X-Git-Url: https://git.sesse.net/?p=remoteglot;a=blobdiff_plain;f=www%2Fjs%2Fremoteglot.js;h=01fee378b933b417a8669a9bf8b5a74e8c4d0009;hp=e220f4a6d390b3d698890e2924480f5ee3c223e5;hb=ee7c89056c97c8b999034b5c7f2da0d7570b885f;hpb=a42a7b25408acf92a72a4c04f4b577e5c8b38195 diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js index e220f4a..01fee37 100644 --- a/www/js/remoteglot.js +++ b/www/js/remoteglot.js @@ -1,34 +1,200 @@ -var board = []; +(function() { + +/** @type {window.ChessBoard} @private */ +var board = 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 = []; -var arrow_targets = []; + +/** @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; + +/** @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 request_update = function(board, first) { +/** @type {?jQuery} @private */ +var highlighted_move = null; + +/** @type {?number} @private */ +var unique = null; + +/** @type {boolean} @private */ +var enable_sound = false; + +/** + * Our best estimate of how many milliseconds we need to add to + * new Date() to get the true UTC time. Calibrated against the + * server clock. + * + * @type {?number} + * @private + */ +var client_clock_offset_ms = null; + +var clock_timer = null; + +/** 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 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?first=" + first - url: "http://analysis.sesse.net:5000/analysis.pl?ims=" + ims + url: "/analysis.pl?ims=" + ims + "&unique=" + unique }).done(function(data, textstatus, xhr) { + sync_server_clock(xhr.getResponseHeader('Date')); ims = xhr.getResponseHeader('X-Remoteglot-Last-Modified'); - update_board(board, data); + var num_viewers = xhr.getResponseHeader('X-Remoteglot-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(); }, 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) { + 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(); + } + } +} + +/** + * @type {!string} server_date_string + */ +var sync_server_clock = function(server_date_string) { + var server_time_ms = new Date(server_date_string).getTime(); + var client_time_ms = new Date().getTime(); + var estimated_offset_ms = server_time_ms - client_time_ms; + + // In order not to let the noise move us too much back and forth + // (the server only has one-second resolution anyway), we only + // change an existing skew if we are at least five seconds off. + if (client_clock_offset_ms === null || + Math.abs(estimated_offset_ms - client_clock_offset_ms) > 5000) { + client_clock_offset_ms = estimated_offset_ms; + } +} + var clear_arrows = function() { for (var i = 0; i < arrows.length; ++i) { - jsPlumb.detach(arrows[i].connection1); - jsPlumb.detach(arrows[i].connection2); + if (arrows[i].svg) { + arrows[i].svg.parentElement.removeChild(arrows[i].svg); + delete arrows[i].svg; + } } arrows = []; - for (var i = 0; i < arrow_targets.length; ++i) { - document.body.removeChild(arrow_targets[i]); - } - arrow_targets = []; - - occupied_by_arrows = []; + occupied_by_arrows = []; for (var y = 0; y < 8; ++y) { occupied_by_arrows.push([false, false, false, false, false, false, false, false]); } @@ -40,6 +206,9 @@ var redraw_arrows = function() { } } +/** @param {!number} x + * @return {!number} + */ var sign = function(x) { if (x > 0) { return 1; @@ -50,7 +219,11 @@ 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); @@ -82,88 +255,132 @@ var interfering_arrow = function(from, to) { return false; } -var add_target = function() { - var elem = document.createElement("div"); - $(elem).addClass("window"); - elem.id = "target" + arrow_targets.length; - document.body.appendChild(elem); - arrow_targets.push(elem); - return elem.id; +/** 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; + + var norm = 1.0 / Math.sqrt(dx * dx + dy * dy); + dx *= norm; + dy *= norm; + + var x = x1 + dx * t + dy * u; + var y = y1 + dy * t - dx * 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; + + var norm = 1.0 / Math.sqrt(dx * dx + dy * dy); + dx *= norm; + dy *= norm; + + var x = x2 + dx * t + dy * u; + var y = y2 + dy * t - dx * u; + return x + " " + y; +} + var position_arrow = function(arrow) { + if (arrow.svg) { + arrow.svg.parentElement.removeChild(arrow.svg); + delete arrow.svg; + } + if (current_display_line !