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