client/src/components/BaseGame.vue

   1 <template lang="pug">
   2 div#baseGame
   3   input#modalEog.modal(type="checkbox")
   4   div#eogDiv(
   5     role="dialog"
   6     data-checkbox="modalEog"
   7   )
   8     .card.text-center
   9       label.modal-close(for="modalEog")
  10       h3.section {{ endgameMessage }}
  11   #gameContainer
  12     #boardContainer
  13       Board(
  14         ref="board"
  15         :vr="vr"
  16         :last-move="lastMove"
  17         :analyze="mode=='analyze'"
  18         :score="game.score"
  19         :user-color="game.mycolor"
  20         :orientation="orientation"
  21         :vname="game.vname"
  22         :incheck="incheck"
  23         @play-move="play"
  24         @click-square="clickSquare"
  25       )
  26       #turnIndicator(v-if="showTurn") {{ turn }}
  27       #controls.button-group
  28         button(@click="gotoBegin()")
  29           img.inline(src="/images/icons/fast-forward_rev.svg")
  30         button(@click="undo()")
  31           img.inline(src="/images/icons/play_rev.svg")
  32         button(v-if="canFlip" @click="flip()")
  33           img.inline(src="/images/icons/flip.svg")
  34         button(
  35           @click="runAutoplay()"
  36           :class="{'in-autoplay': autoplay}"
  37         )
  38           img.inline(src="/images/icons/autoplay.svg")
  39         button(@click="play()")
  40           img.inline(src="/images/icons/play.svg")
  41         button(@click="gotoEnd()")
  42           img.inline(src="/images/icons/fast-forward.svg")
  43       p#fenAnalyze(v-show="showFen") {{ (!!vr ? vr.getFen() : "") }}
  44     #movesList
  45       MoveList(
  46         :show="showMoves"
  47         :canAnalyze="canAnalyze"
  48         :canDownload="allowDownloadPGN"
  49         :score="game.score"
  50         :message="game.scoreMsg"
  51         :firstNum="firstMoveNumber"
  52         :moves="moves"
  53         :cursor="cursor"
  54         @download="download"
  55         @showrules="showRules"
  56         @analyze="toggleAnalyze"
  57         @goto-move="gotoMove"
  58         @reset-arrows="resetArrows"
  59       )
  60     .clearer
  61 </template>
  62
  63 <script>
  64 import Board from "@/components/Board.vue";
  65 import MoveList from "@/components/MoveList.vue";
  66 import params from "@/parameters";
  67 import { store } from "@/store";
  68 import { getSquareId } from "@/utils/squareId";
  69 import { getDate } from "@/utils/datetime";
  70 import { processModalClick } from "@/utils/modalClick";
  71 import { getScoreMessage } from "@/utils/scoring";
  72 import { getFullNotation } from "@/utils/notation";
  73 import { undoMove } from "@/utils/playUndo";
  74 export default {
  75   name: "my-base-game",
  76   components: {
  77     Board,
  78     MoveList
  79   },
  80   props: ["game"],
  81   data: function() {
  82     return {
  83       st: store.state,
  84       // NOTE: all following variables must be reset at the beginning of a game
  85       vr: null, //VariantRules object, game state
  86       endgameMessage: "",
  87       orientation: "w",
  88       mode: "",
  89       score: "*", //'*' means 'unfinished'
  90       moves: [],
  91       cursor: -1, //index of the move just played
  92       lastMove: null,
  93       firstMoveNumber: 0, //for printing
  94       incheck: [], //for Board
  95       inMultimove: false,
  96       autoplay: false,
  97       inPlay: false,
  98       stackToPlay: []
  99     };
 100   },
 101   computed: {
 102     turn: function() {
 103       if (!this.vr) return "";
 104       if (this.vr.showMoves != "all") {
 105         return this.st.tr[
 106           (this.vr.turn == 'w' ? "White" : "Black") + " to move"];
 107       }
 108       // Cannot flip: racing king or circular chess
 109       return (
 110         this.vr.movesCount == 0 && this.game.mycolor == "w"
 111           ? this.st.tr["It's your turn!"]
