#
use strict;
use warnings;
+use MIME::Base64;
require 'Board.pm';
$pos->{'player_w'} =~ s/^W?[FCIG]M//;
$pos->{'player_b'} =~ s/^W?[FCIG]M//;
$pos->{'move_num'} = $x[26];
+ if ($x[27] =~ /([a-h][1-8])-([a-h][1-8])/) {
+ $pos->{'last_move_uci'} = $1 . $2;
+ } else {
+ $pos->{'last_move_uci'} = undef;
+ }
$pos->{'last_move'} = $x[29];
+ $pos->{'prettyprint_cache'} = {};
bless $pos, $class;
return $pos;
sub start_pos {
my ($class, $white, $black) = @_;
+ $white = "base64:" . MIME::Base64::encode_base64($white);
+ $black = "base64:" . MIME::Base64::encode_base64($black);
return $class->new("<12> rnbqkbnr pppppppp -------- -------- -------- -------- PPPPPPPP RNBQKBNR W -1 1 1 1 1 0 dummygamenum $white $black -2 dummytime dummyincrement 39 39 dummytime dummytime 1 none (0:00) none 0 0 0");
}
sub to_json_hash {
my $pos = shift;
- return { %$pos, board => undef, fen => $pos->fen() };
+ my $json = { %$pos, board => undef, prettyprint_cache => undef, fen => $pos->fen() };
+ if ($json->{'player_w'} =~ /^base64:(.*)$/) {
+ $json->{'player_w'} = MIME::Base64::decode_base64($1);
+ }
+ if ($json->{'player_b'} =~ /^base64:(.*)$/) {
+ $json->{'player_b'} = MIME::Base64::decode_base64($1);
+ }
+ return $json;
}
sub parse_pretty_move {
return $pos->{'board'}->parse_pretty_move($move, $pos->{'toplay'});
}
+sub num_pieces {
+ my ($pos) = @_;
+ return $pos->{'board'}->num_pieces();
+}
+
# Returns a new Position object.
sub make_move {
my ($pos, $from_row, $from_col, $to_row, $to_col, $promo) = @_;
}
$np->{'player_w'} = $pos->{'player_w'};
$np->{'player_b'} = $pos->{'player_b'};
- $np->{'last_move'} = '(move)'; # FIXME
+ my ($move, $nb) = $pos->{'board'}->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
+ $np->{'last_move'} = $move;
+ $np->{'last_move_uci'} = Board::move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
+
return bless $np;
}
return sprintf("%c%d", ord('a') + $col, 8 - $row);
}
+sub apply_uci_pv {
+ my ($pos, @pv) = @_;
+
+ my $pvpos = $pos;
+ for my $pv_move (@pv) {
+ my ($from_row, $from_col, $to_row, $to_col, $promo) = _parse_uci_move($pv_move);
+ $pvpos = $pvpos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
+ }
+
+ return $pvpos;
+}
+
+sub _col_letter_to_num {
+ return ord(shift) - ord('a');
+}
+
+sub _row_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);
+}
+
1;