client/src/views/Game.vue

   1 <template lang="pug">
   2 main
   3   input#modalChat.modal(type="checkbox" @click="resetChatColor")
   4   div#chatWrap(role="dialog" data-checkbox="modalChat"
   5       aria-labelledby="inputChat")
   6     #chat.card
   7       label.modal-close(for="modalChat")
   8       #participants
   9         span {{ Object.keys(people).length }} participant(s):
  10         span(v-for="p in Object.values(people)" v-if="!!p.name")
  11           | {{ p.name }}
  12         span.anonymous(v-if="Object.values(people).some(p => !p.name)")
  13           | + @nonymous
  14       Chat(:players="game.players" :pastChats="game.chats"
  15         @newchat-sent="finishSendChat" @newchat-received="processChat")
  16   .row
  17     #aboveBoard.col-sm-12.col-md-9.col-md-offset-3.col-lg-10.col-lg-offset-2
  18       button#chatBtn(onClick="doClick('modalChat')") Chat
  19       #actions(v-if="game.score=='*'")
  20         button(@click="clickDraw" :class="{['draw-' + drawOffer]: true}") Draw
  21         button(@click="abortGame") Abort
  22         button(@click="resign") Resign
  23       #playersInfo
  24         p
  25           span.name(:class="{connected: isConnected(0)}")
  26             | {{ game.players[0].name || "@nonymous" }}
  27           span.time(v-if="game.score=='*'") {{ virtualClocks[0] }}
  28           span.split-names -
  29           span.name(:class="{connected: isConnected(1)}")
  30             | {{ game.players[1].name || "@nonymous" }}
  31           span.time(v-if="game.score=='*'") {{ virtualClocks[1] }}
  32   BaseGame(:game="game" :vr="vr" ref="basegame"
  33     @newmove="processMove" @gameover="gameOver")
  34 </template>
  35
  36 <script>
  37 import BaseGame from "@/components/BaseGame.vue";
  38 import Chat from "@/components/Chat.vue";
  39 import { store } from "@/store";
  40 import { GameStorage } from "@/utils/gameStorage";
  41 import { ppt } from "@/utils/datetime";
  42 import { extractTime } from "@/utils/timeControl";
  43 import { ArrayFun } from "@/utils/array";
  44 import { processModalClick } from "@/utils/modalClick";
  45
  46 export default {
  47   name: 'my-game',
  48   components: {
  49     BaseGame,
  50     Chat,
  51   },
  52   // gameRef: to find the game in (potentially remote) storage
  53   data: function() {
  54     return {
  55       st: store.state,
  56       gameRef: { //given in URL (rid = remote ID)
  57         id: "",
  58         rid: ""
  59       },
  60       game: {players:[{name:""},{name:""}]}, //passed to BaseGame
  61       virtualClocks: [0, 0], //initialized with true game.clocks
  62       vr: null, //"variant rules" object initialized from FEN
  63       drawOffer: "",
  64       people: {}, //players + observers
  65       lastate: undefined, //used if opponent send lastate before game is ready
  66       repeat: {}, //detect position repetition
  67     };
  68   },
  69   watch: {
  70     "$route": function(to, from) {
  71       this.gameRef.id = to.params["id"];
  72       this.gameRef.rid = to.query["rid"];
  73       this.loadGame();
  74     },
  75     "game.clocks": function(newState) {
  76       if (this.game.moves.length < 2 || this.game.score != "*")
  77       {
  78         // 1st move not completed yet, or game over: freeze time
  79         this.virtualClocks = newState.map(s => ppt(s));
  80         return;
  81       }
  82       const currentTurn = this.vr.turn;
  83       const colorIdx = ["w","b"].indexOf(currentTurn);
  84       let countdown = newState[colorIdx] -
  85         (Date.now() - this.game.initime[colorIdx])/1000;
  86       this.virtualClocks = [0,1].map(i => {
  87         const removeTime = i == colorIdx
  88           ? (Date.now() - this.game.initime[colorIdx])/1000
  89           : 0;
  90         return ppt(newState[i] - removeTime);
  91       });
  92       let clockUpdate = setInterval(() => {
  93         if (countdown < 0 || this.vr.turn != currentTurn || this.game.score != "*")
  94         {
  95           clearInterval(clockUpdate);
  96           if (countdown < 0)
  97             this.gameOver(this.vr.turn=="w" ? "0-1" : "1-0", "Time");
