(function() {
var board = null;
-var history = [];
+var game = new Chess();
+var fens = [];
var move_override = 0;
var includetransp = true;
});
}
-var get_game = function(skip_last_move) {
- var moves_to_drop = 0;
- if (skip_last_move === true) {
- moves_to_drop = 1;
- }
-
- var game = new Chess();
- for (var i = 0; i < move_override - moves_to_drop; ++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());
+ }
- var all_moves = game.history({ verbose: true });
- if (all_moves.length > 0) {
- var last_move = all_moves.pop();
+ 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');
fetch_analysis();
}
+var get_history_url = function() {
+ var history = game.history({ verbose: true }).map(function(x) { return x.san; });
+ history.length = move_override;
+ return '/?' + history.join(',');
+}
+
var fetch_analysis = function() {
- var game = get_game();
- var fen = game.fen();
+ var fen = current_display_fen();
$.ajax({
url: "/opening-stats.pl?fen=" + encodeURIComponent(fen) +
";includetransp=" + (includetransp ? 1 : 0)
[ "Move", TYPE_MOVE ],
[ "Games", TYPE_INTEGER ],
[ "%", TYPE_RATIO ],
+ [ "CGames", TYPE_INTEGER ],
+ [ "Comp%", TYPE_RATIO ],
[ "Win%", TYPE_RATIO ],
[ "WWin", TYPE_INTEGER ],
[ "%WW", TYPE_RATIO ],
var white = parseInt(move['white']);
var draw = parseInt(move['draw']);
var black = parseInt(move['black']);
+ var computer = parseInt(move['computer']);
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); // %.
+ line.push(computer); // CGames.
+ line.push(computer / num); // Comp%.
// 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);
td.appendChild(move_a);
$(move_a).text(line[j]);
} else if (headings[j][1] == TYPE_INTEGER) {
- add_td(tr, line[j]);
+ add_td(tr, line[j] || 0);
} else if (headings[j][1] == TYPE_FLOAT) {
- add_td(tr, line[j].toFixed(1));
+ if (isNaN(line[j]) || !isFinite(line[j])) {
+ add_td(tr, '');
+ } else {
+ add_td(tr, line[j].toFixed(1));
+ }
} else {
- add_td(tr, (100.0 * line[j]).toFixed(1) + "%");
+ if (isNaN(line[j]) || !isFinite(line[j])) {
+ add_td(tr, '');
+ } else {
+ add_td(tr, (100.0 * line[j]).toFixed(1) + "%");
+ }
}
}
}
window['set_includetransp'] = set_includetransp;
-var make_move = function(move) {
- if (move_override < history.length && history[move_override] == move) {
+var make_move = function(move, do_update) {
+ 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;
+ }
+
+ if (do_update !== false) {
+ update();
+ window.history.pushState(null, null, get_history_url());
}
- update();
}
window['make_move'] = make_move;
if (move_override > 0) {
--move_override;
update();
+ window.history.replaceState(null, null, get_history_url());
}
}
window['prev_move'] = prev_move;
var next_move = function() {
- if (move_override < history.length) {
+ if (move_override < game.history().length) {
++move_override;
update();
+ window.history.replaceState(null, null, get_history_url());
}
}
window['next_move'] = next_move;
-var set_move = function(n) {
+var set_move = function(n, do_update) {
move_override = n;
- update();
+ if (do_update !== false) {
+ update();
+ window.history.replaceState(null, null, get_history_url());
+ }
}
window['set_move'] = set_move;
// 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 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
+ });
+
+ make_move(pseudogame.history({ verbose: true }).pop().san);
+}
+
+var onpopstate = function() {
+ var old_moves = game.history({ verbose: true }).map(function(x) { return x.san; });
+ var new_moves = document.location.search.replace(/^\?/, "").split(",");
- var new_history = game.history({ verbose: true });
- history = [];
- for (var i = 0; i < new_history.length; ++i) {
- history.push(new_history[i].san);
+ if (new_moves.length == 1 && new_moves[0] == "") {
+ new_moves = [];
}
- move_override = history.length;
-};
-// 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());
+ var num_shared_moves;
+ for (num_shared_moves = 0; num_shared_moves < Math.min(old_moves.length, new_moves.length); ++num_shared_moves) {
+ if (old_moves[i] != new_moves[i]) {
+ break;
+ }
+ }
+
+ set_move(num_shared_moves, false);
+ for (var i = num_shared_moves; i < new_moves.length; ++i) {
+ make_move(new_moves[i], false);
+ }
update();
-};
+ window.history.replaceState(null, null, get_history_url());
+}
var init = function() {
// Create board.
onDrop: onDrop,
onSnapEnd: onSnapEnd
});
- update();
+
+ window.onpopstate = onpopstate;
+ onpopstate();
$(window).keyup(function(event) {
if (event.which == 39) {
projects / remoteglot-book / blobdiff