5160 lines
171 KiB
JavaScript
5160 lines
171 KiB
JavaScript
/*
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* pgn4web javascript chessboard
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* copyright (C) 2009-2025 Paolo Casaschi
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* see README file and http://pgn4web.casaschi.net
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* for credits, license and more details
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*/
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"use strict";
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var pgn4web_version = '3.08';
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var pgn4web_project_url = "http://pgn4web.casaschi.net";
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var pgn4web_project_author = "Paolo Casaschi";
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var pgn4web_project_email = "pgn4web@casaschi.net";
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var helpWin;
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function displayHelp(section) {
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if (helpWin && !helpWin.closed) {
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helpWin.close();
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}
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helpWin = window.open(detectHelpLocation() + (section ? "?" + section : ""), "pgn4web_help", "resizable=yes,scrollbars=yes,toolbar=no,location=no,menubar=no,status=no");
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if (helpWin && window.focus) {
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helpWin.focus();
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}
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}
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// empty event APIs to be redefined
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function customFunctionOnPgnTextLoad() {
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}
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function customFunctionOnPgnGameLoad() {
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}
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function customFunctionOnMove() {
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}
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function customFunctionOnAlert(msg) {
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}
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function customFunctionOnCheckLiveBroadcastStatus() {
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}
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// custom header tags APIs for customFunctionOnPgnGameLoad
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function customPgnHeaderTag(customTag, htmlElementId, gameNum) {
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var matches, tag = "";
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customTag = customTag.replace(/\W+/g, "");
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if (gameNum === undefined) {
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gameNum = currentGame;
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}
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if ((pgnHeader[gameNum]) && (matches = pgnHeader[gameNum].match('\\[\\s*' + customTag + '\\s*\"([^\"]+)\"\\s*\\]'))) {
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tag = matches[1];
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}
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if (htmlElementId) {
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var theObj = document.getElementById(htmlElementId);
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if ((theObj) && (typeof (theObj.innerHTML) == "string")) {
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theObj.innerHTML = tag;
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}
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}
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return tag;
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}
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// custom comment tags API for customFunctionOnMove
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function customPgnCommentTag(customTag, htmlElementId, plyNum, varId) {
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var matches, tag = "", theObj;
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customTag = customTag.replace(/\W+/g, "");
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if (typeof (varId) == "undefined") {
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varId = 0;
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}
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if (typeof (plyNum) == "undefined") {
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plyNum = CurrentPly;
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}
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if ((MoveCommentsVar[varId][plyNum]) && (matches = MoveCommentsVar[varId][plyNum].match('\\[%' + customTag + '\\s+((?:,?(?:"[^"]*"|[^,\\]]*))*)\\s*\\]'))) {
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tag = matches[1].replace(/\s+$/, "");
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}
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if ((htmlElementId) && (theObj = document.getElementById(htmlElementId)) && (typeof (theObj.innerHTML) == "string")) {
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theObj.innerHTML = tag;
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}
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return tag;
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}
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function simpleAddEvent(obj, evt, cbk) {
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if (obj.addEventListener) {
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obj.addEventListener(evt, cbk, false);
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} else if (obj.attachEvent) {
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obj.attachEvent("on" + evt, cbk);
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} // bugfix: IE8 and below specific
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}
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simpleAddEvent(document, "keydown", pgn4web_handleKey_event);
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simpleAddEvent(window, "load", pgn4web_onload_event);
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function pgn4web_onload_event(e) {
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pgn4web_onload(e);
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}
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function pgn4web_onload(e) {
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start_pgn4web();
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}
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function start_pgn4web() {
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// keep startup logs at the very first run, otherwise reset
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if (alertFirstResetLoadingPgn) {
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alertFirstResetLoadingPgn = false;
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} else {
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resetAlert();
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}
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InitImages();
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createBoard();
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pgn4web_initTouchEvents();
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}
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var alertLog;
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var alertLast;
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var alertNum;
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var alertNumSinceReset;
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var fatalErrorNumSinceReset;
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var alertPromptInterval = null;
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var alertPromptOn = false;
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var alertFirstResetLoadingPgn = true;
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resetAlert();
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function resetAlert() {
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alertLog = new Array(5);
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alertLast = alertLog.length - 1;
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alertNum = alertNumSinceReset = fatalErrorNumSinceReset = 0;
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stopAlertPrompt();
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if (!alertFirstResetLoadingPgn) {
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if (boardIsDefault(debugShortcutSquare)) {
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boardShortcut(debugShortcutSquare, "pgn4web v" + pgn4web_version + " debug info", null, true);
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}
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}
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}
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function myAlert(msg, fatalError, doNotPrompt) {
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alertNum++;
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alertNumSinceReset++;
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if (fatalError) {
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fatalErrorNumSinceReset++;
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}
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alertLast = (alertLast + 1) % alertLog.length;
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alertLog[alertLast] = msg + "\n" + (new Date()).toLocaleString();
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if (boardIsDefault(debugShortcutSquare)) {
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boardShortcut(debugShortcutSquare, "pgn4web v" + pgn4web_version + " debug info\n" + alertNum + " alert" + (alertNum > 1 ? "s" : ""), null, true);
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}
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if ((!doNotPrompt) && ((LiveBroadcastDelay === 0) || (LiveBroadcastAlert === true)) && (boardIsDefault(debugShortcutSquare))) {
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startAlertPrompt();
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}
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customFunctionOnAlert(msg);
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}
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function startAlertPrompt() {
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if (alertPromptOn) {
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return;
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} // dont start flashing twice
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if (alertPromptInterval) {
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clearTimeout(alertPromptInterval);
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}
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alertPromptInterval = setTimeout("alertPromptTick(true);", 500);
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}
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function stopAlertPrompt() {
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if (alertPromptInterval) {
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clearTimeout(alertPromptInterval);
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alertPromptInterval = null;
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}
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if (alertPromptOn) {
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alertPromptTick(false);
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}
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}
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function alertPromptTick(restart) {
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if (alertPromptInterval) {
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clearTimeout(alertPromptInterval);
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alertPromptInterval = null;
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}
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var colRow = colRowFromSquare(debugShortcutSquare);
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if (!colRow) {
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return;
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}
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var alertPromptDelay = 1500; // for alerts before the board is printed
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var theObj = document.getElementById('tcol' + colRow.col + 'trow' + colRow.row);
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if (theObj) {
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if (alertPromptOn) {
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if ((highlightOption) && ((colFromHighlighted === 0 && rowFromHighlighted === 7) || (colToHighlighted === 0 && rowToHighlighted === 7))) {
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theObj.className = 'highlightWhiteSquare';
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} else {
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theObj.className = 'whiteSquare';
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}
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} else {
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theObj.className = 'blackSquare';
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}
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alertPromptOn = !alertPromptOn;
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if (alertPromptOn) {
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alertPromptDelay = 500;
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} else {
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alertPromptDelay = 3000;
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}
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}
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if (restart) {
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alertPromptInterval = setTimeout("alertPromptTick(true);", alertPromptDelay);
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}
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}
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function stopEvProp(e) {
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e.cancelBubble = true;
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if (e.stopPropagation) {
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e.stopPropagation();
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}
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if (e.preventDefault) {
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e.preventDefault();
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}
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return false;
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}
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// for onFocus/onBlur textbox events, allowing text typing
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var shortcutKeysWereEnabled = false;
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function disableShortcutKeysAndStoreStatus() {
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if ((shortcutKeysWereEnabled = shortcutKeysEnabled) === true) {
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SetShortcutKeysEnabled(false);
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}
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}
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function restoreShortcutKeysStatus() {
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if (shortcutKeysWereEnabled === true) {
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SetShortcutKeysEnabled(true);
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}
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shortcutKeysWereEnabled = false;
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}
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function customShortcutKey_Shift_0() {
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}
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function customShortcutKey_Shift_1() {
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}
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function customShortcutKey_Shift_2() {
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}
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function customShortcutKey_Shift_3() {
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}
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function customShortcutKey_Shift_4() {
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}
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function customShortcutKey_Shift_5() {
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}
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function customShortcutKey_Shift_6() {
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}
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function customShortcutKey_Shift_7() {
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}
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function customShortcutKey_Shift_8() {
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}
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function customShortcutKey_Shift_9() {
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}
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function pgn4web_handleKey_event(e) {
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pgn4web_handleKey(e);
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}
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var shortcutKeysEnabled = false;
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function pgn4web_handleKey(e) {
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var keycode, oldPly, oldVar, colRow, colRowList;
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if (!e) {
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e = window.event;
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}
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if (e.altKey || e.ctrlKey || e.metaKey) {
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return true;
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}
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keycode = e.keyCode;
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// shift-escape always enabled: toggle shortcut keys
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if (!shortcutKeysEnabled && !(keycode == 27 && e.shiftKey)) {
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return true;
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}
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switch (keycode) {
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case 8: // backspace
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case 9: // tab
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case 16: // shift
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case 17: // ctrl
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case 18: // alt
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case 32: // space
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case 33: // page-up
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case 34: // page-down
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case 35: // end
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case 36: // home
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case 92: // super
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case 93: // menu
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case 188: // comma
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return true;
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case 27: // escape
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if (e.shiftKey) {
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interactivelyToggleShortcutKeys();
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} else {
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displayHelp();
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}
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break;
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case 189: // dash
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if (colRowList = prompt("Enter shortcut square coordinates to click:", "")) {
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colRowList = colRowList.toUpperCase().replace(/[^A-Z0-9]/g, "");
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while (colRow = colRowFromSquare(colRowList)) {
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boardOnClick[colRow.col][colRow.row]({"id": "img_tcol" + colRow.col + "trow" + colRow.row}, e);
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colRowList = colRowList.substr(2);
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}
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}
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break;
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case 90: // z
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if (e.shiftKey) {
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window.open(pgn4web_project_url);
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} else {
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displayDebugInfo();
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}
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break;
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case 37: // left-arrow
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case 74: // j
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backButton(e);
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break;
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case 38: // up-arrow
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case 72: // h
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startButton(e);
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break;
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case 39: // right-arrow
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case 75: // k
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forwardButton(e);
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break;
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case 40: // down-arrow
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case 76: // l
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endButton(e);
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break;
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case 73: // i
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MoveToPrevComment(e.shiftKey);
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break;
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case 79: // o
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MoveToNextComment(e.shiftKey);
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break;
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case 190: // dot
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if (e.shiftKey) {
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goToFirstChild();
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} else {
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goToNextVariationSibling();
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}
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break;
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case 85: // u
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if (e.shiftKey) {
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undoStackRedo();
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} else {
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undoStackUndo();
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}
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break;
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case 45: // insert
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undoStackRedo();
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break;
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case 46: // delete
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undoStackUndo();
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break;
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case 83: // s
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if (e.shiftKey) {
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searchPgnGame("");
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} else {
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searchPgnGamePrompt();
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}
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break;
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case 13: // enter
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if (e.shiftKey) {
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searchPgnGame(lastSearchPgnExpression, true);
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} else {
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searchPgnGame(lastSearchPgnExpression);
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}
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break;
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case 68: // d
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if (e.shiftKey) {
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displayFenData();
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} else {
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displayPgnData(true);
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}
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break;
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case 187: // equal
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SwitchAutoPlay();
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break;
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case 65: // a
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GoToMove(CurrentPly + 1);
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SetAutoPlay(true);
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break;
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case 48: // 0
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if (e.shiftKey) {
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customShortcutKey_Shift_0();
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} else {
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SetAutoPlay(false);
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}
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break;
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case 49: // 1
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if (e.shiftKey) {
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customShortcutKey_Shift_1();
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} else {
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SetAutoplayDelayAndStart(1 * 1000);
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}
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break;
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case 50: // 2
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if (e.shiftKey) {
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customShortcutKey_Shift_2();
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} else {
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SetAutoplayDelayAndStart(2 * 1000);
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}
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break;
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case 51: // 3
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if (e.shiftKey) {
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customShortcutKey_Shift_3();
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} else {
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SetAutoplayDelayAndStart(3 * 1000);
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}
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break;
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case 52: // 4
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if (e.shiftKey) {
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customShortcutKey_Shift_4();
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} else {
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SetAutoplayDelayAndStart(4 * 1000);
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}
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break;
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case 53: // 5
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if (e.shiftKey) {
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customShortcutKey_Shift_5();
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} else {
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SetAutoplayDelayAndStart(5 * 1000);
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}
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break;
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case 54: // 6
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if (e.shiftKey) {
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customShortcutKey_Shift_6();
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} else {
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SetAutoplayDelayAndStart(6 * 1000);
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}
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break;
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case 55: // 7
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if (e.shiftKey) {
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customShortcutKey_Shift_7();
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} else {
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SetAutoplayDelayAndStart(7 * 1000);
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}
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break;
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case 56: // 8
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if (e.shiftKey) {
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customShortcutKey_Shift_8();
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} else {
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SetAutoplayDelayAndStart(8 * 1000);
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}
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break;
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case 57: // 9
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if (e.shiftKey) {
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customShortcutKey_Shift_9();
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} else {
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setCustomAutoplayDelay();
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}
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break;
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case 81: // q
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SetAutoplayDelayAndStart(10 * 1000);
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break;
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case 87: // w
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SetAutoplayDelayAndStart(20 * 1000);
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break;
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case 69: // e
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SetAutoplayDelayAndStart(30 * 1000);
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break;
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case 82: // r
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pauseLiveBroadcast();
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break;
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case 84: // t
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if (e.shiftKey) {
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LiveBroadcastSteppingMode = !LiveBroadcastSteppingMode;
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} else {
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refreshPgnSource();
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}
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break;
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case 89: // y
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restartLiveBroadcast();
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break;
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case 70: // f
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if (!e.shiftKey || IsRotated) {
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FlipBoard();
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}
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break;
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case 71: // g
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SetHighlight(!highlightOption);
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break;
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case 88: // x
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randomGameRandomPly();
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break;
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case 67: // c
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if (numberOfGames > 1) {
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Init(Math.floor(Math.random() * numberOfGames));
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}
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break;
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case 86: // v
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if (numberOfGames > 1) {
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Init(0);
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}
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break;
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case 66: // b
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Init(currentGame - 1);
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break;
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case 78: // n
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Init(currentGame + 1);
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break;
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case 77: // m
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if (numberOfGames > 1) {
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Init(numberOfGames - 1);
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}
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break;
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case 80: // p
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if (e.shiftKey) {
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SetCommentsOnSeparateLines(!commentsOnSeparateLines);
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} else {
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SetCommentsIntoMoveText(!commentsIntoMoveText);
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}
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oldPly = CurrentPly;
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oldVar = CurrentVar;
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Init();
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GoToMove(oldPly, oldVar);
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break;
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default:
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return true;
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}
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return stopEvProp(e);
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}
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|
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var boardOnClick = new Array(8);
|
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var boardTitle = new Array(8);
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var boardDefault = new Array(8);
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for (var col = 0; col < 8; col++) {
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boardOnClick[col] = new Array(8);
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boardTitle[col] = new Array(8);
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boardDefault[col] = new Array(8);
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}
|
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clearShortcutSquares("ABCDEFGH", "12345678");
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|
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function colRowFromSquare(square) {
|
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if ((typeof (square) != "string") || (!square)) {
|
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return null;
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}
|
|
var col = square.charCodeAt(0) - 65; // 65="A"
|
|
if ((col < 0) || (col > 7)) {
|
|
return null;
|
|
}
|
|
var row = 56 - square.charCodeAt(1); // 56="8"
|
|
if ((row < 0) || (row > 7)) {
|
|
return null;
|
|
}
|
|
return {"col": col, "row": row};
|
|
}
|
|
|
|
function clearShortcutSquares(cols, rows) {
|
|
if ((typeof (cols) != "string") || (typeof (rows) != "string")) {
|
|
return;
|
|
}
|
|
for (var c = 0; c < cols.length; c++) {
|
|
for (var r = 0; r < rows.length; r++) {
|
|
boardShortcut(cols.charAt(c).toUpperCase() + rows.charAt(r), "", function (t, e) {
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
function boardIsDefault(square) {
|
|
var colRow = colRowFromSquare(square);
|
|
if (!colRow) {
|
|
return false;
|
|
}
|
|
return boardDefault[colRow.col][colRow.row];
|
|
}
|
|
|
|
function boardShortcut(square, title, functionPointer, defaultSetting) {
|
|
var theObj, colRow = colRowFromSquare(square);
|
|
if (!colRow) {
|
|
return;
|
|
} else {
|
|
var col = colRow.col;
|
|
var row = colRow.row;
|
|
}
|
|
boardTitle[col][row] = title;
|
|
if (functionPointer) {
|
|
boardOnClick[col][row] = functionPointer;
|
|
}
|
|
boardDefault[col][row] = defaultSetting ? true : false;
|
|
if (theObj = document.getElementById('img_tcol' + col + 'trow' + row)) {
|
|
if (IsRotated) {
|
|
square = String.fromCharCode(72 - col, 49 + row);
|
|
}
|
|
theObj.title = square + (boardTitle[col][row] ? ': ' + boardTitle[col][row] : '');
|
|
}
|
|
}
|
|
|
|
// boardShortcut() always assumes 'square' defined as with white on bottom
|
|
|
|
var debugShortcutSquare = "A8";
|
|
|
|
|
|
boardShortcut("A8", "pgn4web v" + pgn4web_version + " debug info", function (t, e) {
|
|
displayDebugInfo();
|
|
}, true);
|
|
|
|
boardShortcut("B8", "show current position FEN string", function (t, e) {
|
|
displayFenData();
|
|
}, true);
|
|
|
|
boardShortcut("C8", "show current game PGN source data", function (t, e) {
|
|
if (e.shiftKey) {
|
|
savePgnData(true);
|
|
} else {
|
|
displayPgnData(true);
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("D8", "show all games PGN source data", function (t, e) {
|
|
if (e.shiftKey) {
|
|
savePgnData();
|
|
} else {
|
|
displayPgnData();
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("E8", "search help", function (t, e) {
|
|
displayHelp("search_tool");
|
|
}, true);
|
|
|
|
boardShortcut("F8", "shortcut keys help", function (t, e) {
|
|
displayHelp("shortcut_keys");
|
|
}, true);
|
|
|
|
boardShortcut("G8", "shortcut squares help", function (t, e) {
|
|
displayHelp(e.shiftKey ? "informant_symbols" : "shortcut_squares");
|
|
}, true);
|
|
|
|
boardShortcut("H8", "pgn4web help", function (t, e) {
|
|
displayHelp(e.shiftKey ? "credits_and_license" : "");
|
|
}, true);
|
|
|
|
boardShortcut("A7", "pgn4web website", function (t, e) {
|
|
window.open(pgn4web_project_url);
|
|
}, true);
|
|
|
|
boardShortcut("B7", "undo last chessboard position update", function (t, e) {
|
|
undoStackUndo();
|
|
}, true);
|
|
|
|
boardShortcut("C7", "redo last undo", function (t, e) {
|
|
undoStackRedo();
|
|
}, true);
|
|
|
|
boardShortcut("D7", "toggle highlight last move", function (t, e) {
|
|
SetHighlight(!highlightOption);
|
|
}, true);
|
|
|
|
boardShortcut("E7", "flip board", function (t, e) {
|
|
if (!e.shiftKey || IsRotated) {
|
|
FlipBoard();
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("F7", "toggle show comments in game text", function (t, e) {
|
|
if (e.shiftKey) {
|
|
SetCommentsOnSeparateLines(!commentsOnSeparateLines);
|
|
} else {
|
|
SetCommentsIntoMoveText(!commentsIntoMoveText);
|
|
}
|
|
var oldPly = CurrentPly;
|
|
var oldVar = CurrentVar;
|
|
Init();
|
|
GoToMove(oldPly, oldVar);
|
|
}, true);
|
|
|
|
boardShortcut("G7", "", function (t, e) {
|
|
}, true); // see setG7A6B6H6...
|
|
|
|
boardShortcut("H7", "toggle enabling shortcut keys", function (t, e) {
|
|
interactivelyToggleShortcutKeys();
|
|
}, true);
|
|
|
|
boardShortcut("A6", "", function (t, e) {
|
|
}, true); // see setG7A6B6H6...
|
|
|
|
boardShortcut("B6", "", function (t, e) {
|
|
}, true); // see setG7A6B6H6...
|
|
|
|
boardShortcut("C6", "search previous finished game", function (t, e) {
|
|
searchPgnGame('\\[\\s*Result\\s*"(?!\\*"\\s*\\])', true);
|
|
});
|
|
|
|
boardShortcut("D6", "search previous unfinished game", function (t, e) {
|
|
searchPgnGame('\\[\\s*Result\\s*"\\*"\\s*\\]', true);
|
|
});
|
|
|
|
boardShortcut("E6", "search next unfinished game", function (t, e) {
|
|
searchPgnGame('\\[\\s*Result\\s*"\\*"\\s*\\]', false);
|
|
}, true);
|
|
|
|
boardShortcut("F6", "search next finished game", function (t, e) {
|
|
searchPgnGame('\\[\\s*Result\\s*"(?!\\*"\\s*\\])', false);
|
|
}, true);
|
|
|
|
boardShortcut("G6", "", function (t, e) {
|
|
}, true);
|
|
|
|
boardShortcut("H6", "", function (t, e) {
|
|
}, true); // see setG7A6B6H6...
|
|
|
|
boardShortcut("A5", "repeat last search backward", function (t, e) {
|
|
searchPgnGame(lastSearchPgnExpression, true);
|
|
}, true);
|
|
|
|
boardShortcut("B5", "search prompt", function (t, e) {
|
|
if (e.shiftKey) {
|
|
searchPgnGame("");
|
|
} else {
|
|
searchPgnGamePrompt();
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("C5", "repeat last search", function (t, e) {
|
|
searchPgnGame(lastSearchPgnExpression);
|
|
}, true);
|
|
|
|
boardShortcut("D5", "search previous win result", function (t, e) {
|
|
searchPgnGame('\\[\\s*Result\\s*"(1-0|0-1)"\\s*\\]', true);
|
|
}, true);
|
|
|
|
boardShortcut("E5", "search next win result", function (t, e) {
|
|
searchPgnGame('\\[\\s*Result\\s*"(1-0|0-1)"\\s*\\]', false);
|
|
}, true);
|
|
|
|
boardShortcut("F5", "", function (t, e) {
|
|
}, true);
|
|
|
|
boardShortcut("G5", "", function (t, e) {
|
|
}, true);
|
|
|
|
boardShortcut("H5", "", function (t, e) {
|
|
}, true);
|
|
|
|
boardShortcut("A4", "search previous event", function (t, e) {
|
|
searchPgnGame('\\[\\s*Event\\s*"(?!' + fixRegExp(gameEvent[currentGame]) + '"\\s*\\])', true);
|
|
}, true);
|
|
|
|
boardShortcut("B4", "search previous round of same event", function (t, e) {
|
|
searchPgnGame('\\[\\s*Event\\s*"' + fixRegExp(gameEvent[currentGame]) + '"\\s*\\].*\\[\\s*Round\\s*"(?!' + fixRegExp(gameRound[currentGame]) + '"\\s*\\])|\\[\\s*Round\\s*"(?!' + fixRegExp(gameRound[currentGame]) + '"\\s*\\]).*\\[\\s*Event\\s*"' + fixRegExp(gameEvent[currentGame]) + '"\\s*\\]', true);
|
|
}, true);
|
|
|
|
boardShortcut("C4", "search previous game of same black player", function (t, e) {
|
|
searchPgnGame('\\[\\s*' + (e.shiftKey ? 'White' : 'Black') + '\\s*"' + fixRegExp(gameBlack[currentGame]) + '"\\s*\\]', true);
|
|
}, true);
|
|
|
|
boardShortcut("D4", "search previous game of same white player", function (t, e) {
|
|
searchPgnGame('\\[\\s*' + (e.shiftKey ? 'Black' : 'White') + '\\s*"' + fixRegExp(gameWhite[currentGame]) + '"\\s*\\]', true);
|
|
}, true);
|
|
|
|
boardShortcut("E4", "search next game of same white player", function (t, e) {
|
|
searchPgnGame('\\[\\s*' + (e.shiftKey ? 'Black' : 'White') + '\\s*"' + fixRegExp(gameWhite[currentGame]) + '"\\s*\\]', false);
|
|
}, true);
|
|
|
|
boardShortcut("F4", "search next game of same black player", function (t, e) {
|
|
searchPgnGame('\\[\\s*' + (e.shiftKey ? 'White' : 'Black') + '\\s*"' + fixRegExp(gameBlack[currentGame]) + '"\\s*\\]', false);
|
|
}, true);
|
|
|
|
boardShortcut("G4", "search next round of same event", function (t, e) {
|
|
searchPgnGame('\\[\\s*Event\\s*"' + fixRegExp(gameEvent[currentGame]) + '"\\s*\\].*\\[\\s*Round\\s*"(?!' + fixRegExp(gameRound[currentGame]) + '"\\s*\\])|\\[\\s*Round\\s*"(?!' + fixRegExp(gameRound[currentGame]) + '"\\s*\\]).*\\[\\s*Event\\s*"' + fixRegExp(gameEvent[currentGame]) + '"\\s*\\]', false);
|
|
}, true);
|
|
|
|
boardShortcut("H4", "search next event", function (t, e) {
|
|
searchPgnGame('\\[\\s*Event\\s*"(?!' + fixRegExp(gameEvent[currentGame]) + '"\\s*\\])', false);
|
|
}, true);
|
|
|
|
boardShortcut("A3", "load first game", function (t, e) {
|
|
if (numberOfGames > 1) {
|
|
Init(0);
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("B3", "jump to previous games decile", function (t, e) {
|
|
if (currentGame > 0) {
|
|
calculateDeciles();
|
|
for (var ii = (deciles.length - 2); ii >= 0; ii--) {
|
|
if (currentGame > deciles[ii]) {
|
|
Init(deciles[ii]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("C3", "load previous game", function (t, e) {
|
|
Init(currentGame - 1);
|
|
}, true);
|
|
|
|
boardShortcut("D3", "load random game", function (t, e) {
|
|
if (numberOfGames > 1) {
|
|
Init(Math.floor(Math.random() * numberOfGames));
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("E3", "load random game at random position", function (t, e) {
|
|
randomGameRandomPly();
|
|
}, true);
|
|
|
|
boardShortcut("F3", "load next game", function (t, e) {
|
|
Init(currentGame + 1);
|
|
}, true);
|
|
|
|
boardShortcut("G3", "jump to next games decile", function (t, e) {
|
|
if (currentGame < numberOfGames - 1) {
|
|
calculateDeciles();
|
|
for (var ii = 1; ii < deciles.length; ii++) {
|
|
if (currentGame < deciles[ii]) {
|
|
Init(deciles[ii]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("H3", "load last game", function (t, e) {
|
|
if (numberOfGames > 1) {
|
|
Init(numberOfGames - 1);
|
|
}
|
|
}, true);
|
|
|
|
boardShortcut("A2", "stop autoplay", function (t, e) {
|
|
SetAutoPlay(e.shiftKey);
|
|
}, true);
|
|
|
|
boardShortcut("B2", "toggle autoplay", function (t, e) {
|
|
SwitchAutoPlay();
|
|
}, true);
|
|
|
|
boardShortcut("C2", "autoplay 1 second", function (t, e) {
|
|
SetAutoplayDelayAndStart((e.shiftKey ? 10 : 1) * 1000);
|
|
}, true);
|
|
|
|
boardShortcut("D2", "autoplay 2 seconds", function (t, e) {
|
|
SetAutoplayDelayAndStart((e.shiftKey ? 20 : 2) * 1000);
|
|
}, true);
|
|
|
|
boardShortcut("E2", "autoplay 5 seconds", function (t, e) {
|
|
SetAutoplayDelayAndStart((e.shiftKey ? 50 : 5) * 1000);
|
|
}, true);
|
|
|
|
boardShortcut("F2", "autoplay custom delay", function (t, e) {
|
|
setCustomAutoplayDelay();
|
|
}, true);
|
|
|
|
boardShortcut("G2", "replay up to 6 previous half-moves, then autoplay forward", function (t, e) {
|
|
replayPreviousMoves(e.shiftKey ? 10 : 6);
|
|
}, true);
|
|
|
|
boardShortcut("H2", "replay the previous half-move, then autoplay forward", function (t, e) {
|
|
replayPreviousMoves(e.shiftKey ? 3 : 1);
|
|
}, true);
|
|
|
|
boardShortcut("A1", "go to game start", function (t, e) {
|
|
startButton(e);
|
|
}, true);
|
|
|
|
boardShortcut("B1", "", function (t, e) {
|
|
}, true); // see setB1C1F1G1...