  98         }
  99         else
 100         {
 101           // TODO: with Vue 3, just do this.virtualClocks[colorIdx] = ppt(--countdown)
 102           this.$set(this.virtualClocks, colorIdx, ppt(Math.max(0, --countdown)));
 103         }
 104       }, 1000);
 105     },
 106   },
 107   // NOTE: some redundant code with Hall.vue (related to people array)
 108   created: function() {
 109     // Always add myself to players' list
 110     const my = this.st.user;
 111     this.$set(this.people, my.sid, {id:my.id, name:my.name});
 112     this.gameRef.id = this.$route.params["id"];
 113     this.gameRef.rid = this.$route.query["rid"]; //may be undefined
 114     // Define socket .onmessage() and .onclose() events:
 115     this.st.conn.onmessage = this.socketMessageListener;
 116     const socketCloseListener = () => {
 117       store.socketCloseListener(); //reinitialize connexion (in store.js)
 118       this.st.conn.addEventListener('message', this.socketMessageListener);
 119       this.st.conn.addEventListener('close', socketCloseListener);
 120     };
 121     this.st.conn.onclose = socketCloseListener;
 122     // Socket init required before loading remote game:
 123     const socketInit = (callback) => {
 124       if (!!this.st.conn && this.st.conn.readyState == 1) //1 == OPEN state
 125         callback();
 126       else //socket not ready yet (initial loading)
 127         this.st.conn.onopen = callback;
 128     };
 129     if (!this.gameRef.rid) //game stored locally or on server
 130       this.loadGame(null, () => socketInit(this.roomInit));
 131     else //game stored remotely: need socket to retrieve it
 132     {
 133       // NOTE: the callback "roomInit" will be lost, so we don't provide it.
 134       // --> It will be given when receiving "fullgame" socket event.
 135       // A more general approach would be to store it somewhere.
 136       socketInit(this.loadGame);
 137     }
 138   },
 139   mounted: function() {
 140     document.getElementById("chatWrap").addEventListener(
 141       "click", processModalClick);
 142   },
 143   methods: {
 144     // O.1] Ask server for room composition:
 145     roomInit: function() {
 146       // Notify the room only now that I connected, because
 147       // messages might be lost otherwise (if game loading is slow)
 148       this.st.conn.send(JSON.stringify({code:"connect"}));
 149       this.st.conn.send(JSON.stringify({code:"pollclients"}));
 150     },
 151     isConnected: function(index) {
 152       const name = this.game.players[index].name;
 153       if (this.st.user.name == name)
 154         return true;
 155       return Object.values(this.people).some(p => p.name == name);
 156     },
 157     socketMessageListener: function(msg) {
 158       const data = JSON.parse(msg.data);
 159       switch (data.code)
 160       {
 161         case "duplicate":
 162           alert("Warning: duplicate 'offline' connection");
 163           break;
 164         // 0.2] Receive clients list (just socket IDs)
 165         case "pollclients":
 166         {
 167           data.sockIds.forEach(sid => {
 168             if (!!this.people[sid])
 169               return;
 170             this.$set(this.people, sid, {id:0, name:""});
 171             // Ask only identity
 172             this.st.conn.send(JSON.stringify({code:"askidentity", target:sid}));
 173           });
 174           break;
 175         }
 176         case "askidentity":
 177         {
 178           // Request for identification: reply if I'm not anonymous
 179           if (this.st.user.id > 0)
 180           {
 181             this.st.conn.send(JSON.stringify({code:"identity",
 182               user: {
 183                 // NOTE: decompose to avoid revealing email
 184                 name: this.st.user.name,
 185                 sid: this.st.user.sid,
 186                 id: this.st.user.id,
 187               },
 188               target:data.from}));
 189           }
 190           break;
 191         }
 192         case "identity":
 193         {
 194           // NOTE: sometimes player.id fails because player is undefined...