 112           : ""
 113       );
 114     },
 115     showFen: function() {
 116       return (
 117         this.mode == "analyze" &&
 118         this.$router.currentRoute.path.indexOf("/analyse") === -1
 119       );
 120     },
 121     // TODO: is it OK to pass "computed" as properties?
 122     // Also, some are seemingly not recomputed when vr is initialized.
 123     showMoves: function() {
 124       return this.game.score != "*"
 125         ? "all"
 126         : (!!this.vr ? this.vr.showMoves : "none");
 127     },
 128     showTurn: function() {
 129       return (
 130         this.game.score == '*' &&
 131         !!this.vr && (this.vr.showMoves != "all" || !this.vr.canFlip)
 132       );
 133     },
 134     canAnalyze: function() {
 135       return (
 136         this.game.mode != "analyze" &&
 137         !!this.vr && this.vr.canAnalyze
 138       );
 139     },
 140     canFlip: function() {
 141       return !!this.vr && this.vr.canFlip;
 142     },
 143     allowDownloadPGN: function() {
 144       return (
 145         this.game.score != "*" ||
 146         (!!this.vr && this.vr.showMoves == "all")
 147       );
 148     }
 149   },
 150   created: function() {
 151     if (!!this.game.fenStart) this.re_setVariables();
 152   },
 153   mounted: function() {
 154     if (!("ontouchstart" in window)) {
 155       // Desktop browser:
 156       const baseGameDiv = document.getElementById("baseGame");
 157       baseGameDiv.tabIndex = 0;
 158       baseGameDiv.addEventListener("click", this.focusBg);
 159       baseGameDiv.addEventListener("keydown", this.handleKeys);
 160       baseGameDiv.addEventListener("wheel", this.handleScroll);
 161     }
 162     document.getElementById("eogDiv")
 163       .addEventListener("click", processModalClick);
 164   },
 165   beforeDestroy: function() {
 166     // TODO: probably not required
 167     this.autoplay = false;
 168   },
 169   methods: {
 170     focusBg: function() {
 171       document.getElementById("baseGame").focus();
 172     },
 173     handleKeys: function(e) {
 174       if ([32, 37, 38, 39, 40].includes(e.keyCode)) e.preventDefault();
 175       switch (e.keyCode) {
 176         case 37:
 177           this.undo();
 178           break;
 179         case 39:
 180           this.play();
 181           break;
 182         case 38:
 183           this.gotoBegin();
 184           break;
 185         case 40:
 186           this.gotoEnd();
 187           break;
 188         case 32:
 189           this.flip();
 190           break;
 191       }
 192     },
 193     handleScroll: function(e) {
 194       e.preventDefault();
 195       if (e.deltaY < 0) this.undo();
 196       else if (e.deltaY > 0) this.play();
 197     },
 198     resetArrows: function() {
 199       // TODO: make arrows scale with board, and remove this
 200       this.$refs["board"].cancelResetArrows();
 201     },
 202     showRules: function() {
 203       // The button is here only on Game page:
 204       document.getElementById("modalRules").checked = true;
 205     },
 206     re_setVariables: function(game) {
 207       if (!game) game = this.game; //in case of...
 208       this.endgameMessage = "";
 209       // "w": default orientation for observed games
 210       this.orientation = game.mycolor || "w";
 211       this.mode = game.mode || game.type; //TODO: merge...
