From 9dd737c8851cf2706b4823dc886e1311854ede64 Mon Sep 17 00:00:00 2001 From: "Steinar H. Gunderson" Date: Sat, 24 Dec 2022 00:27:50 +0100 Subject: [PATCH] Use proper variable scoping everywhere. --- www/js/remoteglot.js | 682 +++++++++++++++++++++---------------------- 1 file changed, 340 insertions(+), 342 deletions(-) diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js index 624156b..c96335f 100644 --- a/www/js/remoteglot.js +++ b/www/js/remoteglot.js @@ -1,4 +1,5 @@ (function() { +'use strict'; /** * Version of this script. If the server returns a version larger than @@ -7,7 +8,7 @@ * @type {Number} * @const * @private */ -var SCRIPT_VERSION = 2021021300; +let SCRIPT_VERSION = 2021021300; /** * The current backend URL. @@ -15,14 +16,14 @@ var SCRIPT_VERSION = 2021021300; * @type {!string} * @private */ -var backend_url = "/analysis.pl"; -var backend_hash_url = "/hash"; +let backend_url = "/analysis.pl"; +let backend_hash_url = "/hash"; /** @type {window.ChessBoard} @private */ -var board = null; +let board = null; /** @type {boolean} @private */ -var board_is_animating = false; +let board_is_animating = false; /** * The most recent analysis data we have from the server @@ -30,7 +31,7 @@ var board_is_animating = false; * * @type {?Object} * @private */ -var current_analysis_data = null; +let current_analysis_data = null; /** * If we are displaying previous analysis or from hash, this is non-null, @@ -39,7 +40,7 @@ var current_analysis_data = null; * @type {?Object} * @private */ -var displayed_analysis_data = null; +let displayed_analysis_data = null; /** * Games currently in progress, if any. @@ -54,7 +55,7 @@ var displayed_analysis_data = null; * }>} * @private */ -var current_games = null; +let current_games = null; /** @type {Array.<{ * from_col: number, @@ -67,68 +68,68 @@ var current_games = null; * }>} * @private */ -var arrows = []; +let arrows = []; /** @type {Array.>} */ -var occupied_by_arrows = []; +let occupied_by_arrows = []; /** Currently displayed refutation lines (on-screen). * Can either come from the current_analysis_data, displayed_analysis_data, * or hash_refutation_lines. */ -var refutation_lines = []; +let refutation_lines = []; /** Refutation lines from current hash probe. * * If non-null, will override refutation lines from the base position. * Note that these are relative to display_fen, not base_fen. */ -var hash_refutation_lines = null; +let hash_refutation_lines = null; /** @type {!number} @private */ -var move_num = 1; +let move_num = 1; /** @type {!string} @private */ -var toplay = 'W'; +let toplay = 'W'; /** @type {number} @private */ -var ims = 0; +let ims = 0; /** @type {boolean} @private */ -var truncate_display_history = true; +let truncate_display_history = true; /** @type {!string|undefined} @private */ -var highlight_from = undefined; +let highlight_from = undefined; /** @type {!string|undefined} @private */ -var highlight_to = undefined; +let highlight_to = undefined; /** The HTML object of the move currently being highlighted (in red). * @type {?Element} * @private */ -var highlighted_move = null; +let highlighted_move = null; /** Currently suggested/recommended move when dragging. * @type {?{from: !string, to: !string}} * @private */ -var recommended_move = null; +let recommended_move = null; /** If reverse-dragging (dragging from the destination square to the * source square), the destination square. * @type {?string} * @private */ -var reverse_dragging_from = null; +let reverse_dragging_from = null; /** @type {?number} @private */ -var unique = null; +let unique = null; /** @type {boolean} @private */ -var enable_sound = false; +let enable_sound = false; /** @type {!number} @private */ -var delay_ms = 0; +let delay_ms = 0; /** * Our best estimate of how many milliseconds we need to add to @@ -138,23 +139,23 @@ var delay_ms = 0; * @type {?number} * @private */ -var client_clock_offset_ms = null; +let client_clock_offset_ms = null; -var clock_timer = null; +let clock_timer = null; /** The current position being analyzed, represented as a FEN string. * Note that this is not necessarily the same as display_fen. * @type {?string} * @private */ -var base_fen = null; +let base_fen = null; /** The current position on the board, represented as a FEN string. * Note that board.fen() does not contain e.g. who is to play. * @type {?string} * @private */ -var display_fen = null; +let display_fen = null; /** @typedef {{ * start_fen: string, @@ -178,16 +179,16 @@ var display_fen = null; * @type {Array.} * @private */ -var display_lines = []; +let display_lines = []; /** @type {?DisplayLine} @private */ -var current_display_line = null; +let current_display_line = null; /** @type {boolean} @private */ -var current_display_line_is_history = false; +let current_display_line_is_history = false; /** @type {?number} @private */ -var current_display_move = null; +let current_display_move = null; /** * The current backend request to get main analysis (not history), if any, @@ -196,7 +197,7 @@ var current_display_move = null; * @type {?AbortController} * @private */ -var current_analysis_xhr = null; +let current_analysis_xhr = null; /** * The current timer to fire off a request to get main analysis (not history), @@ -205,7 +206,7 @@ var current_analysis_xhr = null; * @type {?Number} * @private */ -var current_analysis_request_timer = null; +let current_analysis_request_timer = null; /** * The current backend request to get historic data, if any. @@ -213,7 +214,7 @@ var current_analysis_request_timer = null; * @type {?AbortController} * @private */ -var current_historic_xhr = null; +let current_historic_xhr = null; /** * The current backend request to get hash probes, if any, so that we can abort it. @@ -221,7 +222,7 @@ var current_historic_xhr = null; * @type {?AbortController} * @private */ -var current_hash_xhr = null; +let current_hash_xhr = null; /** * The current timer to display hash probe information (it could be waiting on the @@ -230,9 +231,9 @@ var current_hash_xhr = null; * @type {?Number} * @private */ -var current_hash_display_timer = null; +let current_hash_display_timer = null; -var supports_html5_storage = function() { +let supports_html5_storage = function() { try { return 'localStorage' in window && window['localStorage'] !== null; } catch (e) { @@ -242,19 +243,19 @@ var supports_html5_storage = function() { // 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(); +let get_unique = function() { + let use_local_storage = supports_html5_storage(); if (use_local_storage && window['localStorage']['unique']) { return window['localStorage']['unique']; } - var unique = Math.random(); + let unique = Math.random(); if (use_local_storage) { window['localStorage']['unique'] = unique; } return unique; } -var request_update = function() { +let request_update = function() { current_analysis_request_timer = null; let handle_err = () => { @@ -280,7 +281,7 @@ var request_update = function() { // Next update. if (!backend_url.match(/history/)) { - var timeout = 100; + let timeout = 100; current_analysis_request_timer = setTimeout(function() { request_update(); }, timeout); } }) @@ -300,11 +301,11 @@ var request_update = function() { } -var process_update_response = function(data, headers) { +let process_update_response = function(data, headers) { sync_server_clock(headers.get('Date')); ims = headers.get('X-RGLM'); - var num_viewers = headers.get('X-RGNV'); - var new_data; + let num_viewers = headers.get('X-RGNV'); + let new_data; if (Array.isArray(data)) { new_data = JSON.parse(JSON.stringify(current_analysis_data)); JSON_delta.patch(new_data, data); @@ -312,17 +313,17 @@ var process_update_response = function(data, headers) { new_data = data; } - var minimum_version = headers.get('X-RGMV'); + let minimum_version = headers.get('X-RGMV'); if (minimum_version && minimum_version > SCRIPT_VERSION) { // Upgrade to latest version