public/javascripts/components/game.js

   1 // TODO: envoyer juste "light move", sans FEN ni notation ...etc
   2 // TODO: also "observers" prop, we should send moves to them too (in a web worker ? webRTC ?)
   3
   4 // Game logic on a variant page: 3 modes, analyze, computer or human
   5 Vue.component('my-game', {
   6     // gameId: to find the game in storage (assumption: it exists)
   7     props: ["gameId","mode","allowChat","allowMovelist"],
   8     data: function() {
   9         return {
  10             // if oppid == "computer" then mode = "computer" (otherwise human)
  11             myid: "", //our ID, always set
  12             //this.myid = localStorage.getItem("myid")
  13             oppid: "", //opponent ID in case of HH game
  14             score: "*", //'*' means 'unfinished'
  15             mycolor: "w",
  16             conn: null, //socket connection (et WebRTC connection ?!)
  17             oppConnected: false, //TODO?
  18             pgnTxt: "",
  19             // sound level: 0 = no sound, 1 = sound only on newgame, 2 = always
  20             sound: parseInt(localStorage["sound"] || "2"),
  21             // Web worker to play computer moves without freezing interface:
  22             compWorker: new Worker('/javascripts/playCompMove.js'),
  23             timeStart: undefined, //time when computer starts thinking
  24             vr: null, //VariantRules object, describing the game state + rules
  25         };
  26     },
  27     computed: {
  28         showChat: function() {
  29             return this.allowChat && this.mode=='human' && this.score != '*';
  30         },
  31         showMoves: function() {
  32             return this.allowMovelist && window.innerWidth >= 768;
  33         },
  34         showFen: function() {
  35             return variant.name != "Dark" || this.score != "*";
  36         },
  37     },
  38     // Modal end of game, and then sub-components
  39     // TODO: provide chat parameters (connection, players ID...)
  40     // and alwo moveList parameters (just moves ?)
  41     // TODO: connection + turn indicators en haut à droite (superposé au menu)
  42     // TODO: controls: abort, clear, resign, draw (avec confirm box)
  43     // et si partie terminée : (mode analyse) just clear, back / play
  44     // + flip button toujours disponible
  45     // gotoMove : vr = new VariantRules(fen stocké dans le coup [TODO])
  46     template: `
  47         <div class="col-sm-12 col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
  48             <input id="modal-eog" type="checkbox" class="modal"/>
  49             <div role="dialog" aria-labelledby="eogMessage">
  50                 <div class="card smallpad small-modal text-center">
  51                     <label for="modal-eog" class="modal-close">
  52                     </label>
  53                     <h3 id="eogMessage" class="section">
  54                         {{ endgameMessage }}
  55                     </h3>
  56                 </div>
  57             </div>
  58             <my-chat v-if="showChat">
  59             </my-chat>
  60             <my-board v-bind:vr="vr">
  61             </my-board>
  62             <div v-show="showFen" id="fen-div" class="section-content">
  63                 <p id="fen-string" class="text-center">
  64                     {{ vr.getFen() }}
  65                 </p>
  66             </div>
  67             <div id="pgn-div" class="section-content">
  68                 <a id="download" href: "#">
  69                 </a>
  70                 <button id="downloadBtn" @click="download">
  71                     {{ translations["Download PGN"] }}
  72                 </button>
  73             </div>
  74             <my-move-list v-if="showMoves">
  75             </my-move-list>
  76         </div>
  77     `,
  78     created: function() {
  79         const url = socketUrl;
  80         this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant._id);
  81         // TODO: after game, archive in indexedDB
  82         // TODO: this events listener is central. Refactor ? How ?
  83         const socketMessageListener = msg => {
  84             const data = JSON.parse(msg.data);
  85             let L = undefined;
  86             switch (data.code)
  87             {
  88                 case "newmove": //..he played!
  89                     this.play(data.move, (variant.name!="Dark" ? "animate" : null));
  90                     break;
  91                 case "pong": //received if we sent a ping (game still alive on our side)
  92                     if (this.gameId != data.gameId)
  93                         break; //games IDs don't match: definitely over...
  94                     this.oppConnected = true;
  95                     // Send our "last state" informations to opponent
  96                     L = this.vr.moves.length;
  97                     this.conn.send(JSON.stringify({
  98                         code: "lastate",
  99                         oppid: this.oppid,
 100                         gameId: this.gameId,
 101                         lastMove: (L>0?this.vr.moves[L-1]:undefined),
 102                         movesCount: L,
 103                     }));
 104                     break;
 105                 case "lastate": //got opponent infos about last move
 106                     L = this.vr.moves.length;
 107                     if (this.gameId != data.gameId)
 108                         break; //games IDs don't match: nothing we can do...
