/** @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');
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,
// the UI should be to expand the history.
pv = '(<a class="move" href="javascript:collapse_history(false)">…</a>) ';
i = pretty_pv.length - opt_limit;
- if (i < 0) {
- i = 0;
- }
if (i % 2 == 1) {
++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';
} 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.
move = source + "-" + target;
hiddenboard.move(move, false);
+ pos = hiddenboard.position();
// Do promotion if needed.
if (promo != "") {
}
var init = function() {
+ unique = get_unique();
+
// Create board.
board = new window.ChessBoard('board', 'start');
hiddenboard = new window.ChessBoard('hiddenboard', 'start');