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