Key the table by position, not position+move. Makes for more complex exploration...

[remoteglot-book] / www / opening-stats.pl

diff --git a/www/opening-stats.pl b/www/opening-stats.pl
index d74f1add083bddcc89ec6551b4091df760f0e16e..b62a30b605a23b787c00f5e4bf919bf852fb0c16 100755 (executable)
--- a/www/opening-stats.pl
+++ b/www/opening-stats.pl
@@ -5,24 +5,34 @@ use CGI;
 use JSON::XS;
 use lib '..';
 use Position;
+use IPC::Open2;
 
 our %openings = ();
 read_openings();
 
 my $cgi = CGI->new;
-my $fen = $cgi->param('fen');
+my ($chld_out, $chld_in);
+my $pid = IPC::Open2::open2($chld_out, $chld_in, "../binlookup", "../open.mtbl", "40");
+
+# Root position. Basically ignore everything except the opening (and later some root game stuff).
+my $fen = $cgi->param('fen') // 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1';
 my $pos = Position->from_fen($fen);
 my $hex = unpack('H*', $pos->bitpacked_fen);
-open my $fh, "-|", "../binlookup", "../open.mtbl", $hex
-       or die "../binlookup: $!";
+print $chld_in $hex, "\n";
+my $line = <$chld_out>;
 
-my $opening;
+my ($white, $draw, $black, $opening_num, $white_avg_elo, $black_avg_elo, $num_elo, $timestamp, @moves) = split / /, $line;
+my $opening = $openings{$opening_num} // 'A00: Start position';
 
-my @moves = ();
-while (<$fh>) {
-       chomp;
-       my ($move, $white, $draw, $black, $opening_num, $white_avg_elo, $black_avg_elo, $num_elo) = split;
-       push @moves, {
+# Explore one move out.
+my @json_moves = ();
+for my $move (@moves) {
+       my ($np, $uci_move) = $pos->make_pretty_move($move);
+       my $hex = unpack('H*', $np->bitpacked_fen);
+       print $chld_in $hex, "\n";
+       my $line = <$chld_out>;
+       my ($white, $draw, $black, $opening_num, $white_avg_elo, $black_avg_elo, $num_elo) = split / /, $line;
+       push @json_moves, {
                move => $move,
                white => $white * 1,
                draw => $draw * 1,
@@ -31,14 +41,10 @@ while (<$fh>) {
                black_avg_elo => $black_avg_elo * 1,
                num_elo => $num_elo * 1
        };
-       $opening = $openings{$opening_num};
 }
-close $fh;
-
-@moves = sort { num($b) <=> num($a) } @moves;
 
 print $cgi->header(-type=>'application/json');
-print JSON::XS::encode_json({ moves => \@moves, opening => $opening });
+print JSON::XS::encode_json({ moves => \@json_moves, opening => $opening });
 
 sub num {
        my $x = shift;