# 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 IPC::Open2;
use Time::HiRes;
+use JSON::XS;
+use URI::Escape;
+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";
-my $telltarget = undef; # undef to be silent
-my @tell_intervals = (5, 20, 60, 120, 240, 480, 960); # after each move
-my $uci_assume_full_compliance = 0; # dangerous :-)
-my $update_max_interval = 2.0;
-my $second_engine_start_depth = 8;
-my @masters = (
- 'Sesse',
- 'Sessse',
- 'Sesssse',
- 'greatestguns',
- 'beuki'
-);
+no warnings qw(once);
# Program starts here
-$SIG{ALRM} = sub { output_screen(); };
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;
$| = 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);
# open the chess engine
-my $engine = open_engine($engine_cmdline, 'E1');
-my $engine2 = open_engine($engine2_cmdline, 'E2');
-my ($last_move, $last_tell);
+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 $last_told_text = '';
-my ($pos_waiting, $pos_calculating, $move_calculating_second_engine);
-my %refutation_moves = ();
+my ($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");
-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($engine2, "setoption name Threads value 8");
-# uciprint($engine2, "setoption name MultiPV value 2");
-uciprint($engine2, "ucinewgame");
+if (defined($engine2)) {
+ uciprint($engine2, "setoption name UCI_AnalyseMode value true");
+ while (my ($key, $value) = each %remoteglotconf::engine2_config) {
+ uciprint($engine2, "setoption name $key value $value");
+ }
+ uciprint($engine2, "setoption name MultiPV value 500");
+ uciprint($engine2, "ucinewgame");
+}
print "Chess engine ready.\n";
# 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($engine->{'read'}), 1) = 1;
- vec($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 $pos = style12_to_pos($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 = $pos;
- }
-
- %refutation_moves = calculate_refutation_moves($pos);
- if (defined($move_calculating_second_engine)) {
- uciprint($engine2, "stop");
- $move_calculating_second_engine = undef;
- } else {
- give_new_move_to_second_engine($pos);
- }
-
- $engine->{'info'} = {};
- $engine2->{'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.
- #
- $t->cmd("date");
- }
- if ($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 = read_lines($engine);
- for my $line (@lines) {
- handle_uci($engine, $line, 1);
+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);
}
- $sleep = 0;
-
- output_screen();
}
- if ($nfound > 0 && vec($rout, fileno($engine2->{'read'}), 1) == 1) {
- my @lines = read_lines($engine2);
- for my $line (@lines) {
- handle_uci($engine2, $line, 0);
- }
- $sleep = 0;
-
- output_screen();
+);
+if (defined($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, "position fen " . $pos_waiting->fen());
uciprint($engine, "go infinite");
$pos_calculating = $pos_waiting;
$pos_waiting = undef;
}
} else {
- if (defined($move_calculating_second_engine)) {
- my $move = $refutation_moves{$move_calculating_second_engine};
- $move->{'pv'} = $engine->{'info'}{'pv'};
- $move->{'score_cp'} = $engine->{'info'}{'score_cp'} // $engine->{'info'}{'score_cp1'} // 0;
- $move->{'score_mate'} = $engine->{'info'}{'score_mate'} // $engine->{'info'}{'score_mate1'};
- $move->{'toplay'} = $pos_calculating->{'toplay'};
+ $engine2->{'info'} = {};
+ my $pos = $pos_waiting // $pos_calculating;
+ uciprint($engine2, "position fen " . $pos->fen());
+ uciprint($engine2, "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, $2;
}
- give_new_move_to_second_engine($pos_waiting // $pos_calculating);
+ };
+ if ($@) {
+ 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->{'history'} = \@uci_movelist;
+ $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) || !$pgn->read_game()) {
+ warn "Error in parsing PGN from $url\n";
+ } else {
+ eval {
+ $pgn->quick_parse_game;
+ my $pos = Position->start_pos($pgn->white, $pgn->black);
+ my $moves = $pgn->moves;
+ my @uci_moves = ();
+ for my $move (@$moves) {
+ my $uci_move;
+ ($pos, $uci_move) = $pos->make_pretty_move($move);
+ push @uci_moves, $uci_move;
+ }
+ $pos->{'history'} = \@uci_moves;
+ $pos->{'pretty_history'} = $moves;
+
+ # 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 ($pos) = @_;
+
+ # if this is already in the queue, ignore it
+ return if (defined($pos_waiting) && $pos->fen() eq $pos_waiting->fen());
+
+ # if we're already chewing on this and there's nothing else in the queue,
+ # also ignore it
+ return if (!defined($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 ($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 {
my $info = $engine->{'info'};
+ # Search for "multipv" first of all, since e.g. Stockfish doesn't put it first.
