client/src/views/Game.vue

   1 <template lang="pug">
   2 main
   3   .row
   4     .col-sm-12.col-md-3
   5       Chat(:players="game.players")
   6     .col-sm-12.col-md-9
   7       BaseGame(:game="game" :vr="vr" ref="basegame"
   8         @newmove="processMove" @gameover="gameOver")
   9   .row
  10     .col-sm-12.col-md-9.col-md-offset-3
  11       .button-group(v-if="game.mode!='analyze' && game.score=='*'")
  12         button(@click="offerDraw") Draw
  13         button(@click="abortGame") Abort
  14         button(@click="resign") Resign
  15       div Names: {{ game.players[0].name }} - {{ game.players[1].name }}
  16       div(v-if="game.score=='*'") Time: {{ virtualClocks[0] }} - {{ virtualClocks[1] }}
  17       div(v-if="game.type=='corr'") {{ game.corrMsg }}
  18       textarea(v-if="game.score=='*'" v-model="corrMsg")
  19 </template>
  20
  21 <script>
  22 import BaseGame from "@/components/BaseGame.vue";
  23 import Chat from "@/components/Chat.vue";
  24 import { store } from "@/store";
  25 import { GameStorage } from "@/utils/gameStorage";
  26 import { ppt } from "@/utils/datetime";
  27 import { extractTime } from "@/utils/timeControl";
  28 import { ArrayFun } from "@/utils/array";
  29
  30 export default {
  31   name: 'my-game',
  32   components: {
  33     BaseGame,
  34     Chat,
  35   },
  36   // gameRef: to find the game in (potentially remote) storage
  37   data: function() {
  38     return {
  39       st: store.state,
  40       gameRef: { //given in URL (rid = remote ID)
  41         id: "",
  42         rid: ""
  43       },
  44       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  45       corrMsg: "", //to send offline messages in corr games
  46       virtualClocks: [0, 0], //initialized with true game.clocks
  47       vr: null, //"variant rules" object initialized from FEN
  48       drawOffer: "", //TODO: use for button style
  49       people: [], //players + observers
  50       lastate: undefined, //used if opponent send lastate before game is ready
  51     };
  52   },
  53   watch: {
  54     "$route": function(to, from) {
  55       this.gameRef.id = to.params["id"];
  56       this.gameRef.rid = to.query["rid"];
  57       this.loadGame();
  58     },
  59     "game.clocks": function(newState) {
  60       if (this.game.moves.length < 2 || this.game.score != "*")
  61       {
  62         // 1st move not completed yet, or game over: freeze time
  63         this.virtualClocks = newState.map(s => ppt(s));
  64         return;
  65       }
  66       const currentTurn = this.vr.turn;
  67       const colorIdx = ["w","b"].indexOf(currentTurn);
  68       let countdown = newState[colorIdx] -
  69         (Date.now() - this.game.initime[colorIdx])/1000;
  70       this.virtualClocks = [0,1].map(i => {
  71         const removeTime = i == colorIdx
  72           ? (Date.now() - this.game.initime[colorIdx])/1000
  73           : 0;
  74         return ppt(newState[i] - removeTime);
  75       });
  76       let clockUpdate = setInterval(() => {
  77         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  78         {
  79           clearInterval(clockUpdate);
  80           if (countdown < 0)
  81             this.setScore(this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  82         }
  83         else
  84         {
  85           // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
  86           this.$set(this.virtualClocks, colorIdx, ppt(Math.max(0, --countdown)));
  87         }
  88       }, 1000);
  89     },
  90   },
  91   // TODO: redundant code with Hall.vue (related to people array)
  92   created: function() {
  93     // Always add myself to players' list
  94     const my = this.st.user;
  95     this.people.push({sid:my.sid, id:my.id, name:my.name});
  96     this.gameRef.id = this.$route.params["id"];
  97     this.gameRef.rid = this.$route.query["rid"]; //may be undefined
  98     // Define socket .onmessage() and .onclose() events:
  99     this.st.conn.onmessage = this.socketMessageListener;
 100     const socketCloseListener = () => {
 101       store.socketCloseListener(); //reinitialize connexion (in store.js)
 102       this.st.conn.addEventListener('message', this.socketMessageListener);
 103       this.st.conn.addEventListener('close', socketCloseListener);
 104     };
 105     this.st.conn.onclose = socketCloseListener;
 106     // Socket init required before loading remote game:
 107     const socketInit = (callback) => {
 108       if (!!this.st.conn && this.st.conn.readyState == 1) //1 == OPEN state
 109         callback();
 110       else //socket not ready yet (initial loading)
 111         this.st.conn.onopen = callback;
 112     };
 113     if (!this.gameRef.rid) //game stored locally or on server
 114       this.loadGame(null, () => socketInit(this.roomInit));
 115     else //game stored remotely: need socket to retrieve it
 116     {
 117       // NOTE: the callback "roomInit" will be lost, so we don't provide it.
