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pbot/lib/PBot/Plugin/Wordle.pm

402 lines
12 KiB
Perl

# File: Wordle.pm
#
# Purpose: Wordle game. Try to guess a word by submitting words for clues about
# which letters belong to the word.
# SPDX-FileCopyrightText: 2024 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT
package PBot::Plugin::Wordle;
use parent 'PBot::Plugin::Base';
use PBot::Imports;
sub initialize($self, %conf) {
$self->{pbot}->{commands}->add(
name => 'wordle',
help => 'Wordle game! Guess target word by submitting words for clues about which letters belong to the word!',
subref => sub { $self->wordle(@_) },
);
$self->{datadir} = $self->{pbot}->{registry}->get_value('general', 'data_dir');
}
sub unload($self) {
$self->{pbot}->{commands}->remove('wordle');
}
use constant {
USAGE => 'Usage: wordle start [length [wordlist]] | custom <word> <channel> [wordlist] | guess <word> | letters | show | giveup',
NO_WORDLE => 'There is no Wordle yet. Use `wordle start` to begin a game.',
DEFAULT_LENGTH => 5,
MIN_LENGTH => 3,
MAX_LENGTH => 22,
LETTER_CORRECT => 1,
LETTER_PRESENT => 2,
LETTER_INVALID => 3,
};
my %wordlists = (
default => '/wordle/american',
american => '/wordle/american',
insane => '/wordle/american-insane',
british => '/wordle/british',
canadian => '/wordle/canadian',
finnish => '/wordle/finnish',
french => '/wordle/french',
german => '/wordle/german',
italian => '/wordle/italian',
polish => '/wordle/polish',
spanish => '/wordle/spanish',
urban => '/wordle/urban',
);
my %accents = (
finnish => 'åäöšž',
french => 'éàèùçâêîôûëïü',
german => 'äöüß',
italian => 'èéìòù',
polish => 'ćńóśźżąęł',
spanish => 'áéíóúüñ',
);
my %color = (
correct => "\x0301,03",
correct_a => "\x0303,03",
present => "\x0301,07",
present_a => "\x0307,07",
invalid => "\x0301,15",
reset => "\x0F",
);
sub wordle($self, $context) {
my @args = $self->{pbot}->{interpreter}->split_line($context->{arguments});
my $command = shift @args;
if (not length $command) {
return USAGE;
}
my $channel = $context->{from};
given ($command) {
when ('show') {
if (not defined $self->{$channel}->{wordle}) {
return NO_WORDLE;
}
return $self->show_wordle($channel, 1);
}
when ('giveup') {
if (not defined $self->{$channel}->{wordle}) {
return NO_WORDLE;
}
my $wordle = join '', $self->{$channel}->{wordle}->@*;
$self->{$channel}->{wordle} = undef;
return "The word was $wordle. Better luck next time.";
}
when ('start') {
if (@args > 2) {
return "Invalid arguments; Usage: wordle start [word length [wordlist]]";
}
if (defined $self->{$channel}->{wordle} && $self->{$channel}->{correct} == 0) {
return "There is already a Wordle underway! Use `wordle show` to see the current progress or `wordle giveup` to end it.";
}
my $length = DEFAULT_LENGTH;
if (defined $args[0]) {
if ($args[0] !~ m/^[0-9]+$/ || $args[0] < MIN_LENGTH || $args[0] > MAX_LENGTH) {
return "Invalid word length `$args[0]`; must be integer >= ".MIN_LENGTH." and <= ".MAX_LENGTH.".";
}
$length = $args[0];
}
my $wordlist = $args[1] // 'default';
if (not exists $wordlists{$wordlist}) {
return 'Invalid wordlist; options are: ' . (join ', ', sort keys %wordlists);
}
return $self->make_wordle($channel, $length, undef, $wordlist);
}
when ('custom') {
if (@args < 2 || @args > 3) {
return "Usage: wordle custom <word> <channel> [wordlist]";
