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lib/AI/Pathfinding/OptimizeMultiple/IterState.pm  view on Meta::CPAN

package AI::Pathfinding::OptimizeMultiple::IterState;
$AI::Pathfinding::OptimizeMultiple::IterState::VERSION = '0.0.17';
use strict;
use warnings;

use 5.012;

use MooX qw/late/;

use PDL ();

use vars (qw(@fields));

has _main => ( is => 'rw' );
has _num_solved =>
    ( isa => 'Int', is => 'ro', init_arg => 'num_solved', required => 1 );
has _quota => ( isa => 'Int', is => 'ro', init_arg => 'quota', required => 1 );
has _scan_idx =>
    ( isa => 'Int', is => 'ro', init_arg => 'scan_idx', required => 1 );

use Exception::Class ('AI::Pathfinding::OptimizeMultiple::Error::OutOfQuotas');

sub attach_to
{
    my $self     = shift;
    my $main_obj = shift;

    $self->_main($main_obj);

    return;
}

sub get_chosen_struct
{
    my $self = shift;
    return $self->_main->_calc_chosen_scan( $self->_scan_idx, $self->_quota );
}

sub detach
{
    my $self = shift;
    $self->_main(undef);
}

sub idx_slice
{
    my $self = shift;

    my $scans_data = $self->_main()->_scans_data();

    my @dims = $scans_data->dims();

    return $scans_data->slice(
        join( ",", ":", $self->_scan_idx(), ( ("(0)") x ( @dims - 2 ) ) ) );
}

sub update_total_iters
{
    my $state = shift;

    # $r is the result of this scan.
    my $r = $state->idx_slice();

    # Add the total iterations for all the states that were solved by
    # this scan.
    $state->_main()
        ->_add_to_total_iters(
        PDL::sum( ( ( $r <= $state->_quota() ) & ( $r > 0 ) ) * $r ) );

    # Find all the states that weren't solved.
    my $indexes = PDL::which( ( $r > $state->_quota() ) | ( $r < 0 ) );

    # Add the iterations for all the states that have not been solved
    # yet.
    $state->_main()
        ->_add_to_total_iters( $indexes->nelem() * $state->_quota() );

    # Keep only the states that have not been solved yet.
    $state->_main()
        ->_scans_data(
        $state->_main()->_scans_data()->dice( $indexes, "X" )->copy() );
}

sub update_idx_slice
{
    my $state = shift;
    my $r     = $state->idx_slice()->copy();

    # $r cannot be 0, because the ones that were 0, were already solved
    # in $state->update_total_iters().
    my $idx_slice = $state->idx_slice();
    $idx_slice .=
        ( ( $r > 0 ) * ( $r - $state->_quota() ) ) + ( ( $r < 0 ) * ($r) );
}

sub _mark_as_used
{
    my $state = shift;

    $state->_main()->_selected_scans()->[ $state->_scan_idx() ]->mark_as_used();

    return;
}

sub _add_chosen
{
    my $state = shift;

    push @{ $state->_main()->chosen_scans() }, $state->get_chosen_struct();

    return;
}

sub _update_total_boards_solved
{
    my $state = shift;

    $state->_main()->_add_to_total_boards_solved( $state->_num_solved() );

    return;
}

sub _trace_wrapper
{
    my $state = shift;

    $state->_main()->_trace(
        {
            'iters_quota'         => $state->_quota(),
            'selected_scan_idx'   => $state->_scan_idx(),
            'total_boards_solved' => $state->_main()->_total_boards_solved(),
        }
    );

    return;
}

sub register_params
{
    my $state = shift;

    $state->_add_chosen();
    $state->_mark_as_used();
    $state->_update_total_boards_solved();
    $state->_trace_wrapper();

    return;
}

1;

__END__

=pod

=encoding UTF-8

=head1 NAME

AI::Pathfinding::OptimizeMultiple::IterState - iteration state object.

=head1 VERSION

version 0.0.17

=head1 SUBROUTINES/METHODS

=head2 $self->attach_to()

Internal use.

=head2 $self->get_chosen_struct()

Internal use.

=head2 $self->detach()

Internal use.

=head2 $self->idx_slice()

Internal use.

=head2 $self->update_total_iters()

Internal use.

=head2 $self->update_idx_slice()

Internal use.

=head2 $self->register_params()

Internal use.

=for :stopwords cpan testmatrix url bugtracker rt cpants kwalitee diff irc mailto metadata placeholders metacpan

=head1 SUPPORT

=head2 Websites

The following websites have more information about this module, and may be of help to you. As always,
in addition to those websites please use your favorite search engine to discover more resources.

=over 4

=item *

MetaCPAN

A modern, open-source CPAN search engine, useful to view POD in HTML format.

L<https://metacpan.org/release/AI-Pathfinding-OptimizeMultiple>

=item *

RT: CPAN's Bug Tracker

The RT ( Request Tracker ) website is the default bug/issue tracking system for CPAN.

L<https://rt.cpan.org/Public/Dist/Display.html?Name=AI-Pathfinding-OptimizeMultiple>

=item *

CPANTS

The CPANTS is a website that analyzes the Kwalitee ( code metrics ) of a distribution.

L<http://cpants.cpanauthors.org/dist/AI-Pathfinding-OptimizeMultiple>

=item *

CPAN Testers

The CPAN Testers is a network of smoke testers who run automated tests on uploaded CPAN distributions.

L<http://www.cpantesters.org/distro/A/AI-Pathfinding-OptimizeMultiple>

=item *

CPAN Testers Matrix

The CPAN Testers Matrix is a website that provides a visual overview of the test results for a distribution on various Perls/platforms.

L<http://matrix.cpantesters.org/?dist=AI-Pathfinding-OptimizeMultiple>

=item *

CPAN Testers Dependencies

The CPAN Testers Dependencies is a website that shows a chart of the test results of all dependencies for a distribution.

L<http://deps.cpantesters.org/?module=AI::Pathfinding::OptimizeMultiple>

=back