+ for my $i (0..$#x - 1) {
+ 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;
- $mpv = shift @x;
next;
}
- if ($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;
}
}
-sub style12_to_pos {
- my $str = shift;
- my %pos = ();
- my (@x) = split / /, $str;
-
- $pos{'board'} = [ @x[1..8] ];
- $pos{'toplay'} = $x[9];
- $pos{'ep_file_num'} = $x[10];
- $pos{'white_castle_k'} = $x[11];
- $pos{'white_castle_q'} = $x[12];
- $pos{'black_castle_k'} = $x[13];
- $pos{'black_castle_q'} = $x[14];
- $pos{'time_to_100move_rule'} = $x[15];
- $pos{'move_num'} = $x[26];
- $pos{'last_move'} = $x[29];
- $pos{'fen'} = make_fen(\%pos);
-
- return \%pos;
-}
-
-sub make_fen {
- my $pos = shift;
-
- # the board itself
- my (@board) = @{$pos->{'board'}};
- for my $rank (0..7) {
- $board[$rank] =~ s/(-+)/length($1)/ge;
- }
- my $fen = join('/', @board);
-
- # white/black to move
- $fen .= " ";
- $fen .= lc($pos->{'toplay'});
-
- # castling
- my $castling = "";
- $castling .= "K" if ($pos->{'white_castle_k'} == 1);
- $castling .= "Q" if ($pos->{'white_castle_q'} == 1);
- $castling .= "k" if ($pos->{'black_castle_k'} == 1);
- $castling .= "q" if ($pos->{'black_castle_q'} == 1);
- $castling = "-" if ($castling eq "");
- # $castling = "-"; # chess960
- $fen .= " ";
- $fen .= $castling;
-
- # en passant
- my $ep = "-";
- if ($pos->{'ep_file_num'} != -1) {
- my $col = $pos->{'ep_file_num'};
- my $nep = (qw(a b c d e f g h))[$col];
-
- if ($pos->{'toplay'} eq 'B') {
- $nep .= "3";
- } else {
- $nep .= "6";
- }
-
- #
- # Showing the en passant square when actually no capture can be made
- # seems to confuse at least Rybka. Thus, check if there's actually
- # a pawn of the opposite side that can do the en passant move, and if
- # not, just lie -- it doesn't matter anyway. I'm unsure what's the
- # "right" thing as per the standard, though.
- #
- if ($pos->{'toplay'} eq 'B') {
- $ep = $nep if ($col > 0 && substr($pos->{'board'}[4], $col-1, 1) eq 'p');
- $ep = $nep if ($col < 7 && substr($pos->{'board'}[4], $col+1, 1) eq 'p');
- } else {
- $ep = $nep if ($col > 0 && substr($pos->{'board'}[3], $col-1, 1) eq 'P');
- $ep = $nep if ($col < 7 && substr($pos->{'board'}[3], $col+1, 1) eq 'P');
- }
- }
- $fen .= " ";
- $fen .= $ep;
-
- # half-move clock
- $fen .= " ";
- $fen .= $pos->{'time_to_100move_rule'};
-
- # full-move clock
- $fen .= " ";
- $fen .= $pos->{'move_num'};
-
- return $fen;
-}
-
-sub make_move {
- my ($board, $from_row, $from_col, $to_row, $to_col, $promo) = @_;
- my $move = move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
- my $piece = substr($board->[$from_row], $from_col, 1);
- my @nb = @$board;
-
- if ($piece eq '-') {
- die "Invalid move $move";
- }
-
- # white short castling
- if ($move eq 'e1g1' && $piece eq 'K') {
- # king
- substr($nb[7], 4, 1, '-');
- substr($nb[7], 6, 1, $piece);
-
- # rook
- substr($nb[7], 7, 1, '-');
- substr($nb[7], 5, 1, 'R');
-
- return \@nb;
- }
-
- # white long castling
- if ($move eq 'e1c1' && $piece eq 'K') {
- # king
- substr($nb[7], 4, 1, '-');
- substr($nb[7], 2, 1, $piece);
-
- # rook
- substr($nb[7], 0, 1, '-');
- substr($nb[7], 3, 1, 'R');
-
- return \@nb;
- }
-
- # black short castling
- if ($move eq 'e8g8' && $piece eq 'k') {
- # king
- substr($nb[0], 4, 1, '-');
- substr($nb[0], 6, 1, $piece);
-
- # rook
- substr($nb[0], 7, 1, '-');
- substr($nb[0], 5, 1, 'r');
-
- return \@nb;
- }
-
- # black long castling
- if ($move eq 'e8c8' && $piece eq 'k') {
- # king
- substr($nb[0], 4, 1, '-');
- substr($nb[0], 2, 1, $piece);
-
- # rook
- substr($nb[0], 0, 1, '-');
- substr($nb[0], 3, 1, 'r');
-
- return \@nb;
- }
-
- # check if the from-piece is a pawn
- if (lc($piece) eq 'p') {
- # attack?
