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" :pastChats="game.chats"
   6         @newchat="processChat")
   7   .row
   8     .col-sm-12
   9       #actions(v-if="game.mode!='analyze' && game.score=='*'")
  10         button(@click="offerDraw") Draw
  11         button(@click="abortGame") Abort
  12         button(@click="resign") Resign
  13       div Names: {{ game.players[0].name }} - {{ game.players[1].name }}
  14       div(v-if="game.score=='*'") Time: {{ virtualClocks[0] }} - {{ virtualClocks[1] }}
  15   BaseGame(:game="game" :vr="vr" ref="basegame"
  16     @newmove="processMove" @gameover="gameOver")
  17 </template>
  18
  19 <script>
  20 import BaseGame from "@/components/BaseGame.vue";
  21 import Chat from "@/components/Chat.vue";
  22 import { store } from "@/store";
  23 import { GameStorage } from "@/utils/gameStorage";
  24 import { ppt } from "@/utils/datetime";
  25 import { extractTime } from "@/utils/timeControl";
  26 import { ArrayFun } from "@/utils/array";
  27
  28 export default {
  29   name: 'my-game',
  30   components: {
  31     BaseGame,
  32     Chat,
  33   },
  34   // gameRef: to find the game in (potentially remote) storage
  35   data: function() {
  36     return {
  37       st: store.state,
  38       gameRef: { //given in URL (rid = remote ID)
  39         id: "",
  40         rid: ""
  41       },
  42       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  43       virtualClocks: [0, 0], //initialized with true game.clocks
  44       vr: null, //"variant rules" object initialized from FEN
  45       drawOffer: "", //TODO: use for button style
  46       people: [], //players + observers
  47       lastate: undefined, //used if opponent send lastate before game is ready
  48       repeat: {}, //detect position repetition
  49     };
  50   },
  51   watch: {
  52     "$route": function(to, from) {
  53       this.gameRef.id = to.params["id"];
  54       this.gameRef.rid = to.query["rid"];
  55       this.loadGame();
  56     },
  57     "game.clocks": function(newState) {
  58       if (this.game.moves.length < 2 || this.game.score != "*")
  59       {
  60         // 1st move not completed yet, or game over: freeze time
  61         this.virtualClocks = newState.map(s => ppt(s));
  62         return;
  63       }
  64       const currentTurn = this.vr.turn;
  65       const colorIdx = ["w","b"].indexOf(currentTurn);
  66       let countdown = newState[colorIdx] -
  67         (Date.now() - this.game.initime[colorIdx])/1000;
  68       this.virtualClocks = [0,1].map(i => {
  69         const removeTime = i == colorIdx
  70           ? (Date.now() - this.game.initime[colorIdx])/1000
  71           : 0;
  72         return ppt(newState[i] - removeTime);
  73       });
  74       let clockUpdate = setInterval(() => {
  75         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  76         {
  77           clearInterval(clockUpdate);
  78           if (countdown < 0)
  79             this.gameOver(this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  80         }
  81         else
  82         {
  83           // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
  84           this.$set(this.virtualClocks, colorIdx, ppt(Math.max(0, --countdown)));
  85         }
  86       }, 1000);
  87     },
  88   },
  89   // TODO: redundant code with Hall.vue (related to people array)
  90   created: function() {
  91     // Always add myself to players' list
  92     const my = this.st.user;
  93     this.people.push({sid:my.sid, id:my.id, name:my.name});
  94     this.gameRef.id = this.$route.params["id"];
  95     this.gameRef.rid = this.$route.query["rid"]; //may be undefined
  96     // Define socket .onmessage() and .onclose() events:
  97     this.st.conn.onmessage = this.socketMessageListener;
  98     const socketCloseListener = () => {
  99       store.socketCloseListener(); //reinitialize connexion (in store.js)
 100       this.st.conn.addEventListener('message', this.socketMessageListener);
 101       this.st.conn.addEventListener('close', socketCloseListener);
 102     };
 103     this.st.conn.onclose = socketCloseListener;
 104     // Socket init required before loading remote game:
 105     const socketInit = (callback) => {
 106       if (!!this.st.conn && this.st.conn.readyState == 1) //1 == OPEN state
 107         callback();
 108       else //socket not ready yet (initial loading)
 109         this.st.conn.onopen = callback;
 110     };
 111     if (!this.gameRef.rid) //game stored locally or on server
 112       this.loadGame(null, () => socketInit(this.roomInit));
 113     else //game stored remotely: need socket to retrieve it
 114     {
 115       // NOTE: the callback "roomInit" will be lost, so we don't provide it.
