X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=www%2Fjs%2Fremoteglot.js;h=cd2ffa5ccb04c548aa706cf05be73f6ad2c7c4d9;hp=0b7a6028e66418a1377aa5f235c9e80ce24a3747;hb=1856a6b8a4c1facbb3ff1df0f240acc9d378b315;hpb=0451d189f5c931e7c122faa1cf4e1c3174d994fe diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js index 0b7a602..cd2ffa5 100644 --- a/www/js/remoteglot.js +++ b/www/js/remoteglot.js @@ -1,37 +1,160 @@ (function() { +/** @type {window.ChessBoard} @private */ var board = null; -var hiddenboard = null; + +/** + * The most recent analysis data we have from the server + * (about the most recent position). + * + * @type {?Object} + * @private */ +var current_analysis_data = null; + +/** + * If we are displaying previous analysis, this is non-null, + * and will override most of current_analysis_data. + * + * @type {?Object} + * @private + */ +var displayed_analysis_data = null; + +/** @type {Array.<{ + * from_col: number, + * from_row: number, + * to_col: number, + * to_row: number, + * line_width: number, + * arrow_size: number, + * fg_color: string + * }>} + * @private + */ var arrows = []; + +/** @type {Array.>} */ var occupied_by_arrows = []; + var refutation_lines = []; + +/** @type {!number} @private */ var move_num = 1; + +/** @type {!string} @private */ var toplay = 'W'; + +/** @type {number} @private */ var ims = 0; -var sort_refutation_lines_by_score = 0; + +/** @type {boolean} @private */ +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; -var unique = Math.random(); +/** @type {?jQuery} @private */ +var highlighted_move = null; + +/** @type {?number} @private */ +var unique = null; + +/** @type {boolean} @private */ +var enable_sound = false; + +/** The current position on the board, represented as a FEN string. + * @type {?string} + * @private + */ var fen = null; + +/** @typedef {{ + * start_fen: string, + * uci_pv: Array., + * pretty_pv: Array., + * line_num: number + * }} DisplayLine + */ + +/** @type {Array.} + * @private + */ var display_lines = []; + +/** @type {?DisplayLine} @private */ var current_display_line = null; + +/** @type {boolean} @private */ +var current_display_line_is_history = false; + +/** @type {?number} @private */ var current_display_move = null; -var request_update = function(board) { +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'); - update_board(board, data, num_viewers); + possibly_play_sound(current_analysis_data, data); + current_analysis_data = data; + update_board(current_analysis_data, displayed_analysis_data); + update_num_viewers(num_viewers); + + // Next update. + setTimeout(function() { request_update(); }, 100); }).fail(function() { // Wait ten seconds, then try again. - setTimeout(function() { request_update(board); }, 10000); + setTimeout(function() { request_update(); }, 10000); }); } +var possibly_play_sound = function(old_data, new_data) { + if (!enable_sound) { + return; + } + if (old_data === null) { + return; + } + var ding = document.getElementById('ding'); + if (ding && ding.play !== undefined) { + if (old_data['position'] && old_data['position']['fen'] && + new_data['position'] && new_data['position']['fen'] && + (old_data['position']['fen'] !== new_data['position']['fen'] || + old_data['position']['move_num'] !== new_data['position']['move_num'])) { + ding.play(); + } + } +} + var clear_arrows = function() { for (var i = 0; i < arrows.length; ++i) { if (arrows[i].svg) { @@ -53,6 +176,9 @@ var redraw_arrows = function() { } } +/** @param {!number} x + * @return {!number} + */ var sign = function(x) { if (x > 0) { return 1; @@ -63,7 +189,11 @@ var sign = function(x) { } } -// See if drawing this arrow on the board would cause unduly amount of confusion. +/** See if drawing this arrow on the board would cause unduly amount of confusion. + * @param {!string} from The square the arrow is from (e.g. e4). + * @param {!string} to The square the arrow is to (e.g. e4). + * @return {boolean} + */ var interfering_arrow = function(from, to) { var from_col = from.charCodeAt(0) - "a1".charCodeAt(0); var from_row = from.charCodeAt(1) - "a1".charCodeAt(1); @@ -95,6 +225,16 @@ var