|
|
|
|
boardShortcut("C1", "", function (t, e) {
|
|
}, true); // see setB1C1F1G1...
|
|
|
|
boardShortcut("D1", "move backward", function (t, e) {
|
|
backButton(e);
|
|
}, true);
|
|
|
|
boardShortcut("E1", "move forward", function (t, e) {
|
|
forwardButton(e);
|
|
}, true);
|
|
|
|
boardShortcut("F1", "", function (t, e) {
|
|
}, true); // see setB1C1F1G1...
|
|
|
|
boardShortcut("G1", "", function (t, e) {
|
|
}, true); // see setB1C1F1G1...
|
|
|
|
boardShortcut("H1", "go to game end", function (t, e) {
|
|
endButton(e);
|
|
}, true);
|
|
|
|
|
|
setG7A6B6H7boardShortcuts();
|
|
|
|
function setG7A6B6H7boardShortcuts() {
|
|
if (LiveBroadcastDelay > 0) {
|
|
if (boardIsDefault("G7")) {
|
|
boardShortcut("G7", "", function (t, e) {
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("A6")) {
|
|
boardShortcut("A6", "pause live broadcast automatic games refresh", function (t, e) {
|
|
pauseLiveBroadcast();
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("B6")) {
|
|
boardShortcut("B6", "restart live broadcast automatic games refresh", function (t, e) {
|
|
restartLiveBroadcast();
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("H6")) {
|
|
boardShortcut("H6", "force live broadcast games refresh", function (t, e) {
|
|
refreshPgnSource();
|
|
}, true);
|
|
}
|
|
} else {
|
|
if (boardIsDefault("G7")) {
|
|
boardShortcut("G7", "toggle autoplay next game", function (t, e) {
|
|
SetAutoplayNextGame(!autoplayNextGame);
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("A6")) {
|
|
boardShortcut("A6", "", function (t, e) {
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("B6")) {
|
|
boardShortcut("B6", "", function (t, e) {
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("H6")) {
|
|
boardShortcut("H6", "", function (t, e) {
|
|
}, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
setB1C1F1G1boardShortcuts();
|
|
|
|
function setB1C1F1G1boardShortcuts() {
|
|
if (commentsIntoMoveText && GameHasComments) {
|
|
if (boardIsDefault("B1")) {
|
|
boardShortcut("B1", "find previous comment or variation", function (t, e) {
|
|
if (e.shiftKey) {
|
|
GoToMove(CurrentPly - 10);
|
|
} else {
|
|
MoveToPrevComment();
|
|
}
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("G1")) {
|
|
boardShortcut("G1", "find next comment or variation", function (t, e) {
|
|
if (e.shiftKey) {
|
|
GoToMove(CurrentPly + 10);
|
|
} else {
|
|
MoveToNextComment();
|
|
}
|
|
}, true);
|
|
}
|
|
} else {
|
|
if (boardIsDefault("B1")) {
|
|
boardShortcut("B1", "move 10 half-moves backward", function (t, e) {
|
|
GoToMove(CurrentPly - 10);
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("G1")) {
|
|
boardShortcut("G1", "move 10 half-moves forward", function (t, e) {
|
|
GoToMove(CurrentPly + 10);
|
|
}, true);
|
|
}
|
|
}
|
|
if (commentsIntoMoveText && GameHasVariations) {
|
|
if (boardIsDefault("C1")) {
|
|
boardShortcut("C1", "go to parent variation", function (t, e) {
|
|
if (e.shiftKey) {
|
|
GoToMove(CurrentPly - 6);
|
|
} else {
|
|
GoToMove(StartPlyVar[CurrentVar]);
|
|
}
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("F1")) {
|
|
boardShortcut("F1", "cycle through alternative variations, if any, otherwise move forward", function (t, e) {
|
|
if (e.shiftKey) {
|
|
GoToMove(CurrentPly + 6);
|
|
} else {
|
|
if (!goToNextVariationSibling()) {
|
|
GoToMove(CurrentPly + 1);
|
|
}
|
|
}
|
|
}, true);
|
|
}
|
|
} else {
|
|
if (boardIsDefault("C1")) {
|
|
boardShortcut("C1", "move 6 half-moves backward", function (t, e) {
|
|
GoToMove(CurrentPly - 6);
|
|
}, true);
|
|
}
|
|
if (boardIsDefault("F1")) {
|
|
boardShortcut("F1", "move 6 half-moves forward", function (t, e) {
|
|
GoToMove(CurrentPly + 6);
|
|
}, true);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
var deciles = new Array(11);
|
|
|
|
function calculateDeciles() {
|
|
for (var ii = 0; ii < deciles.length; ii++) {
|
|
deciles[ii] = Math.round((numberOfGames - 1) * ii / (deciles.length - 1));
|
|
}
|
|
}
|
|
|
|
function replayPreviousMoves(numPlies) {
|
|
var thisPly = numPlies ? CurrentPly - numPlies : StartPly;
|
|
if (thisPly < StartPlyVar[CurrentVar]) {
|
|
thisPly = StartPlyVar[CurrentVar] + (CurrentVar === 0 ? 0 : 1);
|
|
}
|
|
if (thisPly !== CurrentPly) {
|
|
GoToMove(thisPly);
|
|
}
|
|
SetAutoPlay(true);
|
|
}
|
|
|
|
function detectJavascriptLocation(jsre) {
|
|
if (typeof (jsre) == "undefined") {
|
|
jsre = new RegExp("pgn4web(|-compacted|\.min)\.js$", "");
|
|
}
|
|
var e = document.getElementsByTagName("script");
|
|
for (var i = 0; i < e.length; i++) {
|
|
if ((e[i].src) && (e[i].src.match(jsre))) {
|
|
return e[i].src;
|
|
}
|
|
}
|
|
return "";
|
|
}
|
|
|
|
function detectHelpLocation() {
|
|
return detectJavascriptLocation().replace(/pgn4web(|-compacted|\.min)\.js$/, "pgn4web-help.html");
|
|
}
|
|
|
|
function detectBaseLocation() {
|
|
var e = document.getElementsByTagName("base");
|
|
for (var i = 0; i < e.length; i++) {
|
|
if (e[i].href) {
|
|
return e[i].href;
|
|
}
|
|
}
|
|
return "";
|
|
}
|
|
|
|
|
|
var debugWin;
|
|
|
|
function displayDebugInfo() {
|
|
var theObj;
|
|
var bu = detectBaseLocation();
|
|
var ju = detectJavascriptLocation();
|
|
stopAlertPrompt();
|
|
var dbg1 = 'pgn4web: version=' + pgn4web_version + ' homepage=' + pgn4web_project_url + '\n\nHTMLURL: length=' + location.href.length + ' url=';
|
|
var dbg2 = location.href.length < 100 ? location.href : (location.href.substring(0, 99) + '...');
|
|
var dbg3 = (bu ? '\nBASEURL: url=' + bu : '') + (ju != 'pgn4web.js' ? '\nJSURL: url=' + ju : '');
|
|
if (pgnUrl) {
|
|
dbg3 += '\nPGNURL: url=' + pgnUrl;
|
|
} else if (theObj = document.getElementById("pgnText")) {
|
|
dbg3 += '\nPGNTEXT: length=' + (theObj.tagName.toLowerCase() == 'textarea' ? theObj.value.length : '?');
|
|
}
|
|
dbg3 += '\n' + (numberOfGames > 1 ? '\nGAME: current=' + (currentGame + 1) + ' number=' + numberOfGames : '') + (numberOfVars > 1 ? '\nVARIATION: current=' + CurrentVar + ' number=' + (numberOfVars - 1) : '') + (PlyNumber > 0 ? '\nPLY: start=' + StartPly + ' current=' + CurrentPly + ' number=' + PlyNumber : '') + '\nAUTOPLAY: status=' + (isAutoPlayOn ? 'on' : 'off') + ' delay=' + Delay + 'ms' + ' next=' + autoplayNextGame;
|
|
if ((typeof (gameVariant[currentGame]) !== "undefined") && (gameVariant[currentGame].match(/^\s*(|chess|normal|standard)\s*$/i) === null)) {
|
|
dbg3 += '\nVARIANT: ' + gameVariant[currentGame];
|
|
}
|
|
if (LiveBroadcastDelay > 0) {
|
|
dbg3 += '\n\nLIVEBROADCAST: status=' + liveStatusDebug() + (LiveBroadcastEndlessMode ? '/endless ' : '') + ' ticker=' + LiveBroadcastTicker + ' delay=' + LiveBroadcastDelay + 'm' + '\n' + 'refreshed: ' + LiveBroadcastLastRefreshedLocal + '\n' + 'received: ' + LiveBroadcastLastReceivedLocal + '\n' + 'modified (server time): ' + LiveBroadcastLastModified_ServerTime();
|
|
}
|
|
if (typeof (engineWinCheck) == "function") {
|
|
dbg3 += '\n\nANALYSIS: ' + (engineWinCheck() ? 'board=connected ' + engineWin.customDebugInfo() : 'board=disconnected');
|
|
}
|
|
var thisInfo = customDebugInfo();
|
|
if (thisInfo) {
|
|
dbg3 += '\n\nCUSTOM: ' + thisInfo;
|
|
}
|
|
dbg3 += '\n\nALERTLOG: fatalnew=' + fatalErrorNumSinceReset + ' new=' + alertNumSinceReset + ' shown=' + Math.min(alertNum, alertLog.length) + ' total=' + alertNum + '\n--';
|
|
if (alertNum > 0) {
|
|
for (var ii = 0; ii < alertLog.length; ii++) {
|
|
if (alertLog[(alertNum - 1 - ii) % alertLog.length] === undefined) {
|
|
break;
|
|
} else {
|
|
dbg3 += "\n" + alertLog[(alertNum - 1 - ii) % alertLog.length] + "\n--";
|
|
}
|
|
}
|
|
}
|
|
if (confirm(dbg1 + dbg2 + dbg3 + '\n\nclick OK to show this debug info in a browser window for cut and paste')) {
|
|
if (debugWin && !debugWin.closed) {
|
|
debugWin.close();
|
|
}
|
|
debugWin = window.open("", "pgn4web_debug_data", "resizable=yes,scrollbars=yes,toolbar=no,location=no,menubar=no,status=no");
|
|
if (debugWin) {
|
|
debugWin.document.open("text/html", "replace");
|
|
debugWin.document.write("<html><head><title>pgn4web debug info</title><link rel='icon' sizes='16x16' href='pawn.ico' /></head><body>\n<pre>\n" + dbg1 + location.href + " " + dbg3 + "\n</pre>\n</body></html>");
|
|
debugWin.document.close();
|
|
if (window.focus) {
|
|
debugWin.focus();
|
|
}
|
|
}
|
|
}
|
|
alertNumSinceReset = fatalErrorNumSinceReset = 0;
|
|
}
|
|
|
|
function liveStatusDebug() {
|
|
if (LiveBroadcastEnded) {
|
|
return "ended";
|
|
}
|
|
if (LiveBroadcastPaused) {
|
|
return "paused";
|
|
}
|
|
if (LiveBroadcastStarted) {
|
|
return "started";
|
|
}
|
|
return "waiting";
|
|
}
|
|
|
|
function customDebugInfo() {
|
|
return "";
|
|
}
|
|
|
|
var pgnWin;
|
|
|
|
function displayPgnData(oneGameOnly) {
|
|
if (pgnWin && !pgnWin.closed) {
|
|
pgnWin.close();
|
|
}
|
|
pgnWin = window.open("", "pgn4web_pgn_data", "resizable=yes,scrollbars=yes,toolbar=no,location=no,menubar=no,status=no");
|
|
if (pgnWin) {
|
|
var text = "<html><head><title>pgn4web PGN source</title><link rel='icon' sizes='16x16' href='pawn.ico' /></head><body>\n<pre>\n";
|
|
if (oneGameOnly) {
|
|
text += fullPgnGame(currentGame) + "\n\n";
|
|
} else {
|
|
for (var ii = 0; ii < numberOfGames; ++ii) {
|
|
text += fullPgnGame(ii) + "\n\n";
|
|
}
|
|
}
|
|
text += "\n</pre>\n</body></html>";
|
|
pgnWin.document.open("text/html", "replace");
|
|
pgnWin.document.write(text);
|
|
pgnWin.document.close();
|
|
if (window.focus) {
|
|
pgnWin.focus();
|
|
}
|
|
}
|
|
}
|
|
|
|
function savePgnData(oneGameOnly) {
|
|
if (pgnUrl && !oneGameOnly) {
|
|
location.href = pgnUrl;
|
|
} else {
|
|
displayPgnData(oneGameOnly); // fallback on displayPgnData for now
|
|
}
|
|
}
|
|
|
|
function CurrentFEN() {
|
|
var thisFEN = "";
|
|
|
|
var emptySquares = 0;
|
|
for (var row = 7; row >= 0; row--) {
|
|
for (var col = 0; col <= 7; col++) {
|
|
if (Board[col][row] === 0) {
|
|
emptySquares++;
|
|
} else {
|
|
if (emptySquares) {
|
|
thisFEN += emptySquares;
|
|
emptySquares = 0;
|
|
}
|
|
if (Board[col][row] > 0) {
|
|
thisFEN += PiecesArr[Board[col][row] - 1].toUpperCase();
|
|
} else if (Board[col][row] < 0) {
|
|
thisFEN += PiecesArr[-Board[col][row] - 1].toLowerCase();
|
|
}
|
|
}
|
|
}
|
|
if (emptySquares) {
|
|
thisFEN += emptySquares;
|
|
emptySquares = 0;
|
|
}
|
|
if (row > 0) {
|
|
thisFEN += "/";
|
|
}
|
|
}
|
|
|
|
thisFEN += CurrentPly % 2 ? " b" : " w";
|
|
|
|
// castling availability: always in the KQkq form
|
|
// knownbug: wrong FEN for Chess960 positions with inner castling rook
|
|
var CastlingFEN = "";
|
|
if (RookForOOCastling(0) !== null) {
|
|
CastlingFEN += PiecesArr[0].toUpperCase();
|
|
}
|
|
if (RookForOOOCastling(0) !== null) {
|
|
CastlingFEN += PiecesArr[1].toUpperCase();
|
|
}
|
|
if (RookForOOCastling(1) !== null) {
|
|
CastlingFEN += PiecesArr[0].toLowerCase();
|
|
}
|
|
if (RookForOOOCastling(1) !== null) {
|
|
CastlingFEN += PiecesArr[1].toLowerCase();
|
|
}
|
|
thisFEN += " " + (CastlingFEN || "-");
|
|
|
|
if (HistEnPassant[CurrentPly]) {
|
|
thisFEN += " " + String.fromCharCode(HistEnPassantCol[CurrentPly] + 97);
|
|
thisFEN += CurrentPly % 2 ? "3" : "6";
|
|
} else {
|
|
thisFEN += " -";
|
|
}
|
|
|
|
var HalfMoveClock = InitialHalfMoveClock;
|
|
for (var thisPly = StartPly; thisPly < CurrentPly; thisPly++) {
|
|
if ((HistType[0][thisPly] == 6) || (HistPieceId[1][thisPly] >= 16)) {
|
|
HalfMoveClock = 0;
|
|
} else {
|
|
HalfMoveClock++;
|
|
}
|
|
}
|
|
thisFEN += " " + HalfMoveClock;
|
|
|
|
thisFEN += " " + (Math.floor(CurrentPly / 2) + 1);
|
|
|
|
return thisFEN;
|
|
}
|
|
|
|
var fenWin;
|
|
|
|
function displayFenData(addGametext) {
|
|
if (fenWin && !fenWin.closed) {
|
|
fenWin.close();
|
|
}
|
|
|
|
var thisFEN = CurrentFEN();
|
|
|
|
var movesStr = "";
|
|
var lineStart = 0;
|
|
if (addGametext) {
|
|
for (var thisPly = CurrentPly; thisPly <= StartPly + PlyNumber; thisPly++) {
|
|
var addStr = "";
|
|
if (thisPly == StartPly + PlyNumber) {
|
|
addStr = (CurrentVar ? "*" : gameResult[currentGame] || "*");
|
|
} else {
|
|
if (thisPly % 2 === 0) {
|
|
addStr = (Math.floor(thisPly / 2) + 1) + ". ";
|
|
} else if (thisPly == CurrentPly) {
|
|
addStr = (Math.floor(thisPly / 2) + 1) + "... ";
|
|
}
|
|
addStr += Moves[thisPly];
|
|
}
|
|
if (movesStr.length + addStr.length + 1 > lineStart + 80) {
|
|
lineStart = movesStr.length;
|
|
movesStr += "\n" + addStr;
|
|
} else {
|
|
if (movesStr.length > 0) {
|
|
movesStr += " ";
|
|
}
|
|
movesStr += addStr;
|
|
}
|
|
}
|
|
}
|
|
|
|
fenWin = window.open("", "pgn4web_fen_data", "resizable=yes,scrollbars=yes,toolbar=no,location=no,menubar=no,status=no");
|
|
if (fenWin) {
|
|
var text = "<html><head><title>pgn4web FEN string</title><link rel='icon' sizes='16x16' href='pawn.ico' /></head><body>\n<b><pre>\n\n" + thisFEN + "\n\n</pre></b>\n<hr>\n<pre>\n\n";
|
|
if (addGametext) {
|
|
text += "[Event \"" + ((CurrentVar ? "" : gameEvent[currentGame]) || "?") + "\"]\n";
|
|
text += "[Site \"" + ((CurrentVar ? "" : gameSite[currentGame]) || "?") + "\"]\n";
|
|
text += "[Date \"" + ((CurrentVar ? "" : gameDate[currentGame]) || "????.??.??") + "\"]\n";
|
|
text += "[Round \"" + ((CurrentVar ? "" : gameRound[currentGame]) || "?") + "\"]\n";
|
|
text += "[White \"" + ((CurrentVar ? "" : gameWhite[currentGame]) || "?") + "\"]\n";
|
|
text += "[Black \"" + ((CurrentVar ? "" : gameBlack[currentGame]) || "?") + "\"]\n";
|
|
text += "[Result \"" + ((CurrentVar ? "" : gameResult[currentGame]) || "*") + "\"]\n";
|
|
}
|
|
if ((thisFEN != FenStringStart) || (!addGametext)) {
|
|
text += "[SetUp \"1\"]\n" + "[FEN \"" + thisFEN + "\"]\n";
|
|
}
|
|
if (gameVariant[currentGame] !== "") {
|
|
text += "[Variant \"" + gameVariant[currentGame] + "\"]\n";
|
|
}
|
|
if (addGametext) {
|
|
text += "\n" + movesStr + "\n";
|
|
}
|
|
text += "</pre>\n</body></html>";
|
|
fenWin.document.open("text/html", "replace");
|
|
fenWin.document.write(text);
|
|
fenWin.document.close();
|
|
if (window.focus) {
|
|
fenWin.focus();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
var pgnHeader = new Array();
|
|
var pgnGame = new Array();
|
|
var numberOfGames = -1;
|
|
var currentGame = -1;
|
|
|
|
var firstStart = true;
|
|
|
|
var gameDate = new Array();
|
|
var gameWhite = new Array();
|
|
var gameBlack = new Array();
|
|
var gameEvent = new Array();
|
|
var gameSite = new Array();
|
|
var gameRound = new Array();
|
|
var gameResult = new Array();
|
|
var gameSetUp = new Array();
|
|
var gameFEN = new Array();
|
|
var gameInitialWhiteClock = new Array();
|
|
var gameInitialBlackClock = new Array();
|
|
var gameVariant = new Array();
|
|
|
|
var highlightedMoveId = "";
|
|
|
|
var isAutoPlayOn = false;
|
|
var AutoPlayInterval = null;
|
|
var Delay = 1000; // milliseconds
|
|
var autostartAutoplay = false;
|
|
var autoplayNextGame = false;
|
|
|
|
var initialGame = 1;
|
|
var initialVariation = 0;
|
|
var initialHalfmove = 0;
|
|
var alwaysInitialHalfmove = false;
|
|
|
|
var LiveBroadcastInterval = null;
|
|
var LiveBroadcastDelay = 0; // minutes
|
|
var LiveBroadcastAlert = false;
|
|
var LiveBroadcastDemo = false;
|
|
var LiveBroadcastStarted = false;
|
|
var LiveBroadcastEnded = false;
|
|
var LiveBroadcastPaused = false;
|
|
var LiveBroadcastTicker = 0;
|
|
var LiveBroadcastGamesRunning = 0;
|
|
var LiveBroadcastLastModified = new Date(0); // default to epoch start
|
|
var LiveBroadcastLastModifiedHeader = LiveBroadcastLastModified.toUTCString();
|
|
var LiveBroadcastLastReceivedLocal = 'unavailable';
|
|
var LiveBroadcastLastRefreshedLocal = 'unavailable';
|
|
var LiveBroadcastPlaceholderEvent = 'live chess broadcast';
|
|
var LiveBroadcastPlaceholderPgn = '[Event "' + LiveBroadcastPlaceholderEvent + '"]';
|
|
var gameDemoMaxPly = new Array();
|
|
var gameDemoLength = new Array();
|
|
var LiveBroadcastSteppingMode = false;
|
|
var LiveBroadcastEndlessMode = false;
|
|
|
|
var ParseLastMoveError = false;
|
|
|
|
var castleRook = -1;
|
|
var mvCapture = 0;
|
|
var mvIsCastling = 0;
|
|
var mvIsPromotion = 0;
|
|
var mvFromCol = -1;
|
|
var mvFromRow = -1;
|
|
var mvToCol = -1;
|
|
var mvToRow = -1;
|
|
var mvPiece = -1;
|
|
var mvPieceId = -1;
|
|
var mvPieceOnTo = -1;
|
|
var mvCaptured = -1;
|
|
var mvCapturedId = -1;
|
|
var mvIsNull = 0;
|
|
|
|
var Board = new Array(8);
|
|
for (var i = 0; i < 8; ++i) {
|
|
Board[i] = new Array(8);
|
|
}
|
|
|
|
// HistCol, HistRow: move history up to last replayed ply
|
|
// HistCol[0], HistRow[0]: "square from"; 0..7, 0..7 from A1
|
|
// HistCol[1], HistRow[1]: castling/capture
|
|
// HistCol[2], HistRow[2]: "square to"; 0..7, 0..7 from A1
|
|
|
|
var HistCol = new Array(3);
|
|
var HistRow = new Array(3);
|
|
var HistPieceId = new Array(2);
|
|
var HistType = new Array(2);
|
|
var HistVar = new Array();
|
|
|
|
var PieceCol = new Array(2);
|
|
var PieceRow = new Array(2);
|
|
var PieceType = new Array(2);
|
|
var PieceMoveCounter = new Array(2);
|
|
|
|
for (i = 0; i < 2; ++i) {
|
|
PieceCol[i] = new Array(16);
|
|
PieceRow[i] = new Array(16);
|
|
PieceType[i] = new Array(16);
|
|
PieceMoveCounter[i] = new Array(16);
|
|
HistType[i] = new Array();
|
|
HistPieceId[i] = new Array();
|
|
}
|
|
|
|
for (i = 0; i < 3; ++i) {
|
|
HistCol[i] = new Array();
|
|
HistRow[i] = new Array();
|
|
}
|
|
|
|
var HistEnPassant = new Array();
|
|
HistEnPassant[0] = false;
|
|
var HistEnPassantCol = new Array();
|
|
HistEnPassantCol[0] = -1;
|
|
|
|
var HistNull = new Array();
|
|
HistNull[0] = 0;
|
|
|
|
var PiecesArr = "KQRBNP".split("");
|
|
var FenStringStart = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
|
|
var columnsLetters = "ABCDEFGH";
|
|
var InitialHalfMoveClock = 0;
|
|
|
|
var PieceImg = new Array(new Array(6), new Array(6));
|
|
var ClearImg;
|
|
|
|
var ImagePath = 'images';
|
|
var ImagePathOld = null;
|
|
var imageType = 'png';
|
|
var defaultImagesSize = 40;
|
|
|
|
var highlightOption = true;
|
|
|
|
var commentsIntoMoveText = true;
|
|
var commentsOnSeparateLines = false;
|
|
|
|
var pgnUrl = '';
|
|
|
|
var CastlingLong = new Array(2);
|
|
var CastlingShort = new Array(2);
|
|
var Moves = new Array();
|
|
var MoveComments = new Array();
|
|
|
|
var MoveColor;
|
|
var MoveCount;
|
|
var PlyNumber;
|
|
var StartPly;
|
|
var CurrentPly;
|
|
|
|
var IsRotated = false;
|
|
|
|
var pgnHeaderTagRegExp = /\[\s*(\w+)\s*"([^"]*)"\s*\]/;
|
|
var pgnHeaderTagRegExpGlobal = /\[\s*(\w+)\s*"([^"]*)"\s*\]/g;
|
|
var pgnHeaderBlockRegExp = /\s*(\[\s*\w+\s*"[^"]*"\s*\]\s*)+/;
|
|
|
|
var emptyPgnHeader = '[Event ""]\n[Site ""]\n[Date ""]\n[Round ""]\n[White ""]\n[Black ""]\n[Result ""]\n';
|
|
var alertPgn = emptyPgnHeader + "\n{error: click on the top left chessboard square for debug info}";
|
|
|
|
var pgn4webVariationRegExp = /\[%pgn4web_variation (\d+)\]/;
|
|
var pgn4webVariationRegExpGlobal = /\[%pgn4web_variation (\d+)\]/g;
|
|
|
|
var gameSelectorHead = ' ···';
|
|
var gameSelectorMono = true;
|
|
var gameSelectorNum = false;
|
|
var gameSelectorNumLenght = 0;
|
|
var gameSelectorChEvent = 0;
|
|
var gameSelectorChSite = 0;
|
|
var gameSelectorChRound = 0;
|
|
var gameSelectorChWhite = 15;
|
|
var gameSelectorChBlack = 15;
|
|
var gameSelectorChResult = 0;
|
|
var gameSelectorChDate = 10;
|
|
|
|
function CheckLegality(what, plyCount) {
|
|
var retVal, thisCol;
|
|
|
|
if (what == '--') {
|
|
StoreMove(plyCount);
|
|
return true;
|
|
}
|
|
|
|
// castling
|
|
if (what == 'O-O') {
|
|
if (!CheckLegalityOO()) {
|
|
return false;
|
|
}
|
|
for (thisCol = PieceCol[MoveColor][0]; thisCol < 7; thisCol++) {
|
|
if (IsCheck(thisCol, MoveColor * 7, MoveColor)) {
|
|
return false;
|
|
}
|
|
}
|
|
StoreMove(plyCount);
|
|
return true;
|
|
} else if (what == 'O-O-O') {
|
|
if (!CheckLegalityOOO()) {
|
|
return false;
|
|
}
|
|
for (thisCol = PieceCol[MoveColor][0]; thisCol > 1; thisCol--) {
|
|
if (IsCheck(thisCol, MoveColor * 7, MoveColor)) {
|
|
return false;
|
|
}
|
|
}
|
|
StoreMove(plyCount);
|
|
return true;
|
|
}
|
|
|
|
// capture: "square to" occupied by opposite color piece (except en-passant)
|
|
if (!mvCapture) {
|
|
if (Board[mvToCol][mvToRow] !== 0) {
|
|
return false;
|
|
}
|
|
}
|
|
if ((mvCapture) && (Color(Board[mvToCol][mvToRow]) != 1 - MoveColor)) {
|
|
if ((mvPiece != 6) || (!HistEnPassant[plyCount]) || (HistEnPassantCol[plyCount] != mvToCol) || (mvToRow != 5 - 3 * MoveColor)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// promotion: "square to" moved piece different from piece
|
|
if (mvIsPromotion) {
|
|
if (mvPiece != 6) {
|
|
return false;
|
|
}
|
|
if (mvPieceOnTo >= 6) {
|
|
return false;
|
|
}
|
|
if (mvToRow != 7 * (1 - MoveColor)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// piece move: which same type piece could move there?
