# analysis, or for live analysis of relayed games. (Do not use for
# cheating! Cheating is bad for your karma, and your abuser flag.)
#
-# Copyright 2007 Steinar H. Gunderson <sgunderson@bigfoot.com>
+# Copyright 2007 Steinar H. Gunderson <steinar+remoteglot@gunderson.no>
# Licensed under the GNU General Public License, version 2.
#
+use AnyEvent;
+use AnyEvent::Handle;
+use AnyEvent::HTTP;
+use Chess::PGN::Parse;
+use EV;
use Net::Telnet;
-use FileHandle;
+use File::Slurp;
use IPC::Open2;
use Time::HiRes;
use JSON::XS;
+use URI::Escape;
+use DBI;
+use DBD::Pg;
require 'Position.pm';
require 'Engine.pm';
+require 'config.pm';
use strict;
use warnings;
-
-# Configuration
-my $server = "freechess.org";
-my $target = "GMCarlsen";
-my $engine_cmdline = "'./Deep Rybka 4 SSE42 x64'";
-my $engine2_cmdline = "./stockfish_13111119_x64_modern_sse42"; # undef for none
-my $uci_assume_full_compliance = 0; # dangerous :-)
-my $update_max_interval = 1.0;
-my @masters = (
- 'Sesse',
- 'Sessse',
- 'Sesssse',
- 'greatestguns',
- 'beuki'
-);
+no warnings qw(once);
# Program starts here
-$SIG{ALRM} = sub { output(); };
my $latest_update = undef;
+my $output_timer = undef;
+my $http_timer = undef;
+my $stop_pgn_fetch = 0;
+my $tb_retry_timer = undef;
+my %tb_cache = ();
+my $tb_lookup_running = 0;
+my $last_written_json = undef;
+
+# Persisted so we can restart.
+# TODO: Figure out an appropriate way to deal with database restarts
+# and/or Postgres going away entirely.
+my $dbh = DBI->connect($remoteglotconf::dbistr, $remoteglotconf::dbiuser, $remoteglotconf::dbipass)
+ or die DBI->errstr;
+$dbh->{RaiseError} = 1;
$| = 1;
print UCILOG "Log starting.\n";
select(UCILOG);
$| = 1;
+
+open(TBLOG, ">tblog.txt")
+ or die "tblog.txt: $!";
+print TBLOG "Log starting.\n";
+select(TBLOG);
+$| = 1;
+
select(STDOUT);
+umask 0022;
# open the chess engine
-my $engine = open_engine($engine_cmdline, 'E1');
-my $engine2 = open_engine($engine2_cmdline, 'E2');
+my $engine = open_engine($remoteglotconf::engine_cmdline, 'E1', sub { handle_uci(@_, 1); });
+my $engine2 = open_engine($remoteglotconf::engine2_cmdline, 'E2', sub { handle_uci(@_, 0); });
my $last_move;
my $last_text = '';
my ($pos_waiting, $pos_calculating, $pos_calculating_second_engine);
uciprint($engine, "setoption name UCI_AnalyseMode value true");
-# uciprint($engine, "setoption name NalimovPath value /srv/tablebase");
-uciprint($engine, "setoption name NalimovUsage value Rarely");
-uciprint($engine, "setoption name Hash value 1024");
-# uciprint($engine, "setoption name MultiPV value 2");
+while (my ($key, $value) = each %remoteglotconf::engine_config) {
+ uciprint($engine, "setoption name $key value $value");
+}
uciprint($engine, "ucinewgame");
if (defined($engine2)) {
uciprint($engine2, "setoption name UCI_AnalyseMode value true");
- # uciprint($engine2, "setoption name NalimovPath value /srv/tablebase");
- uciprint($engine2, "setoption name NalimovUsage value Rarely");
- uciprint($engine2, "setoption name Hash value 1024");
- uciprint($engine2, "setoption name Threads value 8");
+ while (my ($key, $value) = each %remoteglotconf::engine2_config) {
+ uciprint($engine2, "setoption name $key value $value");
+ }
uciprint($engine2, "setoption name MultiPV value 500");
uciprint($engine2, "ucinewgame");
}
# now talk to FICS
my $t = Net::Telnet->new(Timeout => 10, Prompt => '/fics% /');
$t->input_log(\*FICSLOG);
-$t->open($server);
-$t->print("SesseBOT");
+$t->open($remoteglotconf::server);
+$t->print($remoteglotconf::nick);
$t->waitfor('/Press return to enter the server/');
$t->cmd("");
$t->cmd("set shout 0");
$t->cmd("set seek 0");
$t->cmd("set style 12");
-$t->cmd("observe $target");
-
-# main loop
-print "FICS ready.\n";
-while (1) {
- my $rin = '';
- my $rout;
- vec($rin, fileno($engine->{'read'}), 1) = 1;
- if (defined($engine2)) {
- vec($rin, fileno($engine2->{'read'}), 1) = 1;
- }
- vec($rin, fileno($t), 1) = 1;
-
- my ($nfound, $timeleft) = select($rout=$rin, undef, undef, 5.0);
- my $sleep = 1.0;
-
- while (1) {
- my $line = $t->getline(Timeout => 0, errmode => 'return');
- last if (!defined($line));
-
- chomp $line;
- $line =~ tr/\r//d;
- if ($line =~ /^<12> /) {
- my $pos = Position->new($line);
-
- # if this is already in the queue, ignore it
- next if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
-
- # if we're already chewing on this and there's nothing else in the queue,
- # also ignore it
- next if (!defined($pos_waiting) && defined($pos_calculating) &&
- $pos->fen() eq $pos_calculating->fen());
-
- # if we're already thinking on something, stop and wait for the engine
- # to approve
- if (defined($pos_calculating)) {
- if (!defined($pos_waiting)) {
- uciprint($engine, "stop");
- }
- if ($uci_assume_full_compliance) {
- $pos_waiting = $pos;
- } else {
- uciprint($engine, "position fen " . $pos->fen());
- uciprint($engine, "go infinite");
- $pos_calculating = $pos;
- }
- } else {
- # it's wrong just to give the FEN (the move history is useful,
- # and per the UCI spec, we should really have sent "ucinewgame"),
- # but it's easier
- uciprint($engine, "position fen " . $pos->fen());
- uciprint($engine, "go infinite");
- $pos_calculating = $pos;
- }
- if (defined($engine2)) {
- if (defined($pos_calculating_second_engine)) {
- uciprint($engine2, "stop");
- } else {
- uciprint($engine2, "position fen " . $pos->fen());
- uciprint($engine2, "go infinite");
- $pos_calculating_second_engine = $pos;
- }
- $engine2->{'info'} = {};
- }
-
- $engine->{'info'} = {};
- $last_move = time;
-
- #
- # Output a command every move to note that we're
- # still paying attention -- this is a good tradeoff,
- # since if no move has happened in the last half
- # hour, the analysis/relay has most likely stopped
- # and we should stop hogging server resources.
