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