 109                     // OK, opponent still in game (which might be over)
 110                     if (this.score != "*")
 111                     {
 112                         // We finished the game (any result possible)
 113                         this.conn.send(JSON.stringify({
 114                             code: "lastate",
 115                             oppid: data.oppid,
 116                             gameId: this.gameId,
 117                             score: this.score,
 118                         }));
 119                     }
 120                     else if (!!data.score) //opponent finished the game
 121                         this.endGame(data.score);
 122                     else if (data.movesCount < L)
 123                     {
 124                         // We must tell last move to opponent
 125                         this.conn.send(JSON.stringify({
 126                             code: "lastate",
 127                             oppid: this.oppid,
 128                             gameId: this.gameId,
 129                             lastMove: this.vr.moves[L-1],
 130                             movesCount: L,
 131                         }));
 132                     }
 133                     else if (data.movesCount > L) //just got last move from him
 134                         this.play(data.lastMove, "animate");
 135                     break;
 136                 case "resign": //..you won!
 137                     this.endGame(this.mycolor=="w"?"1-0":"0-1");
 138                     break;
 139                 // TODO: also use (dis)connect info to count online players?
 140                 case "connect":
 141                 case "disconnect":
 142                     if (this.mode=="human" && this.oppid == data.id)
 143                         this.oppConnected = (data.code == "connect");
 144                     if (this.oppConnected && this.score != "*")
 145                     {
 146                         // Send our name to the opponent, in case of he hasn't it
 147                         this.conn.send(JSON.stringify({
 148                             code:"myname", name:this.myname, oppid: this.oppid}));
 149                     }
 150                     break;
 151             }
 152         };
 153
 154         const socketCloseListener = () => {
 155             this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant._id);
 156             this.conn.addEventListener('message', socketMessageListener);
 157             this.conn.addEventListener('close', socketCloseListener);
 158         };
 159         this.conn.onmessage = socketMessageListener;
 160         this.conn.onclose = socketCloseListener;
 161
 162         // Computer moves web worker logic: (TODO: also for observers in HH games)
 163         this.compWorker.postMessage(["scripts",variant.name]);
 164         const self = this;
 165         this.compWorker.onmessage = function(e) {
 166             let compMove = e.data;
 167             if (!compMove)
 168                 return; //may happen if MarseilleRules and subTurn==2 (TODO: a bit ugly...)
 169             if (!Array.isArray(compMove))
 170                 compMove = [compMove]; //to deal with MarseilleRules
 171             // TODO: imperfect attempt to avoid ghost move:
 172             compMove.forEach(m => { m.computer = true; });
 173             // (first move) HACK: small delay to avoid selecting elements
 174             // before they appear on page:
 175             const delay = Math.max(500-(Date.now()-self.timeStart), 0);
 176             setTimeout(() => {
 177                 const animate = (variant.name!="Dark" ? "animate" : null);
 178                 if (self.mode == "computer") //warning: mode could have changed!
 179                     self.play(compMove[0], animate);
 180                 if (compMove.length == 2)
 181                     setTimeout( () => {
 182                         if (self.mode == "computer")
 183                             self.play(compMove[1], animate);
 184                     }, 750);
 185             }, delay);
 186         }
 187     },
 188     //TODO: conn pourrait être une prop, donnée depuis variant.js
 189     //dans variant.js (plutôt room.js) conn gère aussi les challenges
 190     // Puis en webRTC, repenser tout ça.
 191     methods: {
 192         setEndgameMessage: function(score) {
 193             let eogMessage = "Undefined";
 194             switch (score)
 195             {
 196                 case "1-0":
 197                     eogMessage = translations["White win"];
 198                     break;
 199                 case "0-1":
 200                     eogMessage = translations["Black win"];
 201                     break;
 202                 case "1/2":
 203                     eogMessage = translations["Draw"];
 204                     break;
 205                 case "?":
 206                     eogMessage = "Unfinished";
 207                     break;
 208             }
 209             this.endgameMessage = eogMessage;
 210         },
 211         download: function() {
 212             // Variants may have special PGN structure (so next function isn't defined here)
 213             // TODO: get fenStart from local game (using gameid)
 214             const content = V.GetPGN(this.moves, this.mycolor, this.score, fenStart, this.mode);
 215             // Prepare and trigger download link
 216             let downloadAnchor = document.getElementById("download");
 217             downloadAnchor.setAttribute("download", "game.pgn");
 218             downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 219             downloadAnchor.click();
 220         },
 221         showScoreMsg: function(score) {
 222             this.setEndgameMessage(score);
 223             let modalBox = document.getElementById("modal-eog");
 224             modalBox.checked = true;
 225             setTimeout(() => { modalBox.checked = false; }, 2000);
 226         },
 227         endGame: function(score) {
 228             this.score = score;
 229             if (["human","computer"].includes(this.mode))
 230             {
 231                 const prefix = (this.mode=="computer" ? "comp-" : "");
 232                 localStorage.setItem(prefix+"score", score);
 233             }
 234             this.showScoreMsg(score);
 235             if (this.mode == "human" && this.oppConnected)
 236             {
 237                 // Send our nickname to opponent
 238                 this.conn.send(JSON.stringify({
 239                     code:"myname", name:this.myname, oppid:this.oppid}));
 240             }
 241             // TODO: what about cursor ?
