client/src/views/Game.vue

   1 <template lang="pug">
   2 main
   3   input#modalChat.modal(type="checkbox" @change="toggleChat")
   4   div(role="dialog" aria-labelledby="inputChat")
   5     #chat.card
   6       label.modal-close(for="modalChat")
   7       Chat(:players="game.players" :pastChats="game.chats"
   8         @newchat-sent="finishSendChat" @newchat-received="processChat")
   9   .row
  10     .col-sm-12.col-md-9.col-md-offset-3.col-lg-10.col-lg-offset-2
  11       #actions(v-if="game.mode!='analyze' && game.score=='*'")
  12         button(@click="offerDraw") Draw
  13         button(@click="abortGame") Abort
  14         button(@click="resign") Resign
  15       button#chatBtn(onClick="doClick('modalChat')") Chat
  16       div Names: {{ game.players[0].name }} - {{ game.players[1].name }}
  17       div(v-if="game.score=='*'") Time: {{ virtualClocks[0] }} - {{ virtualClocks[1] }}
  18   BaseGame(:game="game" :vr="vr" ref="basegame"
  19     @newmove="processMove" @gameover="gameOver")
  20 </template>
  21
  22 <script>
  23 import BaseGame from "@/components/BaseGame.vue";
  24 import Chat from "@/components/Chat.vue";
  25 import { store } from "@/store";
  26 import { GameStorage } from "@/utils/gameStorage";
  27 import { ppt } from "@/utils/datetime";
  28 import { extractTime } from "@/utils/timeControl";
  29 import { ArrayFun } from "@/utils/array";
  30
  31 export default {
  32   name: 'my-game',
  33   components: {
  34     BaseGame,
  35     Chat,
  36   },
  37   // gameRef: to find the game in (potentially remote) storage
  38   data: function() {
  39     return {
  40       st: store.state,
  41       gameRef: { //given in URL (rid = remote ID)
  42         id: "",
  43         rid: ""
  44       },
  45       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  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     "$route": function(to, from) {
  56       this.gameRef.id = to.params["id"];
  57       this.gameRef.rid = to.query["rid"];
  58       this.loadGame();
  59     },
  60     "game.clocks": function(newState) {
  61       if (this.game.moves.length < 2 || this.game.score != "*")
  62       {
  63         // 1st move not completed yet, or game over: freeze time
  64         this.virtualClocks = newState.map(s => ppt(s));
  65         return;
  66       }
  67       const currentTurn = this.vr.turn;
  68       const colorIdx = ["w","b"].indexOf(currentTurn);
  69       let countdown = newState[colorIdx] -
  70         (Date.now() - this.game.initime[colorIdx])/1000;
  71       this.virtualClocks = [0,1].map(i => {
  72         const removeTime = i == colorIdx
  73           ? (Date.now() - this.game.initime[colorIdx])/1000
  74           : 0;
  75         return ppt(newState[i] - removeTime);
  76       });
  77       let clockUpdate = setInterval(() => {
  78         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  79         {
  80           clearInterval(clockUpdate);
  81           if (countdown < 0)
  82             this.gameOver(this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  83         }
  84         else
  85         {
  86           // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
  87           this.$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.$set(this.game, "moveToPlay", data.move); //TODO: Vue3...
 203           break;
 204         case "lastate": //got opponent infos about last move
 205         {
 206           this.lastate = data;
 207           if (!!this.game.type) //game is loaded
 208             this.processLastate();
 209           //else: will be processed when game is ready
 210           break;
 211         }
 212         case "resign":
 213           this.gameOver(data.side=="b" ? "1-0" : "0-1", "Resign");
 214           break;
 215         case "abort":
 216           this.gameOver("?", "Abort");
 217           break;
 218         case "draw":
 219           this.gameOver("1/2", "Mutual agreement");
 220           break;
 221         case "drawoffer":
 222           this.drawOffer = "received"; //TODO: observers don't know who offered draw
 223           break;
 224         case "askfullgame":
 225           this.st.conn.send(JSON.stringify({code:"fullgame", game:this.game, target:data.from}));
 226           break;
 227         case "fullgame":
 228           // Callback "roomInit" to poll clients only after game is loaded
 229           this.loadGame(data.game, this.roomInit);
 230           break;
 231         case "connect":
 232         {
 233           this.people.push({name:"", id:0, sid:data.from});
 234           this.st.conn.send(JSON.stringify({code:"askidentity", target:data.from}));
 235           break;
 236         }
 237         case "disconnect":
 238           ArrayFun.remove(this.people, p => p.sid == data.from);
 239           break;
 240       }
 241     },
 242     // lastate was received, but maybe game wasn't ready yet:
 243     processLastate: function() {
 244       const data = this.lastate;
 245       this.lastate = undefined; //security...
