public/javascripts/components/game.js

   1 // Game logic on a variant page
   2 Vue.component('my-game', {
   3     props: ["gameId"], //to find the game in storage (assumption: it exists)
   4     data: function() {
   5         return {
   6
   7             // TODO: merge next variables into "game"
   8             // if oppid == "computer" then mode = "computer" (otherwise human)
   9             myid: "", //our ID, always set
  10         //this.myid = localStorage.getItem("myid")
  11             oppid: "", //opponent ID in case of HH game
  12             score: "*", //'*' means 'unfinished'
  13             mycolor: "w",
  14             fromChallenge: false, //if true, show chat during game
  15
  16             conn: null, //socket connection
  17             oppConnected: false,
  18             seek: false,
  19             fenStart: "",
  20             pgnTxt: "",
  21             // sound level: 0 = no sound, 1 = sound only on newgame, 2 = always
  22             sound: parseInt(localStorage["sound"] || "2"),
  23             // Web worker to play computer moves without freezing interface:
  24             compWorker: new Worker('/javascripts/playCompMove.js'),
  25             timeStart: undefined, //time when computer starts thinking
  26         };
  27     },
  28     computed: {
  29         mode: function() {
  30             return (this.game.oppid == "computer" ? "computer" ? "human");
  31         },
  32         showChat: function() {
  33             return this.mode=='human' &&
  34                 (this.game.score != '*' || this.game.fromChallenge);
  35         },
  36         showMoves: function() {
  37             return window.innerWidth >= 768;
  38         },
  39     },
  40     // Modal end of game, and then sub-components
  41     template: `
  42         <div class="col-sm-12 col-md-10 col-md-offset-1 col-lg-8 col-lg-offset-2">
  43             <input id="modal-eog" type="checkbox" class="modal"/>
  44             <div role="dialog" aria-labelledby="eogMessage">
  45                 <div class="card smallpad small-modal text-center">
  46                     <label for="modal-eog" class="modal-close"></label>
  47                     <h3 id="eogMessage" class="section">{{ endgameMessage }}</h3>
  48                 </div>
  49             </div>
  50
  51             <my-chat v-if="showChat"></my-chat>
  52             //TODO: connection + turn indicators en haut à droite (superposé au menu)
  53             <my-board></my-board>
  54             // TODO: controls: abort, clear, resign, draw (avec confirm box)
  55             // et si partie terminée : (mode analyse) just clear, back / play
  56             // + flip button toujours disponible
  57
  58             <div id="pgn-div" class="section-content">
  59                 <a id="download" href: "#"></a>
  60                 <button id="downloadBtn" @click="download">
  61                     {{ translations["Download PGN"] }}
  62                 </button>
  63
  64             <my-move-list v-if="showMoves"></my-move-list>
  65         </div>
  66     `,
  67     computed: {
  68         endgameMessage: function() {
  69             let eogMessage = "Unfinished";
  70             switch (this.game.score)
  71             {
  72                 case "1-0":
  73                     eogMessage = translations["White win"];
  74                     break;
  75                 case "0-1":
  76                     eogMessage = translations["Black win"];
  77                     break;
  78                 case "1/2":
  79                     eogMessage = translations["Draw"];
  80                     break;
  81             }
  82             return eogMessage;
  83         },
  84     },
  85     created: function() {
  86         const url = socketUrl;
  87         this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant._id);
  88 //      const socketOpenListener = () => {
  89 //      };
  90
  91 // TODO: after game, archive in indexedDB
  92
  93         // TODO: this events listener is central. Refactor ? How ?
  94         const socketMessageListener = msg => {
  95             const data = JSON.parse(msg.data);
  96             let L = undefined;
  97             switch (data.code)
  98             {
  99                 case "newmove": //..he played!
 100                     this.play(data.move, (variant.name!="Dark" ? "animate" : null));
 101                     break;
 102                 case "pong": //received if we sent a ping (game still alive on our side)
 103                     if (this.gameId != data.gameId)
 104                         break; //games IDs don't match: definitely over...
 105                     this.oppConnected = true;
 106                     // Send our "last state" informations to opponent
 107                     L = this.vr.moves.length;
 108                     this.conn.send(JSON.stringify({
 109                         code: "lastate",
 110                         oppid: this.oppid,
 111                         gameId: this.gameId,
 112                         lastMove: (L>0?this.vr.moves[L-1]:undefined),
 113                         movesCount: L,
 114                     }));
 115                     break;
 116                 case "lastate": //got opponent infos about last move
 117                     L = this.vr.moves.length;
 118                     if (this.gameId != data.gameId)
 119                         break; //games IDs don't match: nothing we can do...