 118       // --> It will be given when receiving "fullgame" socket event.
 119       // A more general approach would be to store it somewhere.
 120       socketInit(this.loadGame);
 121     }
 122   },
 123   methods: {
 124     // O.1] Ask server for room composition:
 125     roomInit: function() {
 126       this.st.conn.send(JSON.stringify({code:"pollclients"}));
 127     },
 128     socketMessageListener: function(msg) {
 129       const data = JSON.parse(msg.data);
 130       switch (data.code)
 131       {
 132         case "duplicate":
 133           alert("Warning: duplicate 'offline' connection");
 134           break;
 135         // 0.2] Receive clients list (just socket IDs)
 136         case "pollclients":
 137         {
 138           data.sockIds.forEach(sid => {
 139             this.people.push({sid:sid, id:0, name:""});
 140             // Ask only identity
 141             this.st.conn.send(JSON.stringify({code:"askidentity", target:sid}));
 142           });
 143           break;
 144         }
 145         case "askidentity":
 146         {
 147           // Request for identification: reply if I'm not anonymous
 148           if (this.st.user.id > 0)
 149           {
 150             this.st.conn.send(JSON.stringify(
 151               // people[0] instead of st.user to avoid sending email
 152               {code:"identity", user:this.people[0], target:data.from}));
 153           }
 154           break;
 155         }
 156         case "identity":
 157         {
 158           let player = this.people.find(p => p.sid == data.user.sid);
 159           // NOTE: sometimes player.id fails because player is undefined...
 160           // Probably because the event was meant for Hall?
 161           if (!player)
 162             return;
 163           player.id = data.user.id;
 164           player.name = data.user.name;
 165           // Sending last state only for live games: corr games are complete
 166           if (this.game.type == "live" && this.game.oppsid == player.sid)
 167           {
 168             // Send our "last state" informations to opponent
 169             const L = this.game.moves.length;
 170             let lastMove = (L>0 ? this.game.moves[L-1] : undefined);
 171             if (!!lastMove && this.drawOffer == "sent")
 172               lastMove.draw = true;
 173             this.st.conn.send(JSON.stringify({
 174               code: "lastate",
 175               target: player.sid,
 176               state:
 177               {
 178                 lastMove: lastMove,
 179                 score: this.game.score,
 180                 movesCount: L,
 181                 clocks: this.game.clocks,
 182               }
 183             }));
 184           }
 185           break;
 186         }
 187         case "askgame":
 188           // Send current (live) game
 189           const myGame =
 190           {
 191             // Minimal game informations:
 192             id: this.game.id,
 193             players: this.game.players.map(p => { return {name:p.name}; }),
 194             vid: this.game.vid,
 195             timeControl: this.game.timeControl,
 196           };
 197           this.st.conn.send(JSON.stringify({code:"game",
 198             game:myGame, target:data.from}));
 199           break;
 200         case "newmove":
 201           this.corrMsg = data.move.message; //may be empty
 202           this.$set(this.game, "moveToPlay", data.move); //TODO: Vue3...
