client/src/views/Game.vue

   1 <template lang="pug">
   2 main
   3   .row
   4     #chat.col-sm-12.col-md-4.col-md-offset-4
   5       Chat(:players="game.players" @newchat="processChat")
   6   .row
   7     .col-sm-12
   8       #actions(v-if="game.mode!='analyze' && game.score=='*'")
   9         button(@click="offerDraw") Draw
  10         button(@click="abortGame") Abort
  11         button(@click="resign") Resign
  12       div Names: {{ game.players[0].name }} - {{ game.players[1].name }}
  13       div(v-if="game.score=='*'") Time: {{ virtualClocks[0] }} - {{ virtualClocks[1] }}
  14   BaseGame(:game="game" :vr="vr" ref="basegame"
  15     @newmove="processMove" @gameover="gameOver")
  16 </template>
  17
  18 <script>
  19 import BaseGame from "@/components/BaseGame.vue";
  20 import Chat from "@/components/Chat.vue";
  21 import { store } from "@/store";
  22 import { GameStorage } from "@/utils/gameStorage";
  23 import { ppt } from "@/utils/datetime";
  24 import { extractTime } from "@/utils/timeControl";
  25 import { ArrayFun } from "@/utils/array";
  26
  27 export default {
  28   name: 'my-game',
  29   components: {
  30     BaseGame,
  31     Chat,
  32   },
  33   // gameRef: to find the game in (potentially remote) storage
  34   data: function() {
  35     return {
  36       st: store.state,
  37       gameRef: { //given in URL (rid = remote ID)
  38         id: "",
  39         rid: ""
  40       },
  41       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  42       virtualClocks: [0, 0], //initialized with true game.clocks
  43       vr: null, //"variant rules" object initialized from FEN
  44       drawOffer: "", //TODO: use for button style
  45       people: [], //players + observers
  46       lastate: undefined, //used if opponent send lastate before game is ready
  47       repeat: {}, //detect position repetition
  48     };
  49   },
  50   watch: {
  51     "$route": function(to, from) {
  52       this.gameRef.id = to.params["id"];
  53       this.gameRef.rid = to.query["rid"];
  54       this.loadGame();
  55     },
  56     "game.clocks": function(newState) {
  57       if (this.game.moves.length < 2 || this.game.score != "*")
  58       {
  59         // 1st move not completed yet, or game over: freeze time
  60         this.virtualClocks = newState.map(s => ppt(s));
  61         return;
  62       }
  63       const currentTurn = this.vr.turn;
  64       const colorIdx = ["w","b"].indexOf(currentTurn);
  65       let countdown = newState[colorIdx] -
  66         (Date.now() - this.game.initime[colorIdx])/1000;
  67       this.virtualClocks = [0,1].map(i => {
  68         const removeTime = i == colorIdx
  69           ? (Date.now() - this.game.initime[colorIdx])/1000
  70           : 0;
  71         return ppt(newState[i] - removeTime);
  72       });
  73       let clockUpdate = setInterval(() => {
  74         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  75         {
  76           clearInterval(clockUpdate);
  77           if (countdown < 0)
  78             this.gameOver(this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  79         }
  80         else
  81         {
  82           // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
  83           this.$set(this.virtualClocks, colorIdx, ppt(Math.max(0, --countdown)));
  84         }
  85       }, 1000);
  86     },
  87   },
  88   // TODO: redundant code with Hall.vue (related to people array)
  89   created: function() {
  90     // Always add myself to players' list
  91     const my = this.st.user;
  92     this.people.push({sid:my.sid, id:my.id, name:my.name});
  93     this.gameRef.id = this.$route.params["id"];
  94     this.gameRef.rid = this.$route.query["rid"]; //may be undefined
  95     // Define socket .onmessage() and .onclose() events:
  96     this.st.conn.onmessage = this.socketMessageListener;
  97     const socketCloseListener = () => {
  98       store.socketCloseListener(); //reinitialize connexion (in store.js)
  99       this.st.conn.addEventListener('message', this.socketMessageListener);
 100       this.st.conn.addEventListener('close', socketCloseListener);
 101     };
 102     this.st.conn.onclose = socketCloseListener;
 103     // Socket init required before loading remote game:
 104     const socketInit = (callback) => {
 105       if (!!this.st.conn && this.st.conn.readyState == 1) //1 == OPEN state
 106         callback();
 107       else //socket not ready yet (initial loading)
 108         this.st.conn.onopen = callback;
 109     };
 110     if (!this.gameRef.rid) //game stored locally or on server
 111       this.loadGame(null, () => socketInit(this.roomInit));
 112     else //game stored remotely: need socket to retrieve it
 113     {
 114       // NOTE: the callback "roomInit" will be lost, so we don't provide it.