with a force-reload. location.reload(true); } // Verify that the PV makes sense. - var valid = true; + let valid = true; if (new_data['pv']) { - var hiddenboard = new Chess(new_data['position']['fen']); - for (var i = 0; i < new_data['pv'].length; ++i) { + let hiddenboard = new Chess(new_data['position']['fen']); + for (let i = 0; i < new_data['pv'].length; ++i) { if (hiddenboard.move(new_data['pv'][i]) === null) { valid = false; break; @@ -341,14 +342,14 @@ var process_update_response = function(data, headers) { } } -var possibly_play_sound = function(old_data, new_data) { +let possibly_play_sound = function(old_data, new_data) { if (!enable_sound) { return; } if (old_data === null) { return; } - var ding = document.getElementById('ding'); + let ding = document.getElementById('ding'); if (ding && ding.play) { if (old_data['position'] && old_data['position']['fen'] && new_data['position'] && new_data['position']['fen'] && @@ -362,10 +363,10 @@ var possibly_play_sound = function(old_data, new_data) { /** * @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; +let sync_server_clock = function(server_date_string) { + let server_time_ms = new Date(server_date_string).getTime(); + let client_time_ms = new Date().getTime(); + let 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 @@ -376,8 +377,8 @@ var sync_server_clock = function(server_date_string) { } } -var clear_arrows = function() { - for (var i = 0; i < arrows.length; ++i) { +let clear_arrows = function() { + for (let i = 0; i < arrows.length; ++i) { if (arrows[i].svg) { if (arrows[i].svg.parentElement) { arrows[i].svg.parentElement.removeChild(arrows[i].svg); @@ -388,13 +389,13 @@ var clear_arrows = function() { arrows = []; occupied_by_arrows = []; - for (var y = 0; y < 8; ++y) { + for (let y = 0; y < 8; ++y) { occupied_by_arrows.push([false, false, false, false, false, false, false, false]); } } -var redraw_arrows = function() { - for (var i = 0; i < arrows.length; ++i) { +let redraw_arrows = function() { + for (let i = 0; i < arrows.length; ++i) { position_arrow(arrows[i]); } } @@ -402,7 +403,7 @@ var redraw_arrows = function() { /** @param {!number} x * @return {!number} */ -var sign = function(x) { +let sign = function(x) { if (x > 0) { return 1; } else if (x < 0) { @@ -417,11 +418,11 @@ var sign = function(x) { * @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); - var to_col = to.charCodeAt(0) - "a1".charCodeAt(0); - var to_row = to.charCodeAt(1) - "a1".charCodeAt(1); +let interfering_arrow = function(from, to) { + let from_col = from.charCodeAt(0) - "a1".charCodeAt(0); + let from_row = from.charCodeAt(1) - "a1".charCodeAt(1); + let to_col = to.charCodeAt(0) - "a1".charCodeAt(0); + let to_row = to.charCodeAt(1) - "a1".charCodeAt(1); occupied_by_arrows[from_row][from_col] = true; @@ -432,10 +433,10 @@ var interfering_arrow = function(from, to) { } // Sliding piece: Check if anything except the from-square is seen before. - var dx = sign(to_col - from_col); - var dy = sign(to_row - from_row); - var x = from_col; - var y = from_row; + let dx = sign(to_col - from_col); + let dy = sign(to_row - from_row); + let x = from_col; + let y = from_row; do { x += dx; y += dy; @@ -458,16 +459,16 @@ var interfering_arrow = function(from, to) { * @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; +let point_from_start = function(x1, y1, x2, y2, t, u) { + let dx = x2 - x1; + let dy = y2 - y1; - var norm = 1.0 / Math.sqrt(dx * dx + dy * dy); + let 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; + let x = x1 + dx * t + dy * u; + let y = y1 + dy * t - dx * u; return x + " " + y; } @@ -481,20 +482,20 @@ var point_from_start = function(x1, y1, x2, y2, t, u) { * @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; +let point_from_end = function(x1, y1, x2, y2, t, u) { + let dx = x2 - x1; + let dy = y2 - y1; - var norm = 1.0 / Math.sqrt(dx * dx + dy * dy); + let 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; + let x = x2 + dx * t + dy * u; + let y = y2 + dy * t - dx * u; return x + " " + y; } -var position_arrow = function(arrow) { +let position_arrow = function(arrow) { if (arrow.svg) { if (arrow.svg.parentElement) { arrow.svg.parentElement.removeChild(arrow.svg); @@ -505,12 +506,12 @@ var position_arrow = function(arrow) { return; } - var zoom_factor = document.getElementById("board").getBoundingClientRect().width / 400.0; - var line_width = arrow.line_width * zoom_factor; - var arrow_size = arrow.arrow_size * zoom_factor; + let zoom_factor = document.getElementById("board").getBoundingClientRect().width / 400.0; + let line_width = arrow.line_width * zoom_factor; + let arrow_size = arrow.arrow_size * zoom_factor; - var square_width = document.querySelector(".square-a8").getBoundingClientRect().width; - var from_y, to_y, from_x, to_x; + let square_width = document.querySelector(".square-a8").getBoundingClientRect().width; + let from_y, to_y, from_x, to_x; if (board.orientation() === 'black') { from_y = (arrow.from_row + 0.5)*square_width; to_y = (arrow.to_row + 0.5)*square_width; @@ -523,9 +524,9 @@ var position_arrow = function(arrow) { 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"); + let SVG_NS = "http://www.w3.org/2000/svg"; + let XHTML_NS = "http://www.w3.org/1999/xhtml"; + let svg = document.createElementNS(SVG_NS, "svg"); svg.setAttribute("width", /** @type{number} */ (document.getElementById("board").getBoundingClientRect().width)); svg.setAttribute("height", /** @type{number} */ (document.getElementById("board").getBoundingClientRect().height)); svg.setAttribute("style", "position: absolute"); @@ -534,13 +535,13 @@ var position_arrow = function(arrow) { 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; + let x1 = from_x; + let y1 = from_y; + let x2 = to_x; + let y2 = to_y; // Draw the line. - var outline = document.createElementNS(SVG_NS, "path"); + let 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"); @@ -548,7 +549,7 @@ var position_arrow = function(arrow) { outline.setAttribute("fill", "none"); svg.appendChild(outline); - var path = document.createElementNS(SVG_NS, "path"); + let 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); @@ -557,7 +558,7 @@ var position_arrow = function(arrow) { svg.appendChild(path); // Then the arrow head. - var head = document.createElementNS(SVG_NS, "path"); + let 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) + @@ -584,14 +585,14 @@ var position_arrow = function(arrow) { * @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); - var to_col = to_square.charCodeAt(0) - "a1".charCodeAt(0); - var to_row = to_square.charCodeAt(1) - "a1".charCodeAt(1); +let create_arrow = function(from_square, to_square, fg_color, line_width, arrow_size) { + let from_col = from_square.charCodeAt(0) - "a1".charCodeAt(0); + let from_row = from_square.charCodeAt(1) - "a1".charCodeAt(1); + let to_col = to_square.charCodeAt(0) - "a1".charCodeAt(0); + let to_row = to_square.charCodeAt(1) - "a1".charCodeAt(1); // Create arrow. - var arrow = { + let arrow = { from_col: from_col, from_row: from_row, to_col: to_col, @@ -605,9 +606,9 @@ var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_ arrows.push(arrow); } -var compare_by_score = function(refutation_lines, invert, a, b) { - var sa = compute_score_sort_key(refutation_lines[b]['score'], refutation_lines[b]['depth'], invert); - var sb = compute_score_sort_key(refutation_lines[a]['score'], refutation_lines[a]['depth'], invert); +let compare_by_score = function(refutation_lines, invert, a, b) { + let sa = compute_score_sort_key(refutation_lines[b]['score'], refutation_lines[b]['depth'], invert); + let sb = compute_score_sort_key(refutation_lines[a]['score'], refutation_lines[a]['depth'], invert); return sa - sb; } @@ -622,15 +623,15 @@ var compare_by_score = function(refutation_lines, invert, a, b) { * @return {Array.