var ims = 0;
/** @type {boolean} @private */
-var sort_refutation_lines_by_score = false;
+var sort_refutation_lines_by_score = true;
+
+/** @type {boolean} @private */
+var truncate_display_history = true;
/** @type {!string|undefined} @private */
var highlight_from = undefined;
/** @type {!string|undefined} @private */
var highlight_to = undefined;
-/** @type {!number} @private */
-var unique = Math.random();
+/** @type {?jQuery} @private */
+var highlighted_move = null;
+
+/** @type {?number} @private */
+var unique = null;
/** The current position on the board, represented as a FEN string.
* @type {?string}
/** @typedef {{
* start_fen: string,
* uci_pv: Array.<string>,
- * pretty_pv: Array.<string>
+ * pretty_pv: Array.<string>,
+ * line_num: number
* }} DisplayLine
*/
/** @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
* @param {number} move_num
* @param {!string} toplay
* @param {number=} opt_limit
+ * @param {boolean=} opt_showlast
*/
-var print_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, opt_limit) {
+var add_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, opt_limit, opt_showlast) {
display_lines.push({
start_fen: fen,
uci_pv: uci_pv,
- pretty_pv: pretty_pv
+ pretty_pv: pretty_pv,
+ line_number: display_lines.length
});
+ return print_pv(display_lines.length - 1, pretty_pv, move_num, toplay, opt_limit, opt_showlast);
+}
+/**
+ * @param {number} line_num
+ * @param {Array.<string>} pretty_pv
+ * @param {number} move_num
+ * @param {!string} toplay
+ * @param {number=} opt_limit
+ * @param {boolean=} opt_showlast
+ */
+var print_pv = function(line_num, pretty_pv, move_num, toplay, opt_limit, opt_showlast) {
var pv = '';
var i = 0;
- if (toplay == 'B') {
- var move = "<a class=\"move\" href=\"javascript:show_line(" + (display_lines.length - 1) + ", " + 0 + ");\">" + pretty_pv[0] + "</a>";
+ 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 % 2 == 1) {
+ ++i;
+ }
+ move_num += i / 2;
+ } else if (toplay == 'B') {
+ 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';
++i;
++move_num;
}
for ( ; i < pretty_pv.length; ++i) {
- var move = "<a class=\"move\" href=\"javascript:show_line(" + (display_lines.length - 1) + ", " + i + ");\">" + pretty_pv[i] + "</a>";
+ var move = "<a class=\"move\" id=\"automove" + line_num + "-" + i + "\" href=\"javascript:show_line(" + line_num + ", " + i + ");\">" + pretty_pv[i] + "</a>";
if (toplay == 'W') {
- if (i > opt_limit) {
+ if (i > opt_limit && !opt_showlast) {
return pv + ' (…)';
}
if (pv != '') {
}
}
+var update_history = function() {
+ 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));
+ } else {
+ $("#history").html(
+ '(<a class="move" href="javascript:collapse_history(true)">collapse</a>) ' +
+ print_pv(0, display_lines[0].pretty_pv, 1, 'W'));
+ }
+}
+
+/**
+ * @param {!boolean} truncate_history
+ */
+var collapse_history = function(truncate_history) {
+ truncate_display_history = truncate_history;
+ update_history();
+}
+window['collapse_history'] = collapse_history;
+
var update_refutation_lines = function() {
if (fen === null) {
return;
}
- if (display_lines.length > 1) {
- display_lines = [ display_lines[0] ];
+ if (display_lines.length > 2) {
+ display_lines = [ display_lines[0], display_lines[1] ];
}
var tbl = $("#refutationlines");
var pv_td = document.createElement("td");
tr.appendChild(pv_td);
$(pv_td).addClass("pv");
- $(pv_td).html(print_pv(fen, line['pv_uci'], line['pv_pretty'], move_num, toplay, 10));
+ $(pv_td).html(add_pv(fen, line['pv_uci'], line['pv_pretty'], move_num, toplay, 10));
tbl.append(tr);
}
$("#numviewers").text(num_viewers + " current viewers");
}
+ // The engine id.