|
|
var howManyCandidates = 0;
|
|
var candidatePieceId = -1;
|
|
for (var pieceId = 15; pieceId >= 0; --pieceId) {
|
|
if (PieceType[MoveColor][pieceId] == mvPiece) {
|
|
if (mvPiece == 1) {
|
|
retVal = CheckLegalityKing(pieceId);
|
|
} else if (mvPiece == 2) {
|
|
retVal = CheckLegalityQueen(pieceId);
|
|
} else if (mvPiece == 3) {
|
|
retVal = CheckLegalityRook(pieceId);
|
|
} else if (mvPiece == 4) {
|
|
retVal = CheckLegalityBishop(pieceId);
|
|
} else if (mvPiece == 5) {
|
|
retVal = CheckLegalityKnight(pieceId);
|
|
} else if (mvPiece == 6) {
|
|
retVal = CheckLegalityPawn(pieceId);
|
|
}
|
|
if (retVal) {
|
|
// board updated: king in check?
|
|
mvPieceId = pieceId;
|
|
StoreMove(plyCount);
|
|
if (!IsCheck(PieceCol[MoveColor][0], PieceRow[MoveColor][0], MoveColor)) {
|
|
howManyCandidates++;
|
|
candidatePieceId = pieceId;
|
|
}
|
|
UndoMove(plyCount);
|
|
}
|
|
}
|
|
}
|
|
|
|
// patch: for rejecting rather than guessing ambiguous move replace the code till the end of this function with the following line
|
|
// if (howManyCandidates == 1) { mvPieceId = candidatePieceId; StoreMove(plyCount); return true; } else { return false; }
|
|
|
|
if (howManyCandidates > 0) {
|
|
mvPieceId = candidatePieceId;
|
|
StoreMove(plyCount);
|
|
if (howManyCandidates > 1) {
|
|
var text = (Math.floor(plyCount / 2) + 1) + ((plyCount % 2) === 0 ? '. ' : '... ');
|
|
myAlert('error: guessed ambiguous ply ' + text + MovesVar[CurrentVar][plyCount] + ' in game ' + (currentGame + 1) + ' variation ' + CurrentVar);
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
|
|
}
|
|
|
|
function CheckLegalityKing(thisKing) {
|
|
if ((mvFromCol >= 0) && (mvFromCol != PieceCol[MoveColor][thisKing])) {
|
|
return false;
|
|
}
|
|
if ((mvFromRow >= 0) && (mvFromRow != PieceRow[MoveColor][thisKing])) {
|
|
return false;
|
|
}
|
|
if (Math.abs(PieceCol[MoveColor][thisKing] - mvToCol) > 1) {
|
|
return false;
|
|
}
|
|
if (Math.abs(PieceRow[MoveColor][thisKing] - mvToRow) > 1) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function CheckLegalityQueen(thisQueen) {
|
|
if ((mvFromCol >= 0) && (mvFromCol != PieceCol[MoveColor][thisQueen])) {
|
|
return false;
|
|
}
|
|
if ((mvFromRow >= 0) && (mvFromRow != PieceRow[MoveColor][thisQueen])) {
|
|
return false;
|
|
}
|
|
if (((PieceCol[MoveColor][thisQueen] - mvToCol) * (PieceRow[MoveColor][thisQueen] - mvToRow) !== 0) && (Math.abs(PieceCol[MoveColor][thisQueen] - mvToCol) != Math.abs(PieceRow[MoveColor][thisQueen] - mvToRow))) {
|
|
return false;
|
|
}
|
|
if (!CheckClearWay(thisQueen)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function CheckLegalityRook(thisRook) {
|
|
if ((mvFromCol >= 0) && (mvFromCol != PieceCol[MoveColor][thisRook])) {
|
|
return false;
|
|
}
|
|
if ((mvFromRow >= 0) && (mvFromRow != PieceRow[MoveColor][thisRook])) {
|
|
return false;
|
|
}
|
|
if ((PieceCol[MoveColor][thisRook] - mvToCol) * (PieceRow[MoveColor][thisRook] - mvToRow) !== 0) {
|
|
return false;
|
|
}
|
|
if (!CheckClearWay(thisRook)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function CheckLegalityBishop(thisBishop) {
|
|
if ((mvFromCol >= 0) && (mvFromCol != PieceCol[MoveColor][thisBishop])) {
|
|
return false;
|
|
}
|
|
if ((mvFromRow >= 0) && (mvFromRow != PieceRow[MoveColor][thisBishop])) {
|
|
return false;
|
|
}
|
|
if (Math.abs(PieceCol[MoveColor][thisBishop] - mvToCol) != Math.abs(PieceRow[MoveColor][thisBishop] - mvToRow)) {
|
|
return false;
|
|
}
|
|
if (!CheckClearWay(thisBishop)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function CheckLegalityKnight(thisKnight) {
|
|
if ((mvFromCol >= 0) && (mvFromCol != PieceCol[MoveColor][thisKnight])) {
|
|
return false;
|
|
}
|
|
if ((mvFromRow >= 0) && (mvFromRow != PieceRow[MoveColor][thisKnight])) {
|
|
return false;
|
|
}
|
|
if (Math.abs(PieceCol[MoveColor][thisKnight] - mvToCol) * Math.abs(PieceRow[MoveColor][thisKnight] - mvToRow) != 2) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function CheckLegalityPawn(thisPawn) {
|
|
if ((mvFromCol >= 0) && (mvFromCol != PieceCol[MoveColor][thisPawn])) {
|
|
return false;
|
|
}
|
|
if ((mvFromRow >= 0) && (mvFromRow != PieceRow[MoveColor][thisPawn])) {
|
|
return false;
|
|
}
|
|
if (Math.abs(PieceCol[MoveColor][thisPawn] - mvToCol) != mvCapture) {
|
|
return false;
|
|
}
|
|
if (mvCapture) {
|
|
if (PieceRow[MoveColor][thisPawn] - mvToRow != 2 * MoveColor - 1) {
|
|
return false;
|
|
}
|
|
} else {
|
|
if (PieceRow[MoveColor][thisPawn] - mvToRow == 4 * MoveColor - 2) {
|
|
if (PieceRow[MoveColor][thisPawn] != 1 + 5 * MoveColor) {
|
|
return false;
|
|
}
|
|
if (Board[mvToCol][mvToRow + 2 * MoveColor - 1] !== 0) {
|
|
return false;
|
|
}
|
|
} else {
|
|
if (PieceRow[MoveColor][thisPawn] - mvToRow != 2 * MoveColor - 1) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function RookForOOCastling(color) {
|
|
if (CastlingShort[color] < 0) {
|
|
return null;
|
|
}
|
|
if (PieceMoveCounter[color][0] > 0) {
|
|
return null;
|
|
}
|
|
|
|
var legal = false;
|
|
for (var thisRook = 0; thisRook < 16; thisRook++) {
|
|
if ((PieceCol[color][thisRook] == CastlingShort[color]) && (PieceCol[color][thisRook] > PieceCol[color][0]) && (PieceRow[color][thisRook] == color * 7) && (PieceType[color][thisRook] == 3)) {
|
|
legal = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!legal) {
|
|
return null;
|
|
}
|
|
if (PieceMoveCounter[color][thisRook] > 0) {
|
|
return null;
|
|
}
|
|
|
|
return thisRook;
|
|
}
|
|
|
|
function CheckLegalityOO() {
|
|
|
|
var thisRook = RookForOOCastling(MoveColor);
|
|
if (thisRook === null) {
|
|
return false;
|
|
}
|
|
|
|
// check no piece between king and rook
|
|
// clear king/rook squares for Chess960
|
|
Board[PieceCol[MoveColor][0]][MoveColor * 7] = 0;
|
|
Board[PieceCol[MoveColor][thisRook]][MoveColor * 7] = 0;
|
|
var col = PieceCol[MoveColor][thisRook];
|
|
if (col < 6) {
|
|
col = 6;
|
|
}
|
|
while ((col > PieceCol[MoveColor][0]) || (col >= 5)) {
|
|
if (Board[col][MoveColor * 7] !== 0) {
|
|
return false;
|
|
}
|
|
--col;
|
|
}
|
|
castleRook = thisRook;
|
|
return true;
|
|
}
|
|
|
|
function RookForOOOCastling(color) {
|
|
if (CastlingLong[color] < 0) {
|
|
return null;
|
|
}
|
|
if (PieceMoveCounter[color][0] > 0) {
|
|
return null;
|
|
}
|
|
|
|
var legal = false;
|
|
for (var thisRook = 0; thisRook < 16; thisRook++) {
|
|
if ((PieceCol[color][thisRook] == CastlingLong[color]) && (PieceCol[color][thisRook] < PieceCol[color][0]) && (PieceRow[color][thisRook] == color * 7) && (PieceType[color][thisRook] == 3)) {
|
|
legal = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!legal) {
|
|
return null;
|
|
}
|
|
if (PieceMoveCounter[color][thisRook] > 0) {
|
|
return null;
|
|
}
|
|
|
|
return thisRook;
|
|
}
|
|
|
|
function CheckLegalityOOO() {
|
|
|
|
var thisRook = RookForOOOCastling(MoveColor);
|
|
if (thisRook === null) {
|
|
return false;
|
|
}
|
|
|
|
// check no piece between king and rook
|
|
// clear king/rook squares for Chess960
|
|
Board[PieceCol[MoveColor][0]][MoveColor * 7] = 0;
|
|
Board[PieceCol[MoveColor][thisRook]][MoveColor * 7] = 0;
|
|
var col = PieceCol[MoveColor][thisRook];
|
|
if (col > 2) {
|
|
col = 2;
|
|
}
|
|
while ((col < PieceCol[MoveColor][0]) || (col <= 3)) {
|
|
if (Board[col][MoveColor * 7] !== 0) {
|
|
return false;
|
|
}
|
|
++col;
|
|
}
|
|
castleRook = thisRook;
|
|
return true;
|
|
}
|
|
|
|
function CheckClearWay(thisPiece) {
|
|
var stepCol = sign(mvToCol - PieceCol[MoveColor][thisPiece]);
|
|
var stepRow = sign(mvToRow - PieceRow[MoveColor][thisPiece]);
|
|
var startCol = PieceCol[MoveColor][thisPiece] + stepCol;
|
|
var startRow = PieceRow[MoveColor][thisPiece] + stepRow;
|
|
while ((startCol != mvToCol) || (startRow != mvToRow)) {
|
|
if (Board[startCol][startRow] !== 0) {
|
|
return false;
|
|
}
|
|
startCol += stepCol;
|
|
startRow += stepRow;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function CleanMove(move) {
|
|
move = move.replace(/[^a-wyzA-WYZ0-9#-]*/g, ''); // patch: pgn notation: remove/add '+' 'x' '=' chars for full chess informant style or pgn style for the game text
|
|
if (move.match(/^[Oo0]/)) {
|
|
move = move.replace(/[o0]/g, 'O').replace(/O(?=O)/g, 'O-');
|
|
}
|
|
move = move.replace(/ep/i, '');
|
|
return move;
|
|
}
|
|
|
|
function GoToMove(thisPly, thisVar) {
|
|
SetAutoPlay(false);
|
|
if (typeof (thisVar) == "undefined") {
|
|
thisVar = CurrentVar;
|
|
} else {
|
|
if (thisVar < 0) {
|
|
thisVar = 0;
|
|
} else if (thisVar >= numberOfVars) {
|
|
thisVar = numberOfVars - 1;
|
|
}
|
|
}
|
|
if (thisPly < 0) {
|
|
thisPly = 0;
|
|
} else if (thisPly >= StartPlyVar[thisVar] + PlyNumberVar[thisVar]) {
|
|
thisPly = StartPlyVar[thisVar] + PlyNumberVar[thisVar];
|
|
}
|
|
|
|
if (thisVar === CurrentVar) {
|
|
var diff = thisPly - CurrentPly;
|
|
if (diff > 0) {
|
|
MoveForward(diff);
|
|
} else {
|
|
MoveBackward(-diff);
|
|
}
|
|
} else {
|
|
var backStart = StartPly;
|
|
loopCommonPredecessor:
|
|
for (var ii = PredecessorsVars[CurrentVar].length - 1; ii >= 0; ii--) {
|
|
for (var jj = PredecessorsVars[thisVar].length - 1; jj >= 0; jj--) {
|
|
if (PredecessorsVars[CurrentVar][ii] === PredecessorsVars[thisVar][jj]) {
|
|
backStart = Math.min(PredecessorsVars[CurrentVar][ii + 1] ? StartPlyVar[PredecessorsVars[CurrentVar][ii + 1]] : CurrentPly, PredecessorsVars[thisVar][jj + 1] ? StartPlyVar[PredecessorsVars[thisVar][jj + 1]] : thisPly);
|
|
break loopCommonPredecessor;
|
|
}
|
|
}
|
|
}
|
|
MoveBackward(CurrentPly - backStart, true);
|
|
MoveForward(thisPly - backStart, thisVar);
|
|
}
|
|
}
|
|
|
|
|
|
function SetShortcutKeysEnabled(onOff) {
|
|
shortcutKeysEnabled = onOff;
|
|
}
|
|
|
|
function interactivelyToggleShortcutKeys() {
|
|
if (confirm("Shortcut keys currently " + (shortcutKeysEnabled ? "enabled" : "disabled") + ".\nToggle shortcut keys to " + (shortcutKeysEnabled ? "DISABLED" : "ENABLED") + "?")) {
|
|
SetShortcutKeysEnabled(!shortcutKeysEnabled);
|
|
}
|
|
}
|
|
|
|
function SetCommentsIntoMoveText(onOff) {
|
|
commentsIntoMoveText = onOff;
|
|
}
|
|
|
|
function SetCommentsOnSeparateLines(onOff) {
|
|
commentsOnSeparateLines = onOff;
|
|
}
|
|
|
|
function SetAutostartAutoplay(onOff) {
|
|
autostartAutoplay = onOff;
|
|
}
|
|
|
|
function SetAutoplayNextGame(onOff) {
|
|
autoplayNextGame = onOff;
|
|
}
|
|
|
|
function SetInitialHalfmove(number_or_string, always) {
|
|
alwaysInitialHalfmove = (always === true);
|
|
initialHalfmove = typeof (number_or_string) == "undefined" ? 0 : number_or_string;
|
|
}
|
|
|
|
function SetInitialVariation(number) {
|
|
initialVariation = isNaN(number = parseInt(number, 10)) ? 0 : number;
|
|
}
|
|
|
|
function SetInitialGame(number_or_string) {
|
|
initialGame = typeof (number_or_string) == "undefined" ? 1 : number_or_string;
|
|
}
|
|
|
|
function randomGameRandomPly() {
|
|
if (numberOfGames > 1) {
|
|
var oldInitialHalfmove = initialHalfmove;
|
|
var oldAlwaysInitialHalfmove = alwaysInitialHalfmove;
|
|
SetInitialHalfmove("random", true);
|
|
Init(Math.floor(Math.random() * numberOfGames));
|
|
SetInitialHalfmove(oldInitialHalfmove, oldAlwaysInitialHalfmove);
|
|
}
|
|
}
|
|
|
|
|
|
// clock detection as [%clk 01:02]
|
|
|
|
function clockFromComment(plyNum) {
|
|
return customPgnCommentTag("clk", null, plyNum);
|
|
}
|
|
|
|
function clockFromHeader(whiteToMove) {
|
|
var clockString = customPgnHeaderTag("Clock") + "";
|
|
var matches = clockString.match("^" + (whiteToMove ? "W" : "B") + "/(.*)$");
|
|
if (matches) {
|
|
return matches[1];
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
function HighlightLastMove() {
|
|
var theObj, moveId, text, ii, clockString, clockRegExp, clockMatch;
|
|
|
|
undoStackStore();
|
|
|
|
// remove old move highlighting
|
|
if (highlightedMoveId) {
|
|
if (theObj = document.getElementById(highlightedMoveId)) {
|
|
theObj.className = (highlightedMoveId.match(/Var0Mv/) ? 'move' : 'variation') + ' notranslate';
|
|
}
|
|
}
|
|
|
|
// halfmove to be highlighted, negative for starting position
|
|
var showThisMove = CurrentPly - 1;
|
|
if (showThisMove > StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]) {
|
|
showThisMove = StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar];
|
|
}
|
|
|
|
if (theObj = document.getElementById("GameLastComment")) {
|
|
if (commentsIntoMoveText) {
|
|
variationTextDepth = CurrentVar === 0 ? 0 : 1;
|
|
text = '<SPAN CLASS="comment">' + strippedMoveComment(showThisMove + 1, CurrentVar, true).replace(/\sID="[^"]*"/g, '') + '</SPAN>';
|
|
} else {
|
|
text = '';
|
|
}
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
// side to move
|
|
var whiteToMove = ((showThisMove + 1) % 2 === 0);
|
|
text = whiteToMove ? 'white' : 'black';
|
|
|
|
if (theObj = document.getElementById("GameSideToMove")) {
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
// clock
|
|
var lastMoverClockObj = document.getElementById(whiteToMove ? "GameBlackClock" : "GameWhiteClock");
|
|
var initialLastMoverClock = whiteToMove ? gameInitialBlackClock[currentGame] : gameInitialWhiteClock[currentGame];
|
|
var beforeLastMoverClockObj = document.getElementById(whiteToMove ? "GameWhiteClock" : "GameBlackClock");
|
|
var initialBeforeLastMoverClock = whiteToMove ? gameInitialWhiteClock[currentGame] : gameInitialBlackClock[currentGame];
|
|
|
|
if (lastMoverClockObj) {
|
|
clockString = ((showThisMove + 1 === StartPly + PlyNumber) && ((!LiveBroadcastDemo) || (gameResult[currentGame] !== "*"))) ? clockFromHeader(!whiteToMove) : null;
|
|
if (clockString === null) {
|
|
clockString = showThisMove + 1 > StartPly ? clockFromComment(showThisMove + 1) : initialLastMoverClock;
|
|
if (!clockString && (CurrentPly === StartPly + PlyNumber)) {
|
|
// support for time info in the last comment as { White Time: 0h:12min Black Time: 1h:23min }
|
|
clockRegExp = new RegExp((whiteToMove ? "Black" : "White") + "\\s+Time:\\s*(\\S+)", "i");
|
|
if (clockMatch = strippedMoveComment(StartPly + PlyNumber).match(clockRegExp)) {
|
|
clockString = clockMatch[1];
|
|
}
|
|
}
|
|
}
|
|
lastMoverClockObj.innerHTML = clockString;
|
|
}
|
|
if (beforeLastMoverClockObj) {
|
|
clockString = ((showThisMove + 1 === StartPly + PlyNumber) && ((!LiveBroadcastDemo) || (gameResult[currentGame] !== "*"))) ? clockFromHeader(whiteToMove) : null;
|
|
if (clockString === null) {
|
|
clockString = showThisMove > StartPly ? clockFromComment(showThisMove) : initialBeforeLastMoverClock;
|
|
if (!clockString && (CurrentPly === StartPly + PlyNumber)) {
|
|
// see comment above
|
|
clockRegExp = new RegExp((whiteToMove ? "White" : "Black") + "\\s+Time:\\s*(\\S+)", "i");
|
|
if (clockMatch = strippedMoveComment(StartPly + PlyNumber).match(clockRegExp)) {
|
|
clockString = clockMatch[1];
|
|
}
|
|
}
|
|
}
|
|
beforeLastMoverClockObj.innerHTML = clockString;
|
|
}
|
|
|
|
if (lastMoverClockObj && beforeLastMoverClockObj) {
|
|
if (lastMoverClockObj.innerHTML && !beforeLastMoverClockObj.innerHTML) {
|
|
beforeLastMoverClockObj.innerHTML = "-";
|
|
} else if (!lastMoverClockObj.innerHTML && beforeLastMoverClockObj.innerHTML) {
|
|
lastMoverClockObj.innerHTML = "-";
|
|
}
|
|
}
|
|
|
|
// next move
|
|
if (theObj = document.getElementById("GameNextMove")) {
|
|
if (CurrentVar === 0 && showThisMove + 1 >= StartPly + PlyNumber) {
|
|
text = '<SPAN CLASS="move notranslate">' + gameResult[currentGame] + '</SPAN>';
|
|
} else if (typeof (Moves[showThisMove + 1]) == "undefined") {
|
|
text = "";
|
|
} else {
|
|
text = printMoveText(showThisMove + 1, CurrentVar, (CurrentVar !== 0), true, false);
|
|
}
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
// next variations
|
|
if (theObj = document.getElementById("GameNextVariations")) {
|
|
text = '';
|
|
if (commentsIntoMoveText) {
|
|
var children = childrenVars(showThisMove + 1, CurrentVar);
|
|
for (ii = 0; ii < children.length; ii++) {
|
|
if (children[ii] !== CurrentVar) {
|
|
text += ' ' + printMoveText(showThisMove + 1, children[ii], (children[ii] !== 0), true, false);
|
|
}
|
|
}
|
|
}
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
// last move
|
|
if (theObj = document.getElementById("GameLastMove")) {
|
|
if ((showThisMove >= StartPly) && Moves[showThisMove]) {
|
|
text = printMoveText(showThisMove, CurrentVar, (CurrentVar !== 0), true, false);
|
|
} else if (showThisMove === StartPly - 1) {
|
|
text = '<SPAN CLASS="move notranslate">' + (Math.floor((showThisMove + 1) / 2) + 1) + (((showThisMove + 1) % 2) ? "..." : ".") + '</SPAN>';
|
|
} else {
|
|
text = '';
|
|
}
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
// last variations
|
|
if (theObj = document.getElementById("GameLastVariations")) {
|
|
text = '';
|
|
if (commentsIntoMoveText) {
|
|
var siblings = childrenVars(showThisMove, HistVar[showThisMove]);
|
|
for (ii = 0; ii < siblings.length; ii++) {
|
|
if (siblings[ii] !== CurrentVar) {
|
|
text += ' ' + printMoveText(showThisMove, siblings[ii], (siblings[ii] !== 0), true, false);
|
|
}
|
|
}
|
|
}
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
if (showThisMove >= (StartPlyVar[CurrentVar] - 1)) {
|
|
moveId = 'Var' + CurrentVar + 'Mv' + (showThisMove + 1);
|
|
if (theObj = document.getElementById(moveId)) {
|
|
theObj.className = (CurrentVar ? 'variation variationOn' : 'move moveOn') + ' notranslate';
|
|
}
|
|
highlightedMoveId = moveId;
|
|
|
|
if (highlightOption) {
|
|
var colFrom, rowFrom, colTo, rowTo;
|
|
if ((showThisMove < StartPly) || HistNull[showThisMove]) {
|
|
colFrom = rowFrom = -1;
|
|
colTo = rowTo = -1;
|
|
} else {
|
|
colFrom = HistCol[0][showThisMove] === undefined ? -1 : HistCol[0][showThisMove];
|
|
rowFrom = HistRow[0][showThisMove] === undefined ? -1 : HistRow[0][showThisMove];
|
|
colTo = HistCol[2][showThisMove] === undefined ? -1 : HistCol[2][showThisMove];
|
|
rowTo = HistRow[2][showThisMove] === undefined ? -1 : HistRow[2][showThisMove];
|
|
}
|
|
highlightMove(colFrom, rowFrom, colTo, rowTo);
|
|
}
|
|
}
|
|
}
|
|
|
|
function SetHighlightOption(on) {
|
|
highlightOption = on;
|
|
}
|
|
|
|
function SetHighlight(on) {
|
|
SetHighlightOption(on);
|
|
if (on) {
|
|
HighlightLastMove();
|
|
} else {
|
|
highlightMove(-1, -1, -1, -1);
|
|
}
|
|
}
|
|
|
|
var colFromHighlighted = -1;
|
|
var rowFromHighlighted = -1;
|
|
var colToHighlighted = -1;
|
|
var rowToHighlighted = -1;
|
|
|
|
function highlightMove(colFrom, rowFrom, colTo, rowTo) {
|
|
highlightSquare(colFromHighlighted, rowFromHighlighted, false);
|
|
highlightSquare(colToHighlighted, rowToHighlighted, false);
|
|
if (highlightSquare(colFrom, rowFrom, true)) {
|
|
colFromHighlighted = colFrom;
|
|
rowFromHighlighted = rowFrom;
|
|
} else {
|
|
colFromHighlighted = rowFromHighlighted = -1;
|
|
}
|
|
if (highlightSquare(colTo, rowTo, true)) {
|
|
colToHighlighted = colTo;
|
|
rowToHighlighted = rowTo;
|
|
} else {
|
|
colToHighlighted = rowToHighlighted = -1;
|
|
}
|
|
}
|
|
|
|
function highlightSquare(col, row, on) {
|
|
if ((col === undefined) || (row === undefined)) {
|
|
return false;
|
|
}
|
|
if (!SquareOnBoard(col, row)) {
|
|
return false;
|
|
}
|
|
var trow = IsRotated ? row : 7 - row;
|
|
var tcol = IsRotated ? 7 - col : col;
|
|
var theObj = document.getElementById('tcol' + tcol + 'trow' + trow);
|
|
if (!theObj) {
|
|
return false;
|
|
}
|
|
if (on) {
|
|
theObj.className = (trow + tcol) % 2 === 0 ? "highlightWhiteSquare" : "highlightBlackSquare";
|
|
} else {
|
|
theObj.className = (trow + tcol) % 2 === 0 ? "whiteSquare" : "blackSquare";
|
|
}
|
|
return true;
|
|
}
|
|
|
|
var undoStackMax = 1000;
|
|
var undoStackGame = new Array(undoStackMax);
|
|
var undoStackVar = new Array(undoStackMax);
|
|
var undoStackPly = new Array(undoStackMax);
|
|
var undoStackStart = 0;
|
|
var undoStackCurrent = 0;
|
|
var undoStackEnd = 0;
|
|
var undoRedoInProgress = false;
|
|
|
|
function undoStackReset() {
|
|
undoStackGame = new Array(undoStackMax);
|
|
undoStackVar = new Array(undoStackMax);
|
|
undoStackPly = new Array(undoStackMax);
|
|
undoStackStart = undoStackCurrent = undoStackEnd = 0;
|
|
}
|
|
|
|
function undoStackStore() {
|
|
if (undoRedoInProgress) {
|
|
return false;
|
|
}
|
|
if ((undoStackStart === undoStackCurrent) || (currentGame !== undoStackGame[undoStackCurrent]) || (CurrentVar !== undoStackVar[undoStackCurrent]) || (CurrentPly !== undoStackPly[undoStackCurrent])) {
|
|
undoStackCurrent = (undoStackCurrent + 1) % undoStackMax;
|
|
undoStackGame[undoStackCurrent] = currentGame;
|
|
undoStackVar[undoStackCurrent] = CurrentVar;
|
|
undoStackPly[undoStackCurrent] = CurrentPly;
|
|
undoStackEnd = undoStackCurrent;
|
|
if (undoStackStart === undoStackCurrent) {
|
|
undoStackStart = (undoStackStart + 1) % undoStackMax;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function undoStackUndo() {
|
|
if ((undoStackCurrent - 1 + undoStackMax) % undoStackMax === undoStackStart) {
|
|
return false;
|
|
}
|
|
undoRedoInProgress = true;
|
|
undoStackCurrent = (undoStackCurrent - 1 + undoStackMax) % undoStackMax;
|
|
if (undoStackGame[undoStackCurrent] !== currentGame) {
|
|
Init(undoStackGame[undoStackCurrent]);
|
|
}
|
|
GoToMove(undoStackPly[undoStackCurrent], undoStackVar[undoStackCurrent]);
|
|
undoRedoInProgress = false;
|
|
return true;
|
|
}
|
|
|
|
function undoStackRedo() {
|
|
if (undoStackCurrent === undoStackEnd) {
|
|
return false;
|
|
}
|
|
undoRedoInProgress = true;
|
|
undoStackCurrent = (undoStackCurrent + 1) % undoStackMax;
|
|
if (undoStackGame[undoStackCurrent] !== currentGame) {
|
|
Init(undoStackGame[undoStackCurrent]);
|
|
}
|
|
GoToMove(undoStackPly[undoStackCurrent], undoStackVar[undoStackCurrent]);
|
|
undoRedoInProgress = false;
|
|
return true;
|
|
}
|
|
|
|
|
|
function fixCommonPgnMistakes(text) {
|
|
text = text.replace(/[\u00A0\u180E\u2000-\u200A\u202F\u205F\u3000]/g, " "); // some spaces to plain space
|
|
text = text.replace(/\u00BD/g, "1/2"); // "half fraction" to "1/2"
|
|
text = text.replace(/[\u2010-\u2015]/g, "-"); // "hyphens" to "-"
|
|
text = text.replace(/\u2024/g, "."); // "one dot leader" to "."