 120                     // OK, opponent still in game (which might be over)
 121                     if (this.score != "*")
 122                     {
 123                         // We finished the game (any result possible)
 124                         this.conn.send(JSON.stringify({
 125                             code: "lastate",
 126                             oppid: data.oppid,
 127                             gameId: this.gameId,
 128                             score: this.score,
 129                         }));
 130                     }
 131                     else if (!!data.score) //opponent finished the game
 132                         this.endGame(data.score);
 133                     else if (data.movesCount < L)
 134                     {
 135                         // We must tell last move to opponent
 136                         this.conn.send(JSON.stringify({
 137                             code: "lastate",
 138                             oppid: this.oppid,
 139                             gameId: this.gameId,
 140                             lastMove: this.vr.moves[L-1],
 141                             movesCount: L,
 142                         }));
 143                     }
 144                     else if (data.movesCount > L) //just got last move from him
 145                         this.play(data.lastMove, "animate");
 146                     break;
 147                 case "resign": //..you won!
 148                     this.endGame(this.mycolor=="w"?"1-0":"0-1");
 149                     break;
 150                 // TODO: also use (dis)connect info to count online players?
 151                 case "connect":
 152                 case "disconnect":
 153                     if (this.mode=="human" && this.oppid == data.id)
 154                         this.oppConnected = (data.code == "connect");
 155                     if (this.oppConnected && this.score != "*")
 156                     {
 157                         // Send our name to the opponent, in case of he hasn't it
 158                         this.conn.send(JSON.stringify({
 159                             code:"myname", name:this.myname, oppid: this.oppid}));
 160                     }
 161                     break;
 162             }
 163         };
 164
 165         const socketCloseListener = () => {
 166             this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant._id);
 167             //this.conn.addEventListener('open', socketOpenListener);
 168             this.conn.addEventListener('message', socketMessageListener);
 169             this.conn.addEventListener('close', socketCloseListener);
 170         };
 171         //this.conn.onopen = socketOpenListener;
 172         this.conn.onmessage = socketMessageListener;
 173         this.conn.onclose = socketCloseListener;
 174
 175
 176         // Listen to keyboard left/right to navigate in game
 177         // TODO: also mouse wheel !
 178         document.onkeydown = event => {
 179             if (["human","computer"].includes(this.mode) &&
 180                 !!this.vr && this.vr.moves.length > 0 && [37,39].includes(event.keyCode))
 181             {
 182                 event.preventDefault();
 183                 if (event.keyCode == 37) //Back
 184                     this.undo();
 185                 else //Forward (39)
 186                     this.play();
 187             }
 188         };
 189
 190
 191         // Computer moves web worker logic: (TODO: also for observers in HH games)
 192         this.compWorker.postMessage(["scripts",variant.name]);
 193         const self = this;
 194         this.compWorker.onmessage = function(e) {
 195             let compMove = e.data;
 196             if (!compMove)
 197                 return; //may happen if MarseilleRules and subTurn==2 (TODO: a bit ugly...)
 198             if (!Array.isArray(compMove))
 199                 compMove = [compMove]; //to deal with MarseilleRules
 200             // TODO: imperfect attempt to avoid ghost move:
 201             compMove.forEach(m => { m.computer = true; });
 202             // (first move) HACK: small delay to avoid selecting elements
 203             // before they appear on page:
 204             const delay = Math.max(500-(Date.now()-self.timeStart), 0);
 205             setTimeout(() => {
 206                 const animate = (variant.name!="Dark" ? "animate" : null);
 207                 if (self.mode == "computer") //warning: mode could have changed!
 208                     self.play(compMove[0], animate);
 209                 if (compMove.length == 2)
 210                     setTimeout( () => {
 211                         if (self.mode == "computer")
 212                             self.play(compMove[1], animate);
 213                     }, 750);
 214             }, delay);
 215         }
 216     },
 217
 218
 219     methods: {
 220         download: function() {
 221             // Variants may have special PGN structure (so next function isn't defined here)
 222             const content = V.GetPGN(this.moves, this.mycolor, this.score, this.fenStart, this.mode);
 223             // Prepare and trigger download link
 224             let downloadAnchor = document.getElementById("download");
 225             downloadAnchor.setAttribute("download", "game.pgn");
 226             downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 227             downloadAnchor.click();
 228         },
 229         showScoreMsg: function() {
 230             let modalBox = document.getElementById("modal-eog");
 231             modalBox.checked = true;
 232             setTimeout(() => { modalBox.checked = false; }, 2000);
 233         },
 234         endGame: function(score) {
 235             this.score = score;
 236             if (["human","computer"].includes(this.mode))
 237             {
 238                 const prefix = (this.mode=="computer" ? "comp-" : "");
 239                 localStorage.setItem(prefix+"score", score);
 240             }
 241             this.showScoreMsg();
 242             if (this.mode == "human" && this.oppConnected)
 243             {
 244                 // Send our nickname to opponent
 245                 this.conn.send(JSON.stringify({
 246                     code:"myname", name:this.myname, oppid:this.oppid}));
 247             }
 248             this.cursor = this.vr.moves.length; //to navigate in finished game
 249         },
 250         resign: function(e) {
 251             this.getRidOfTooltip(e.currentTarget);
 252             if (this.mode == "human" && this.oppConnected)
 253             {
 254                 try {
 255                     this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
 256                 } catch (INVALID_STATE_ERR) {
 257                     return; //socket is not ready (and not yet reconnected)
 258                 }
 259             }
 260             this.endGame(this.mycolor=="w"?"0-1":"1-0");
 261         },
 262         playComputerMove: function() {
 263             this.timeStart = Date.now();
 264             this.compWorker.postMessage(["askmove"]);
 265         },
 266         // OK, these last functions can stay here (?!)
