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")
   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       div(v-if="game.type=='corr'") {{ game.corrMsg }}
  15       textarea(v-if="game.score=='*'" v-model="corrMsg")
  16   BaseGame(:game="game" :vr="vr" ref="basegame"
  17     @newmove="processMove" @gameover="gameOver")
  18 </template>
  19
  20 <script>
  21 import BaseGame from "@/components/BaseGame.vue";
  22 import Chat from "@/components/Chat.vue";
  23 import { store } from "@/store";
  24 import { GameStorage } from "@/utils/gameStorage";
  25 import { ppt } from "@/utils/datetime";
  26 import { extractTime } from "@/utils/timeControl";
  27 import { ArrayFun } from "@/utils/array";
  28
  29 export default {
  30   name: 'my-game',
  31   components: {
  32     BaseGame,
  33     Chat,
  34   },
  35   // gameRef: to find the game in (potentially remote) storage
  36   data: function() {
  37     return {
  38       st: store.state,
  39       gameRef: { //given in URL (rid = remote ID)
  40         id: "",
  41         rid: ""
  42       },
  43       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  44       corrMsg: "", //to send offline messages in corr games
  45       virtualClocks: [0, 0], //initialized with true game.clocks
  46       vr: null, //"variant rules" object initialized from FEN
  47       drawOffer: "", //TODO: use for button style
  48       people: [], //players + observers
  49       lastate: undefined, //used if opponent send lastate before game is ready
  50       repeat: {}, //detect position repetition
  51     };
  52   },
  53   watch: {
  54     "$route": function(to, from) {
  55       this.gameRef.id = to.params["id"];
  56       this.gameRef.rid = to.query["rid"];
  57       this.loadGame();
  58     },
  59     "game.clocks": function(newState) {
  60       if (this.game.moves.length < 2 || this.game.score != "*")
  61       {
  62         // 1st move not completed yet, or game over: freeze time
  63         this.virtualClocks = newState.map(s => ppt(s));
  64         return;
  65       }
  66       const currentTurn = this.vr.turn;
  67       const colorIdx = ["w","b"].indexOf(currentTurn);
  68       let countdown = newState[colorIdx] -
  69         (Date.now() - this.game.initime[colorIdx])/1000;
  70       this.virtualClocks = [0,1].map(i => {
  71         const removeTime = i == colorIdx
  72           ? (Date.now() - this.game.initime[colorIdx])/1000
  73           : 0;
  74         return ppt(newState[i] - removeTime);
  75       });
  76       let clockUpdate = setInterval(() => {
  77         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  78         {
  79           clearInterval(clockUpdate);
  80           if (countdown < 0)
  81             this.gameOver(this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  82         }
  83         else
  84         {
  85           // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
  86           this.$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.$set(this.game, "moveToPlay", data.move); //TODO: Vue3...
 203           break;
 204         case "lastate": //got opponent infos about last move
 205         {
 206           this.lastate = data;
 207           if (!!this.game.type) //game is loaded
 208             this.processLastate();
 209           //else: will be processed when game is ready
 210           break;
 211         }
 212         case "resign":
 213           this.gameOver(data.side=="b" ? "1-0" : "0-1", "Resign");
 214           break;
 215         case "abort":
 216           this.gameOver("?", "Abort");
 217           break;
 218         case "draw":
 219           this.gameOver("1/2", "Mutual agreement");
 220           break;
 221         case "drawoffer":
 222           this.drawOffer = "received"; //TODO: observers don't know who offered draw
 223           break;
 224         case "askfullgame":
 225           this.st.conn.send(JSON.stringify({code:"fullgame", game:this.game, target:data.from}));
 226           break;
 227         case "fullgame":
 228           // Callback "roomInit" to poll clients only after game is loaded
 229           this.loadGame(data.game, this.roomInit);
 230           break;
 231         case "connect":
 232         {
 233           this.people.push({name:"", id:0, sid:data.from});
 234           this.st.conn.send(JSON.stringify({code:"askidentity", target:data.from}));
 235           break;
 236         }
 237         case "disconnect":
 238           ArrayFun.remove(this.people, p => p.sid == data.from);
 239           break;
 240       }
 241     },
 242     // lastate was received, but maybe game wasn't ready yet:
 243     processLastate: function() {
 244       const data = this.lastate;
 245       this.lastate = undefined; //security...
 246       const L = this.game.moves.length;
 247       if (data.movesCount > L)
 248       {
 249         // Just got last move from him
 250         this.$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.gameOver(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     offerDraw: function() {
 263       if (this.drawOffer == "received")
 264       {
 265         if (!confirm("Accept draw?"))
 266           return;
 267         this.people.forEach(p => {
 268           if (p.sid != this.st.user.sid)
 269             this.st.conn.send(JSON.stringify({code:"draw", target:p.sid}));
 270         });
 271         this.gameOver("1/2", "Mutual agreement");
 272       }
 273       else if (this.drawOffer == "sent")
 274       {
 275         this.drawOffer = "";
 276         if (this.game.type == "corr")
 277           GameStorage.update(this.gameRef.id, {drawOffer: false});
 278       }
 279       else
 280       {
 281         if (!confirm("Offer draw?"))