|
|
text = text.replace(/[\u2025-\u2026]/g, "..."); // "two dot leader" and "ellipsis" to "..."
|
|
text = text.replace(/\\"/g, "'"); // fix [Opening "Queen\"s gambit"]
|
|
return text;
|
|
}
|
|
|
|
function fullPgnGame(gameNum) {
|
|
var res = pgnHeader[gameNum] ? pgnHeader[gameNum].replace(/^[^[]*/g, "") : "";
|
|
res = res.replace(/\[\s*(\w+)\s*"([^"]*)"\s*\][^[]*/g, '[$1 "$2"]\n');
|
|
res += "\n";
|
|
res += pgnGame[gameNum] ? pgnGame[gameNum].replace(/(^[\s]*|[\s]*$)/g, "") : "";
|
|
return res;
|
|
}
|
|
|
|
function pgnGameFromPgnText(pgnText) {
|
|
|
|
var newNumGames, headMatch, prevHead, newHead, startNew, afterNew, lastOpen, checkedGame, validHead;
|
|
|
|
pgnText = simpleHtmlentities(fixCommonPgnMistakes(pgnText));
|
|
|
|
// PGN standard: ignore lines starting with %
|
|
pgnText = pgnText.replace(/(^|\n)%.*(\n|$)/g, "\n");
|
|
|
|
newNumGames = 0;
|
|
checkedGame = "";
|
|
while (headMatch = pgnHeaderBlockRegExp.exec(pgnText)) {
|
|
newHead = headMatch[0];
|
|
startNew = pgnText.indexOf(newHead);
|
|
afterNew = startNew + newHead.length;
|
|
if (prevHead) {
|
|
checkedGame += pgnText.slice(0, startNew);
|
|
validHead = ((lastOpen = checkedGame.lastIndexOf("{")) < 0) || (checkedGame.lastIndexOf("}")) > lastOpen;
|
|
if (validHead) {
|
|
pgnHeader[newNumGames] = prevHead;
|
|
pgnGame[newNumGames++] = checkedGame;
|
|
checkedGame = "";
|
|
} else {
|
|
checkedGame += newHead;
|
|
}
|
|
} else {
|
|
validHead = true;
|
|
}
|
|
if (validHead) {
|
|
prevHead = newHead;
|
|
}
|
|
pgnText = pgnText.slice(afterNew);
|
|
}
|
|
if (prevHead) {
|
|
pgnHeader[newNumGames] = prevHead;
|
|
checkedGame += pgnText;
|
|
pgnGame[newNumGames++] = checkedGame;
|
|
}
|
|
|
|
if (newNumGames === 0) {
|
|
return false;
|
|
}
|
|
numberOfGames = newNumGames;
|
|
return true;
|
|
}
|
|
|
|
|
|
function pgnGameFromHttpRequest(httpResponseData) {
|
|
|
|
// process here any special file types, for instance zipfiles:
|
|
// if (pgnUrl && pgnUrl.replace(/[?#].*/, "").match(/\.zip$/i)) { return pgnGameFromPgnText(unzipPgnFiles(httpResponseData)); }
|
|
// remember to fix function loadPgnFromPgnUrl() for binary data
|
|
|
|
return pgnGameFromPgnText(httpResponseData);
|
|
}
|
|
|
|
var http_request_last_processed_id = 0;
|
|
|
|
function updatePgnFromHttpRequest(this_http_request, this_http_request_id) {
|
|
var res = LOAD_PGN_FAIL;
|
|
|
|
if (this_http_request.readyState != 4) {
|
|
return;
|
|
}
|
|
|
|
if (this_http_request_id < http_request_last_processed_id) {
|
|
return;
|
|
} else {
|
|
http_request_last_processed_id = this_http_request_id;
|
|
}
|
|
|
|
// patch: enable loading local PGN files on some browsers by adding: || (this_http_request.status === 0)
|
|
if ((this_http_request.status == 200) || (this_http_request.status == 304)) {
|
|
|
|
if (this_http_request.status == 304) {
|
|
if (LiveBroadcastDelay > 0) {
|
|
res = LOAD_PGN_UNMODIFIED;
|
|
} else {
|
|
myAlert('error: unmodified PGN URL when not in live mode');
|
|
}
|
|
} else if (!this_http_request.responseText) {
|
|
myAlert('error: no data received from PGN URL\n' + pgnUrl, true);
|
|
} else if (!pgnGameFromHttpRequest(this_http_request.responseText)) {
|
|
myAlert('error: no games found at PGN URL\n' + pgnUrl, true);
|
|
} else {
|
|
if (LiveBroadcastDelay > 0) {
|
|
LiveBroadcastLastReceivedLocal = (new Date()).toLocaleString();
|
|
if (LiveBroadcastLastModifiedHeader = this_http_request.getResponseHeader("Last-Modified")) {
|
|
LiveBroadcastLastModified = new Date(LiveBroadcastLastModifiedHeader);
|
|
} else {
|
|
LiveBroadcastLastModified_Reset();
|
|
}
|
|
}
|
|
res = LOAD_PGN_OK;
|
|
}
|
|
|
|
} else {
|
|
myAlert('error: failed reading PGN URL\n' + pgnUrl, true);
|
|
}
|
|
|
|
if (LiveBroadcastDemo && (res == LOAD_PGN_UNMODIFIED)) {
|
|
res = LOAD_PGN_OK;
|
|
}
|
|
|
|
loadPgnCheckingLiveStatus(res);
|
|
}
|
|
|
|
var LOAD_PGN_FAIL = 0;
|
|
var LOAD_PGN_OK = 1;
|
|
var LOAD_PGN_UNMODIFIED = 2;
|
|
|
|
function loadPgnCheckingLiveStatus(res) {
|
|
|
|
switch (res) {
|
|
|
|
case LOAD_PGN_OK:
|
|
if (LiveBroadcastDelay > 0) {
|
|
firstStart = true;
|
|
var oldParseLastMoveError = ParseLastMoveError;
|
|
if (!LiveBroadcastStarted) {
|
|
LiveBroadcastStarted = true;
|
|
} else {
|
|
var oldWhite = gameWhite[currentGame];
|
|
var oldBlack = gameBlack[currentGame];
|
|
var oldEvent = gameEvent[currentGame];
|
|
var oldRound = gameRound[currentGame];
|
|
var oldSite = gameSite[currentGame];
|
|
var oldDate = gameDate[currentGame];
|
|
|
|
initialGame = currentGame + 1;
|
|
|
|
LiveBroadcastOldCurrentVar = CurrentVar;
|
|
LiveBroadcastOldCurrentPly = CurrentPly;
|
|
LiveBroadcastOldCurrentPlyLast = (CurrentVar === 0 && CurrentPly === StartPlyVar[0] + PlyNumberVar[0]);
|
|
|
|
var oldAutoplay = isAutoPlayOn;
|
|
if (isAutoPlayOn) {
|
|
SetAutoPlay(false);
|
|
}
|
|
|
|
LoadGameHeaders();
|
|
LiveBroadcastFoundOldGame = false;
|
|
for (var ii = 0; ii < numberOfGames; ii++) {
|
|
LiveBroadcastFoundOldGame = (gameWhite[ii] == oldWhite) && (gameBlack[ii] == oldBlack) && (gameEvent[ii] == oldEvent) && (gameRound[ii] == oldRound) && (gameSite[ii] == oldSite); // && (gameDate[ii] ==oldDate );
|
|
if (LiveBroadcastFoundOldGame) {
|
|
break;
|
|
}
|
|
}
|
|
if (LiveBroadcastFoundOldGame) {
|
|
initialGame = ii + 1;
|
|
}
|
|
|
|
if (LiveBroadcastFoundOldGame) {
|
|
var oldInitialVariation = initialVariation;
|
|
var oldInitialHalfmove = initialHalfmove;
|
|
initialVariation = CurrentVar;
|
|
if (LiveBroadcastSteppingMode) {
|
|
initialHalfmove = (LiveBroadcastOldCurrentPlyLast || oldParseLastMoveError) ? LiveBroadcastOldCurrentPly + 1 : LiveBroadcastOldCurrentPly;
|
|
} else {
|
|
initialHalfmove = (LiveBroadcastOldCurrentPlyLast || oldParseLastMoveError) ? "end" : LiveBroadcastOldCurrentPly;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
undoStackReset();
|
|
Init();
|
|
|
|
if (LiveBroadcastDelay > 0) {
|
|
if (LiveBroadcastFoundOldGame) {
|
|
initialHalfmove = oldInitialHalfmove;
|
|
initialVariation = oldInitialVariation;
|
|
}
|
|
checkLiveBroadcastStatus();
|
|
}
|
|
|
|
customFunctionOnPgnTextLoad();
|
|
|
|
if (LiveBroadcastDelay > 0) {
|
|
if (LiveBroadcastFoundOldGame) {
|
|
if (LiveBroadcastSteppingMode) {
|
|
if (oldAutoplay || LiveBroadcastOldCurrentPlyLast || oldParseLastMoveError) {
|
|
SetAutoPlay(true);
|
|
}
|
|
} else {
|
|
if (oldAutoplay) {
|
|
SetAutoPlay(true);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
|
|
case LOAD_PGN_UNMODIFIED:
|
|
if (LiveBroadcastDelay > 0) {
|
|
checkLiveBroadcastStatus();
|
|
}
|
|
break;
|
|
|
|
case LOAD_PGN_FAIL:
|
|
default:
|
|
if (LiveBroadcastDelay === 0) {
|
|
pgnGameFromPgnText(alertPgn);
|
|
undoStackReset();
|
|
Init();
|
|
customFunctionOnPgnTextLoad();
|
|
} else { // live broadcast: wait for live show start
|
|
if (!LiveBroadcastStarted) {
|
|
pgnGameFromPgnText(LiveBroadcastPlaceholderPgn);
|
|
firstStart = true;
|
|
undoStackReset();
|
|
Init();
|
|
checkLiveBroadcastStatus();
|
|
customFunctionOnPgnTextLoad();
|
|
} else {
|
|
checkLiveBroadcastStatus();
|
|
}
|
|
}
|
|
break;
|
|
|
|
}
|
|
|
|
if (LiveBroadcastDelay > 0) {
|
|
restartLiveBroadcastTimeout();
|
|
}
|
|
}
|
|
|
|
var http_request_last_id = 0;
|
|
|
|
function loadPgnFromPgnUrl(pgnUrl) {
|
|
|
|
LiveBroadcastLastRefreshedLocal = (new Date()).toLocaleString();
|
|
|
|
try {
|
|
var http_request = new XMLHttpRequest();
|
|
if (http_request.overrideMimeType) {
|
|
// patch: pgn encoding: amend the following line to match the expected encoding of the PGN file if charachters beyond the basic 128 ascii set are not displayed correctly
|
|
http_request.overrideMimeType("text/plain"); // this assumes the PGN file is encoded as unicode UTF-8
|
|
// http_request.overrideMimeType("text/plain; charset=ISO-8859-15"); // this has been reported to work with some files created by the DGT live boards software
|
|
// http_request.overrideMimeType("text/plain; charset=x-user-defined"); // this works with a binary file, such as a zipfile, but would need further processing
|
|
}
|
|
} catch (e) {
|
|
myAlert('error: failed creating XMLHttpRequest for PGN URL\n' + pgnUrl, true);
|
|
loadPgnCheckingLiveStatus(LOAD_PGN_FAIL);
|
|
return false;
|
|
}
|
|
|
|
var http_request_id = http_request_last_id++;
|
|
http_request.onreadystatechange = function () {
|
|
updatePgnFromHttpRequest(http_request, http_request_id);
|
|
};
|
|
|
|
try {
|
|
var randomizer = "";
|
|
// anti-caching #1
|
|
if ((LiveBroadcastDelay > 0) && (pgnUrl.indexOf("?") == -1) && (pgnUrl.indexOf("#") == -1)) {
|
|
randomizer = "?noCache=" + (0x1000000000 + Math.floor((Math.random() * 0xF000000000))).toString(16).toUpperCase();
|
|
}
|
|
http_request.open("GET", pgnUrl + randomizer);
|
|
// anti-caching #2
|
|
if (LiveBroadcastDelay > 0) {
|
|
http_request.setRequestHeader("If-Modified-Since", LiveBroadcastLastModifiedHeader);
|
|
}
|
|
http_request.send(null);
|
|
} catch (e) {
|
|
myAlert('error: failed sending XMLHttpRequest for PGN URL\n' + pgnUrl, true);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function SetPgnUrl(url) {
|
|
pgnUrl = url;
|
|
}
|
|
|
|
|
|
function LiveBroadcastLastModified_Reset() {
|
|
LiveBroadcastLastModified = new Date(0);
|
|
LiveBroadcastLastModifiedHeader = LiveBroadcastLastModified.toUTCString();
|
|
}
|
|
|
|
function LiveBroadcastLastReceivedLocal_Reset() {
|
|
LiveBroadcastLastReceivedLocal = 'unavailable';
|
|
}
|
|
|
|
function LiveBroadcastLastModified_ServerTime() {
|
|
return LiveBroadcastLastModified.getTime() === 0 ? 'unavailable' : LiveBroadcastLastModifiedHeader;
|
|
}
|
|
|
|
function pauseLiveBroadcast() {
|
|
if ((LiveBroadcastDelay === 0) || (LiveBroadcastPaused)) {
|
|
return;
|
|
}
|
|
LiveBroadcastPaused = true;
|
|
clearTimeout(LiveBroadcastInterval);
|
|
LiveBroadcastInterval = null;
|
|
LiveBroadcastTicker--;
|
|
checkLiveBroadcastStatus();
|
|
LiveBroadcastTicker++;
|
|
}
|
|
|
|
function restartLiveBroadcast() {
|
|
if (LiveBroadcastDelay === 0) {
|
|
return;
|
|
}
|
|
LiveBroadcastPaused = false;
|
|
refreshPgnSource();
|
|
}
|
|
|
|
function checkLiveBroadcastStatus() {
|
|
if (LiveBroadcastDelay === 0) {
|
|
return;
|
|
}
|
|
|
|
var theTitle, theHTML, theObj, ii;
|
|
|
|
// broadcast started yet?