 203           break;
 204         case "lastate": //got opponent infos about last move
 205         {
 206           this.lastate = data;
 207           if (!!this.game.type) //game is loaded
 208             this.processLastate();
 209           //else: will be processed when game is ready
 210           break;
 211         }
 212         case "resign":
 213           this.setScore(data.side=="b" ? "1-0" : "0-1", "Resign");
 214           break;
 215         case "abort":
 216           this.setScore("?", "Abort");
 217           break;
 218         case "draw":
 219           this.setScore("1/2", "Mutual agreement");
 220           break;
 221         case "drawoffer":
 222           this.drawOffer = "received"; //TODO: observers don't know who offered draw
 223           break;
 224         case "askfullgame":
 225           this.st.conn.send(JSON.stringify({code:"fullgame", game:this.game, target:data.from}));
 226           break;
 227         case "fullgame":
 228           // Callback "roomInit" to poll clients only after game is loaded
 229           this.loadGame(data.game, this.roomInit);
 230           break;
 231         case "connect":
 232         {
 233           this.people.push({name:"", id:0, sid:data.from});
 234           this.st.conn.send(JSON.stringify({code:"askidentity", target:data.from}));
 235           break;
 236         }
 237         case "disconnect":
 238           ArrayFun.remove(this.people, p => p.sid == data.from);
 239           break;
 240       }
 241     },
 242     // lastate was received, but maybe game wasn't ready yet:
 243     processLastate: function() {
 244       const data = this.lastate;
 245       this.lastate = undefined; //security...
 246       const L = this.game.moves.length;
 247       if (data.movesCount > L)
 248       {
 249         // Just got last move from him
 250         this.$set(this.game, "moveToPlay", data.lastMove);
 251         if (data.score != "*" && this.game.score == "*")
 252         {
 253           // Opponent resigned or aborted game, or accepted draw offer
 254           // (this is not a stalemate or checkmate)
 255           this.setScore(data.score, "Opponent action");
 256         }
 257         this.game.clocks = data.clocks; //TODO: check this?
 258         if (!!data.lastMove.draw)
 259           this.drawOffer = "received";
 260       }
 261     },
 262     setScore: function(score, message) {
 263       this.game.scoreMsg = message;
 264       this.$set(this.game, "score", score); //TODO: Vue3...
 265     },
 266     offerDraw: function() {
 267       if (this.drawOffer == "received")
 268       {
 269         if (!confirm("Accept draw?"))
 270           return;
 271         this.people.forEach(p => {
 272           if (p.sid != this.st.user.sid)
 273             this.st.conn.send(JSON.stringify({code:"draw", target:p.sid}));
 274         });
 275         this.setScore("1/2", "Mutual agreement");
 276       }
 277       else if (this.drawOffer == "sent")
 278       {
 279         this.drawOffer = "";
 280         if (this.game.type == "corr")
 281           GameStorage.update(this.gameRef.id, {drawOffer: false});
 282       }
 283       else
 284       {
 285         if (!confirm("Offer draw?"))
 286           return;
 287         this.drawOffer = "sent";
 288         this.people.forEach(p => {
 289           if (p.sid != this.st.user.sid)
 290             this.st.conn.send(JSON.stringify({code:"drawoffer", target:p.sid}));
 291         });
 292         if (this.game.type == "corr")
 293           GameStorage.update(this.gameRef.id, {drawOffer: true});
 294       }
 295     },
 296     abortGame: function() {
 297       if (!confirm(this.st.tr["Terminate game?"]))
 298         return;
 299       this.setScore("?", "Abort");
 300       this.people.forEach(p => {
 301         if (p.sid != this.st.user.sid)
 302         {
 303           this.st.conn.send(JSON.stringify({
 304             code: "abort",
 305             target: p.sid,
 306           }));
 307         }
 308       });
 309     },
 310     resign: function(e) {
 311       if (!confirm("Resign the game?"))
