client/src/views/Game.vue

   1 <template lang="pug">
   2 .row
   3   .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
   4     BaseGame(:game="game" :vr="vr" ref="basegame"
   5       @newmove="processMove" @gameover="gameOver")
   6     div Names: {{ game.players[0].name }} - {{ game.players[1].name }}
   7     div(v-if="game.score=='*'") Time: {{ virtualClocks[0] }} - {{ virtualClocks[1] }}
   8     .button-group(v-if="game.mode!='analyze' && game.score=='*'")
   9       button(@click="offerDraw") Draw
  10       button(@click="abortGame") Abort
  11       button(@click="resign") Resign
  12     textarea(v-if="game.score=='*'" v-model="corrMsg")
  13     Chat(:players="game.players")
  14 </template>
  15
  16 <script>
  17 import BaseGame from "@/components/BaseGame.vue";
  18 import Chat from "@/components/Chat.vue";
  19 import { store } from "@/store";
  20 import { GameStorage } from "@/utils/gameStorage";
  21 import { ppt } from "@/utils/datetime";
  22 import { extractTime } from "@/utils/timeControl";
  23 import { ArrayFun } from "@/utils/array";
  24
  25 export default {
  26   name: 'my-game',
  27   components: {
  28     BaseGame,
  29     Chat,
  30   },
  31   // gameRef: to find the game in (potentially remote) storage
  32   data: function() {
  33     return {
  34       st: store.state,
  35       gameRef: { //given in URL (rid = remote ID)
  36         id: "",
  37         rid: ""
  38       },
  39       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  40       corrMsg: "", //to send offline messages in corr games
  41       virtualClocks: [0, 0], //initialized with true game.clocks
  42       vr: null, //"variant rules" object initialized from FEN
  43       drawOffer: "", //TODO: use for button style
  44       people: [], //players + observers
  45       lastate: undefined, //used if opponent send lastate before game is ready
  46     };
  47   },
  48   watch: {
  49     "$route": function(to, from) {
  50       this.gameRef.id = to.params["id"];
  51       this.gameRef.rid = to.query["rid"];
  52       this.loadGame();
  53     },
  54     "game.clocks": function(newState) {
  55       if (this.game.moves.length < 2 || this.game.score != "*")
  56       {
  57         // 1st move not completed yet, or game over: freeze time
  58         this.virtualClocks = newState.map(s => ppt(s));
  59         return;
  60       }
  61       const currentTurn = this.vr.turn;
  62       const colorIdx = ["w","b"].indexOf(currentTurn);
  63       let countdown = newState[colorIdx] -
  64         (Date.now() - this.game.initime[colorIdx])/1000;
  65       this.virtualClocks = [0,1].map(i => {
  66         const removeTime = i == colorIdx
  67           ? (Date.now() - this.game.initime[colorIdx])/1000
  68           : 0;
  69         return ppt(newState[i] - removeTime);
  70       });
  71       let clockUpdate = setInterval(() => {
  72         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  73         {
  74           clearInterval(clockUpdate);
  75           if (countdown < 0)
  76           {
  77             this.$refs["basegame"].endGame(
  78               this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  79           }
  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           // NOTE: this call to play() will trigger processMove()
 200           this.$refs["basegame"].play(data.move,
 201             "receive", this.game.vname!="Dark" ? "animate" : null);
 202           break;
 203         case "lastate": //got opponent infos about last move
 204         {
 205           this.lastate = data;
 206           if (!!this.game.type) //game is loaded
 207             this.processLastate();
 208           //else: will be processed when game is ready
 209           break;
 210         }
 211         case "resign":
 212           this.$refs["basegame"].endGame(
 213             (data.side=="b" ? "1-0" : "0-1"), "Resign");
 214           break;
 215         case "abort":
 216           this.$refs["basegame"].endGame("?", "Abort");
 217           break;
 218         case "draw":
 219           this.$refs["basegame"].endGame("1/2", "Mutual agreement");
 220           break;
 221         case "drawoffer":
 222           this.drawOffer = "received"; //TODO: observers don't know who offered draw
 223           break;
 224         case "askfullgame":
 225           this.st.conn.send(JSON.stringify({code:"fullgame", game:this.game, target:data.from}));
 226           break;
 227         case "fullgame":
 228           // Callback "roomInit" to poll clients only after game is loaded
 229           this.loadGame(data.game, this.roomInit);
 230           break;
 231         case "connect":
 232         {
 233           this.people.push({name:"", id:0, sid:data.from});
 234           this.st.conn.send(JSON.stringify({code:"askidentity", target:data.from}));
 235           break;
 236         }
 237         case "disconnect":
 238           ArrayFun.remove(this.people, p => p.sid == data.from);
 239           break;
 240       }
 241     },
 242     // lastate was received, but maybe game wasn't ready yet:
 243     processLastate: function() {
 244       const data = this.lastate;
 245       this.lastate = undefined; //security...
