client/src/components/Game.vue

   1 <template lang="pug">
   2 .row
   3   .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
   4     input#modalEog.modal(type="checkbox")
   5     div(role="dialog" aria-labelledby="eogMessage")
   6       .card.smallpad.small-modal.text-center
   7         label.modal-close(for="modalEog")
   8         h3#eogMessage.section {{ endgameMessage }}
   9       //Chat(:opponents="opponents" :people="people")
  10       Board(:vr="vr" :last-move="lastMove" :mode="mode" :user-color="mycolor"
  11         :orientation="orientation" :vname="variant.name" @play-move="play")
  12       .button-group
  13         button(@click="() => play()") Play
  14         button(@click="() => undo()") Undo
  15         button(@click="flip") Flip
  16         button(@click="gotoBegin") GotoBegin
  17         button(@click="gotoEnd") GotoEnd
  18       .button-group(v-if="mode=='human'")
  19         button(@click="offerDraw") Draw
  20         button(@click="abortGame") Abort
  21         button(@click="resign") Resign
  22       div(v-if="mode=='human' && subMode=='corr'")
  23         textarea(v-show="score=='*' && vr.turn==mycolor" v-model="corrMsg")
  24         div(v-show="cursor>=0") {{ moves[cursor].message }}
  25       .section-content(v-if="showFen && !!vr" id="fen-div")
  26         p#fenString.text-center {{ vr.getFen() }}
  27       #pgnDiv.section-content
  28         a#download(href="#")
  29         .button-group
  30           button#downloadBtn(@click="download") {{ st.tr["Download PGN"] }}
  31           button Import game
  32       //MoveList(v-if="showMoves"
  33         :moves="moves" :cursor="cursor" @goto-move="gotoMove")
  34 </template>
  35
  36 <script>
  37 // Game logic on a variant page: 3 modes, analyze, computer or human
  38 // TODO: envoyer juste "light move", sans FEN ni notation ...etc
  39 // TODO: if I'm an observer and player(s) disconnect/reconnect, how to find me ?
  40 //      onClick :: ask full game to remote player, and register as an observer in game
  41 //      (use gameId to communicate)
  42 //      on landing on game :: if gameId not found locally, check remotely
  43 //      ==> il manque un param dans game : "remoteId"
  44 // TODO: import store, st
  45 import Board from "@/components/Board.vue";
  46 //import Chat from "@/components/Chat.vue";
  47 //import MoveList from "@/components/MoveList.vue";
  48 import { store } from "@/store";
  49
  50 import { getSquareId } from "@/utils/squareId";
  51
  52 import Worker from 'worker-loader!@/playCompMove';
  53
  54 export default {
  55   name: 'my-game',
  56   components: {
  57     Board,
  58   },
  59   // gameId: to find the game in storage (assumption: it exists)
  60   // fen: to start from a FEN without identifiers (analyze mode)
  61   // subMode: "auto" (game comp vs comp) or "corr" (correspondance game),
  62   // or "examine" (after human game: TODO)
  63   // gameRef in URL hash (listen for changes)
  64   props: ["gidOrFen","mode","subMode","variant"],
  65   data: function() {
  66     return {
  67       st: store.state,
  68       // Web worker to play computer moves without freezing interface:
  69       timeStart: undefined, //time when computer starts thinking
  70       vr: null, //VariantRules object, describing the game state + rules
  71       endgameMessage: "",
  72       orientation: "w",
  73       lockCompThink: false, //to avoid some ghost moves
  74       myname: store.state.user.name, //may be anonymous (thus no name)
  75       opponents: {}, //filled later (potentially 2 or 3 opponents)
  76       drawOfferSent: false, //did I just ask for draw?
  77       people: [], //observers
  78       score: "*", //'*' means 'unfinished'
  79       // userColor: given by gameId, or fen in problems mode (if no game Id)...
