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