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example/15.pl  view on Meta::CPAN

         (($j+1) + ($i*4) != $self->{board}->[$i]->[$j])) {
          return (1 + $self->{number_locked}, 1 + $self->{number_locked});
        }
      }
    }
    return (0,0);
  }

  sub next_moves {
    my $self = shift;
    my @moves;
    if ($self->{zero_at}->[0] > 0) {
      if (!(
       $self->{locked}->[$self->{zero_at}->[0]-1]->[$self->{zero_at}->[1]]
       ))
      {
        push @moves, [$self->{zero_at}->[0]-1,$self->{zero_at}->[1]];
      }
    }
    if ($self->{zero_at}->[0] < 3) {
      push @moves, [$self->{zero_at}->[0]+1,$self->{zero_at}->[1]];
    }
    if ($self->{zero_at}->[1] > 0) {
      if (!(
       $self->{locked}->[$self->{zero_at}->[0]]->[$self->{zero_at}->[1]-1]
       ))
      {
        push @moves, [$self->{zero_at}->[0],$self->{zero_at}->[1]-1];
      }
    }
    if ($self->{zero_at}->[1] < 3) {
      push @moves, [$self->{zero_at}->[0],$self->{zero_at}->[1]+1];
    }
    return @moves;
  }

  package main;
  use Algorithm::Search;
  my $puzzle = new fifteen;

  $puzzle->set_position(
'1 2 3 4
5 6 7 8
9 10 11 12
13 14 0 15');

  print "pvalue is ".$puzzle->value."\n";
  if (!($puzzle->distance_to_final_state)) {
    print "in final\n";
  }
  else {
    print "not in final\n";
  }

  my $fifteen_search = new Algorithm::Search();
  $fifteen_search->search({search_this=>$puzzle,
   solutions_to_find=>1,
   search_type => 'bfs'
  });
  print "Solution found :\n";
  use Data::Dumper;
  print Dumper($fifteen_search->path)."\n";

  $puzzle->set_position(
'10 12 7 3
5 13 8 4
9 11 2 0
15 14 1 6');

  print "pvalue is ".$puzzle->value."\n";
  $fifteen_search->search({search_this=>$puzzle,
   solutions_to_find=>1,
   search_type => 'bfs',
   do_not_repeat_values => 1,
   max_steps => 200000
  });
  print "Solution found :\n";
  use Data::Dumper;
  print Dumper($fifteen_search->path)."\n";