- if ($from_col != $to_col) {
- # en passant?
- if (substr($board->[$to_row], $to_col, 1) eq '-') {
- if ($piece eq 'p') {
- substr($nb[$to_row + 1], $to_col, 1, '-');
- } else {
- substr($nb[$to_row - 1], $to_col, 1, '-');
- }
- }
- } else {
- if ($promo ne '') {
- if ($piece eq 'p') {
- $piece = $promo;
- } else {
- $piece = uc($promo);
- }
- }
- }
- }
-
- # update the board
- substr($nb[$from_row], $from_col, 1, '-');
- substr($nb[$to_row], $to_col, 1, $piece);
-
- return \@nb;
-}
-
-sub prettyprint_pv {
+sub prettyprint_pv_no_cache {
my ($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 $nb = make_move($board, $from_row, $from_col, $to_row, $to_col, $promo);
- my $piece = substr($board->[$from_row], $from_col, 1);
-
- if ($piece eq '-') {
- die "Invalid move $pv";
- }
-
- # white short castling
- if ($pv eq 'e1g1' && $piece eq 'K') {
- return ('0-0', prettyprint_pv($nb, @pvs));
- }
-
- # white long castling
- if ($pv eq 'e1c1' && $piece eq 'K') {
- return ('0-0-0', prettyprint_pv($nb, @pvs));
- }
-
- # black short castling
- if ($pv eq 'e8g8' && $piece eq 'k') {
- return ('0-0', prettyprint_pv($nb, @pvs));
- }
-
- # black long castling
- if ($pv eq 'e8c8' && $piece eq 'k') {
- return ('0-0-0', prettyprint_pv($nb, @pvs));
- }
-
- my $pretty;
-
- # check if the from-piece is a pawn
- if (lc($piece) eq 'p') {
- # attack?
- if ($from_col != $to_col) {
- $pretty = substr($pv, 0, 1) . 'x' . substr($pv, 2, 2);
- } else {
- $pretty = substr($pv, 2, 2);
+ my ($from_col, $from_row, $to_col, $to_row, $promo) = parse_uci_move($pv);
+ my ($pretty, $nb) = $board->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
+ return ( $pretty, prettyprint_pv_no_cache($nb, @pvs) );
+}
- if (length($pv) == 5) {
- # promotion
- $pretty .= "=";
- $pretty .= uc(substr($pv, 4, 1));
+sub prettyprint_pv {
+ my ($pos, @pvs) = @_;
- if ($piece eq 'p') {
- $piece = substr($pv, 4, 1);
- } else {
- $piece = uc(substr($pv, 4, 1));
- }
- }
- }
+ my $cachekey = join('', @pvs);
+ if (exists($pos->{'prettyprint_cache'}{$cachekey})) {
+ return @{$pos->{'prettyprint_cache'}{$cachekey}};
} else {
- $pretty = uc($piece);
-
- # see how many of these pieces could go here, in all
- my $num_total = 0;
- for my $col (0..7) {
- for my $row (0..7) {
- next unless (substr($board->[$row], $col, 1) eq $piece);
- ++$num_total if (can_reach($board, $piece, $row, $col, $to_row, $to_col));
- }
- }
-
- # see how many of these pieces from the given row could go here
- my $num_row = 0;
- for my $col (0..7) {
- next unless (substr($board->[$from_row], $col, 1) eq $piece);
- ++$num_row if (can_reach($board, $piece, $from_row, $col, $to_row, $to_col));
- }
-
- # and same for columns
- my $num_col = 0;
- for my $row (0..7) {
- next unless (substr($board->[$row], $from_col, 1) eq $piece);
- ++$num_col if (can_reach($board, $piece, $row, $from_col, $to_row, $to_col));
- }
-
- # see if we need to disambiguate
- if ($num_total > 1) {
- if ($num_col == 1) {
- $pretty .= substr($pv, 0, 1);
- } elsif ($num_row == 1) {
- $pretty .= substr($pv, 1, 1);
- } else {
- $pretty .= substr($pv, 0, 2);
- }
- }
-
- # attack?
