let $ = document; //shortcut /////////////////// // Initialisations // https://stackoverflow.com/a/27747377/12660887 function generateId (len) { const dec2hex = (dec) => dec.toString(16).padStart(2, "0"); let arr = new Uint8Array(len / 2); //len/2 because 2 chars per hex value window.crypto.getRandomValues(arr); //fill with random integers return Array.from(arr, dec2hex).join(''); } // Populate variants dropdown list let dropdown = $.getElementById("selectVariant"); dropdown[0] = new Option("? ? ?", "_random", true, true); dropdown[0].title = "Random variant"; for (let i = 0; i < variants.length; i++) { let newOption = new Option( variants[i].disp || variants[i].name, variants[i].name, false, false); newOption.title = variants[i].desc; dropdown[dropdown.length] = newOption; } // Ensure that I have a socket ID and a name if (!localStorage.getItem("sid")) localStorage.setItem("sid", generateId(8)); if (!localStorage.getItem("name")) localStorage.setItem("name", "@non" + generateId(4)); const sid = localStorage.getItem("sid"); $.getElementById("myName").value = localStorage.getItem("name"); // "Material" input field name let inputName = document.getElementById("myName"); let formField = document.getElementById("ng-name"); const setActive = (active) => { if (active) formField.classList.add("form-field--is-active"); else { formField.classList.remove("form-field--is-active"); inputName.value == '' ? formField.classList.remove("form-field--is-filled") : formField.classList.add("form-field--is-filled"); } }; setActive(true); inputName.onblur = () => setActive(false); inputName.onfocus = () => setActive(true); ///////// // Utils function setName() { // 'onChange' event on name input text field [HTML] localStorage.setItem("name", $.getElementById("myName").value); } // Turn a "tab" on, and "close" all others function toggleVisible(element) { for (elt of document.querySelectorAll("main > div")) { if (elt.id != element) elt.style.display = "none"; else elt.style.display = "block"; } if (element == "boardContainer") { // Avoid smartphone scrolling effects (TODO?) document.querySelector("html").style.overflow = "hidden"; document.body.style.overflow = "hidden"; } else { document.querySelector("html").style.overflow = "visible"; document.body.style.overflow = "visible"; // Workaround "superposed texts" effect: if (element == "newGame") setActive(false); } } let seek_vname; function seekGame() { seek_vname = $.getElementById("selectVariant").value; if (send("seekgame", {vname: seek_vname, name: localStorage.getItem("name")}) ) { toggleVisible("pendingSeek"); } } function cancelSeek() { if (send("cancelseek", {vname: seek_vname})) toggleVisible("newGame"); } function sendRematch(random) { if (send("rematch", {gid: gid, random: !!random})) toggleVisible("pendingRematch"); } function cancelRematch() { if (send("norematch", {gid: gid})) toggleVisible("newGame"); } // Play with a friend (or not ^^) function showNewGameForm() { const vname = $.getElementById("selectVariant").value; if (vname == "_random") alert("Select a variant first"); else { $.getElementById("gameLink").innerHTML = ""; $.getElementById("selectColor").selectedIndex = 0; toggleVisible("newGameForm"); import(`/variants/${vname}/class.js`).then(module => { window.V = module.default; for (const [k, v] of Object.entries(V.Aliases)) window[k] = v; prepareOptions(); }); } } function backToNormalSeek() { toggleVisible("newGame"); } function toggleStyle(event, obj) { const word = obj.innerHTML; options[word] = !options[word]; event.target.classList.toggle("highlight-word"); } let options; function prepareOptions() { options = {}; let optHtml = ""; if (V.Options.select) { optHtml += V.Options.select.map(select => { return `
${gameInfos.vdisp} vs. ${gameInfos.players[oppIndex].name}
WhatsApp / ToClipboard
${link}
