client/src/views/Game.vue

   1 <!-- TODO: component Game, + handle players + observers connect/disconnect
   2   event = "gameconnect" ...etc
   3   connect/disconnect with sid+name (ID not required); name slightly redundant but easier
   4 quand on arrive dans la partie, on poll les sids pour savoir qui est en ligne (ping)
   5 (éventuel échange lastate avec les connectés, pong ...etc)
   6 ensuite quand qqun se deco il suffit d'écouter "disconnect"
   7 pareil quand quelqu'un reco.
   8 (c'est assez rudimentaire et écoute trop de messages, mais dans un premier temps...)
   9       // TODO: [in game] send move + elapsed time (in milliseconds); in case of "lastate" message too
  10 // TODO: if I'm an observer and player(s) disconnect/reconnect, how to find me ?
  11 //      onClick :: ask full game to remote player, and register as an observer in game
  12 //      (use gameId to communicate)
  13 //      on landing on game :: if gameId not found locally, check remotely
  14 //      ==> il manque un param dans game : "remoteId"
  15 -->
  16 <template lang="pug">
  17 .row
  18   .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
  19     BaseGame(:game="game" :vr="vr" ref="basegame"
  20       @newmove="processMove" @gameover="gameOver")
  21     .button-group(v-if="game.mode!='analyze'")
  22       button(@click="offerDraw") Draw
  23       button(@click="abortGame") Abort
  24       button(@click="resign") Resign
  25     div(v-if="game.mode=='corr'")
  26       textarea(v-show="score=='*' && vr.turn==game.mycolor" v-model="corrMsg")
  27       div(v-show="cursor>=0") {{ moves[cursor].message }}
  28 </template>
  29
  30 <script>
  31 import BaseGame from "@/components/BaseGame.vue";
  32 //import Chat from "@/components/Chat.vue";
  33 //import MoveList from "@/components/MoveList.vue";
  34 import { store } from "@/store";
  35 import { GameStorage } from "@/utils/storage";
  36
  37 export default {
  38   name: 'my-game',
  39   components: {
  40     BaseGame,
  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: { }, //passed to BaseGame
  51       vr: null, //"variant rules" object initialized from FEN
  52       drawOfferSent: false, //did I just ask for draw? (TODO: draw variables?)
  53       people: [ ], //potential observers (TODO)
  54     };
  55   },
  56   watch: {
  57     '$route' (to, from) {
  58       if (!!to.params["id"])
  59       {
  60         this.gameRef.id = to.params["id"];
  61         this.gameRef.rid = to.query["rid"];
  62         this.loadGame();
  63       }
  64     },
  65   },
  66   created: function() {
  67     if (!!this.$route.params["id"])
  68     {
  69       this.gameRef.id = this.$route.params["id"];
  70       this.gameRef.rid = this.$route.query["rid"];
  71       this.loadGame();
  72     }
  73     // TODO: how to know who is observing ? Send message to everyone with game ID ?
  74     // and then just listen to (dis)connect events
  75
  76
  77     // server always send "connect on " + URL ; then add to observers if game...
  78     // detect multiple tabs connected (when connect ask server if my SID is already in use)
  79 // router when access a game page tell to server I joined + game ID (no need rid)
  80 // and ask server for current joined (= observers)
  81 // when send to chat (or a move), reach only this group (send gid along)
  82
  83     // --> doivent être enregistrés comme observers au niveau du serveur...
  84     // non: poll users + events startObserving / stopObserving
  85     // (à faire au niveau du routeur ?)
  86
  87
  88     // TODO: also handle "draw accepted" (use opponents array?)
  89     // --> must give this info also when sending lastState...
  90     // and, if all players agree then OK draw (end game ...etc)
  91     const socketMessageListener = msg => {
  92       const data = JSON.parse(msg.data);
  93       let L = undefined;
  94       switch (data.code)
  95       {
  96         case "newmove":
  97           // TODO: observer on dark games must see all board ? Or alternate ? (seems better)
  98           // ...or just see nothing as on buho21
  99           // NOTE: next call will trigger processMove()
 100           this.$refs["basegame"].play(data.move,
 101             "receive", this.game.vname!="Dark" ? "animate" : null);
 102           break;
 103         case "pong": //received if we sent a ping (game still alive on our side)
 104           if (this.gameRef.id != data.gameId)
 105             break; //games IDs don't match: the game is definitely over...