 282           return;
 283         this.drawOffer = "sent";
 284         this.people.forEach(p => {
 285           if (p.sid != this.st.user.sid)
 286             this.st.conn.send(JSON.stringify({code:"drawoffer", target:p.sid}));
 287         });
 288         if (this.game.type == "corr")
 289           GameStorage.update(this.gameRef.id, {drawOffer: true});
 290       }
 291     },
 292     abortGame: function() {
 293       if (!confirm(this.st.tr["Terminate game?"]))
 294         return;
 295       this.gameOver("?", "Abort");
 296       this.people.forEach(p => {
 297         if (p.sid != this.st.user.sid)
 298         {
 299           this.st.conn.send(JSON.stringify({
 300             code: "abort",
 301             target: p.sid,
 302           }));
 303         }
 304       });
 305     },
 306     resign: function(e) {
 307       if (!confirm("Resign the game?"))
 308         return;
 309       this.people.forEach(p => {
 310         if (p.sid != this.st.user.sid)
 311         {
 312           this.st.conn.send(JSON.stringify({code:"resign",
 313             side:this.game.mycolor, target:p.sid}));
 314         }
 315       });
 316       this.gameOver(this.game.mycolor=="w" ? "0-1" : "1-0", "Resign");
 317     },
 318     // 3 cases for loading a game:
 319     //  - from indexedDB (running or completed live game I play)
 320     //  - from server (one correspondance game I play[ed] or not)
 321     //  - from remote peer (one live game I don't play, finished or not)
 322     loadGame: function(game, callback) {
 323       const afterRetrieval = async (game) => {
 324         const vModule = await import("@/variants/" + game.vname + ".js");
 325         window.V = vModule.VariantRules;
 326         this.vr = new V(game.fen);
 327         const gtype = (game.timeControl.indexOf('d') >= 0 ? "corr" : "live");
 328         const tc = extractTime(game.timeControl);
 329         if (gtype == "corr")
 330         {
 331           if (game.players[0].color == "b")
 332           {
 333             // Adopt the same convention for live and corr games: [0] = white
 334             [ game.players[0], game.players[1] ] =
 335               [ game.players[1], game.players[0] ];
 336           }
 337           // corr game: needs to compute the clocks + initime
 338           // NOTE: clocks in seconds, initime in milliseconds
 339           game.clocks = [tc.mainTime, tc.mainTime];
 340           game.moves.sort((m1,m2) => m1.idx - m2.idx); //in case of
 341           if (game.score == "*") //otherwise no need to bother with time
 342           {
 343             game.initime = [0, 0];
 344             const L = game.moves.length;
 345             if (L >= 3)
 346             {
 347               let addTime = [0, 0];
 348               for (let i=2; i<L; i++)
 349               {
 350                 addTime[i%2] += tc.increment -
 351                   (game.moves[i].played - game.moves[i-1].played) / 1000;
 352               }
 353               for (let i=0; i<=1; i++)
 354                 game.clocks[i] += addTime[i];
 355             }
 356             if (L >= 1)
 357               game.initime[L%2] = game.moves[L-1].played;
 358             if (game.drawOffer)
 359               this.drawOffer = "received";
 360           }
 361           // Now that we used idx and played, re-format moves as for live games
 362           game.moves = game.moves.map( (m) => {
 363             const s = m.squares;
 364             return {
 365               appear: s.appear,
 366               vanish: s.vanish,
 367               start: s.start,
 368               end: s.end,
 369               message: m.message,
 370             };
 371           });
 372         }
 373         const myIdx = game.players.findIndex(p => {
 374           return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 375         });
 376         if (gtype == "live" && game.clocks[0] < 0) //game unstarted
 377         {
 378           game.clocks = [tc.mainTime, tc.mainTime];
 379           if (game.score == "*")
 380           {
 381             game.initime[0] = Date.now();
 382             if (myIdx >= 0)
 383             {
 384               // I play in this live game; corr games don't have clocks+initime
 385               GameStorage.update(game.id,
 386               {
 387                 clocks: game.clocks,
 388                 initime: game.initime,
 389               });
 390             }
 391           }
 392         }
 393         this.game = Object.assign({},
 394           game,
 395           // NOTE: assign mycolor here, since BaseGame could also be VS computer
 396           {
 397             type: gtype,
 398             increment: tc.increment,
 399             mycolor: [undefined,"w","b"][myIdx+1],
 400             // opponent sid not strictly required (or available), but easier
 401             // at least oppsid or oppid is available anyway:
 402             oppsid: (myIdx < 0 ? undefined : game.players[1-myIdx].sid),
 403             oppid: (myIdx < 0 ? undefined : game.players[1-myIdx].uid),
 404           }
 405         );
 406         this.repeat = {}; //reset
 407         if (!!this.lastate) //lastate arrived before game was loaded:
 408           this.processLastate();
 409         callback();
 410       };