interfering_arrow = function(from, to) { return false; } +/** Find a point along the coordinate system given by the given line, + * units forward from the start of the line, units to the right of it. + * @param {!number} x1 + * @param {!number} x2 + * @param {!number} y1 + * @param {!number} y2 + * @param {!number} t + * @param {!number} u + * @return {!string} The point in "x y" form, suitable for SVG paths. + */ var point_from_start = function(x1, y1, x2, y2, t, u) { var dx = x2 - x1; var dy = y2 - y1; @@ -108,6 +248,16 @@ var point_from_start = function(x1, y1, x2, y2, t, u) { return x + " " + y; } +/** Find a point along the coordinate system given by the given line, + * units forward from the end of the line, units to the right of it. + * @param {!number} x1 + * @param {!number} x2 + * @param {!number} y1 + * @param {!number} y2 + * @param {!number} t + * @param {!number} u + * @return {!string} The point in "x y" form, suitable for SVG paths. + */ var point_from_end = function(x1, y1, x2, y2, t, u) { var dx = x2 - x1; var dy = y2 - y1; @@ -126,7 +276,7 @@ var position_arrow = function(arrow) { arrow.svg.parentElement.removeChild(arrow.svg); delete arrow.svg; } - if (current_display_line !== null) { + if (current_display_line !== null && !current_display_line_is_history) { return; } @@ -145,8 +295,8 @@ var position_arrow = function(arrow) { var SVG_NS = "http://www.w3.org/2000/svg"; var XHTML_NS = "http://www.w3.org/1999/xhtml"; var svg = document.createElementNS(SVG_NS, "svg"); - svg.setAttribute("width", $("#board").width()); - svg.setAttribute("height", $("#board").height()); + svg.setAttribute("width", /** @type{number} */ ($("#board").width())); + svg.setAttribute("height", /** @type{number} */ ($("#board").height())); svg.setAttribute("style", "position: absolute"); svg.setAttribute("position", "absolute"); svg.setAttribute("version", "1.1"); @@ -186,7 +336,7 @@ var position_arrow = function(arrow) { head.setAttribute("xmlns", XHTML_NS); head.setAttribute("stroke", "#000"); head.setAttribute("stroke-width", "1"); - head.setAttribute("fill", "#f66"); + head.setAttribute("fill", arrow.fg_color); svg.appendChild(head); $(svg).css({ top: pos.top, left: pos.left }); @@ -194,6 +344,13 @@ var position_arrow = function(arrow) { arrow.svg = svg; } +/** + * @param {!string} from_square + * @param {!string} to_square + * @param {!string} fg_color + * @param {number} line_width + * @param {number} arrow_size + */ var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_size) { var from_col = from_square.charCodeAt(0) - "a1".charCodeAt(0); var from_row = from_square.charCodeAt(1) - "a1".charCodeAt(1); @@ -229,8 +386,16 @@ var compare_by_score = function(refutation_lines, a, b) { return sa - sb; } -// Fake multi-PV using the refutation lines. Find all “relevant” moves, -// sorted by quality, descending. +/** + * Fake multi-PV using the refutation lines. Find all “relevant” moves, + * sorted by quality, descending. + * + * @param {!Object} data + * @param {number} margin The maximum number of centipawns worse than the + * best move can be and still be included. + * @return {Array.} The UCI representation (e.g. e1g1) of all + * moves, in score order. + */ var find_nonstupid_moves = function(data, margin) { // First of all, if there are any moves that are more than 0.5 ahead of // the primary move, the refutation lines are probably bunk, so just @@ -269,31 +434,65 @@ var find_nonstupid_moves = function(data, margin) { return moves; } +/** + * @param {number} x + * @return {!string} + */ var thousands = function(x) { return String(x).split('').reverse().join('').replace(/(\d{3}\B)/g, '$1,').split('').reverse().join(''); } -var print_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, opt_limit) { +/** + * @param {!string} fen + * @param {Array.} pretty_pv + * @param {number} move_num + * @param {!string} toplay + * @param {number=} opt_limit + * @param {boolean=} opt_showlast + */ +var add_pv = function(fen, 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.