client/src/components/BaseGame.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     input#modalEog.modal(type="checkbox")
   5     div(role="dialog" aria-labelledby="eogMessage")
   6       .card.smallpad.small-modal.text-center
   7         label.modal-close(for="modalEog")
   8         h3#eogMessage.section {{ endgameMessage }}
   9     Board(:vr="vr" :last-move="lastMove" :analyze="analyze" :user-color="mycolor"
  10       :orientation="orientation" :vname="vname" @play-move="play")
  11     .button-group
  12       button(@click="play") Play
  13       button(@click="undo") Undo
  14       button(@click="flip") Flip
  15       button(@click="gotoBegin") GotoBegin
  16       button(@click="gotoEnd") GotoEnd
  17     #fenDiv.section-content(v-if="showFen && !!vr")
  18       p#fenString.text-center {{ vr.getFen() }}
  19     #pgnDiv.section-content
  20       a#download(href="#")
  21       .button-group
  22         button#downloadBtn(@click="download") {{ st.tr["Download PGN"] }}
  23         button Import game
  24     //MoveList(v-if="showMoves"
  25       :moves="moves" :cursor="cursor" @goto-move="gotoMove")
  26 </template>
  27
  28 <script>
  29 import Board from "@/components/Board.vue";
  30 //import MoveList from "@/components/MoveList.vue";
  31 import { store } from "@/store";
  32 import { getSquareId } from "@/utils/squareId";
  33
  34 export default {
  35   name: 'my-base-game',
  36   components: {
  37     Board,
  38     //MoveList,
  39   },
  40   // "vr": VariantRules object, describing the game state + rules
  41   props: ["vname","analyze","vr","fenStart","players","mycolor"],
  42   data: function() {
  43     return {
  44       st: store.state,
  45       // NOTE: all following variables must be reset at the beginning of a game
  46       endgameMessage: "",
  47       orientation: "w",
  48       score: "*", //'*' means 'unfinished'
  49       moves: [],
  50       cursor: -1, //index of the move just played
  51       lastMove: null,
  52     };
  53   },
  54   computed: {
  55     showMoves: function() {
  56       return true;
  57       //return window.innerWidth >= 768;
  58     },
  59     showFen: function() {
  60       return this.vname != "Dark" || this.score != "*";
  61     },
  62   },
  63   methods: {
  64     setEndgameMessage: function(score) {
  65       let eogMessage = "Undefined";
  66       switch (score)
  67       {
  68         case "1-0":
  69           eogMessage = translations["White win"];
  70           break;
  71         case "0-1":
  72           eogMessage = translations["Black win"];
  73           break;
  74         case "1/2":
  75           eogMessage = translations["Draw"];
  76           break;
  77         case "?":
  78           eogMessage = "Unfinished";
  79           break;
  80       }
  81       this.endgameMessage = eogMessage;
  82     },
  83     download: function() {
  84       const content = this.getPgn();
  85       // Prepare and trigger download link
  86       let downloadAnchor = document.getElementById("download");
  87       downloadAnchor.setAttribute("download", "game.pgn");
  88       downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
  89       downloadAnchor.click();
  90     },
  91     getPgn: function() {
  92       let pgn = "";
  93       pgn += '[Site "vchess.club"]\n';
  94       pgn += '[Variant "' + this.vname + '"]\n';
  95       pgn += '[Date "' + getDate(new Date()) + '"]\n';
  96       pgn += '[White "' + this.players[0] + '"]\n';
  97       pgn += '[Black "' + this.players[1] + '"]\n';
  98       pgn += '[Fen "' + this.fenStart + '"]\n';
  99       pgn += '[Result "' + this.score + '"]\n\n';
 100       let counter = 1;
 101       let i = 0;
 102       while (i < this.moves.length)
 103       {
 104         pgn += (counter++) + ".";
 105         for (let color of ["w","b"])
 106         {
 107           let move = "";
 108           while (i < this.moves.length && this.moves[i].color == color)
 109             move += this.moves[i++].notation[0] + ",";
 110           move = move.slice(0,-1); //remove last comma
 111           pgn += move + (i < this.moves.length-1 ? " " : "");
 112         }
 113       }
 114       return pgn + "\n";
 115     },
 116     showScoreMsg: function(score) {
 117       this.setEndgameMessage(score);
 118       let modalBox = document.getElementById("modal-eog");
 119       modalBox.checked = true;
 120       setTimeout(() => { modalBox.checked = false; }, 2000);
 121     },
 122     endGame: function(score) {
 123       this.score = score;
 124       this.showScoreMsg(score);
 125       this.$emit("game-over");
 126     },
 127     animateMove: function(move) {
 128       let startSquare = document.getElementById(getSquareId(move.start));
 129       let endSquare = document.getElementById(getSquareId(move.end));
 130       let rectStart = startSquare.getBoundingClientRect();
 131       let rectEnd = endSquare.getBoundingClientRect();
 132       let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
 133       let movingPiece =
 134         document.querySelector("#" + getSquareId(move.start) + " > img.piece");
 135       // HACK for animation (with positive translate, image slides "under background")
 136       // Possible improvement: just alter squares on the piece's way...