 212       this.moves = JSON.parse(JSON.stringify(game.moves || []));
 213       // Post-processing: decorate each move with notation and FEN
 214       this.vr = new V(game.fenStart);
 215       this.inMultimove = false; //in case of
 216       this.$refs["board"].resetCurrentAttempt(); //also in case of
 217       let analyseBtn = document.getElementById("analyzeBtn");
 218       if (!!analyseBtn) analyseBtn.classList.remove("active");
 219       const parsedFen = V.ParseFen(game.fenStart);
 220       const firstMoveColor = parsedFen.turn;
 221       this.firstMoveNumber = Math.floor(parsedFen.movesCount / 2) + 1;
 222       let L = this.moves.length;
 223       if (L == 0) {
 224         this.incheck = [];
 225         this.score = "*";
 226       }
 227       this.moves.forEach((move,idx) => {
 228         // Strategy working also for multi-moves:
 229         if (!Array.isArray(move)) move = [move];
 230         const Lm = move.length;
 231         move.forEach((m,idxM) => {
 232           m.notation = this.vr.getNotation(m);
 233           m.unambiguous = V.GetUnambiguousNotation(m);
 234           this.vr.play(m);
 235           const checkSquares = this.vr.getCheckSquares();
 236           if (checkSquares.length > 0) m.notation += "+";
 237           if (idxM == Lm - 1) m.fen = this.vr.getFen();
 238           if (idx == L - 1 && idxM == Lm - 1) {
 239             this.incheck = checkSquares;
 240             this.score = this.vr.getCurrentScore();
 241             if (["1-0", "0-1"].includes(this.score)) m.notation += "#";
 242           }
 243         });
 244       });
 245       if (firstMoveColor == "b") {
 246         // 'start' & 'end' is required for Board component
 247         this.moves.unshift({
 248           notation: "...",
 249           unambiguous: "...",
 250           start: { x: -1, y: -1 },
 251           end: { x: -1, y: -1 },
 252           fen: game.fenStart
 253         });
 254         L++;
 255       }
 256       this.positionCursorTo(L - 1);
 257     },
 258     positionCursorTo: function(index) {
 259       this.cursor = index;
 260       // Note: last move in moves array might be a multi-move
 261       if (index >= 0) this.lastMove = this.moves[index];
 262       else this.lastMove = null;
 263     },
 264     toggleAnalyze: function() {
 265       // Freeze while choices are shown (and autoplay has priority)
 266       if (this.$refs["board"].choices.length > 0 || this.autoplay) return;
 267       if (this.mode != "analyze") {
 268         // Enter analyze mode:
 269         if (this.inMultimove) this.cancelCurrentMultimove();
 270         this.gameMode = this.mode; //was not 'analyze'
 271         this.mode = "analyze";
 272         this.gameCursor = this.cursor;
 273         this.gameMoves = JSON.parse(JSON.stringify(this.moves));
 274         document.getElementById("analyzeBtn").classList.add("active");
 275       }
 276       else {
 277         // Exit analyze mode:
 278         this.mode = this.gameMode ;
 279         this.cursor = this.gameCursor;
 280         this.moves = this.gameMoves;
 281         let fen = this.game.fenStart;
 282         if (this.cursor >= 0) {
 283           let mv = this.moves[this.cursor];
 284           if (!Array.isArray(mv)) mv = [mv];
 285           fen = mv[mv.length-1].fen;
 286         }
 287         this.vr = new V(fen);
 288         this.inMultimove = false; //in case of
 289         this.$refs["board"].resetCurrentAttempt(); //also in case of
 290         this.incheck = this.vr.getCheckSquares();
 291         if (this.cursor >= 0) this.lastMove = this.moves[this.cursor];
 292         else this.lastMove = null;
 293         document.getElementById("analyzeBtn").classList.remove("active");
 294       }
 295     },
 296     download: function() {
 297       const content = this.getPgn();
 298       // Prepare and trigger download link
 299       let downloadAnchor = document.getElementById("download");
 300       downloadAnchor.setAttribute("download", "game.pgn");
 301       downloadAnchor.href =
 302         "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 303       downloadAnchor.click();
 304     },
 305     getPgn: function() {
 306       let pgn = "";
 307       pgn += '[Site "vchess.club"]\n';
 308       pgn += '[Variant "' + this.game.vname + '"]\n';
 309       const gdt = getDate(new Date(this.game.created || Date.now()));
 310       pgn += '[Date "' + gdt + '"]\n';
 311       pgn += '[White "' + this.game.players[0].name + '"]\n';
 312       pgn += '[Black "' + this.game.players[1].name + '"]\n';
 313       pgn += '[Fen "' + this.game.fenStart + '"]\n';
 314       pgn += '[Result "' + this.game.score + '"]\n';
 315       if (!!this.game.id)