} 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 = "" + pretty_pv[0] + ""; + 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 = '(…) '; + i = pretty_pv.length - opt_limit; + if (i % 2 == 1) { + ++i; + } + move_num += i / 2; + } else if (toplay == 'B' && pretty_pv.length > 0) { + var move = "" + pretty_pv[0] + ""; pv = move_num + '. … ' + move; toplay = 'W'; ++i; ++move_num; } for ( ; i < pretty_pv.length; ++i) { - var move = "" + pretty_pv[i] + ""; + var move = "" + pretty_pv[i] + ""; if (toplay == 'W') { - if (i > opt_limit) { + if (i > opt_limit && !opt_showlast) { return pv + ' (…)'; } if (pv != '') { @@ -310,17 +509,42 @@ var print_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, opt_limit) { return pv; } -var update_highlight = function() { +var update_highlight = function() { $("#board").find('.square-55d63').removeClass('nonuglyhighlight'); - if (current_display_line === null && highlight_from !== undefined && highlight_to !== undefined) { + if ((current_display_line === null || current_display_line_is_history) && + highlight_from !== undefined && highlight_to !== undefined) { $("#board").find('.square-' + highlight_from).addClass('nonuglyhighlight'); $("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight'); } } -var update_refutation_lines = function(board) { - if (display_lines.length > 1) { - display_lines = [ display_lines[0] ]; +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( + '(collapse) ' + + 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 > 2) { + display_lines = [ display_lines[0], display_lines[1] ]; } var tbl = $("#refutationlines"); @@ -340,7 +564,7 @@ var update_refutation_lines = function(board) { var move_td = document.createElement("td"); tr.appendChild(move_td); $(move_td).addClass("move"); - if (line['pv_uci'].length == 0) { + if (line['pv_pretty'].length == 0) { $(move_td).text(line['pretty_move']); } else { var move = "" + line['pretty_move'] + ""; @@ -360,44 +584,122 @@ var update_refutation_lines = function(board) { 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_pretty'], move_num, toplay, 10)); tbl.append(tr); } // Make one of the links clickable and the other nonclickable. if (sort_refutation_lines_by_score) { - $("#sortbyscore0").html("Move"); + $("#sortbyscore0").html("Move"); $("#sortbyscore1").html("Score"); } else { $("#sortbyscore0").html("Move"); - $("#sortbyscore1").html("Score"); + $("#sortbyscore1").html("Score"); } } -var update_board = function(board, data, num_viewers) { +/** + * @param {Object} data + * @param {?Object} display_data + */ +var update_board = function(current_data, display_data) { + var data = display_data || current_data; + display_lines = []; - // The headline. - var headline = 'Analysis'; - if (data['position']['last_move'] !== 'none') { - headline += ' after ' - if (data['position']['toplay'] == 'W') { - headline += (data['position']['move_num']-1) + '… '; - } else { - headline += data['position']['move_num'] + '. '; - } - headline += data['position']['last_move']; + // Print the history. This is pretty much the only thing that's + // unconditionally taken from current_data (we're not interested in + // historic history). + if (current_data['position']['pretty_history']) { + add_pv('start', current_data['position']['pretty_history'], 1, 'W', 8, true); + } else { + display_lines.push(null); + } + update_history(); + + // The headline. Names are always fetched from current_data; + // the rest can depend a bit. + var headline; + if (current_data && + current_data['position']['player_w'] && current_data['position']['player_b']) { + headline = current_data['position']['player_w'] + '–' + + current_data['position']['player_b'] + ', analysis'; + } else { + headline = 'Analysis'; } + var last_move; + if (display_data) { + // Displaying some non-current position, pick out the last move + // from the history. This will work even if the fetch failed. + last_move = format_move_with_number( + current_display_line.pretty_pv[current_display_move], + Math.floor((current_display_move + 1) / 2) + 1, + (current_display_move % 2 == 1)); + headline += ' after ' + last_move; + } else if (data['position']['last_move'] !