- if (substr($board->[$to_row], $to_col, 1) ne '-') {
- $pretty .= 'x';
- }
-
- $pretty .= substr($pv, 2, 2);
- }
-
- if (in_mate($nb)) {
- $pretty .= '#';
- } elsif (in_check($nb) ne 'none') {
- $pretty .= '+';
+ my @res = prettyprint_pv_no_cache($pos->{'board'}, @pvs);
+ $pos->{'prettyprint_cache'}{$cachekey} = \@res;
+ return @res;
}
- return ($pretty, prettyprint_pv($nb, @pvs));
}
-sub output_screen {
+sub output {
#return;
return if (!defined($pos_calculating));
# 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;
}
- $latest_update = [Time::HiRes::gettimeofday];
-
+
my $info = $engine->{'info'};
- my $id = $engine->{'id'};
+ #
+ # 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 {
+ $info->{'tablebase'} = 0;
+ }
+
+ #
+ # Some programs _always_ report MultiPV, even with only one PV.
+ # In this case, we simply use that data as if MultiPV was never
+ # specified.
+ #
+ if (exists($info->{'pv1'}) && !exists($info->{'pv2'})) {
+ for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
+ if (exists($info->{$key . '1'})) {
+ $info->{$key} = $info->{$key . '1'};
+ }
+ }
+ }
+
#
# Check the PVs first. if they're invalid, just wait, as our data
# is most likely out of sync. This isn't a very good solution, as
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;
}
+ output_screen();
+ output_json();
+ $latest_update = [Time::HiRes::gettimeofday];
+}
+
+sub output_screen {
+ my $info = $engine->{'info'};
+ my $id = $engine->{'id'};
+
my $text = 'Analysis';
if ($pos_calculating->{'last_move'} ne 'none') {
if ($pos_calculating->{'toplay'} eq 'W') {
return unless (exists($pos_calculating->{'board'}));
- #
- # Some programs _always_ report MultiPV, even with only one PV.
- # In this case, we simply use that data as if MultiPV was never
- # specified.
- #
- if (exists($info->{'pv1'}) && !exists($info->{'pv2'})) {
- for my $key (qw(pv score_cp score_mate nodes nps depth seldepth tbhits)) {
- if (exists($info->{$key . '1'}) && !exists($info->{$key})) {
- $info->{$key} = $info->{$key . '1'};
- }
- }
- }
-
if (exists($info->{'pv1'}) && exists($info->{'pv2'})) {
# multi-PV
my $mpv = 1;
}
$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'})) {
$text .= sprintf " %u nodes, %7u nodes/sec, depth %u ply",
$info->{'nodes'}, $info->{'nps'}, $info->{'depth'};
}
+ if (exists($info->{'seldepth'})) {
+ $text .= sprintf " (%u selective)", $info->{'seldepth'};
+ }
if (exists($info->{'tbhits'}) && $info->{'tbhits'} > 0) {
if ($info->{'tbhits'} == 1) {
- $text .= ", one Nalimov hit";
+ $text .= ", one Syzygy hit";
} else {
- $text .= sprintf ", %u Nalimov hits", $info->{'tbhits'};
+ $text .= sprintf ", %u Syzygy hits", $info->{'tbhits'};
}
}
- if (exists($info->{'seldepth'})) {
- $text .= sprintf " (%u selective)", $info->{'seldepth'};
- }
$text .= "\n\n";
}
- #$text .= book_info($pos_calculating->{'fen'}, $pos_calculating->{'board'}, $pos_calculating->{'toplay'});
+ #$text .= book_info($pos_calculating->fen(), $pos_calculating->{'board'}, $pos_calculating->{'toplay'});
my @refutation_lines = ();
- for my $move (keys %refutation_moves) {
- eval {
- my $m = $refutation_moves{$move};
- die if ($m->{'depth'} < $second_engine_start_depth);
- my $pretty_move = join('', prettyprint_pv($pos_calculating->{'board'}, $move));
- my @pretty_pv = prettyprint_pv($pos_calculating->{'board'}, $move, @{$m->{'pv'}});
- if (scalar @pretty_pv > 5) {
- @pretty_pv = @pretty_pv[0..4];
- push @pretty_pv, "...";
- }
- #my $key = score_sort_key($refutation_moves{$move}, $pos_calculating, '', 1);
- my $key = $pretty_move;
- my $line = sprintf(" %-6s %6s %3s %s",
- $pretty_move,
- short_score($refutation_moves{$move}, $pos_calculating, '', 1),
- "d" . $m->{'depth'},
- join(', ', @pretty_pv));
- push @refutation_lines, [ $key, $line ];
- };
+ if (defined($engine2)) {
+ for (my $mpv = 1; $mpv < 500; ++$mpv) {
+ my $info = $engine2->{'info'};
+ last if (!exists($info->{'pv' . $mpv}));
+ eval {
+ my $pv = $info->{'pv' . $mpv};
+