  80       mycolor: "w",
  81       fenStart: "",
  82       moves: [], //all moves played in current game
  83       cursor: -1, //index of the move just played
  84       lastMove: null,
  85       compWorker: null,
  86     };
  87   },
  88   watch: {
  89     gidOrFen: function() {
  90       // (Security) No effect if a computer move is in progress:
  91       if (this.mode == "computer" && this.lockCompThink)
  92         return this.$emit("computer-think");
  93       this.launchGame();
  94     },
  95     variant: function(newVar) {
  96     },
  97   },
  98   computed: {
  99     showMoves: function() {
 100       return true;
 101       //return window.innerWidth >= 768;
 102     },
 103     showFen: function() {
 104       return this.variant.name != "Dark" || this.score != "*";
 105     },
 106   },
 107   // Modal end of game, and then sub-components
 108   created: function() {
 109     if (!!this.gidOrFen)
 110       this.launchGame();
 111     // TODO: if I'm one of the players in game, then:
 112     // Send ping to server (answer pong if opponent[s] is connected)
 113     if (true && !!this.conn && !!this.gameRef)
 114     {
 115       this.conn.onopen = () => {
 116         this.conn.send(JSON.stringify({
 117           code:"ping",oppid:this.oppid,gameId:this.gameRef.id}));
 118       };
 119     }
 120     // TODO: also handle "draw accepted" (use opponents array?)
 121     // --> must give this info also when sending lastState...
 122     // and, if all players agree then OK draw (end game ...etc)
 123     const socketMessageListener = msg => {
 124       const data = JSON.parse(msg.data);
 125       let L = undefined;
 126       switch (data.code)
 127       {
 128         case "newmove": //..he played!
 129           this.play(data.move, this.variant.name!="Dark" ? "animate" : null);
 130           break;
 131         case "pong": //received if we sent a ping (game still alive on our side)
 132           if (this.gameRef.id != data.gameId)
 133             break; //games IDs don't match: definitely over...
 134           this.oppConnected = true;
 135           // Send our "last state" informations to opponent(s)
 136           L = this.vr.moves.length;
 137           Object.keys(this.opponents).forEach(oid => {
 138             this.conn.send(JSON.stringify({
 139               code: "lastate",
 140               oppid: oid,
 141               gameId: this.gameRef.id,
 142               lastMove: (L>0?this.vr.moves[L-1]:undefined),
 143               movesCount: L,
 144             }));
 145           });
 146           break;
 147         // TODO: refactor this, because at 3 or 4 players we may have missed 2 or 3 moves (not just one)
 148         case "lastate": //got opponent infos about last move
 149           L = this.vr.moves.length;
 150           if (this.gameRef.id != data.gameId)
 151             break; //games IDs don't match: nothing we can do...
 152           // OK, opponent still in game (which might be over)
 153           if (this.score != "*")
 154           {
 155             // We finished the game (any result possible)
 156             this.conn.send(JSON.stringify({
 157               code: "lastate",
 158               oppid: data.oppid,
 159               gameId: this.gameRef.id,
 160               score: this.score,
 161             }));
 162           }
 163           else if (!!data.score) //opponent finished the game
 164             this.endGame(data.score);
 165           else if (data.movesCount < L)
 166           {
 167             // We must tell last move to opponent
 168             this.conn.send(JSON.stringify({
 169               code: "lastate",
 170               oppid: this.opponent.id,
 171               gameId: this.gameRef.id,
 172               lastMove: this.vr.moves[L-1],
 173               movesCount: L,
 174             }));
 175           }
 176           else if (data.movesCount > L) //just got last move from him
 177             this.play(data.lastMove, "animate");
 178           break;
 179         case "resign": //..you won!
 180           this.endGame(this.mycolor=="w"?"1-0":"0-1");
 181           break;
 182         // TODO: also use (dis)connect info to count online players?
 183         case "connect":
 184         case "disconnect":
 185           if (this.mode=="human")
 186           {
 187             const online = (data.code == "connect");
 188             // If this is an opponent ?
 189             if (!!this.opponents[data.id])
 190               this.opponents[data.id].online = online;
 191             else
 192             {
 193               // Or an observer ?
 194               if (!online)
 195                 delete this.people[data.id];
 196               else
 197                 this.people[data.id] = data.name;
 198             }
 199           }
 200           break;
 201       }
 202     };
 203     const socketCloseListener = () => {
 204       this.conn.addEventListener('message', socketMessageListener);
 205       this.conn.addEventListener('close', socketCloseListener);
 206     };
 207     if (!!this.conn)
 208     {
 209       this.conn.onmessage = socketMessageListener;
 210       this.conn.onclose = socketCloseListener;
 211     }
 212     // Computer moves web worker logic: (TODO: also for observers in HH games ?)