 115       // --> It will be given when receiving "fullgame" socket event.
 116       // A more general approach would be to store it somewhere.
 117       socketInit(this.loadGame);
 118     }
 119   },
 120   methods: {
 121     // O.1] Ask server for room composition:
 122     roomInit: function() {
 123       this.st.conn.send(JSON.stringify({code:"pollclients"}));
 124     },
 125     socketMessageListener: function(msg) {
 126       const data = JSON.parse(msg.data);
 127       switch (data.code)
 128       {
 129         case "duplicate":
 130           alert("Warning: duplicate 'offline' connection");
 131           break;
 132         // 0.2] Receive clients list (just socket IDs)
 133         case "pollclients":
 134         {
 135           data.sockIds.forEach(sid => {
 136             this.people.push({sid:sid, id:0, name:""});
 137             // Ask only identity
 138             this.st.conn.send(JSON.stringify({code:"askidentity", target:sid}));
 139           });
 140           break;
 141         }
 142         case "askidentity":
 143         {
 144           // Request for identification: reply if I'm not anonymous
 145           if (this.st.user.id > 0)
 146           {
 147             this.st.conn.send(JSON.stringify(
 148               // people[0] instead of st.user to avoid sending email
 149               {code:"identity", user:this.people[0], target:data.from}));
 150           }
 151           break;
 152         }
 153         case "identity":
 154         {
 155           let player = this.people.find(p => p.sid == data.user.sid);
 156           // NOTE: sometimes player.id fails because player is undefined...
 157           // Probably because the event was meant for Hall?
 158           if (!player)
 159             return;
 160           player.id = data.user.id;
 161           player.name = data.user.name;
 162           // Sending last state only for live games: corr games are complete
 163           if (this.game.type == "live" && this.game.oppsid == player.sid)
 164           {
 165             // Send our "last state" informations to opponent
 166             const L = this.game.moves.length;
 167             let lastMove = (L>0 ? this.game.moves[L-1] : undefined);
 168             if (!!lastMove && this.drawOffer == "sent")
 169               lastMove.draw = true;
 170             this.st.conn.send(JSON.stringify({
 171               code: "lastate",
 172               target: player.sid,
 173               state:
 174               {
 175                 lastMove: lastMove,
 176                 score: this.game.score,
 177                 movesCount: L,
 178                 clocks: this.game.clocks,
 179               }
 180             }));
 181           }
 182           break;
 183         }
 184         case "askgame":
 185           // Send current (live) game
 186           const myGame =
 187           {
 188             // Minimal game informations:
 189             id: this.game.id,
 190             players: this.game.players.map(p => { return {name:p.name}; }),
 191             vid: this.game.vid,
 192             timeControl: this.game.timeControl,
 193           };
 194           this.st.conn.send(JSON.stringify({code:"game",
 195             game:myGame, target:data.from}));
 196           break;
 197         case "newmove":
 198           this.$set(this.game, "moveToPlay", data.move); //TODO: Vue3...
