}
$pos->{'last_move'} = $x[29];
$pos->{'prettyprint_cache'} = {};
+ $pos->{'tbprobe_cache'} = {};
bless $pos, $class;
return $pos;
return $class->new("<12> rnbqkbnr pppppppp -------- -------- -------- -------- PPPPPPPP RNBQKBNR W -1 1 1 1 1 0 dummygamenum $white $black -2 dummytime dummyincrement 39 39 dummytime dummytime 1 none (0:00) none 0 0 0");
}
+sub from_fen {
+ my ($class, $fen) = @_;
+ my ($board, $toplay, $castling, $ep_square, $halfmove_clock, $fullmove_clock) = split / /, $fen;
+
+ my $pos = {};
+ $board =~ s/(\d)/"-"x$1/ge;
+ $pos->{'board'} = Board->new(split /\//, $board);
+ $pos->{'toplay'} = uc($toplay);
+
+ if ($ep_square =~ /^([a-h])/) {
+ $pos->{'ep_file_num'} = ord($1) - ord('a');
+ } else {
+ $pos->{'ep_file_num'} = -1;
+ }
+
+ $pos->{'white_castle_k'} = ($castling =~ /K/) ? 1 : 0;
+ $pos->{'white_castle_q'} = ($castling =~ /Q/) ? 1 : 0;
+ $pos->{'black_castle_k'} = ($castling =~ /k/) ? 1 : 0;
+ $pos->{'black_castle_q'} = ($castling =~ /q/) ? 1 : 0;
+ $pos->{'time_since_100move_rule_reset'} = $halfmove_clock // 0;
+ $pos->{'player_w'} = 'white';
+ $pos->{'player_b'} = 'black';
+ $pos->{'white_clock'} = 0;
+ $pos->{'black_clock'} = 0;
+ $pos->{'move_num'} = $fullmove_clock // 0;
+ $pos->{'last_move_uci'} = undef;
+ $pos->{'last_move'} = undef;
+ $pos->{'prettyprint_cache'} = {};
+ $pos->{'tbprobe_cache'} = {};
+
+ bless $pos, $class;
+ return $pos;
+}
+
sub fen {
my $pos = shift;
my $json = { %$pos, fen => $pos->fen() };
delete $json->{'board'};
delete $json->{'prettyprint_cache'};
+ delete $json->{'tbprobe_cache'};
delete $json->{'black_castle_k'};
delete $json->{'black_castle_q'};
delete $json->{'white_castle_k'};
# Returns a new Position object.
sub make_move {
- my ($pos, $from_row, $from_col, $to_row, $to_col, $promo) = @_;
+ my ($pos, $from_row, $from_col, $to_row, $to_col, $promo, $pretty_move) = @_;
my $from_square = _pos_to_square($from_row, $from_col);
my $to_square = _pos_to_square($to_row, $to_col);
}
$np->{'player_w'} = $pos->{'player_w'};
$np->{'player_b'} = $pos->{'player_b'};
- my ($move, $nb) = $pos->{'board'}->prettyprint_move($from_row, $from_col, $to_row, $to_col, $promo);
- $np->{'last_move'} = $move;
+ if (defined($pretty_move)) {
+ $np->{'last_move'} = $pretty_move;
+ } else {
+ my ($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;