 316         pgn += '[Url "' + params.serverUrl + '/game/' + this.game.id + '"]\n';
 317       if (!!this.game.cadence)
 318         pgn += '[Cadence "' + this.game.cadence + '"]\n';
 319       pgn += '\n';
 320       for (let i = 0; i < this.moves.length; i += 2) {
 321         if (i > 0) pgn += " ";
 322         // Adjust dots notation for a better display:
 323         let fullNotation = getFullNotation(this.moves[i]);
 324         if (fullNotation == "...") fullNotation = "..";
 325         pgn += (i / 2 + this.firstMoveNumber) + "." + fullNotation;
 326         if (i+1 < this.moves.length)
 327           pgn += " " + getFullNotation(this.moves[i+1]);
 328       }
 329       pgn += "\n\n";
 330       for (let i = 0; i < this.moves.length; i += 2) {
 331         const moveNumber = i / 2 + this.firstMoveNumber;
 332         // Skip "dots move", useless for machine reading:
 333         if (this.moves[i].notation != "...") {
 334           pgn += moveNumber + ".w " +
 335             getFullNotation(this.moves[i], "unambiguous") + "\n";
 336         }
 337         if (i+1 < this.moves.length) {
 338           pgn += moveNumber + ".b " +
 339             getFullNotation(this.moves[i+1], "unambiguous") + "\n";
 340         }
 341       }
 342       return pgn;
 343     },
 344     showEndgameMsg: function(message) {
 345       this.endgameMessage = message;
 346       document.getElementById("modalEog").checked = true;
 347     },
 348     runAutoplay: function() {
 349       if (this.autoplay) {
 350         this.autoplay = false;
 351         if (this.stackToPlay.length > 0)
 352           // Move(s) arrived in-between
 353           this.play(this.stackToPlay.pop(), "received");
 354       }
 355       else if (this.cursor < this.moves.length - 1) {
 356         this.autoplay = true;
 357         this.play(null, null, null, "autoplay");
 358       }
 359     },
 360     // Animate an elementary move
 361     animateMove: function(move, callback) {
 362       let startSquare = document.getElementById(getSquareId(move.start));
 363       if (!startSquare) return; //shouldn't happen but...
 364       let endSquare = document.getElementById(getSquareId(move.end));
 365       let rectStart = startSquare.getBoundingClientRect();
 366       let rectEnd = endSquare.getBoundingClientRect();
 367       let translation = {
 368         x: rectEnd.x - rectStart.x,
 369         y: rectEnd.y - rectStart.y
 370       };
 371       let movingPiece = document.querySelector(
 372         "#" + getSquareId(move.start) + " > img.piece"
 373       );
 374       // For some unknown reasons Opera get "movingPiece == null" error
 375       // TODO: is it calling 'animate()' twice ? One extra time ?
 376       if (!movingPiece) return;
 377       const squares = document.getElementsByClassName("board");
 378       for (let i = 0; i < squares.length; i++) {
 379         let square = squares.item(i);
 380         if (square.id != getSquareId(move.start))
 381           // HACK for animation:
 382           // (with positive translate, image slides "under background")
 383           square.style.zIndex = "-1";
 384       }
 385       movingPiece.style.transform =
 386         "translate(" + translation.x + "px," + translation.y + "px)";
 387       movingPiece.style.transitionDuration = "0.25s";
 388       movingPiece.style.zIndex = "3000";
 389       setTimeout(() => {
 390         for (let i = 0; i < squares.length; i++)
 391           squares.item(i).style.zIndex = "auto";
 392         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 393         callback();
 394       }, 250);
 395     },
 396     // For Analyse mode:
 397     emitFenIfAnalyze: function() {
 398       if (this.game.mode == "analyze") {
 399         let fen = this.game.fenStart;
 400         if (!!this.lastMove) {
 401           if (Array.isArray(this.lastMove)) {
 402             const L = this.lastMove.length;
 403             fen = this.lastMove[L-1].fen;
 404           }
 405           else fen = this.lastMove.fen;
 406         }
 407         this.$emit("fenchange", fen);
 408       }
 409     },
 410     clickSquare: function(square) {
 411       // Some variants make use of a single click at specific times:
 412       const move = this.vr.doClick(square);
 413       if (!!move) this.play(move);
 414     },
 415     // "light": if gotoMove() or gotoEnd()
 416     play: function(move, received, light, autoplay) {
 417       // Freeze while choices are shown:
 418       if (this.$refs["board"].choices.length > 0) return;
 419       const navigate = !move;
 420       // Forbid navigation during autoplay:
 421       if (navigate && this.autoplay && !autoplay) return;
 422       // Forbid playing outside analyze mode, except if move is received.
