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     div(v-if="game.type=='corr'") {{ game.corrMsg }}
  13     textarea(v-if="game.score=='*'" v-model="corrMsg")
  14     Chat(:players="game.players")
  15 </template>
  16
  17 <script>
  18 import BaseGame from "@/components/BaseGame.vue";
  19 import Chat from "@/components/Chat.vue";
  20 import { store } from "@/store";
  21 import { GameStorage } from "@/utils/gameStorage";
  22 import { ppt } from "@/utils/datetime";
  23 import { extractTime } from "@/utils/timeControl";
  24 import { ArrayFun } from "@/utils/array";
  25
  26 export default {
  27   name: 'my-game',
  28   components: {
  29     BaseGame,
  30     Chat,
  31   },
  32   // gameRef: to find the game in (potentially remote) storage
  33   data: function() {
  34     return {
  35       st: store.state,
  36       gameRef: { //given in URL (rid = remote ID)
  37         id: "",
  38         rid: ""
  39       },
  40       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  41       corrMsg: "", //to send offline messages in corr games
  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     };
  48   },
  49   watch: {
  50     "$route": function(to, from) {
  51       this.gameRef.id = to.params["id"];
  52       this.gameRef.rid = to.query["rid"];
  53       this.loadGame();
  54     },
  55     "game.clocks": function(newState) {
  56       if (this.game.moves.length < 2 || this.game.score != "*")
  57       {
  58         // 1st move not completed yet, or game over: freeze time
  59         this.virtualClocks = newState.map(s => ppt(s));
  60         return;
  61       }
  62       const currentTurn = this.vr.turn;
  63       const colorIdx = ["w","b"].indexOf(currentTurn);
  64       let countdown = newState[colorIdx] -
  65         (Date.now() - this.game.initime[colorIdx])/1000;
  66       this.virtualClocks = [0,1].map(i => {
  67         const removeTime = i == colorIdx
  68           ? (Date.now() - this.game.initime[colorIdx])/1000
  69           : 0;
  70         return ppt(newState[i] - removeTime);
  71       });
  72       let clockUpdate = setInterval(() => {
  73         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  74         {
  75           clearInterval(clockUpdate);
  76           if (countdown < 0)
  77             this.setScore(this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  78         }
  79         else
  80         {
  81           // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
  82           this.$set(this.virtualClocks, colorIdx, ppt(Math.max(0, --countdown)));
  83         }
  84       }, 1000);
  85     },
  86   },
  87   // TODO: redundant code with Hall.vue (related to people array)
  88   created: function() {
  89     // Always add myself to players' list
  90     const my = this.st.user;
  91     this.people.push({sid:my.sid, id:my.id, name:my.name});
  92     this.gameRef.id = this.$route.params["id"];
  93     this.gameRef.rid = this.$route.query["rid"]; //may be undefined
  94     // Define socket .onmessage() and .onclose() events:
  95     this.st.conn.onmessage = this.socketMessageListener;
  96     const socketCloseListener = () => {
  97       store.socketCloseListener(); //reinitialize connexion (in store.js)
  98       this.st.conn.addEventListener('message', this.socketMessageListener);
  99       this.st.conn.addEventListener('close', socketCloseListener);
 100     };
 101     this.st.conn.onclose = socketCloseListener;
 102     // Socket init required before loading remote game:
 103     const socketInit = (callback) => {
 104       if (!!this.st.conn && this.st.conn.readyState == 1) //1 == OPEN state
 105         callback();
 106       else //socket not ready yet (initial loading)
 107         this.st.conn.onopen = callback;
 108     };
 109     if (!this.gameRef.rid) //game stored locally or on server
 110       this.loadGame(null, () => socketInit(this.roomInit));
 111     else //game stored remotely: need socket to retrieve it
 112     {
 113       // NOTE: the callback "roomInit" will be lost, so we don't provide it.
 114       // --> It will be given when receiving "fullgame" socket event.
 115       // A more general approach would be to store it somewhere.
 116       socketInit(this.loadGame);
 117     }
 118   },
 119   methods: {
 120     // O.1] Ask server for room composition:
 121     roomInit: function() {
 122       this.st.conn.send(JSON.stringify({code:"pollclients"}));
 123     },
 124     socketMessageListener: function(msg) {
 125       const data = JSON.parse(msg.data);
 126       switch (data.code)
 127       {
 128         case "duplicate":
 129           alert("Warning: duplicate 'offline' connection");
 130           break;
 131         // 0.2] Receive clients list (just socket IDs)
 132         case "pollclients":
 133         {
 134           data.sockIds.forEach(sid => {
 135             this.people.push({sid:sid, id:0, name:""});
 136             // Ask only identity
 137             this.st.conn.send(JSON.stringify({code:"askidentity", target:sid}));
 138           });
 139           break;
 140         }
 141         case "askidentity":
 142         {
 143           // Request for identification: reply if I'm not anonymous
 144           if (this.st.user.id > 0)
 145           {
 146             this.st.conn.send(JSON.stringify(
 147               // people[0] instead of st.user to avoid sending email
 148               {code:"identity", user:this.people[0], target:data.from}));
 149           }
 150           break;
 151         }
 152         case "identity":
 153         {
 154           let player = this.people.find(p => p.sid == data.user.sid);
 155           // NOTE: sometimes player.id fails because player is undefined...
 156           // Probably because the event was meant for Hall?