== 'none') { + last_move = format_move_with_number( + data['position']['last_move'], + data['position']['move_num'], + data['position']['toplay'] == 'W'); + headline += ' after ' + last_move; + } else { + last_move = null; + } $("#headline").text(headline); - if (num_viewers === null) { - $("#numviewers").text(""); - } else if (num_viewers == 1) { - $("#numviewers").text("You are the only current viewer"); + // The contains a very brief headline. + 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 { - $("#numviewers").text(num_viewers + " current viewers"); + document.title = 'analysis.sesse.net'; + } + + // The last move (shown by highlighting the from and to squares). + if (data['position'] && data['position']['last_move_uci']) { + highlight_from = data['position']['last_move_uci'].substr(0, 2); + highlight_to = data['position']['last_move_uci'].substr(2, 2); + } else if (current_display_line_is_history && current_display_move >= 0) { + // We don't have historic analysis for this position, but we + // can reconstruct what the last move was by just replaying + // from the start. + var hiddenboard = new Chess(); + for (var i = 0; i <= current_display_move; ++i) { + hiddenboard.move(current_display_line.pretty_pv[i]); + } + var moves = hiddenboard.history({ verbose: true }); + var last_move = moves.pop(); + highlight_from = last_move.from; + highlight_to = last_move.to; + } else { + highlight_from = highlight_to = undefined; + } + update_highlight(); + + if (data['failed']) { + $("#score").text("No analysis for this move"); + $("#pv").empty(); + $("#searchstats").html(" "); + $("#refutationlines").empty(); + refutation_lines = []; + update_refutation_lines(); + clear_arrows(); + update_displayed_line(); + return; + } + + // The engine id. + if (data['id'] && data['id']['name'] !== null) { + $("#engineid").text(data['id']['name']); } // The score. @@ -406,36 +708,32 @@ var update_board = function(board, data, num_viewers) { } // 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)'; } if (data['tbhits'] && data['tbhits'] > 0) { if (data['tbhits'] == 1) { - stats += ', one Nalimov hit'; + stats += ', one Syzygy hit'; } else { - stats += ', ' + data['tbhits'] + ' Nalimov hits'; + stats += ', ' + thousands(data['tbhits']) + ' Syzygy hits'; } } $("#searchstats").text(stats); + } else { + $("#searchstats").text(""); } // Update the board itself. fen = data['position']['fen']; update_displayed_line(); - 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); - } else { - highlight_from = highlight_to = undefined; - } - update_highlight(); - // 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_pretty'], data['position']['move_num'], data['position']['toplay'])); // Update the PV arrow. clear_arrows(); @@ -444,7 +742,7 @@ var update_board = function(board, data, num_viewers) { 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; } @@ -454,7 +752,7 @@ var update_board = function(board, data, num_viewers) { 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); } } @@ -485,7 +783,7 @@ var update_board = function(board, data, num_viewers) { 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); } } @@ -494,26 +792,77 @@ var update_board = function(board, data, num_viewers) { move_num = data['position']['move_num']; toplay = data['position']['toplay']; refutation_lines = data['refutation_lines']; - update_refutation_lines(board); + update_refutation_lines(); +} - // Next update. - setTimeout(function() { request_update(board); }, 100); +/** + * @param {number} num_viewers + */ +var update_num_viewers = function(num_viewers) { + if (num_viewers === null) { + $("#numviewers").text(""); + } else if (num_viewers == 1) { + $("#numviewers").text("You are the only current viewer"); + } else { + $("#numviewers").text(num_viewers + " current viewers"); + } +} + +/** + * @param {string} move + * @param {Number} move_num + * @param {boolean} white_to_play + */ +var format_move_with_number = function(move, move_num, white_to_play) { + var ret; + if (white_to_play) { + ret = (move_num - 1) + '… '; + } else { + ret = move_num + '. '; + } + ret += move; + return ret; } +/** + * @param {boolean} sort_by_score + */ var resort_refutation_lines = function(sort_by_score) { sort_refutation_lines_by_score = sort_by_score; - update_refutation_lines(board); + update_refutation_lines(); } 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 + */ var show_line = function(line_num, move_num) { if (line_num == -1) { current_display_line = null; current_display_move = null; + if (displayed_analysis_data) { + // TODO: Support exiting to history position if we are in an + // analysis line of a history position. + displayed_analysis_data = null; + update_board(current_analysis_data, displayed_analysis_data); + } } else { current_display_line = display_lines[line_num]; current_display_move = move_num; } + current_display_line_is_history = (line_num == 0); + + update_historic_analysis(); update_displayed_line(); update_highlight(); redraw_arrows(); @@ -521,18 +870,55 @@ var show_line = function(line_num, move_num) { window['show_line'] = show_line; var prev_move = function() { - --current_display_move; + if (current_display_move > -1) { + --current_display_move; + } + update_historic_analysis(); 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_historic_analysis(); update_displayed_line(); } -window['next_move'] = prev_move; +window['next_move'] = next_move; + +var update_historic_analysis = function() { + if (!current_display_line_is_history) { + return; + } + if (current_display_move == current_display_line.pretty_pv.length - 1) { + displayed_analysis_data = null; + update_board(current_analysis_data, displayed_analysis_data); + } + + // Fetch old analysis for this line if it exists. + var hiddenboard = new Chess(); + for (var i = 0; i <= current_display_move; ++i) { + hiddenboard.move(current_display_line.pretty_pv[i]); + } + var filename = "/history/move" + (current_display_move + 1) + "-" + + hiddenboard.fen().replace(/ /g, '_').replace(/\//g, '-') + ".json"; + + $.ajax({ + url: filename + }).done(function(data, textstatus, xhr) { + displayed_analysis_data = data; + update_board(current_analysis_data, displayed_analysis_data); + }).fail(function() { + displayed_analysis_data = {'failed': true}; + update_board(current_analysis_data, displayed_analysis_data); + }); +} var update_displayed_line = function() { + if (highlighted_move !== null) { + highlighted_move.removeClass('highlight'); + } if (current_display_line === null) { $("#linenav").hide(); $("#linemsg").show(); @@ -543,37 +929,64 @@ var update_displayed_line = function() { $("#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>"); } - if (current_display_move == current_display_line.uci_pv.length - 1) { + if (current_display_move == current_display_line.pretty_pv.length - 1) { $("#nextmove").html("Next"); } else { $("#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 move = current_display_line.uci_pv[i]; - move = move.substr(0, 2) + "-" + move.substr(2, 4); - hiddenboard.move(move, false); + hiddenboard.move(current_display_line.pretty_pv[i]); + } + + highlighted_move = $("#automove" + current_display_line.line_number + "-" + current_display_move); + highlighted_move.addClass('highlight'); + + board.position(hiddenboard.fen()); +} + +/** + * @param {boolean} param_enable_sound + */ +var set_sound = function(param_enable_sound) { + enable_sound = param_enable_sound; + if (enable_sound) { + $("#soundon").html("<strong>On</strong>"); + $("#soundoff").html("<a href=\"javascript:set_sound(false)\">Off</a>"); + } else { + $("#soundon").html("<a href=\"javascript:set_sound(true)\">On</a>"); + $("#soundoff").html("<strong>Off</strong>"); } - board.position(hiddenboard.position()); } +window['set_sound'] = set_sound; var init = function() { + unique = get_unique(); + set_sound(false); + // Create board. board = new window.ChessBoard('board', 'start'); - hiddenboard = new window.ChessBoard('hiddenboard', 'start'); - request_update(board); + request_update(); $(window).resize(function() { board.resize(); update_highlight(); redraw_arrows(); }); + $(window).keyup(function(event) { + if (event.which == 39) { + next_move(); + } else if (event.which == 37) { + prev_move(); + } + }); }; $(document).ready(init);