/** @type {window.ChessBoard} @private */
var board = null;
-/** @type {window.ChessBoard} @private */
-var hiddenboard = null;
-
/** @type {Array.<{
* from_col: number,
* from_row: number,
/** @type {?jQuery} @private */
var highlighted_move = null;
-/** @type {!number} @private */
-var unique = Math.random();
+/** @type {?number} @private */
+var unique = null;
/** The current position on the board, represented as a FEN string.
* @type {?string}
/** @type {?number} @private */
var current_display_move = null;
+var supports_html5_storage = function() {
+ try {
+ return 'localStorage' in window && window['localStorage'] !== null;
+ } catch (e) {
+ return false;
+ }
+}
+
+// Make the unique token persistent so people refreshing the page won't count twice.
+// Of course, you can never fully protect against people deliberately wanting to spam.
+var get_unique = function() {
+ var use_local_storage = supports_html5_storage();
+ if (use_local_storage && localStorage['unique']) {
+ return localStorage['unique'];
+ }
+ var unique = Math.random();
+ if (use_local_storage) {
+ localStorage['unique'] = unique;
+ }
+ return unique;
+}
+
var request_update = function() {
$.ajax({
- url: "http://analysis.sesse.net/analysis.pl?ims=" + ims + "&unique=" + unique
- //url: "http://analysis.sesse.net:5000/analysis.pl?ims=" + ims + "&unique=" + unique
+ url: "/analysis.pl?ims=" + ims + "&unique=" + unique
}).done(function(data, textstatus, xhr) {
ims = xhr.getResponseHeader('X-Remoteglot-Last-Modified');
var num_viewers = xhr.getResponseHeader('X-Remoteglot-Num-Viewers');
/**
* @param {!string} fen
* @param {Array.<string>} uci_pv
- * @param {Array.<string>} pretty_pv
* @param {number} move_num
* @param {!string} toplay
* @param {number=} opt_limit
* @param {boolean=} opt_showlast
*/
-var add_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, opt_limit, opt_showlast) {
+var add_pv = function(fen, uci_pv, move_num, toplay, opt_limit, opt_showlast) {
+ var hiddenboard = new Chess();
+ hiddenboard.load(fen);
+ for (var i = 0; i < uci_pv.length; ++i) {
+ hiddenboard.move(ucimove_to_chessjs_move(uci_pv[i]));
+ }
+ var pretty_pv = hiddenboard.history();
+
display_lines.push({
start_fen: fen,
uci_pv: uci_pv,
var print_pv = function(line_num, pretty_pv, move_num, toplay, opt_limit, opt_showlast) {
var pv = '';
var i = 0;
- if (opt_limit && opt_showlast) {
+ if (opt_limit && opt_showlast && pretty_pv.length > opt_limit) {
// Truncate the PV at the beginning (instead of at the end).
// We assume here that toplay is 'W'. We also assume that if
// opt_showlast is set, then it is the history, and thus,
++i;
}
move_num += i / 2;
- } else if (toplay == 'B') {
+ } else if (toplay == 'B' && pretty_pv.length > 0) {
var move = "<a class=\"move\" id=\"automove" + line_num + "-0\" href=\"javascript:show_line(" + line_num + ", " + 0 + ");\">" + pretty_pv[0] + "</a>";
pv = move_num + '. … ' + move;
toplay = 'W';
}
var update_history = function() {
- if (display_lines[0] === null) {
+ if (display_lines[0] === null || display_lines[0].pretty_pv.length == 0) {
$("#history").html("No history");
} else if (truncate_display_history) {
$("#history").html(print_pv(0, display_lines[0].pretty_pv, 1, 'W', 8, true));
var pv_td = document.createElement("td");
tr.appendChild(pv_td);
$(pv_td).addClass("pv");
- $(pv_td).html(add_pv(fen, line['pv_uci'], line['pv_pretty'], move_num, toplay, 10));
+ $(pv_td).html(add_pv(fen, line['pv_uci'], move_num, toplay, 10));
tbl.append(tr);
}
} else {
headline = 'Analysis';
}
+ var last_move;
if (data['position']['last_move'] !== 'none') {
- headline += ' after '
if (data['position']['toplay'] == 'W') {
- headline += (data['position']['move_num']-1) + '… ';
+ last_move = (data['position']['move_num']-1) + '… ';
} else {
- headline += data['position']['move_num'] + '. ';
+ last_move = data['position']['move_num'] + '. ';
}
- headline += data['position']['last_move'];
+ last_move += data['position']['last_move'];
+
+ headline += ' after ' + last_move;
+ } else {
+ last_move = null;
}
$("#headline").text(headline);
$("#score").text(data['score']);
}
+ var title_elems = [];
+ if (data['short_score'] !== undefined && data['short_score'] !== null) {
+ title_elems.push(data['short_score']);
+ }
+ if (last_move !== null) {
+ title_elems.push(last_move);
+ }
+
+ if (title_elems.length != 0) {
+ document.title = '(' + title_elems.join(', ') + ') analysis.sesse.net';
+ } else {
+ document.title = 'analysis.sesse.net';
+ }
+
// The search stats.