- #
- $t->cmd("date");
+my $ev1 = AnyEvent->io(
+ fh => fileno($t),
+ poll => 'r',
+ cb => sub { # what callback to execute
+ while (1) {
+ my $line = $t->getline(Timeout => 0, errmode => 'return');
+ return if (!defined($line));
+
+ chomp $line;
+ $line =~ tr/\r//d;
+ handle_fics($line);
}
- if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
- my ($who, $msg) = ($1, $2);
-
- next if (grep { $_ eq $who } (@masters) == 0);
-
- if ($msg =~ /^fics (.*?)$/) {
- $t->cmd("tell $who Executing '$1' on FICS.");
- $t->cmd($1);
- } elsif ($msg =~ /^uci (.*?)$/) {
- $t->cmd("tell $who Sending '$1' to the engine.");
- print { $engine->{'write'} } "$1\n";
- } else {
- $t->cmd("tell $who Couldn't understand '$msg', sorry.");
- }
- }
- #print "FICS: [$line]\n";
- $sleep = 0;
}
-
- # any fun on the UCI channel?
- if ($nfound > 0 && vec($rout, fileno($engine->{'read'}), 1) == 1) {
- my @lines = $engine->read_lines();
- for my $line (@lines) {
- next if $line =~ /(upper|lower)bound/;
- handle_uci($engine, $line, 1);
- }
- $sleep = 0;
-
- output();
- }
- if (defined($engine2) && $nfound > 0 && vec($rout, fileno($engine2->{'read'}), 1) == 1) {
- my @lines = $engine2->read_lines();
- for my $line (@lines) {
- next if $line =~ /(upper|lower)bound/;
- handle_uci($engine2, $line, 0);
- }
- $sleep = 0;
-
- output();
+);
+if (defined($remoteglotconf::target)) {
+ if ($remoteglotconf::target =~ /^http:/) {
+ fetch_pgn($remoteglotconf::target);
+ } else {
+ $t->cmd("observe $remoteglotconf::target");
}
-
- sleep $sleep;
}
+print "FICS ready.\n";
+
+# Engine events have already been set up by Engine.pm.
+EV::run;
sub handle_uci {
my ($engine, $line, $primary) = @_;
- chomp $line;
- $line =~ tr/\r//d;
+ return if $line =~ /(upper|lower)bound/;
+
$line =~ s/ / /g; # Sometimes needed for Zappa Mexico
print UCILOG localtime() . " $engine->{'tag'} <= $line\n";
if ($line =~ /^info/) {
}
if ($line =~ /^bestmove/) {
if ($primary) {
- return if (!$uci_assume_full_compliance);
+ return if (!$remoteglotconf::uci_assume_full_compliance);
if (defined($pos_waiting)) {
uciprint($engine, "position fen " . $pos_waiting->fen());
uciprint($engine, "go infinite");
$pos_calculating_second_engine = $pos;
}
}
+ output();
+}
+
+my $getting_movelist = 0;
+my $pos_for_movelist = undef;
+my @uci_movelist = ();
+my @pretty_movelist = ();
+
+sub handle_fics {
+ my $line = shift;
+ if ($line =~ /^<12> /) {
+ handle_position(Position->new($line));
+ $t->cmd("moves");
+ }
+ if ($line =~ /^Movelist for game /) {
+ my $pos = $pos_waiting // $pos_calculating;
+ if (defined($pos)) {
+ @uci_movelist = ();
+ @pretty_movelist = ();
+ $pos_for_movelist = Position->start_pos($pos->{'player_w'}, $pos->{'player_b'});
+ $getting_movelist = 1;
+ }
+ }
+ if ($getting_movelist &&
+ $line =~ /^\s* \d+\. \s+ # move number
+ (\S+) \s+ \( [\d:.]+ \) \s* # first move, then time
+ (?: (\S+) \s+ \( [\d:.]+ \) )? # second move, then time
+ /x) {
+ eval {
+ my $uci_move;
+ ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($1);
+ push @uci_movelist, $uci_move;
+ push @pretty_movelist, $1;
+
+ if (defined($2)) {
+ ($pos_for_movelist, $uci_move) = $pos_for_movelist->make_pretty_move($2);
+ push @uci_movelist, $uci_move;
+ push @pretty_movelist, $2;
+ }
+ };
+ if ($@) {
+ warn "Error when getting FICS move history: $@";
+ $getting_movelist = 0;
+ }
+ }
+ if ($getting_movelist &&
+ $line =~ /^\s+ \{.*\} \s+ (?: \* | 1\/2-1\/2 | 0-1 | 1-0 )/x) {
+ # End of movelist.
+ for my $pos ($pos_waiting, $pos_calculating) {
+ next if (!defined($pos));
+ if ($pos->fen() eq $pos_for_movelist->fen()) {
+ $pos->{'pretty_history'} = \@pretty_movelist;
+ }
+ }
+ $getting_movelist = 0;
+ }
+ if ($line =~ /^([A-Za-z]+)(?:\([A-Z]+\))* tells you: (.*)$/) {
+ my ($who, $msg) = ($1, $2);
+
+ next if (grep { $_ eq $who } (@remoteglotconf::masters) == 0);
+
+ if ($msg =~ /^fics (.*?)$/) {
+ $t->cmd("tell $who Executing '$1' on FICS.");
+ $t->cmd($1);
+ } elsif ($msg =~ /^uci (.*?)$/) {
+ $t->cmd("tell $who Sending '$1' to the engine.");
+ print { $engine->{'write'} } "$1\n";
+ } elsif ($msg =~ /^pgn (.*?)$/) {
+ my $url = $1;
+ $t->cmd("tell $who Starting to poll '$url'.");
+ fetch_pgn($url);
+ } elsif ($msg =~ /^stoppgn$/) {
+ $t->cmd("tell $who Stopping poll.");
+ $stop_pgn_fetch = 1;
+ $http_timer = undef;
+ } elsif ($msg =~ /^quit$/) {
+ $t->cmd("tell $who Bye bye.");
+ exit;
+ } else {
+ $t->cmd("tell $who Couldn't understand '$msg', sorry.");
+ }
+ }
+ #print "FICS: [$line]\n";
+}
+
+# Starts periodic fetching of PGNs from the given URL.