} The FEN representation (e.g. Ne4) of all * moves, in score order. */ -var find_nonstupid_moves = function(data, margin, invert) { +let find_nonstupid_moves = function(data, margin, invert) { // 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 line = data['refutation_lines'][move]; - var score = compute_score_sort_key(line['score'], line['depth'], invert, false); + let best_score = undefined; + let pv_score = undefined; + for (let move in data['refutation_lines']) { + let line = data['refutation_lines'][move]; + let score = compute_score_sort_key(line['score'], line['depth'], invert, false); if (move == data['pv'][0]) { pv_score = score; } @@ -648,10 +649,10 @@ var find_nonstupid_moves = function(data, margin, invert) { // 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 line = data['refutation_lines'][move]; - var score = compute_score_sort_key(line['score'], line['depth'], invert); + let moves = []; + for (let move in data['refutation_lines']) { + let line = data['refutation_lines'][move]; + let score = compute_score_sort_key(line['score'], line['depth'], invert); if (move != data['pv'][0] && best_score - score <= margin) { moves.push(move); } @@ -666,7 +667,7 @@ var find_nonstupid_moves = function(data, margin, invert) { * @param {number} x * @return {!string} */ -var thousands = function(x) { +let thousands = function(x) { return String(x).split('').reverse().join('').replace(/(\d{3}\B)/g, '$1,').split('').reverse().join(''); } @@ -680,7 +681,7 @@ var thousands = function(x) { * @param {number=} opt_limit * @param {boolean=} opt_showlast */ -var add_pv = function(start_fen, pv, move_num, toplay, scores, start_display_move_num, opt_limit, opt_showlast) { +let add_pv = function(start_fen, pv, move_num, toplay, scores, start_display_move_num, opt_limit, opt_showlast) { display_lines.push({ start_fen: start_fen, pv: pv, @@ -689,7 +690,7 @@ var add_pv = function(start_fen, pv, move_num, toplay, scores, start_display_mov scores: scores, start_display_move_num: start_display_move_num }); - var splicepos = null; + let splicepos = null; if (scores !== null && scores.length >= 1 && scores[scores.length - 1].score !== undefined && scores[scores.length - 1].score !== null && @@ -706,17 +707,17 @@ var add_pv = function(start_fen, pv, move_num, toplay, scores, start_display_mov * @param {number=} opt_limit If set, show at most this number of moves. * @param {boolean=} opt_showlast If limit is set, show the last moves instead of the first ones. */ -var print_pv = function(line_num, splicepos, opt_limit, opt_showlast) { - var display_line = display_lines[line_num]; - var pv = display_line.pv; - var move_num = display_line.move_num; - var toplay = display_line.toplay; +let print_pv = function(line_num, splicepos, opt_limit, opt_showlast) { + let display_line = display_lines[line_num]; + let pv = display_line.pv; + let move_num = display_line.move_num; + let toplay = display_line.toplay; // Truncate PV at the start if needed. - var start_display_move_num = display_line.start_display_move_num; + let start_display_move_num = display_line.start_display_move_num; if (start_display_move_num > 0) { pv = pv.slice(start_display_move_num); - var to_add = start_display_move_num; + let to_add = start_display_move_num; if (toplay === 'B') { ++move_num; toplay = 'W'; @@ -732,9 +733,9 @@ var print_pv = function(line_num, splicepos, opt_limit, opt_showlast) { } } - var ret = ''; - var i = 0; - var in_tb = false; + let ret = ''; + let i = 0; + let in_tb = false; if (opt_limit && opt_showlast && 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 @@ -747,7 +748,7 @@ var print_pv = function(line_num, splicepos, opt_limit, opt_showlast) { } move_num += i / 2; } else if (toplay == 'B' && pv.length > 0) { - var move = ""; + let move = ""; if (splicepos === 0) { move += "(TB: "; in_tb = true; @@ -759,7 +760,7 @@ var print_pv = function(line_num, splicepos, opt_limit, opt_showlast) { ++move_num; } for ( ; i < pv.length; ++i) { - var move = "" + pv[i] + ""; + let move = "" + pv[i] + ""; if (splicepos === i) { ret += " (TB: "; in_tb = true; @@ -790,9 +791,9 @@ var print_pv = function(line_num, splicepos, opt_limit, opt_showlast) { } /** Update the highlighted to/from squares on the board. - * Based on the global "highlight_from" and "highlight_to" variables. + * Based on the global "highlight_from" and "highlight_to" letiables. */ -var update_board_highlight = function() { +let update_board_highlight = function() { document.getElementById("board").querySelectorAll('.square-55d63').forEach((square) => square.classList.remove('nonuglyhighlight')); if ((current_display_line === null || current_display_line_is_history) && highlight_from !== undefined && highlight_to !== undefined) { @@ -801,7 +802,7 @@ var update_board_highlight = function() { } } -var update_history = function() { +let update_history = function() { if (display_lines[0] === null || display_lines[0].pv.length == 0) { document.getElementById("history").innerHTML = "No history"; } else if (truncate_display_history) { @@ -816,7 +817,7 @@ var update_history = function() { /** * @param {!boolean} truncate_history */ -var collapse_history = function(truncate_history) { +let collapse_history = function(truncate_history) { truncate_display_history = truncate_history; update_history(); } @@ -826,7 +827,7 @@ window['collapse_history'] = collapse_history; * * Also recreates the global "display_lines". */ -var update_refutation_lines = function() { +let update_refutation_lines = function() { if (base_fen === null) { return; } @@ -834,7 +835,7 @@ var update_refutation_lines = function() { // Truncate so that only the history and PV is left. display_lines = [ display_lines[0], display_lines[1] ]; } - var tbl = document.getElementById("refutationlines"); + let tbl = document.getElementById("refutationlines"); tbl.replaceChildren(); if (display_lines.length < 2) { @@ -842,52 +843,52 @@ var update_refutation_lines = function() { } // Find out where the lines start from. - var base_line = []; - var base_scores = display_lines[1].scores; - var start_display_move_num = 0; + let base_line = []; + let base_scores = display_lines[1].scores; + let start_display_move_num = 0; if (hash_refutation_lines) { base_line = current_display_line.pv.slice(0, current_display_move + 1); base_scores = current_display_line.scores; start_display_move_num = base_line.length; } - var moves = []; - for (var move in refutation_lines) { + let moves = []; + for (let move in refutation_lines) { moves.push(move); } - var invert = (toplay === 'B'); + let invert = (toplay === 'B'); if (current_display_line && current_display_move % 2 == 0 && !current_display_line_is_history) { invert = !invert; } moves = moves.sort(function(a, b) { return compare_by_score(refutation_lines, invert, a, b) }); - for (var i = 0; i < moves.length; ++i) { - var line = refutation_lines[moves[i]]; + for (let i = 0; i < moves.length; ++i) { + let line = refutation_lines[moves[i]]; - var tr = document.createElement("tr"); + let tr = document.createElement("tr"); - var move_td = document.createElement("td"); + let move_td = document.createElement("td"); tr.appendChild(move_td); move_td.classList.add("move"); - var scores = base_scores.concat([{ first_move: start_display_move_num, score: line['score'] }]); + let scores = base_scores.concat([{ first_move: start_display_move_num, score: line['score'] }]); if (line['pv'].length == 0) { // Not found, so just make a one-move PV. - var move = "" + line['move'] + ""; + let move = "" + line['move'] + ""; move_td.innerHTML = move; - var score_td = document.createElement("td"); + let score_td = document.createElement("td"); score_td.classList.add("score"); score_td.textContent = "—"; tr.appendChild(score_td); - var depth_td = document.createElement("td"); + let depth_td = document.createElement("td"); tr.appendChild(depth_td); depth_td.classList.add("depth"); depth_td.textContent = "—"; - var pv_td = document.createElement("td"); + let pv_td = document.createElement("td"); tr.appendChild(pv_td); pv_td.classList.add("pv"); pv_td.innerHTML = add_pv(base_fen, base_line.concat([ line['move'] ]), move_num, toplay, scores, start_display_move_num); @@ -896,15 +897,15 @@ var update_refutation_lines = function() { continue; } - var move = "" + line['move'] + ""; + let move = "" + line['move'] + ""; move_td.innerHTML = move; - var score_td = document.createElement("td"); + let score_td = document.createElement("td"); tr.appendChild(score_td); score_td.classList.add("score"); score_td.textContent = format_short_score(line['score']); - var depth_td = document.createElement("td"); + let depth_td = document.createElement("td"); tr.appendChild(depth_td); depth_td.classList.add("depth"); if (line['depth'] && line['depth'] >= 0) { @@ -913,7 +914,7 @@ var update_refutation_lines = function() { depth_td.textContent = "—"; } - var pv_td = document.createElement("td"); + let pv_td = document.createElement("td"); tr.appendChild(pv_td); pv_td.classList.add("pv"); pv_td.innerHTML = add_pv(base_fen, base_line.concat(line['pv']), move_num, toplay, scores, start_display_move_num, 10); @@ -933,12 +934,12 @@ var update_refutation_lines = function() { * @param {Array.} moves * @param {number} last_move */ -var chess_from = function(fen, moves, last_move) { - var hiddenboard = new Chess(); +let chess_from = function(fen, moves, last_move) { + let hiddenboard = new Chess(); if (fen !== null && fen !== undefined) { hiddenboard.load(fen); } - for (var i = 0; i <= last_move; ++i) { + for (let i = 0; i <= last_move; ++i) { if (moves[i] === '0-0') { hiddenboard.move('O-O'); } else if (moves[i] === '0-0-0') { @@ -950,25 +951,25 @@ var chess_from = function(fen, moves, last_move) { return hiddenboard; } -var update_game_list = function(games) { +let update_game_list = function(games) { document.getElementById("games").textContent = ""; if (games === null) { return; } - var games_div = document.getElementById('games'); - for (var game_num = 0; game_num < games.length; ++game_num) { - var game = games[game_num]; - var game_span = document.createElement("span"); + let games_div = document.getElementById('games'); + for (let game_num = 0; game_num < games.length; ++game_num) { + let game = games[game_num]; + let game_span = document.createElement("span"); game_span.setAttribute("class", "game"); - var game_name = document.createTextNode(game['name']); + let game_name = document.createTextNode(game['name']); if (game['url'] === backend_url) { // This game. game_span.appendChild(game_name); if (current_analysis_data && current_analysis_data['position']) { - var score; + let score; if (current_analysis_data['position']['result']) { score = " (" + current_analysis_data['position']['result'] + ")"; } else { @@ -978,12 +979,12 @@ var update_game_list = function(games) { } } else { // Some other game. - var game_a = document.createElement("a"); + let game_a = document.createElement("a"); game_a.setAttribute("href", "#" + game['id']); game_a.appendChild(game_name); game_span.appendChild(game_a); - var score; + let score; if (game['result']) { score = " (" + game['result'] + ")"; } else { @@ -1000,11 +1001,11 @@ var update_game_list = function(games) { * Try to find a running game that matches with the current hash, * and switch to it if we're not already displaying it. */ -var possibly_switch_game_from_hash = function() { - var history_match = window.location.hash.match(/^#history=([a-zA-Z0-9_-]+)/); +let possibly_switch_game_from_hash = function() { + let history_match = window.location.hash.match(/^#history=([a-zA-Z0-9_-]+)/); if (history_match !== null) { - var game_id = history_match[1]; - var fake_game = { + let game_id = history_match[1]; + let fake_game = { url: '/history/' + game_id + '.json', hashurl: '', id: 'history=' + game_id @@ -1017,8 +1018,8 @@ var possibly_switch_game_from_hash = function() { return; } - var hash = window.location.hash.replace(/^#/,''); - for (var i = 0; i < current_games.length; ++i) { + let hash = window.location.hash.replace(/^#/,''); + for (let i = 0; i < current_games.length; ++i) { if (current_games[i]['id'] === hash) { if (backend_url !== current_games[i]['url']) { switch_backend(current_games[i]); @@ -1032,14 +1033,14 @@ var possibly_switch_game_from_hash = function() { * If this is a Chess960 castling which doesn't move the king, * move the rook instead. */ -var patch_move = function(move) { +let patch_move = function(move) { if (move === null) return null; if (move.from !== move.to) return move; - var f = move.rook_sq & 15; - var r = move.rook_sq >> 4; - var from = ('abcdefgh'.substring(f,f+1) + '87654321'.substring(r,r+1)); - var to = move.to; + let f = move.rook_sq & 15; + let r = move.rook_sq >> 4; + let from = ('abcdefgh'.substring(f,f+1) + '87654321'.substring(r,r+1)); + let to = move.to; if (move.to === 'g1') { to = 'f1'; @@ -1056,11 +1057,11 @@ var patch_move = function(move) { /** Update all the HTML on the page, based on current global state. */ -var update_board = function() { +let update_board = function() { document.body.style.opacity = null; - var data = displayed_analysis_data || current_analysis_data; - var current_data = current_analysis_data; // Convenience alias. + let data = displayed_analysis_data || current_analysis_data; + let current_data = current_analysis_data; // Convenience alias. display_lines = []; @@ -1068,7 +1069,7 @@ var update_board = function() { // unconditionally taken from current_data (we're not interested in // historic history). if (current_data['position']['history']) { - var start = (current_data['position'] && current_data['position']['start_fen']) ? current_data['position']['start_fen'] : 'start'; + let start = (current_data['position'] && current_data['position']['start_fen']) ? current_data['position']['start_fen'] : 'start'; add_pv(start, current_data['position']['history'], 1, 'W', null, 0, 8, true); } else { display_lines.push(null); @@ -1086,7 +1087,7 @@ var update_board = function() { // The headline. Names are always fetched from current_data; // the rest can depend a bit. - var headline; + let headline; if (current_data && current_data['position']['player_w'] && current_data['position']['player_b']) { headline = current_data['position']['player_w'] + '–' + @@ -1126,11 +1127,11 @@ var update_board = function() { // Credits: Move source, possibly with URL. if (current_data['move_source'] && current_data['move_source_url']) { document.getElementById("movesource").textContent = "Moves provided by "; - var movesource_a = document.createElement("a"); + let movesource_a = document.createElement("a"); movesource_a.setAttribute("href", current_data['move_source_url']); - var movesource_text = document.createTextNode(current_data['move_source']); + let movesource_text = document.createTextNode(current_data['move_source']); movesource_a.appendChild(movesource_text); - var movesource_period = document.createTextNode("."); + let movesource_period = document.createTextNode("."); document.getElementById("movesource").appendChild(movesource_a); document.getElementById("movesource").appendChild(movesource_period); } else if (current_data['move_source']) { @@ -1139,7 +1140,7 @@ var update_board = function() { document.getElementById("movesource").textContent = ""; } - var last_move; + let last_move; if (displayed_analysis_data) { // Displaying some non-current position, pick out the last move // from the history. This will work even if the fetch failed. @@ -1151,7 +1152,7 @@ var update_board = function() { } } else if (data['position']['last_move'] !