 213     this.compWorker = new Worker(); //'/javascripts/playCompMove.js'),
 214     this.compWorker.onmessage = e => {
 215       this.lockCompThink = true; //to avoid some ghost moves
 216       let compMove = e.data;
 217       if (!Array.isArray(compMove))
 218         compMove = [compMove]; //to deal with MarseilleRules
 219       // Small delay for the bot to appear "more human"
 220       const delay = Math.max(500-(Date.now()-this.timeStart), 0);
 221       setTimeout(() => {
 222         const animate = this.variant.name != "Dark";
 223         this.play(compMove[0], animate);
 224         if (compMove.length == 2)
 225           setTimeout( () => { this.play(compMove[1], animate); }, 750);
 226         else //250 == length of animation (TODO: should be a constant somewhere)
 227           setTimeout( () => this.lockCompThink = false, 250);
 228       }, delay);
 229     }
 230   },
 231   // dans variant.js (plutôt room.js) conn gère aussi les challenges
 232   // et les chats dans chat.js. Puis en webRTC, repenser tout ça.
 233   methods: {
 234     offerDraw: function() {
 235       if (!confirm("Offer draw?"))
 236         return;
 237       // Stay in "draw offer sent" state until next move is played
 238       this.drawOfferSent = true;
 239       if (this.subMode == "corr")
 240       {
 241         // TODO: set drawOffer on in game (how ?)
 242       }
 243       else //live game
 244       {
 245         this.opponents.forEach(o => {
 246           if (!!o.online)
 247           {
 248             try {
 249               this.conn.send(JSON.stringify({code: "draw", oppid: o.id}));
 250             } catch (INVALID_STATE_ERR) {
 251               return;
 252             }
 253           }
 254         });
 255       }
 256     },
 257     // + conn handling: "draw" message ==> agree for draw (if we have "drawOffered" at true)
 258     receiveDrawOffer: function() {
 259       //if (...)
 260       // TODO: ignore if preventDrawOffer is set; otherwise show modal box with option "prevent future offers"
 261       // if accept: send message "draw"
 262     },
 263     abortGame: function() {
 264       if (!confirm("Abort the game?"))
 265         return;
 266       //+ bouton "abort" avec score == "?" + demander confirmation pour toutes ces actions,
 267       //send message: "gameOver" avec score "?"
 268     },
 269     resign: function(e) {
 270       if (!confirm("Resign the game?"))
 271         return;
 272       if (this.mode == "human" && this.oppConnected(this.oppid))
 273       {
 274         try {
 275           this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
 276         } catch (INVALID_STATE_ERR) {
 277           return;
 278         }
 279       }
 280       this.endGame(this.mycolor=="w"?"0-1":"1-0");
 281     },
 282     launchGame: async function() {
 283       const vModule = await import("@/variants/" + this.variant.name + ".js");
 284       window.V = vModule.VariantRules;
 285       this.compWorker.postMessage(["scripts",this.variant.name]);
 286       if (this.gidOrFen.indexOf('/') >= 0)
 287         this.newGameFromFen(this.gidOrFen);
 288       else
 289         this.loadGame(this.gidOrFen);
 290     },
 291     newGameFromFen: function(fen) {
 292       this.vr = new V(fen);
 293       this.moves = [];
 294       this.cursor = -1;
 295       this.fenStart = fen;
 296       this.score = "*";
 297       if (this.mode == "analyze")
 298       {
 299         this.mycolor = V.ParseFen(fen).turn;
 300         this.orientation = this.mycolor;
 301       }
 302       else if (this.mode == "computer") //only other alternative (HH with gameId)
 303       {
 304         this.mycolor = (Math.random() < 0.5 ? "w" : "b");
 305         this.orientation = this.mycolor;
 306         this.compWorker.postMessage(["init",fen]);
 307         if (this.mycolor != "w" || this.subMode == "auto")
 308           this.playComputerMove();
 309       }
 310     },
 311     loadGame: function(gid) {
 312       // TODO: ask game to remote peer if this.remoteId is set
 313       // (or just if game not found locally)
 314       // NOTE: if it's a corr game, ask it from server
 315       const game = getGameFromStorage(gid); //, this.gameRef.uid); //uid may be blank