+sub fetch_pgn {
+ my ($url) = @_;
+ AnyEvent::HTTP::http_get($url, sub {
+ handle_pgn(@_, $url);
+ });
+}
+
+my ($last_pgn_white, $last_pgn_black);
+my @last_pgn_uci_moves = ();
+my $pgn_hysteresis_counter = 0;
+
+sub handle_pgn {
+ my ($body, $header, $url) = @_;
+
+ if ($stop_pgn_fetch) {
+ $stop_pgn_fetch = 0;
+ $http_timer = undef;
+ return;
+ }
+
+ my $pgn = Chess::PGN::Parse->new(undef, $body);
+ if (!defined($pgn)) {
+ warn "Error in parsing PGN from $url [body='$body']\n";
+ } elsif (!$pgn->read_game()) {
+ warn "Error in reading PGN game from $url [body='$body']\n";
+ } elsif ($body !~ /^\[/) {
+ warn "Malformed PGN from $url [body='$body']\n";
+ } else {
+ eval {
+ # Skip to the right game.
+ while (defined($remoteglotconf::pgn_filter) &&
+ !&$remoteglotconf::pgn_filter($pgn)) {
+ $pgn->read_game() or die "Out of games during filtering";
+ }
+
+ $pgn->parse_game({ save_comments => 'yes' });
+ my $pos = Position->start_pos($pgn->white, $pgn->black);
+ my $moves = $pgn->moves;
+ my @uci_moves = ();
+ my @repretty_moves = ();
+ for my $move (@$moves) {
+ my ($npos, $uci_move) = $pos->make_pretty_move($move);
+ push @uci_moves, $uci_move;
+
+ # Re-prettyprint the move.
+ my ($from_row, $from_col, $to_row, $to_col, $promo) = parse_uci_move($uci_move);
+ my ($pretty, undef) = $pos->{'board'}->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
+ push @repretty_moves, $pretty;
+ $pos = $npos;
+ }
+ $pos->{'result'} = $pgn->result;
+ $pos->{'pretty_history'} = \@repretty_moves;
+
+ extract_clock($pgn, $pos);
+
+ # Sometimes, PGNs lose a move or two for a short while,
+ # or people push out new ones non-atomically.
+ # Thus, if we PGN doesn't change names but becomes
+ # shorter, we mistrust it for a few seconds.
+ my $trust_pgn = 1;
+ if (defined($last_pgn_white) && defined($last_pgn_black) &&
+ $last_pgn_white eq $pgn->white &&
+ $last_pgn_black eq $pgn->black &&
+ scalar(@uci_moves) < scalar(@last_pgn_uci_moves)) {
+ if (++$pgn_hysteresis_counter < 3) {
+ $trust_pgn = 0;
+ }
+ }
+ if ($trust_pgn) {
+ $last_pgn_white = $pgn->white;
+ $last_pgn_black = $pgn->black;
+ @last_pgn_uci_moves = @uci_moves;
+ $pgn_hysteresis_counter = 0;
+ handle_position($pos);
+ }
+ };
+ if ($@) {
+ warn "Error in parsing moves from $url: $@\n";
+ }
+ }
+
+ $http_timer = AnyEvent->timer(after => 1.0, cb => sub {
+ fetch_pgn($url);
+ });
+}
+
+sub handle_position {
+ my ($pos) = @_;
+ find_clock_start($pos, $pos_calculating);
+
+ # if this is already in the queue, ignore it (just update the result)
+ if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen()) {
+ $pos_waiting->{'result'} = $pos->{'result'};
+ return;
+ }
+
+ # if we're already chewing on this and there's nothing else in the queue,
+ # also ignore it
+ if (!defined($pos_waiting) && defined($pos_calculating) &&
+ $pos->fen() eq $pos_calculating->fen()) {
+ $pos_calculating->{'result'} = $pos->{'result'};
+ return;
+ }
+
+ # if we're already thinking on something, stop and wait for the engine
+ # to approve
+ if (defined($pos_calculating)) {
+ # Store the final data we have for this position in the history,
+ # with the precise clock information we just got from the new
+ # position. (Historic positions store the clock at the end of
+ # the position.)
+ #
+ # Do not output anything new to the main analysis; that's
+ # going to be obsolete really soon.
+ $pos_calculating->{'white_clock'} = $pos->{'white_clock'};
+ $pos_calculating->{'black_clock'} = $pos->{'black_clock'};
+ delete $pos_calculating->{'white_clock_target'};
+ delete $pos_calculating->{'black_clock_target'};
+ output_json(1);
+
+ if (!defined($pos_waiting)) {
+ uciprint($engine, "stop");
+ }
+ if ($remoteglotconf::uci_assume_full_compliance) {
+ $pos_waiting = $pos;
+ } else {
+ uciprint($engine, "position fen " . $pos->fen());
+ uciprint($engine, "go infinite");
+ $pos_calculating = $pos;
+ }
+ } else {
+ # it's wrong just to give the FEN (the move history is useful,
+ # and per the UCI spec, we should really have sent "ucinewgame"),
+ # but it's easier
+ uciprint($engine, "position fen " . $pos->fen());
+ uciprint($engine, "go infinite");
+ $pos_calculating = $pos;
+ }
+
+ if (defined($engine2)) {
+ if (defined($pos_calculating_second_engine)) {
+ uciprint($engine2, "stop");
+ } else {
+ uciprint($engine2, "position fen " . $pos->fen());
+ uciprint($engine2, "go infinite");
+ $pos_calculating_second_engine = $pos;
+ }
+ $engine2->{'info'} = {};
+ }
+
+ $engine->{'info'} = {};
+ $last_move = time;
+
+ schedule_tb_lookup();
+
+ #
+ # Output a command every move to note that we're
+ # still paying attention -- this is a good tradeoff,
+ # since if no move has happened in the last half
+ # hour, the analysis/relay has most likely stopped
+ # and we should stop hogging server resources.