|
|
if (LiveBroadcastStarted === false || typeof (pgnHeader) == "undefined" || (numberOfGames == 1 && gameEvent[0] == LiveBroadcastPlaceholderEvent)) {
|
|
// no
|
|
LiveBroadcastEnded = false;
|
|
LiveBroadcastGamesRunning = 0;
|
|
theTitle = "live broadcast yet to start";
|
|
} else {
|
|
// yes
|
|
var lbgr = 0, lbga = 0;
|
|
for (ii = 0; ii < numberOfGames; ii++) {
|
|
if (gameResult[ii].indexOf('*') >= 0) {
|
|
lbga++;
|
|
if (!pgnGame[ii].match(/^\s*\*?\s*$/)) {
|
|
lbgr++;
|
|
}
|
|
}
|
|
}
|
|
LiveBroadcastEnded = ((lbga === 0) && (!LiveBroadcastEndlessMode));
|
|
LiveBroadcastGamesRunning = lbgr;
|
|
theTitle = LiveBroadcastEnded ? "live broadcast ended" : LiveBroadcastPaused ? "live broadcast paused" : lbgr + " live game" + (lbgr == 1 ? "" : "s") + " out of " + numberOfGames;
|
|
}
|
|
theHTML = LiveBroadcastEnded ? "#" : LiveBroadcastPaused ? "+" : "=";
|
|
theHTML = (LiveBroadcastTicker % 4 === 3 ? theHTML : " ") + (LiveBroadcastTicker % 2 === 0 ? theHTML : " ") + (LiveBroadcastTicker % 4 === 1 ? theHTML : " ");
|
|
theHTML = LiveBroadcastGamesRunning + "<span style='display:inline-block; min-width:3em; text-align:center;'>" + theHTML + "</span>" + numberOfGames;
|
|
theHTML = "<span onclick='" + (LiveBroadcastPaused ? "restartLiveBroadcast();" : "refreshPgnSource();") + " this.blur();'>" + theHTML + "</span>";
|
|
|
|
if (theObj = document.getElementById("GameLiveStatus")) {
|
|
theObj.innerHTML = theHTML;
|
|
theObj.title = theTitle;
|
|
}
|
|
|
|
if (theObj = document.getElementById("GameLiveLastRefreshed")) {
|
|
theObj.innerHTML = LiveBroadcastLastRefreshedLocal;
|
|
}
|
|
if (theObj = document.getElementById("GameLiveLastReceived")) {
|
|
theObj.innerHTML = LiveBroadcastLastReceivedLocal;
|
|
}
|
|
if (theObj = document.getElementById("GameLiveLastModifiedServer")) {
|
|
theObj.innerHTML = LiveBroadcastLastModified_ServerTime();
|
|
}
|
|
|
|
customFunctionOnCheckLiveBroadcastStatus();
|
|
}
|
|
|
|
function restartLiveBroadcastTimeout() {
|
|
if (LiveBroadcastDelay === 0) {
|
|
return;
|
|
}
|
|
if (LiveBroadcastInterval) {
|
|
clearTimeout(LiveBroadcastInterval);
|
|
LiveBroadcastInterval = null;
|
|
}
|
|
if ((!LiveBroadcastEnded) && (!LiveBroadcastPaused)) {
|
|
LiveBroadcastInterval = setTimeout("refreshPgnSource()", LiveBroadcastDelay * 60000);
|
|
}
|
|
LiveBroadcastTicker++;
|
|
}
|
|
|
|
var LiveBroadcastFoundOldGame = false;
|
|
var LiveBroadcastOldCurrentVar;
|
|
var LiveBroadcastOldCurrentPly;
|
|
var LiveBroadcastOldCurrentPlyLast = false;
|
|
|
|
function refreshPgnSource() {
|
|
if (LiveBroadcastDelay === 0) {
|
|
return;
|
|
}
|
|
if (LiveBroadcastInterval) {
|
|
clearTimeout(LiveBroadcastInterval);
|
|
LiveBroadcastInterval = null;
|
|
}
|
|
if (LiveBroadcastDemo) {
|
|
var newPly, addedPly = 0;
|
|
for (var ii = 0; ii < numberOfGames; ii++) {
|
|
// 5% 15% 40%
|
|
newPly = [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1][Math.floor(20 * Math.random())] || 0;
|
|
if (gameDemoMaxPly[ii] <= gameDemoLength[ii]) {
|
|
gameDemoMaxPly[ii] += newPly;
|
|
addedPly += newPly;
|
|
}
|
|
}
|
|
if (addedPly > 0) {
|
|
LiveBroadcastLastReceivedLocal = (new Date()).toLocaleString();
|
|
}
|
|
}
|
|
|
|
if (pgnUrl) {
|
|
loadPgnFromPgnUrl(pgnUrl);
|
|
} else if (document.getElementById("pgnText")) {
|
|
loadPgnFromTextarea("pgnText");
|
|
} else {
|
|
pgnGameFromPgnText(alertPgn);
|
|
undoStackReset();
|
|
Init();
|
|
customFunctionOnPgnTextLoad();
|
|
myAlert('error: missing PGN URL location and pgnText object in the HTML file', true);
|
|
}
|
|
}
|
|
|
|
function loadPgnFromTextarea(textareaId) {
|
|
var res = LOAD_PGN_FAIL, text, theObj;
|
|
|
|
LiveBroadcastLastRefreshedLocal = (new Date()).toLocaleString();
|
|
|
|
if (!(theObj = document.getElementById(textareaId))) {
|
|
myAlert('error: missing ' + textareaId + ' textarea object in the HTML file', true);
|
|
} else {
|
|
if (document.getElementById(textareaId).tagName.toLowerCase() == "textarea") {
|
|
text = document.getElementById(textareaId).value;
|
|
} else { // compatibility with pgn4web up to 1.77: <span> used for pgnText
|
|
text = document.getElementById(textareaId).innerHTML;
|
|
// fixes browser issue removing \n from innerHTML
|
|
if (text.indexOf('\n') < 0) {
|
|
text = text.replace(/((\[[^\[\]]*\]\s*)+)/g, "\n$1\n");
|
|
}
|
|
// fixes browser issue replacing quotes with "
|
|
if (text.indexOf('"') < 0) {
|
|
text = text.replace(/(")/g, '"');
|
|
}
|
|
}
|
|
|
|
// no header: add emptyPgnHeader
|
|
if (pgnHeaderTagRegExp.test(text) === false) {
|
|
text = emptyPgnHeader + "\n" + text;
|
|
}
|
|
|
|
if (pgnGameFromPgnText(text)) {
|
|
res = LOAD_PGN_OK;
|
|
LiveBroadcastLastReceivedLocal = (new Date()).toLocaleString();
|
|
} else {
|
|
myAlert('error: no games found in ' + textareaId + ' object in the HTML file');
|
|
}
|
|
}
|
|
|
|
loadPgnCheckingLiveStatus(res);
|
|
}
|
|
|
|
function createBoard() {
|
|
if (pgnUrl) {
|
|
loadPgnFromPgnUrl(pgnUrl);
|
|
} else if (document.getElementById("pgnText")) {
|
|
loadPgnFromTextarea("pgnText");
|
|
} else {
|
|
pgnGameFromPgnText(alertPgn);
|
|
undoStackReset();
|
|
Init();
|
|
customFunctionOnPgnTextLoad();
|
|
myAlert('error: missing PGN URL location or pgnText in the HTML file', true);
|
|
}
|
|
}
|
|
|
|
function setCurrentGameFromInitialGame() {
|
|
switch (initialGame) {
|
|
case "first":
|
|
currentGame = 0;
|
|
break;
|
|
case "last":
|
|
currentGame = numberOfGames - 1;
|
|
break;
|
|
case "random":
|
|
currentGame = Math.floor(Math.random() * numberOfGames);
|
|
break;
|
|
default:
|
|
if (isNaN(parseInt(initialGame, 10))) {
|
|
currentGame = gameNumberSearchPgn(initialGame, false, true);
|
|
if (!currentGame) {
|
|
currentGame = 0;
|
|
}
|
|
} else {
|
|
initialGame = parseInt(initialGame, 10);
|
|
initialGame = initialGame < 0 ? -Math.floor(-initialGame) : Math.floor(initialGame);
|
|
if (initialGame < -numberOfGames) {
|
|
currentGame = 0;
|
|
} else if (initialGame < 0) {
|
|
currentGame = numberOfGames + initialGame;
|
|
} else if (initialGame === 0) {
|
|
currentGame = Math.floor(Math.random() * numberOfGames);
|
|
} else if (initialGame <= numberOfGames) {
|
|
currentGame = (initialGame - 1);
|
|
} else {
|
|
currentGame = numberOfGames - 1;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
function GoToInitialHalfmove() {
|
|
var iv, ih;
|
|
if (initialVariation < 0) {
|
|
iv = Math.max(numberOfVars + initialVariations, 0);
|
|
} else {
|
|
iv = Math.min(initialVariation, numberOfVars - 1);
|
|
}
|
|
|
|
switch (initialHalfmove) {
|
|
case "start":
|
|
GoToMove((StartPlyVar[iv] + (iv ? 1 : 0)), iv);
|
|
break;
|
|
case "end":
|
|
GoToMove(StartPlyVar[iv] + PlyNumberVar[iv], iv);
|
|
break;
|
|
case "random":
|
|
GoToMove((StartPlyVar[iv] + (iv ? 1 : 0)) + Math.floor(Math.random() * (StartPlyVar[iv] + PlyNumberVar[iv])), iv);
|
|
break;
|
|
case "comment":
|
|
case "variation":
|
|
GoToMove((StartPlyVar[iv] + (iv ? 1 : 0)), iv);
|
|
MoveToNextComment(initialHalfmove == "variation");
|
|
break;
|
|
default:
|
|
if (isNaN(initialHalfmove = parseInt(initialHalfmove, 10))) {
|
|
initialHalfmove = 0;
|
|
}
|
|
if (initialHalfmove < 0) {
|
|
ih = Math.max(StartPlyVar[iv] + PlyNumberVar[iv] + 1 + initialHalfmove, StartPly);
|
|
} else {
|
|
ih = Math.min(initialHalfmove, StartPlyVar[iv] + PlyNumberVar[iv]);
|
|
}
|
|
GoToMove(ih, iv);
|
|
break;
|
|
}
|
|
}
|
|
|
|
function Init(nextGame) {
|
|
|
|
if (nextGame !== undefined) {
|
|
if ((!isNaN(nextGame)) && (nextGame >= 0) && (nextGame < numberOfGames)) {
|
|
currentGame = parseInt(nextGame, 10);
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (isAutoPlayOn) {
|
|
SetAutoPlay(false);
|
|
}
|
|
|
|
InitImages();
|
|
if (firstStart) {
|
|
LoadGameHeaders();
|
|
setCurrentGameFromInitialGame();
|
|
}
|
|
|
|
if ((gameSetUp[currentGame] !== undefined) && (gameSetUp[currentGame] != "1")) {
|
|
InitFEN();
|
|
} else {
|
|
InitFEN(gameFEN[currentGame]);
|
|
}
|
|
|
|
OpenGame(currentGame);
|
|
|
|
CurrentPly = StartPly;
|
|
if (firstStart || alwaysInitialHalfmove) {
|
|
GoToInitialHalfmove();
|
|
setTimeout("autoScrollToCurrentMoveIfEnabled();", Math.min(666, 0.9 * Delay));
|
|
} else {
|
|
synchMoves();
|
|
RefreshBoard();
|
|
HighlightLastMove();
|
|
autoScrollToCurrentMoveIfEnabled();
|
|
// customFunctionOnMove here for consistency: null move starting new game
|
|
customFunctionOnMove();
|
|
if (typeof (engineWinOnMove) == "function") {
|
|
engineWinOnMove();
|
|
}
|
|
}
|
|
|
|
if ((firstStart) && (autostartAutoplay)) {
|
|
SetAutoPlay(true);
|
|
}
|
|
|
|
customFunctionOnPgnGameLoad();
|
|
|
|
initialVariation = 0;
|
|
firstStart = false;
|
|
}
|
|
|
|
function myAlertFEN(FenString, text) {
|
|
myAlert("error: invalid FEN in game " + (currentGame + 1) + ": " + text + "\n" + FenString, true);
|
|
}
|
|
|
|
function InitFEN(startingFEN) {
|
|
var ii, jj, cc, color, castlingRookCol, fullMoveNumber;
|
|
|
|
var FenString = typeof (startingFEN) != "string" ? FenStringStart : startingFEN.replace(/\\/g, "/").replace(/[^a-zA-Z0-9\s\/-]/g, " ").replace(/(^\s*|\s*$)/g, "").replace(/\s+/g, " ");
|
|
|
|
for (ii = 0; ii < 8; ++ii) {
|
|
for (jj = 0; jj < 8; ++jj) {
|
|
Board[ii][jj] = 0;
|
|
}
|
|
}
|
|
|
|
StartPly = 0;
|
|
MoveCount = StartPly;
|
|
MoveColor = StartPly % 2;
|
|
|
|
var newEnPassant = false;
|
|
var newEnPassantCol;
|
|
CastlingLong = [0, 0];
|
|
CastlingShort = [7, 7];
|
|
InitialHalfMoveClock = 0;
|
|
|
|
HistVar[StartPly] = 0;
|
|
HistNull[StartPly] = 0;
|
|
|
|
if (FenString == FenStringStart) {
|
|
for (color = 0; color < 2; color++) {
|
|
// K Q N B R p
|
|
PieceType[color] = [1, 2, 5, 5, 4, 4, 3, 3, 6, 6, 6, 6, 6, 6, 6, 6];
|
|
PieceCol[color] = [4, 3, 1, 6, 2, 5, 0, 7, 0, 1, 2, 3, 4, 5, 6, 7];
|
|
PieceMoveCounter[color] = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
|
|
PieceRow[color] = color ? [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6] :
|
|
[0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1];
|
|
for (ii = 0; ii < 16; ii++) {
|
|
var col = PieceCol[color][ii];
|
|
var row = PieceRow[color][ii];
|
|
Board[col][row] = (1 - 2 * color) * PieceType[color][ii];
|
|
}
|
|
}
|
|
} else {
|
|
var kk, ll, nn, mm;
|
|
for (ii = 0; ii < 2; ii++) {
|
|
for (jj = 0; jj < 16; jj++) {
|
|
PieceType[ii][jj] = -1;
|
|
PieceCol[ii][jj] = 0;
|
|
PieceRow[ii][jj] = 0;
|
|
PieceMoveCounter[ii][jj] = 0;
|
|
}
|
|
}
|
|
|
|
ii = 0;
|
|
jj = 7;
|
|
ll = 0;
|
|
nn = 1;
|
|
mm = 1;
|
|
cc = FenString.charAt(ll++);
|
|
while (cc != " ") {
|
|
if (cc == "/") {
|
|
if (ii != 8) {
|
|
myAlertFEN(FenString, "piece placement: each row needs 8 squares");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
ii = 0;
|
|
jj--;
|
|
}
|
|
if (ii == 8) {
|
|
myAlertFEN(FenString, "piece placement: each row needs 8 squares");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
if (!isNaN(cc)) {
|
|
ii += parseInt(cc, 10);
|
|
if ((ii < 0) || (ii > 8)) {
|
|
myAlertFEN(FenString, "piece placement: each row needs 8 squares");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
}
|
|
if (cc === PiecesArr[0].toUpperCase()) {
|
|
if (PieceType[0][0] != -1) {
|
|
myAlertFEN(FenString, "piece placement: more than 1 white king");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
PieceType[0][0] = 1;
|
|
PieceCol[0][0] = ii;
|
|
PieceRow[0][0] = jj;
|
|
ii++;
|
|
} else if (cc === PiecesArr[0].toLowerCase()) {
|
|
if (PieceType[1][0] != -1) {
|
|
myAlertFEN(FenString, "piece placement: more than 1 black king");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
PieceType[1][0] = 1;
|
|
PieceCol[1][0] = ii;
|
|
PieceRow[1][0] = jj;
|
|
ii++;
|
|
}
|
|
for (kk = 1; kk < 6; kk++) {
|
|
if (cc === PiecesArr[kk].toUpperCase()) {
|
|
if (nn == 16) {
|
|
myAlertFEN(FenString, "piece placement: more than 16 white pieces");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
PieceType[0][nn] = kk + 1;
|
|
PieceCol[0][nn] = ii;
|
|
PieceRow[0][nn] = jj;
|
|
nn++;
|
|
ii++;
|
|
} else if (cc === PiecesArr[kk].toLowerCase()) {
|
|
if (mm == 16) {
|
|
myAlertFEN(FenString, "piece placement: more than 16 black pieces");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
PieceType[1][mm] = kk + 1;
|
|
PieceCol[1][mm] = ii;
|
|
PieceRow[1][mm] = jj;
|
|
mm++;
|
|
ii++;
|
|
}
|
|
}
|
|
cc = ll < FenString.length ? FenString.charAt(ll++) : " ";
|
|
}
|
|
if ((ii != 8) || (jj !== 0)) {
|
|
myAlertFEN(FenString, "piece placement: string termination issue");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
if ((PieceType[0][0] == -1) || (PieceType[1][0] == -1)) {
|
|
myAlertFEN(FenString, "missing king");
|
|
InitFEN();
|
|
return;
|
|
}
|
|
if (ll == FenString.length) {
|
|
FenString += " w " + assumedCastleRights() + " - 0 1";
|
|
ll++;
|
|
}
|
|
cc = FenString.charAt(ll++);
|
|
if ((cc == "w") || (cc == "b")) {
|
|
if (cc == "b") {
|
|
StartPly += 1;
|
|
MoveColor = 1;
|
|
}
|
|
} else {
|
|
myAlertFEN(FenString, "invalid active color");
|
|
}
|
|
|
|
// set board
|
|
for (color = 0; color < 2; ++color) {
|
|
for (ii = 0; ii < 16; ii++) {
|
|
if (PieceType[color][ii] != -1) {
|
|
col = PieceCol[color][ii];
|
|
row = PieceRow[color][ii];
|
|
Board[col][row] = (1 - 2 * color) * (PieceType[color][ii]);
|
|
}
|
|
}
|
|
}
|
|
|
|
ll++;
|
|
if (ll >= FenString.length) {
|
|
myAlertFEN(FenString, "missing castling availability");
|
|
FenString += " " + assumedCastleRights() + " - 0 1";
|
|
ll++;
|
|
}
|
|
CastlingLong = [-1, -1];
|
|
CastlingShort = [-1, -1];
|
|
cc = FenString.charAt(ll++);
|
|
while (cc != " ") {
|
|
if (cc === PiecesArr[0].toUpperCase()) {
|
|
for (CastlingShort[0] = 7; CastlingShort[0] > PieceCol[0][0]; CastlingShort[0]--) {
|
|
if (Board[CastlingShort[0]][0] == 3) {
|
|
break;
|
|
}
|
|
}
|
|
if (CastlingShort[0] <= PieceCol[0][0]) {
|
|
myAlertFEN(FenString, "missing castling rook " + cc);
|
|
CastlingShort[0] = -1;
|
|
}
|
|
} else if (cc === PiecesArr[1].toUpperCase()) {
|
|
for (CastlingLong[0] = 0; CastlingLong[0] < PieceCol[0][0]; CastlingLong[0]++) {
|
|
if (Board[CastlingLong[0]][0] == 3) {
|
|
break;
|
|
}
|
|
}
|
|
if (CastlingLong[0] >= PieceCol[0][0]) {
|
|
myAlertFEN(FenString, "missing castling rook " + cc);
|
|
CastlingLong[0] = -1;
|
|
}
|
|
} else if (cc === PiecesArr[0].toLowerCase()) {
|
|
for (CastlingShort[1] = 7; CastlingShort[1] > PieceCol[1][0]; CastlingShort[1]--) {
|
|
if (Board[CastlingShort[1]][7] == -3) {
|
|
break;
|
|
}
|
|
}
|
|
if (CastlingShort[1] <= PieceCol[1][0]) {
|
|
myAlertFEN(FenString, "missing castling rook " + cc);
|
|
CastlingShort[1] = -1;
|
|
}
|
|
} else if (cc === PiecesArr[1].toLowerCase()) {
|
|
for (CastlingLong[1] = 0; CastlingLong[1] < PieceCol[1][0]; CastlingLong[1]++) {
|
|
if (Board[CastlingLong[1]][7] == -3) {
|
|
break;
|
|
}
|
|
}
|
|
if (CastlingLong[1] >= PieceCol[1][0]) {
|
|
myAlertFEN(FenString, "missing castling rook " + cc);
|
|
CastlingLong[1] = -1;
|
|
}
|
|
}
|
|
castlingRookCol = columnsLetters.toUpperCase().indexOf(cc);
|
|
if (castlingRookCol >= 0) {
|
|
color = 0;
|
|
} else {
|
|
castlingRookCol = columnsLetters.toLowerCase().indexOf(cc);
|
|
if (castlingRookCol >= 0) {
|
|
color = 1;
|
|
}
|
|
}
|
|
if (castlingRookCol >= 0) {
|
|
if (Board[castlingRookCol][color * 7] == (1 - 2 * color) * 3) {
|
|
if (castlingRookCol > PieceCol[color][0]) {
|
|
CastlingShort[color] = castlingRookCol;
|
|
}
|
|
if (castlingRookCol < PieceCol[color][0]) {
|
|
CastlingLong[color] = castlingRookCol;
|
|
}
|
|
} else {
|
|
myAlertFEN(FenString, "missing castling rook " + cc);
|
|
}
|
|
}
|
|
cc = ll < FenString.length ? FenString.charAt(ll++) : " ";
|
|
}
|
|
|
|
if (ll >= FenString.length) {
|
|
myAlertFEN(FenString, "missing en passant square");
|
|
FenString += " - 0 1";
|
|
ll++;
|
|
}
|
|
cc = FenString.charAt(ll++);
|
|
while (cc != " ") {
|
|
if ((cc.charCodeAt(0) - 97 >= 0) && (cc.charCodeAt(0) - 97 <= 7)) {
|
|
newEnPassant = true;
|
|
newEnPassantCol = cc.charCodeAt(0) - 97;
|
|
}
|
|
cc = ll < FenString.length ? FenString.charAt(ll++) : " ";
|
|
}
|
|
if (ll >= FenString.length) {
|
|
myAlertFEN(FenString, "missing halfmove clock");
|
|
FenString += " 0 1";
|
|
ll++;
|
|
}
|
|
InitialHalfMoveClock = 0;
|
|
cc = FenString.charAt(ll++);
|
|
while (cc != " ") {
|
|
if (isNaN(cc)) {
|
|
myAlertFEN(FenString, "invalid halfmove clock");
|
|
break;
|
|
}
|
|
InitialHalfMoveClock = InitialHalfMoveClock * 10 + parseInt(cc, 10);
|
|
cc = ll < FenString.length ? FenString.charAt(ll++) : " ";
|
|
}
|
|
if (ll >= FenString.length) {
|
|
myAlertFEN(FenString, "missing fullmove number");
|
|
FenString += " 1";
|
|
ll++;
|
|
}
|
|
|
|
fullMoveNumber = 0;
|
|
cc = FenString.charAt(ll++);
|
|
while (cc != " ") {
|
|
if (isNaN(cc)) {
|
|
myAlertFEN(FenString, "invalid fullmove number");
|
|
fullMoveNumber = 1;
|
|
break;
|
|
}
|
|
fullMoveNumber = fullMoveNumber * 10 + parseInt(cc, 10);
|
|
cc = ll < FenString.length ? FenString.charAt(ll++) : " ";
|
|
}
|
|
if (fullMoveNumber === 0) {
|
|
myAlertFEN(FenString, "invalid fullmove 0 set to 1");
|
|
fullMoveNumber = 1;
|
|
}
|
|
StartPly += 2 * (fullMoveNumber - 1);
|
|
|
|
if (IsCheck(PieceCol[MoveColor ? 0 : 1][0], PieceRow[MoveColor ? 0 : 1][0], MoveColor ? 0 : 1)) {
|
|
myAlertFEN(FenString, (MoveColor ? "Black" : "White") + " to move checking " + (MoveColor ? "white" : "black") + " king");
|
|
}
|
|
|
|
HistEnPassant[StartPly] = newEnPassant;
|
|
HistEnPassantCol[StartPly] = newEnPassantCol;
|
|
HistNull[StartPly] = 0;
|
|
HistVar[StartPly] = 0;
|
|
}
|
|
}
|
|
|
|
// castling rights assuming kings and rooks starting positions as in normal chess
|
|
function assumedCastleRights() {
|
|
var ii, rights = "";
|
|
if ((PieceRow[0][0] === 0) && (PieceCol[0][0] === 4)) {
|
|
for (ii = 0; ii < PieceType[0].length; ii++) {
|
|
if ((PieceType[0][ii] === 3) && (PieceRow[0][ii] === 0) && (PieceCol[0][ii] === 7)) {
|
|
rights += PiecesArr[0].toUpperCase();
|
|
} else if ((PieceType[0][ii] === 3) && (PieceRow[0][ii] === 0) && (PieceCol[0][ii] === 0)) {
|
|
rights += PiecesArr[1].toUpperCase();
|
|
}
|
|
}
|
|
}
|
|
if ((PieceRow[1][0] === 7) && (PieceCol[1][0] === 4)) {
|
|
for (ii = 0; ii < PieceType[1].length; ii++) {
|
|
if ((PieceType[1][ii] === 3) && (PieceRow[1][ii] === 7) && (PieceCol[1][ii] === 7)) {
|
|
rights += PiecesArr[0].toLowerCase();
|
|
} else if ((PieceType[1][ii] === 3) && (PieceRow[1][ii] === 7) && (PieceCol[1][ii] === 0)) {
|
|
rights += PiecesArr[1].toLowerCase();
|
|
}
|
|
}
|
|
}
|
|
return rights || "-";
|
|
}
|
|
|
|
|
|
function SetImageType(extension) {
|
|
imageType = extension;
|
|
}
|
|
|
|
function InitImages() {
|
|
if (ImagePathOld === ImagePath) {
|
|
return;
|
|
}
|
|
|
|
if ((ImagePath.length > 0) && (ImagePath[ImagePath.length - 1] != '/')) {
|
|
ImagePath += '/';
|
|
}
|
|
|
|
ClearImg = new Image();
|
|
ClearImg.src = ImagePath + 'clear.' + imageType;
|
|
|
|
var ColorName = new Array("w", "b");
|
|
var PiecePrefix = new Array("k", "q", "r", "b", "n", "p");
|
|
for (var c = 0; c < 2; ++c) {
|
|
for (var p = 1; p < 7; p++) {
|
|
PieceImg[c][p] = new Image();
|
|
PieceImg[c][p].src = ImagePath + ColorName[c] + PiecePrefix[p - 1] + '.' + imageType;
|
|
}
|
|
}
|
|
ImagePathOld = ImagePath;
|
|
}
|
|
|
|
|
|
function IsCheck(col, row, color) {
|
|
var ii, jj;
|
|
var sign = 2 * color - 1; // white or black
|
|
|
|
// other king giving check?
|
|
if ((Math.abs(PieceCol[1 - color][0] - col) <= 1) && (Math.abs(PieceRow[1 - color][0] - row) <= 1)) {
|
|
return true;
|
|
}
|
|
|
|
// knight?
|
|
for (ii = -2; ii <= 2; ii += 4) {
|
|
for (jj = -1; jj <= 1; jj += 2) {
|
|
if (SquareOnBoard(col + ii, row + jj)) {
|
|
if (Board[col + ii][row + jj] == sign * 5) {
|
|
return true;
|
|
}
|
|
}
|
|
if (SquareOnBoard(col + jj, row + ii)) {
|
|
if (Board[col + jj][row + ii] == sign * 5) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// pawn?
|
|
for (ii = -1; ii <= 1; ii += 2) {
|
|
if (SquareOnBoard(col + ii, row - sign)) {
|
|
if (Board[col + ii][row - sign] == sign * 6) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// queens, rooks, bishops?