 312         return;
 313       this.people.forEach(p => {
 314         if (p.sid != this.st.user.sid)
 315         {
 316           this.st.conn.send(JSON.stringify({code:"resign",
 317             side:this.game.mycolor, target:p.sid}));
 318         }
 319       });
 320       this.setScore(this.game.mycolor=="w" ? "0-1" : "1-0", "Resign");
 321     },
 322     // 3 cases for loading a game:
 323     //  - from indexedDB (running or completed live game I play)
 324     //  - from server (one correspondance game I play[ed] or not)
 325     //  - from remote peer (one live game I don't play, finished or not)
 326     loadGame: function(game, callback) {
 327       const afterRetrieval = async (game) => {
 328         const vModule = await import("@/variants/" + game.vname + ".js");
 329         window.V = vModule.VariantRules;
 330         this.vr = new V(game.fen);
 331         const gtype = (game.timeControl.indexOf('d') >= 0 ? "corr" : "live");
 332         const tc = extractTime(game.timeControl);
 333         if (gtype == "corr")
 334         {
 335           if (game.players[0].color == "b")
 336           {
 337             // Adopt the same convention for live and corr games: [0] = white
 338             [ game.players[0], game.players[1] ] =
 339               [ game.players[1], game.players[0] ];
 340           }
 341           // corr game: needs to compute the clocks + initime
 342           // NOTE: clocks in seconds, initime in milliseconds
 343           game.clocks = [tc.mainTime, tc.mainTime];
 344           game.moves.sort((m1,m2) => m1.idx - m2.idx); //in case of
 345           if (game.score == "*") //otherwise no need to bother with time
 346           {
 347             game.initime = [0, 0];
 348             const L = game.moves.length;
 349             if (L >= 3)
 350             {
 351               let addTime = [0, 0];
 352               for (let i=2; i<L; i++)
 353               {
 354                 addTime[i%2] += tc.increment -
 355                   (game.moves[i].played - game.moves[i-1].played) / 1000;
 356               }
 357               for (let i=0; i<=1; i++)
 358                 game.clocks[i] += addTime[i];
 359             }
 360             if (L >= 1)
 361               game.initime[L%2] = game.moves[L-1].played;
 362             if (game.drawOffer)
 363               this.drawOffer = "received";
 364           }
 365           // Now that we used idx and played, re-format moves as for live games
 366           game.moves = game.moves.map( (m) => {
 367             const s = m.squares;
 368             return {
 369               appear: s.appear,
 370               vanish: s.vanish,
 371               start: s.start,
 372               end: s.end,
 373               message: m.message,
 374             };
 375           });
 376         }
 377         const myIdx = game.players.findIndex(p => {
 378           return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 379         });
 380         if (gtype == "live" && game.clocks[0] < 0) //game unstarted
 381         {
 382           game.clocks = [tc.mainTime, tc.mainTime];
 383           if (game.score == "*")
 384           {
 385             game.initime[0] = Date.now();
 386             if (myIdx >= 0)
 387             {
 388               // I play in this live game; corr games don't have clocks+initime
 389               GameStorage.update(game.id,
 390               {
 391                 clocks: game.clocks,
 392                 initime: game.initime,
 393               });
 394             }
 395           }
 396         }
 397         this.game = Object.assign({},
 398           game,
 399           // NOTE: assign mycolor here, since BaseGame could also be VS computer
 400           {
 401             type: gtype,
 402             increment: tc.increment,
 403             mycolor: [undefined,"w","b"][myIdx+1],
 404             // opponent sid not strictly required (or available), but easier
 405             // at least oppsid or oppid is available anyway:
 406             oppsid: (myIdx < 0 ? undefined : game.players[1-myIdx].sid),
 407             oppid: (myIdx < 0 ? undefined : game.players[1-myIdx].uid),
 408           }
 409         );
 410         if (!!this.lastate) //lastate arrived before game was loaded:
 411           this.processLastate();