+ #
+ $t->cmd("date");
}
sub parse_infos {
# Search for "multipv" first of all, since e.g. Stockfish doesn't put it first.
for my $i (0..$#x - 1) {
- if ($x[$i] =~ 'multipv') {
+ if ($x[$i] eq 'multipv') {
$mpv = $x[$i + 1];
next;
}
}
while (scalar @x > 0) {
- if ($x[0] =~ 'multipv') {
+ if ($x[0] eq 'multipv') {
# Dealt with above
shift @x;
shift @x;
next;
}
- if ($x[0] =~ /^(currmove|currmovenumber|cpuload)$/) {
+ if ($x[0] eq 'currmove' || $x[0] eq 'currmovenumber' || $x[0] eq 'cpuload') {
my $key = shift @x;
my $value = shift @x;
$info->{$key} = $value;
next;
}
- if ($x[0] =~ /^(depth|seldepth|hashfull|time|nodes|nps|tbhits)$/) {
+ if ($x[0] eq 'depth' || $x[0] eq 'seldepth' || $x[0] eq 'hashfull' ||
+ $x[0] eq 'time' || $x[0] eq 'nodes' || $x[0] eq 'nps' ||
+ $x[0] eq 'tbhits') {
my $key = shift @x;
my $value = shift @x;
$info->{$key . $mpv} = $value;
delete $info->{'score_cp' . $mpv};
delete $info->{'score_mate' . $mpv};
- while ($x[0] =~ /^(cp|mate|lowerbound|upperbound)$/) {
+ while ($x[0] eq 'cp' || $x[0] eq 'mate') {
if ($x[0] eq 'cp') {
shift @x;
$info->{'score_cp' . $mpv} = shift @x;
my ($engine, @x) = @_;
while (scalar @x > 0) {
- if ($x[0] =~ /^(name|author)$/) {
- my $key = shift @x;
+ if ($x[0] eq 'name') {
my $value = join(' ', @x);
- $engine->{'id'}{$key} = $value;
+ $engine->{'id'}{'author'} = $value;
last;
}
}
}
-sub prettyprint_pv {
+sub prettyprint_pv_no_cache {
my ($board, @pvs) = @_;
if (scalar @pvs == 0 || !defined($pvs[0])) {
}
my $pv = shift @pvs;
- my $from_col = col_letter_to_num(substr($pv, 0, 1));
- my $from_row = row_letter_to_num(substr($pv, 1, 1));
- my $to_col = col_letter_to_num(substr($pv, 2, 1));
- my $to_row = row_letter_to_num(substr($pv, 3, 1));
- my $promo = substr($pv, 4, 1);
-
+ my ($from_row, $from_col, $to_row, $to_col, $promo) = parse_uci_move($pv);
my ($pretty, $nb) = $board->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
- return ($pretty, prettyprint_pv($nb, @pvs));
+ return ( $pretty, prettyprint_pv_no_cache($nb, @pvs) );
+}
+
+sub prettyprint_pv {
+ my ($pos, @pvs) = @_;
+
+ my $cachekey = join('', @pvs);
+ if (exists($pos->{'prettyprint_cache'}{$cachekey})) {
+ return @{$pos->{'prettyprint_cache'}{$cachekey}};
+ } else {
+ my @res = prettyprint_pv_no_cache($pos->{'board'}, @pvs);
+ $pos->{'prettyprint_cache'}{$cachekey} = \@res;
+ return @res;
+ }
+}
+
+sub complete_using_tbprobe {
+ my ($pos, $info, $mpv) = @_;
+
+ # We need Fathom installed to do standalone TB probes.
+ return if (!defined($remoteglotconf::fathom_cmdline));
+
+ # If we already have a mate, don't bother; in some cases, it would even be
+ # better than a tablebase score.
+ return if defined($info->{'score_mate' . $mpv});
+
+ # If we have a draw or near-draw score, there's also not much interesting
+ # we could add from a tablebase. We only really want mates.
+ return if ($info->{'score_cp' . $mpv} >= -12250 && $info->{'score_cp' . $mpv} <= 12250);
+
+ # Run through the PV until we are at a 6-man position.
+ # TODO: We could in theory only have 5-man data.
+ my @pv = @{$info->{'pv' . $mpv}};
+ my $key = join('', @pv);
+ my @moves = ();
+ if (exists($pos->{'tbprobe_cache'}{$key})) {
+ @moves = $pos->{'tbprobe_cache'}{$key};
+ } else {
+ while ($pos->num_pieces() > 6 && $#pv > -1) {
+ my $move = shift @pv;
+ push @moves, $move;
+ $pos = $pos->make_move(parse_uci_move($move));
+ }
+
+ return if ($pos->num_pieces() > 6);
+
+ my $fen = $pos->fen();
+ my $pgn_text = `fathom --path=/srv/syzygy "$fen"`;
+ my $pgn = Chess::PGN::Parse->new(undef, $pgn_text);
+ return if (!defined($pgn) || !$pgn->read_game() || ($pgn->result ne '0-1' && $pgn->result ne '1-0'));
+ $pgn->quick_parse_game;
+ $info->{'pv' . $mpv} = \@moves;
+
+ # Splice the PV from the tablebase onto what we have so far.
+ for my $move (@{$pgn->moves}) {
+ my $uci_move;
+ ($pos, $uci_move) = $pos->make_pretty_move($move);
+ push @moves, $uci_move;
+ }
+ }
+
+ $info->{'pv' . $mpv} = \@moves;
+
+ my $matelen = int((1 + scalar @moves) / 2);
+ if ((scalar @moves) % 2 == 0) {
+ $info->{'score_mate' . $mpv} = -$matelen;
+ } else {
+ $info->{'score_mate' . $mpv} = $matelen;
+ }
}
sub output {
# Don't update too often.
my $age = Time::HiRes::tv_interval($latest_update);
- if ($age < $update_max_interval) {
- Time::HiRes::alarm($update_max_interval + 0.01 - $age);
+ if ($age < $remoteglotconf::update_max_interval) {
+ my $wait = $remoteglotconf::update_max_interval + 0.01 - $age;
+ $output_timer = AnyEvent->timer(after => $wait, cb => \&output);
return;
}
my $info = $engine->{'info'};
+
+ #
+ # If we have tablebase data from a previous lookup, replace the
+ # engine data with the data from the tablebase.