== 'none') { // Find the previous move. - var previous_move_num, previous_toplay; + let previous_move_num, previous_toplay; if (data['position']['toplay'] == 'B') { previous_move_num = data['position']['move_num']; previous_toplay = 'W'; @@ -1171,7 +1172,7 @@ var update_board = function() { document.getElementById("headline").textContent = headline; // The contains a very brief headline. - var title_elems = []; + let title_elems = []; if (data['position'] && data['position']['result']) { title_elems.push(data['position']['result']); } else if (data['score']) { @@ -1195,9 +1196,9 @@ var update_board = function() { // 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 position = (data['position'] && data['position']['start_fen']) ? data['position']['start_fen'] : null; - var hiddenboard = chess_from(position, current_display_line.pv, current_display_move); - var moves = hiddenboard.history({ verbose: true }); + let position = (data['position'] && data['position']['start_fen']) ? data['position']['start_fen'] : null; + let hiddenboard = chess_from(position, current_display_line.pv, current_display_move); + let moves = hiddenboard.history({ verbose: true }); last_move = moves.pop(); highlight_from = last_move.from; highlight_to = last_move.to; @@ -1226,9 +1227,9 @@ var update_board = function() { // The score. if (current_display_line && !current_display_line_is_history) { - var score; + let score; if (current_display_line.scores && current_display_line.scores.length > 0) { - for (var i = 0; i < current_display_line.scores.length; ++i) { + for (let i = 0; i < current_display_line.scores.length; ++i) { if (current_display_move < current_display_line.scores[i].first_move) { break; } @@ -1250,7 +1251,7 @@ var update_board = function() { } else if (data['tablebase'] == 1) { document.getElementById("searchstats").textContent = "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'; + let stats = thousands(data['nodes']) + ' nodes, ' + thousands(data['nps']) + ' nodes/sec, depth ' + data['depth'] + ' ply'; if (data['seldepth']) { stats += ' (' + data['seldepth'] + ' selective)'; } @@ -1274,18 +1275,18 @@ var update_board = function() { // Print the PV. document.getElementById("pvtitle").textContent = "PV:"; - var scores = [{ first_move: -1, score: data['score'] }]; + let scores = [{ first_move: -1, score: data['score'] }]; document.getElementById("pv").innerHTML = add_pv(data['position']['fen'], data['pv'], data['position']['move_num'], data['position']['toplay'], scores, 0); // Update the PV arrow. clear_arrows(); if (data['pv'].length >= 1) { - var hiddenboard = new Chess(base_fen); + let hiddenboard = new Chess(base_fen); // draw a continuation arrow as long as it's the same piece - var last_to; - for (var i = 0; i < data['pv'].length; i += 2) { - var move = patch_move(hiddenboard.move(data['pv'][i])); + let last_to; + for (let i = 0; i < data['pv'].length; i += 2) { + let move = patch_move(hiddenboard.move(data['pv'][i])); if ((i >= 2 && move.from != last_to) || interfering_arrow(move.from, move.to)) { @@ -1296,10 +1297,10 @@ var update_board = function() { hiddenboard.move(data['pv'][i + 1]); // To keep continuity. } - var alt_moves = find_nonstupid_moves(data, 30, data['position']['toplay'] === 'B'); - for (var i = 1; i < alt_moves.length && i < 3; ++i) { + let alt_moves = find_nonstupid_moves(data, 30, data['position']['toplay'] === 'B'); + for (let i = 1; i < alt_moves.length && i < 3; ++i) { hiddenboard = new Chess(base_fen); - var move = patch_move(hiddenboard.move(alt_moves[i])); + let move = patch_move(hiddenboard.move(alt_moves[i])); if (move !== null) { create_arrow(move.from, move.to, '#f66', 1, 10); } @@ -1308,14 +1309,11 @@ var update_board = function() { // See if all semi-reasonable moves have only one possible response. if (data['pv'].length >= 2) { - var nonstupid_moves = find_nonstupid_moves(data, 300, data['position']['toplay'] === 'B'); - var response; - { - var hiddenboard = new Chess(base_fen); - hiddenboard.move(data['pv'][0]); - response = hiddenboard.move(data['pv'][1]); - } - for (var i = 0; i < nonstupid_moves.length; ++i) { + let nonstupid_moves = find_nonstupid_moves(data, 300, data['position']['toplay'] === 'B'); + let hiddenboard = new Chess(base_fen); + hiddenboard.move(data['pv'][0]); + let response = hiddenboard.move(data['pv'][1]); + for (let i = 0; i < nonstupid_moves.length; ++i) { if (nonstupid_moves[i] == data['pv'][0]) { // ignore the PV move for refutation lines. continue; @@ -1328,10 +1326,10 @@ var update_board = function() { response = undefined; break; } - var line = data['refutation_lines'][nonstupid_moves[i]]; + let line = data['refutation_lines'][nonstupid_moves[i]]; hiddenboard = new Chess(base_fen); hiddenboard.move(line['pv'][0]); - var this_response = hiddenboard.move(line['pv'][1]); + let this_response = hiddenboard.move(line['pv'][1]); if (this_response === null) { console.log("BUG: ", i); console.log(data); @@ -1360,36 +1358,36 @@ var update_board = function() { update_sparkline(data); } -var update_sparkline = function(data) { +let update_sparkline = function(data) { let scorespark = document.getElementById('scoresparkcontainer'); scorespark.textContent = ''; if (data && data['score_history']) { - var first_move_num = undefined; - for (var halfmove_num in data['score_history']) { + let first_move_num = undefined; + for (let halfmove_num in data['score_history']) { halfmove_num = parseInt(halfmove_num); if (first_move_num === undefined || halfmove_num < first_move_num) { first_move_num = halfmove_num; } } if (first_move_num !== undefined) { - var last_move_num = data['position']['move_num'] * 2 - 3; + let last_move_num = data['position']['move_num'] * 2 - 3; if (data['position']['toplay'] === 'B') { ++last_move_num; } // Possibly truncate some moves if we don't have enough width. - var max_moves = Math.floor(scorespark.getBoundingClientRect().width / 5) - 3; + let max_moves = Math.floor(scorespark.getBoundingClientRect().width / 5) - 3; if (last_move_num - first_move_num > max_moves) { first_move_num = last_move_num - max_moves; } - var min_score = -1; - var max_score = 1; - var last_score = null; - var scores = []; - for (var halfmove_num = first_move_num; halfmove_num <= last_move_num; ++halfmove_num) { + let min_score = -1; + let max_score = 1; + let last_score = null; + let scores = []; + for (let halfmove_num = first_move_num; halfmove_num <= last_move_num; ++halfmove_num) { if (data['score_history'][halfmove_num]) { - var score = compute_plot_score(data['score_history'][halfmove_num]); + let score = compute_plot_score(data['score_history'][halfmove_num]); last_score = score; if (score < min_score) min_score = score; if (score > max_score) max_score = score; @@ -1450,7 +1448,7 @@ var update_sparkline = function(data) { } } -var draw_hover = function(e, color, tooltip) { +let draw_hover = function(e, color, tooltip) { e.target.style.fill = 'rgb(' + color[0]*100.0 + '%, ' + color[1]*100.0 + '%, ' + color[2]*100.0 + '%)'; let hover = document.getElementById('sparklinehover'); @@ -1465,7 +1463,7 @@ var draw_hover = function(e, color, tooltip) { hover.style.top = top + 'px'; } -var hide_hover = function(e, color) { +let hide_hover = function(e, color) { e.target.style.fill = 'rgb(' + color[0]*100.0 + '%, ' + color[1]*100.0 + '%, ' + color[2]*100.0 + '%)'; document.getElementById('sparklinehover').style.display = 'none'; } @@ -1473,8 +1471,8 @@ var hide_hover = function(e, color) { /** * @param {number} num_viewers */ -var update_num_viewers = function(num_viewers) { - var text = ""; +let update_num_viewers = function(num_viewers) { + let text = ""; if (num_viewers === null) { text = ""; } else if (num_viewers == 1) { @@ -1483,7 +1481,7 @@ var update_num_viewers = function(num_viewers) { text = num_viewers + " current viewers"; } if (display_fen !