(function() {
var board = null;
-var history = [];
+var game = new Chess();
+var fens = [];
var move_override = 0;
+var includetransp = true;
var entity_map = {
"&": "&",
});
}
-var get_game = function() {
- var game = new Chess();
- for (var i = 0; i < move_override; ++i) {
- game.move(history[i]);
+var current_display_fen = function() {
+ if (move_override == 0) {
+ return 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1';
+ } else {
+ return fens[move_override - 1];
}
- return game;
}
var update = function() {
var text = "";
+ var history = game.history({ verbose: true });
for (var i = 0; i < history.length; ++i) {
if (i % 2 == 0) {
text += (i/2 + 1) + ". ";
}
if (i + 1 == move_override) {
- text += '<strong>' + history[i] + '</strong>';
+ text += '<strong>' + history[i].san + '</strong>';
} else {
- text += '<a href="javascript:set_move(' + (i + 1) + ')">' + history[i] + '</a>';
+ text += '<a href="javascript:set_move(' + (i + 1) + ')">' + history[i].san + '</a>';
}
text += " ";
}
$('#gamehistory').html(text);
- var game = get_game();
- board.position(game.fen());
+ if (board.fen() != current_display_fen()) {
+ board.position(current_display_fen());
+ }
+
+ if (move_override > 0) {
+ var last_move = history[move_override - 1];
+ var highlight_from = last_move.from;
+ var highlight_to = last_move.to;
+ $("#board").find('.square-55d63').removeClass('nonuglyhighlight');
+ $("#board").find('.square-' + highlight_from).addClass('nonuglyhighlight');
+ $("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight');
+ }
+
fetch_analysis();
}
var fetch_analysis = function() {
- var game = get_game();
+ var fen = current_display_fen();
$.ajax({
- url: "/opening-stats.pl?fen=" + encodeURIComponent(game.fen())
+ url: "/opening-stats.pl?fen=" + encodeURIComponent(fen) +
+ ";includetransp=" + (includetransp ? 1 : 0)
}).done(function(data, textstatus, xhr) {
show_lines(data, game);
});
}
var lines = [];
+ var transpose_only = [];
for (var i = 0; i < moves.length; ++i) {
var move = moves[i];
var line = [];
var black = parseInt(move['black']);
line.push(move['move']); // Move.
+ transpose_only.push(move['transpose_only']);
var num = white + draw + black;
line.push(num); // N.
line.push(num / total_num); // %.
// Win%.
var white_win_ratio = (white + 0.5 * draw) / num;
- var win_ratio = (game.turn() == 'w') ? white_win_ratio : 1.0 - white_win_ratio;
+ var win_ratio = (move_override % 2 == 0) ? white_win_ratio : 1.0 - white_win_ratio;
line.push(win_ratio);
line.push(white); // WWin.
var win_elo = -400.0 * Math.log(1.0 / white_win_ratio - 1.0) / Math.LN10;
win_elo -= (move['white_avg_elo'] - move['black_avg_elo']);
white_win_ratio = 1.0 / (1.0 + Math.pow(10, win_elo / -400.0));
- win_ratio = (game.turn() == 'w') ? white_win_ratio : 1.0 - white_win_ratio;
+ win_ratio = (move_override % 2 == 0) ? white_win_ratio : 1.0 - white_win_ratio;
line.push(win_ratio);
} else {
line.push(null);
if (line[0] === undefined) {
$(tr).addClass("totals");
+ } else if (transpose_only[i]) {
+ $(tr).addClass("transponly");
}
for (var j = 0; j < line.length; ++j) {
}
}
+var set_includetransp = function(value) {
+ includetransp = value;
+ update();
+}
+window['set_includetransp'] = set_includetransp;
+
var make_move = function(move) {
- if (move_override < history.length && history[move_override] == move) {
+ var history = game.history({ verbose: true });
+ if (move_override < history.length && history[move_override].san == move) {
// User effectively only moved forward in history.
++move_override;
} else {
- history.length = move_override;
- history.push(move);
- move_override = history.length;
+ var moves = game.history();
+ // Truncate the history if needed.
+ if (move_override < moves.length) {
+ game = new Chess();
+ for (var i = 0; i < move_override; ++i) {
+ game.move(moves[i]);
+ }
+ fens.length = move_override;
+ }
+ game.move(move);
+ fens.push(game.fen());
+ ++move_override;
}
update();
}
window['prev_move'] = prev_move;
var next_move = function() {
- if (move_override < history.length) {
+ if (move_override < game.history().length) {
++move_override;
update();
}
// almost all of this stuff comes from the chessboard.js example page
var onDragStart = function(source, piece, position, orientation) {
- var game = get_game();
- if (game.game_over() === true ||
- (game.turn() === 'w' && piece.search(/^b/) !== -1) ||
- (game.turn() === 'b' && piece.search(/^w/) !== -1)) {
+ var pseudogame = new Chess(current_display_fen());
+ if (pseudogame.game_over() === true ||
+ (pseudogame.turn() === 'w' && piece.search(/^b/) !== -1) ||
+ (pseudogame.turn() === 'b' && piece.search(/^w/) !== -1)) {
return false;
}
}
var onDrop = function(source, target) {
// see if the move is legal
- var game = get_game();
- var move = game.move({
+ var pseudogame = new Chess(current_display_fen());
+ var move = pseudogame.move({
from: source,
to: target,
promotion: 'q' // NOTE: always promote to a queen for example simplicity
// illegal move
if (move === null) return 'snapback';
+}
- var new_history = game.history({ verbose: true });
- history = [];
- for (var i = 0; i < new_history.length; ++i) {
- history.push(new_history[i].san);
- }
- move_override = history.length;
- update();
-};
+var onSnapEnd = function(source, target) {
+ var pseudogame = new Chess(current_display_fen());
+ var move = pseudogame.move({
+ from: source,
+ to: target,
+ promotion: 'q' // NOTE: always promote to a queen for example simplicity
+ });
-// update the board position after the piece snap
-// for castling, en passant, pawn promotion
-var onSnapEnd = function() {
- var game = get_game();
- board.position(game.fen());
- fetch_analysis();
-};
+ make_move(pseudogame.history({ verbose: true }).pop().san);
+}
var init = function() {
// Create board.
projects / remoteglot-book / blobdiff