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