+ #
+ my $fen = $pos_calculating->fen();
+ if (exists($tb_cache{$fen})) {
+ for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
+ delete $info->{$key . '1'};
+ delete $info->{$key};
+ }
+ $info->{'nodes'} = 0;
+ $info->{'nps'} = 0;
+ $info->{'depth'} = 0;
+ $info->{'seldepth'} = 0;
+ $info->{'tbhits'} = 0;
+
+ my $t = $tb_cache{$fen};
+ my $pv = $t->{'pv'};
+ my $matelen = int((1 + $t->{'score'}) / 2);
+ if ($t->{'result'} eq '1/2-1/2') {
+ $info->{'score_cp'} = 0;
+ } elsif ($t->{'result'} eq '1-0') {
+ if ($pos_calculating->{'toplay'} eq 'B') {
+ $info->{'score_mate'} = -$matelen;
+ } else {
+ $info->{'score_mate'} = $matelen;
+ }
+ } else {
+ if ($pos_calculating->{'toplay'} eq 'B') {
+ $info->{'score_mate'} = $matelen;
+ } else {
+ $info->{'score_mate'} = -$matelen;
+ }
+ }
+ $info->{'pv'} = $pv;
+ $info->{'tablebase'} = 1;
+ } else {
+ $info->{'tablebase'} = 0;
+ }
#
# Some programs _always_ report MultiPV, even with only one PV.
for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
if (exists($info->{$key . '1'})) {
$info->{$key} = $info->{$key . '1'};
+ } else {
+ delete $info->{$key};
}
}
}
eval {
my $dummy;
if (exists($info->{'pv'})) {
- $dummy = prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}});
+ $dummy = prettyprint_pv($pos_calculating, @{$info->{'pv'}});
}
my $mpv = 1;
while (exists($info->{'pv' . $mpv})) {
- $dummy = prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv' . $mpv}});
+ $dummy = prettyprint_pv($pos_calculating, @{$info->{'pv' . $mpv}});
++$mpv;
}
};
return;
}
+ # Now do our own Syzygy tablebase probes to convert scores like +123.45 to mate.
+ if (exists($info->{'pv'})) {
+ complete_using_tbprobe($pos_calculating, $info, '');
+ }
+
+ my $mpv = 1;
+ while (exists($info->{'pv' . $mpv})) {
+ complete_using_tbprobe($pos_calculating, $info, $mpv);
+ ++$mpv;
+ }
+
output_screen();
- output_json();
+ output_json(0);
$latest_update = [Time::HiRes::gettimeofday];
}
}
$text .= ":\n";
- $text .= " " . join(', ', prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv' . $mpv}})) . "\n";
+ $text .= " " . join(', ', prettyprint_pv($pos_calculating, @{$info->{'pv' . $mpv}})) . "\n";
$text .= "\n";
++$mpv;
}
# single-PV
my $score = long_score($info, $pos_calculating, '');
$text .= " $score\n" if defined($score);
- $text .= " PV: " . join(', ', prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}}));
+ $text .= " PV: " . join(', ', prettyprint_pv($pos_calculating, @{$info->{'pv'}}));
$text .= "\n";
if (exists($info->{'nodes'}) && exists($info->{'nps'}) && exists($info->{'depth'})) {
my $info = $engine2->{'info'};
last if (!exists($info->{'pv' . $mpv}));
eval {
+ complete_using_tbprobe($pos_calculating_second_engine, $info, $mpv);
my $pv = $info->{'pv' . $mpv};
-
- my $pretty_move = join('', prettyprint_pv($pos_calculating_second_engine->{'board'}, $pv->[0]));
- my @pretty_pv = prettyprint_pv($pos_calculating_second_engine->{'board'}, @$pv);
+ my $pretty_move = join('', prettyprint_pv($pos_calculating_second_engine, $pv->[0]));
+ my @pretty_pv = prettyprint_pv($pos_calculating_second_engine, @$pv);
if (scalar @pretty_pv > 5) {
@pretty_pv = @pretty_pv[0..4];
push @pretty_pv, "...";
my $key = $pretty_move;
my $line = sprintf(" %-6s %6s %3s %s",
$pretty_move,
- short_score($info, $pos_calculating_second_engine, $mpv, 0),
+ short_score($info, $pos_calculating_second_engine, $mpv),
"d" . $info->{'depth' . $mpv},
join(', ', @pretty_pv));
push @refutation_lines, [ $key, $line ];
}
sub output_json {
+ my $historic_json_only = shift;
my $info = $engine->{'info'};
my $json = {};
$json->{'position'} = $pos_calculating->to_json_hash();
- $json->{'id'} = $engine->{'id'};
- $json->{'score'} = long_score($info, $pos_calculating, '');
+ $json->{'engine'} = $engine->{'id'};
+ if (defined($remoteglotconf::engine_url)) {
+ $json->{'engine'}{'url'} = $remoteglotconf::engine_url;
+ }
+ if (defined($remoteglotconf::engine_details)) {
+ $json->{'engine'}{'details'} = $remoteglotconf::engine_details;
+ }
+ if (defined($remoteglotconf::move_source)) {
+ $json->{'move_source'} = $remoteglotconf::move_source;
+ }
+ if (defined($remoteglotconf::move_source_url)) {
+ $json->{'move_source_url'} = $remoteglotconf::move_source_url;
+ }
+ $json->{'score'} = score_digest($info, $pos_calculating, '');
+ $json->{'using_lomonosov'} = defined($remoteglotconf::tb_serial_key);
$json->{'nodes'} = $info->{'nodes'};
$json->{'nps'} = $info->{'nps'};
$json->{'depth'} = $info->{'depth'};
$json->{'tbhits'} = $info->{'tbhits'};
$json->{'seldepth'} = $info->{'seldepth'};
+ $json->{'tablebase'} = $info->{'tablebase'};
- # single-PV only for now
- $json->{'pv_uci'} = $info->{'pv'};
- $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}}) ];
+ $json->{'pv_uci'} = $info->{'pv'}; # Still needs to be there for the JS to calculate arrows; only for the primary PV, though!
