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="variant.name" @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   props: ["variant","analyze","players"],
  41   data: function() {
  42     return {
  43       st: store.state,
  44       vr: null, //VariantRules object, describing the game state + rules
  45       endgameMessage: "",
  46       orientation: "w",
  47       score: "*", //'*' means 'unfinished'
  48       // userColor: given by gameId, or fen in problems mode (if no game Id)...
  49       mycolor: "w",
  50       fenStart: "",
  51       moves: [], //all moves played in current game
  52       cursor: -1, //index of the move just played
  53       lastMove: null,
  54     };
  55   },
  56   computed: {
  57     showMoves: function() {
  58       return true;
  59       //return window.innerWidth >= 768;
  60     },
  61     showFen: function() {
  62       return this.variant.name != "Dark" || this.score != "*";
  63     },
  64   },
  65   methods: {
  66     setEndgameMessage: function(score) {
  67       let eogMessage = "Undefined";
  68       switch (score)
  69       {
  70         case "1-0":
  71           eogMessage = translations["White win"];
  72           break;
  73         case "0-1":
  74           eogMessage = translations["Black win"];
  75           break;
  76         case "1/2":
  77           eogMessage = translations["Draw"];
  78           break;
  79         case "?":
  80           eogMessage = "Unfinished";
  81           break;
  82       }
  83       this.endgameMessage = eogMessage;
  84     },
  85     download: function() {
  86       const content = this.getPgn();
  87       // Prepare and trigger download link
  88       let downloadAnchor = document.getElementById("download");
  89       downloadAnchor.setAttribute("download", "game.pgn");
  90       downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
  91       downloadAnchor.click();
  92     },
  93     getPgn: function() {
  94       let pgn = "";
  95       pgn += '[Site "vchess.club"]\n';
  96       pgn += '[Variant "' + this.variant.name + '"]\n';
  97       pgn += '[Date "' + getDate(new Date()) + '"]\n';
  98       pgn += '[White "' + this.players[0] + '"]\n';
  99       pgn += '[Black "' + this.players[1] + '"]\n';
 100       pgn += '[Fen "' + this.fenStart + '"]\n';
 101       pgn += '[Result "' + this.score + '"]\n\n';
 102       let counter = 1;
 103       let i = 0;
 104       while (i < this.moves.length)
 105       {
 106         pgn += (counter++) + ".";
 107         for (let color of ["w","b"])
 108         {
 109           let move = "";
 110           while (i < this.moves.length && this.moves[i].color == color)
 111             move += this.moves[i++].notation[0] + ",";
 112           move = move.slice(0,-1); //remove last comma
 113           pgn += move + (i < this.moves.length-1 ? " " : "");
 114         }
 115       }
 116       return pgn + "\n";
 117     },
 118     showScoreMsg: function(score) {
 119       this.setEndgameMessage(score);
 120       let modalBox = document.getElementById("modal-eog");
 121       modalBox.checked = true;
 122       setTimeout(() => { modalBox.checked = false; }, 2000);
 123     },
 124     endGame: function(score) {
 125       this.score = score;
 126       this.showScoreMsg(score);
 127       this.$emit("game-over");
 128     },
 129     animateMove: function(move) {
 130       let startSquare = document.getElementById(getSquareId(move.start));
 131       let endSquare = document.getElementById(getSquareId(move.end));
 132       let rectStart = startSquare.getBoundingClientRect();
 133       let rectEnd = endSquare.getBoundingClientRect();
 134       let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
 135       let movingPiece =
 136         document.querySelector("#" + getSquareId(move.start) + " > img.piece");
 137       // HACK for animation (with positive translate, image slides "under background")
 138       // Possible improvement: just alter squares on the piece's way...
