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