+ 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),
+ "d" . $info->{'depth' . $mpv},
+ join(', ', @pretty_pv));
+ push @refutation_lines, [ $key, $line ];
+ };
+ }
}
if ($#refutation_lines >= 0) {
print $text;
$last_text = $text;
}
-
- # Now construct the tell text, if any
- return if (!defined($telltarget));
-
- my $tell_text = '';
-
- if (exists($id->{'name'})) {
- $tell_text .= "Analysis by $id->{'name'} -- see http://analysis.sesse.net/ for more information\n";
- } else {
- $tell_text .= "Computer analysis -- http://analysis.sesse.net/ for more information\n";
- }
-
- if (exists($info->{'pv1'}) && exists($info->{'pv2'})) {
- # multi-PV
- my $mpv = 1;
- while (exists($info->{'pv' . $mpv})) {
- $tell_text .= sprintf " PV%2u", $mpv;
- my $score = short_score($info, $pos_calculating, $mpv);
- $tell_text .= " ($score)" if (defined($score));
-
- if (exists($info->{'depth' . $mpv})) {
- $tell_text .= sprintf " (%2u ply)", $info->{'depth' . $mpv};
- }
-
- $tell_text .= ": ";
- $tell_text .= join(', ', prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv' . $mpv}}));
- $tell_text .= "\n";
- ++$mpv;
- }
- } else {
- # single-PV
- my $score = long_score($info, $pos_calculating, '');
- $tell_text .= " $score\n" if defined($score);
- $tell_text .= " PV: " . join(', ', prettyprint_pv($pos_calculating->{'board'}, @{$info->{'pv'}}));
- if (exists($info->{'depth'})) {
- $tell_text .= sprintf " (depth %u ply)", $info->{'depth'};
- }
- $tell_text .= "\n";
- }
-
- # see if a new tell is called for -- it is if the delay has expired _and_
- # this is not simply a repetition of the last one
- if ($last_told_text ne $tell_text) {
- my $now = time;
- for my $iv (@tell_intervals) {
- last if ($now - $last_move < $iv);
- next if ($last_tell - $last_move >= $iv);
-
- for my $line (split /\n/, $tell_text) {
- $t->print("tell $telltarget [$target] $line");
- }
-
- $last_told_text = $text;
- $last_tell = $now;
-
- last;
- }
- }
}
-sub find_kings {
- my $board = shift;
- my ($wkr, $wkc, $bkr, $bkc);
-
- for my $row (0..7) {
- for my $col (0..7) {
- my $piece = substr($board->[$row], $col, 1);
- if ($piece eq 'K') {
- ($wkr, $wkc) = ($row, $col);
- } elsif ($piece eq 'k') {
- ($bkr, $bkc) = ($row, $col);
- }
- }
- }
-
- return ($wkr, $wkc, $bkr, $bkc);
-}
-
-sub in_mate {
- my $board = shift;
- my $check = in_check($board);
- return 0 if ($check eq 'none');
-
- # try all possible moves for the side in check
- for my $row (0..7) {
- for my $col (0..7) {
- my $piece = substr($board->[$row], $col, 1);
- next if ($piece eq '-');
+sub output_json {
+ my $info = $engine->{'info'};
- if ($check eq 'white') {
- next if ($piece eq lc($piece));
- } else {
- next if ($piece eq uc($piece));
- }
+ my $json = {};
+ $json->{'position'} = $pos_calculating->to_json_hash();
+ $json->{'id'} = $engine->{'id'};
+ $json->{'score'} = long_score($info, $pos_calculating, '');
+ $json->{'short_score'} = short_score($info, $pos_calculating, '');
- for my $dest_row (0..7) {
- for my $dest_col (0..7) {
- next if ($row == $dest_row && $col == $dest_col);
- next unless (can_reach($board, $piece, $row, $col, $dest_row, $dest_col));
+ $json->{'nodes'} = $info->{'nodes'};
+ $json->{'nps'} = $info->{'nps'};
+ $json->{'depth'} = $info->{'depth'};
+ $json->{'tbhits'} = $info->{'tbhits'};
+ $json->{'seldepth'} = $info->{'seldepth'};
+ $json->{'tablebase'} = $info->{'tablebase'};
- my @nb = @$board;
- substr($nb[$row], $col, 1, '-');
- substr($nb[$dest_row], $dest_col, 1, $piece);
+ # single-PV only for now
+ $json->{'pv_uci'} = $info->{'pv'};
+ $json->{'pv_pretty'} = [ prettyprint_pv($pos_calculating, @{$info->{'pv'}}) ];
- my $new_check = in_check(\@nb);
- return 0 if ($new_check ne $check && $new_check ne 'both');
- }
- }
+ my %refutation_lines = ();
+ my @refutation_lines = ();
+ if (defined($engine2)) {
+ for (my $mpv = 1; $mpv < 500; ++$mpv) {
+ my $info = $engine2->{'info'};
+ my $pretty_move = "";
+ my @pretty_pv = ();
+ last if (!exists($info->{'pv' . $mpv}));