 116       // --> It will be given when receiving "fullgame" socket event.
 117       // A more general approach would be to store it somewhere.
 118       socketInit(this.loadGame);
 119     }
 120   },
 121   methods: {
 122     // O.1] Ask server for room composition:
 123     roomInit: function() {
 124       this.st.conn.send(JSON.stringify({code:"pollclients"}));
 125     },
 126     socketMessageListener: function(msg) {
 127       const data = JSON.parse(msg.data);
 128       switch (data.code)
 129       {
 130         case "duplicate":
 131           alert("Warning: duplicate 'offline' connection");
 132           break;
 133         // 0.2] Receive clients list (just socket IDs)
 134         case "pollclients":
 135         {
 136           data.sockIds.forEach(sid => {
 137             this.people.push({sid:sid, id:0, name:""});
 138             // Ask only identity
 139             this.st.conn.send(JSON.stringify({code:"askidentity", target:sid}));
 140           });
 141           break;
 142         }
 143         case "askidentity":
 144         {
 145           // Request for identification: reply if I'm not anonymous
 146           if (this.st.user.id > 0)
 147           {
 148             this.st.conn.send(JSON.stringify(
 149               // people[0] instead of st.user to avoid sending email
 150               {code:"identity", user:this.people[0], target:data.from}));
 151           }
 152           break;
 153         }
 154         case "identity":
 155         {
 156           let player = this.people.find(p => p.sid == data.user.sid);
 157           // NOTE: sometimes player.id fails because player is undefined...
 158           // Probably because the event was meant for Hall?
 159           if (!player)
 160             return;
 161           player.id = data.user.id;
 162           player.name = data.user.name;
 163           // Sending last state only for live games: corr games are complete
 164           if (this.game.type == "live" && this.game.oppsid == player.sid)
 165           {
 166             // Send our "last state" informations to opponent
 167             const L = this.game.moves.length;
 168             let lastMove = (L>0 ? this.game.moves[L-1] : undefined);
 169             if (!!lastMove && this.drawOffer == "sent")
 170               lastMove.draw = true;
 171             this.st.conn.send(JSON.stringify({
 172               code: "lastate",
 173               target: player.sid,
 174               state:
 175               {
 176                 lastMove: lastMove,
 177                 score: this.game.score,
 178                 movesCount: L,
 179                 clocks: this.game.clocks,
 180               }
 181             }));
 182           }
 183           break;
 184         }
 185         case "askgame":
 186           // Send current (live) game
 187           const myGame =
 188           {
 189             // Minimal game informations:
 190             id: this.game.id,
 191             players: this.game.players.map(p => { return {name:p.name}; }),
 192             vid: this.game.vid,
 193             timeControl: this.game.timeControl,
 194           };
 195           this.st.conn.send(JSON.stringify({code:"game",
 196             game:myGame, target:data.from}));
 197           break;
 198         case "newmove":
 199           this.$set(this.game, "moveToPlay", data.move); //TODO: Vue3...