 106           this.oppConnected = true;
 107           // Send our "last state" informations to opponent(s)
 108           L = this.vr.moves.length;
 109           Object.keys(this.opponents).forEach(oid => {
 110             this.st.conn.send(JSON.stringify({
 111               code: "lastate",
 112               oppid: oid,
 113               gameId: this.gameRef.id,
 114               lastMove: (L>0?this.vr.moves[L-1]:undefined),
 115               movesCount: L,
 116             }));
 117           });
 118           break;
 119         // TODO: refactor this, because at 3 or 4 players we may have missed 2 or 3 moves
 120         case "lastate": //got opponent infos about last move
 121           L = this.vr.moves.length;
 122           if (this.gameRef.id != data.gameId)
 123             break; //games IDs don't match: nothing we can do...
 124           // OK, opponent still in game (which might be over)
 125           if (this.score != "*")
 126           {
 127             // We finished the game (any result possible)
 128             this.st.conn.send(JSON.stringify({
 129               code: "lastate",
 130               oppid: data.oppid,
 131               gameId: this.gameRef.id,
 132               score: this.score,
 133             }));
 134           }
 135           else if (!!data.score) //opponent finished the game
 136             this.endGame(data.score);
 137           else if (data.movesCount < L)
 138           {
 139             // We must tell last move to opponent
 140             this.st.conn.send(JSON.stringify({
 141               code: "lastate",
 142               oppid: this.opponent.id,
 143               gameId: this.gameRef.id,
 144               lastMove: this.vr.moves[L-1],
 145               movesCount: L,
 146             }));
 147           }
 148           else if (data.movesCount > L) //just got last move from him
 149             this.play(data.lastMove, "animate"); //TODO: wrong call (3 args)
 150           break;
 151         case "resign": //..you won!
 152           this.endGame(this.game.mycolor=="w"?"1-0":"0-1");
 153           break;
 154         // TODO: also use (dis)connect info to count online players?
 155         case "gameconnect":
 156         case "gamedisconnect":
 157           if (this.mode=="human")
 158           {
 159             const online = (data.code == "connect");
 160             // If this is an opponent ?
 161             if (!!this.opponents[data.id])
 162               this.opponents[data.id].online = online;
 163             else
 164             {
 165               // Or an observer ?
 166               if (!online)
 167                 delete this.people[data.id];
 168               else
 169                 this.people[data.id] = data.name;
 170             }
 171           }
 172           break;
 173       }
 174     };
 175     const socketCloseListener = () => {
 176       this.st.conn.addEventListener('message', socketMessageListener);
 177       this.st.conn.addEventListener('close', socketCloseListener);
 178     };
 179     this.st.conn.onmessage = socketMessageListener;
 180     this.st.conn.onclose = socketCloseListener;
 181   },
 182   // dans variant.js (plutôt room.js) conn gère aussi les challenges
 183   // et les chats dans chat.js. Puis en webRTC, repenser tout ça.
 184   methods: {
 185     offerDraw: function() {
 186       if (!confirm("Offer draw?"))
 187         return;
 188       // Stay in "draw offer sent" state until next move is played
 189       this.drawOfferSent = true;
 190       if (this.subMode == "corr")
 191       {
 192         // TODO: set drawOffer on in game (how ?)
 193       }
 194       else //live game
 195       {
 196         this.opponents.forEach(o => {
 197           if (!!o.online)
 198           {
 199             try {
 200               this.st.conn.send(JSON.stringify({code: "draw", oppid: o.id}));
 201             } catch (INVALID_STATE_ERR) {
 202               return;
 203             }
 204           }
 205         });
 206       }
 207     },
 208     // + conn handling: "draw" message ==> agree for draw (if we have "drawOffered" at true)
 209     receiveDrawOffer: function() {
 210       //if (...)
 211       // TODO: ignore if preventDrawOffer is set; otherwise show modal box with option "prevent future offers"
 212       // if accept: send message "draw"
 213     },
 214     abortGame: function() {
 215       if (!confirm("Abort the game?"))
 216         return;
 217       //+ bouton "abort" avec score == "?" + demander confirmation pour toutes ces actions,
 218       //send message: "gameOver" avec score "?"
 219       // ==> BaseGame must listen to game.score change, and call "endgame(score)" in this case
 220     },
 221     resign: function(e) {
 222       if (!confirm("Resign the game?"))
