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