+ if (data['id'] && data['id']['name'] !== null) {
+ $("#engineid").text(data['id']['name']);
+ }
+
// The score.
if (data['score'] !== null) {
$("#score").text(data['score']);
}
+ if (data['short_score'] !== undefined) {
+ document.title = '(' + data['short_score'] + ') 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.
if (data['position']['last_move_uci']) {
highlight_from = data['position']['last_move_uci'].substr(0, 2);
- highlight_to = data['position']['last_move_uci'].substr(2, 4);
+ highlight_to = data['position']['last_move_uci'].substr(2, 2);
} else {
highlight_from = highlight_to = undefined;
}
update_highlight();
+ // Print the history.
+ if (data['position']['history']) {
+ add_pv('start', data['position']['history'], data['position']['pretty_history'], 1, 'W', 8, true);
+ } else {
+ display_lines.push(null);
+ }
+ update_history();
+
// Print the PV.
- $("#pv").html(print_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['pv_pretty'], data['position']['move_num'], data['position']['toplay']));
// Update the PV arrow.
clear_arrows();
for (var i = 0; i < data['pv_uci'].length; i += 2) {
var from = data['pv_uci'][i].substr(0, 2);
var to = data['pv_uci'][i].substr(2,4);
- if ((i >= 2 && from != data['pv_uci'][i - 2].substr(2, 4)) ||
+ if ((i >= 2 && from != data['pv_uci'][i - 2].substr(2, 2)) ||
interfering_arrow(from, to)) {
break;
}
var alt_moves = find_nonstupid_moves(data, 30);
for (var i = 1; i < alt_moves.length && i < 3; ++i) {
create_arrow(alt_moves[i].substr(0, 2),
- alt_moves[i].substr(2, 4), '#f66', 1, 10);
+ alt_moves[i].substr(2, 2), '#f66', 1, 10);
}
}
if (nonstupid_moves.length > 0 && response !== undefined) {
create_arrow(response.substr(0, 2),
- response.substr(2, 4), '#66f', 6, 20);
+ response.substr(2, 2), '#66f', 6, 20);
}
}
}
window['resort_refutation_lines'] = resort_refutation_lines;
+/**
+ * @param {boolean} truncate_history
+ */
+var set_truncate_history = function(truncate_history) {
+ truncate_display_history = truncate_history;
+ update_refutation_lines();
+}
+window['set_truncate_history'] = set_truncate_history;
+
/**
* @param {number} line_num
* @param {number} move_num
window['show_line'] = show_line;
var prev_move = function() {
- --current_display_move;
+ if (current_display_move > -1) {
+ --current_display_move;
+ }
update_displayed_line();
}
window['prev_move'] = prev_move;
var next_move = function() {
- ++current_display_move;
+ if (current_display_line && current_display_move < current_display_line.pretty_pv.length - 1) {
+ ++current_display_move;
+ }
update_displayed_line();
}
window['next_move'] = next_move;
var update_displayed_line = function() {
+ if (highlighted_move !== null) {
+ highlighted_move.removeClass('highlight');
+ }
if (current_display_line === null) {
$("#linenav").hide();
$("#linemsg").show();
$("#linenav").show();
$("#linemsg").hide();
- if (current_display_move == 0) {
+ if (current_display_move <= 0) {
$("#prevmove").html("Previous");
} else {
$("#prevmove").html("<a href=\"javascript:prev_move();\">Previous</a></span>");
hiddenboard.position(current_display_line.start_fen, false);
for (var i = 0; i <= current_display_move; ++i) {
+ var pos = hiddenboard.position();
var move = current_display_line.uci_pv[i];
- move = move.substr(0, 2) + "-" + move.substr(2, 4);
+ 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);
+ pos = hiddenboard.position();
+
+ // 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.
hiddenboard.move("a8-d8", false);
}
}
+
+ highlighted_move = $("#automove" + current_display_line.line_number + "-" + current_display_move);
+ highlighted_move.addClass('highlight');
+
board.position(hiddenboard.position());
}
var init = function() {
+ unique = get_unique();
+
// Create board.
board = new window.ChessBoard('board', 'start');
hiddenboard = new window.ChessBoard('hiddenboard', 'start');
update_highlight();
redraw_arrows();
});
+ $(window).keyup(function(event) {
+ if (event.which == 39) {
+ next_move();
+ } else if (event.which == 37) {
+ prev_move();
+ }
+ });
};
$(document).ready(init);
projects / remoteglot / blobdiff