 411       if (!!game)
 412         return afterRetrieval(game);
 413       if (!!this.gameRef.rid)
 414       {
 415         // Remote live game: forgetting about callback func... (TODO: design)
 416         this.st.conn.send(JSON.stringify(
 417           {code:"askfullgame", target:this.gameRef.rid}));
 418       }
 419       else
 420       {
 421         // Local or corr game
 422         GameStorage.get(this.gameRef.id, afterRetrieval);
 423       }
 424     },
 425     // Post-process a move (which was just played)
 426     processMove: function(move) {
 427       if (!this.game.mycolor)
 428         return; //I'm just an observer
 429       // Update storage (corr or live)
 430       const colorIdx = ["w","b"].indexOf(move.color);
 431       // https://stackoverflow.com/a/38750895
 432       const allowed_fields = ["appear", "vanish", "start", "end"];
 433       const filtered_move = Object.keys(move)
 434         .filter(key => allowed_fields.includes(key))
 435         .reduce((obj, key) => {
 436           obj[key] = move[key];
 437           return obj;
 438         }, {});
 439       // Send move ("newmove" event) to people in the room (if our turn)
 440       let addTime = 0;
 441       if (move.color == this.game.mycolor)
 442       {
 443         if (this.game.moves.length >= 2) //after first move
 444         {
 445           const elapsed = Date.now() - this.game.initime[colorIdx];
 446           // elapsed time is measured in milliseconds
 447           addTime = this.game.increment - elapsed/1000;
 448         }
 449         let sendMove = Object.assign({}, filtered_move, {addTime: addTime});
 450         if (this.game.type == "corr")
 451           sendMove.message = this.corrMsg;
 452         this.people.forEach(p => {
 453           if (p.sid != this.st.user.sid)
 454           {
 455             this.st.conn.send(JSON.stringify({
 456               code: "newmove",
 457               target: p.sid,
 458               move: sendMove,
 459             }));
 460           }
 461         });
 462       }
 463       else
 464         addTime = move.addTime; //supposed transmitted
 465       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 466       // Since corr games are stored at only one location, update should be
 467       // done only by one player for each move:
 468       if (this.game.type == "live" || move.color == this.game.mycolor)
 469       {
 470         if (this.game.type == "corr")
 471         {
 472           GameStorage.update(this.gameRef.id,
 473           {
 474             fen: move.fen,
 475             message: this.corrMsg,
 476             move:
 477             {
 478               squares: filtered_move,
 479               played: Date.now(), //TODO: on server?
 480               idx: this.game.moves.length,
 481             },
 482           });
 483         }
 484         else //live
 485         {
 486           GameStorage.update(this.gameRef.id,
 487           {
 488             fen: move.fen,
 489             move: filtered_move,
 490             clocks: this.game.clocks.map((t,i) => i==colorIdx
 491               ? this.game.clocks[i] + addTime
 492               : this.game.clocks[i]),
 493             initime: this.game.initime.map((t,i) => i==nextIdx
 494               ? Date.now()
 495               : this.game.initime[i]),
 496           });
 497         }
 498       }
 499       // Also update current game object:
 500       this.game.moves.push(move);
 501       this.game.fen = move.fen;
 502       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 503       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 504       this.game.initime[nextIdx] = Date.now();
 505       // If repetition detected, consider that a draw offer was received:
 506       const fenObj = V.ParseFen(move.fen);
 507       let repIdx = fenObj.position + "_" + fenObj.turn;
 508       if (!!fenObj.flags)
 509         repIdx += "_" + fenObj.flags;
 510       this.repeat[repIdx] = (!!this.repeat[repIdx]
 511         ? this.repeat[repIdx]+1
 512         : 1);
 513       if (this.repeat[repIdx] >= 3)
 514         this.drawOffer = "received"; //TODO: will print "mutual agreement"...
 515     },
 516     gameOver: function(score, scoreMsg) {
 517       this.game.mode = "analyze";
 518       this.game.score = score;
 519       this.game.scoreMsg = scoreMsg;
 520       const myIdx = this.game.players.findIndex(p => {
 521         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 522       });
 523       if (myIdx >= 0) //OK, I play in this game
 524         GameStorage.update(this.gameRef.id, { score: score });
 525     },
 526   },
 527 };
 528 </script>
 529
 530 <style lang="sass">
 531 .connected
 532   background-color: green
 533 .disconnected
 534   background-color: red
 535
 536 @media screen and (min-width: 768px)
 537   #actions
 538     width: 300px
 539 @media screen and (max-width: 767px)
 540   .game
 541     width: 100%
 542
 543 #actions
 544   margin-top: 10px
 545   margin-left: auto
 546   margin-right: auto
 547   button
 548     display: inline-block
 549     width: 33%
 550     margin: 0
 551 #chat
 552   margin-top: 5px
 553   margin-bottom: 5px
 554   >.card
 555     max-width: 100%
 556     margin: 0;
 557   border: none;
 558 </style>