 423       // Sufficient condition because Board already knows which turn it is.
 424       if (
 425         this.mode != "analyze" &&
 426         !navigate &&
 427         !received &&
 428         (this.game.score != "*" || this.cursor < this.moves.length - 1)
 429       ) {
 430         return;
 431       }
 432       if (!!received) {
 433         if (this.autoplay || this.inPlay) {
 434           // Received moves while autoplaying are stacked,
 435           // and in observed games they could arrive too fast:
 436           this.stackToPlay.unshift(move);
 437           return;
 438         }
 439         this.inPlay = true;
 440         if (this.mode == "analyze") this.toggleAnalyze();
 441         if (this.cursor < this.moves.length - 1)
 442           // To play a received move, cursor must be at the end of the game:
 443           this.gotoEnd();
 444       }
 445       // The board may show some the possible moves: (TODO: bad solution)
 446       this.$refs["board"].resetCurrentAttempt();
 447       const playSubmove = (smove) => {
 448         smove.notation = this.vr.getNotation(smove);
 449         smove.unambiguous = V.GetUnambiguousNotation(smove);
 450         this.vr.play(smove);
 451         if (this.inMultimove && !!this.lastMove) {
 452           if (!Array.isArray(this.lastMove))
 453             this.lastMove = [this.lastMove, smove];
 454           else this.lastMove.push(smove);
 455         }
 456         // Is opponent (or me) in check?
 457         this.incheck = this.vr.getCheckSquares();
 458         if (this.incheck.length > 0) smove.notation += "+";
 459         if (!this.inMultimove) {
 460           // First sub-move:
 461           this.lastMove = smove;
 462           // Condition is "!navigate" but we mean "!this.autoplay"
 463           if (!navigate) {
 464             if (this.cursor < this.moves.length - 1)
 465               this.moves = this.moves.slice(0, this.cursor + 1);
 466             this.moves.push(smove);
 467           }
 468           this.inMultimove = true; //potentially
 469           this.cursor++;
 470         } else if (!navigate) {
 471           // Already in the middle of a multi-move
 472           const L = this.moves.length;
 473           if (!Array.isArray(this.moves[L-1]))
 474             this.$set(this.moves, L-1, [this.moves[L-1], smove]);
 475           else this.moves[L-1].push(smove);
 476         }
 477       };
 478       const playMove = () => {
 479         const animate = (
 480           ["all", "highlight"].includes(V.ShowMoves) &&
 481           (this.autoplay || !!received)
 482         );
 483         if (!Array.isArray(move)) move = [move];
 484         let moveIdx = 0;
 485         let self = this;
 486         const initurn = this.vr.turn;
 487         (function executeMove() {
 488           const smove = move[moveIdx++];
 489           // NOTE: condition "smove.start.x >= 0" required for Dynamo,
 490           // because second move may be empty.