+ $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating, @{$info->{'pv'}}) ];
my %refutation_lines = ();
my @refutation_lines = ();
last if (!exists($info->{'pv' . $mpv}));
eval {
+ complete_using_tbprobe($pos_calculating, $info, $mpv);
my $pv = $info->{'pv' . $mpv};
- my $pretty_move = join('', prettyprint_pv($pos_calculating->{'board'}, $pv->[0]));
- my @pretty_pv = prettyprint_pv($pos_calculating->{'board'}, @$pv);
+ my $pretty_move = join('', prettyprint_pv($pos_calculating, $pv->[0]));
+ my @pretty_pv = prettyprint_pv($pos_calculating, @$pv);
$refutation_lines{$pv->[0]} = {
sort_key => $pretty_move,
depth => $info->{'depth' . $mpv},
- score_sort_key => score_sort_key($info, $pos_calculating, $mpv, 0),
- pretty_score => short_score($info, $pos_calculating, $mpv, 0),
+ score => score_digest($info, $pos_calculating, $mpv),
pretty_move => $pretty_move,
pv_pretty => \@pretty_pv,
};
- $refutation_lines{$pv->[0]}->{'pv_uci'} = $pv;
};
}
}
$json->{'refutation_lines'} = \%refutation_lines;
- open my $fh, ">/srv/analysis.sesse.net/www/analysis.json.tmp"
+ # Piece together historic score information, to the degree we have it.
+ if (!$historic_json_only && exists($pos_calculating->{'pretty_history'})) {
+ my %score_history = ();
+
+ my $q = $dbh->prepare('SELECT * FROM scores WHERE id=?');
+ my $pos = Position->start_pos('white', 'black');
+ my $halfmove_num = 0;
+ for my $move (@{$pos_calculating->{'pretty_history'}}) {
+ my $id = id_for_pos($pos, $halfmove_num);
+ my $ref = $dbh->selectrow_hashref($q, undef, $id);
+ if (defined($ref)) {
+ $score_history{$halfmove_num} = [
+ $ref->{'score_type'},
+ $ref->{'score_value'}
+ ];
+ }
+ ++$halfmove_num;
+ ($pos) = $pos->make_pretty_move($move);
+ }
+ $q->finish;
+
+ # If at any point we are missing 10 consecutive moves,
+ # truncate the history there. This is so we don't get into
+ # a situation where we e.g. start analyzing at move 45,
+ # but we have analysis for 1. e4 from some completely different game
+ # and thus show a huge hole.
+ my $consecutive_missing = 0;
+ my $truncate_until = 0;
+ for (my $i = $halfmove_num; $i --> 0; ) {
+ if ($consecutive_missing >= 10) {
+ delete $score_history{$i};
+ next;
+ }
+ if (exists($score_history{$i})) {
+ $consecutive_missing = 0;
+ } else {
+ ++$consecutive_missing;
+ }
+ }
+
+ $json->{'score_history'} = \%score_history;
+ }
+
+ # Give out a list of other games going on. (Empty is fine.)
+ if (!$historic_json_only) {
+ my @games = ();
+
+ my $q = $dbh->prepare('SELECT * FROM current_games ORDER BY priority DESC, id');
+ $q->execute;
+ while (my $ref = $q->fetchrow_hashref) {
+ eval {
+ my $other_game_contents = File::Slurp::read_file($ref->{'json_path'});
+ my $other_game_json = JSON::XS::decode_json($other_game_contents);
+
+ die "Missing position" if (!exists($other_game_json->{'position'}));
+ my $white = $other_game_json->{'position'}{'player_w'} // die 'Missing white';
+ my $black = $other_game_json->{'position'}{'player_b'} // die 'Missing black';
+
+ push @games, {
+ id => $ref->{'id'},
+ name => "$white–$black",
+ url => $ref->{'url'}
+ };
+ };
+ if ($@) {
+ warn "Could not add external game " . $ref->{'json_path'} . ": $@";
+ }
+ }
+
+ if (scalar @games > 0) {
+ $json->{'games'} = \@games;
+ }
+ }
+
+ my $json_enc = JSON::XS->new;
+ $json_enc->canonical(1);
+ my $encoded = $json_enc->encode($json);
+ unless ($historic_json_only || !defined($remoteglotconf::json_output) ||
+ (defined($last_written_json) && $last_written_json eq $encoded)) {
+ atomic_set_contents($remoteglotconf::json_output, $encoded);
+ $last_written_json = $encoded;
+ }
+
+ if (exists($pos_calculating->{'pretty_history'}) &&
+ defined($remoteglotconf::json_history_dir)) {
+ my $id = id_for_pos($pos_calculating);
+ my $filename = $remoteglotconf::json_history_dir . "/" . $id . ".json";
+
+ # Overwrite old analysis (assuming it exists at all) if we're
+ # using a different engine, or if we've calculated deeper.
+ # nodes is used as a tiebreaker. Don't bother about Multi-PV
+ # data; it's not that important.
+ my ($old_engine, $old_depth, $old_nodes) = get_json_analysis_stats($id);
+ my $new_depth = $json->{'depth'} // 0;
+ my $new_nodes = $json->{'nodes'} // 0;
+ if (!defined($old_engine) ||
+ $old_engine ne $json->{'engine'}{'name'} ||
+ $new_depth > $old_depth ||
+ ($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
+ atomic_set_contents($filename, $encoded);
+ if (defined($json->{'score'})) {
+ $dbh->do('INSERT INTO scores (id, score_type, score_value, engine, depth, nodes) VALUES (?,?,?,?,?,?) ' .
+ ' ON CONFLICT (id) DO UPDATE SET ' .
+ ' score_type=EXCLUDED.score_type, ' .
+ ' score_value=EXCLUDED.score_value, ' .
+ ' engine=EXCLUDED.engine, ' .
+ ' depth=EXCLUDED.depth, ' .
+ ' nodes=EXCLUDED.nodes',
+ undef,
+ $id, $json->{'score'}[0], $json->{'score'}[1],
+ $json->{'engine'}{'name'}, $new_depth, $new_nodes);
+ }
+ }
+ }
+}
+
+sub atomic_set_contents {
+ my ($filename, $contents) = @_;
+
+ open my $fh, ">", $filename . ".tmp"
or return;
- print $fh JSON::XS::encode_json($json);
+ print $fh $contents;
close $fh;
- rename("/srv/analysis.sesse.net/www/analysis.json.tmp", "/srv/analysis.sesse.net/www/analysis.json");
+ rename($filename . ".tmp", $filename);
+}
+
+sub id_for_pos {
+ my ($pos, $halfmove_num) = @_;
+
+ $halfmove_num //= scalar @{$pos->{'pretty_history'}};
+ (my $fen = $pos->fen()) =~ tr,/ ,-_,;
+ return "move$halfmove_num-$fen";
+}
+
+sub get_json_analysis_stats {
+ my $id = shift;
+ my $ref = $dbh->selectrow_hashref('SELECT * FROM scores WHERE id=?', undef, $id);
+ if (defined($ref)) {
+ return ($ref->{'engine'}, $ref->{'depth'}, $ref->{'nodes'});
+ } else {
+ return ('', 0, 0);
+ }
}
sub uciprint {
}
sub short_score {
- my ($info, $pos, $mpv, $invert) = @_;
-
- $invert //= 0;
- if ($pos->{'toplay'} eq 'B') {
- $invert = !$invert;
- }
+ my ($info, $pos, $mpv) = @_;
+ my $invert = ($pos->{'toplay'} eq 'B');
if (defined($info->{'score_mate' . $mpv})) {
if ($invert) {
return sprintf "M%3d", -$info->{'score_mate' . $mpv};
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv} * 0.01;
if ($score == 0) {
- return " 0.00";
+ if ($info->{'tablebase'}) {
+ return "TB draw";
+ } else {
+ return " 0.00";
+ }
}
if ($invert) {
$score = -$score;
return undef;
}
-sub score_sort_key {
- my ($info, $pos, $mpv, $invert) = @_;
+# Sufficient for computing long_score, short_score, plot_score and
+# (with side-to-play information) score_sort_key.