 195           // Probably because the event was meant for Hall?
 196           if (!this.people[data.user.sid])
 197             return;
 198           this.$set(this.people, data.user.sid,
 199             {id: data.user.id, name: data.user.name});
 200           // Sending last state only for live games: corr games are complete
 201           if (this.game.type == "live" && this.game.oppsid == data.user.sid)
 202           {
 203             // Send our "last state" informations to opponent
 204             const L = this.game.moves.length;
 205             let lastMove = (L>0 ? this.game.moves[L-1] : undefined);
 206             if (!!lastMove && this.drawOffer == "sent")
 207               lastMove.draw = true;
 208             this.st.conn.send(JSON.stringify({
 209               code: "lastate",
 210               target: data.user.sid,
 211               state:
 212               {
 213                 lastMove: lastMove,
 214                 score: this.game.score,
 215                 movesCount: L,
 216                 clocks: this.game.clocks,
 217               }
 218             }));
 219           }
 220           break;
 221         }
 222         case "askgame":
 223           // Send current (live) game if not asked by opponent (!)
 224           if (this.game.players.some(p => p.sid == data.from))
 225             return;
 226           const myGame =
 227           {
 228             // Minimal game informations:
 229             id: this.game.id,
 230             players: this.game.players.map(p => { return {name:p.name}; }),
 231             vid: this.game.vid,
 232             timeControl: this.game.timeControl,
 233           };
 234           this.st.conn.send(JSON.stringify({code:"game",
 235             game:myGame, target:data.from}));
 236           break;
 237         case "newmove":
 238           this.$set(this.game, "moveToPlay", data.move);
 239           break;
 240         case "lastate": //got opponent infos about last move
 241         {
 242           this.lastate = data;
 243           if (!!this.game.type) //game is loaded
 244             this.processLastate();
 245           //else: will be processed when game is ready
 246           break;
 247         }
 248         case "resign":
 249           this.gameOver(data.side=="b" ? "1-0" : "0-1", "Resign");
 250           break;
 251         case "abort":
 252           this.gameOver("?", "Abort");
 253           break;
 254         case "draw":
 255           this.gameOver("1/2", data.message);
 256           break;
 257         case "drawoffer":
 258           // NOTE: observers don't know who offered draw
 259           this.drawOffer = "received";
 260           break;
 261         case "askfullgame":
 262           this.st.conn.send(JSON.stringify({code:"fullgame",
 263             game:this.game, target:data.from}));
 264           break;
 265         case "fullgame":
 266           // Callback "roomInit" to poll clients only after game is loaded
 267           this.loadGame(data.game, this.roomInit);
 268           break;
 269         case "connect":
 270         {
 271           // TODO: next condition is probably not required. See note line 150
 272           if (!this.people[data.from])
 273           {
 274             this.$set(this.people, data.from, {name:"", id:0});
 275             this.st.conn.send(JSON.stringify({code:"askidentity", target:data.from}));
 276           }
 277           break;
 278         }
 279         case "disconnect":
 280           this.$delete(this.people, data.from);
 281           break;
 282       }
 283     },
 284     // lastate was received, but maybe game wasn't ready yet:
 285     processLastate: function() {
 286       const data = this.lastate;
 287       this.lastate = undefined; //security...
 288       const L = this.game.moves.length;
 289       if (data.movesCount > L)
 290       {
 291         // Just got last move from him
 292         this.$set(this.game, "moveToPlay", data.lastMove);
 293         if (data.score != "*" && this.game.score == "*")
 294         {
 295           // Opponent resigned or aborted game, or accepted draw offer
 296           // (this is not a stalemate or checkmate)
 297           this.gameOver(data.score, "Opponent action");
 298         }
 299         this.game.clocks = data.clocks; //TODO: check this?
 300         if (!!data.lastMove.draw)
 301           this.drawOffer = "received";
 302       }
 303     },
 304     clickDraw: function() {
 305       if (["received","threerep"].includes(this.drawOffer))
 306       {
 307         if (!confirm("Accept draw?"))
