client/src/components/BaseGame.vue

   1 <template lang="pug">
   2 div#baseGame(
   3   tabindex=-1
   4   @click="focusBg()"
   5   @keydown="handleKeys($event)"
   6   @wheel="handleScroll($event)"
   7 )
   8   input#modalEog.modal(type="checkbox")
   9   div#eogDiv(
  10     role="dialog"
  11     data-checkbox="modalEog"
  12   )
  13     .card.text-center
  14       label.modal-close(for="modalEog")
  15       h3.section {{ endgameMessage }}
  16   input#modalAdjust.modal(type="checkbox")
  17   div#adjuster(
  18     role="dialog"
  19     data-checkbox="modalAdjust"
  20   )
  21     .card.text-center
  22       label.modal-close(for="modalAdjust")
  23       label(for="boardSize") {{ st.tr["Board size"] }}
  24       input#boardSize.slider(
  25         type="range"
  26         min="0"
  27         max="100"
  28         value="50"
  29         @input="adjustBoard()"
  30       )
  31   #gameContainer
  32     #boardContainer
  33       Board(
  34         :vr="vr"
  35         :last-move="lastMove"
  36         :analyze="game.mode=='analyze'"
  37         :score="game.score"
  38         :user-color="game.mycolor"
  39         :orientation="orientation"
  40         :vname="game.vname"
  41         :incheck="incheck"
  42         @play-move="play"
  43       )
  44       #turnIndicator(v-if="showTurn") {{ turn }}
  45       #controls
  46         button(@click="gotoBegin()") <<
  47         button(@click="undo()") <
  48         button(@click="flip()") &#8645;
  49         button(@click="play()") >
  50         button(@click="gotoEnd()") >>
  51       #belowControls
  52         #downloadDiv(v-if="allowDownloadPGN")
  53           a#download(href="#")
  54           button(@click="download()") {{ st.tr["Download"] }} PGN
  55         button(onClick="window.doClick('modalAdjust')") &#10530;
  56         button(
  57           v-if="canAnalyze"
  58           @click="analyzePosition()"
  59         )
  60           | {{ st.tr["Analyse"] }}
  61         // NOTE: variants pages already have a "Rules" link on top
  62         button(
  63           v-if="!$route.path.match('/variants/')"
  64           @click="showRules()"
  65         )
  66           | {{ st.tr["Rules"] }}
  67     #movesList
  68       MoveList(
  69         v-if="showMoves != 'none'"
  70         :show="showMoves"
  71         :score="game.score"
  72         :message="game.scoreMsg"
  73         :firstNum="firstMoveNumber"
  74         :moves="moves"
  75         :cursor="cursor"
  76         @goto-move="gotoMove"
  77       )
  78     .clearer
  79 </template>
  80
  81 <script>
  82 import Board from "@/components/Board.vue";
  83 import MoveList from "@/components/MoveList.vue";
  84 import { store } from "@/store";
  85 import { getSquareId } from "@/utils/squareId";
  86 import { getDate } from "@/utils/datetime";
  87 import { processModalClick } from "@/utils/modalClick";
  88 import { getScoreMessage } from "@/utils/scoring";
  89 export default {
  90   name: "my-base-game",
  91   components: {
  92     Board,
  93     MoveList
  94   },
  95   // "vr": VariantRules object, describing the game state + rules
  96   props: ["vr", "game"],
  97   data: function() {
  98     return {
  99       st: store.state,
 100       // NOTE: all following variables must be reset at the beginning of a game
 101       endgameMessage: "",
 102       orientation: "w",
 103       score: "*", //'*' means 'unfinished'
 104       moves: [],
 105       cursor: -1, //index of the move just played
 106       lastMove: null,
 107       firstMoveNumber: 0, //for printing
 108       incheck: [] //for Board
 109     };
 110   },
 111   watch: {
 112     // game initial FEN changes when a new game starts
 113     "game.fenStart": function() {
 114       this.re_setVariables();
 115     },
 116   },
 117   computed: {
 118     showMoves: function() {
 119       return this.game.score != "*"
 120         ? "all"
 121         : (this.vr ? this.vr.showMoves : "none");
 122     },
 123     showTurn: function() {
 124       return this.game.score == '*' && this.vr && this.vr.showMoves != "all";
 125     },
 126     turn: function() {
 127       return this.vr
 128         ? this.st.tr[(this.vr.turn == 'w' ? "White" : "Black") + " to move"]
 129         : "";
 130     },
 131     canAnalyze: function() {
 132       return this.game.mode != "analyze" && this.vr && this.vr.canAnalyze;
 133     },
 134     allowDownloadPGN: function() {
