X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=Position.pm;h=c3dbccaedde8b026a9585410c64134798e650d04;hp=272cadb78d2124275556e16df5bc7403b19cbe6d;hb=5a9dbd3f72666ce02396c30d1b74dae3ab32d40b;hpb=65aa4e3d31851a0b504f55ec9907b4fe4f9f8966

diff --git a/Position.pm b/Position.pm
index 272cadb..c3dbcca 100644
--- a/Position.pm
+++ b/Position.pm
@@ -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'};