 308           return;
 309         const message = (this.drawOffer == "received"
 310           ? "Mutual agreement"
 311           : "Three repetitions");
 312         Object.keys(this.people).forEach(sid => {
 313           if (sid != this.st.user.sid)
 314           {
 315             this.st.conn.send(JSON.stringify({code:"draw",
 316               message:message, target:sid}));
 317           }
 318         });
 319         this.gameOver("1/2", message);
 320       }
 321       else if (this.drawOffer == "") //no effect if drawOffer == "sent"
 322       {
 323         if (!confirm("Offer draw?"))
 324           return;
 325         this.drawOffer = "sent";
 326         Object.keys(this.people).forEach(sid => {
 327           if (sid != this.st.user.sid)
 328             this.st.conn.send(JSON.stringify({code:"drawoffer", target:sid}));
 329         });
 330         GameStorage.update(this.gameRef.id, {drawOffer: true});
 331       }
 332     },
 333     abortGame: function() {
 334       if (!confirm(this.st.tr["Terminate game?"]))
 335         return;
 336       this.gameOver("?", "Abort");
 337       Object.keys(this.people).forEach(sid => {
 338         if (sid != this.st.user.sid)
 339         {
 340           this.st.conn.send(JSON.stringify({
 341             code: "abort",
 342             target: sid,
 343           }));
 344         }
 345       });
 346     },
 347     resign: function(e) {
 348       if (!confirm("Resign the game?"))
 349         return;
 350       Object.keys(this.people).forEach(sid => {
 351         if (sid != this.st.user.sid)
 352         {
 353           this.st.conn.send(JSON.stringify({code:"resign",
 354             side:this.game.mycolor, target:sid}));
 355         }
 356       });
 357       this.gameOver(this.game.mycolor=="w" ? "0-1" : "1-0", "Resign");
 358     },
 359     // 3 cases for loading a game:
 360     //  - from indexedDB (running or completed live game I play)
 361     //  - from server (one correspondance game I play[ed] or not)
 362     //  - from remote peer (one live game I don't play, finished or not)
 363     loadGame: function(game, callback) {
 364       const afterRetrieval = async (game) => {
 365         const vModule = await import("@/variants/" + game.vname + ".js");
 366         window.V = vModule.VariantRules;
 367         this.vr = new V(game.fen);
 368         const gtype = (game.timeControl.indexOf('d') >= 0 ? "corr" : "live");
 369         const tc = extractTime(game.timeControl);
 370         if (gtype == "corr")
 371         {
 372           if (game.players[0].color == "b")
 373           {
 374             // Adopt the same convention for live and corr games: [0] = white
 375             [ game.players[0], game.players[1] ] =
 376               [ game.players[1], game.players[0] ];
 377           }
 378           // corr game: needs to compute the clocks + initime
 379           // NOTE: clocks in seconds, initime in milliseconds
 380           game.clocks = [tc.mainTime, tc.mainTime];
 381           game.moves.sort((m1,m2) => m1.idx - m2.idx); //in case of
 382           if (game.score == "*") //otherwise no need to bother with time
 383           {
 384             game.initime = [0, 0];
 385             const L = game.moves.length;
 386             if (L >= 3)
 387             {
 388               let addTime = [0, 0];
 389               for (let i=2; i<L; i++)
 390               {
 391                 addTime[i%2] += tc.increment -
 392                   (game.moves[i].played - game.moves[i-1].played) / 1000;
 393               }
 394               for (let i=0; i<=1; i++)
 395                 game.clocks[i] += addTime[i];
 396             }
 397             if (L >= 1)
 398               game.initime[L%2] = game.moves[L-1].played;
 399             if (game.drawOffer)
 400               this.drawOffer = "received";
 401           }
 402           // Now that we used idx and played, re-format moves as for live games
 403           game.moves = game.moves.map( (m) => {
 404             const s = m.squares;
 405             return {
 406               appear: s.appear,
 407               vanish: s.vanish,
 408               start: s.start,
 409               end: s.end,
 410             };
 411           });
 412           // Also sort chat messages (if any)
 413           game.chats.sort( (c1,c2) => { return c2.added - c1.added; });