 199           break;
 200         case "lastate": //got opponent infos about last move
 201         {
 202           this.lastate = data;
 203           if (!!this.game.type) //game is loaded
 204             this.processLastate();
 205           //else: will be processed when game is ready
 206           break;
 207         }
 208         case "resign":
 209           this.gameOver(data.side=="b" ? "1-0" : "0-1", "Resign");
 210           break;
 211         case "abort":
 212           this.gameOver("?", "Abort");
 213           break;
 214         case "draw":
 215           this.gameOver("1/2", "Mutual agreement");
 216           break;
 217         case "drawoffer":
 218           this.drawOffer = "received"; //TODO: observers don't know who offered draw
 219           break;
 220         case "askfullgame":
 221           this.st.conn.send(JSON.stringify({code:"fullgame", game:this.game, target:data.from}));
 222           break;
 223         case "fullgame":
 224           // Callback "roomInit" to poll clients only after game is loaded
 225           this.loadGame(data.game, this.roomInit);
 226           break;
 227         case "connect":
 228         {
 229           this.people.push({name:"", id:0, sid:data.from});
 230           this.st.conn.send(JSON.stringify({code:"askidentity", target:data.from}));
 231           break;
 232         }
 233         case "disconnect":
 234           ArrayFun.remove(this.people, p => p.sid == data.from);
 235           break;
 236       }
 237     },
 238     // lastate was received, but maybe game wasn't ready yet:
 239     processLastate: function() {
 240       const data = this.lastate;
 241       this.lastate = undefined; //security...
 242       const L = this.game.moves.length;
 243       if (data.movesCount > L)
 244       {
 245         // Just got last move from him
 246         this.$set(this.game, "moveToPlay", data.lastMove);
 247         if (data.score != "*" && this.game.score == "*")
 248         {
 249           // Opponent resigned or aborted game, or accepted draw offer
 250           // (this is not a stalemate or checkmate)
 251           this.gameOver(data.score, "Opponent action");
 252         }
 253         this.game.clocks = data.clocks; //TODO: check this?
 254         if (!!data.lastMove.draw)
 255           this.drawOffer = "received";
 256       }
 257     },
 258     offerDraw: function() {
 259       if (this.drawOffer == "received")
 260       {
 261         if (!confirm("Accept draw?"))
 262           return;
 263         this.people.forEach(p => {
 264           if (p.sid != this.st.user.sid)
 265             this.st.conn.send(JSON.stringify({code:"draw", target:p.sid}));
 266         });
 267         this.gameOver("1/2", "Mutual agreement");
 268       }
 269       else if (this.drawOffer == "sent")
 270       {
 271         this.drawOffer = "";
 272         if (this.game.type == "corr")
 273           GameStorage.update(this.gameRef.id, {drawOffer: false});
 274       }
 275       else
 276       {
 277         if (!confirm("Offer draw?"))
 278           return;
 279         this.drawOffer = "sent";
 280         this.people.forEach(p => {
 281           if (p.sid != this.st.user.sid)
 282             this.st.conn.send(JSON.stringify({code:"drawoffer", target:p.sid}));
 283         });
 284         if (this.game.type == "corr")
 285           GameStorage.update(this.gameRef.id, {drawOffer: true});
 286       }
 287     },
 288     abortGame: function() {
 289       if (!confirm(this.st.tr["Terminate game?"]))
 290         return;
 291       this.gameOver("?", "Abort");
 292       this.people.forEach(p => {
 293         if (p.sid != this.st.user.sid)
 294         {
 295           this.st.conn.send(JSON.stringify({
 296             code: "abort",
 297             target: p.sid,
 298           }));
 299         }
 300       });
 301     },
 302     resign: function(e) {
 303       if (!confirm("Resign the game?"))