 135       return this.game.score != "*" || (this.vr && this.vr.showMoves == "all");
 136     }
 137   },
 138   created: function() {
 139     if (this.game.fenStart) this.re_setVariables();
 140   },
 141   mounted: function() {
 142     [
 143       document.getElementById("eogDiv"),
 144       document.getElementById("adjuster")
 145     ].forEach(elt => elt.addEventListener("click", processModalClick));
 146     // Take full width on small screens:
 147     let boardSize = parseInt(localStorage.getItem("boardSize"));
 148     if (!boardSize) {
 149       boardSize =
 150         window.innerWidth >= 768
 151           ? 0.75 * Math.min(window.innerWidth, window.innerHeight)
 152           : window.innerWidth;
 153     }
 154     const movesWidth = window.innerWidth >= 768 ? 280 : 0;
 155     document.getElementById("boardContainer").style.width = boardSize + "px";
 156     let gameContainer = document.getElementById("gameContainer");
 157     gameContainer.style.width = boardSize + movesWidth + "px";
 158     document.getElementById("boardSize").value =
 159       (boardSize * 100) / (window.innerWidth - movesWidth);
 160     // timeout to avoid calling too many time the adjust method
 161     let timeoutLaunched = false;
 162     window.addEventListener("resize", () => {
 163       if (!timeoutLaunched) {
 164         timeoutLaunched = true;
 165         setTimeout(() => {
 166           this.adjustBoard();
 167           timeoutLaunched = false;
 168         }, 500);
 169       }
 170     });
 171   },
 172   methods: {
 173     focusBg: function() {
 174       document.getElementById("baseGame").focus();
 175     },
 176     adjustBoard: function() {
 177       const boardContainer = document.getElementById("boardContainer");
 178       if (!boardContainer) return; //no board on page
 179       const k = document.getElementById("boardSize").value;
 180       const movesWidth = window.innerWidth >= 768 ? 280 : 0;
 181       const minBoardWidth = 240; //TODO: these 240 and 280 are arbitrary...
 182       // Value of 0 is board min size; 100 is window.width [- movesWidth]
 183       const boardSize =
 184         minBoardWidth +
 185         (k * (window.innerWidth - (movesWidth + minBoardWidth))) / 100;
 186       localStorage.setItem("boardSize", boardSize);
 187       boardContainer.style.width = boardSize + "px";
 188       document.getElementById("gameContainer").style.width =
 189         boardSize + movesWidth + "px";
 190     },
 191     handleKeys: function(e) {
 192       if ([32, 37, 38, 39, 40].includes(e.keyCode)) e.preventDefault();
 193       switch (e.keyCode) {
 194         case 37:
 195           this.undo();
 196           break;
 197         case 39:
 198           this.play();
 199           break;
 200         case 38:
 201           this.gotoBegin();
 202           break;
 203         case 40:
 204           this.gotoEnd();
 205           break;
 206         case 32:
 207           this.flip();
 208           break;
 209       }
 210     },
 211     handleScroll: function(e) {
 212       // NOTE: since game.mode=="analyze" => no score, next condition is enough
 213       if (this.game.score != "*") {
 214         e.preventDefault();
 215         if (e.deltaY < 0) this.undo();
 216         else if (e.deltaY > 0) this.play();
 217       }
 218     },
 219     showRules: function() {
 220       //this.$router.push("/variants/" + this.game.vname);
 221       window.open("#/variants/" + this.game.vname, "_blank"); //better
 222     },
 223     re_setVariables: function() {
 224       this.endgameMessage = "";
 225       // "w": default orientation for observed games
 226       this.orientation = this.game.mycolor || "w";
 227       this.moves = JSON.parse(JSON.stringify(this.game.moves || []));
 228       // Post-processing: decorate each move with color, notation and FEN
 229       let vr_tmp = new V(this.game.fenStart);
 230       const parsedFen = V.ParseFen(this.game.fenStart);
 231       const firstMoveColor = parsedFen.turn;
 232       this.firstMoveNumber = Math.floor(parsedFen.movesCount / 2);
 233       this.moves.forEach(move => {
 234         move.color = vr_tmp.turn;
 235         move.notation = vr_tmp.getNotation(move);
 236         vr_tmp.play(move);
 237         move.fen = vr_tmp.getFen();
 238       });
 239       if (firstMoveColor == "b") {
 240         // 'end' is required for Board component to check lastMove for e.p.