}
my $custom_word = $args[0];
my $custom_channel = $args[1];
my $custom_wordlist = $args[2];
my $length = length $custom_word;
if ($length < MIN_LENGTH || $length > MAX_LENGTH) {
return "Invalid word length; must be >= ".MIN_LENGTH." and <= ".MAX_LENGTH.".";
}
if (not $self->{pbot}->{channels}->is_active($custom_channel)) {
return "I'm not on that channel!";
}
if (defined $self->{$custom_channel}->{wordle} && $self->{$custom_channel}->{correct} == 0) {
return "There is already a Wordle underway! Use `wordle show` to see the current progress or `wordle giveup` to end it.";
}
my $wordlist = $custom_wordlist // 'default';
if (not exists $wordlists{$wordlist}) {
return 'Invalid wordlist; options are: ' . (join ', ', sort keys %wordlists);
}
$custom_word =~ s/ß/ẞ/g; # avoid uppercasing to SS in German
my $result = $self->make_wordle($custom_channel, $length, uc $custom_word, $wordlist);
if ($result !~ /Guess/) {
return $result;
}
my $botnick = $self->{pbot}->{registry}->get_value('irc', 'botnick');
my $message = {
nick => $botnick,
user => 'wordle',
host => 'localhost',
hostmask => "$botnick!wordle\@localhost",
command => 'wordle',
keyword => 'wordle',
checkflood => 1,
message => "$result (started by $context->{nick})",
};
$self->{pbot}->{interpreter}->add_message_to_output_queue($custom_channel, $message, 0);
return "Custom Wordle started!";
}
when ('guess') {
if (!@args || @args > 1) {
return "Usage: wordle guess <word>";
}
if (not defined $self->{$channel}->{wordle}) {
return NO_WORDLE;
}
if ($self->{$channel}->{correct}) {
return "Wordle already solved. " . $self->show_wordle($channel);
}
return $self->guess_wordle($channel, $args[0]);
}
when ('letters') {
if (@args > 1) {
return "Usage: wordle letters";
}
if (not defined $self->{$channel}->{wordle}) {
return NO_WORDLE;
}
return $self->show_letters($channel);
}
default {
return "Unknown command `$command`; " . USAGE;
}
}
}
sub load_words($self, $length, $wordlist = 'default') {
$wordlist = $self->{datadir} . $wordlists{$wordlist};
if (not -e $wordlist) {
die "Wordle database `" . $wordlist . "` not available. Set WORDLIST to a valid location of a wordlist file.\n";
}
open my $fh, '<:encoding(UTF-8)', $wordlist or die "Failed to open Wordle database.";
my %words;
while (my $line = <$fh>) {
chomp $line;
if (length $line == $length) {
$line =~ s/ß/ẞ/g; # avoid uppercasing to SS in German
$words{uc $line} = 1;
}
}
close $fh;
return \%words;
}
sub make_wordle($self, $channel, $length, $word = undef, $wordlist = 'default') {
eval {
$self->{$channel}->{words} = $self->load_words($length, $wordlist);
};
if ($@) {
return "Failed to load words: $@";
}
my @wordle;
if (defined $word) {
if (not exists $self->{$channel}->{words}->{$word}) {
return "I don't know that word.";
}
@wordle = split //, $word;
} else {
my @words = keys $self->{$channel}->{words}->%*;
@wordle = split //, $words[rand @words];
}
$self->{$channel}->{wordle} = \@wordle;
$self->{$channel}->{guess} = '';
$self->{$channel}->{correct} = 0;
$self->{$channel}->{guess_count} = 0;
$self->{$channel}->{letters} = {};
foreach my $letter ('A'..'Z') {
$self->{$channel}->{letters}->{$letter} = 0;
}
if (exists $accents{$wordlist}) {
foreach my $letter (split //, $accents{$wordlist}) {