 304         return;
 305       this.people.forEach(p => {
 306         if (p.sid != this.st.user.sid)
 307         {
 308           this.st.conn.send(JSON.stringify({code:"resign",
 309             side:this.game.mycolor, target:p.sid}));
 310         }
 311       });
 312       this.gameOver(this.game.mycolor=="w" ? "0-1" : "1-0", "Resign");
 313     },
 314     // 3 cases for loading a game:
 315     //  - from indexedDB (running or completed live game I play)
 316     //  - from server (one correspondance game I play[ed] or not)
 317     //  - from remote peer (one live game I don't play, finished or not)
 318     loadGame: function(game, callback) {
 319       const afterRetrieval = async (game) => {
 320         const vModule = await import("@/variants/" + game.vname + ".js");
 321         window.V = vModule.VariantRules;
 322         this.vr = new V(game.fen);
 323         const gtype = (game.timeControl.indexOf('d') >= 0 ? "corr" : "live");
 324         const tc = extractTime(game.timeControl);
 325         if (gtype == "corr")
 326         {
 327           if (game.players[0].color == "b")
 328           {
 329             // Adopt the same convention for live and corr games: [0] = white
 330             [ game.players[0], game.players[1] ] =
 331               [ game.players[1], game.players[0] ];
 332           }
 333           // corr game: needs to compute the clocks + initime
 334           // NOTE: clocks in seconds, initime in milliseconds
 335           game.clocks = [tc.mainTime, tc.mainTime];
 336           game.moves.sort((m1,m2) => m1.idx - m2.idx); //in case of
 337           if (game.score == "*") //otherwise no need to bother with time
 338           {
 339             game.initime = [0, 0];
 340             const L = game.moves.length;
 341             if (L >= 3)
 342             {
 343               let addTime = [0, 0];
 344               for (let i=2; i<L; i++)
 345               {
 346                 addTime[i%2] += tc.increment -
 347                   (game.moves[i].played - game.moves[i-1].played) / 1000;
 348               }
 349               for (let i=0; i<=1; i++)
 350                 game.clocks[i] += addTime[i];
 351             }
 352             if (L >= 1)
 353               game.initime[L%2] = game.moves[L-1].played;
 354             if (game.drawOffer)
 355               this.drawOffer = "received";
 356           }
 357           // Now that we used idx and played, re-format moves as for live games
 358           game.moves = game.moves.map( (m) => {
 359             const s = m.squares;
 360             return {
 361               appear: s.appear,
 362               vanish: s.vanish,
 363               start: s.start,
 364               end: s.end,
 365             };
 366           });
 367         }
 368         const myIdx = game.players.findIndex(p => {
 369           return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 370         });
 371         if (gtype == "live" && game.clocks[0] < 0) //game unstarted
 372         {
 373           game.clocks = [tc.mainTime, tc.mainTime];
 374           if (game.score == "*")
 375           {
 376             game.initime[0] = Date.now();
 377             if (myIdx >= 0)
 378             {
 379               // I play in this live game; corr games don't have clocks+initime
 380               GameStorage.update(game.id,
 381               {
 382                 clocks: game.clocks,
 383                 initime: game.initime,
 384               });
 385             }
 386           }
 387         }
 388         this.game = Object.assign({},
 389           game,
 390           // NOTE: assign mycolor here, since BaseGame could also be VS computer
 391           {
 392             type: gtype,
 393             increment: tc.increment,
 394             mycolor: [undefined,"w","b"][myIdx+1],
 395             // opponent sid not strictly required (or available), but easier
 396             // at least oppsid or oppid is available anyway:
 397             oppsid: (myIdx < 0 ? undefined : game.players[1-myIdx].sid),
 398             oppid: (myIdx < 0 ? undefined : game.players[1-myIdx].uid),
 399           }
 400         );
 401         this.repeat = {}; //reset
 402         if (!!this.lastate) //lastate arrived before game was loaded:
 403           this.processLastate();
 404         callback();
 405       };
 406       if (!!game)
 407         return afterRetrieval(game);
 408       if (!!this.gameRef.rid)
 409       {
 410         // Remote live game: forgetting about callback func... (TODO: design)
 411         this.st.conn.send(JSON.stringify(
 412           {code:"askfullgame", target:this.gameRef.rid}));
 413       }
 414       else
 415       {
 416         // Local or corr game
 417         GameStorage.get(this.gameRef.id, afterRetrieval);
 418       }
 419     },