- if (data['nodes'] && data['nps'] && data['depth']) {
+ if (data['tablebase'] == 1) {
+ $("#searchstats").text("Tablebase result");
+ } else if (data['nodes'] && data['nps'] && data['depth']) {
var stats = thousands(data['nodes']) + ' nodes, ' + thousands(data['nps']) + ' nodes/sec, depth ' + data['depth'] + ' ply';
if (data['seldepth']) {
stats += ' (' + data['seldepth'] + ' selective)';
}
$("#searchstats").text(stats);
+ } else {
+ $("#searchstats").text("");
}
// Update the board itself.
// Print the history.
if (data['position']['history']) {
- add_pv('start', data['position']['history'], data['position']['pretty_history'], 1, 'W', 8, true);
+ add_pv('start', data['position']['history'], 1, 'W', 8, true);
} else {
display_lines.push(null);
}
update_history();
// Print the PV.
- $("#pv").html(add_pv(data['position']['fen'], data['pv_uci'], data['pv_pretty'], data['position']['move_num'], data['position']['toplay']));
+ $("#pv").html(add_pv(data['position']['fen'], data['pv_uci'], data['position']['move_num'], data['position']['toplay']));
// Update the PV arrow.
clear_arrows();
$("#nextmove").html("<a href=\"javascript:next_move();\">Next</a></span>");
}
- hiddenboard.position(current_display_line.start_fen, false);
+ var hiddenboard = new Chess();
+ hiddenboard.load(current_display_line.start_fen);
for (var i = 0; i <= current_display_move; ++i) {
- var pos = hiddenboard.position();
- var move = current_display_line.uci_pv[i];
- var source = move.substr(0, 2);
- var target = move.substr(2, 2);
- var promo = move.substr(4, 1);
-
- // Check if we need to do en passant.
- var piece = pos[source];
- if (piece == "wP" || piece == "bP") {
- if (source.substr(0, 1) != target.substr(0, 1) &&
- pos[target] === undefined) {
- var ep_square = target.substr(0, 1) + source.substr(1, 1);
- delete pos[ep_square];
- hiddenboard.position(pos, false);
- }
- }
-
- move = source + "-" + target;
- hiddenboard.move(move, false);
-
- // Do promotion if needed.
- if (promo != "") {
- pos[target] = pos[target].substr(0, 1) + promo.toUpperCase();
- hiddenboard.position(pos, false);
- }
-
- // chessboard.js does not automatically move the rook on castling
- // (issue #51; marked as won't fix), so update it ourselves.
- if (move == "e1-g1" && hiddenboard.position().g1 == "wK") { // white O-O
- hiddenboard.move("h1-f1", false);
- } else if (move == "e1-c1" && hiddenboard.position().c1 == "wK") { // white O-O-O
- hiddenboard.move("a1-d1", false);
- } else if (move == "e8-g8" && hiddenboard.position().g8 == "bK") { // black O-O
- hiddenboard.move("h8-f8", false);
- } else if (move == "e8-c8" && hiddenboard.position().c8 == "bK") { // black O-O-O
- hiddenboard.move("a8-d8", false);
- }
+ hiddenboard.move(ucimove_to_chessjs_move(current_display_line.uci_pv[i]));
}
highlighted_move = $("#automove" + current_display_line.line_number + "-" + current_display_move);
highlighted_move.addClass('highlight');
- board.position(hiddenboard.position());
+ board.position(hiddenboard.fen());
+}
+
+var ucimove_to_chessjs_move = function(move) {
+ var source = move.substr(0, 2);
+ var target = move.substr(2, 2);
+ var promo = move.substr(4, 1);
+
+ if (promo === '') {
+ return { from: source, to: target };
+ } else {
+ return { from: source, to: target, promotion: promo };
+ }
}
var init = function() {
+ unique = get_unique();
+
// Create board.
board = new window.ChessBoard('board', 'start');
- hiddenboard = new window.ChessBoard('hiddenboard', 'start');
request_update();
$(window).resize(function() {
projects / remoteglot / blobdiff