package Cribbage::Hand; use strict; use warnings; use constant SCORE => 0; use constant HAS_10 => 1; use constant CHK_FLSH => 2; my %prescore; { while () { chomp; my $temp = 'A8' x (length($_) / 8); for (unpack($temp, $_)) { my $hand = join ' ', map $_ eq 'T' ? 10 : $_, unpack('AAAAA', $_); my $flag = substr($_, 5, 1); my ($has_10, $chk_flsh) = $flag == 0 ? (0, 0) : $flag == 1 ? (1, 0) : $flag == 2 ? (0, 1) : (1, 1); my $score = sprintf("%d", substr($_, -2)); $prescore{$hand} = [$score, $has_10, $chk_flsh]; } } } my %val = ( A => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5, 6 => 6, 7 => 7, 8 => 8, 9 => 9, T => 10, J => 10, Q => 10, K => 10, ); my %ord = ( A => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5, 6 => 6, 7 => 7, 8 => 8, 9 => 9, T => 10, J => 11, Q => 12, K => 13, ); my %rev = reverse %ord; my %straight = (3 => \&straight_3, 4 => \&straight_4, 5 => \&straight_5); sub straight_3 { return (3, 0, 2) if $_[1] - $_[0] == 1 && $_[2] - $_[1] == 1; } sub straight_4 { return (4, 0, 3) if $_[1] - $_[0] == 1 && $_[2] - $_[1] == 1 && $_[3] - $_[2] == 1; return (3, 0, 2) if $_[1] - $_[0] == 1 && $_[2] - $_[1] == 1; return (3, 1, 3) if $_[2] - $_[1] == 1 && $_[3] - $_[2] == 1; } sub straight_5 { return (5, 0, 4) if $_[1] - $_[0] == 1 && $_[2] - $_[1] == 1 && $_[3] - $_[2] == 1 && $_[4] - $_[3] == 1; return (4, 0, 3) if $_[1] - $_[0] == 1 && $_[2] - $_[1] == 1 && $_[3] - $_[2] == 1; return (4, 1, 4) if $_[2] - $_[1] == 1 && $_[3] - $_[2] == 1 && $_[4] - $_[3] == 1; return (3, 0, 2) if $_[1] - $_[0] == 1 && $_[2] - $_[1] == 1; return (3, 1, 3) if $_[2] - $_[1] == 1 && $_[3] - $_[2] == 1; return (3, 2, 4) if $_[3] - $_[2] == 1 && $_[4] - $_[3] == 1; } sub score { my $str = shift; my %card; ++$card{$_} for unpack('AxAxAxAxAx', $str); my @by_val = sort {$a <=> $b} map { ($val{$_}) x $card{$_} } keys %card; my $info = $prescore{"@by_val"}; my $score = $info->[SCORE]; # If T/J/Q/K need to ... if ($info->[HAS_10]) { # Check for 2/3/4 of a kind $score += $_ * ($_ - 1) for values %card; # Check for straights my @val = sort {$a <=> $b} @ord{keys %card}; my ($len, $beg, $end) = $straight{@val}->(@val) if @val > 2; # my and if together if ($len) { $len *= $card{$rev{$_}} for @val[$beg .. $end] } $score += $len || 0; # Check for right jack my %jack = map { $_ => 1 } substr($str, 0, 8) =~ /(?<=J)(.)/g; ++$score if $jack{ substr($str, -1, 1) }; } # Check for flush if ($info->[CHK_FLSH]) { my %suit = map {$_ => undef} unpack('xAxAxAxA', $str); if (keys %suit == 1) { $score += 4; $score += 1 if substr($str, 1, 1) eq substr($str, -1, 1); } } return $score; } __DATA__ 11112012111130121111401211115012111160121111701211118012111190121111T30011122008 111230151112400611125006111260061112700611128006111290061112T3021113300811134006 11135006111360061113700611138006111390081113T30611144008111450061114600611147006 11148008111490121114T30611155008111560061115700811158012111590121115T30211166010 1116701211168012111690081116T3001117701411178008111790061117T3001118800811189006 1118T300111990081119T300111TT300112220081122301611224004112250041122600411227004 11228004112290061122T30411233016112342101123520811236208112372081123821011239212 1123T3041124400411245202112462021124720411248206112492061124T3041125500411256204 1125720611258206112592061125T302112660081126720611268206112692041126T30011277008 11278204112792021127T30011288004112892021128T300112990041129T300112TT30011333008 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