Remove bitpacked_fen, which is only really in use for the book (which is forked off...
authorSteinar H. Gunderson <sgunderson@bigfoot.com>
Sat, 6 Jan 2018 11:18:09 +0000 (12:18 +0100)
committerSteinar H. Gunderson <sgunderson@bigfoot.com>
Sat, 6 Jan 2018 12:00:28 +0000 (13:00 +0100)
Board.pm
Position.pm

index 3e0fd33..6df8eca 100644 (file)
--- a/Board.pm
+++ b/Board.pm
@@ -233,42 +233,6 @@ sub fen {
 # Returns a compact bit string describing the same data as fen().
 # This is encoded using a Huffman-like encoding, and should be
 # typically about 1/3 the number of bytes.
-sub bitpacked_fen {
-       my ($board) = @_;
-       my $bits = "";
-
-       for my $row (0..7) {
-               for my $col (0..7) {
-                       my $piece = $board->[$row][$col];
-                       if ($piece eq '-') {
-                               $bits .= "0";
-                               next;
-                       }
-
-                       my $color = (lc($piece) eq $piece) ? 0 : 1;
-                       $bits .= "1" . $color;
-
-                       if (lc($piece) eq 'p') {
-                               $bits .= "0";
-                       } elsif (lc($piece) eq 'n') {
-                               $bits .= "100";
-                       } elsif (lc($piece) eq 'b') {
-                               $bits .= "101";
-                       } elsif (lc($piece) eq 'r') {
-                               $bits .= "1110";
-                       } elsif (lc($piece) eq 'q') {
-                               $bits .= "11110";
-                       } elsif (lc($piece) eq 'k') {
-                               $bits .= "11111";
-                       } else {
-                               die "Unknown piece $piece";
-                       }
-               }
-       }
-
-       return pack('b*', $bits);
-}
-
 sub can_reach {
        my ($board, $piece, $from_row, $from_col, $to_row, $to_col) = @_;
        
index c3dbcca..39b89ac 100644 (file)
@@ -132,35 +132,6 @@ sub fen {
        return $fen;
 }
 
-# Returns a compact bit string describing the same data as fen(),
-# except for the half-move and full-move clock.
-sub bitpacked_fen {
-       my $pos = shift;
-       my $board = $pos->{'board'}->bitpacked_fen();
-
-       my $bits = "";
-       if ($pos->{'toplay'} eq 'W') {
-               $bits .= "0";
-       } else {
-               $bits .= "1";
-       }
-
-       $bits .= $pos->{'white_castle_k'};
-       $bits .= $pos->{'white_castle_q'};
-       $bits .= $pos->{'black_castle_k'};
-       $bits .= $pos->{'black_castle_q'};
-
-       my $col = $pos->{'ep_file_num'};
-       if ($col == -1) {
-               $bits .= "0";
-       } else {
-               $bits .= "1";
-               $bits .= (qw(000 001 010 011 100 101 110 111))[$col];
-       }
-
-       return $board . pack('b*', $bits);
-}
-
 sub to_json_hash {
        my $pos = shift;
        my $json = { %$pos, fen => $pos->fen() };