 157           if (!player)
 158             return;
 159           player.id = data.user.id;
 160           player.name = data.user.name;
 161           // Sending last state only for live games: corr games are complete
 162           if (this.game.type == "live" && this.game.oppsid == player.sid)
 163           {
 164             // Send our "last state" informations to opponent
 165             const L = this.game.moves.length;
 166             let lastMove = (L>0 ? this.game.moves[L-1] : undefined);
 167             if (!!lastMove && this.drawOffer == "sent")
 168               lastMove.draw = true;
 169             this.st.conn.send(JSON.stringify({
 170               code: "lastate",
 171               target: player.sid,
 172               state:
 173               {
 174                 lastMove: lastMove,
 175                 score: this.game.score,
 176                 movesCount: L,
 177                 clocks: this.game.clocks,
 178               }
 179             }));
 180           }
 181           break;
 182         }
 183         case "askgame":
 184           // Send current (live) game
 185           const myGame =
 186           {
 187             // Minimal game informations:
 188             id: this.game.id,
 189             players: this.game.players.map(p => { return {name:p.name}; }),
 190             vid: this.game.vid,
 191             timeControl: this.game.timeControl,
 192           };
 193           this.st.conn.send(JSON.stringify({code:"game",
 194             game:myGame, target:data.from}));
 195           break;
 196         case "newmove":
 197           this.corrMsg = data.move.message; //may be empty
 198           this.game.moveToPlay = data.move;
 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.setScore(data.side=="b" ? "1-0" : "0-1", "Resign");
 210           break;
 211         case "abort":
 212           this.setScore("?", "Abort");
 213           break;
 214         case "draw":
 215           this.setScore("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.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.setScore(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     setScore: function(score, message) {
 259       this.game.scoreMsg = message;
 260       this.game.score = score;
 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.setScore("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.setScore("?", "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.setScore(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         if (!!this.lastate) //lastate arrived before game was loaded:
 407           this.processLastate();
 408         callback();
 409       };
 410       if (!!game)
 411         return afterRetrieval(game);
 412       if (!!this.gameRef.rid)
 413       {
 414         // Remote live game: forgetting about callback func... (TODO: design)
 415         this.st.conn.send(JSON.stringify(
 416           {code:"askfullgame", target:this.gameRef.rid}));
 417       }
 418       else
 419       {
 420         // Local or corr game
 421         GameStorage.get(this.gameRef.id, afterRetrieval);
 422       }
 423     },
 424     // Post-process a move (which was just played)
 425     processMove: function(move) {
 426       if (!this.game.mycolor)
 427         return; //I'm just an observer
 428       // Update storage (corr or live)
 429       const colorIdx = ["w","b"].indexOf(move.color);
 430       // https://stackoverflow.com/a/38750895
 431       const allowed_fields = ["appear", "vanish", "start", "end"];
 432       const filtered_move = Object.keys(move)
 433         .filter(key => allowed_fields.includes(key))
 434         .reduce((obj, key) => {
 435           obj[key] = move[key];
 436           return obj;
 437         }, {});
 438       // Send move ("newmove" event) to people in the room (if our turn)
 439       let addTime = 0;
 440       if (move.color == this.game.mycolor)
 441       {
 442         if (this.game.moves.length >= 2) //after first move
 443         {
 444           const elapsed = Date.now() - this.game.initime[colorIdx];
 445           // elapsed time is measured in milliseconds
 446           addTime = this.game.increment - elapsed/1000;
 447         }
 448         let sendMove = Object.assign({}, filtered_move, {addTime: addTime});
 449         if (this.game.type == "corr")
 450           sendMove.message = this.corrMsg;
 451         this.people.forEach(p => {
 452           if (p.sid != this.st.user.sid)
 453           {
 454             this.st.conn.send(JSON.stringify({
 455               code: "newmove",
 456               target: p.sid,
 457               move: sendMove,
 458             }));
 459           }
 460         });
 461       }
 462       else
 463         addTime = move.addTime; //supposed transmitted
 464       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 465       // Since corr games are stored at only one location, update should be
 466       // done only by one player for each move:
 467       if (this.game.type == "live" || move.color == this.game.mycolor)
 468       {
 469         if (this.game.type == "corr")
 470         {
 471           GameStorage.update(this.gameRef.id,
 472           {
 473             fen: move.fen,
 474             message: this.corrMsg,
 475             move:
 476             {
 477               squares: filtered_move,
 478               played: Date.now(), //TODO: on server?
 479               idx: this.game.moves.length,
 480             },
 481           });
 482         }
 483         else //live
 484         {
 485           GameStorage.update(this.gameRef.id,
 486           {
 487             fen: move.fen,
 488             move: filtered_move,
 489             clocks: this.game.clocks.map((t,i) => i==colorIdx
 490               ? this.game.clocks[i] + addTime
 491               : this.game.clocks[i]),
 492             initime: this.game.initime.map((t,i) => i==nextIdx
 493               ? Date.now()
 494               : this.game.initime[i]),
 495           });
 496         }
 497       }
 498       // Also update current game object:
 499       this.game.moves.push(move);
 500       this.game.fen = move.fen;
 501       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 502       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 503       this.game.initime[nextIdx] = Date.now();
 504     },
 505     gameOver: function(score) {
 506       this.game.mode = "analyze";
 507       this.game.score = score;
 508       const myIdx = this.game.players.findIndex(p => {
 509         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 510       });
 511       if (myIdx >= 0) //OK, I play in this game
 512         GameStorage.update(this.gameRef.id, { score: score });
 513     },
 514   },
 515 };
 516 </script>
 517
 518 <style lang="sass">
 519 // TODO
 520 </style>