== null && !current_display_line_is_history) { + return; + } + + var pos = $(".square-a8").position(); + var zoom_factor = $("#board").width() / 400.0; var line_width = arrow.line_width * zoom_factor; var arrow_size = arrow.arrow_size * zoom_factor; - var square_width = Math.floor(($("#board").width() - 1) / 8); - var from_y = (7 - arrow.from_row + 0.5)*square_width + 1; - var to_y = (7 - arrow.to_row + 0.5)*square_width + 1; - var from_x = (arrow.from_col + 0.5)*square_width + 1; - var to_x = (arrow.to_col + 0.5)*square_width + 1; - - var dx = to_x - from_x; - var dy = to_y - from_y; - var len = Math.sqrt(dx * dx + dy * dy); - dx /= len; - dy /= len; - var pos = $("#board").position(); - $("#" + arrow.s1).css({ top: pos.top + from_y + (0.5 * arrow_size) * dy, left: pos.left + from_x + (0.5 * arrow_size) * dx }); - $("#" + arrow.d1).css({ top: pos.top + to_y - (0.5 * arrow_size) * dy, left: pos.left + to_x - (0.5 * arrow_size) * dx }); - $("#" + arrow.s1v).css({ top: pos.top + from_y - 0 * dy, left: pos.left + from_x - 0 * dx }); - $("#" + arrow.d1v).css({ top: pos.top + to_y + 0 * dy, left: pos.left + to_x + 0 * dx }); - - if (arrow.connection1) { - jsPlumb.detach(arrow.connection1); - } - if (arrow.connection2) { - jsPlumb.detach(arrow.connection2); - } - arrow.connection1 = jsPlumb.connect({ - source: arrow.s1, - target: arrow.d1, - connector:["Straight"], - cssClass:"c1", - endpoint:"Blank", - endpointClass:"c1Endpoint", - anchor:"Continuous", - paintStyle:{ - lineWidth:line_width, - strokeStyle:arrow.fg_color, - outlineWidth:1, - outlineColor:"#666", - opacity:"60%" - } - }); - arrow.connection2 = jsPlumb.connect({ - source: arrow.s1v, - target: arrow.d1v, - connector:["Straight"], - cssClass:"vir", - endpoint:"Blank", - endpointClass:"c1Endpoint", - anchor:"Continuous", - paintStyle:{ - lineWidth:0, - strokeStyle:arrow.fg_color, - outlineWidth:0, - outlineColor:"#666", - }, - overlays : [ - ["Arrow", { - cssClass:"l1arrow", - location:1.0, - width: arrow_size, - length: arrow_size, - paintStyle: { - lineWidth:line_width, - strokeStyle:"#000", - }, - }] - ] - }); + var square_width = $(".square-a8").width(); + var from_y = (7 - arrow.from_row + 0.5)*square_width; + var to_y = (7 - arrow.to_row + 0.5)*square_width; + var from_x = (arrow.from_col + 0.5)*square_width; + var to_x = (arrow.to_col + 0.5)*square_width; + + var SVG_NS = "http://www.w3.org/2000/svg"; + var XHTML_NS = "http://www.w3.org/1999/xhtml"; + var svg = document.createElementNS(SVG_NS, "svg"); + svg.setAttribute("width", /** @type{number} */ ($("#board").width())); + svg.setAttribute("height", /** @type{number} */ ($("#board").height())); + svg.setAttribute("style", "position: absolute"); + svg.setAttribute("position", "absolute"); + svg.setAttribute("version", "1.1"); + svg.setAttribute("class", "c1"); + svg.setAttribute("xmlns", XHTML_NS); + + var x1 = from_x; + var y1 = from_y; + var x2 = to_x; + var y2 = to_y; + + // Draw the line. + var outline = document.createElementNS(SVG_NS, "path"); + outline.setAttribute("d", "M " + point_from_start(x1, y1, x2, y2, arrow_size / 2, 0) + " L " + point_from_end(x1, y1, x2, y2, -arrow_size / 2, 0)); + outline.setAttribute("xmlns", XHTML_NS); + outline.setAttribute("stroke", "#666"); + outline.setAttribute("stroke-width", line_width + 2); + outline.setAttribute("fill", "none"); + svg.appendChild(outline); + + var path = document.createElementNS(SVG_NS, "path"); + path.setAttribute("d", "M " + point_from_start(x1, y1, x2, y2, arrow_size / 2, 0) + " L " + point_from_end(x1, y1, x2, y2, -arrow_size / 2, 0)); + path.setAttribute("xmlns", XHTML_NS); + path.setAttribute("stroke", arrow.fg_color); + path.setAttribute("stroke-width", line_width); + path.setAttribute("fill", "none"); + svg.appendChild(path); + + // Then the arrow head. + var head = document.createElementNS(SVG_NS, "path"); + head.setAttribute("d", + "M " + point_from_end(x1, y1, x2, y2, 0, 0) + + " L " + point_from_end(x1, y1, x2, y2, -arrow_size, -arrow_size / 2) + + " L " + point_from_end(x1, y1, x2, y2, -arrow_size * .623, 0.0) + + " L " + point_from_end(x1, y1, x2, y2, -arrow_size, arrow_size / 2) + + " L " + point_from_end(x1, y1, x2, y2, 0, 0)); + head.setAttribute("xmlns", XHTML_NS); + head.setAttribute("stroke", "#000"); + head.setAttribute("stroke-width", "1"); + head.setAttribute("fill", arrow.fg_color); + svg.appendChild(head); + + $(svg).css({ top: pos.top, left: pos.left }); + document.body.appendChild(svg); + 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); @@ -172,16 +389,12 @@ var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_ // Create arrow. var arrow = { - s1: add_target(), - d1: add_target(), - s1v: add_target(), - d1v: add_target(), from_col: from_col, from_row: from_row, to_col: to_col, to_row: to_row, line_width: line_width, - arrow_size: arrow_size, + arrow_size: arrow_size, fg_color: fg_color }; @@ -189,23 +402,45 @@ var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_ arrows.push(arrow); } -// Fake multi-PV using the refutation lines. Find all “relevant” moves, -// sorted by quality, descending. +var compare_by_sort_key = function(refutation_lines, a, b) { + var ska = refutation_lines[a]['sort_key']; + var skb = refutation_lines[b]['sort_key']; + if (ska < skb) return -1; + if (ska > skb) return 1; + return 0; +}; + +var compare_by_score = function(refutation_lines, a, b) { + var sa = parseInt(refutation_lines[b]['score_sort_key'], 10); + var sb = parseInt(refutation_lines[a]['score_sort_key'], 10); + return sa - sb; +} + +/** + * 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 // kill them all. var best_score = undefined; var pv_score = undefined; - for (var move in data.refutation_lines) { - var score = data.refutation_lines[move].score_sort_key; - if (move == data.pv_uci[0]) { + for (var move in data['refutation_lines']) { + var score = parseInt(data['refutation_lines'][move]['score_sort_key'], 10); + if (move == data['pv_uci'][0]) { pv_score = score; } if (best_score === undefined || score > best_score) { best_score = score; } - if (!(data.refutation_lines[move].depth >= 8)) { + if (!(data['refutation_lines'][move]['depth'] >= 8)) { return []; } } @@ -217,125 +452,331 @@ var find_nonstupid_moves = function(data, margin) { // Now find all moves that are within “margin” of the best score. // The PV move will always be first. var moves = []; - for (var move in data.refutation_lines) { - var score = data.refutation_lines[move].score_sort_key; - if (move != data.pv_uci[0] && best_score - score <= margin) { + for (var move in data['refutation_lines']) { + var score = parseInt(data['refutation_lines'][move]['score_sort_key'], 10); + if (move != data['pv_uci'][0] && best_score - score <= margin) { moves.push(move); } } - moves = moves.sort(function(a, b) { return data.refutation_lines[b].score_sort_key - data.refutation_lines[a].score_sort_key; }); - moves.unshift(data.pv_uci[0]); + moves = moves.sort(function(a, b) { return compare_by_score(data['refutation_lines'], a, b) }); + moves.unshift(data['pv_uci'][0]); 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(pretty_pv, move_num, toplay, 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, + 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') { - pv = move_num + '. … ' + 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; + ++i; + ++move_num; } - ++move_num; for ( ; i < pretty_pv.length; ++i) { + var move = "" + pretty_pv[i] + ""; + if (toplay == 'W') { - if (i > limit) { + if (i > opt_limit && !opt_showlast) { return pv + ' (…)'; } if (pv != '') { pv += ' '; } - pv += move_num + '. ' + pretty_pv[i]; + pv += move_num + '. ' + move; ++move_num; toplay = 'B'; } else { - pv += ' ' + pretty_pv[i]; + pv += ' ' + move; toplay = 'W'; } } return pv; } -var compare_by_sort_key = function(data, a, b) { - var ska = data.refutation_lines[a].sort_key; - var skb = data.refutation_lines[b].sort_key; - if (ska < skb) return -1; - if (ska > skb) return 1; - return 0; -}; - -var update_highlight = function() { +var update_highlight = function() { $("#board").find('.square-55d63').removeClass('nonuglyhighlight'); - if (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_board = function(board, data) { - // The headline. - var headline = 'Analysis'; - if (data.position.last_move !== 'none') { - headline += ' after ' + data.position.move_num + '. '; - if (data.position.toplay == 'W') { - headline += '… '; +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"); + tbl.empty(); + + var moves = []; + for (var move in refutation_lines) { + moves.push(move); + } + var compare = sort_refutation_lines_by_score ? compare_by_score : compare_by_sort_key; + moves = moves.sort(function(a, b) { return compare(refutation_lines, a, b) }); + for (var i = 0; i < moves.length; ++i) { + var line = refutation_lines[moves[i]]; + + var tr = document.createElement("tr"); + + var move_td = document.createElement("td"); + tr.appendChild(move_td); + $(move_td).addClass("move"); + if (line['pv_pretty'].length == 0) { + $(move_td).text(line['pretty_move']); + } else { + var move = "" + line['pretty_move'] + ""; + $(move_td).html(move); } - headline += data.position.last_move; + + var score_td = document.createElement("td"); + tr.appendChild(score_td); + $(score_td).addClass("score"); + $(score_td).text(line['pretty_score']); + + var depth_td = document.createElement("td"); + tr.appendChild(depth_td); + $(depth_td).addClass("depth"); + $(depth_td).text("d" + line['depth']); + + var pv_td = document.createElement("td"); + tr.appendChild(pv_td); + $(pv_td).addClass("pv"); + $(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"); + $("#sortbyscore1").html("Score"); + } else { + $("#sortbyscore0").html("Move"); + $("#sortbyscore1").html("Score"); + } +} + +/** + * @param {Object} data + * @param {?Object} display_data + */ +var update_board = function(current_data, display_data) { + var data = display_data || current_data; + + display_lines = []; + + // 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); + // The contains a very brief headline. + var title_elems = []; + if (data['short_score'] !== undefined && data['short_score'] !== null) { + title_elems.push(data['short_score'].replace(/^ /, "")); + } + 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 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(); + $("#whiteclock").empty(); + $("#blackclock").empty(); + refutation_lines = []; + update_refutation_lines(); + clear_arrows(); + update_displayed_line(); + return; + } + + update_clock(); + + // 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['score'] !== null) { + $("#score").text(data['score']); } // The search stats. - 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['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'; + if (data['tbhits'] && data['tbhits'] > 0) { + if (data['tbhits'] == 1) { + 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. - board.position(data.position.fen); - - 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(); + fen = data['position']['fen']; + update_displayed_line(); // Print the PV. - var pv = print_pv(data.pv_pretty, data.position.move_num, data.position.toplay); - $("#pv").text(pv); + $("#pv").html(add_pv(data['position']['fen'], data['pv_pretty'], data['position']['move_num'], data['position']['toplay'])); // Update