 200           break;
 201         case "lastate": //got opponent infos about last move
 202         {
 203           this.lastate = data;
 204           if (!!this.game.type) //game is loaded
 205             this.processLastate();
 206           //else: will be processed when game is ready
 207           break;
 208         }
 209         case "resign":
 210           this.gameOver(data.side=="b" ? "1-0" : "0-1", "Resign");
 211           break;
 212         case "abort":
 213           this.gameOver("?", "Abort");
 214           break;
 215         case "draw":
 216           this.gameOver("1/2", "Mutual agreement");
 217           break;
 218         case "drawoffer":
 219           this.drawOffer = "received"; //TODO: observers don't know who offered draw
 220           break;
 221         case "askfullgame":
 222           this.st.conn.send(JSON.stringify({code:"fullgame", game:this.game, target:data.from}));
 223           break;
 224         case "fullgame":
 225           // Callback "roomInit" to poll clients only after game is loaded
 226           this.loadGame(data.game, this.roomInit);
 227           break;
 228         case "connect":
 229         {
 230           this.people.push({name:"", id:0, sid:data.from});
 231           this.st.conn.send(JSON.stringify({code:"askidentity", target:data.from}));
 232           break;
 233         }
 234         case "disconnect":
 235           ArrayFun.remove(this.people, p => p.sid == data.from);
 236           break;
 237       }
 238     },
 239     // lastate was received, but maybe game wasn't ready yet:
 240     processLastate: function() {
 241       const data = this.lastate;
 242       this.lastate = undefined; //security...
 243       const L = this.game.moves.length;
 244       if (data.movesCount > L)
 245       {
 246         // Just got last move from him
 247         this.$set(this.game, "moveToPlay", data.lastMove);
 248         if (data.score != "*" && this.game.score == "*")
 249         {
 250           // Opponent resigned or aborted game, or accepted draw offer
 251           // (this is not a stalemate or checkmate)
 252           this.gameOver(data.score, "Opponent action");
 253         }
 254         this.game.clocks = data.clocks; //TODO: check this?
 255         if (!!data.lastMove.draw)
 256           this.drawOffer = "received";
 257       }
 258     },
 259     offerDraw: function() {
 260       if (this.drawOffer == "received")
 261       {
 262         if (!confirm("Accept draw?"))
 263           return;
 264         this.people.forEach(p => {
 265           if (p.sid != this.st.user.sid)
 266             this.st.conn.send(JSON.stringify({code:"draw", target:p.sid}));
 267         });
 268         this.gameOver("1/2", "Mutual agreement");
 269       }
 270       else if (this.drawOffer == "sent")
 271       {
 272         this.drawOffer = "";
 273         if (this.game.type == "corr")
 274           GameStorage.update(this.gameRef.id, {drawOffer: false});
 275       }
 276       else
 277       {
 278         if (!confirm("Offer draw?"))
 279           return;
 280         this.drawOffer = "sent";
 281         this.people.forEach(p => {
 282           if (p.sid != this.st.user.sid)
 283             this.st.conn.send(JSON.stringify({code:"drawoffer", target:p.sid}));
 284         });
 285         if (this.game.type == "corr")
 286           GameStorage.update(this.gameRef.id, {drawOffer: true});
 287       }
 288     },
 289     abortGame: function() {
 290       if (!confirm(this.st.tr["Terminate game?"]))
 291         return;
 292       this.gameOver("?", "Abort");
 293       this.people.forEach(p => {
 294         if (p.sid != this.st.user.sid)
 295         {
 296           this.st.conn.send(JSON.stringify({
 297             code: "abort",
 298             target: p.sid,
 299           }));
 300         }
 301       });
 302     },
 303     resign: function(e) {
 304       if (!confirm("Resign the game?"))