 242             //this.cursor = this.vr.moves.length; //to navigate in finished game
 243         },
 244         resign: function(e) {
 245             this.getRidOfTooltip(e.currentTarget);
 246             if (this.mode == "human" && this.oppConnected)
 247             {
 248                 try {
 249                     this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
 250                 } catch (INVALID_STATE_ERR) {
 251                     return; //socket is not ready (and not yet reconnected)
 252                 }
 253             }
 254             this.endGame(this.mycolor=="w"?"0-1":"1-0");
 255         },
 256         playComputerMove: function() {
 257             this.timeStart = Date.now();
 258             this.compWorker.postMessage(["askmove"]);
 259         },
 260         animateMove: function(move) {
 261             let startSquare = document.getElementById(this.getSquareId(move.start));
 262             let endSquare = document.getElementById(this.getSquareId(move.end));
 263             let rectStart = startSquare.getBoundingClientRect();
 264             let rectEnd = endSquare.getBoundingClientRect();
 265             let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
 266             let movingPiece =
 267                 document.querySelector("#" + this.getSquareId(move.start) + " > img.piece");
 268             // HACK for animation (with positive translate, image slides "under background")
 269             // Possible improvement: just alter squares on the piece's way...
 270             squares = document.getElementsByClassName("board");
 271             for (let i=0; i<squares.length; i++)
 272             {
 273                 let square = squares.item(i);
 274                 if (square.id != this.getSquareId(move.start))
 275                     square.style.zIndex = "-1";
 276             }
 277             movingPiece.style.transform = "translate(" + translation.x + "px," +
 278                 translation.y + "px)";
 279             movingPiece.style.transitionDuration = "0.2s";
 280             movingPiece.style.zIndex = "3000";
 281             setTimeout( () => {
 282                 for (let i=0; i<squares.length; i++)
 283                     squares.item(i).style.zIndex = "auto";
 284                 movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 285                 this.play(move); //TODO: plutôt envoyer message "please play"
 286             }, 250);
 287         },
 288         play: function(move, programmatic) {
 289             if (!!programmatic) //computer or human opponent
 290                 return this.animateMove(move);
 291             // Not programmatic, or animation is over
 292             if (!move.notation)
 293                 move.notation = this.vr.getNotation(move);
 294             this.vr.play(move);
 295             if (!move.fen)
 296                 move.fen = this.vr.getFen();
 297             if (this.sound == 2)
 298                 new Audio("/sounds/move.mp3").play().catch(err => {});
 299             if (this.mode == "human")
 300             {
 301                 updateStorage(move); //after our moves and opponent moves
 302                 if (this.vr.turn == this.userColor)
 303                     this.conn.send(JSON.stringify({code:"newmove", move:move, oppid:this.oppid}));
 304             }
 305             else if (this.mode == "computer")
 306             {
 307                 // Send the move to web worker (including his own moves)
 308                 this.compWorker.postMessage(["newmove",move]);
 309             }
 310             if (this.score == "*" || this.mode == "analyze")
 311             {
 312                 // Stack move on movesList
 313                 this.moves.push(move);
 314             }
 315             // Is opponent in check?
 316             this.incheck = this.vr.getCheckSquares(this.vr.turn);
 317             const score = this.vr.getCurrentScore();
 318             if (score != "*")
 319             {
 320                 if (["human","computer"].includes(this.mode))
 321                     this.endGame(score);
 322                 else //just show score on screen (allow undo)
 323                     this.showScoreMsg(score);
 324                 // TODO: notify end of game (give score)
 325             }
 326             else if (this.mode == "computer" && this.vr.turn != this.userColor)
 327                 this.playComputerMove();
 328         },
 329         undo: function(move) {
 330             this.vr.undo(move);
 331             if (this.sound == 2)
 332                 new Audio("/sounds/undo.mp3").play().catch(err => {});
 333             this.incheck = this.vr.getCheckSquares(this.vr.turn);
 334             if (this.mode == "analyze")
 335                 this.moves.pop();
 336         },
 337     },
 338 })
 339 // cursor + ........
 340 //TODO: confirm dialog with "opponent offers draw", avec possible bouton "prevent future offers" + bouton "proposer nulle"
 341 //+ bouton "abort" avec score == "?" + demander confirmation pour toutes ces actions,
 342 //comme sur lichess
 343 //
 344 //TODO: quand partie terminée (ci-dessus) passer partie dans indexedDB