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