== null) { - var counter = Math.floor(display_fen.split(" ")[4] / 2); + let counter = Math.floor(display_fen.split(" ")[4] / 2); if (counter >= 20) { text = text.replace("current ", ""); text += " | 50-move rule: " + counter; @@ -1492,14 +1490,14 @@ var update_num_viewers = function(num_viewers) { document.getElementById("numviewers").textContent = text; } -var update_clock = function() { +let update_clock = function() { clearTimeout(clock_timer); - var data = displayed_analysis_data || current_analysis_data; + let data = displayed_analysis_data || current_analysis_data; if (!data) return; if (data['position']) { - var result = data['position']['result']; + let result = data['position']['result']; if (result === '1-0') { document.getElementById("whiteclock").textContent = "1"; document.getElementById("blackclock").textContent = "0"; @@ -1523,8 +1521,8 @@ var update_clock = function() { } } - var white_clock_ms = null; - var black_clock_ms = null; + let white_clock_ms = null; + let black_clock_ms = null; // Static clocks. if (data['position'] && @@ -1535,7 +1533,7 @@ var update_clock = function() { } // Dynamic clock (only one, obviously). - var color; + let color; if (data['position']['white_clock_target']) { color = "white"; document.getElementById("whiteclock").classList.add("running-clock"); @@ -1548,9 +1546,9 @@ var update_clock = function() { document.getElementById("whiteclock").classList.remove("running-clock"); document.getElementById("blackclock").classList.remove("running-clock"); } - var remaining_ms; + let remaining_ms; if (color) { - var now = new Date().getTime() + client_clock_offset_ms; + let now = new Date().getTime() + client_clock_offset_ms; remaining_ms = data['position'][color + '_clock_target'] * 1000 - now; if (color === "white") { white_clock_ms = remaining_ms; @@ -1567,11 +1565,11 @@ var update_clock = function() { // If either player has twenty minutes or less left, add the second counters. // This matches what DGT clocks do. - var show_seconds = (white_clock_ms < 60 * 20 * 1000 || black_clock_ms < 60 * 20 * 1000); + let show_seconds = (white_clock_ms < 60 * 20 * 1000 || black_clock_ms < 60 * 20 * 1000); if (color) { // See when the clock will change next, and update right after that. - var next_update_ms; + let next_update_ms; if (show_seconds) { next_update_ms = remaining_ms % 1000 + 100; } else { @@ -1588,7 +1586,7 @@ var update_clock = function() { * @param {Number} remaining_ms * @param {boolean} show_seconds */ -var format_clock = function(remaining_ms, show_seconds) { +let format_clock = function(remaining_ms, show_seconds) { if (remaining_ms <= 0) { if (show_seconds) { return "00:00:00"; @@ -1597,12 +1595,12 @@ var format_clock = function(remaining_ms, show_seconds) { } } - var remaining = Math.floor(remaining_ms / 1000); - var seconds = remaining % 60; + let remaining = Math.floor(remaining_ms / 1000); + let seconds = remaining % 60; remaining = (remaining - seconds) / 60; - var minutes = remaining % 60; + let minutes = remaining % 60; remaining = (remaining - minutes) / 60; - var hours = remaining; + let hours = remaining; if (show_seconds) { return format_2d(hours) + ":" + format_2d(minutes) + ":" + format_2d(seconds); } else { @@ -1613,7 +1611,7 @@ var format_clock = function(remaining_ms, show_seconds) { /** * @param {Number} x */ -var format_2d = function(x) { +let format_2d = function(x) { if (x >= 10) { return x; } else { @@ -1626,8 +1624,8 @@ var format_2d = function(x) { * @param {Number} move_num Move number of this move. * @param {boolean} white_to_play Whether white is to play this move. */ -var format_move_with_number = function(move, move_num, white_to_play) { - var ret; +let format_move_with_number = function(move, move_num, white_to_play) { + let ret; if (white_to_play) { ret = move_num + '. '; } else { @@ -1642,7 +1640,7 @@ var format_move_with_number = function(move, move_num, white_to_play) { * @param {Number} halfmove_num Half-move number that is to be played, * starting from 0. */ -var format_halfmove_with_number = function(move, halfmove_num) { +let format_halfmove_with_number = function(move, halfmove_num) { return format_move_with_number( move, Math.floor(halfmove_num / 2) + 1, @@ -1653,13 +1651,13 @@ var format_halfmove_with_number = function(move, halfmove_num) { * @param {Object} data * @param {Number} halfmove_num */ -var format_tooltip = function(data, halfmove_num) { +let format_tooltip = function(data, halfmove_num) { if (data['score_history'][halfmove_num + 1] || (halfmove_num + 1) === data['position']['history'].length) { // Position is in the history, or it is the current position // (which is implicitly tacked onto the history). - var move; - var short_score; + let move; + let short_score; if ((halfmove_num + 1) === data['position']['history'].length) { move = data['position']['last_move']; short_score = format_short_score(data['score']); @@ -1670,13 +1668,13 @@ var format_tooltip = function(data, halfmove_num) { if (halfmove_num === -1) { return "Start position: " + short_score; } else { - var move_with_number = format_halfmove_with_number(move, halfmove_num); + let move_with_number = format_halfmove_with_number(move, halfmove_num); return "After " + move_with_number + ": " + short_score; } } else { - for (var i = halfmove_num; i --> -1; ) { + for (let i = halfmove_num; i --> -1; ) { if (data['score_history'][i]) { - var move = data['position']['history'][i]; + let move = data['position']['history'][i]; if (i === -1) { return "[Analysis kept from start position]"; } else { @@ -1690,7 +1688,7 @@ var format_tooltip = function(data, halfmove_num) { /** * @param {boolean} truncate_history */ -var set_truncate_history = function(truncate_history) { +let set_truncate_history = function(truncate_history) { truncate_display_history = truncate_history; update_refutation_lines(); } @@ -1700,7 +1698,7 @@ window['set_truncate_history'] = set_truncate_history; * @param {number} line_num * @param {number} move_num */ -var show_line = function(line_num, move_num) { +let show_line = function(line_num, move_num) { if (line_num == -1) { current_display_line = null; current_display_move = null; @@ -1726,7 +1724,7 @@ var show_line = function(line_num, move_num) { } window['show_line'] = show_line; -var prev_move = function() { +let prev_move = function() { if (current_display_line && current_display_move >= current_display_line.start_display_move_num) { --current_display_move; @@ -1737,7 +1735,7 @@ var prev_move = function() { } window['prev_move'] = prev_move; -var next_move = function() { +let next_move = function() { if (current_display_line && current_display_move < current_display_line.pv.length - 1) { ++current_display_move; @@ -1748,16 +1746,16 @@ var next_move = function() { } window['next_move'] = next_move; -var next_game = function() { +let next_game = function() { if (current_games === null) { return; } // Try to find the game we are currently looking at. - for (var game_num = 0; game_num < current_games.length; ++game_num) { - var game = current_games[game_num]; + for (let game_num = 0; game_num < current_games.length; ++game_num) { + let game = current_games[game_num]; if (game['url'] === backend_url) { - var next_game_num = (game_num + 1) % current_games.length; + let next_game_num = (game_num + 1) % current_games.length; switch_backend(current_games[next_game_num]); return; } @@ -1766,7 +1764,7 @@ var next_game = function() { // Couldn't find it; give up. } -var update_historic_analysis = function() { +let update_historic_analysis = function() { if (!current_display_line_is_history) { return; } @@ -1776,8 +1774,8 @@ var update_historic_analysis = function() { } // Fetch old analysis for this line if it exists. - var hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move); - var filename = "/history/move" + (current_display_move + 1) + "-" + + let hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move); + let filename = "/history/move" + (current_display_move + 1) + "-" + hiddenboard.fen().replace(/ /g, '_').replace(/\//g, '-') + ".json"; let handle_err = () => { @@ -1811,15 +1809,15 @@ var update_historic_analysis = function() { /** * @param {string} fen */ -var update_imbalance = function(fen) { - var hiddenboard = new Chess(fen); - var imbalance = {'k': 0, 'q': 0, 'r': 0, 'b': 0, 'n': 0, 'p': 0}; - for (var row = 0; row < 8; ++row) { - for (var col = 0; col < 8; ++col) { - var col_text = String.fromCharCode('a1'.charCodeAt(0) + col); - var row_text = String.fromCharCode('a1'.charCodeAt(1) + row); - var square = col_text + row_text; - var contents = hiddenboard.get(square); +let update_imbalance = function(fen) { + let hiddenboard = new Chess(fen); + let imbalance = {'k': 0, 'q': 0, 'r': 0, 'b': 0, 'n': 0, 'p': 0}; + for (let row = 0; row < 8; ++row) { + for (let col = 0; col < 8; ++col) { + let col_text = String.fromCharCode('a1'.charCodeAt(0) + col); + let row_text = String.fromCharCode('a1'.charCodeAt(1) + row); + let square = col_text + row_text; + let contents = hiddenboard.get(square); if (contents !