 305         return;
 306       this.people.forEach(p => {
 307         if (p.sid != this.st.user.sid)
 308         {
 309           this.st.conn.send(JSON.stringify({code:"resign",
 310             side:this.game.mycolor, target:p.sid}));
 311         }
 312       });
 313       this.gameOver(this.game.mycolor=="w" ? "0-1" : "1-0", "Resign");
 314     },
 315     // 3 cases for loading a game:
 316     //  - from indexedDB (running or completed live game I play)
 317     //  - from server (one correspondance game I play[ed] or not)
 318     //  - from remote peer (one live game I don't play, finished or not)
 319     loadGame: function(game, callback) {
 320       const afterRetrieval = async (game) => {
 321         const vModule = await import("@/variants/" + game.vname + ".js");
 322         window.V = vModule.VariantRules;
 323         this.vr = new V(game.fen);
 324         const gtype = (game.timeControl.indexOf('d') >= 0 ? "corr" : "live");
 325         const tc = extractTime(game.timeControl);
 326         if (gtype == "corr")
 327         {
 328           if (game.players[0].color == "b")
 329           {
 330             // Adopt the same convention for live and corr games: [0] = white
 331             [ game.players[0], game.players[1] ] =
 332               [ game.players[1], game.players[0] ];
 333           }
 334           // corr game: needs to compute the clocks + initime
 335           // NOTE: clocks in seconds, initime in milliseconds
 336           game.clocks = [tc.mainTime, tc.mainTime];
 337           game.moves.sort((m1,m2) => m1.idx - m2.idx); //in case of
 338           if (game.score == "*") //otherwise no need to bother with time
 339           {
 340             game.initime = [0, 0];
 341             const L = game.moves.length;
 342             if (L >= 3)
 343             {
 344               let addTime = [0, 0];
 345               for (let i=2; i<L; i++)
 346               {
 347                 addTime[i%2] += tc.increment -
 348                   (game.moves[i].played - game.moves[i-1].played) / 1000;
 349               }
 350               for (let i=0; i<=1; i++)
 351                 game.clocks[i] += addTime[i];
 352             }
 353             if (L >= 1)
 354               game.initime[L%2] = game.moves[L-1].played;
 355             if (game.drawOffer)
 356               this.drawOffer = "received";
 357           }
 358           // Now that we used idx and played, re-format moves as for live games
 359           game.moves = game.moves.map( (m) => {
 360             const s = m.squares;
 361             return {
 362               appear: s.appear,
 363               vanish: s.vanish,
 364               start: s.start,
 365               end: s.end,
 366             };
 367           });
 368           // Also sort chat messages (if any)
 369           game.chats.sort( (c1,c2) => { return c2.added - c1.added; });
 370         }
 371         const myIdx = game.players.findIndex(p => {
 372           return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 373         });
 374         if (gtype == "live" && game.clocks[0] < 0) //game unstarted
 375         {
 376           game.clocks = [tc.mainTime, tc.mainTime];
 377           if (game.score == "*")
 378           {
 379             game.initime[0] = Date.now();
 380             if (myIdx >= 0)
 381             {
 382               // I play in this live game; corr games don't have clocks+initime
 383               GameStorage.update(game.id,
 384               {
 385                 clocks: game.clocks,
 386                 initime: game.initime,
 387               });
 388             }
 389           }
 390         }
 391         this.game = Object.assign({},
 392           game,
 393           // NOTE: assign mycolor here, since BaseGame could also be VS computer
 394           {
 395             type: gtype,
 396             increment: tc.increment,
 397             mycolor: [undefined,"w","b"][myIdx+1],
 398             // opponent sid not strictly required (or available), but easier
 399             // at least oppsid or oppid is available anyway:
 400             oppsid: (myIdx < 0 ? undefined : game.players[1-myIdx].sid),
 401             oppid: (myIdx < 0 ? undefined : game.players[1-myIdx].uid),
 402           }
 403         );
 404         this.repeat = {}; //reset
 405         if (!!this.lastate) //lastate arrived before game was loaded:
 406           this.processLastate();
 407         callback();
 408       };
 409       if (!!game)
 410         return afterRetrieval(game);
 411       if (!!this.gameRef.rid)
 412       {
 413         // Remote live game: forgetting about callback func... (TODO: design)
 414         this.st.conn.send(JSON.stringify(
 415           {code:"askfullgame", target:this.gameRef.rid}));
 416       }
 417       else
 418       {
 419         // Local or corr game
