Fix (?) an issue where going from a display line all the back the root would hit...
[remoteglot] / Position.pm
index 9d90cfc..c3dbcca 100644 (file)
@@ -38,6 +38,7 @@ sub new {
        }
        $pos->{'last_move'} = $x[29];
        $pos->{'prettyprint_cache'} = {};
+       $pos->{'tbprobe_cache'} = {};
 
        bless $pos, $class;
        return $pos;
@@ -50,6 +51,40 @@ sub start_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;
 
@@ -131,6 +166,7 @@ sub to_json_hash {
        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'};
@@ -157,7 +193,7 @@ sub num_pieces {
 
 # 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);
@@ -211,8 +247,12 @@ sub make_move {
        }
        $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;