+
+ eval {
+ my $pv = $info->{'pv' . $mpv};
+ 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),
+ pretty_move => $pretty_move,
+ pv_pretty => \@pretty_pv,
+ };
+ $refutation_lines{$pv->[0]}->{'pv_uci'} = $pv;
+ };
}
}
-
- # nothing to do; mate
- return 1;
-}
-
-sub in_check {
- my $board = shift;
- my ($black_check, $white_check) = (0, 0);
-
- my ($wkr, $wkc, $bkr, $bkc) = find_kings($board);
-
- # check all pieces for the possibility of threatening the two kings
- for my $row (0..7) {
- for my $col (0..7) {
- my $piece = substr($board->[$row], $col, 1);
- next if ($piece eq '-');
-
- if (uc($piece) eq $piece) {
- # white piece
- $black_check = 1 if (can_reach($board, $piece, $row, $col, $bkr, $bkc));
- } else {
- # black piece
- $white_check = 1 if (can_reach($board, $piece, $row, $col, $wkr, $wkc));
- }
+ $json->{'refutation_lines'} = \%refutation_lines;
+
+ my $encoded = JSON::XS::encode_json($json);
+ atomic_set_contents($remoteglotconf::json_output, $encoded);
+
+ if (exists($pos_calculating->{'history'}) &&
+ defined($remoteglotconf::json_history_dir)) {
+ my $halfmove_num = scalar @{$pos_calculating->{'history'}};
+ (my $fen = $pos_calculating->fen()) =~ tr,/ ,-_,;
+ my $filename = $remoteglotconf::json_history_dir . "/move$halfmove_num-$fen.json";
+
+ # Overwrite old analysis (assuming it exists at all) if we're
+ # using a different engine, or if we've calculated deeper.
+ # nodes is used as a tiebreaker. Don't bother about Multi-PV
+ # data; it's not that important.
+ my ($old_engine, $old_depth, $old_nodes) = get_json_analysis_stats($filename);
+ my $new_depth = $json->{'depth'} // 0;
+ my $new_nodes = $json->{'nodes'} // 0;
+ if (!defined($old_engine) ||
+ $old_engine ne $json->{'id'}{'name'} ||
+ $new_depth > $old_depth ||
+ ($new_depth == $old_depth && $new_nodes >= $old_nodes)) {
+ atomic_set_contents($filename, $encoded);
}
}
-
- if ($black_check && $white_check) {
- return 'both';
- } elsif ($black_check) {
- return 'black';
- } elsif ($white_check) {
- return 'white';
- } else {
- return 'none';
- }
}
-sub can_reach {
- my ($board, $piece, $from_row, $from_col, $to_row, $to_col) = @_;
-
- # can't eat your own piece
- my $dest_piece = substr($board->[$to_row], $to_col, 1);
- if ($dest_piece ne '-') {
- return 0 if (($piece eq lc($piece)) == ($dest_piece eq lc($dest_piece)));
- }
-
- if (lc($piece) eq 'k') {
- return (abs($from_row - $to_row) <= 1 && abs($from_col - $to_col) <= 1);
- }
- if (lc($piece) eq 'r') {
- return 0 unless ($from_row == $to_row || $from_col == $to_col);
-
- # check that there's a clear passage
- if ($from_row == $to_row) {
- if ($from_col > $to_col) {
- ($to_col, $from_col) = ($from_col, $to_col);
- }
-
- for my $c (($from_col+1)..($to_col-1)) {
- my $middle_piece = substr($board->[$to_row], $c, 1);
- return 0 if ($middle_piece ne '-');
- }
-
- return 1;
- } else {
- if ($from_row > $to_row) {
- ($to_row, $from_row) = ($from_row, $to_row);
- }
-
- for my $r (($from_row+1)..($to_row-1)) {
- my $middle_piece = substr($board->[$r], $to_col, 1);
- return 0 if ($middle_piece ne '-');
- }
+sub atomic_set_contents {
+ my ($filename, $contents) = @_;
- return 1;
- }
- }
- if (lc($piece) eq 'b') {
- return 0 unless (abs($from_row - $to_row) == abs($from_col - $to_col));
-
- my $dr = ($to_row - $from_row) / abs($to_row - $from_row);
- my $dc = ($to_col - $from_col) / abs($to_col - $from_col);
-
- my $r = $from_row + $dr;
- my $c = $from_col + $dc;
+ open my $fh, ">", $filename . ".tmp"
+ or return;
+ print $fh $contents;
+ close $fh;
+ rename($filename . ".tmp", $filename);
+}
- while ($r != $to_row) {
- my $middle_piece = substr($board->[$r], $c, 1);
- return 0 if ($middle_piece ne '-');
-
- $r += $dr;
- $c += $dc;
- }
+sub get_json_analysis_stats {
+ my $filename = shift;
- return 1;
- }
- if (lc($piece) eq 'n') {
- my $diff_r = abs($from_row - $to_row);
- my $diff_c = abs($from_col - $to_col);
- return 1 if ($diff_r == 2 && $diff_c == 1);