 316       this.opponent.id = game.oppid; //opponent ID in case of running HH game
 317       this.opponent.name = game.oppname; //maye be blank (if anonymous)
 318       this.score = game.score;
 319       this.mycolor = game.mycolor;
 320       this.fenStart = game.fenStart;
 321       this.moves = game.moves;
 322       this.cursor = game.moves.length-1;
 323       this.lastMove = (game.moves.length > 0 ? game.moves[this.cursor] : null);
 324     },
 325     setEndgameMessage: function(score) {
 326       let eogMessage = "Undefined";
 327       switch (score)
 328       {
 329         case "1-0":
 330           eogMessage = translations["White win"];
 331           break;
 332         case "0-1":
 333           eogMessage = translations["Black win"];
 334           break;
 335         case "1/2":
 336           eogMessage = translations["Draw"];
 337           break;
 338         case "?":
 339           eogMessage = "Unfinished";
 340           break;
 341       }
 342       this.endgameMessage = eogMessage;
 343     },
 344     download: function() {
 345       const content = this.getPgn();
 346       // Prepare and trigger download link
 347       let downloadAnchor = document.getElementById("download");
 348       downloadAnchor.setAttribute("download", "game.pgn");
 349       downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 350       downloadAnchor.click();
 351     },
 352     getPgn: function() {
 353       let pgn = "";
 354       pgn += '[Site "vchess.club"]\n';
 355       const opponent = (this.mode=="human" ? "Anonymous" : "Computer");
 356       pgn += '[Variant "' + this.variant.name + '"]\n';
 357       pgn += '[Date "' + getDate(new Date()) + '"]\n';
 358       const whiteName = ["human","computer"].includes(this.mode)
 359         ? (this.mycolor=='w'?'Myself':opponent)
 360         : "analyze";
 361       const blackName = ["human","computer"].includes(this.mode)
 362         ? (this.mycolor=='b'?'Myself':opponent)
 363         : "analyze";
 364       pgn += '[White "' + whiteName + '"]\n';
 365       pgn += '[Black "' + blackName + '"]\n';
 366       pgn += '[Fen "' + this.fenStart + '"]\n';
 367       pgn += '[Result "' + this.score + '"]\n\n';
 368       let counter = 1;
 369       let i = 0;
 370       while (i < this.moves.length)
 371       {
 372         pgn += (counter++) + ".";
 373         for (let color of ["w","b"])
 374         {
 375           let move = "";
 376           while (i < this.moves.length && this.moves[i].color == color)
 377             move += this.moves[i++].notation[0] + ",";
 378           move = move.slice(0,-1); //remove last comma
 379           pgn += move + (i < this.moves.length-1 ? " " : "");
 380         }
 381       }
 382       return pgn + "\n";
 383     },
 384     showScoreMsg: function(score) {
 385       this.setEndgameMessage(score);
 386       let modalBox = document.getElementById("modal-eog");
 387       modalBox.checked = true;
 388       setTimeout(() => { modalBox.checked = false; }, 2000);
 389     },
 390     endGame: function(score) {
 391       this.score = score;
 392       this.showScoreMsg(score);
 393       if (this.mode == "human")
 394         localStorage["score"] = score;
 395       this.$emit("game-over");
 396     },
 397     oppConnected: function(uid) {
 398       return this.opponents.any(o => o.id == uidi && o.online);
 399     },
 400     playComputerMove: function() {
 401       this.timeStart = Date.now();
 402       this.compWorker.postMessage(["askmove"]);
 403     },
 404     animateMove: function(move) {
 405       let startSquare = document.getElementById(getSquareId(move.start));
 406       let endSquare = document.getElementById(getSquareId(move.end));
 407       let rectStart = startSquare.getBoundingClientRect();
 408       let rectEnd = endSquare.getBoundingClientRect();
 409       let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
 410       let movingPiece =
 411         document.querySelector("#" + getSquareId(move.start) + " > img.piece");
 412       // HACK for animation (with positive translate, image slides "under background")
 413       // Possible improvement: just alter squares on the piece's way...