 246       const L = this.game.moves.length;
 247       if (data.movesCount > L)
 248       {
 249         // Just got last move from him
 250         this.$refs["basegame"].play(data.lastMove,
 251           "receive", this.game.vname!="Dark" ? "animate" : null);
 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.$refs["basegame"].endGame(data.score, "Opponent action");
 257         }
 258         this.game.clocks = data.clocks; //TODO: check this?
 259         if (!!data.lastMove.draw)
 260           this.drawOffer = "received";
 261       }
 262     },
 263     offerDraw: function() {
 264       if (this.drawOffer == "received")
 265       {
 266         if (!confirm("Accept draw?"))
 267           return;
 268         this.people.forEach(p => {
 269           if (p.sid != this.st.user.sid)
 270             this.st.conn.send(JSON.stringify({code:"draw", target:p.sid}));
 271         });
 272         this.$refs["basegame"].endGame("1/2", "Mutual agreement");
 273       }
 274       else if (this.drawOffer == "sent")
 275       {
 276         this.drawOffer = "";
 277         if (this.game.type == "corr")
 278           GameStorage.update(this.gameRef.id, {drawOffer: false});
 279       }
 280       else
 281       {
 282         if (!confirm("Offer draw?"))
 283           return;
 284         this.drawOffer = "sent";
 285         this.people.forEach(p => {
 286           if (p.sid != this.st.user.sid)
 287             this.st.conn.send(JSON.stringify({code:"drawoffer", target:p.sid}));
 288         });
 289         if (this.game.type == "corr")
 290           GameStorage.update(this.gameRef.id, {drawOffer: true});
 291       }
 292     },
 293     abortGame: function() {
 294       if (!confirm(this.st.tr["Terminate game?"]))
 295         return;
 296       // Next line will trigger a "gameover" event, bubbling up till here
 297       this.$refs["basegame"].endGame("?", "Abort");
 298       this.people.forEach(p => {
 299         if (p.sid != this.st.user.sid)
 300         {
 301           this.st.conn.send(JSON.stringify({
 302             code: "abort",
 303             target: p.sid,
 304           }));
 305         }
 306       });
 307     },
 308     resign: function(e) {
 309       if (!confirm("Resign the game?"))
 310         return;
 311       this.people.forEach(p => {
 312         if (p.sid != this.st.user.sid)
 313         {
 314           this.st.conn.send(JSON.stringify({code:"resign",
 315             side:this.game.mycolor, target:p.sid}));
 316         }
 317       });
 318       // Next line will trigger a "gameover" event, bubbling up till here
 319       this.$refs["basegame"].endGame(
 320         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         if (this.game.type == "corr" && this.corrMsg != "")
 466         {
 467           // Add message to last move in BaseGame:
 468           // TODO: not very good style...
 469           this.$refs["basegame"].setCurrentMessage(this.corrMsg);
 470         }
 471       }
 472       else
 473         addTime = move.addTime; //supposed transmitted
 474       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 475       // Since corr games are stored at only one location, update should be
 476       // done only by one player for each move:
 477       if (this.game.type == "live" || move.color == this.game.mycolor)
 478       {
 479         if (this.game.type == "corr")
 480         {
 481           GameStorage.update(this.gameRef.id,
 482           {
 483             fen: move.fen,
 484             move:
 485             {
 486               squares: filtered_move,
 487               message: this.corrMsg,
 488               played: Date.now(), //TODO: on server?
 489               idx: this.game.moves.length,
 490             },
 491           });
 492         }
 493         else //live
 494         {
 495           GameStorage.update(this.gameRef.id,
 496           {
 497             fen: move.fen,
 498             move: filtered_move,
 499             clocks: this.game.clocks.map((t,i) => i==colorIdx
 500               ? this.game.clocks[i] + addTime
 501               : this.game.clocks[i]),
 502             initime: this.game.initime.map((t,i) => i==nextIdx
 503               ? Date.now()
 504               : this.game.initime[i]),
 505           });
 506         }
 507       }
 508       // Also update current game object:
 509       this.game.moves.push(move);
 510       this.game.fen = move.fen;
 511       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 512       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 513       this.game.initime[nextIdx] = Date.now();
 514       // Finally reset curMoveMessage if needed
 515       if (this.game.type == "corr" && move.color == this.game.mycolor)
 516         this.corrMsg = "";
 517     },
 518     gameOver: function(score) {
 519       this.game.mode = "analyze";
 520       this.game.score = score;
 521       const myIdx = this.game.players.findIndex(p => {
 522         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 523       });
 524       if (myIdx >= 0) //OK, I play in this game
 525         GameStorage.update(this.gameRef.id, { score: score });
 526     },
 527   },
 528 };
 529 </script>
 530
 531 <style lang="sass">
 532 // TODO
 533 </style>