the PV arrow. clear_arrows(); - if (data.pv_uci.length >= 1) { + if (data['pv_uci'].length >= 1) { // draw a continuation arrow as long as it's the same piece - 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)) || + 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, 2)) || interfering_arrow(from, to)) { break; } @@ -345,28 +786,28 @@ var update_board = function(board, data) { 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); } } // See if all semi-reasonable moves have only one possible response. - if (data.pv_uci.length >= 2) { + if (data['pv_uci'].length >= 2) { var nonstupid_moves = find_nonstupid_moves(data, 300); - var response = data.pv_uci[1]; + var response = data['pv_uci'][1]; for (var i = 0; i < nonstupid_moves.length; ++i) { - if (nonstupid_moves[i] == data.pv_uci[0]) { + if (nonstupid_moves[i] == data['pv_uci'][0]) { // ignore the PV move for refutation lines. continue; } - if (!data.refutation_lines || - !data.refutation_lines[nonstupid_moves[i]] || - !data.refutation_lines[nonstupid_moves[i]].pv_uci || - data.refutation_lines[nonstupid_moves[i]].pv_uci.length < 1) { + if (!data['refutation_lines'] || + !data['refutation_lines'][nonstupid_moves[i]] || + !data['refutation_lines'][nonstupid_moves[i]]['pv_uci'] || + data['refutation_lines'][nonstupid_moves[i]]['pv_uci'].length < 1) { // Incomplete PV, abort. response = undefined; break; } - var this_response = data.refutation_lines[nonstupid_moves[i]].pv_uci[1]; + var this_response = data['refutation_lines'][nonstupid_moves[i]]['pv_uci'][1]; if (response !== this_response) { // Different response depending on lines, abort. response = undefined; @@ -376,60 +817,323 @@ var update_board = function(board, data) { 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); } } - // Show the refutation lines. - var tbl = $("#refutationlines"); - tbl.empty(); + // Update the refutation lines. + fen = data['position']['fen']; + move_num = data['position']['move_num']; + toplay = data['position']['toplay']; + refutation_lines = data['refutation_lines']; + update_refutation_lines(); +} - moves = []; - for (var move in data.refutation_lines) { - moves.push(move); +/** + * @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"); } - moves = moves.sort(function(a, b) { return compare_by_sort_key(data, a, b) }); - for (var i = 0; i < moves.length; ++i) { - var line = data.refutation_lines[moves[i]]; +} - var tr = document.createElement("tr"); +var update_clock = function() { + clearTimeout(clock_timer); - var move_td = document.createElement("td"); - tr.appendChild(move_td); - $(move_td).addClass("move"); - $(move_td).text(line.pretty_move); + var data = displayed_analysis_data || current_analysis_data; + if (data['position']) { + var result = data['position']['result']; + if (result === '1-0') { + $("#whiteclock").text("1"); + $("#blackclock").text("0"); + return; + } + if (result === '1/2-1/2') { + $("#whiteclock").text("1/2"); + $("#blackclock").text("1/2"); + return; + } + if (result === '0-1') { + $("#whiteclock").text("0"); + $("#blackclock").text("1"); + return; + } + } - var score_td = document.createElement("td"); - tr.appendChild(score_td); - $(score_td).addClass("score"); - $(score_td).text(line.pretty_score); + var white_clock = ""; + var black_clock = ""; - var depth_td = document.createElement("td"); - tr.appendChild(depth_td); - $(depth_td).addClass("depth"); - $(depth_td).text("d" + line.depth); + // Static clocks. + if (data['position'] && + data['position']['white_clock'] && + data['position']['black_clock']) { + white_clock = data['position']['white_clock']; + black_clock = data['position']['black_clock']; + } - var pv_td = document.createElement("td"); - tr.appendChild(pv_td); - $(pv_td).addClass("pv"); - $(pv_td).text(print_pv(line.pv_pretty, data.position.move_num, data.position.toplay, 10)); + // Dynamic clock (only