 139       const squares = document.getElementsByClassName("board");
 140       for (let i=0; i<squares.length; i++)
 141       {
 142         let square = squares.item(i);
 143         if (square.id != getSquareId(move.start))
 144           square.style.zIndex = "-1";
 145       }
 146       movingPiece.style.transform = "translate(" + translation.x + "px," +
 147         translation.y + "px)";
 148       movingPiece.style.transitionDuration = "0.2s";
 149       movingPiece.style.zIndex = "3000";
 150       setTimeout( () => {
 151         for (let i=0; i<squares.length; i++)
 152           squares.item(i).style.zIndex = "auto";
 153         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 154         this.play(move);
 155       }, 250);
 156     },
 157     play: function(move, programmatic) {
 158       let navigate = !move;
 159       // Forbid playing outside analyze mode when cursor isn't at moves.length-1
 160       // (except if we receive opponent's move, human or computer)
 161       if (!navigate && !this.analyze && !programmatic
 162         && this.cursor < this.moves.length-1)
 163       {
 164         return;
 165       }
 166       if (navigate)
 167       {
 168         if (this.cursor == this.moves.length-1)
 169           return; //no more moves
 170         move = this.moves[this.cursor+1];
 171       }
 172       if (!!programmatic) //computer or (remote) human opponent
 173       {
 174         if (this.cursor < this.moves.length-1)
 175           this.gotoEnd(); //required to play the move
 176         return this.animateMove(move);
 177       }
 178       // Not programmatic, or animation is over
 179       if (!move.notation)
 180         move.notation = this.vr.getNotation(move);
 181       if (!move.color)
 182         move.color = this.vr.turn;
 183       this.vr.play(move);
 184       this.cursor++;
 185       this.lastMove = move;
 186       if (!move.fen)
 187         move.fen = this.vr.getFen();
 188       if (this.st.settings.sound == 2)
 189         new Audio("/sounds/move.mp3").play().catch(err => {});
 190       // Send the move to web worker (including his own moves)
 191       this.compWorker.postMessage(["newmove",move]);
 192       if (!navigate && (this.score == "*" || this.analyze))
 193       {
 194         // Stack move on movesList at current cursor
 195         if (this.cursor == this.moves.length)
 196           this.moves.push(move);
 197         else
 198           this.moves = this.moves.slice(0,this.cursor).concat([move]);
 199       }
 200       // Is opponent in check?
 201       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 202       const score = this.vr.getCurrentScore();
 203       if (score != "*")
 204       {
 205         if (!this.analyze)
 206           this.endGame(score);
 207         else //just show score on screen (allow undo)
 208           this.showScoreMsg(score);
 209       }
 210       // subTurn condition for Marseille (and Avalanche) rules
 211       else if ((this.mode == "computer" && (!this.vr.subTurn || this.vr.subTurn <= 1))
 212         && (this.subMode == "auto" || this.vr.turn != this.mycolor))
 213       {
 214         this.playComputerMove();
 215       }
 216       // https://vuejs.org/v2/guide/list.html#Caveats (also for undo)
 217       //if (navigate)
 218       //  this.$children[0].$forceUpdate(); //TODO!?
 219     },
 220     undo: function(move) {
 221       let navigate = !move;
 222       if (navigate)
 223       {
 224         if (this.cursor < 0)
 225           return; //no more moves
 226         move = this.moves[this.cursor];
 227       }
 228       this.vr.undo(move);
 229       this.cursor--;
 230       this.lastMove = (this.cursor >= 0 ? this.moves[this.cursor] : undefined);
 231       if (this.st.settings.sound == 2)
 232         new Audio("/sounds/undo.mp3").play().catch(err => {});
 233       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 234       if (navigate)
 235         this.$children[0].$forceUpdate(); //TODO!?
 236       else if (this.analyze) //TODO: can this happen?
 237         this.moves.pop();
 238     },
 239     gotoMove: function(index) {
 240       this.vr = new V(this.moves[index].fen);
 241       this.cursor = index;
 242       this.lastMove = this.moves[index];
 243     },
 244     gotoBegin: function() {
 245       this.vr = new V(this.fenStart);
 246       this.cursor = -1;
 247       this.lastMove = null;
 248     },
 249     gotoEnd: function() {
 250       this.gotoMove(this.moves.length-1);
 251     },
 252     flip: function() {
 253       this.orientation = V.GetNextCol(this.orientation);
 254     },
 255   },
 256 };
 257 </script>