 491           if (animate && smove.start.x >= 0) {
 492             self.animateMove(smove, () => {
 493               playSubmove(smove);
 494               if (moveIdx < move.length) setTimeout(executeMove, 500);
 495               else afterMove(smove, initurn);
 496             });
 497           } else {
 498             playSubmove(smove);
 499             if (moveIdx < move.length) executeMove();
 500             else afterMove(smove, initurn);
 501           }
 502         })();
 503       };
 504       const computeScore = () => {
 505         const score = this.vr.getCurrentScore();
 506         if (!navigate) {
 507           if (["1-0", "0-1"].includes(score)) {
 508             if (Array.isArray(this.lastMove)) {
 509               const L = this.lastMove.length;
 510               this.lastMove[L - 1].notation += "#";
 511             }
 512             else this.lastMove.notation += "#";
 513           }
 514         }
 515         if (score != "*" && ["analyze", "versus"].includes(this.mode)) {
 516           const message = getScoreMessage(score);
 517           // Show score on screen
 518           this.showEndgameMsg(score + " . " + this.st.tr[message]);
 519         }
 520         return score;
 521       };
 522       const afterMove = (smove, initurn) => {
 523         if (this.vr.turn != initurn) {
 524           // Turn has changed: move is complete
 525           if (!smove.fen)
 526             // NOTE: only FEN of last sub-move is required (=> setting it here)
 527             smove.fen = this.vr.getFen();
 528           this.emitFenIfAnalyze();
 529           this.inMultimove = false;
 530           this.score = computeScore();
 531           if (this.autoplay) {
 532             if (this.cursor < this.moves.length - 1)
 533               setTimeout(() => this.play(null, null, null, "autoplay"), 1000);
 534             else {
 535               this.autoplay = false;
 536               if (this.stackToPlay.length > 0)
 537                 // Move(s) arrived in-between
 538                 this.play(this.stackToPlay.pop(), "received");
 539             }
 540           }
 541           if (this.mode != "analyze" && !navigate) {
 542             if (!received) {
 543               // Post-processing (e.g. computer play).
 544               const L = this.moves.length;
 545               // NOTE: always emit the score, even in unfinished
 546               this.$emit("newmove", this.moves[L-1], { score: this.score });
 547             } else {
 548               this.inPlay = false;
 549               if (this.stackToPlay.length > 0)
 550                 // Move(s) arrived in-between
 551                 this.play(this.stackToPlay.pop(), "received");
 552             }
 553           }
 554         }
 555       };
 556       // NOTE: navigate and received are mutually exclusive
 557       if (navigate) {
 558         // The move to navigate to is necessarily full:
 559         if (this.cursor == this.moves.length - 1) return; //no more moves
 560         move = this.moves[this.cursor + 1];
 561         if (!this.autoplay) {
 562           // Just play the move:
 563           if (!Array.isArray(move)) move = [move];
 564           for (let i=0; i < move.length; i++) this.vr.play(move[i]);
 565           if (!light) {
 566             this.lastMove = move;
 567             this.incheck = this.vr.getCheckSquares();
 568             this.score = computeScore();
 569             this.emitFenIfAnalyze();
 570           }
 571           this.cursor++;
 572           return;
 573         }
 574       }
 575       playMove();
 576     },
 577     cancelCurrentMultimove: function() {
 578       const L = this.moves.length;
 579       let move = this.moves[L-1];
 580       if (!Array.isArray(move)) move = [move];
 581       for (let i = move.length - 1; i >= 0; i--) this.vr.undo(move[i]);
 582       this.moves.pop();
 583       this.cursor--;
 584       this.inMultimove = false;
 585     },
 586     cancelLastMove: function() {
 587       // The last played move was canceled (corr game)
 588       this.undo();
 589       this.moves.pop();
 590     },
 591     // "light": if gotoMove() or gotoBegin()
 592     undo: function(move, light) {
 593       // Freeze while choices are shown:
 594       if (this.$refs["board"].choices.length > 0 || this.autoplay) return;
 595       this.$refs["board"].resetCurrentAttempt();
 596       if (this.inMultimove) {
 597         this.cancelCurrentMultimove();
 598         this.incheck = this.vr.getCheckSquares();
 599         if (this.cursor >= 0) this.lastMove = this.moves[this.cursor];
 600         else this.lastMove = null;
 601       } else {
 602         if (!move) {
 603           const minCursor =
 604             this.moves.length > 0 && this.moves[0].notation == "..."