$letter =~ s/ß/ẞ/g; # avoid uppercasing to SS in German
$letter = uc $letter;
$self->{$channel}->{letters}->{$letter} = 0;
}
}
$self->{$channel}->{guess} = $color{invalid};
$self->{$channel}->{guess} .= ' ? ' x $self->{$channel}->{wordle}->@*;
$self->{$channel}->{guess} .= $color{reset};
my $language = $wordlist;
$language = ucfirst $language;
$language = 'American' if $language eq 'Default';
return $self->show_wordle($channel) . " Guess the $language word! Legend: $color{invalid}X $color{reset} not in word; $color{present}X$color{present_a}?$color{reset} wrong position; $color{correct}X$color{correct_a}*$color{reset} correct position";
}
sub show_letters($self, $channel) {
my $result = 'Letters: ';
foreach my $letter (sort keys $self->{$channel}->{letters}->%*) {
if ($self->{$channel}->{letters}->{$letter} == LETTER_CORRECT) {
$result .= "$color{correct}$letter$color{correct_a}*";
$result .= "$color{reset} ";
} elsif ($self->{$channel}->{letters}->{$letter} == LETTER_PRESENT) {
$result .= "$color{present}$letter$color{present_a}?";
$result .= "$color{reset} ";
} elsif ($self->{$channel}->{letters}->{$letter} == 0) {
$result .= "$letter ";
}
}
return $result . "$color{reset}";
}
sub show_wordle($self, $channel, $with_letters = 0) {
if ($with_letters) {
return $self->{$channel}->{guess} . "$color{reset} " . $self->show_letters($channel);
} else {
return $self->{$channel}->{guess} . "$color{reset}";
}
}
sub guess_wordle($self, $channel, $guess) {
$guess =~ s/ß/ẞ/g; # avoid uppercasing to SS in German
$guess = uc $guess;
if (length $guess != $self->{$channel}->{wordle}->@*) {
my $guess_length = length $guess;
my $wordle_length = $self->{$channel}->{wordle}->@*;
return "Guess length ($guess_length) unequal to Wordle length ($wordle_length). Try again.";
}
if (not exists $self->{$channel}->{words}->{$guess}) {
return "I don't know that word. Try again."
}
$self->{$channel}->{guess_count}++;
my @guess = split //, $guess;
my @wordle = $self->{$channel}->{wordle}->@*;
my %count;
my %seen;
my %correct;
for (my $i = 0; $i < @wordle; $i++) {
$count{$wordle[$i]}++;
$seen{$wordle[$i]} = 0;
$correct{$wordle[$i]} = 0 unless exists $correct{$wordle[$i]};
if ($guess[$i] eq $wordle[$i]) {
$correct{$guess[$i]}++;
}
}
my $result = '';
my $correct = 0;
for (my $i = 0; $i < @wordle; $i++) {
if ($guess[$i] eq $wordle[$i]) {
$correct++;
$result .= "$color{correct} $guess[$i]$color{correct_a}*";
$self->{$channel}->{letters}->{$guess[$i]} = LETTER_CORRECT;
} else {
my $present = 0;
for (my $j = 0; $j < @wordle; $j++) {
if ($wordle[$j] eq $guess[$i]) {
if ($seen{$wordle[$j]} + $correct{$wordle[$j]} < $count{$wordle[$j]}) {
$present = 1;
}
$seen{$wordle[$j]}++;
last;
}
}
if ($present) {
$result .= "$color{present} $guess[$i]$color{present_a}?";
$self->{$channel}->{letters}->{$guess[$i]} = LETTER_PRESENT;
} else {
$result .= "$color{invalid} $guess[$i] ";
if ($self->{$channel}->{letters}->{$guess[$i]} == 0) {
$self->{$channel}->{letters}->{$guess[$i]} = LETTER_INVALID;
}
}
}
}
$self->{$channel}->{guess} = $result;
if ($correct == length $guess) {
$self->{$channel}->{correct} = 1;
my $guesses = $self->{$channel}->{guess_count};
return $self->show_wordle($channel) . " Correct in $guesses guess" . ($guesses != 1 ? 'es! ' : '! ');
} else {
return $self->show_wordle($channel, 1);
}
}
1;