- return 1 if ($diff_r == 1 && $diff_c == 2);
- return 0;
- }
- if ($piece eq 'q') {
- return (can_reach($board, 'r', $from_row, $from_col, $to_row, $to_col) ||
- can_reach($board, 'b', $from_row, $from_col, $to_row, $to_col));
- }
- if ($piece eq 'Q') {
- return (can_reach($board, 'R', $from_row, $from_col, $to_row, $to_col) ||
- can_reach($board, 'B', $from_row, $from_col, $to_row, $to_col));
- }
+ my ($engine, $depth, $nodes);
- # TODO: en passant
- if ($piece eq 'p') {
- # black pawn
- if ($to_col == $from_col && $to_row == $from_row + 1) {
- return ($dest_piece eq '-');
- }
- if ($to_col == $from_col && $from_row == 1 && $to_row == 3) {
- my $middle_piece = substr($board->[2], $to_col, 1);
- return ($dest_piece eq '-' && $middle_piece eq '-');
- }
- if (abs($to_col - $from_col) == 1 && $to_row == $from_row + 1) {
- return ($dest_piece ne '-');
- }
- return 0;
- }
- if ($piece eq 'P') {
- # white pawn
- if ($to_col == $from_col && $to_row == $from_row - 1) {
- return ($dest_piece eq '-');
- }
- if ($to_col == $from_col && $from_row == 6 && $to_row == 4) {
- my $middle_piece = substr($board->[5], $to_col, 1);
- return ($dest_piece eq '-' && $middle_piece eq '-');
- }
- if (abs($to_col - $from_col) == 1 && $to_row == $from_row - 1) {
- return ($dest_piece ne '-');
- }
- return 0;
+ open my $fh, "<", $filename
+ or return undef;
+ local $/ = undef;
+ eval {
+ my $json = JSON::XS::decode_json(<$fh>);
+ $engine = $json->{'id'}{'name'} // die;
+ $depth = $json->{'depth'} // 0;
+ $nodes = $json->{'nodes'} // 0;
+ };
+ close $fh;
+ if ($@) {
+ warn "Error in decoding $filename: $@";
+ return undef;
}
-
- # unknown piece
- return 0;
+ return ($engine, $depth, $nodes);
}
sub uciprint {
my ($engine, $msg) = @_;
- print { $engine->{'write'} } "$msg\n";
+ $engine->print($msg);
print UCILOG localtime() . " $engine->{'tag'} => $msg\n";
}
sub short_score {
- my ($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' . $mpv};
- } else {
return sprintf "M%3d", -$info->{'score_mate' . $mpv};
+ } else {
+ return sprintf "M%3d", $info->{'score_mate' . $mpv};
}
} else {
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv} * 0.01;
+ if ($score == 0) {
+ if ($info->{'tablebase'}) {
+ return "TB draw";
+ } else {
+ return " 0.00";
+ }
+ }
if ($invert) {
$score = -$score;
}
sub score_sort_key {
my ($info, $pos, $mpv, $invert) = @_;
- $invert //= 0;
- if ($pos->{'toplay'} eq 'B') {
- $invert = !$invert;
- }
-
if (defined($info->{'score_mate' . $mpv})) {
- if ($invert) {
- return -(99999 - $info->{'score_mate' . $mpv});
+ my $mate = $info->{'score_mate' . $mpv};
+ my $score;
+ if ($mate > 0) {
+ # Side to move mates
+ $score = 99999 - $mate;
} else {
- return 99999 - $info->{'score_mate' . $mpv};
+ # Side to move is getting mated (note the double negative for $mate)
+ $score = -99999 - $mate;
+ }
+ if ($invert) {
+ $score = -$score;
}
+ return $score;
} else {
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv};
} else {
if (exists($info->{'score_cp' . $mpv})) {
my $score = $info->{'score_cp' . $mpv} * 0.01;
+ if ($score == 0) {
+ if ($info->{'tablebase'}) {
+ return "Theoretical draw";
+ } else {
+ return "Score: 0.00";
+ }
+ }
if ($pos->{'toplay'} eq 'B') {
$score = -$score;
}
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, $tag) = @_;
- my ($uciread, $uciwrite);
- my $pid = IPC::Open2::open2($uciread, $uciwrite, $cmdline);
-
- my $engine = {
- pid => $pid,
- read => $uciread,
- readbuf => '',
- write => $uciwrite,
- info => {},
- ids => {},
- tag => $tag,
- };
-
- uciprint($engine, "uci");
-
- # gobble the options
- while (<$uciread>) {
- /uciok/ && last;
- handle_uci($engine, $_);
- }
-
- return $engine;
+sub schedule_tb_lookup {
+ return if (!defined($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 read_lines {
- my $engine = shift;
-
- #
- # Read until we've got a full line -- if the engine sends part of
- # a line and then stops we're pretty much hosed, but that should
- # never happen.