 223         return;
 224       if (this.mode == "human" && this.oppConnected(this.oppid))
 225       {
 226         try {
 227           this.st.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
 228         } catch (INVALID_STATE_ERR) {
 229           return;
 230         }
 231       }
 232       this.endGame(this.mycolor=="w"?"0-1":"1-0");
 233     },
 234     // 4 cases for loading a game:
 235     //  - from localStorage (one running game I play)
 236     //  - from indexedDB (one completed live game)
 237     //  - from server (one correspondance game I play[ed] or not)
 238     //  - from remote peer (one live game I don't play, finished or not)
 239     loadGame: function() {
 240       GameStorage.get(this.gameRef, async (game) => {
 241         this.game = Object.assign({},
 242           game,
 243           // NOTE: assign mycolor here, since BaseGame could also bs VS computer
 244           {mycolor: [undefined,"w","b"][1 + game.players.findIndex(
 245             p => p.sid == this.st.user.sid)]},
 246         );
 247         const vModule = await import("@/variants/" + game.vname + ".js");
 248         window.V = vModule.VariantRules;
 249         this.vr = new V(game.fen);
 250         // Post-processing: decorate each move with current FEN:
 251         // (to be able to jump to any position quickly)
 252         game.moves.forEach(move => {
 253           // NOTE: this is doing manually what BaseGame.play() achieve...
 254           // but in a lighter "fast-forward" way
 255           move.color = this.vr.turn;
 256           this.vr.play(move);
 257           move.fen = this.vr.getFen();
 258         });
 259         this.vr.re_init(game.fen);
 260       });
 261 //    // Poll all players except me (if I'm playing) to know online status.
 262 //    // --> Send ping to server (answer pong if players[s] are connected)
 263 //    if (this.gameInfo.players.some(p => p.sid == this.st.user.sid))
 264 //    {
 265 //      this.game.players.forEach(p => {
 266 //        if (p.sid != this.st.user.sid)
 267 //          this.st.conn.send(JSON.stringify({code:"ping", oppid:p.sid}));
 268 //      });
 269 //    }
 270     },
 271     // TODO: refactor this old "oppConnected" logic
 272 //    oppConnected: function(uid) {
 273 //      return this.opponents.some(o => o.id == uid && o.online);
 274 //    },
 275     // Post-process a move (which was just played)
 276     processMove: function(move) {
 277       if (!this.game.mycolor)
 278         return; //I'm just an observer
 279       // Update storage (corr or live)
 280       const colorIdx = ["w","b","g","r"].indexOf(move.color);
 281       // https://stackoverflow.com/a/38750895
 282       const allowed_fields = ["appear", "vanish", "start", "end"];
 283       const filtered_move = Object.keys(move)
 284         .filter(key => allowed_fields.includes(key))
 285         .reduce((obj, key) => {
 286           obj[key] = move[key];
 287           return obj;
 288         }, {});
 289       // Send move ("newmove" event) to opponent(s) (if ours)
 290       // (otherwise move.elapsed is supposed to be already transmitted)
 291       let addTime = undefined;
 292       if (move.color == this.game.mycolor)
 293       {
 294         const elapsed = Date.now() - GameStorage.getInitime();
 295         this.game.players.forEach(p => {
 296           if (p.sid != this.st.user.sid)
 297             this.st.conn.send(JSON.stringify({
 298               code: "newmove",
 299               target: p.sid,
 300               move: Object.assign({}, filtered_move, {elapsed: elapsed}),
 301             }));
 302         });
 303         move.elapsed = elapsed;
 304         // elapsed time is measured in milliseconds
 305         addTime = this.game.increment - elapsed/1000;
 306       }
 307       GameStorage.update({
 308         colorIdx: colorIdx,
 309         move: filtered_move,
 310         fen: move.fen,
 311         addTime: addTime,
 312         initime: (this.vr.turn == this.game.mycolor), //my turn now?
 313       });
 314     },
 315     // NOTE: this update function should also work for corr games
 316     gameOver: function(score) {
 317       GameStorage.update({
 318         score: score,
 319       });
 320     },
 321   },
 322 };
 323 </script>
 324
 325 <!-- TODO:
 326 // Abort possible à tout moment avec message
 327 // Sorry I have to go / Game seems over / Game is not interesting
 328 // code "T" pour score "perte au temps" ?
 329 -->