== null) { if (contents.color === 'w') { ++imbalance[contents.type]; @@ -1829,14 +1827,14 @@ var update_imbalance = function(fen) { } } } - var white_imbalance = ''; - var black_imbalance = ''; - for (var piece in imbalance) { - for (var i = 0; i < imbalance[piece]; ++i) { + let white_imbalance = ''; + let black_imbalance = ''; + for (let piece in imbalance) { + for (let i = 0; i < imbalance[piece]; ++i) { white_imbalance += '<img src="' + svg_pieces['w' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-piece">'; white_imbalance += '<img src="' + svg_pieces['b' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-inverted-piece">'; } - for (var i = 0; i < -imbalance[piece]; ++i) { + for (let i = 0; i < -imbalance[piece]; ++i) { black_imbalance += '<img src="' + svg_pieces['b' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-piece">'; black_imbalance += '<img src="' + svg_pieces['w' + piece.toUpperCase()] + '" alt="" style="width: 15px;height: 15px;" class="imbalance-inverted-piece">'; } @@ -1849,12 +1847,12 @@ var update_imbalance = function(fen) { * Also replaces the PV with the current displayed line if it's not shown * anywhere else on the screen. */ -var update_move_highlight = function() { +let update_move_highlight = function() { if (highlighted_move !== null) { highlighted_move.classList.remove('highlight'); } if (current_display_line) { - var display_line_num = find_display_line_matching_num(); + let display_line_num = find_display_line_matching_num(); if (display_line_num === null) { // Replace the PV with the (complete) line. document.getElementById("pvtitle").textContent = "Exploring:"; @@ -1881,14 +1879,14 @@ var update_move_highlight = function() { * * @return {?number} */ -var find_display_line_matching_num = function() { - for (var i = 0; i < display_lines.length; ++i) { - var line = display_lines[i]; +let find_display_line_matching_num = function() { + for (let i = 0; i < display_lines.length; ++i) { + let line = display_lines[i]; if (line.start_display_move_num > 0) continue; if (current_display_line.start_fen !== line.start_fen) continue; if (current_display_line.pv.length !== line.pv.length) continue; - var ok = true; - for (var j = 0; j < line.pv.length; ++j) { + let ok = true; + for (let j = 0; j < line.pv.length; ++j) { if (current_display_line.pv[j] !== line.pv[j]) { ok = false; break; @@ -1906,7 +1904,7 @@ var find_display_line_matching_num = function() { * TODO: This should really be called only whenever something changes, * instead of all the time. */ -var update_displayed_line = function() { +let update_displayed_line = function() { if (current_display_line === null) { document.getElementById("linenav").style.display = 'none'; document.getElementById("linemsg").style.display = 'revert'; @@ -1930,7 +1928,7 @@ var update_displayed_line = function() { document.getElementById("nextmove").innerHTML = "<a href=\"javascript:next_move();\">Next</a></span>"; } - var hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move); + let hiddenboard = chess_from(current_display_line.start_fen, current_display_line.pv, current_display_move); set_board_position(hiddenboard.fen()); if (display_fen !== hiddenboard.fen() && !current_display_line_is_history) { // Fire off a hash request, since we're now off the main position @@ -1941,9 +1939,9 @@ var update_displayed_line = function() { update_imbalance(hiddenboard.fen()); } -var set_board_position = function(new_fen) { +let set_board_position = function(new_fen) { board_is_animating = true; - var old_fen = board.fen(); + let old_fen = board.fen(); board.position(new_fen); if (board.fen() === old_fen) { board_is_animating = false; @@ -1953,7 +1951,7 @@ var set_board_position = function(new_fen) { /** * @param {boolean} param_enable_sound */ -var set_sound = function(param_enable_sound) { +let set_sound = function(param_enable_sound) { enable_sound = param_enable_sound; if (enable_sound) { document.getElementById("soundon").innerHTML = "<strong>On</strong>"; @@ -1961,7 +1959,7 @@ var set_sound = function(param_enable_sound) { // 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'); + let ding = document.getElementById('ding'); if (ding && ding.canPlayType && ding.canPlayType('audio/ogg; codecs="opus"') === 'probably') { ding.src = 'ding.opus'; ding.load(); @@ -1979,7 +1977,7 @@ window['set_sound'] = set_sound; /** Send off a hash probe request to the backend. * @param {string} fen */ -var explore_hash = function(fen) { +let explore_hash = function(fen) { // If we already have a backend response going, abort it. if (current_hash_xhr) { current_hash_xhr.abort(); @@ -2002,7 +2000,7 @@ var explore_hash = function(fen) { * @param {!Object} data * @param {string} fen */ -var show_explore_hash_results = function(data, fen) { +let show_explore_hash_results = function(data, fen) { if (board_is_animating) { // Updating while the animation is still going causes // the animation to jerk. This is pretty crude, but it will do. @@ -2015,8 +2013,8 @@ var show_explore_hash_results = function(data, fen) { } // almost all of this stuff comes from the chessboard.js example page -var onDragStart = function(source, piece, position, orientation) { - var pseudogame = new Chess(display_fen); +let onDragStart = function(source, piece, position, orientation) { + let pseudogame = new Chess(display_fen); if (pseudogame.game_over() === true || (pseudogame.turn() === 'w' && piece.search(/^b/) !== -1) || (pseudogame.turn() === 'b' && piece.search(/^w/) !== -1)) { @@ -2025,35 +2023,35 @@ var onDragStart = function(source, piece, position, orientation) { recommended_move = get_best_move(pseudogame, source, null, pseudogame.turn() === 'b'); if (recommended_move) { - var squareEl = document.querySelector('#board .square-' + recommended_move.to); + let squareEl = document.querySelector('#board .square-' + recommended_move.to); squareEl.classList.add('highlight1-32417'); } return true; } -var mousedownSquare = function(e) { +let mousedownSquare = function(e) { if (!e.target || !e.target.matches('.square-55d63')) { return; } reverse_dragging_from = null; - var square = e.target.getAttribute('data-square'); + let square = e.target.getAttribute('data-square'); - var pseudogame = new Chess(display_fen); + let pseudogame = new Chess(display_fen); if (pseudogame.game_over() === true) { return; } // If the square is empty, or has a piece of the side not to move, // we handle it. If not, normal piece dragging will take it. - var position = board.position(); + let position = board.position(); if (!position.hasOwnProperty(square) || (pseudogame.turn() === 'w' && position[square].search(/^b/) !== -1) || (pseudogame.turn() === 'b' && position[square].search(/^w/) !