`; break; } // Game vs. friend joined after 1 minute (try again!) case "jointoolate": alert("Game no longer available"); break; // Get infos of a running game (already launched) case "gameinfo": initializeGame(obj); break; // Tried to resume a game which is now gone: case "nogame": localStorage.removeItem("gid"); break; // Receive opponent's move: case "newmove": // Basic check: was it really opponent's turn? if (vr.turn == playerColor) break; if (document.hidden) notifyMe("move"); vr.playReceivedMove(obj.moves, () => { if (vr.getCurrentScore(obj.moves) != "*") { localStorage.removeItem("gid"); setTimeout( () => toggleVisible("gameStopped"), 2000 ); } else toggleTurnIndicator(true); }); break; // Opponent stopped game (draw, abort, resign...) case "gameover": toggleVisible("gameStopped"); localStorage.removeItem("gid"); break; // Opponent cancelled rematch: case "closerematch": toggleVisible("newGame"); break; case "filechange": // TODO?: could be more subtle setTimeout(() => location.reload(), 100); break; } }; const handleError = (err) => { if (err.code === "ECONNREFUSED") { removeAllListeners(); alert("Server refused connection. Please reload page later"); } socket.close(); }; const handleClose = () => { setTimeout(() => { removeAllListeners(); connectToWSS(); }, autoReconnectDelay()); }; function removeAllListeners() { socket.removeEventListener("open", tryResumeGame); socket.removeEventListener("message", messageCenter); socket.removeEventListener("error", handleError); socket.removeEventListener("close", handleClose); } function connectToWSS() { socket = new WebSocket(`${Params.socket_server}${Params.socket_path}?sid=${sid}`); socket.addEventListener("open", tryResumeGame); socket.addEventListener("message", messageCenter); socket.addEventListener("error", handleError); socket.addEventListener("close", handleClose); recoAttempt++; } connectToWSS(); /////////// // Playing function toggleTurnIndicator(myTurn) { let indicator = $.getElementById("boardContainer").querySelector(".chessboard"); if (myTurn) indicator.style.outline = "thick solid green"; else indicator.style.outline = "thick solid lightgrey"; } function notifyMe(code) { const doNotify = () => { // NOTE: empty body (TODO?) new Notification("New " + code, { vibrate: [200, 100, 200] }); new Audio("/assets/new_" + code + ".mp3").play(); } if (Notification.permission === "granted") doNotify(); else if (Notification.permission !== "denied") { Notification.requestPermission().then(permission => { if (permission === "granted") doNotify(); }); } } let curMoves = [], lastFen; const afterPlay = (move_s, newTurn, ops) => { if (ops.send) { // Pack into one moves array, then send (if turn changed) if (Array.isArray(move_s)) // Array of simple moves (e.g. Chakart) Array.prototype.push.apply(curMoves, move_s); else // Usual case curMoves.push(move_s); if (newTurn != playerColor) { send("newmove", {gid: gid, moves: curMoves, fen: vr.getFen()}, { retry: true, error: () => alert("Move not sent: reload page") } ); } } if (ops.res && newTurn != playerColor) { toggleTurnIndicator(false); //now all moves are sent and animated const result = vr.getCurrentScore(curMoves); curMoves = []; if (result != "*") { setTimeout(() => { toggleVisible("gameStopped"); send("gameover", {gid: gid}); }, 2000); } } }; let vr = null, playerColor, lastVname = undefined; function initializeGame(obj) { const options = obj.options || {}; import(`/variants/${obj.vname}/class.js`).then(module => { window.V = module.default; for (const [k, v] of Object.entries(V.Aliases)) window[k] = v; if (lastVname != obj.vname) { // Load CSS + unload potential previous one. if (lastVname) document.getElementById(lastVname + "_css").remove(); $.getElementsByTagName("head")[0].insertAdjacentHTML( "beforeend", ``); lastVname = obj.vname; } playerColor = (sid == obj.players[0].sid ? "w" : "b"); // Init + remove potential extra DOM elements from a previous game: document.getElementById("boardContainer").innerHTML = `