|
|
for (ii = -1; ii <= 1; ++ii) {
|
|
for (jj = -1; jj <= 1; ++jj) {
|
|
if ((ii !== 0) || (jj !== 0)) {
|
|
var checkCol = col + ii;
|
|
var checkRow = row + jj;
|
|
var thisPiece = 0;
|
|
|
|
while (SquareOnBoard(checkCol, checkRow) && (thisPiece === 0)) {
|
|
thisPiece = Board[checkCol][checkRow];
|
|
if (thisPiece === 0) {
|
|
checkCol += ii;
|
|
checkRow += jj;
|
|
} else {
|
|
if (thisPiece == sign * 2) {
|
|
return true;
|
|
}
|
|
if ((thisPiece == sign * 3) && ((ii === 0) || (jj === 0))) {
|
|
return true;
|
|
}
|
|
if ((thisPiece == sign * 4) && ((ii !== 0) && (jj !== 0))) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
function fixRegExp(exp) {
|
|
return exp.replace(/([\[\]\(\)\{\}\.\*\+\^\$\|\?\\])/g, "\\$1");
|
|
}
|
|
|
|
function LoadGameHeaders() {
|
|
var ii;
|
|
var parse;
|
|
|
|
gameEvent.length = gameSite.length = gameRound.length = gameDate.length = 0;
|
|
gameWhite.length = gameBlack.length = gameResult.length = 0;
|
|
gameSetUp.length = gameFEN.length = 0;
|
|
gameInitialWhiteClock.length = gameInitialBlackClock.length = 0;
|
|
gameVariant.length = 0;
|
|
|
|
pgnHeaderTagRegExpGlobal.lastIndex = 0; // resets global regular expression
|
|
for (ii = 0; ii < numberOfGames; ++ii) {
|
|
var ss = pgnHeader[ii];
|
|
gameEvent[ii] = gameSite[ii] = gameRound[ii] = gameDate[ii] = "";
|
|
gameWhite[ii] = gameBlack[ii] = gameResult[ii] = "";
|
|
gameInitialWhiteClock[ii] = gameInitialBlackClock[ii] = "";
|
|
gameVariant[ii] = "";
|
|
while (parse = pgnHeaderTagRegExpGlobal.exec(ss)) {
|
|
switch (parse[1]) {
|
|
case 'Event':
|
|
gameEvent[ii] = parse[2];
|
|
break;
|
|
case 'Site':
|
|
gameSite[ii] = parse[2];
|
|
break;
|
|
case 'Round':
|
|
gameRound[ii] = parse[2];
|
|
break;
|
|
case 'Date':
|
|
gameDate[ii] = parse[2];
|
|
break;
|
|
case 'White':
|
|
gameWhite[ii] = parse[2];
|
|
break;
|
|
case 'Black':
|
|
gameBlack[ii] = parse[2];
|
|
break;
|
|
case 'Result':
|
|
gameResult[ii] = parse[2];
|
|
break;
|
|
case 'SetUp':
|
|
gameSetUp[ii] = parse[2];
|
|
break;
|
|
case 'FEN':
|
|
gameFEN[ii] = parse[2];
|
|
break;
|
|
case 'WhiteClock':
|
|
gameInitialWhiteClock[ii] = parse[2];
|
|
break;
|
|
case 'BlackClock':
|
|
gameInitialBlackClock[ii] = parse[2];
|
|
break;
|
|
case 'Variant':
|
|
gameVariant[ii] = parse[2];
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if ((LiveBroadcastDemo) && (numberOfGames > 0)) {
|
|
for (ii = 0; ii < numberOfGames; ++ii) {
|
|
if ((gameDemoLength[ii] === undefined) || (gameDemoLength[ii] === 0)) {
|
|
InitFEN(gameFEN[ii]);
|
|
ParsePGNGameString(pgnGame[ii]);
|
|
gameDemoLength[ii] = PlyNumber;
|
|
}
|
|
if (gameDemoMaxPly[ii] === undefined) {
|
|
gameDemoMaxPly[ii] = 0;
|
|
}
|
|
if ((gameDemoMaxPly[ii] <= gameDemoLength[ii]) && (gameDemoLength[ii] > 0)) {
|
|
gameResult[ii] = '*';
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
function MoveBackward(diff, scanOnly) {
|
|
|
|
// CurrentPly counts from 1, starting position 0
|
|
var goFromPly = CurrentPly - 1;
|
|
var goToPly = goFromPly - diff;
|
|
if (goToPly < StartPly) {
|
|
goToPly = StartPly - 1;
|
|
}
|
|
|
|
// reconstruct old position
|
|
for (var thisPly = goFromPly; thisPly > goToPly; --thisPly) {
|
|
CurrentPly--;
|
|
MoveColor = 1 - MoveColor;
|
|
CurrentVar = HistVar[thisPly];
|
|
UndoMove(thisPly);
|
|
}
|
|
|
|
if (scanOnly) {
|
|
return;
|
|
}
|
|
|
|
synchMoves();
|
|
|
|
// old position reconstructed: refresh board
|
|
RefreshBoard();
|
|
HighlightLastMove();
|
|
|
|
autoScrollToCurrentMoveIfEnabled();
|
|
|
|
// autoplay: restart timeout
|
|
if (AutoPlayInterval) {
|
|
clearTimeout(AutoPlayInterval);
|
|
AutoPlayInterval = null;
|
|
}
|
|
if (isAutoPlayOn) {
|
|
if (goToPly >= StartPlyVar[CurrentVar]) {
|
|
AutoPlayInterval = setTimeout("MoveBackward(1)", Delay);
|
|
} else {
|
|
SetAutoPlay(false);
|
|
}
|
|
}
|
|
|
|
customFunctionOnMove();
|
|
if (typeof (engineWinOnMove) == "function") {
|
|
engineWinOnMove();
|
|
}
|
|
}
|
|
|
|
function MoveForward(diff, targetVar, scanOnly) {
|
|
var nextVar, nextVarStartPly, move, text;
|
|
var oldVar = -1;
|
|
|
|
if (typeof (targetVar) == "undefined") {
|
|
targetVar = CurrentVar;
|
|
}
|
|
|
|
// CurrentPly counts from 1, starting position 0
|
|
var goToPly = CurrentPly + parseInt(diff, 10);
|
|
|
|
if (goToPly > StartPlyVar[targetVar] + PlyNumberVar[targetVar]) {
|
|
goToPly = StartPlyVar[targetVar] + PlyNumberVar[targetVar];
|
|
}
|
|
|
|
// reach to selected move checking legality
|
|
for (var thisPly = CurrentPly; thisPly < goToPly; ++thisPly) {
|
|
|
|
if (targetVar !== CurrentVar) {
|
|
for (var ii = 0; ii < PredecessorsVars[targetVar].length; ii++) {
|
|
if (PredecessorsVars[targetVar][ii] === CurrentVar) {
|
|
break;
|
|
}
|
|
}
|
|
if (ii === PredecessorsVars[targetVar].length) {
|
|
myAlert("error: unknown path to variation " + targetVar + " from " + CurrentVar + " in game " + (currentGame + 1), true);
|
|
return;
|
|
} else {
|
|
nextVarStartPly = StartPlyVar[PredecessorsVars[targetVar][ii + 1]];
|
|
for (ii = ii + 1; ii < PredecessorsVars[targetVar].length - 1; ii++) {
|
|
if (StartPlyVar[PredecessorsVars[targetVar][ii + 1]] !== StartPlyVar[PredecessorsVars[targetVar][ii]]) {
|
|
break;
|
|
}
|
|
}
|
|
nextVar = PredecessorsVars[targetVar][ii];
|
|
}
|
|
} else {
|
|
nextVar = nextVarStartPly = -1;
|
|
}
|
|
|
|
if (thisPly === nextVarStartPly) {
|
|
oldVar = CurrentVar;
|
|
CurrentVar = nextVar;
|
|
}
|
|
|
|
if (typeof (move = MovesVar[CurrentVar][thisPly]) == "undefined") {
|
|
break;
|
|
}
|
|
|
|
if (ParseLastMoveError = !ParseMove(move, thisPly)) {
|
|
text = (Math.floor(thisPly / 2) + 1) + ((thisPly % 2) === 0 ? '. ' : '... ');
|
|
myAlert('error: invalid ply ' + text + move + ' in game ' + (currentGame + 1) + ' variation ' + CurrentVar, true);
|
|
if (thisPly === nextVarStartPly) {
|
|
CurrentVar = oldVar;
|
|
}
|
|
break;
|
|
}
|
|
MoveColor = 1 - MoveColor;
|
|
|
|
}
|
|
|
|
// new position: update ply count, then refresh board
|
|
CurrentPly = thisPly;
|
|
|
|
if (scanOnly) {
|
|
return;
|
|
}
|
|
|
|
synchMoves();
|
|
|
|
RefreshBoard();
|
|
HighlightLastMove();
|
|
|
|
autoScrollToCurrentMoveIfEnabled();
|
|
|
|
// autoplay: restart timeout
|
|
if (AutoPlayInterval) {
|
|
clearTimeout(AutoPlayInterval);
|
|
AutoPlayInterval = null;
|
|
}
|
|
if (ParseLastMoveError) {
|
|
SetAutoPlay(false);
|
|
} else if (thisPly == goToPly) {
|
|
if (isAutoPlayOn) {
|
|
if (goToPly < StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]) {
|
|
AutoPlayInterval = setTimeout("MoveForward(1)", Delay);
|
|
} else {
|
|
if (autoplayNextGame && (CurrentVar === 0)) {
|
|
AutoPlayInterval = setTimeout("AutoplayNextGame()", Delay);
|
|
} else {
|
|
SetAutoPlay(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
customFunctionOnMove();
|
|
if (typeof (engineWinOnMove) == "function") {
|
|
engineWinOnMove();
|
|
}
|
|
}
|
|
|
|
var lastSynchCurrentVar = -1;
|
|
|
|
function synchMoves() {
|
|
var start, end;
|
|
if (CurrentVar === lastSynchCurrentVar) {
|
|
return;
|
|
}
|
|
Moves = new Array();
|
|
MoveComments = new Array();
|
|
for (var ii = 0; ii < PredecessorsVars[CurrentVar].length; ii++) {
|
|
start = StartPlyVar[PredecessorsVars[CurrentVar][ii]];
|
|
if (ii < PredecessorsVars[CurrentVar].length - 1) {
|
|
end = StartPlyVar[PredecessorsVars[CurrentVar][ii + 1]];
|
|
} else {
|
|
end = StartPlyVar[PredecessorsVars[CurrentVar][ii]] + PlyNumberVar[PredecessorsVars[CurrentVar][ii]];
|
|
}
|
|
for (var jj = start; jj < end; jj++) {
|
|
Moves[jj] = MovesVar[PredecessorsVars[CurrentVar][ii]][jj];
|
|
MoveComments[jj] = MoveCommentsVar[PredecessorsVars[CurrentVar][ii]][jj] || "";
|
|
}
|
|
}
|
|
MoveComments[jj] = MoveCommentsVar[PredecessorsVars[CurrentVar][ii - 1]][jj] || "";
|
|
PlyNumber = StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar] - StartPly;
|
|
lastSynchCurrentVar = CurrentVar;
|
|
}
|
|
|
|
|
|
function AutoplayNextGame() {
|
|
if (fatalErrorNumSinceReset === 0) {
|
|
if (numberOfGames > 0) {
|
|
Init((currentGame + 1) % numberOfGames);
|
|
if ((numberOfGames > 1) || (PlyNumber > 0)) {
|
|
SetAutoPlay(true);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
SetAutoPlay(false);
|
|
}
|
|
|
|
function MoveToNextComment(varOnly) {
|
|
for (var ii = CurrentPly + 1; ii <= StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]; ii++) {
|
|
if (MoveComments[ii].match(pgn4webVariationRegExp) || (!varOnly && strippedMoveComment(ii))) {
|
|
GoToMove(ii);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
function MoveToPrevComment(varOnly) {
|
|
for (var ii = (CurrentPly - 1); ii >= StartPly; ii--) {
|
|
if ((ii > 0 || CurrentVar > 0) && ii === StartPlyVar[HistVar[ii + 1]]) {
|
|
GoToMove(ii + 1, HistVar[ii]);
|
|
break;
|
|
}
|
|
if (MoveComments[ii].match(pgn4webVariationRegExp) || (!varOnly && strippedMoveComment(ii))) {
|
|
GoToMove(ii);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
function OpenGame(gameId) {
|
|
ParsePGNGameString(pgnGame[gameId]);
|
|
currentGame = gameId;
|
|
ParseLastMoveError = false;
|
|
|
|
if (LiveBroadcastDemo) {
|
|
if (gameDemoMaxPly[gameId] <= PlyNumber) {
|
|
PlyNumber = PlyNumberVar[0] = gameDemoMaxPly[gameId];
|
|
}
|
|
}
|
|
|
|
PrintHTML(false);
|
|
}
|
|
|
|
var CurrentVar = -1;
|
|
var lastVarWithNoMoves;
|
|
var numberOfVars;
|
|
var MovesVar;
|
|
var MoveCommentsVar;
|
|
var GameHasComments;
|
|
var GameHasVariations;
|
|
var StartPlyVar;
|
|
var PlyNumberVar;
|
|
var CurrentVarStack;
|
|
var PlyNumberStack;
|
|
var PredecessorsVars;
|
|
|
|
function initVar() {
|
|
MovesVar = new Array();
|
|
MoveCommentsVar = new Array();
|
|
GameHasComments = false;
|
|
GameHasVariations = false;
|
|
StartPlyVar = new Array();
|
|
PlyNumberVar = new Array();
|
|
CurrentVar = -1;
|
|
lastVarWithNoMoves = [false];
|
|
numberOfVars = 0;
|
|
CurrentVarStack = new Array();
|
|
PlyNumber = 1;
|
|
PlyNumberStack = new Array();
|
|
PredecessorsVars = new Array();
|
|
startVar(false);
|
|
}
|
|
|
|
function startVar(isContinuation) {
|
|
if (CurrentVar >= 0) {
|
|
CurrentVarStack.push(CurrentVar);
|
|
PlyNumberStack.push(PlyNumber);
|
|
}
|
|
CurrentVar = numberOfVars++;
|
|
PredecessorsVars[CurrentVar] = CurrentVarStack.slice(0);
|
|
PredecessorsVars[CurrentVar].push(CurrentVar);
|
|
MovesVar[CurrentVar] = new Array();
|
|
MoveCommentsVar[CurrentVar] = new Array();
|
|
if (!isContinuation) {
|
|
if (lastVarWithNoMoves[lastVarWithNoMoves.length - 1]) {
|
|
myAlert("warning: malformed PGN data in game " + (currentGame + 1) + ": variation " + CurrentVar + " starting before parent", true);
|
|
} else {
|
|
PlyNumber -= 1;
|
|
}
|
|
}
|
|
lastVarWithNoMoves.push(true);
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] = "";
|
|
StartPlyVar[CurrentVar] = StartPly + PlyNumber;
|
|
}
|
|
|
|
function closeVar() {
|
|
if (StartPly + PlyNumber === StartPlyVar[CurrentVar]) {
|
|
myAlert("warning: empty variation " + CurrentVar + " in game " + (currentGame + 1), false);
|
|
} else {
|
|
GameHasVariations = true;
|
|
}
|
|
lastVarWithNoMoves.pop();
|
|
PlyNumberVar[CurrentVar] = StartPly + PlyNumber - StartPlyVar[CurrentVar];
|
|
for (var ii = StartPlyVar[CurrentVar]; ii <= StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]; ii++) {
|
|
if (MoveCommentsVar[CurrentVar][ii]) {
|
|
MoveCommentsVar[CurrentVar][ii] = MoveCommentsVar[CurrentVar][ii].replace(/\s+/g, ' ');
|
|
MoveCommentsVar[CurrentVar][ii] = translateNAGs(MoveCommentsVar[CurrentVar][ii]);
|
|
MoveCommentsVar[CurrentVar][ii] = MoveCommentsVar[CurrentVar][ii].replace(/\s+$/g, '');
|
|
} else {
|
|
MoveCommentsVar[CurrentVar][ii] = '';
|
|
}
|
|
}
|
|
if (CurrentVarStack.length) {
|
|
CurrentVar = CurrentVarStack.pop();
|
|
PlyNumber = PlyNumberStack.pop();
|
|
} else {
|
|
myAlert("error: closeVar error" + " in game " + (currentGame + 1), true);
|
|
}
|
|
}
|
|
|
|
function childrenVars(thisPly, thisVar) {
|
|
if (typeof (thisVar) == "undefined") {
|
|
thisVar = CurrentVar;
|
|
}
|
|
if (typeof (thisPly) == "undefined") {
|
|
thisPly = CurrentPly;
|
|
}
|
|
var children = new Array();
|
|
for (var ii = thisVar; ii < numberOfVars; ii++) {
|
|
if ((ii === thisVar && StartPlyVar[ii] + PlyNumberVar[ii] > thisPly) || (realParentVar(ii) === thisVar && StartPlyVar[ii] === thisPly && PlyNumberVar[ii] > 0)) {
|
|
children.push(ii);
|
|
}
|
|
}
|
|
return children;
|
|
}
|
|
|
|
function realParentVar(childVar) {
|
|
for (var ii = PredecessorsVars[childVar].length - 1; ii > 0; ii--) {
|
|
if (StartPlyVar[PredecessorsVars[childVar][ii]] !== StartPlyVar[PredecessorsVars[childVar][ii - 1]]) {
|
|
return PredecessorsVars[childVar][ii - 1];
|
|
}
|
|
}
|
|
return PredecessorsVars[childVar][ii];
|
|
}
|
|
|
|
function goToNextVariationSibling() {
|
|
if (CurrentPly === StartPly) {
|
|
return false;
|
|
}
|
|
var siblings = childrenVars(CurrentPly - 1, HistVar[CurrentPly - 1]);
|
|
if (siblings.length < 2) {
|
|
return false;
|
|
}
|
|
for (var ii = 0; ii < siblings.length; ii++) {
|
|
if (siblings[ii] === CurrentVar) {
|
|
break;
|
|
}
|
|
}
|
|
if (siblings[ii] !== CurrentVar) {
|
|
return false;
|
|
}
|
|
GoToMove(CurrentPly, siblings[(ii + 1) % siblings.length]);
|
|
return true;
|
|
}
|
|
|
|
function goToFirstChild() {
|
|
var children = childrenVars(CurrentPly, CurrentVar);
|
|
if (children.length < 1) {
|
|
return false;
|
|
}
|
|
if (children[0] === CurrentVar) {
|
|
if (children.length < 2) {
|
|
return false;
|
|
}
|
|
GoToMove(CurrentPly + 1, children[1]);
|
|
} else {
|
|
GoToMove(CurrentPly + 1, children[0]);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function ParsePGNGameString(gameString) {
|
|
var ii, start, end, move, moveCount, needle, commentStart, commentEnd, isContinuation;
|
|
|
|
var ssRep, ss = gameString, ssComm;
|
|
ss = ss.replace(pgn4webVariationRegExpGlobal, "[%_pgn4web_variation_ $1]");
|
|
// empty variations to comments
|
|
while ((ssRep = ss.replace(/\((([\?!+#\s]|\$\d+|{[^}]*})*)\)/g, ' $1 ')) !== ss) {
|
|
ss = ssRep;
|
|
}
|
|
ss = ss.replace(/^\s/, '');
|
|
ss = ss.replace(/\s$/, '');
|
|
|
|
initVar();
|
|
|
|
PlyNumber = 0;
|
|
|
|
for (start = 0; start < ss.length; start++) {
|
|
|
|
switch (ss.charAt(start)) {
|
|
|
|
case ' ':
|
|
case '\b':
|
|
case '\f':
|
|
case '\n':
|
|
case '\r':
|
|
case '\t':
|
|
break;
|
|
|
|
case '$':
|
|
commentStart = start;
|
|
commentEnd = commentStart + 1;
|
|
while ('0123456789'.indexOf(ss.charAt(commentEnd)) >= 0) {
|
|
commentEnd++;
|
|
if (commentEnd >= ss.length) {
|
|
break;
|
|
}
|
|
}
|
|
if (MoveCommentsVar[CurrentVar][StartPly + PlyNumber]) {
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ' ';
|
|
}
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += translateNAGs(ss.substring(commentStart, commentEnd).replace(/(^\s*|\s*$)/, ''));
|
|
start = commentEnd - 1;
|
|
break;
|
|
|
|
case '!':
|
|
case '?':
|
|
commentStart = start;
|
|
commentEnd = commentStart + 1;
|
|
while ('!?'.indexOf(ss.charAt(commentEnd)) >= 0) {
|
|
commentEnd++;
|
|
if (commentEnd >= ss.length) {
|
|
break;
|
|
}
|
|
}
|
|
if (MoveCommentsVar[CurrentVar][StartPly + PlyNumber]) {
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ' ';
|
|
}
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ss.substring(commentStart, commentEnd);
|
|
start = commentEnd - 1;
|
|
break;
|
|
|
|
case '{':
|
|
commentStart = start + 1;
|
|
commentEnd = ss.indexOf('}', start + 1);
|
|
if (commentEnd < 0) {
|
|
myAlert('error: missing end comment } in game ' + (currentGame + 1), true);
|
|
commentEnd = ss.length;
|
|
}
|
|
if (MoveCommentsVar[CurrentVar][StartPly + PlyNumber]) {
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ' ';
|
|
}
|
|
ssComm = translateNAGs(ss.substring(commentStart, commentEnd).replace(/(^\s*|\s*$)/, ''));
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ssComm;
|
|
GameHasComments = GameHasComments || ssComm.replace(/\[%[^\]]*\]\s*/g, '').replace(basicNAGs, '').replace(/^\s+$/, '') !== '';
|
|
start = commentEnd;
|
|
break;
|
|
|
|
case '%':
|
|
// % must be first char of the line
|
|
if ((start > 0) && (ss.charAt(start - 1) != '\n')) {
|
|
break;
|
|
}
|
|
commentStart = start + 1;
|
|
commentEnd = ss.indexOf('\n', start + 1);
|
|
if (commentEnd < 0) {
|
|
commentEnd = ss.length;
|
|
}
|
|
start = commentEnd;
|
|
break;
|
|
|
|
case ';':
|
|
commentStart = start + 1;
|
|
commentEnd = ss.indexOf('\n', start + 1);
|
|
if (commentEnd < 0) {
|
|
commentEnd = ss.length;
|
|
}
|
|
if (MoveCommentsVar[CurrentVar][StartPly + PlyNumber]) {
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ' ';
|
|
}
|
|
ssComm = translateNAGs(ss.substring(commentStart, commentEnd).replace(/(^\s*|\s*$)/, ''));
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ssComm;
|
|
GameHasComments = GameHasComments || ssComm.replace(/\[%[^\]]*\]\s*/g, '').replace(basicNAGs, '').replace(/^\s+$/, '') !== '';
|
|
start = commentEnd;
|
|
break;
|
|
|
|
case '(':
|
|
if (isContinuation = (ss.charAt(start + 1) == '*')) {
|
|
start += 1;
|
|
}
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ' [%pgn4web_variation ' + numberOfVars + '] ';
|
|
startVar(isContinuation);
|
|
break;
|
|
|
|
case ')':
|
|
closeVar();
|
|
break;
|
|
|
|
default:
|
|
|
|
needle = new Array('1-0', '0-1', '1/2-1/2', '*');
|
|
for (ii = 0; ii < needle.length; ii++) {
|
|
if (ss.indexOf(needle[ii], start) == start) {
|
|
if (CurrentVar === 0) {
|
|
end = ss.length;
|
|
} else {
|
|
end = start + needle[ii].length;
|
|
if (MoveCommentsVar[CurrentVar][StartPly + PlyNumber]) {
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += ' ';
|
|
}
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] += needle[ii];
|
|
}
|
|
start = end;
|
|
break;
|
|
}
|
|
}
|
|
if (start == ss.length) {
|
|
break;
|
|
}
|
|
|
|
moveCount = Math.floor((StartPly + PlyNumber) / 2) + 1;
|
|
needle = moveCount.toString();
|
|
if (ss.indexOf(needle, start) == start) {
|
|
start += needle.length;
|
|
while (' .\n\r'.indexOf(ss.charAt(start)) != -1) {
|
|
start++;
|
|
}
|
|
}
|
|
|
|
if ((end = start + ss.substr(start).search(/[\s${;!?()]/)) < start) {
|
|
end = ss.length;
|
|
}
|
|
move = ss.substring(start, end);
|
|
MovesVar[CurrentVar][StartPly + PlyNumber] = CleanMove(move);
|
|
lastVarWithNoMoves[lastVarWithNoMoves.length - 1] = false;
|
|
if (ss.charAt(end) == ' ') {
|
|
start = end;
|
|
} else {
|
|
start = end - 1;
|
|
}
|
|
if (!MovesVar[CurrentVar][StartPly + PlyNumber].match(/^[\s+#]*$/)) { // to cope with malsformed PGN data
|
|
PlyNumber++;
|
|
MoveCommentsVar[CurrentVar][StartPly + PlyNumber] = '';
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (CurrentVar !== 0) {
|
|
myAlert("error: ParsePGNGameString ends with CurrentVar " + CurrentVar + " in game " + (currentGame + 1), true);
|
|
while (CurrentVar > 0) {
|
|
closeVar();
|
|
}
|
|
}
|
|
|
|
StartPlyVar[0] = StartPly;
|
|
PlyNumberVar[0] = PlyNumber;
|
|
|
|
GameHasComments = GameHasComments || GameHasVariations;
|
|
|
|
lastSynchCurrentVar = -1;
|
|
}
|
|
|
|
var NAGstyle = 'default';
|
|
var NAG = new Array();
|
|
NAG[0] = '';
|
|
NAG[1] = '!'; // 'good move';
|
|
NAG[2] = '?'; // 'bad move';
|
|
NAG[3] = '!!'; // 'very good move';
|
|
NAG[4] = '??'; // 'very bad move';
|
|
NAG[5] = '!?'; // 'speculative move';
|
|
NAG[6] = '?!'; // 'questionable move';
|
|
NAG[7] = 'forced move'; // '[]';
|
|
NAG[8] = 'singular move'; // '[]';
|
|
NAG[9] = 'worst move'; // '??';
|
|
NAG[10] = 'drawish position'; // '=';
|
|
NAG[11] = 'equal chances, quiet position'; // '=';
|
|
NAG[12] = 'equal chances, active position'; // '=';
|
|
NAG[13] = 'unclear position'; // '~~';
|
|
NAG[14] = 'White has a slight advantage'; // NAG[15] = '+/=';
|
|
NAG[16] = 'White has a moderate advantage'; // NAG[17] = '+/-';
|
|
NAG[18] = 'White has a decisive advantage'; // NAG[19] = '+-';
|
|
NAG[20] = 'White has a crushing advantage'; // NAG[21] = '+-';
|
|
NAG[22] = 'White is in zugzwang'; // NAG[23] = '(.)';
|
|
NAG[24] = 'White has a slight space advantage'; // NAG[25] = '()';
|
|
NAG[26] = 'White has a moderate space advantage'; // NAG[27] = '()';
|
|
NAG[28] = 'White has a decisive space advantage'; // NAG[29] = '()';
|
|
NAG[30] = 'White has a slight time (development) advantage'; // NAG[31] = '@';
|
|
NAG[32] = 'White has a moderate time (development) advantage'; // NAG[33] = '@';
|
|
NAG[34] = 'White has a decisive time (development) advantage'; // NAG[35] = '@';
|
|
NAG[36] = 'White has the initiative'; // NAG[37] = '|^';
|
|
NAG[38] = 'White has a lasting initiative'; // NAG[39] = '|^';
|
|
NAG[40] = 'White has the attack'; // NAG[41] = '->';
|
|
NAG[42] = 'White has insufficient compensation for material deficit';
|
|
NAG[44] = 'White has sufficient compensation for material deficit'; // NAG[45] = '=/~';
|
|
NAG[46] = 'White has more than adequate compensation for material deficit'; // NAG[47] = '=/~';
|
|
NAG[48] = 'White has a slight center control advantage'; // NAG[49] = '[+]';
|
|
NAG[50] = 'White has a moderate center control advantage'; // NAG[51] = '[+]';
|
|
NAG[52] = 'White has a decisive center control advantage'; // NAG[53] = '[+]';
|
|
NAG[54] = 'White has a slight kingside control advantage'; // NAG[55] = '>>';
|
|
NAG[56] = 'White has a moderate kingside control advantage'; // NAG[57] = '>>';
|
|
NAG[58] = 'White has a decisive kingside control advantage'; // NAG[59] = '>>';
|
|
NAG[60] = 'White has a slight queenside control advantage'; // NAG[61] = '<<';
|
|
NAG[62] = 'White has a moderate queenside control advantage'; // NAG[63] = '<<';
|
|
NAG[64] = 'White has a decisive queenside control advantage'; // NAG[65] = '<<';
|
|
NAG[66] = 'White has a vulnerable first rank';
|
|
NAG[68] = 'White has a well protected first rank';
|
|
NAG[70] = 'White has a poorly protected king';
|
|
NAG[72] = 'White has a well protected king';
|
|
NAG[74] = 'White has a poorly placed king';
|
|
NAG[76] = 'White has a well placed king';
|
|
NAG[78] = 'White has a very weak pawn structure';
|
|
NAG[80] = 'White has a moderately weak pawn structure';
|
|
NAG[82] = 'White has a moderately strong pawn structure';
|
|
NAG[84] = 'White has a very strong pawn structure';
|
|
NAG[86] = 'White has poor knight placement';
|
|
NAG[88] = 'White has good knight placement';
|
|
NAG[90] = 'White has poor bishop placement';
|
|
NAG[92] = 'White has good bishop placement';
|
|
NAG[94] = 'White has poor rook placement';
|
|
NAG[96] = 'White has good rook placement';
|
|
NAG[98] = 'White has poor queen placement';
|
|
NAG[100] = 'White has good queen placement';
|
|
NAG[102] = 'White has poor piece coordination';
|
|
NAG[104] = 'White has good piece coordination';
|
|
NAG[106] = 'White has played the opening very poorly';
|
|
NAG[108] = 'White has played the opening poorly';
|
|
NAG[110] = 'White has played the opening well';
|
|
NAG[112] = 'White has played the opening very well';
|
|
NAG[114] = 'White has played the middlegame very poorly';
|
|
NAG[116] = 'White has played the middlegame poorly';
|
|
NAG[118] = 'White has played the middlegame well';
|
|
NAG[120] = 'White has played the middlegame very well';
|
|
NAG[122] = 'White has played the ending very poorly';
|
|
NAG[124] = 'White has played the ending poorly';
|
|
NAG[126] = 'White has played the ending well';
|
|
NAG[128] = 'White has played the ending very well';
|
|
NAG[130] = 'White has slight counterplay'; // NAG[131] = '<=>';
|
|
NAG[132] = 'White has moderate counterplay'; // NAG[133] = '<=>';
|
|
NAG[134] = 'White has decisive counterplay'; // NAG[135] = '<=>';
|
|
NAG[136] = 'White has moderate time control pressure'; // NAG[137] = '(+)';
|
|
NAG[138] = 'White has severe time control pressure'; // NAG[139] = '(+)';
|
|
|
|
for (i = 14; i < 139; i += 2) {
|
|
NAG[i + 1] = NAG[i].replace("White", "Black");
|
|
}
|
|
|
|
function translateNAGs(comment) {
|
|
var matches = comment.match(/\$+[0-9]+/g);
|
|
if (matches) {
|
|
for (var ii = 0; ii < matches.length; ii++) {
|
|
var nag = matches[ii].substr(1);
|
|
if (NAG[nag] !== undefined) {
|
|
comment = comment.replace(new RegExp("\\$+" + nag + "(?!\\d)"), NAG[nag]);
|
|
}
|
|
}
|
|
}
|
|
return comment;
|
|
}
|
|
|
|
function ParseMove(move, plyCount) {
|
|
var ii, ll;
|
|
var rem;
|
|
var toRowMarker = -1;
|
|
|
|
castleRook = -1;
|
|
mvIsCastling = 0;
|
|
mvIsPromotion = 0;
|
|
mvCapture = 0;
|
|
mvFromCol = -1;
|
|
mvFromRow = -1;
|
|
mvToCol = -1;
|
|
mvToRow = -1;
|
|
mvPiece = -1;
|
|
mvPieceId = -1;
|
|
mvPieceOnTo = -1;
|
|
mvCaptured = -1;
|
|
mvCapturedId = -1;
|
|
mvIsNull = 0;
|
|
|
|
if (typeof (move) == "undefined") {
|
|
return false;
|
|
}
|
|
|
|
HistEnPassant[plyCount + 1] = false;
|
|
HistEnPassantCol[plyCount + 1] = -1;
|
|
|
|
if (move.indexOf('--') === 0) {
|
|
mvIsNull = 1;
|
|
CheckLegality('--', plyCount);
|
|
return true;
|
|
}
|
|
|
|
// get destination column/row remembering what's left e.g. Rdxc3 exf8=Q#
|
|
for (ii = move.length - 1; ii > 0; ii--) {
|
|
if (!isNaN(move.charAt(ii))) {
|
|
mvToCol = move.charCodeAt(ii - 1) - 97;
|
|
mvToRow = move.charAt(ii) - 1;
|
|
rem = move.substring(0, ii - 1);
|
|
toRowMarker = ii;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// final square did not make sense: maybe a castle?