 414         }
 415         const myIdx = game.players.findIndex(p => {
 416           return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 417         });
 418         if (gtype == "live" && game.clocks[0] < 0) //game unstarted
 419         {
 420           game.clocks = [tc.mainTime, tc.mainTime];
 421           if (game.score == "*")
 422           {
 423             game.initime[0] = Date.now();
 424             if (myIdx >= 0)
 425             {
 426               // I play in this live game; corr games don't have clocks+initime
 427               GameStorage.update(game.id,
 428               {
 429                 clocks: game.clocks,
 430                 initime: game.initime,
 431               });
 432             }
 433           }
 434         }
 435         this.game = Object.assign({},
 436           game,
 437           // NOTE: assign mycolor here, since BaseGame could also be VS computer
 438           {
 439             type: gtype,
 440             increment: tc.increment,
 441             mycolor: [undefined,"w","b"][myIdx+1],
 442             // opponent sid not strictly required (or available), but easier
 443             // at least oppsid or oppid is available anyway:
 444             oppsid: (myIdx < 0 ? undefined : game.players[1-myIdx].sid),
 445             oppid: (myIdx < 0 ? undefined : game.players[1-myIdx].uid),
 446           }
 447         );
 448         this.repeat = {}; //reset
 449         if (!!this.lastate) //lastate arrived before game was loaded:
 450           this.processLastate();
 451         callback();
 452       };
 453       if (!!game)
 454         return afterRetrieval(game);
 455       if (!!this.gameRef.rid)
 456       {
 457         // Remote live game: forgetting about callback func... (TODO: design)
 458         this.st.conn.send(JSON.stringify(
 459           {code:"askfullgame", target:this.gameRef.rid}));
 460       }
 461       else
 462       {
 463         // Local or corr game
 464         GameStorage.get(this.gameRef.id, afterRetrieval);
 465       }
 466     },
 467     // Post-process a move (which was just played)
 468     processMove: function(move) {
 469       // Update storage (corr or live) if I play in the game
 470       const colorIdx = ["w","b"].indexOf(move.color);
 471       // https://stackoverflow.com/a/38750895
 472       if (!!this.game.mycolor)
 473       {
 474         const allowed_fields = ["appear", "vanish", "start", "end"];
 475         // NOTE: 'var' to see this variable outside this block
 476         var filtered_move = Object.keys(move)
 477           .filter(key => allowed_fields.includes(key))
 478           .reduce((obj, key) => {
 479             obj[key] = move[key];
 480             return obj;
 481           }, {});
 482       }
 483       // Send move ("newmove" event) to people in the room (if our turn)
 484       let addTime = 0;
 485       if (move.color == this.game.mycolor)
 486       {
 487         if (this.game.moves.length >= 2) //after first move
 488         {
 489           const elapsed = Date.now() - this.game.initime[colorIdx];
 490           // elapsed time is measured in milliseconds
 491           addTime = this.game.increment - elapsed/1000;
 492         }
 493         let sendMove = Object.assign({}, filtered_move, {addTime: addTime});
 494         Object.keys(this.people).forEach(sid => {
 495           if (sid != this.st.user.sid)
 496           {
 497             this.st.conn.send(JSON.stringify({
 498               code: "newmove",
 499               target: sid,
 500               move: sendMove,
 501             }));
 502           }
 503         });
 504       }
 505       else
 506         addTime = move.addTime; //supposed transmitted
 507       const nextIdx = ["w","b"].indexOf(this.vr.turn);
 508       // Since corr games are stored at only one location, update should be
 509       // done only by one player for each move:
 510       if (!!this.game.mycolor &&
 511         (this.game.type == "live" || move.color == this.game.mycolor))
 512       {
 513         if (this.game.type == "corr")
 514         {
 515           GameStorage.update(this.gameRef.id,
 516           {
 517             fen: move.fen,
 518             move:
 519             {
 520               squares: filtered_move,
 521               played: Date.now(), //TODO: on server?