 246       const L = this.game.moves.length;
 247       if (data.movesCount > L)
 248       {
 249         // Just got last move from him
 250         this.$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 (["received","threerep"].includes(this.drawOffer))
 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         const message = (this.drawOffer == "received"
 272           ? "Mutual agreement"
 273           : "Three repetitions");
 274         this.gameOver("1/2", message);
 275       }
 276       else if (this.drawOffer == "sent")
 277       {
 278         this.drawOffer = "";
 279         if (this.game.type == "corr")
 280           GameStorage.update(this.gameRef.id, {drawOffer: false});
 281       }
 282       else
 283       {
 284         if (!confirm("Offer draw?"))
 285           return;
 286         this.drawOffer = "sent";
 287         this.people.forEach(p => {
 288           if (p.sid != this.st.user.sid)
 289             this.st.conn.send(JSON.stringify({code:"drawoffer", target:p.sid}));
 290         });
 291         if (this.game.type == "corr")
 292           GameStorage.update(this.gameRef.id, {drawOffer: true});
 293       }
 294     },
 295     abortGame: function() {
 296       if (!confirm(this.st.tr["Terminate game?"]))
 297         return;
 298       this.gameOver("?", "Abort");
 299       this.people.forEach(p => {
 300         if (p.sid != this.st.user.sid)
 301         {
 302           this.st.conn.send(JSON.stringify({
 303             code: "abort",
 304             target: p.sid,
 305           }));
 306         }
 307       });
 308     },
 309     resign: function(e) {
 310       if (!confirm("Resign the game?"))
 311         return;
 312       this.people.forEach(p => {
 313         if (p.sid != this.st.user.sid)
 314         {
 315           this.st.conn.send(JSON.stringify({code:"resign",
 316             side:this.game.mycolor, target:p.sid}));
 317         }
 318       });
 319       this.gameOver(this.game.mycolor=="w" ? "0-1" : "1-0", "Resign");
 320     },
 321     // 3 cases for loading a game:
 322     //  - from indexedDB (running or completed live game I play)
 323     //  - from server (one correspondance game I play[ed] or not)
 324     //  - from remote peer (one live game I don't play, finished or not)
 325     loadGame: function(game, callback) {
 326       const afterRetrieval = async (game) => {
 327         const vModule = await import("@/variants/" + game.vname + ".js");
 328         window.V = vModule.VariantRules;
 329         this.vr = new V(game.fen);
 330         const gtype = (game.timeControl.indexOf('d') >= 0 ? "corr" : "live");
 331         const tc = extractTime(game.timeControl);
 332         if (gtype == "corr")
 333         {
 334           if (game.players[0].color == "b")
 335           {
 336             // Adopt the same convention for live and corr games: [0] = white
 337             [ game.players[0], game.players[1] ] =
 338               [ game.players[1], game.players[0] ];
 339           }
 340           // corr game: needs to compute the clocks + initime
 341           // NOTE: clocks in seconds, initime in milliseconds
 342           game.clocks = [tc.mainTime, tc.mainTime];
 343           game.moves.sort((m1,m2) => m1.idx - m2.idx); //in case of
 344           if (game.score == "*") //otherwise no need to bother with time
 345           {
 346             game.initime = [0, 0];
 347             const L = game.moves.length;
 348             if (L >= 3)
 349             {
 350               let addTime = [0, 0];
 351               for (let i=2; i<L; i++)
 352               {
 353                 addTime[i%2] += tc.increment -
 354                   (game.moves[i].played - game.moves[i-1].played) / 1000;
 355               }
 356               for (let i=0; i<=1; i++)
 357                 game.clocks[i] += addTime[i];
 358             }
 359             if (L >= 1)
 360               game.initime[L%2] = game.moves[L-1].played;
 361             if (game.drawOffer)
 362               this.drawOffer = "received";
 363           }
 364           // Now that we used idx and played, re-format moves as for live games
 365           game.moves = game.moves.map( (m) => {
 366             const s = m.squares;
 367             return {
 368               appear: s.appear,
 369               vanish: s.vanish,
 370               start: s.start,
 371               end: s.end,
 372             };
 373           });
 374           // Also sort chat messages (if any)
 375           game.chats.sort( (c1,c2) => { return c2.added - c1.added; });
 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         this.repeat = {}; //reset
 411         if (!!this.lastate) //lastate arrived before game was loaded:
 412           this.processLastate();
 413         callback();
 414       };
 415       if (!!game)
 416         return afterRetrieval(game);
 417       if (!!this.gameRef.rid)
 418       {
 419         // Remote live game: forgetting about callback func... (TODO: design)
 420         this.st.conn.send(JSON.stringify(