 267         play: function(move, programmatic) {
 268             if (!move)
 269             {
 270                 // Navigate after game is over
 271                 if (this.cursor >= this.moves.length)
 272                     return; //already at the end
 273                 move = this.moves[this.cursor++];
 274             }
 275             if (!!programmatic) //computer or human opponent
 276                 return this.animateMove(move);
 277             // Not programmatic, or animation is over
 278             if (this.mode == "human" && this.vr.turn == this.mycolor)
 279                 this.conn.send(JSON.stringify({code:"newmove", move:move, oppid:this.oppid}));
 280
 281
 282             // TODO: play move, and stack it on this.moves (if a move was provided; otherwise just navigate)
 283
 284             if (this.score == "*") //TODO: I don't like this if()
 285             {
 286                 // Emergency check, if human game started "at the same time"
 287                 // TODO: robustify this...
 288                 if (this.mode == "human" && !!move.computer)
 289                     return;
 290                 this.vr.play(move, "ingame");
 291                 // Is opponent in check?
 292                 this.incheck = this.vr.getCheckSquares(this.vr.turn);
 293                 if (this.sound == 2)
 294                     new Audio("/sounds/move.mp3").play().catch(err => {});
 295                 if (this.mode == "computer")
 296                 {
 297                     // Send the move to web worker (TODO: including his own moves?!)
 298                     this.compWorker.postMessage(["newmove",move]);
 299                 }
 300                 const eog = this.vr.getCurrentScore();
 301                 if (eog != "*")
 302                 {
 303                     if (["human","computer"].includes(this.mode))
 304                         this.endGame(eog);
 305                     else
 306                     {
 307                         // Just show score on screen (allow undo)
 308                         this.score = eog;
 309                         this.showScoreMsg();
 310                     }
 311                 }
 312             }
 313 //          else
 314 //          {
 315 //              VariantRules.PlayOnBoard(this.vr.board, move);
 316 //              this.$forceUpdate(); //TODO: ?!
 317 //          }
 318             if (["human","computer","friend"].includes(this.mode))
 319                 this.updateStorage(); //after our moves and opponent moves
 320             if (this.mode == "computer" && this.vr.turn != this.mycolor && this.score == "*")
 321                 this.playComputerMove();
 322         },
 323         // TODO: merge two next functions
 324         undo: function() {
 325             // Navigate after game is over
 326             if (this.cursor == 0)
 327                 return; //already at the beginning
 328             if (this.cursor == this.vr.moves.length)
 329                 this.incheck = []; //in case of...
 330             const move = this.vr.moves[--this.cursor];
 331             VariantRules.UndoOnBoard(this.vr.board, move);
 332             this.$forceUpdate(); //TODO: ?!
 333         },
 334         undoInGame: function() {
 335             const lm = this.vr.lastMove;
 336             if (!!lm)
 337             {
 338                 this.vr.undo(lm);
 339                 if (this.sound == 2)
 340                     new Audio("/sounds/undo.mp3").play().catch(err => {});
 341                 this.incheck = this.vr.getCheckSquares(this.vr.turn);
 342             }
 343         },
 344     },
 345 })
 346
 347 //// TODO: keep moves list here
 348 //get lastMove()
 349 //  {
 350 //      const L = this.moves.length;
 351 //      return (L>0 ? this.moves[L-1] : null);
 352 //  }
 353 //
 354 //// here too:
 355 //          move.notation = this.getNotation(move);
 356 //TODO: confirm dialog with "opponent offers draw", avec possible bouton "prevent future offers" + bouton "proposer nulle"
 357 //+ bouton "abort" avec score == "?" + demander confirmation pour toutes ces actions,
 358 //comme sur lichess