 420         GameStorage.get(this.gameRef.id, afterRetrieval);
 421       }
 422     },
 423     // Post-process a move (which was just played)
 424     processMove: function(move) {
 425       if (!this.game.mycolor)
 426         return; //I'm just an observer
 427       // Update storage (corr or live)
 428       const colorIdx = ["w","b"].indexOf(move.color);
 429       // https://stackoverflow.com/a/38750895
 430       const allowed_fields = ["appear", "vanish", "start", "end"];
 431       const filtered_move = Object.keys(move)
 432         .filter(key => allowed_fields.includes(key))
 433         .reduce((obj, key) => {
 434           obj[key] = move[key];
 435           return obj;
 436         }, {});
 437       // Send move ("newmove" event) to people in the room (if our turn)
 438       let addTime = 0;
 439       if (move.color == this.game.mycolor)
 440       {
 441         if (this.game.moves.length >= 2) //after first move
 442         {
 443           const elapsed = Date.now() - this.game.initime[colorIdx];
 444           // elapsed time is measured in milliseconds
 445           addTime = this.game.increment - elapsed/1000;
 446         }
 447         let sendMove = Object.assign({}, filtered_move, {addTime: addTime});
 448         this.people.forEach(p => {
 449           if (p.sid != this.st.user.sid)
 450           {
 451             this.st.conn.send(JSON.stringify({
 452               code: "newmove",
 453               target: p.sid,
 454               move: sendMove,
 455             }));
 456           }
 457         });
 458       }
 459       else
 460         addTime = move.addTime; //supposed transmitted
 461       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 462       // Since corr games are stored at only one location, update should be
 463       // done only by one player for each move:
 464       if (this.game.type == "live" || move.color == this.game.mycolor)
 465       {
 466         if (this.game.type == "corr")
 467         {
 468           GameStorage.update(this.gameRef.id,
 469           {
 470             fen: move.fen,
 471             move:
 472             {
 473               squares: filtered_move,
 474               played: Date.now(), //TODO: on server?
 475               idx: this.game.moves.length,
 476             },
 477           });
 478         }
 479         else //live
 480         {
 481           GameStorage.update(this.gameRef.id,
 482           {
 483             fen: move.fen,
 484             move: filtered_move,
 485             clocks: this.game.clocks.map((t,i) => i==colorIdx
 486               ? this.game.clocks[i] + addTime
 487               : this.game.clocks[i]),
 488             initime: this.game.initime.map((t,i) => i==nextIdx
 489               ? Date.now()
 490               : this.game.initime[i]),
 491           });
 492         }
 493       }
 494       // Also update current game object:
 495       this.game.moves.push(move);
 496       this.game.fen = move.fen;
 497       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 498       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 499       this.game.initime[nextIdx] = Date.now();
 500       // If repetition detected, consider that a draw offer was received:
 501       const fenObj = V.ParseFen(move.fen);
 502       let repIdx = fenObj.position + "_" + fenObj.turn;
 503       if (!!fenObj.flags)
 504         repIdx += "_" + fenObj.flags;
 505       this.repeat[repIdx] = (!!this.repeat[repIdx]
 506         ? this.repeat[repIdx]+1
 507         : 1);
 508       if (this.repeat[repIdx] >= 3)
 509         this.drawOffer = "received"; //TODO: will print "mutual agreement"...
 510     },
 511     processChat: function(chat) {
 512       if (this.game.type == "corr")
 513         GameStorage.update(this.gameRef.id, {chat: chat});
 514     },
 515     gameOver: function(score, scoreMsg) {
 516       this.game.mode = "analyze";
 517       this.game.score = score;
 518       this.game.scoreMsg = scoreMsg;
 519       const myIdx = this.game.players.findIndex(p => {
 520         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 521       });
 522       if (myIdx >= 0) //OK, I play in this game
 523         GameStorage.update(this.gameRef.id, { score: score });
 524     },
 525   },
 526 };
 527 </script>
 528
 529 <style lang="sass">
 530 .connected
 531   background-color: green
 532 .disconnected
 533   background-color: red
 534
 535 @media screen and (min-width: 768px)
 536   #actions
 537     width: 300px
 538 @media screen and (max-width: 767px)
 539   .game
 540     width: 100%
 541
 542 #actions
 543   margin-top: 10px
 544   margin-left: auto
 545   margin-right: auto
 546   button
 547     display: inline-block
 548     width: 33%
 549     margin: 0
 550 #chat
 551   margin-top: 5px
 552   margin-bottom: 5px
 553   >.card
 554     max-width: 100%
 555     margin: 0;
 556   border: none;
 557 </style>