 421           {code:"askfullgame", target:this.gameRef.rid}));
 422       }
 423       else
 424       {
 425         // Local or corr game
 426         GameStorage.get(this.gameRef.id, afterRetrieval);
 427       }
 428     },
 429     // Post-process a move (which was just played)
 430     processMove: function(move) {
 431       // Update storage (corr or live) if I play in the game
 432       const colorIdx = ["w","b"].indexOf(move.color);
 433       // https://stackoverflow.com/a/38750895
 434       if (!!this.game.mycolor)
 435       {
 436         const allowed_fields = ["appear", "vanish", "start", "end"];
 437         // NOTE: 'var' to see this variable outside this block
 438         var 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       }
 445       // Send move ("newmove" event) to people in the room (if our turn)
 446       let addTime = 0;
 447       if (move.color == this.game.mycolor)
 448       {
 449         if (this.game.moves.length >= 2) //after first move
 450         {
 451           const elapsed = Date.now() - this.game.initime[colorIdx];
 452           // elapsed time is measured in milliseconds
 453           addTime = this.game.increment - elapsed/1000;
 454         }
 455         let sendMove = Object.assign({}, filtered_move, {addTime: addTime});
 456         this.people.forEach(p => {
 457           if (p.sid != this.st.user.sid)
 458           {
 459             this.st.conn.send(JSON.stringify({
 460               code: "newmove",
 461               target: p.sid,
 462               move: sendMove,
 463             }));
 464           }
 465         });
 466       }
 467       else
 468         addTime = move.addTime; //supposed transmitted
 469       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 470       // Since corr games are stored at only one location, update should be
 471       // done only by one player for each move:
 472       if (!!this.game.mycolor &&
 473         (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             move:
 481             {
 482               squares: filtered_move,
 483               played: Date.now(), //TODO: on server?
 484               idx: this.game.moves.length,
 485             },
 486           });
 487         }
 488         else //live
 489         {
 490           GameStorage.update(this.gameRef.id,
 491           {
 492             fen: move.fen,
 493             move: filtered_move,
 494             clocks: this.game.clocks.map((t,i) => i==colorIdx
 495               ? this.game.clocks[i] + addTime
 496               : this.game.clocks[i]),
 497             initime: this.game.initime.map((t,i) => i==nextIdx
 498               ? Date.now()
 499               : this.game.initime[i]),
 500           });
 501         }
 502       }
 503       // Also update current game object:
 504       this.game.moves.push(move);
 505       this.game.fen = move.fen;
 506       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 507       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 508       this.game.initime[nextIdx] = Date.now();
 509       // If repetition detected, consider that a draw offer was received:
 510       const fenObj = V.ParseFen(move.fen);
 511       let repIdx = fenObj.position + "_" + fenObj.turn;
 512       if (!!fenObj.flags)
 513         repIdx += "_" + fenObj.flags;
 514       this.repeat[repIdx] = (!!this.repeat[repIdx]
 515         ? this.repeat[repIdx]+1
 516         : 1);
 517       if (this.repeat[repIdx] >= 3)
 518         this.drawOffer = "threerep";
 519     },
 520     toggleChat: function() {
 521       document.getElementById("chatBtn").style.backgroundColor = "#e2e2e2";
 522     },
 523     finishSendChat: function(chat) {
 524       if (this.game.type == "corr")
 525         GameStorage.update(this.gameRef.id, {chat: chat});
 526     },
 527     processChat: function() {
 528       if (!document.getElementById("inputChat").checked)
 529         document.getElementById("chatBtn").style.backgroundColor = "#c5fefe";
 530     },
 531     gameOver: function(score, scoreMsg) {
 532       this.game.mode = "analyze";
 533       this.game.score = score;
 534       this.game.scoreMsg = scoreMsg;
 535       const myIdx = this.game.players.findIndex(p => {
 536         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 537       });
 538       if (myIdx >= 0) //OK, I play in this game
 539         GameStorage.update(this.gameRef.id, { score: score });
 540     },
 541   },
 542 };
 543 </script>
 544
 545 <style lang="sass">
 546 .connected
 547   background-color: green
 548 .disconnected
 549   background-color: red
 550
 551 @media screen and (min-width: 768px)
 552   #actions
 553     width: 300px
 554 @media screen and (max-width: 767px)
 555   .game
 556     width: 100%
 557
 558 #actions
 559   margin-top: 10px
 560   margin-left: auto
 561   margin-right: auto
 562   button
 563     display: inline-block
 564     width: 33%
 565     margin: 0
 566
 567 #chat
 568   padding-top: 20px
 569   max-width: 600px
 570   border: none;
 571 </style>