 412         callback();
 413       };
 414       if (!!game)
 415         return afterRetrieval(game);
 416       if (!!this.gameRef.rid)
 417       {
 418         // Remote live game: forgetting about callback func... (TODO: design)
 419         this.st.conn.send(JSON.stringify(
 420           {code:"askfullgame", target:this.gameRef.rid}));
 421       }
 422       else
 423       {
 424         // Local or corr game
 425         GameStorage.get(this.gameRef.id, afterRetrieval);
 426       }
 427     },
 428     // Post-process a move (which was just played)
 429     processMove: function(move) {
 430       if (!this.game.mycolor)
 431         return; //I'm just an observer
 432       // Update storage (corr or live)
 433       const colorIdx = ["w","b"].indexOf(move.color);
 434       // https://stackoverflow.com/a/38750895
 435       const allowed_fields = ["appear", "vanish", "start", "end"];
 436       const filtered_move = Object.keys(move)
 437         .filter(key => allowed_fields.includes(key))
 438         .reduce((obj, key) => {
 439           obj[key] = move[key];
 440           return obj;
 441         }, {});
 442       // Send move ("newmove" event) to people in the room (if our turn)
 443       let addTime = 0;
 444       if (move.color == this.game.mycolor)
 445       {
 446         if (this.game.moves.length >= 2) //after first move
 447         {
 448           const elapsed = Date.now() - this.game.initime[colorIdx];
 449           // elapsed time is measured in milliseconds
 450           addTime = this.game.increment - elapsed/1000;
 451         }
 452         let sendMove = Object.assign({}, filtered_move, {addTime: addTime});
 453         if (this.game.type == "corr")
 454           sendMove.message = this.corrMsg;
 455         this.people.forEach(p => {
 456           if (p.sid != this.st.user.sid)
 457           {
 458             this.st.conn.send(JSON.stringify({
 459               code: "newmove",
 460               target: p.sid,
 461               move: sendMove,
 462             }));
 463           }
 464         });
 465       }
 466       else
 467         addTime = move.addTime; //supposed transmitted
 468       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 469       // Since corr games are stored at only one location, update should be
 470       // done only by one player for each move:
 471       if (this.game.type == "live" || move.color == this.game.mycolor)
 472       {
 473         if (this.game.type == "corr")
 474         {
 475           GameStorage.update(this.gameRef.id,
 476           {
 477             fen: move.fen,
 478             message: this.corrMsg,
 479             move:
 480             {
 481               squares: filtered_move,
 482               played: Date.now(), //TODO: on server?
 483               idx: this.game.moves.length,
 484             },
 485           });
 486         }
 487         else //live
 488         {
 489           GameStorage.update(this.gameRef.id,
 490           {
 491             fen: move.fen,
 492             move: filtered_move,
 493             clocks: this.game.clocks.map((t,i) => i==colorIdx
 494               ? this.game.clocks[i] + addTime
 495               : this.game.clocks[i]),
 496             initime: this.game.initime.map((t,i) => i==nextIdx
 497               ? Date.now()
 498               : this.game.initime[i]),
 499           });
 500         }
 501       }
 502       // Also update current game object:
 503       this.game.moves.push(move);
 504       this.game.fen = move.fen;
 505       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 506       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 507       this.game.initime[nextIdx] = Date.now();
 508     },
 509     gameOver: function(score) {
 510       this.game.mode = "analyze";
 511       this.game.score = score; //until Vue3, this property change isn't seen
 512                                //by child (and doesn't need to be)
 513       const myIdx = this.game.players.findIndex(p => {
 514         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 515       });
 516       if (myIdx >= 0) //OK, I play in this game
 517         GameStorage.update(this.gameRef.id, { score: score });
 518     },
 519   },
 520 };
 521 </script>
 522
 523 <style lang="sass">
 524 // TODO
 525 </style>