+sub score_digest {
+ my ($info, $pos, $mpv) = @_;
if (defined($info->{'score_mate' . $mpv})) {
- if ($invert) {
- return 99999 - $info->{'score_mate' . $mpv};
- } else {
- return -(99999 - $info->{'score_mate' . $mpv});
+ my $mate = $info->{'score_mate' . $mpv};
+ if ($pos->{'toplay'} eq 'B') {
+ $mate = -$mate;
}
+ return ['m', $mate];
} else {
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv};
- if ($invert) {
+ if ($pos->{'toplay'} eq 'B') {
$score = -$score;
}
- return $score;
+ if ($score == 0 && $info->{'tablebase'}) {
+ return ['d', undef];
+ } else {
+ return ['cp', $score];
+ }
}
}
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv} * 0.01;
if ($score == 0) {
- return "Score: 0.00";
+ if ($info->{'tablebase'}) {
+ return "Theoretical draw";
+ } else {
+ return "Score: 0.00";
+ }
}
if ($pos->{'toplay'} eq 'B') {
$score = -$score;
return undef;
}
+# For graphs; a single number in centipawns, capped at +/- 500.
+sub plot_score {
+ my ($info, $pos, $mpv) = @_;
+
+ my $invert = ($pos->{'toplay'} eq 'B');
+ if (defined($info->{'score_mate' . $mpv})) {
+ my $mate = $info->{'score_mate' . $mpv};
+ if ($invert) {
+ $mate = -$mate;
+ }
+ if ($mate > 0) {
+ return 500;
+ } else {
+ return -500;
+ }
+ } else {
+ if (exists($info->{'score_cp' . $mpv})) {
+ my $score = $info->{'score_cp' . $mpv};
+ if ($invert) {
+ $score = -$score;
+ }
+ $score = 500 if ($score > 500);
+ $score = -500 if ($score < -500);
+ return int($score);
+ }
+ }
+
+ return undef;
+}
+
my %book_cache = ();
sub book_info {
my ($fen, $board, $toplay) = @_;
if ($move eq '') {
$pmove = '(current)';
} else {
- ($pmove) = prettyprint_pv($board, $move);
+ ($pmove) = prettyprint_pv_no_cache($board, $move);
$pmove .= $annotation;
}
return $text;
}
-sub open_engine {
- my ($cmdline, $tag) = @_;
- return undef if (!defined($cmdline));
- my $engine = Engine->open($cmdline, $tag);
+sub extract_clock {
+ my ($pgn, $pos) = @_;
+
+ # Look for extended PGN clock tags.
+ my $tags = $pgn->tags;
+ if (exists($tags->{'WhiteClock'}) && exists($tags->{'BlackClock'})) {
+ $pos->{'white_clock'} = hms_to_sec($tags->{'WhiteClock'});
+ $pos->{'black_clock'} = hms_to_sec($tags->{'BlackClock'});
+ return;
+ }
- uciprint($engine, "uci");
+ # Look for TCEC-style time comments.
+ my $moves = $pgn->moves;
+ my $comments = $pgn->comments;
+ my $last_black_move = int((scalar @$moves) / 2);
+ my $last_white_move = int((1 + scalar @$moves) / 2);
+
+ my $black_key = $last_black_move . "b";
+ my $white_key = $last_white_move . "w";
+
+ if (exists($comments->{$white_key}) &&
+ exists($comments->{$black_key}) &&
+ $comments->{$white_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/ &&
+ $comments->{$black_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/) {
+ $comments->{$white_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/;
+ $pos->{'white_clock'} = hms_to_sec($1);
+ $comments->{$black_key} =~ /(?:tl=|clk )(\d+:\d+:\d+)/;
+ $pos->{'black_clock'} = hms_to_sec($1);
+ return;
+ }
+
+ delete $pos->{'white_clock'};
+ delete $pos->{'black_clock'};
+}
+
+sub hms_to_sec {
+ my $hms = shift;
+ return undef if (!defined($hms));
+ $hms =~ /(\d+):(\d+):(\d+)/;
+ return $1 * 3600 + $2 * 60 + $3;
+}
+
+sub find_clock_start {
+ my ($pos, $prev_pos) = @_;
+
+ # If the game is over, the clock is stopped.
+ if (exists($pos->{'result'}) &&
+ ($pos->{'result'} eq '1-0' ||
+ $pos->{'result'} eq '1/2-1/2' ||
+ $pos->{'result'} eq '0-1')) {
+ return;
+ }
+
+ # When we don't have any moves, we assume the clock hasn't started yet.
+ if ($pos->{'move_num'} == 1 && $pos->{'toplay'} eq 'W') {
+ if (defined($remoteglotconf::adjust_clocks_before_move)) {
+ &$remoteglotconf::adjust_clocks_before_move(\$pos->{'white_clock'}, \$pos->{'black_clock'}, 1, 'W');
+ }
+ return;
+ }
+
+ # TODO(sesse): Maybe we can get the number of moves somehow else for FICS games.
+ # The history is needed for id_for_pos.