|
|
if ((mvToCol < 0) || (mvToCol > 7) || (mvToRow < 0) || (mvToRow > 7)) {
|
|
// long castling first: looking for o-o will get o-o-o too
|
|
if (move.indexOf('O-O-O') === 0) {
|
|
mvIsCastling = 1;
|
|
mvPiece = 1;
|
|
mvPieceId = 0;
|
|
mvPieceOnTo = 1;
|
|
mvFromCol = 4;
|
|
mvToCol = 2;
|
|
mvFromRow = 7 * MoveColor;
|
|
mvToRow = 7 * MoveColor;
|
|
return CheckLegality('O-O-O', plyCount);
|
|
} else if (move.indexOf('O-O') === 0) {
|
|
mvIsCastling = 1;
|
|
mvPiece = 1;
|
|
mvPieceId = 0;
|
|
mvPieceOnTo = 1;
|
|
mvFromCol = 4;
|
|
mvToCol = 6;
|
|
mvFromRow = 7 * MoveColor;
|
|
mvToRow = 7 * MoveColor;
|
|
return CheckLegality('O-O', plyCount);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
rem = rem.replace(/-/g, '');
|
|
// get piece and origin square: mark captures ('x' is there)
|
|
ll = rem.length;
|
|
if (ll > 4) {
|
|
return false;
|
|
}
|
|
mvPiece = -1; // make sure mvPiece is properly assigned later
|
|
if (ll === 0) {
|
|
mvPiece = 6;
|
|
} else {
|
|
for (ii = 5; ii > 0; ii--) {
|
|
if (rem.charAt(0) == PiecesArr[ii - 1]) {
|
|
mvPiece = ii;
|
|
break;
|
|
}
|
|
}
|
|
if (mvPiece == -1) {
|
|
if (columnsLetters.toLowerCase().indexOf(rem.charAt(0)) >= 0) {
|
|
mvPiece = 6;
|
|
}
|
|
}
|
|
if (mvPiece == -1) {
|
|
return false;
|
|
}
|
|
if (rem.charAt(ll - 1) == 'x') {
|
|
mvCapture = 1;
|
|
}
|
|
if (isNaN(move.charAt(ll - 1 - mvCapture))) {
|
|
mvFromCol = move.charCodeAt(ll - 1 - mvCapture) - 97;
|
|
if ((mvFromCol < 0) || (mvFromCol > 7)) {
|
|
mvFromCol = -1;
|
|
}
|
|
} else {
|
|
mvFromRow = move.charAt(ll - 1 - mvCapture) - 1;
|
|
if ((mvFromRow < 0) || (mvFromRow > 7)) {
|
|
mvFromRow = -1;
|
|
} else {
|
|
mvFromCol = move.charCodeAt(ll - 2 - mvCapture) - 97;
|
|
if ((mvFromCol < 0) || (mvFromCol > 7)) {
|
|
mvFromCol = -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((ll > 1) && (!mvCapture) && (mvFromCol == -1) && (mvFromRow == -1)) {
|
|
return false;
|
|
}
|
|
if ((mvPiece == 6) && (!mvCapture) && (mvFromCol == -1) && (mvFromRow == -1)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// "square to" occupied: capture (note en-passant case)
|
|
if ((Board[mvToCol][mvToRow] !== 0) || ((mvPiece == 6) && (HistEnPassant[plyCount]) && (mvToCol == HistEnPassantCol[plyCount]) && (mvToRow == 5 - 3 * MoveColor))) {
|
|
mvCapture = 1;
|
|
}
|
|
|
|
mvPieceOnTo = mvPiece;
|
|
if (mvPiece == 6) {
|
|
// move contains '=' or char after destination row: might be a promotion
|
|
ii = move.indexOf('=');
|
|
if (ii < 0) {
|
|
ii = toRowMarker;
|
|
}
|
|
if ((ii > 0) && (ii < move.length - 1)) {
|
|
var newPiece = move.charAt(ii + 1);
|
|
if (newPiece == PiecesArr[1]) {
|
|
mvPieceOnTo = 2;
|
|
} else if (newPiece == PiecesArr[2]) {
|
|
mvPieceOnTo = 3;
|
|
} else if (newPiece == PiecesArr[3]) {
|
|
mvPieceOnTo = 4;
|
|
} else if (newPiece == PiecesArr[4]) {
|
|
mvPieceOnTo = 5;
|
|
}
|
|
if (mvPieceOnTo != mvPiece) {
|
|
mvIsPromotion = 1;
|
|
}
|
|
}
|
|
if ((mvToRow == 7 * (1 - MoveColor)) ? !mvIsPromotion : mvIsPromotion) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// which captured piece: if nothing found must be en-passant
|
|
if (mvCapture) {
|
|
for (mvCapturedId = 15; mvCapturedId >= 0; mvCapturedId--) {
|
|
if ((PieceType[1 - MoveColor][mvCapturedId] > 0) && (PieceCol[1 - MoveColor][mvCapturedId] == mvToCol) && (PieceRow[1 - MoveColor][mvCapturedId] == mvToRow)) {
|
|
mvCaptured = PieceType[1 - MoveColor][mvCapturedId];
|
|
if (mvCaptured == 1) {
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if ((mvPiece == 6) && (mvCapturedId < 1) && (HistEnPassant[plyCount])) {
|
|
for (mvCapturedId = 15; mvCapturedId >= 0; mvCapturedId--) {
|
|
if ((PieceType[1 - MoveColor][mvCapturedId] == 6) && (PieceCol[1 - MoveColor][mvCapturedId] == mvToCol) && (PieceRow[1 - MoveColor][mvCapturedId] == 4 - MoveColor)) {
|
|
mvCaptured = PieceType[1 - MoveColor][mvCapturedId];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// check move legality
|
|
if (!CheckLegality(PiecesArr[mvPiece - 1], plyCount)) {
|
|
return false;
|
|
}
|
|
|
|
// pawn moved: check en-passant possibility
|
|
if (mvPiece == 6) {
|
|
if (Math.abs(HistRow[0][plyCount] - mvToRow) == 2) {
|
|
HistEnPassant[plyCount + 1] = true;
|
|
HistEnPassantCol[plyCount + 1] = mvToCol;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function SetGameSelectorOptions(head, num, chEvent, chSite, chRound, chWhite, chBlack, chResult, chDate) {
|
|
if (typeof (head) == "string") {
|
|
gameSelectorHead = head;
|
|
}
|
|
gameSelectorNum = (num === true);
|
|
gameSelectorChEvent = Math.max(Math.min(chEvent, 32) || 0, 0) || 0;
|
|
gameSelectorChSite = Math.max(Math.min(chSite, 32) || 0, 0) || 0;
|
|
gameSelectorChRound = Math.max(Math.min(chRound, 32) || 0, 0) || 0;
|
|
gameSelectorChWhite = Math.max(Math.min(chWhite, 32) || 0, 0) || 0;
|
|
gameSelectorChBlack = Math.max(Math.min(chBlack, 32) || 0, 0) || 0;
|
|
gameSelectorChResult = Math.max(Math.min(chResult, 32) || 0, 0) || 0;
|
|
gameSelectorChDate = Math.max(Math.min(chDate, 32) || 0, 0) || 0;
|
|
}
|
|
|
|
var clickedSquareInterval = null;
|
|
|
|
function clickedSquare(ii, jj) {
|
|
if (clickedSquareInterval) {
|
|
return;
|
|
} // dont trigger twice
|
|
var squareId = 'tcol' + jj + 'trow' + ii;
|
|
var theObj = document.getElementById(squareId);
|
|
if (theObj) {
|
|
var oldClass = theObj.className;
|
|
theObj.className = (ii + jj) % 2 === 0 ? "blackSquare" : "whiteSquare";
|
|
clickedSquareInterval = setTimeout("reset_after_click(" + ii + "," + jj + ",'" + oldClass + "','" + theObj.className + "')", 66);
|
|
clearSelectedText();
|
|
}
|
|
}
|
|
|
|
function reset_after_click(ii, jj, oldClass, newClass) {
|
|
var theObj = document.getElementById('tcol' + jj + 'trow' + ii);
|
|
if (theObj) {
|
|
// square class changed again by pgn4web already: dont touch it anymore e.g. autoplay
|
|
if (theObj.className == newClass) {
|
|
theObj.className = oldClass;
|
|
}
|
|
clickedSquareInterval = null;
|
|
}
|
|
}
|
|
|
|
|
|
var lastSearchPgnExpression = "";
|
|
|
|
function gameNumberSearchPgn(searchExpression, backward, includeCurrent) {
|
|
lastSearchPgnExpression = searchExpression;
|
|
if (searchExpression === "") {
|
|
return false;
|
|
}
|
|
// replace newline with spaces so that we can use regexp "." on whole game
|
|
var newlinesRegExp = new RegExp("[\n\r]", "gm");
|
|
var searchExpressionRegExp = new RegExp(searchExpression, "im");
|
|
// at start currentGame might still be -1
|
|
var thisCurrentGame = (currentGame < 0) || (currentGame >= numberOfGames) ? 0 : currentGame;
|
|
var needle = fullPgnGame(thisCurrentGame);
|
|
if (includeCurrent && needle.replace(newlinesRegExp, " ").match(searchExpressionRegExp)) {
|
|
return thisCurrentGame;
|
|
}
|
|
var delta = backward ? -1 : +1;
|
|
for (var thisGame = (thisCurrentGame + delta + numberOfGames) % numberOfGames; thisGame != thisCurrentGame; thisGame = (thisGame + delta + numberOfGames) % numberOfGames) {
|
|
needle = fullPgnGame(thisGame);
|
|
if (needle.replace(newlinesRegExp, " ").match(searchExpressionRegExp)) {
|
|
return thisGame;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function searchPgnGame(searchExpression, backward) {
|
|
if (typeof (searchExpression) == "undefined") {
|
|
searchExpression = "";
|
|
}
|
|
lastSearchPgnExpression = searchExpression;
|
|
var theObj = document.getElementById('searchPgnExpression');
|
|
if (theObj) {
|
|
theObj.value = searchExpression;
|
|
}
|
|
if ((searchExpression === "") || (numberOfGames < 2)) {
|
|
return;
|
|
}
|
|
var thisGame = gameNumberSearchPgn(searchExpression, backward, false);
|
|
if ((thisGame !== false) && (thisGame != currentGame)) {
|
|
Init(thisGame);
|
|
}
|
|
}
|
|
|
|
function searchPgnGamePrompt() {
|
|
if (numberOfGames < 2) {
|
|
alert("info: search prompt disabled with less than 2 games");
|
|
return;
|
|
}
|
|
var searchExpression = prompt("Please enter search pattern for PGN games:", lastSearchPgnExpression);
|
|
if (searchExpression) {
|
|
searchPgnGame(searchExpression);
|
|
}
|
|
}
|
|
|
|
function searchPgnGameForm() {
|
|
var theObj = document.getElementById('searchPgnExpression');
|
|
if (theObj) {
|
|
searchPgnGame(document.getElementById('searchPgnExpression').value);
|
|
}
|
|
}
|
|
|
|
var chessMovesRegExp = new RegExp("\\b((\\d+(\\.{1,3}|\\s)\\s*)?((([KQRBN][a-h1-8]?)|[a-h])?x?[a-h][1-8](=[QRNB])?|O-O-O|O-O)\\b[!?+#]*)", "g");
|
|
|
|
function fixCommentForDisplay(comment) {
|
|
return comment.replace(chessMovesRegExp, '<SPAN CLASS="commentMove">$1</SPAN>');
|
|
}
|
|
|
|
var tableSize = 0;
|
|
var textSelectOptions = '';
|
|
|
|
function PrintHTML(forceBoardUpdate) {
|
|
var ii, jj, text, theObj, squareId, imageId, squareCoord, squareTitle, numText, textSO;
|
|
|
|
// chessboard
|
|
|
|
if (theObj = document.getElementById("GameBoard")) {
|
|
if (forceBoardUpdate || !document.getElementById("boardTable")) {
|
|
text = '<TABLE CLASS="boardTable" ID="boardTable" CELLSPACING=0 CELLPADDING=0';
|
|
text += (tableSize > 0) ? ' STYLE="width: ' + tableSize + 'px; height: ' + tableSize + 'px;">' : '>';
|
|
for (ii = 0; ii < 8; ++ii) {
|
|
text += '<TR>';
|
|
for (jj = 0; jj < 8; ++jj) {
|
|
squareId = 'tcol' + jj + 'trow' + ii;
|
|
imageId = 'img_' + squareId;
|
|
text += (ii + jj) % 2 === 0 ? '<TD CLASS="whiteSquare" ID="' + squareId + '" BGCOLOR="#FFFFFF"' : '<TD CLASS="blackSquare" ID="' + squareId + '" BGCOLOR="#D3D3D3"';
|
|
text += ' ALIGN="center" VALIGN="middle" ONCLICK="clickedSquare(' + ii + ',' + jj + ')">';
|
|
squareCoord = IsRotated ? String.fromCharCode(72 - jj, 49 + ii) : String.fromCharCode(jj + 65, 56 - ii);
|
|
squareTitle = squareCoord;
|
|
if (boardTitle[jj][ii] !== '') {
|
|
squareTitle += ': ' + boardTitle[jj][ii];
|
|
}
|
|
text += '<IMG SRC="' + ClearImg.src + '" CLASS="pieceImage" STYLE="border: none; display: block; vertical-align: middle;" ONCLICK="boardOnClick[' + jj + '][' + ii + '](this, event);" ID="' + imageId + '" TITLE="' + squareTitle + '" ' + 'ONFOCUS="this.blur()" /></TD>';
|
|
}
|
|
text += '</TR>';
|
|
}
|
|
text += '</TABLE>';
|
|
|
|
theObj.innerHTML = text;
|
|
}
|
|
}
|
|
|
|
if (theObj = document.getElementById("boardTable")) {
|
|
tableSize = theObj.offsetWidth;
|
|
if (tableSize > 0) { // coping with browser always returning 0 to offsetWidth
|
|
theObj.style.height = tableSize + "px";
|
|
}
|
|
}
|
|
|
|
// control buttons
|
|
|
|
if (theObj = document.getElementById("GameButtons")) {
|
|
var numButtons = 5;
|
|
var spaceSize = 3;
|
|
var buttonSize = (tableSize - spaceSize * (numButtons - 1)) / numButtons;
|
|
text = '<FORM NAME="GameButtonsForm" STYLE="display:inline;"><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0"><TR><TD><INPUT ID="startButton" TYPE="BUTTON" VALUE="<<" STYLE="';
|
|
if (buttonSize > 0) {
|
|
text += 'width: ' + buttonSize + 'px;';
|
|
}
|
|
text += '"; CLASS="buttonControl" TITLE="go to game start" ID="btnGoToStart" onClick="clickedBbtn(this,event);" ONFOCUS="this.blur();"></TD><TD CLASS="buttonControlSpace" WIDTH="' + spaceSize + '"></TD><TD><INPUT ID="backButton" TYPE="BUTTON" VALUE="<" STYLE="';
|
|
if (buttonSize > 0) {
|
|
text += 'width: ' + buttonSize + 'px;';
|
|
}
|
|
text += '"; CLASS="buttonControl" TITLE="move backward" ID="btnMoveBackward1" onClick="clickedBbtn(this,event);" ONFOCUS="this.blur();"></TD><TD CLASS="buttonControlSpace" WIDTH="' + spaceSize + '"></TD><TD>';
|
|
text += '<INPUT ID="autoplayButton" TYPE="BUTTON" VALUE=' + (isAutoPlayOn ? "=" : "+") + ' STYLE="';
|
|
if (buttonSize > 0) {
|
|
text += 'width: ' + buttonSize + 'px;';
|
|
}
|
|
text += isAutoPlayOn ? '"; CLASS="buttonControlStop" TITLE="toggle autoplay (stop)" ' : '"; CLASS="buttonControlPlay" TITLE="toggle autoplay (start)" ';
|
|
text += ' ID="btnPlay" NAME="AutoPlay" onClick="clickedBbtn(this,event);" ONFOCUS="this.blur();"></TD><TD CLASS="buttonControlSpace" WIDTH="' + spaceSize + '"></TD><TD><INPUT ID="forwardButton" TYPE="BUTTON" VALUE=">" STYLE="';
|
|
if (buttonSize > 0) {
|
|
text += 'width: ' + buttonSize + 'px;';
|
|
}
|
|
text += '"; CLASS="buttonControl" TITLE="move forward" ID="btnMoveForward1" onClick="clickedBbtn(this,event);" ONFOCUS="this.blur();"></TD><TD CLASS="buttonControlSpace" WIDTH="' + spaceSize + '"></TD><TD><INPUT ID="endButton" TYPE="BUTTON" VALUE=">>" STYLE="';
|
|
if (buttonSize > 0) {
|
|
text += 'width: ' + buttonSize + 'px;';
|
|
}
|
|
text += '"; CLASS="buttonControl" TITLE="go to game end" ID="btnGoToEnd" onClick="clickedBbtn(this,event);" ONFOCUS="this.blur();"></TD></TR></TABLE></FORM>';
|
|
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
// game selector
|
|
|
|
if (theObj = document.getElementById("GameSelector")) {
|
|
if (firstStart) {
|
|
textSelectOptions = '';
|
|
}
|
|
if (numberOfGames < 2) {
|
|
while (theObj.firstChild) {
|
|
theObj.removeChild(theObj.firstChild);
|
|
}
|
|
textSelectOptions = '';
|
|
} else {
|
|
if (textSelectOptions === '') {
|
|
if (gameSelectorNum) {
|
|
gameSelectorNumLenght = Math.floor(Math.log(numberOfGames) / Math.log(10)) + 1;
|
|
}
|
|
text = '<FORM NAME="GameSel" STYLE="display:inline;"><SELECT ID="GameSelSelect" NAME="GameSelSelect" STYLE="';
|
|
if (tableSize > 0) {
|
|
text += 'width: ' + tableSize + 'px; ';
|
|
}
|
|
text += 'font-family: monospace;" CLASS="selectControl" TITLE="select a game" ONCHANGE="this.blur(); if (this.value >= 0) { Init(this.value); this.value = -1; }" ONFOCUS="disableShortcutKeysAndStoreStatus();" ONBLUR="restoreShortcutKeysStatus();"><OPTION CLASS="optionSelectControl" value=-1>';
|
|
|
|
var blanks = '';
|
|
for (ii = 0; ii < 32; ii++) {
|
|
blanks += ' ';
|
|
}
|
|
var headDisplay = (gameSelectorNum ? blanks.substring(0, gameSelectorNumLenght) + ' ' : '') + gameSelectorHead;
|
|
text += headDisplay.replace(/ /g, ' ');
|
|
|
|
for (ii = 0; ii < numberOfGames; ii++) {
|
|
textSelectOptions += '<OPTION CLASS="optionSelectControl" value=' + ii + '>';
|
|
textSO = '';
|
|
if (gameSelectorNum) {
|
|
numText = ' ' + (ii + 1);
|
|
textSO += blanks.substr(0, gameSelectorNumLenght - (numText.length - 1)) + numText + ' ';
|
|
}
|
|
if (gameSelectorChEvent > 0) {
|
|
textSO += ' ' + gameEvent[ii].substring(0, gameSelectorChEvent) + blanks.substr(0, gameSelectorChEvent - gameEvent[ii].length) + ' ';
|
|
}
|
|
if (gameSelectorChSite > 0) {
|
|
textSO += ' ' + gameSite[ii].substring(0, gameSelectorChSite) + blanks.substr(0, gameSelectorChSite - gameSite[ii].length) + ' ';
|
|
}
|
|
if (gameSelectorChRound > 0) {
|
|
textSO += ' ' + blanks.substr(0, gameSelectorChRound - gameRound[ii].length) + gameRound[ii].substring(0, gameSelectorChRound) + ' ';
|
|
}
|
|
if (gameSelectorChWhite > 0) {
|
|
textSO += ' ' + gameWhite[ii].substring(0, gameSelectorChWhite) + blanks.substr(0, gameSelectorChWhite - gameWhite[ii].length) + ' ';
|
|
}
|
|
if (gameSelectorChBlack > 0) {
|
|
textSO += ' ' + gameBlack[ii].substring(0, gameSelectorChBlack) + blanks.substr(0, gameSelectorChBlack - gameBlack[ii].length) + ' ';
|
|
}
|
|
if (gameSelectorChResult > 0) {
|
|
textSO += ' ' + gameResult[ii].substring(0, gameSelectorChResult) + blanks.substr(0, gameSelectorChResult - gameResult[ii].length) + ' ';
|
|
}
|
|
if (gameSelectorChDate > 0) {
|
|
textSO += ' ' + gameDate[ii].substring(0, gameSelectorChDate) + blanks.substr(0, gameSelectorChDate - gameDate[ii].length) + ' ';
|
|
}
|
|
textSelectOptions += textSO.replace(/ /g, ' ');
|
|
}
|
|
text += textSelectOptions.replace(/&(amp|lt|gt);/g, '&$1;') + '</SELECT></FORM>'; // see function simpleHtmlentities()
|
|
theObj.innerHTML = text;
|
|
}
|
|
}
|
|
}
|
|
|
|
// game event
|
|
|
|
if (theObj = document.getElementById("GameEvent")) {
|
|
theObj.innerHTML = gameEvent[currentGame];
|
|
}
|
|
|
|
// game round
|
|
|
|
if (theObj = document.getElementById("GameRound")) {
|
|
theObj.innerHTML = gameRound[currentGame];
|
|
}
|
|
|
|
// game site
|
|
|
|
if (theObj = document.getElementById("GameSite")) {
|
|
theObj.innerHTML = gameSite[currentGame];
|
|
}
|
|
|
|
// game date
|
|
|
|
if (theObj = document.getElementById("GameDate")) {
|
|
theObj.innerHTML = gameDate[currentGame];
|
|
theObj.style.whiteSpace = "nowrap";
|
|
}
|
|
|
|
// game white
|
|
|
|
if (theObj = document.getElementById("GameWhite")) {
|
|
theObj.innerHTML = gameWhite[currentGame];
|
|
}
|
|
|
|
// game black
|
|
|
|
if (theObj = document.getElementById("GameBlack")) {
|
|
theObj.innerHTML = gameBlack[currentGame];
|
|
}
|
|
|
|
// game result
|
|
|
|
if (theObj = document.getElementById("GameResult")) {
|
|
theObj.innerHTML = gameResult[currentGame];
|
|
theObj.style.whiteSpace = "nowrap";
|
|
}
|
|
|
|
// game text
|
|
|
|
if (theObj = document.getElementById("GameText")) {
|
|
variationTextDepth = -1;
|
|
text = '<SPAN ID="ShowPgnText">' + variationTextFromId(0);
|
|
+'</SPAN>';
|
|
theObj.innerHTML = text;
|
|
}
|
|
|
|
setB1C1F1G1boardShortcuts(); // depend on presence of comments
|
|
|
|
// game searchbox
|
|
|
|
if ((theObj = document.getElementById("GameSearch")) && firstStart) {
|
|
if (numberOfGames < 2) {
|
|
while (theObj.firstChild) {
|
|
theObj.removeChild(theObj.firstChild);
|
|
}
|
|
} else {
|
|
text = '<FORM ID="searchPgnForm" STYLE="display: inline;" ACTION="javascript:searchPgnGameForm();"><INPUT ID="searchPgnButton" CLASS="searchPgnButton" STYLE="display: inline; ';
|
|
if (tableSize > 0) {
|
|
text += 'width: ' + (tableSize / 4) + 'px; ';
|
|
}
|
|
text += '" TITLE="find games matching the search string (regular expression)" TYPE="submit" VALUE="?"><INPUT ID="searchPgnExpression" CLASS="searchPgnExpression" TITLE="find games matching the search string (regular expression)" TYPE="input" VALUE="" STYLE="display: inline; box-sizing: border-box; -moz-box-sizing: border-box; -webkit-box-sizing: border-box;';
|
|
if (tableSize > 0) {
|
|
text += 'width: ' + (3 * tableSize / 4) + 'px; ';
|
|
}
|
|
text += '" ONFOCUS="disableShortcutKeysAndStoreStatus();" ONBLUR="restoreShortcutKeysStatus();"></FORM>';
|
|
theObj.innerHTML = text;
|
|
theObj = document.getElementById('searchPgnExpression');
|
|
if (theObj) {
|
|
theObj.value = lastSearchPgnExpression;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function startButton(e) {
|
|
if (e.shiftKey) {
|
|
GoToMove(StartPlyVar[CurrentVar] + (CurrentPly <= StartPlyVar[CurrentVar] + 1 ? 0 : 1));
|
|
} else {
|
|
GoToMove(StartPlyVar[0], 0);
|
|
}
|
|
}
|
|
|
|
function backButton(e) {
|
|
if (e.shiftKey) {
|
|
GoToMove(StartPlyVar[CurrentVar]);
|
|
} else {
|
|
GoToMove(CurrentPly - 1);
|
|
}
|
|
}
|
|
|
|
function forwardButton(e) {
|
|
if (e.shiftKey) {
|
|
if (!goToNextVariationSibling()) {
|
|
GoToMove(CurrentPly + 1);
|
|
}
|
|
} else {
|
|
GoToMove(CurrentPly + 1);
|
|
}
|
|
}
|
|
|
|
function endButton(e) {
|
|
if (e.shiftKey) {
|
|
if (CurrentPly === StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]) {
|
|
goToFirstChild();
|
|
} else {
|
|
GoToMove(StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]);
|
|
}
|
|
} else {
|
|
GoToMove(StartPlyVar[0] + PlyNumberVar[0], 0);
|
|
}
|
|
}
|
|
|
|
function clickedBbtn(t, e) {
|
|
switch (t.id) {
|
|
case "startButton":
|
|
startButton(e);
|
|
break;
|
|
case "backButton":
|
|
backButton(e);
|
|
break;
|
|
case "autoplayButton":
|
|
if (e.shiftKey) {
|
|
goToNextVariationSibling();
|
|
} else {
|
|
SwitchAutoPlay();
|
|
}
|
|
break;
|
|
case "forwardButton":
|
|
forwardButton(e);
|
|
break;
|
|
case "endButton":
|
|
endButton(e);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
var basicNAGs = /^[\?!+#\s]+(\s|$)/;
|
|
|
|
function strippedMoveComment(plyNum, varId, addHtmlTags) {
|
|