one, obviously). + var color; + if (data['position']['white_clock_target']) { + color = "white"; + } else if (data['position']['black_clock_target']) { + color = "black"; + } + if (color) { + var now = new Date().getTime() + client_clock_offset_ms; + var remaining_ms = data['position'][color + '_clock_target'] * 1000 - now; + if (color === "white") { + white_clock = format_clock(remaining_ms); + } else { + black_clock = format_clock(remaining_ms); + } - tbl.append(tr); + // See when the clock will change next, and update right after that. + var next_update_ms = remaining_ms % 1000 + 100; + clock_timer = setTimeout(update_clock, next_update_ms); + } + + $("#whiteclock").text(white_clock); + $("#blackclock").text(black_clock); +} + +/** + * @param {Number} remaining_ms + */ +var format_clock = function(remaining_ms) { + if (remaining_ms <= 0) { + return "00:00:00"; + } + + var remaining = Math.floor(remaining_ms / 1000); + var seconds = remaining % 60; + remaining = (remaining - seconds) / 60; + var minutes = remaining % 60; + remaining = (remaining - minutes) / 60; + var hours = remaining; + return format_2d(hours) + ":" + format_2d(minutes) + ":" + format_2d(seconds); +} + +/** + * @param {Number} x + */ +var format_2d = function(x) { + if (x >= 10) { + return x; + } else { + return "0" + x; + } +} + +/** + * @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; + if (supports_html5_storage()) { + localStorage['sort_refutation_lines_by_score'] = sort_by_score ? 1 : 0; + } + 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); - // Next update. - setTimeout(function() { request_update(board, 0); }, 100); + update_historic_analysis(); + update_displayed_line(); + update_highlight(); + redraw_arrows(); +} +window['show_line'] = show_line; + +var prev_move = function() { + if (current_display_move > -1) { + --current_display_move; + } + update_historic_analysis(); + update_displayed_line(); } +window['prev_move'] = prev_move; + +var next_move = function() { + 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'] = 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(); + board.position(fen); + return; + } + + $("#linenav").show(); + $("#linemsg").hide(); + + 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.pretty_pv.length - 1) { + $("#nextmove").html("Next"); + } else { + $("#nextmove").html("<a href=\"javascript:next_move();\">Next</a></span>"); + } + + var hiddenboard = new Chess(); + hiddenboard.load(current_display_line.start_fen); + for (var i = 0; i <= current_display_move; ++i) { + 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>"); + + // Seemingly at least Firefox prefers MP3 over Opus; tell it otherwise, + // and also preload the file since the user has selected audio. + var ding = document.getElementById('ding'); + if (ding && ding.canPlayType && ding.canPlayType('audio/ogg; codecs="opus"') === 'probably') { + ding.src = 'ding.opus'; + ding.load(); + } + } else { + $("#soundon").html("<a href=\"javascript:set_sound(true)\">On</a>"); + $("#soundoff").html("<strong>Off</strong>"); + } + if (supports_html5_storage()) { + localStorage['enable_sound'] = enable_sound ? 1 : 0; + } +} +window['set_sound'] = set_sound; var init = function() { + unique = get_unique(); + + // Load settings from HTML5 local storage if available. + if (supports_html5_storage() && localStorage['enable_sound']) { + set_sound(parseInt(localStorage['enable_sound'])); + } else { + set_sound(false); + } + if (supports_html5_storage() && localStorage['sort_refutation_lines_by_score']) { + sort_refutation_lines_by_score = parseInt(localStorage['sort_refutation_lines_by_score']); + } else { + sort_refutation_lines_by_score = true; + } + // Create board. - board = new ChessBoard('board', 'start'); + board = new window.ChessBoard('board', 'start'); - request_update(board, 1); + 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); + +})();