 420     // Post-process a move (which was just played)
 421     processMove: function(move) {
 422       if (!this.game.mycolor)
 423         return; //I'm just an observer
 424       // Update storage (corr or live)
 425       const colorIdx = ["w","b"].indexOf(move.color);
 426       // https://stackoverflow.com/a/38750895
 427       const allowed_fields = ["appear", "vanish", "start", "end"];
 428       const filtered_move = Object.keys(move)
 429         .filter(key => allowed_fields.includes(key))
 430         .reduce((obj, key) => {
 431           obj[key] = move[key];
 432           return obj;
 433         }, {});
 434       // Send move ("newmove" event) to people in the room (if our turn)
 435       let addTime = 0;
 436       if (move.color == this.game.mycolor)
 437       {
 438         if (this.game.moves.length >= 2) //after first move
 439         {
 440           const elapsed = Date.now() - this.game.initime[colorIdx];
 441           // elapsed time is measured in milliseconds
 442           addTime = this.game.increment - elapsed/1000;
 443         }
 444         let sendMove = Object.assign({}, filtered_move, {addTime: addTime});
 445         this.people.forEach(p => {
 446           if (p.sid != this.st.user.sid)
 447           {
 448             this.st.conn.send(JSON.stringify({
 449               code: "newmove",
 450               target: p.sid,
 451               move: sendMove,
 452             }));
 453           }
 454         });
 455       }
 456       else
 457         addTime = move.addTime; //supposed transmitted
 458       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 459       // Since corr games are stored at only one location, update should be
 460       // done only by one player for each move:
 461       if (this.game.type == "live" || move.color == this.game.mycolor)
 462       {
 463         if (this.game.type == "corr")
 464         {
 465           GameStorage.update(this.gameRef.id,
 466           {
 467             fen: move.fen,
 468             move:
 469             {
 470               squares: filtered_move,
 471               played: Date.now(), //TODO: on server?
 472               idx: this.game.moves.length,
 473             },
 474           });
 475         }
 476         else //live
 477         {
 478           GameStorage.update(this.gameRef.id,
 479           {
 480             fen: move.fen,
 481             move: filtered_move,
 482             clocks: this.game.clocks.map((t,i) => i==colorIdx
 483               ? this.game.clocks[i] + addTime
 484               : this.game.clocks[i]),
 485             initime: this.game.initime.map((t,i) => i==nextIdx
 486               ? Date.now()
 487               : this.game.initime[i]),
 488           });
 489         }
 490       }
 491       // Also update current game object:
 492       this.game.moves.push(move);
 493       this.game.fen = move.fen;
 494       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 495       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 496       this.game.initime[nextIdx] = Date.now();
 497       // If repetition detected, consider that a draw offer was received:
 498       const fenObj = V.ParseFen(move.fen);
 499       let repIdx = fenObj.position + "_" + fenObj.turn;
 500       if (!!fenObj.flags)
 501         repIdx += "_" + fenObj.flags;
 502       this.repeat[repIdx] = (!!this.repeat[repIdx]
 503         ? this.repeat[repIdx]+1
 504         : 1);
 505       if (this.repeat[repIdx] >= 3)
 506         this.drawOffer = "received"; //TODO: will print "mutual agreement"...
 507     },
 508     processChat: function(chat) {
 509       if (this.game.type == "corr")
 510         GameStorage.update(this.gameRef.id, {chat: chat});
 511     },
 512     gameOver: function(score, scoreMsg) {
 513       this.game.mode = "analyze";
 514       this.game.score = score;
 515       this.game.scoreMsg = scoreMsg;
 516       const myIdx = this.game.players.findIndex(p => {
 517         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 518       });
 519       if (myIdx >= 0) //OK, I play in this game
 520         GameStorage.update(this.gameRef.id, { score: score });
 521     },
 522   },
 523 };
 524 </script>
 525
 526 <style lang="sass">
 527 .connected
 528   background-color: green
 529 .disconnected
 530   background-color: red
 531
 532 @media screen and (min-width: 768px)
 533   #actions
 534     width: 300px
 535 @media screen and (max-width: 767px)
 536   .game
 537     width: 100%
 538
 539 #actions
 540   margin-top: 10px
 541   margin-left: auto
 542   margin-right: auto
 543   button
 544     display: inline-block
 545     width: 33%
 546     margin: 0
 547 #chat
 548   margin-top: 5px
 549   margin-bottom: 5px
 550   >.card
 551     max-width: 100%
 552     margin: 0;
 553   border: none;
 554 </style>