client/src/views/Game.vue

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