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