Support starting from a nonstandard position.

[remoteglot] / Board.pm

diff --git a/Board.pm b/Board.pm
index 8573bd8f29814e7cdce82555332b4eda3dc612b0..6df8ecae1326b4bb083f66598c3e5b59a1455b3b 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) = @_;
        
@@ -514,22 +478,22 @@ sub _prettyprint_move_no_check_or_mate {
 
        # white short castling
        if ($move eq 'e1g1' && $piece eq 'K') {
-               return '0-0';
+               return 'O-O';
        }
 
        # white long castling
        if ($move eq 'e1c1' && $piece eq 'K') {
-               return '0-0-0';
+               return 'O-O-O';
        }
 
        # black short castling
        if ($move eq 'e8g8' && $piece eq 'k') {
-               return '0-0';
+               return 'O-O';
        }
 
        # black long castling
        if ($move eq 'e8c8' && $piece eq 'k') {
-               return '0-0-0';
+               return 'O-O-O';
        }
 
        my $pretty;
@@ -541,12 +505,12 @@ sub _prettyprint_move_no_check_or_mate {
                        $pretty = substr($move, 0, 1) . 'x' . _pos_to_square($to_row, $to_col);
                } else {
                        $pretty = _pos_to_square($to_row, $to_col);
+               }
 
-                       if (defined($promo) && $promo ne '') {
-                               # promotion
-                               $pretty .= "=";
-                               $pretty .= uc($promo);
-                       }
+               if (defined($promo) && $promo ne '') {
+                       # promotion
+                       $pretty .= "=";
+                       $pretty .= uc($promo);
                }
                return $pretty;
        }