X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=Position.pm;h=9333bcd58af514badb9a7b31463a4c00763da609;hp=7834ca065185ad005be02cf06d252756b08dd3ae;hb=1856a6b8a4c1facbb3ff1df0f240acc9d378b315;hpb=8fcd3d2321344017e376668cb5d1f5ea7cb47c20

diff --git a/Position.pm b/Position.pm
index 7834ca0..9333bcd 100644
--- a/Position.pm
+++ b/Position.pm
@@ -4,6 +4,7 @@
 #
 use strict;
 use warnings;
+use MIME::Base64;
 
 require 'Board.pm';
 
@@ -28,7 +29,13 @@ sub new {
 	$pos->{'player_w'} =~ s/^W?[FCIG]M//;
 	$pos->{'player_b'} =~ s/^W?[FCIG]M//;
 	$pos->{'move_num'} = $x[26];
+	if ($x[27] =~ /([a-h][1-8])-([a-h][1-8])/) {
+		$pos->{'last_move_uci'} = $1 . $2;
+	} else {
+		$pos->{'last_move_uci'} = undef;
+	}
 	$pos->{'last_move'} = $x[29];
+	$pos->{'prettyprint_cache'} = {};
 
 	bless $pos, $class;
 	return $pos;
@@ -36,6 +43,8 @@ sub new {
 
 sub start_pos {
 	my ($class, $white, $black) = @_;
+	$white = "base64:" . MIME::Base64::encode_base64($white);
+	$black = "base64:" . MIME::Base64::encode_base64($black);
 	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");
 }
 
@@ -103,7 +112,21 @@ sub fen {
 
 sub to_json_hash {
 	my $pos = shift;
-	return { %$pos, board => undef, fen => $pos->fen() };
+	my $json = { %$pos, fen => $pos->fen() };
+	delete $json->{'board'};
+	delete $json->{'prettyprint_cache'};
+	delete $json->{'black_castle_k'};
+	delete $json->{'black_castle_q'};
+	delete $json->{'white_castle_k'};
+	delete $json->{'white_castle_q'};
+	delete $json->{'time_since_100move_rule_reset'};
+	if ($json->{'player_w'} =~ /^base64:(.*)$/) {
+		$json->{'player_w'} = MIME::Base64::decode_base64($1);
+	}
+	if ($json->{'player_b'} =~ /^base64:(.*)$/) {
+		$json->{'player_b'} = MIME::Base64::decode_base64($1);
+	}
+	return $json;
 }
 
 sub parse_pretty_move {
@@ -111,6 +134,11 @@ sub parse_pretty_move {
 	return $pos->{'board'}->parse_pretty_move($move, $pos->{'toplay'});
 }
 
+sub num_pieces {
+	my ($pos) = @_;
+	return $pos->{'board'}->num_pieces();
+}
+
 # Returns a new Position object.
 sub make_move {
         my ($pos, $from_row, $from_col, $to_row, $to_col, $promo) = @_;
@@ -167,13 +195,56 @@ sub make_move {
 	}
 	$np->{'player_w'} = $pos->{'player_w'};
 	$np->{'player_b'} = $pos->{'player_b'};
-	$np->{'last_move'} = '(move)';  # FIXME
+	my ($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;
 }
 
+# Returns a new Position object, and the parsed UCI move.
+sub make_pretty_move {
+	my ($pos, $move) = @_;
+
+	my ($from_row, $from_col, $to_row, $to_col, $promo) = $pos->parse_pretty_move($move);
+	my $uci_move = Board::move_to_uci_notation($from_row, $from_col, $to_row, $to_col, $promo);
+	$pos = $pos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
+	return ($pos, $uci_move);
+}
+
 sub _pos_to_square {
         my ($row, $col) = @_;
         return sprintf("%c%d", ord('a') + $col, 8 - $row);
 }
 
+sub apply_uci_pv {
+	my ($pos, @pv) = @_;
+
+	my $pvpos = $pos;
+	for my $pv_move (@pv) {
+		my ($from_row, $from_col, $to_row, $to_col, $promo) = _parse_uci_move($pv_move);
+		$pvpos = $pvpos->make_move($from_row, $from_col, $to_row, $to_col, $promo);
+	}
+
+	return $pvpos;
+}
+
+sub _col_letter_to_num {
+	return ord(shift) - ord('a');
+}
+
+sub _row_letter_to_num {
+	return 7 - (ord(shift) - ord('1'));
+}
+
+sub _parse_uci_move {
+        my $move = shift;
+        my $from_col = _col_letter_to_num(substr($move, 0, 1));
+        my $from_row = _row_letter_to_num(substr($move, 1, 1));
+        my $to_col   = _col_letter_to_num(substr($move, 2, 1));
+        my $to_row   = _row_letter_to_num(substr($move, 3, 1));
+        my $promo    = substr($move, 4, 1);
+        return ($from_row, $from_col, $to_row, $to_col, $promo);
+}
+
 1;