 605               ? 1
 606               : 0;
 607           if (this.cursor < minCursor) return; //no more moves
 608           move = this.moves[this.cursor];
 609         }
 610         this.$refs["board"].resetCurrentAttempt();
 611         undoMove(move, this.vr);
 612         if (light) this.cursor--;
 613         else {
 614           this.positionCursorTo(this.cursor - 1);
 615           this.incheck = this.vr.getCheckSquares();
 616           this.emitFenIfAnalyze();
 617         }
 618       }
 619     },
 620     gotoMove: function(index) {
 621       if (this.$refs["board"].choices.length > 0 || this.autoplay) return;
 622       this.$refs["board"].resetCurrentAttempt();
 623       if (this.inMultimove) this.cancelCurrentMultimove();
 624       if (index == this.cursor) return;
 625       if (index < this.cursor) {
 626         while (this.cursor > index)
 627           this.undo(null, null, "light");
 628       }
 629       else {
 630         // index > this.cursor)
 631         while (this.cursor < index)
 632           this.play(null, null, "light");
 633       }
 634       // NOTE: next line also re-assign cursor, but it's very light
 635       this.positionCursorTo(index);
 636       this.incheck = this.vr.getCheckSquares();
 637       this.emitFenIfAnalyze();
 638     },
 639     gotoBegin: function() {
 640       if (this.$refs["board"].choices.length > 0 || this.autoplay) return;
 641       this.$refs["board"].resetCurrentAttempt();
 642       if (this.inMultimove) this.cancelCurrentMultimove();
 643       const minCursor =
 644         this.moves.length > 0 && this.moves[0].notation == "..."
 645           ? 1
 646           : 0;
 647       while (this.cursor >= minCursor) this.undo(null, null, "light");
 648       this.lastMove = (minCursor == 1 ? this.moves[0] : null);
 649       this.incheck = this.vr.getCheckSquares();
 650       this.emitFenIfAnalyze();
 651     },
 652     gotoEnd: function() {
 653       if (this.$refs["board"].choices.length > 0 || this.autoplay) return;
 654       this.$refs["board"].resetCurrentAttempt();
 655       if (this.cursor == this.moves.length - 1) return;
 656       this.gotoMove(this.moves.length - 1);
 657       this.emitFenIfAnalyze();
 658     },
 659     flip: function() {
 660       if (this.$refs["board"].choices.length > 0) return;
 661       this.orientation = V.GetOppCol(this.orientation);
 662     }
 663   }
 664 };
 665 </script>
 666
 667 <style lang="sass" scoped>
 668 [type="checkbox"]#modalEog+div .card
 669   min-height: 45px
 670   max-width: 350px
 671
 672 #baseGame
 673   width: 100%
 674   &:focus
 675     outline: none
 676
 677 #gameContainer
 678   margin-left: auto
 679   margin-right: auto
 680
 681 #downloadDiv
 682   display: inline-block
 683
 684 #controls
 685   user-select: none
 686   button
 687     border: none
 688     margin: 0
 689     padding-top: 5px
 690     padding-bottom: 5px
 691
 692 p#fenAnalyze
 693   margin: 5px
 694
 695 .in-autoplay
 696   background-color: #FACF8C
 697
 698 img.inline
 699   height: 22px
 700   padding-top: 5px
 701   @media screen and (max-width: 767px)
 702     height: 18px
 703
 704 #turnIndicator
 705   text-align: center
 706   font-weight: bold
 707
 708 #boardContainer
 709   float: left
 710 // TODO: later, maybe, allow movesList of variable width
 711 // or e.g. between 250 and 350px (but more complicated)
 712
 713 #movesList
 714   width: 280px
 715   float: left
 716
 717 @media screen and (max-width: 767px)
 718   #movesList
 719     width: 100%
 720     float: none
 721     clear: both
 722 </style>