if (typeof (addHtmlTags) == "undefined") {
|
|
addHtmlTags = false;
|
|
if (typeof (varId) == "undefined") {
|
|
varId = CurrentVar;
|
|
}
|
|
}
|
|
if (!MoveCommentsVar[varId][plyNum]) {
|
|
return "";
|
|
}
|
|
return fixCommentForDisplay(MoveCommentsVar[varId][plyNum]).replace(pgn4webVariationRegExpGlobal, function (m) {
|
|
return variationTextFromTag(m, addHtmlTags);
|
|
}).replace(/\[%[^\]]*\]\s*/g, '').replace(plyNum === StartPlyVar[varId] ? '' : basicNAGs, '').replace(/^\s+$/, '');
|
|
}
|
|
|
|
function basicNAGsMoveComment(plyNum, varId) {
|
|
if (typeof (varId) == "undefined") {
|
|
varId = CurrentVar;
|
|
}
|
|
if (!MoveCommentsVar[varId][plyNum]) {
|
|
return "";
|
|
}
|
|
var thisBasicNAGs = MoveCommentsVar[varId][plyNum].replace(/\[%[^\]]*\]\s*/g, '').match(basicNAGs, '');
|
|
return thisBasicNAGs ? thisBasicNAGs[0].replace(/\s+(?!class=)/gi, '') : '';
|
|
}
|
|
|
|
function variationTextFromTag(variationTag, addHtmlTags) {
|
|
if (typeof (addHtmlTags) == "undefined") {
|
|
addHtmlTags = false;
|
|
}
|
|
var varId = variationTag.replace(pgn4webVariationRegExp, "$1");
|
|
if (isNaN(varId)) {
|
|
myAlert("error: issue parsing variation tag " + variationTag + " in game " + (currentGame + 1), true);
|
|
return "";
|
|
}
|
|
var text = variationTextFromId(varId);
|
|
if (text) {
|
|
if (addHtmlTags) {
|
|
text = '</SPAN>' + text + '<SPAN CLASS="comment">';
|
|
}
|
|
} else {
|
|
text = '';
|
|
}
|
|
return text;
|
|
}
|
|
|
|
var variationTextDepth, printedComment, printedVariation;
|
|
|
|
function variationTextFromId(varId) {
|
|
var punctChars = ",.;:!?", thisComment;
|
|
|
|
if (isNaN(varId) || varId < 0 || varId >= numberOfVars || typeof (StartPlyVar[varId]) == "undefined" || typeof (PlyNumberVar[varId]) == "undefined") {
|
|
myAlert("error: issue parsing variation id " + varId + " in game " + (currentGame + 1), true);
|
|
return "";
|
|
}
|
|
var text = ++variationTextDepth ? ('<SPAN CLASS="variation">' + (printedVariation ? ' ' : '') + (variationTextDepth > 1 ? '(' : '[')) + '</SPAN>' : '';
|
|
printedVariation = false;
|
|
for (var ii = StartPlyVar[varId]; ii < StartPlyVar[varId] + PlyNumberVar[varId]; ii++) {
|
|
printedComment = false;
|
|
if (commentsIntoMoveText && (thisComment = strippedMoveComment(ii, varId, true))) {
|
|
if (commentsOnSeparateLines && variationTextDepth === 0 && ii > StartPlyVar[varId]) {
|
|
text += '<DIV CLASS="comment" STYLE="line-height: 33%;"> </DIV>';
|
|
}
|
|
if (printedVariation) {
|
|
if (punctChars.indexOf(thisComment.charAt(0)) == -1) {
|
|
text += '<SPAN CLASS="variation"> </SPAN>';
|
|
}
|
|
} else {
|
|
printedVariation = variationTextDepth > 0;
|
|
}
|
|
text += '<SPAN CLASS="comment">' + thisComment + '</SPAN>';
|
|
if (commentsOnSeparateLines && variationTextDepth === 0) {
|
|
text += '<DIV CLASS="comment" STYLE="line-height: 33%;"> </DIV>';
|
|
}
|
|
printedComment = true;
|
|
}
|
|
if (printedComment || printedVariation) {
|
|
text += '<SPAN CLASS="variation"> </SPAN>';
|
|
}
|
|
printedVariation = true;
|
|
|
|
text += printMoveText(ii, varId, (variationTextDepth > 0), ((printedComment) || (ii == StartPlyVar[varId])), true);
|
|
}
|
|
if (commentsIntoMoveText && (thisComment = strippedMoveComment(StartPlyVar[varId] + PlyNumberVar[varId], varId, true))) {
|
|
if (commentsOnSeparateLines && variationTextDepth === 0) {
|
|
text += '<DIV CLASS="comment" STYLE="line-height: 33%;"> </DIV>';
|
|
}
|
|
if (printedVariation && (punctChars.indexOf(thisComment.charAt(0)) == -1)) {
|
|
text += '<SPAN CLASS="comment notranslate"> </SPAN>';
|
|
}
|
|
text += '<SPAN CLASS="comment">' + thisComment + '</SPAN>';
|
|
printedComment = true;
|
|
}
|
|
text += variationTextDepth-- ? ('<SPAN CLASS="variation">' + (variationTextDepth ? ')' : ']') + '</SPAN>') : '';
|
|
printedVariation = true;
|
|
return text;
|
|
}
|
|
|
|
function printMoveText(thisPly, thisVar, isVar, hasLeadingNum, hasId) {
|
|
if (typeof (thisVar) == "undefined") {
|
|
thisVar = CurrentVar;
|
|
}
|
|
if (typeof (thisPly) == "undefined") {
|
|
thisPly = CurrentPly;
|
|
}
|
|
var text = '';
|
|
|
|
if (thisVar >= numberOfVars || thisPly < StartPlyVar[thisVar] || thisPly > StartPlyVar[thisVar] + PlyNumberVar[thisVar]) {
|
|
return text;
|
|
}
|
|
|
|
var moveCount = Math.floor(thisPly / 2) + 1;
|
|
if (thisPly % 2 === 0) {
|
|
text += '<SPAN CLASS="' + (isVar ? 'variation' : 'move') + ' notranslate">' + moveCount + '. </SPAN>';
|
|
} else {
|
|
if (hasLeadingNum) {
|
|
text += '<SPAN CLASS="' + (isVar ? 'variation' : 'move') + ' notranslate">' + moveCount + '... </SPAN>';
|
|
}
|
|
}
|
|
var jj = thisPly + 1;
|
|
text += '<A HREF="javascript:void(0);" ONCLICK="GoToMove(' + jj + ', ' + thisVar + ');" CLASS="' + (isVar ? 'variation' : 'move') + ' notranslate" ';
|
|
if (hasId) {
|
|
text += 'ID="Var' + thisVar + 'Mv' + jj + '" ';
|
|
}
|
|
text += 'ONFOCUS="this.blur();">' + MovesVar[thisVar][thisPly];
|
|
if (commentsIntoMoveText) {
|
|
text += basicNAGsMoveComment(jj, thisVar);
|
|
}
|
|
text += '</A>';
|
|
|
|
return text;
|
|
}
|
|
|
|
|
|
// undocumented API to autoscroll gane text to show current move
|
|
// enable with "enableAutoScrollToCurrentMove(objId)", with objId as the game text container object id
|
|
// add onresize="autoScrollToCurrentMoveIfEnabled" to the body tag for autoscrolling on page resize
|
|
|
|
function enableAutoScrollToCurrentMove(objId) {
|
|
autoScrollToCurrentMove_objId = objId;
|
|
}
|
|
|
|
function disableAutoScrollToCurrentMove() {
|
|
autoScrollToCurrentMove_objId = "";
|
|
}
|
|
|
|
function toggleAutoScrollToCurrentMove(objId) {
|
|
autoScrollToCurrentMove_objId = autoScrollToCurrentMove_objId ? "" : objId;
|
|
}
|
|
|
|
var autoScrollToCurrentMove_objId = "";
|
|
|
|
function autoScrollToCurrentMoveIfEnabled() {
|
|
autoScrollToCurrentMove(autoScrollToCurrentMove_objId);
|
|
}
|
|
|
|
function objOffsetVeryTop(obj) {
|
|
for (var offset = obj.offsetTop; obj = obj.offsetParent; /* */) {
|
|
offset += obj.offsetTop + obj.clientTop;
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
function autoScrollToCurrentMove(objId) {
|
|
if (!objId) {
|
|
return;
|
|
}
|
|
var theContainerObj = document.getElementById(objId);
|
|
if (theContainerObj) {
|
|
if (CurrentPly == StartPly) {
|
|
theContainerObj.scrollTop = 0;
|
|
} else {
|
|
var theMoveObj = document.getElementById('Var' + CurrentVar + 'Mv' + CurrentPly);
|
|
if (theMoveObj) {
|
|
var theContainerObjOffsetVeryTop = objOffsetVeryTop(theContainerObj);
|
|
var theMoveObjOffsetVeryTop = objOffsetVeryTop(theMoveObj);
|
|
if ((theMoveObjOffsetVeryTop + theMoveObj.offsetHeight > theContainerObjOffsetVeryTop + theContainerObj.scrollTop + theContainerObj.clientHeight) || (theMoveObjOffsetVeryTop < theContainerObjOffsetVeryTop + theContainerObj.scrollTop)) {
|
|
theContainerObj.scrollTop = theMoveObjOffsetVeryTop - theContainerObjOffsetVeryTop;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
function FlipBoard() {
|
|
var oldHighlightOption = highlightOption;
|
|
if (oldHighlightOption) {
|
|
SetHighlight(false);
|
|
}
|
|
IsRotated = !IsRotated;
|
|
PrintHTML(true);
|
|
RefreshBoard();
|
|
if (oldHighlightOption) {
|
|
SetHighlight(true);
|
|
}
|
|
}
|
|
|
|
function RefreshBoard() {
|
|
for (var jj = 0; jj < 8; ++jj) {
|
|
for (var ii = 0; ii < 8; ++ii) {
|
|
if (Board[jj][ii] === 0) {
|
|
SetImage(jj, ii, ClearImg.src);
|
|
}
|
|
}
|
|
}
|
|
for (jj = 0; jj < 2; ++jj) {
|
|
for (ii = 0; ii < 16; ++ii) {
|
|
if (PieceType[jj][ii] > 0) {
|
|
SetImage(PieceCol[jj][ii], PieceRow[jj][ii], PieceImg[jj][PieceType[jj][ii]].src);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function SetAutoPlay(vv) {
|
|
isAutoPlayOn = vv;
|
|
|
|
if (AutoPlayInterval) {
|
|
clearTimeout(AutoPlayInterval);
|
|
AutoPlayInterval = null;
|
|
}
|
|
|
|
if (isAutoPlayOn) {
|
|
if (document.GameButtonsForm) {
|
|
if (document.GameButtonsForm.AutoPlay) {
|
|
document.GameButtonsForm.AutoPlay.value = "=";
|
|
document.GameButtonsForm.AutoPlay.title = "toggle autoplay (stop)";
|
|
document.GameButtonsForm.AutoPlay.className = "buttonControlStop";
|
|
}
|
|
}
|
|
if (CurrentPly < StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]) {
|
|
AutoPlayInterval = setTimeout("MoveForward(1)", Delay);
|
|
} else {
|
|
if (autoplayNextGame && (CurrentVar === 0)) {
|
|
AutoPlayInterval = setTimeout("AutoplayNextGame()", Delay);
|
|
} else {
|
|
SetAutoPlay(false);
|
|
}
|
|
}
|
|
} else {
|
|
if (document.GameButtonsForm) {
|
|
if (document.GameButtonsForm.AutoPlay) {
|
|
document.GameButtonsForm.AutoPlay.value = "+";
|
|
document.GameButtonsForm.AutoPlay.title = "toggle autoplay (start)";
|
|
document.GameButtonsForm.AutoPlay.className = "buttonControlPlay";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
var minAutoplayDelay = 500;
|
|
var maxAutoplayDelay = 300000;
|
|
|
|
function setCustomAutoplayDelay() {
|
|
var newDelaySec = prompt("Enter custom autoplay delay, in seconds, between " + (minAutoplayDelay / 1000) + " and " + (maxAutoplayDelay / 1000) + ":", Math.floor(Delay / 100) / 10);
|
|
if (!isNaN(newDelaySec = parseInt(newDelaySec, 10))) {
|
|
SetAutoplayDelayAndStart(newDelaySec * 1000);
|
|
}
|
|
}
|
|
|
|
function SetAutoplayDelay(vv) {
|
|
if (isNaN(vv = parseInt(vv, 10))) {
|
|
return;
|
|
}
|
|
Delay = Math.min(Math.max(vv, minAutoplayDelay), maxAutoplayDelay);
|
|
}
|
|
|
|
function SetAutoplayDelayAndStart(vv) {
|
|
MoveForward(1);
|
|
SetAutoplayDelay(vv);
|
|
SetAutoPlay(true);
|
|
}
|
|
|
|
function SetLiveBroadcast(delay, alertFlag, demoFlag, stepFlag, endlessFlag) {
|
|
LiveBroadcastDelay = delay; // zero delay: no live broadcast
|
|
LiveBroadcastAlert = (alertFlag === true);
|
|
LiveBroadcastDemo = (demoFlag === true);
|
|
LiveBroadcastSteppingMode = (stepFlag === true);
|
|
LiveBroadcastEndlessMode = (endlessFlag === true);
|
|
setG7A6B6H7boardShortcuts();
|
|
}
|
|
|
|
function SetImage(col, row, image) {
|
|
var trow = IsRotated ? row : 7 - row;
|
|
var tcol = IsRotated ? 7 - col : col;
|
|
var theObj = document.getElementById('img_' + 'tcol' + tcol + 'trow' + trow);
|
|
if ((theObj) && (theObj.src != image)) {
|
|
theObj.src = image;
|
|
}
|
|
}
|
|
|
|
function SetImagePath(path) {
|
|
ImagePath = path;
|
|
}
|
|
|
|
function SwitchAutoPlay() {
|
|
if (!isAutoPlayOn) {
|
|
MoveForward(1);
|
|
}
|
|
SetAutoPlay(!isAutoPlayOn);
|
|
}
|
|
|
|
function StoreMove(thisPly) {
|
|
|
|
HistVar[thisPly + 1] = CurrentVar;
|
|
|
|
if (HistNull[thisPly] = mvIsNull) {
|
|
return;
|
|
}
|
|
|
|
// "square from" history
|
|
HistPieceId[0][thisPly] = mvPieceId;
|
|
HistCol[0][thisPly] = PieceCol[MoveColor][mvPieceId];
|
|
HistRow[0][thisPly] = PieceRow[MoveColor][mvPieceId];
|
|
HistType[0][thisPly] = PieceType[MoveColor][mvPieceId];
|
|
|
|
// "square to" history
|
|
HistCol[2][thisPly] = mvToCol;
|
|
HistRow[2][thisPly] = mvToRow;
|
|
|
|
if (mvIsCastling) {
|
|
HistPieceId[1][thisPly] = castleRook;
|
|
HistCol[1][thisPly] = PieceCol[MoveColor][castleRook];
|
|
HistRow[1][thisPly] = PieceRow[MoveColor][castleRook];
|
|
HistType[1][thisPly] = PieceType[MoveColor][castleRook];
|
|
} else if (mvCapturedId >= 0) {
|
|
HistPieceId[1][thisPly] = mvCapturedId + 16;
|
|
HistCol[1][thisPly] = PieceCol[1 - MoveColor][mvCapturedId];
|
|
HistRow[1][thisPly] = PieceRow[1 - MoveColor][mvCapturedId];
|
|
HistType[1][thisPly] = PieceType[1 - MoveColor][mvCapturedId];
|
|
} else {
|
|
HistPieceId[1][thisPly] = -1;
|
|
}
|
|
|
|
// update "square from" and captured square (not "square to" for en-passant)
|
|
Board[PieceCol[MoveColor][mvPieceId]][PieceRow[MoveColor][mvPieceId]] = 0;
|
|
|
|
// mark captured piece
|
|
if (mvCapturedId >= 0) {
|
|
PieceType[1 - MoveColor][mvCapturedId] = -1;
|
|
PieceMoveCounter[1 - MoveColor][mvCapturedId]++;
|
|
Board[PieceCol[1 - MoveColor][mvCapturedId]][PieceRow[1 - MoveColor][mvCapturedId]] = 0;
|
|
}
|
|
|
|
// update piece arrays: promotion changes piece type
|
|
PieceType[MoveColor][mvPieceId] = mvPieceOnTo;
|
|
PieceMoveCounter[MoveColor][mvPieceId]++;
|
|
PieceCol[MoveColor][mvPieceId] = mvToCol;
|
|
PieceRow[MoveColor][mvPieceId] = mvToRow;
|
|
if (mvIsCastling) {
|
|
PieceMoveCounter[MoveColor][castleRook]++;
|
|
PieceCol[MoveColor][castleRook] = mvToCol == 2 ? 3 : 5;
|
|
PieceRow[MoveColor][castleRook] = mvToRow;
|
|
}
|
|
|
|
// update board
|
|
Board[mvToCol][mvToRow] = PieceType[MoveColor][mvPieceId] * (1 - 2 * MoveColor);
|
|
if (mvIsCastling) {
|
|
Board[PieceCol[MoveColor][castleRook]][PieceRow[MoveColor][castleRook]] = PieceType[MoveColor][castleRook] * (1 - 2 * MoveColor);
|
|
}
|
|
return;
|
|
}
|
|
|
|
function UndoMove(thisPly) {
|
|
|
|
if (HistNull[thisPly]) {
|
|
return;
|
|
}
|
|
|
|
// moved piece back to original square
|
|
var chgPiece = HistPieceId[0][thisPly];
|
|
Board[PieceCol[MoveColor][chgPiece]][PieceRow[MoveColor][chgPiece]] = 0;
|
|
|
|
Board[HistCol[0][thisPly]][HistRow[0][thisPly]] = HistType[0][thisPly] * (1 - 2 * MoveColor);
|
|
PieceType[MoveColor][chgPiece] = HistType[0][thisPly];
|
|
PieceCol[MoveColor][chgPiece] = HistCol[0][thisPly];
|
|
PieceRow[MoveColor][chgPiece] = HistRow[0][thisPly];
|
|
PieceMoveCounter[MoveColor][chgPiece]--;
|
|
|
|
// castling: rook back to original square
|
|
chgPiece = HistPieceId[1][thisPly];
|
|
if ((chgPiece >= 0) && (chgPiece < 16)) {
|
|
Board[PieceCol[MoveColor][chgPiece]][PieceRow[MoveColor][chgPiece]] = 0;
|
|
Board[HistCol[1][thisPly]][HistRow[1][thisPly]] = HistType[1][thisPly] * (1 - 2 * MoveColor);
|
|
PieceType[MoveColor][chgPiece] = HistType[1][thisPly];
|
|
PieceCol[MoveColor][chgPiece] = HistCol[1][thisPly];
|
|
PieceRow[MoveColor][chgPiece] = HistRow[1][thisPly];
|
|
PieceMoveCounter[MoveColor][chgPiece]--;
|
|
}
|
|
|
|
// capture: captured piece back to original square
|
|
chgPiece -= 16;
|
|
if ((chgPiece >= 0) && (chgPiece < 16)) {
|
|
Board[PieceCol[1 - MoveColor][chgPiece]][PieceRow[1 - MoveColor][chgPiece]] = 0;
|
|
Board[HistCol[1][thisPly]][HistRow[1][thisPly]] = HistType[1][thisPly] * (2 * MoveColor - 1);
|
|
PieceType[1 - MoveColor][chgPiece] = HistType[1][thisPly];
|
|
PieceCol[1 - MoveColor][chgPiece] = HistCol[1][thisPly];
|
|
PieceRow[1 - MoveColor][chgPiece] = HistRow[1][thisPly];
|
|
PieceMoveCounter[1 - MoveColor][chgPiece]--;
|
|
}
|
|
}
|
|
|
|
function Color(nn) {
|
|
if (nn < 0) {
|
|
return 1;
|
|
}
|
|
if (nn > 0) {
|
|
return 0;
|
|
}
|
|
return 2;
|
|
}
|
|
|
|
function sign(nn) {
|
|
if (nn > 0) {
|
|
return 1;
|
|
}
|
|
if (nn < 0) {
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
function SquareOnBoard(col, row) {
|
|
return col >= 0 && col <= 7 && row >= 0 && row <= 7;
|
|
}
|
|
|
|
var pgn4webMaxTouches = 0;
|
|
var pgn4webOngoingTouches = new Array();
|
|
|
|
function pgn4webOngoingTouchIndexById(needle) {
|
|
var id;
|
|
for (var ii = 0; ii < pgn4webOngoingTouches.length; ii++) {
|
|
id = pgn4webOngoingTouches[ii].identifier;
|
|
if (pgn4webOngoingTouches[ii].identifier === needle) {
|
|
return ii;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
function pgn4web_handleTouchStart(e) {
|
|
e.stopPropagation();
|
|
for (var ii = 0; ii < e.changedTouches.length; ii++) {
|
|
pgn4webMaxTouches++;
|
|
pgn4webOngoingTouches.push({
|
|
identifier: e.changedTouches[ii].identifier,
|
|
clientX: e.changedTouches[ii].clientX,
|
|
clientY: e.changedTouches[ii].clientY
|
|
});
|
|
}
|
|
}
|
|
|
|
function pgn4web_handleTouchMove(e) {
|
|
e.stopPropagation();
|
|
e.preventDefault();
|
|
}
|
|
|
|
function pgn4web_handleTouchEnd(e) {
|
|
e.stopPropagation();
|
|
var jj;
|
|
for (var ii = 0; ii < e.changedTouches.length; ii++) {
|
|
if ((jj = pgn4webOngoingTouchIndexById(e.changedTouches[ii].identifier)) != -1) {
|
|
if (pgn4webOngoingTouches.length == 1) {
|
|
customFunctionOnTouch(e.changedTouches[ii].clientX - pgn4webOngoingTouches[jj].clientX, e.changedTouches[ii].clientY - pgn4webOngoingTouches[jj].clientY);
|
|
pgn4webMaxTouches = 0;
|
|
}
|
|
pgn4webOngoingTouches.splice(jj, 1);
|
|
}
|
|
}
|
|
clearSelectedText();
|
|
}
|
|
|
|
function pgn4web_handleTouchCancel(e) {
|
|
e.stopPropagation();
|
|
var jj;
|
|
for (var ii = 0; ii < e.changedTouches.length; ii++) {
|
|
if ((jj = pgn4webOngoingTouchIndexById(e.changedTouches[ii].identifier)) != -1) {
|
|
pgn4webOngoingTouches.splice(jj, 1);
|
|
if (pgn4webOngoingTouches.length === 0) {
|
|
pgn4webMaxTouches = 0;
|
|
}
|
|
}
|
|
}
|
|
clearSelectedText();
|
|
}
|
|
|
|
function pgn4web_initTouchEvents() {
|
|
var theObj = document.getElementById("GameBoard");
|
|
if (theObj && touchEventEnabled) {
|
|
simpleAddEvent(theObj, "touchstart", pgn4web_handleTouchStart);
|
|
simpleAddEvent(theObj, "touchmove", pgn4web_handleTouchMove);
|
|
simpleAddEvent(theObj, "touchend", pgn4web_handleTouchEnd);
|
|
simpleAddEvent(theObj, "touchleave", pgn4web_handleTouchEnd);
|
|
simpleAddEvent(theObj, "touchcancel", pgn4web_handleTouchCancel);
|
|
}
|
|
}
|
|
|
|
var waitForDoubleLeftTouchTimer = null;
|
|
|
|
function customFunctionOnTouch(deltaX, deltaY) {
|
|
if (Math.max(Math.abs(deltaX), Math.abs(deltaY)) < 13) {
|
|
return;
|
|
}
|
|
if (Math.abs(deltaY) > 1.5 * Math.abs(deltaX)) { // vertical up or down
|
|
if (numberOfGames > 1) {
|
|
if ((currentGame === 0) && (deltaY < 0)) {
|
|
Init(numberOfGames - 1);
|
|
} else if ((currentGame === numberOfGames - 1) && (deltaY > 0)) {
|
|
Init(0);
|
|
} else {
|
|
Init(currentGame + sign(deltaY));
|
|
}
|
|
}
|
|
} else if (Math.abs(deltaX) > 1.5 * Math.abs(deltaY)) {
|
|
if (deltaX > 0) { // horizontal right
|
|
if (isAutoPlayOn) {
|
|
GoToMove(StartPlyVar[CurrentVar] + PlyNumberVar[CurrentVar]);
|
|
} else {
|
|
SwitchAutoPlay();
|
|
}
|
|
} else { // horizontal left
|
|
if (isAutoPlayOn && !waitForDoubleLeftTouchTimer) {
|
|
SwitchAutoPlay();
|
|
} else {
|
|
if (waitForDoubleLeftTouchTimer) {
|
|
clearTimeout(waitForDoubleLeftTouchTimer);
|
|
waitForDoubleLeftTouchTimer = null;
|
|
}
|
|
if ((LiveBroadcastDelay > 0) && (CurrentVar === 0) && (CurrentPly === StartPly + PlyNumber)) {
|
|
waitForDoubleLeftTouchTimer = setTimeout("waitForDoubleLeftTouchTimer = null;", 900);
|
|
replayPreviousMoves(6);
|
|
} else {
|
|
GoToMove(StartPlyVar[CurrentVar] + (((CurrentPly <= StartPlyVar[CurrentVar] + 1) || (CurrentVar === 0)) ? 0 : 1));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var touchGestures_helpActions = ["chessboard top-down swipe", "chessboard bottom-up swipe", "chessboard left-right swipe", "chessboard right-left swipe"];
|
|
var touchGestures_helpText = ["load next game, cycling through", "load previous game, cyclig through", "start autoplay; if autoplay already active: go to variation end or to game end", "stop autoplay; if autoplay not active: go to variation start, then to parent variation, then to game start; if at last move of live broadcast: replay up to 6 previous half-moves, then autoplay forward"];
|
|
|
|
var touchEventEnabled = true;
|
|
|
|
function SetTouchEventEnabled(onOff) {
|
|
touchEventEnabled = onOff;
|
|
}
|
|
|
|
function clearSelectedText() {
|
|
if (window.getSelection) {
|
|
if (window.getSelection().empty) {
|
|
window.getSelection().empty();
|
|
} else if (window.getSelection().removeAllRanges) {
|
|
window.getSelection().removeAllRanges();
|
|
}
|
|
} else if (document.selection && document.selection.empty) {
|
|
document.selection.empty();
|
|
}
|
|
}
|
|
|
|
function simpleHtmlentities(text) {
|
|
return text.replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">");
|
|
}
|
|
|
|
function simpleHtmlentitiesDecode(text) {
|
|
return text.replace(/>/g, ">").replace(/</g, "<").replace(/&/g, "&");
|
|
}
|
|
|