File Coverage

blib/lib/Game/Cribbage/Play.pm

Criterion	Covered	Total	%
statement	105	106	99.0
branch	26	28	92.8
condition	7	9	77.7
subroutine	15	15	100.0
pod	0	8	0.0
total	153	166	92.1

package Game::Cribbage::Play;

use strict;
use warnings;

use Object::Proto::Sugar -types;
use Game::Cribbage::Play::Card;
use Game::Cribbage::Play::Score;
use Game::Cribbage::Error;
use ntheory qw/forcomb vecsum/;

has [qw/id next_to_play/] => (
	is => 'rw',
);

has total => (
	is => 'rw',
	isa => Int,
	default => 0,
);

has [qw/cards scored/] => (
	is => 'rw',
	isa => ArrayRef,
	default => []
);

sub test_card {
	my ($self, $player, $card) = @_;

	my $total = $self->calculate_total([@{$self->cards}, $card], 0);

	if ($total > 31) {
		return Game::Cribbage::Error->new(
			message => 'Total count would be greater than 31 if ' . $card->stringify . ' was to be played',
			go => 1
		);
	}

	my $score = Game::Cribbage::Play::Score->new(
		player => $player,
		card => $card
	);

	$self->calculate_pair($score, $card);

	$self->calculate_run($score, $card);

	$total = $self->calculate_total([@{$self->cards}, $card], 0);

	$self->calculate_hits($score, $total);

	return $score->score;
}

sub card {
	my ($self, $player, $card) = @_;

	my $total = $self->calculate_total([@{$self->cards}, $card], 0);

	if ($total > 31) {
		return Game::Cribbage::Error->new(
			message => 'Total count would be greater than 31 if ' . $card->stringify . ' was to be played',
			go => 1
		);
	}

	my $score = Game::Cribbage::Play::Score->new(
		player => $player,
		card => $card
	);

	$self->calculate_pair($score, $card);

	$self->calculate_run($score, $card);

	push @{$self->cards}, Game::Cribbage::Play::Card->new(
		player => $player,
		card => $card
	);

	$total = $self->calculate_total($self->cards, 1);

	$self->calculate_hits($score, $total);

	if ($score->score) {
		push @{$self->scored}, $score;
	}
	return $score;
}

sub force_card {
	my ($self, $player, $card) = @_;

	for (@{$self->cards}) {
		if ($_->card->match($card)) {
			return 0;
		}
	}

	return $self->card($player, $card);
}


sub end_play {
	my ($self) = @_;

	return unless $self->cards->[0];

	my $score = Game::Cribbage::Play::Score->new(
		player => $self->cards->[-1]->player,
		card => $self->cards->[-1],
		go => 1
	);

	push @{$self->scored}, $score;

	return $score;
}

sub calculate_pair {
	my ($self, $score, $card) = @_;

	if ($self->cards->[-1] && $self->cards->[-1]->symbol eq $card->symbol) {
		if ($self->cards->[-2] && $self->cards->[-2]->symbol eq $card->symbol) {
			if ($self->cards->[-3] && $self->cards->[-3]->symbol eq $card->symbol) {
				$score->pair(3);
			} else {
				$score->pair(2);
			}
		} else {
			$score->pair(1);
		}
	}

	return 1;
}

sub calculate_run {
	my ($self, $score, $card) = @_;
	my @cards = map { $_->card } @{$self->cards};
	my @values = map { $_->run_value } (@cards, $card);
	my $length = scalar @values - 1;
	my $set = 5;
	for my $n (qw/6 5 4 3 2/) {
		my $match = $set--;
		next unless $n <= $length;
		my @new = sort { $a <=> $b } @values[$length - $n .. $length];
		my $first = $new[0];
		for (my $i = 1; $i <= $n; $i++) {
			$first = $first + 1;
			if ($first != $new[$i]) {
				$match = 0;
				$i = $n + 1;
			}
		}
		if ($match) {
			$score->run($match);
			last;
		}
	}

	return 1;
}

sub calculate_total {
	my ($self, $cards, $set) = @_;

	my $total = 0;
	for (@{ $cards }) {
		$total += $_->value;
	}
	if ($set) {
		$self->total($total);
	}

	return $total;
}

sub calculate_hits {
	my ($self, $score, $total) = @_;
	if ($total == 15) {
		$score->fifteen(1);
	} elsif ($total == 31) {
		$score->pegged(1);
		$score->go(1);
	}

	return 1;
}

1;