+ if (!exists($pos->{'pretty_history'})) {
+ return;
+ }
- # gobble the options
- my $seen_uciok = 0;
- while (!$seen_uciok) {
- for my $line ($engine->read_lines()) {
- if ($line =~ /uciok/) {
- $seen_uciok = 1;
+ my $id = id_for_pos($pos);
+ my $clock_info = $dbh->selectrow_hashref('SELECT * FROM clock_info WHERE id=?', undef, $id);
+ if (defined($clock_info)) {
+ $pos->{'white_clock'} //= $clock_info->{'white_clock'};
+ $pos->{'black_clock'} //= $clock_info->{'black_clock'};
+ if ($pos->{'toplay'} eq 'W') {
+ $pos->{'white_clock_target'} = $clock_info->{'white_clock_target'};
+ } else {
+ $pos->{'black_clock_target'} = $clock_info->{'black_clock_target'};
+ }
+ return;
+ }
+
+ # OK, we haven't seen this position before, so we assume the move
+ # happened right now.
+
+ # See if we should do our own clock management (ie., clock information
+ # is spurious or non-existent).
+ if (defined($remoteglotconf::adjust_clocks_before_move)) {
+ my $wc = $pos->{'white_clock'} // $prev_pos->{'white_clock'};
+ my $bc = $pos->{'black_clock'} // $prev_pos->{'black_clock'};
+ if (defined($prev_pos->{'white_clock_target'})) {
+ $wc = $prev_pos->{'white_clock_target'} - time;
+ }
+ if (defined($prev_pos->{'black_clock_target'})) {
+ $bc = $prev_pos->{'black_clock_target'} - time;
+ }
+ &$remoteglotconf::adjust_clocks_before_move(\$wc, \$bc, $pos->{'move_num'}, $pos->{'toplay'});
+ $pos->{'white_clock'} = $wc;
+ $pos->{'black_clock'} = $bc;
+ }
+
+ my $key = ($pos->{'toplay'} eq 'W') ? 'white_clock' : 'black_clock';
+ if (!exists($pos->{$key})) {
+ # No clock information.
+ return;
+ }
+ my $time_left = $pos->{$key};
+ my ($white_clock_target, $black_clock_target);
+ if ($pos->{'toplay'} eq 'W') {
+ $white_clock_target = $pos->{'white_clock_target'} = time + $time_left;
+ } else {
+ $black_clock_target = $pos->{'black_clock_target'} = time + $time_left;
+ }
+ local $dbh->{AutoCommit} = 0;
+ $dbh->do('DELETE FROM clock_info WHERE id=?', undef, $id);
+ $dbh->do('INSERT INTO clock_info (id, white_clock, black_clock, white_clock_target, black_clock_target) VALUES (?, ?, ?, ?, ?)', undef,
+ $id, $pos->{'white_clock'}, $pos->{'black_clock'}, $white_clock_target, $black_clock_target);
+ $dbh->commit;
+}
+
+sub schedule_tb_lookup {
+ return if (!defined($remoteglotconf::tb_serial_key));
+ my $pos = $pos_waiting // $pos_calculating;
+ return if (exists($tb_cache{$pos->fen()}));
+
+ # If there's more than seven pieces, there's not going to be an answer,
+ # so don't bother.
+ return if ($pos->num_pieces() > 7);
+
+ # Max one at a time. If it's still relevant when it returns,
+ # schedule_tb_lookup() will be called again.
+ return if ($tb_lookup_running);
+
+ $tb_lookup_running = 1;
+ my $url = 'http://158.250.18.203:6904/tasks/addtask?auth.login=' .
+ $remoteglotconf::tb_serial_key .
+ '&auth.password=aquarium&type=0&fen=' .
+ URI::Escape::uri_escape($pos->fen());
+ print TBLOG "Downloading $url...\n";
+ AnyEvent::HTTP::http_get($url, sub {
+ handle_tb_lookup_return(@_, $pos, $pos->fen());
+ });
+}
+
+sub handle_tb_lookup_return {
+ my ($body, $header, $pos, $fen) = @_;
+ print TBLOG "Response for [$fen]:\n";
+ print TBLOG $header . "\n\n";
+ print TBLOG $body . "\n\n";
+ eval {
+ my $response = JSON::XS::decode_json($body);
+ if ($response->{'ErrorCode'} != 0) {
+ die "Unknown tablebase server error: " . $response->{'ErrorDesc'};
+ }
+ my $state = $response->{'Response'}{'StateString'};
+ if ($state eq 'COMPLETE') {
+ my $pgn = Chess::PGN::Parse->new(undef, $response->{'Response'}{'Moves'});
+ if (!defined($pgn) || !$pgn->read_game()) {
+ warn "Error in parsing PGN\n";
+ } else {
+ $pgn->quick_parse_game;
+ my $pvpos = $pos;
+ my $moves = $pgn->moves;
+ my @uci_moves = ();
+ for my $move (@$moves) {
+ my $uci_move;
+ ($pvpos, $uci_move) = $pvpos->make_pretty_move($move);
+ push @uci_moves, $uci_move;
+ }
+ $tb_cache{$fen} = {
+ result => $pgn->result,
+ pv => \@uci_moves,
+ score => $response->{'Response'}{'Score'},
+ };
+ output();
}
- handle_uci($engine, $line);
+ } elsif ($state =~ /QUEUED/ || $state =~ /PROCESSING/) {
+ # Try again in a second. Note that if we have changed
+ # position in the meantime, we might query a completely
+ # different position! But that's fine.
+ } else {
+ die "Unknown response state " . $state;
}
+
+ # Wait a second before we schedule another one.
+ $tb_retry_timer = AnyEvent->timer(after => 1.0, cb => sub {
+ $tb_lookup_running = 0;
+ schedule_tb_lookup();
+ });
+ };
+ if ($@) {
+ warn "Error in tablebase lookup: $@";
+
+ # Don't try this one again, but don't block new lookups either.
+ $tb_lookup_running = 0;
}
-
- return $engine;
+}
+
+sub open_engine {
+ my ($cmdline, $tag, $cb) = @_;
+ return undef if (!defined($cmdline));
+ return Engine->open($cmdline, $tag, $cb);
}
sub col_letter_to_num {
return 7 - (ord(shift) - ord('1'));
}
+sub parse_uci_move {
+ my $move = shift;
+ my $from_col = col_letter_to_num(substr($move, 0, 1));
+ my $from_row = row_letter_to_num(substr($move, 1, 1));
+ my $to_col = col_letter_to_num(substr($move, 2, 1));
+ my $to_row = row_letter_to_num(substr($move, 3, 1));
+ my $promo = substr($move, 4, 1);
+ return ($from_row, $from_col, $to_row, $to_col, $promo);
+}
projects / remoteglot / blobdiff