 522               idx: this.game.moves.length,
 523             },
 524           });
 525         }
 526         else //live
 527         {
 528           GameStorage.update(this.gameRef.id,
 529           {
 530             fen: move.fen,
 531             move: filtered_move,
 532             clocks: this.game.clocks.map((t,i) => i==colorIdx
 533               ? this.game.clocks[i] + addTime
 534               : this.game.clocks[i]),
 535             initime: this.game.initime.map((t,i) => i==nextIdx
 536               ? Date.now()
 537               : this.game.initime[i]),
 538           });
 539         }
 540       }
 541       // Also update current game object:
 542       this.game.moves.push(move);
 543       this.game.fen = move.fen;
 544       //TODO: (Vue3) just this.game.clocks[colorIdx] += addTime;
 545       this.$set(this.game.clocks, colorIdx, this.game.clocks[colorIdx] + addTime);
 546       this.game.initime[nextIdx] = Date.now();
 547       // If repetition detected, consider that a draw offer was received:
 548       const fenObj = V.ParseFen(move.fen);
 549       let repIdx = fenObj.position + "_" + fenObj.turn;
 550       if (!!fenObj.flags)
 551         repIdx += "_" + fenObj.flags;
 552       this.repeat[repIdx] = (!!this.repeat[repIdx]
 553         ? this.repeat[repIdx]+1
 554         : 1);
 555       if (this.repeat[repIdx] >= 3)
 556         this.drawOffer = "threerep";
 557     },
 558     resetChatColor: function() {
 559       // TODO: this is called twice, once on opening an once on closing
 560       document.getElementById("chatBtn").style.backgroundColor = "#e2e2e2";
 561     },
 562     finishSendChat: function(chat) {
 563       // NOTE: anonymous chats in corr games are not stored on server (TODO?)
 564       if (this.game.type == "corr" && this.st.user.id > 0)
 565         GameStorage.update(this.gameRef.id, {chat: chat});
 566     },
 567     processChat: function() {
 568       if (!document.getElementById("modalChat").checked)
 569         document.getElementById("chatBtn").style.backgroundColor = "#c5fefe";
 570     },
 571     gameOver: function(score, scoreMsg) {
 572       this.game.score = score;
 573       this.game.scoreMsg = scoreMsg;
 574       const myIdx = this.game.players.findIndex(p => {
 575         return p.sid == this.st.user.sid || p.uid == this.st.user.id;
 576       });
 577       if (myIdx >= 0) //OK, I play in this game
 578       {
 579         GameStorage.update(this.gameRef.id,
 580           {score: score, scoreMsg: scoreMsg});
 581       }
 582     },
 583   },
 584 };
 585 </script>
 586
 587 <style lang="sass" scoped>
 588 .connected
 589   background-color: lightgreen
 590
 591 #participants
 592   margin-left: 5px
 593
 594 .anonymous
 595   color: grey
 596   font-style: italic
 597
 598 @media screen and (min-width: 768px)
 599   #actions
 600     width: 300px
 601 @media screen and (max-width: 767px)
 602   .game
 603     width: 100%
 604
 605 #actions
 606   display: inline-block
 607   margin-top: 10px
 608   button
 609     display: inline-block
 610     width: 33%
 611     margin: 0
 612
 613 @media screen and (max-width: 767px)
 614   #aboveBoard
 615     text-align: center
 616
 617 .name
 618   font-size: 1.5rem
 619   padding: 1px
 620
 621 .time
 622   font-size: 2rem
 623   display: inline-block
 624   margin-left: 10px
 625
 626 .split-names
 627   display: inline-block
 628   margin: 0 15px
 629
 630 #chat
 631   padding-top: 20px
 632   max-width: 600px
 633   border: none;
 634
 635 #chatBtn
 636   margin: 0 10px 0 0
 637
 638 .draw-sent, .draw-sent:hover
 639   background-color: lightyellow
 640
 641 .draw-received, .draw-received:hover
 642   background-color: lightgreen
 643
 644 .draw-threerep, .draw-threerep:hover
 645   background-color: #e4d1fc
 646 </style>