 137       const squares = document.getElementsByClassName("board");
 138       for (let i=0; i<squares.length; i++)
 139       {
 140         let square = squares.item(i);
 141         if (square.id != getSquareId(move.start))
 142           square.style.zIndex = "-1";
 143       }
 144       movingPiece.style.transform = "translate(" + translation.x + "px," +
 145         translation.y + "px)";
 146       movingPiece.style.transitionDuration = "0.2s";
 147       movingPiece.style.zIndex = "3000";
 148       setTimeout( () => {
 149         for (let i=0; i<squares.length; i++)
 150           squares.item(i).style.zIndex = "auto";
 151         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 152         this.play(move);
 153       }, 250);
 154     },
 155     play: function(move, programmatic) {
 156       let navigate = !move;
 157       // Forbid playing outside analyze mode when cursor isn't at moves.length-1
 158       // (except if we receive opponent's move, human or computer)
 159       if (!navigate && !this.analyze && !programmatic
 160         && this.cursor < this.moves.length-1)
 161       {
 162         return;
 163       }
 164       if (navigate)
 165       {
 166         if (this.cursor == this.moves.length-1)
 167           return; //no more moves
 168         move = this.moves[this.cursor+1];
 169       }
 170       if (!!programmatic) //computer or (remote) human opponent
 171       {
 172         if (this.cursor < this.moves.length-1)
 173           this.gotoEnd(); //required to play the move
 174         return this.animateMove(move);
 175       }
 176       // Not programmatic, or animation is over
 177       if (!move.notation)
 178         move.notation = this.vr.getNotation(move);
 179       if (!move.color)
 180         move.color = this.vr.turn;
 181       this.vr.play(move);
 182       this.cursor++;
 183       this.lastMove = move;
 184       if (!move.fen)
 185         move.fen = this.vr.getFen();
 186       if (this.st.settings.sound == 2)
 187         new Audio("/sounds/move.mp3").play().catch(err => {});
 188       // Send the move to web worker (including his own moves) //TODO: doesn't work here --> need to send an event instead
 189       this.compWorker.postMessage(["newmove",move]);
 190       if (!navigate && (this.score == "*" || this.analyze))
 191       {
 192         // Stack move on movesList at current cursor
 193         if (this.cursor == this.moves.length)
 194           this.moves.push(move);
 195         else
 196           this.moves = this.moves.slice(0,this.cursor).concat([move]);
 197       }
 198       // Is opponent in check?
 199       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 200       const score = this.vr.getCurrentScore();
 201       if (score != "*")
 202       {
 203         if (!this.analyze)
 204           this.endGame(score);
 205         else //just show score on screen (allow undo)
 206           this.showScoreMsg(score);
 207       }
 208       // subTurn condition for Marseille (and Avalanche) rules
 209       else if ((this.mode == "computer" && (!this.vr.subTurn || this.vr.subTurn <= 1))
 210         && (this.subMode == "auto" || this.vr.turn != this.mycolor))
 211       {
 212         this.playComputerMove();
 213       }
 214       // https://vuejs.org/v2/guide/list.html#Caveats (also for undo)
 215       //if (navigate)
 216       //  this.$children[0].$forceUpdate(); //TODO!?
 217     },
 218     undo: function(move) {
 219       let navigate = !move;
 220       if (navigate)
 221       {
 222         if (this.cursor < 0)
 223           return; //no more moves
 224         move = this.moves[this.cursor];
 225       }
 226       this.vr.undo(move);
 227       this.cursor--;
 228       this.lastMove = (this.cursor >= 0 ? this.moves[this.cursor] : undefined);
 229       if (this.st.settings.sound == 2)
 230         new Audio("/sounds/undo.mp3").play().catch(err => {});
 231       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 232       if (navigate)
 233         this.$children[0].$forceUpdate(); //TODO!?
 234       else if (this.analyze) //TODO: can this happen?
 235         this.moves.pop();
 236     },
 237     gotoMove: function(index) {
 238       this.vr = new V(this.moves[index].fen);
 239       this.cursor = index;
 240       this.lastMove = this.moves[index];
 241     },
 242     gotoBegin: function() {
 243       this.vr = new V(this.fenStart);
 244       this.cursor = -1;
 245       this.lastMove = null;
 246     },
 247     gotoEnd: function() {
 248       this.gotoMove(this.moves.length-1);
 249     },
 250     flip: function() {
 251       this.orientation = V.GetNextCol(this.orientation);
 252     },
 253   },
 254 };
 255 </script>