 414       const squares = document.getElementsByClassName("board");
 415       for (let i=0; i<squares.length; i++)
 416       {
 417         let square = squares.item(i);
 418         if (square.id != getSquareId(move.start))
 419           square.style.zIndex = "-1";
 420       }
 421       movingPiece.style.transform = "translate(" + translation.x + "px," +
 422         translation.y + "px)";
 423       movingPiece.style.transitionDuration = "0.2s";
 424       movingPiece.style.zIndex = "3000";
 425       setTimeout( () => {
 426         for (let i=0; i<squares.length; i++)
 427           squares.item(i).style.zIndex = "auto";
 428         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 429         this.play(move);
 430       }, 250);
 431     },
 432     play: function(move, programmatic) {
 433       let navigate = !move;
 434       // Forbid playing outside analyze mode when cursor isn't at moves.length-1
 435       // (except if we receive opponent's move, human or computer)
 436       if (!navigate && this.mode != "analyze" && !programmatic
 437         && this.cursor < this.moves.length-1)
 438       {
 439         return;
 440       }
 441       if (navigate)
 442       {
 443         if (this.cursor == this.moves.length-1)
 444           return; //no more moves
 445         move = this.moves[this.cursor+1];
 446       }
 447       if (!!programmatic) //computer or (remote) human opponent
 448       {
 449         if (this.cursor < this.moves.length-1)
 450           this.gotoEnd(); //required to play the move
 451         return this.animateMove(move);
 452       }
 453       // Not programmatic, or animation is over
 454       if (this.mode == "human" && this.subMode == "corr" && this.mycolor == this.vr.turn)
 455       {
 456         // TODO: show confirm box "validate move ?"
 457       }
 458       if (!move.notation)
 459         move.notation = this.vr.getNotation(move);
 460       if (!move.color)
 461         move.color = this.vr.turn;
 462       this.vr.play(move);
 463       this.cursor++;
 464       this.lastMove = move;
 465       if (!move.fen)
 466         move.fen = this.vr.getFen();
 467       if (this.st.settings.sound == 2)
 468         new Audio("/sounds/move.mp3").play().catch(err => {});
 469       if (this.mode == "human")
 470       {
 471         updateStorage(move); //after our moves and opponent moves
 472         if (this.vr.turn == this.mycolor)
 473           this.conn.send(JSON.stringify({code:"newmove", move:move, oppid:this.oppid}));
 474       }
 475       else if (this.mode == "computer")
 476       {
 477         // Send the move to web worker (including his own moves)
 478         this.compWorker.postMessage(["newmove",move]);
 479       }
 480       if (!navigate && (this.score == "*" || this.mode == "analyze"))
 481       {
 482         // Stack move on movesList at current cursor
 483         if (this.cursor == this.moves.length)
 484           this.moves.push(move);
 485         else
 486           this.moves = this.moves.slice(0,this.cursor).concat([move]);
 487       }
 488       // Is opponent in check?
 489       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 490       const score = this.vr.getCurrentScore();
 491       if (score != "*")
 492       {
 493         if (["human","computer"].includes(this.mode))
 494           this.endGame(score);
 495         else //just show score on screen (allow undo)
 496           this.showScoreMsg(score);
 497       }
 498       // subTurn condition for Marseille (and Avalanche) rules
 499       else if ((this.mode == "computer" && (!this.vr.subTurn || this.vr.subTurn <= 1))
 500         && (this.subMode == "auto" || this.vr.turn != this.mycolor))
 501       {
 502         this.playComputerMove();
 503       }
 504       // https://vuejs.org/v2/guide/list.html#Caveats (also for undo)
 505       if (navigate)
 506         this.$children[0].$forceUpdate(); //TODO!?
 507     },
 508     undo: function(move) {
 509       let navigate = !move;
 510       if (navigate)
 511       {
 512         if (this.cursor < 0)
 513           return; //no more moves
 514         move = this.moves[this.cursor];
 515       }
 516       this.vr.undo(move);
 517       this.cursor--;
 518       this.lastMove = (this.cursor >= 0 ? this.moves[this.cursor] : undefined);
 519       if (this.st.settings.sound == 2)
 520         new Audio("/sounds/undo.mp3").play().catch(err => {});
 521       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 522       if (navigate)
 523         this.$children[0].$forceUpdate(); //TODO!?
 524       else if (this.mode == "analyze") //TODO: can this happen?
 525         this.moves.pop();
 526     },
 527     gotoMove: function(index) {
 528       this.vr = new V(this.moves[index].fen);
 529       this.cursor = index;
 530       this.lastMove = this.moves[index];
 531     },
 532     gotoBegin: function() {
 533       this.vr = new V(this.fenStart);
 534       this.cursor = -1;
 535       this.lastMove = null;
 536     },
 537     gotoEnd: function() {
 538       this.gotoMove(this.moves.length-1);
 539     },
 540     flip: function() {
 541       this.orientation = V.GetNextCol(this.orientation);
 542     },
 543   },
 544 };
 545 </script>