== -1)) { reverse_dragging_from = square; recommended_move = get_best_move(pseudogame, null, square, pseudogame.turn() === 'b'); if (recommended_move) { - var squareEl = document.querySelector('#board .square-' + recommended_move.from); + let squareEl = document.querySelector('#board .square-' + recommended_move.from); squareEl.classList.add('highlight1-32417'); squareEl = document.querySelector('#board .square-' + recommended_move.to); squareEl.classList.add('highlight1-32417'); @@ -2061,15 +2059,15 @@ var mousedownSquare = function(e) { } } -var mouseupSquare = function(e) { +let mouseupSquare = function(e) { if (!e.target || !e.target.matches('.square-55d63')) { return; } if (reverse_dragging_from === null) { return; } - var source = e.target.getAttribute('data-square'); - var target = reverse_dragging_from; + let source = e.target.getAttribute('data-square'); + let target = reverse_dragging_from; reverse_dragging_from = null; if (onDrop(source, target) !== 'snapback') { onSnapEnd(source, target); @@ -2079,8 +2077,8 @@ var mouseupSquare = function(e) { }); } -var get_best_move = function(game, source, target, invert) { - var moves = game.moves({ verbose: true }); +let get_best_move = function(game, source, target, invert) { + let moves = game.moves({ verbose: true }); if (source !== null) { moves = moves.filter(function(move) { return move.from == source; }); } @@ -2096,40 +2094,40 @@ var get_best_move = function(game, source, target, invert) { // More than one move. Use the display lines (if we have them) // to disambiguate; otherwise, we have no information. - var move_hash = {}; - for (var i = 0; i < moves.length; ++i) { + let move_hash = {}; + for (let i = 0; i < moves.length; ++i) { move_hash[moves[i].san] = moves[i]; } // See if we're already exploring some line. if (current_display_line && current_display_move < current_display_line.pv.length - 1) { - var first_move = current_display_line.pv[current_display_move + 1]; + let first_move = current_display_line.pv[current_display_move + 1]; if (move_hash[first_move]) { return move_hash[first_move]; } } // History and PV take priority over the display lines. - for (var i = 0; i < 2; ++i) { - var line = display_lines[i]; - var first_move = line.pv[line.start_display_move_num]; + for (let i = 0; i < 2; ++i) { + let line = display_lines[i]; + let first_move = line.pv[line.start_display_move_num]; if (move_hash[first_move]) { return move_hash[first_move]; } } - var best_move = null; - var best_move_score = null; + let best_move = null; + let best_move_score = null; - for (var move in refutation_lines) { - var line = refutation_lines[move]; + for (let move in refutation_lines) { + let line = refutation_lines[move]; if (!line['score']) { continue; } - var first_move = line['pv'][0]; + let first_move = line['pv'][0]; if (move_hash[first_move]) { - var score = compute_score_sort_key(line['score'], line['depth'], invert); + let score = compute_score_sort_key(line['score'], line['depth'], invert); if (best_move_score === null || score > best_move_score) { best_move = move_hash[first_move]; best_move_score = score; @@ -2139,7 +2137,7 @@ var get_best_move = function(game, source, target, invert) { return best_move; } -var onDrop = function(source, target) { +let onDrop = function(source, target) { if (source === target) { if (recommended_move === null) { return 'snapback'; @@ -2153,8 +2151,8 @@ var onDrop = function(source, target) { } // see if the move is legal - var pseudogame = new Chess(display_fen); - var move = pseudogame.move({ + let pseudogame = new Chess(display_fen); + let move = pseudogame.move({ from: source, to: target, promotion: 'q' // NOTE: always promote to a queen for example simplicity @@ -2164,14 +2162,14 @@ var onDrop = function(source, target) { if (move === null) return 'snapback'; } -var onSnapEnd = function(source, target) { +let onSnapEnd = function(source, target) { if (source === target && recommended_move !== null) { source = recommended_move.from; target = recommended_move.to; } recommended_move = null; - var pseudogame = new Chess(display_fen); - var move = pseudogame.move({ + let pseudogame = new Chess(display_fen); + let move = pseudogame.move({ from: source, to: target, promotion: 'q' // NOTE: always promote to a queen for example simplicity @@ -2187,12 +2185,12 @@ var onSnapEnd = function(source, target) { // Walk down the displayed lines until we find one that starts with // this move, then select that. Note that this gives us a good priority // order (history first, then PV, then multi-PV lines). - for (var i = 0; i < display_lines.length; ++i) { + for (let i = 0; i < display_lines.length; ++i) { if (i == 1 && current_display_line) { // Do not choose PV if not on it. continue; } - var line = display_lines[i]; + let line = display_lines[i]; if (line.pv[line.start_display_move_num] === move.san) { show_line(i, 0); return; @@ -2204,7 +2202,7 @@ var onSnapEnd = function(source, target) { } // End of dragging-related code. -var fmt_cp = function(v) { +let fmt_cp = function(v) { if (v === 0) { return "0.00"; } else if (v > 0) { @@ -2215,12 +2213,12 @@ var fmt_cp = function(v) { } } -var format_short_score = function(score) { +let format_short_score = function(score) { if (!score) { return "???"; } if (score[0] === 'T' || score[0] === 't') { - var ret = "TB\u00a0"; + let ret = "TB\u00a0"; if (score[2]) { // Is a bound. ret = score[2] + "\u00a0TB\u00a0"; } @@ -2230,7 +2228,7 @@ var format_short_score = function(score) { return ret + "-" + Math.ceil(score[1] / 2); } } else if (score[0] === 'M' || score[0] === 'm') { - var sign = (score[0] === 'm') ? '-' : ''; + let sign = (score[0] === 'm') ? '-' : ''; if (score[2]) { // Is a bound. return score[2] + "\u00a0M " + sign + score[1]; } else { @@ -2248,7 +2246,7 @@ var format_short_score = function(score) { return null; } -var format_long_score = function(score) { +let format_long_score = function(score) { if (!score) { return "???"; } @@ -2284,7 +2282,7 @@ var format_long_score = function(score) { return null; } -var compute_plot_score = function(score) { +let compute_plot_score = function(score) { if (score[0] === 'M' || score[0] === 'T') { return 500; } else if (score[0] === 'm' || score[0] === 't') { @@ -2310,8 +2308,8 @@ var compute_plot_score = function(score) { * @param {boolean=} depth_secondary_key * @return {number} */ -var compute_score_sort_key = function(score, depth, invert, depth_secondary_key) { - var s; +let compute_score_sort_key = function(score, depth, invert, depth_secondary_key) { + let s; if (!score) { return -10000000; } @@ -2347,7 +2345,7 @@ var compute_score_sort_key = function(score, depth, invert, depth_secondary_key) /** * @param {Object} game */ -var switch_backend = function(game) { +let switch_backend = function(game) { // Stop looking at historic data. current_display_line = null; current_display_move = null; @@ -2407,11 +2405,11 @@ const svg_pieces = { 'bP': 'data:image/svg+xml,<?xml version=%221.0%22 encoding=%22UTF-8%22 standalone=%22no%22?>%0A<!DOCTYPE svg PUBLIC %22-//W3C//DTD SVG 1.1//EN%22 %22http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd%22>%0A<svg xmlns=%22http://www.w3.org/2000/svg%22 version=%221.1%22 width=%2245%22 height=%2245%22><path d=%22m 22.5,9 c -2.21,0 -4,1.79 -4,4 0,0.89 0.29,1.71 0.78,2.38 C 17.33,16.5 16,18.59 16,21 c 0,2.03 0.94,3.84 2.41,5.03 C 15.41,27.09 11,31.58 11,39.5 H 34 C 34,31.58 29.59,27.09 26.59,26.03 28.06,24.84 29,23.03 29,21 29,18.59 27.67,16.5 25.72,15.38 26.21,14.71 26.5,13.89 26.5,13 c 0,-2.21 -1.79,-4 -4,-4 z%22 style=%22opacity:1;fill:%23000000;fill-opacity:1;fill-rule:nonzero;stroke:%23000000;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1%22/></svg>', }; -var svg_piece_theme = function(piece) { +let svg_piece_theme = function(piece) { return svg_pieces[piece]; } -var init = function() { +let init = function() { unique = get_unique(); // Load settings from HTML5 local storage if available. @@ -2447,7 +2445,7 @@ var init = function() { } else if (event.which == 37) { // Right arrow. prev_move(); } else if (event.which >= 49 && event.which <= 57) { // 1-9. - var num = event.which - 49; + let num = event.which - 49; if (current_games && current_games.length >= num) { switch_backend(current_games[num]); } -- 2.39.2