client/src/components/ComputerGame.vue

   1 <template lang="pug">
   2 .row
   3   .col-sm-12.col-md-10.col-md-offset-1.col-lg-8.col-lg-offset-2
   4     BaseGame(:game="game" :vr="vr" ref="basegame"
   5       @newmove="processMove" @gameover="gameOver")
   6 </template>
   7
   8 <script>
   9 import BaseGame from "@/components/BaseGame.vue";
  10 import { store } from "@/store";
  11 import Worker from "worker-loader!@/playCompMove";
  12
  13 export default {
  14   name: "my-computer-game",
  15   components: {
  16     BaseGame,
  17   },
  18   // gameInfo: fen + mode + vname
  19   // mode: "auto" (game comp vs comp), "versus" (normal) or "analyze"
  20   props: ["gameInfo"],
  21   data: function() {
  22     return {
  23       st: store.state,
  24       game: {},
  25       vr: null,
  26       // Web worker to play computer moves without freezing interface:
  27       timeStart: undefined, //time when computer starts thinking
  28       compThink: false, //avoid asking a new move while one is being searched
  29       compWorker: null,
  30     };
  31   },
  32   watch: {
  33     "gameInfo.fen": function() {
  34       this.launchGame();
  35     },
  36     "gameInfo.score": function(newScore) {
  37       if (newScore != "*")
  38       {
  39         this.game.score = newScore; //user action
  40         this.game.mode = "analyze";
  41         if (!this.compThink)
  42           this.$emit("game-stopped"); //otherwise wait for comp
  43       }
  44     },
  45   },
  46   // Modal end of game, and then sub-components
  47   created: function() {
  48     // Computer moves web worker logic:
  49     this.compWorker = new Worker();
  50     this.compWorker.onmessage = e => {
  51       let compMove = e.data;
  52       if (!compMove)
  53         return; //after game ends, no more moves, nothing to do
  54       if (!Array.isArray(compMove))
  55         compMove = [compMove]; //to deal with MarseilleRules
  56       // Small delay for the bot to appear "more human"
  57       const delay = Math.max(500-(Date.now()-this.timeStart), 0);
  58       setTimeout(() => {
  59         // NOTE: Dark and 2-moves are incompatible
  60         const animate = (this.gameInfo.vname != "Dark");
  61         const animDelay = (animate ? 250 : 0);
  62         let moveIdx = 0;
  63         let self = this;
  64         (function executeMove() {
  65           self.$refs.basegame.play(compMove[moveIdx++], animate);
  66           if (moveIdx >= compMove.length)
  67           {
  68             self.compThink = false;
  69             if (self.game.score != "*") //user action
  70               self.$emit("game-stopped");
  71           }
  72           else
  73             setTimeout(executeMove, 500 + animDelay);
  74         })();
  75       }, delay);
  76     }
  77     if (!!this.gameInfo.fen)
  78       this.launchGame();
  79   },
  80   // dans variant.js (plutôt room.js) conn gère aussi les challenges
  81   // et les chats dans chat.js. Puis en webRTC, repenser tout ça.
  82   methods: {
  83     launchGame: async function() {
  84       const vModule = await import("@/variants/" + this.gameInfo.vname + ".js");
  85       window.V = vModule.VariantRules;
  86       this.compWorker.postMessage(["scripts",this.gameInfo.vname]);
  87       this.compWorker.postMessage(["init",this.gameInfo.fen]);
  88       this.vr = new V(this.gameInfo.fen);
  89       const mycolor = (Math.random() < 0.5 ? "w" : "b");
  90       let players = [{name:"Myself"},{name:"Computer"}];
  91       if (mycolor == "b")
  92         players = players.reverse();
  93       // NOTE: fen and fenStart are redundant in game object
  94       this.game = Object.assign({},
  95         this.gameInfo,
  96         {
  97           fenStart: this.gameInfo.fen,
  98           players: players,
  99           mycolor: mycolor,
 100           score: "*",
 101         });
 102       this.compWorker.postMessage(["init",this.gameInfo.fen]);
 103       if (mycolor != "w" || this.gameInfo.mode == "auto")
 104         this.playComputerMove();
 105     },
 106     playComputerMove: function() {
 107       this.timeStart = Date.now();
 108       this.compThink = true;
 109       this.compWorker.postMessage(["askmove"]);
 110     },
 111     processMove: function(move) {
 112       // Send the move to web worker (including his own moves)
 113       this.compWorker.postMessage(["newmove",move]);
 114       // subTurn condition for Marseille (and Avalanche) rules
 115       if ((!this.vr.subTurn || this.vr.subTurn <= 1)
 116         && (this.gameInfo.mode == "auto" || this.vr.turn != this.game.mycolor))
 117       {
 118         this.playComputerMove();
 119       }
 120     },
 121     gameOver: function(score) {
 122       this.game.score = score;
 123       this.game.mode = "analyze";
 124       this.$emit("game-over", score); //bubble up to Rules.vue
 125     },
 126   },
 127 };
 128 </script>