- #
- while ($engine->{'readbuf'} !~ /\n/) {
- my $tmp;
- my $ret = sysread $engine->{'read'}, $tmp, 4096;
-
- if (!defined($ret)) {
- next if ($!{EINTR});
- die "error in reading from the UCI engine: $!";
- } elsif ($ret == 0) {
- die "EOF from UCI engine";
+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'};
}
-
- $engine->{'readbuf'} .= $tmp;
- }
-
- # Blah.
- my @lines = ();
- while ($engine->{'readbuf'} =~ s/^([^\n]*)\n//) {
- my $line = $1;
- $line =~ tr/\r\n//d;
- push @lines, $line;
- }
- return @lines;
-}
-
-# Find all possible legal moves.
-sub calculate_refutation_moves {
- my $pos = shift;
- my $board = $pos->{'board'};
- my %refutation_moves = ();
- for my $col (0..7) {
- for my $row (0..7) {
- my $piece = substr($board->[$row], $col, 1);
-
- # Check that there's a piece of the right color on this square.
- next if ($piece eq '-');
- if ($pos->{'toplay'} eq 'W') {
- next if ($piece ne uc($piece));
+ my $state = $response->{'Response'}{'StateString'};
+ if ($state eq 'COMPLETE') {
+ my $pgn = Chess::PGN::Parse->new(undef, $response->{'Response'}{'Moves'});
+ if (!defined($pgn) || !$pgn->read_game()) {
+ warn "Error in parsing PGN\n";
} else {
- next if ($piece ne lc($piece));
- }
-
- for my $to_col (0..7) {
- for my $to_row (0..7) {
- next if ($col == $to_col && $row == $to_row);
- next unless (can_reach($board, $piece, $row, $col, $to_row, $to_col));
-
- my $promo = ""; # FIXME
- my $nb = make_move($board, $row, $col, $to_row, $to_col, $promo);
- my $check = in_check($nb);
- next if ($check eq 'both');
- if ($pos->{'toplay'} eq 'W') {
- next if ($check eq 'white');
- } else {
- next if ($check eq 'black');
- }
- my $move = move_to_uci_notation($row, $col, $to_row, $to_col, $promo);
- $refutation_moves{$move} = { depth => $second_engine_start_depth - 1, score_cp => 0, pv => '' };
+ $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 => $response->{'Response'}{'Score'},
+ };
+ output();
}
+ } elsif ($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;
}
- }
- return %refutation_moves;
-}
-sub give_new_move_to_second_engine {
- my $pos = shift;
-
- # Find the move that's been analyzed the shortest but is most promising.
- # Tie-break on UCI move representation.
- my $best_move = undef;
- for my $move (sort keys %refutation_moves) {
- if (!defined($best_move)) {
- $best_move = $move;
- next;
- }
- my $best = $refutation_moves{$best_move};
- my $this = $refutation_moves{$move};
+ # 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: $@";
- if ($this->{'depth'} < $best->{'depth'} ||
- ($this->{'depth'} == $best->{'depth'} && $this->{'score_cp'} < $best->{'score_cp'})) {
- $best_move = $move;
- next;
- }
+ # Don't try this one again, but don't block new lookups either.
+ $tb_lookup_running = 0;
}
+}
- my $m = $refutation_moves{$best_move};
- ++$m->{'depth'};
- uciprint($engine2, "position fen " . $pos->{'fen'} . " moves " . $best_move);
- uciprint($engine2, "go depth " . $m->{'depth'});
- $move_calculating_second_engine = $best_move;
+sub open_engine {
+ my ($cmdline, $tag, $cb) = @_;
+ return undef if (!defined($cmdline));
+ return Engine->open($cmdline, $tag, $cb);
}
sub col_letter_to_num {
return 7 - (ord(shift) - ord('1'));
}
-sub move_to_uci_notation {
- my ($from_row, $from_col, $to_row, $to_col, $promo) = @_;
- $promo //= "";
- return sprintf("%c%d%c%d%s", ord('a') + $from_col, 8 - $from_row, ord('a') + $to_col, 8 - $to_row, $promo);
+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_col, $from_row, $to_col, $to_row, $promo);
}
projects / remoteglot / blobdiff