redistribute it');
println ('# and/or modify it under the same terms as Perl itself.');


while (<STDIN>) {
  chomp;
  process_line($_);
}

#
## input channel processor
#
sub chan_input {
  my $sym = shift;
}

#
## score channel processor
#
sub chan_score {
  my $arg = shift;
  $score += $arg;
} 

#
## command channel processor
#
sub chan_command {
  my ($verb, $args) = split(/ /,$_[0]);
  if (defined($args)) {
    eval "command_$verb(\"$args\")";
    croak "chan_command with args eval failed: $@\n" if ($@);
  } else {
    eval "command_$verb()";
    croak "process no  args \@ eval failed: $@\n" if ($@);
  }
}

#
## process  exit command
#
sub command_exit {
  exit;
}

#
## process symbol command
#
sub command_symbol {
  my $sym = shift;
   push(@symbols, $sym);
   debug ( "SYM: " . join(' ',@symbols) . "\n");
}

#
## process new game command
#
sub command_new {
  debug ("command new done");
  @symbols = ();
}

#
## process play command
#

sub command_play {
  my $sym = $symbols[rand scalar(@symbols)];
  println ("\@output $sym");
}

sub process_line {
  my $line  = shift;
  debug ("PL: $line");
  # ignore empty lines or lines that begin with # (commennts);
  return if ( length($line) == 0 or ($line =~ /^#/) );
  if ( index($line,'@') == -1) {
    eval "chan_input(\"$line\")";
    croak "process no  \@ eval failed: $@\n" if ($@);
  } else {
    $line = substr($line,1);
    my ($channel, $args) = split(/ /,$line,2);
    eval "&chan_$channel(\"$args\")";
    croak "process with \@ eval failed: $@\n" if ($@);
  }

}


sub println {
  print shift() . "\n";
}

sub debug {
  print STDERR $_[0],"\n" if $DEBUG;
}
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