 241         this.moves.unshift({
 242           color: "w",
 243           notation: "...",
 244           end: { x: -1, y: -1 }
 245         });
 246       }
 247       const L = this.moves.length;
 248       this.cursor = L - 1;
 249       this.lastMove = L > 0 ? this.moves[L - 1] : null;
 250       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 251     },
 252     analyzePosition: function() {
 253       const newUrl =
 254         "/analyse/" +
 255         this.game.vname +
 256         "/?fen=" +
 257         this.vr.getFen().replace(/ /g, "_");
 258       // Open in same tab in live games (against cheating)
 259       if (this.game.type == "live") this.$router.push(newUrl);
 260       else window.open("#" + newUrl);
 261     },
 262     download: function() {
 263       const content = this.getPgn();
 264       // Prepare and trigger download link
 265       let downloadAnchor = document.getElementById("download");
 266       downloadAnchor.setAttribute("download", "game.pgn");
 267       downloadAnchor.href =
 268         "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 269       downloadAnchor.click();
 270     },
 271     getPgn: function() {
 272       let pgn = "";
 273       pgn += '[Site "vchess.club"]\n';
 274       pgn += '[Variant "' + this.game.vname + '"]\n';
 275       pgn += '[Date "' + getDate(new Date()) + '"]\n';
 276       pgn += '[White "' + this.game.players[0].name + '"]\n';
 277       pgn += '[Black "' + this.game.players[1].name + '"]\n';
 278       pgn += '[Fen "' + this.game.fenStart + '"]\n';
 279       pgn += '[Result "' + this.game.score + '"]\n\n';
 280       let counter = 1;
 281       let i = 0;
 282       while (i < this.moves.length) {
 283         pgn += counter++ + ".";
 284         for (let color of ["w", "b"]) {
 285           let move = "";
 286           while (i < this.moves.length && this.moves[i].color == color)
 287             move += this.moves[i++].notation + ",";
 288           move = move.slice(0, -1); //remove last comma
 289           pgn += move + (i < this.moves.length ? " " : "");
 290         }
 291       }
 292       return pgn + "\n";
 293     },
 294     showEndgameMsg: function(message) {
 295       this.endgameMessage = message;
 296       let modalBox = document.getElementById("modalEog");
 297       modalBox.checked = true;
 298       setTimeout(() => {
 299         modalBox.checked = false;
 300       }, 2000);
 301     },
 302     animateMove: function(move, callback) {
 303       let startSquare = document.getElementById(getSquareId(move.start));
 304       let endSquare = document.getElementById(getSquareId(move.end));
 305       let rectStart = startSquare.getBoundingClientRect();
 306       let rectEnd = endSquare.getBoundingClientRect();
 307       let translation = {
 308         x: rectEnd.x - rectStart.x,
 309         y: rectEnd.y - rectStart.y
 310       };
 311       let movingPiece = document.querySelector(
 312         "#" + getSquareId(move.start) + " > img.piece"
 313       );
 314       // HACK for animation (with positive translate, image slides "under background")
 315       // Possible improvement: just alter squares on the piece's way...
 316       const squares = document.getElementsByClassName("board");
 317       for (let i = 0; i < squares.length; i++) {
 318         let square = squares.item(i);
 319         if (square.id != getSquareId(move.start)) square.style.zIndex = "-1";
 320       }
 321       movingPiece.style.transform =
 322         "translate(" + translation.x + "px," + translation.y + "px)";
 323       movingPiece.style.transitionDuration = "0.25s";
 324       movingPiece.style.zIndex = "3000";
 325       setTimeout(() => {
 326         for (let i = 0; i < squares.length; i++)
 327           squares.item(i).style.zIndex = "auto";
 328         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 329         callback();
 330       }, 250);
 331     },
 332     play: function(move, receive) {
 333       // NOTE: navigate and receive are mutually exclusive
 334       const navigate = !move;
 335       // Forbid playing outside analyze mode, except if move is received.
 336       // Sufficient condition because Board already knows which turn it is.
 337       if (
 338         !navigate &&
 339         this.game.mode != "analyze" &&
 340         !receive &&
 341         (this.game.score != "*" || this.cursor < this.moves.length - 1)
 342       ) {
 343         return;
 344       }
 345       const doPlayMove = () => {
 346         // To play a move, cursor must be at the end of the game:
 347         if (!!receive && this.cursor < this.moves.length - 1) this.gotoEnd();
 348         if (navigate) {
 349           if (this.cursor == this.moves.length - 1) return; //no more moves
 350           move = this.moves[this.cursor + 1];
 351         } else {
 352           move.color = this.vr.turn;
 353           move.notation = this.vr.getNotation(move);
 354         }
 355         this.vr.play(move);
 356         this.cursor++;
 357         this.lastMove = move;
 358         if (this.st.settings.sound == 2)
 359           new Audio("/sounds/move.mp3").play().catch(() => {});
 360         if (!navigate) {
 361           move.fen = this.vr.getFen();
 362           // Stack move on movesList at current cursor
 363           if (this.cursor == this.moves.length) this.moves.push(move);
 364           else this.moves = this.moves.slice(0, this.cursor).concat([move]);
 365         }
 366         // Is opponent in check?
 367         this.incheck = this.vr.getCheckSquares(this.vr.turn);
 368         const score = this.vr.getCurrentScore();
 369         if (score != "*") {
 370           const message = getScoreMessage(score);
 371           if (this.game.mode != "analyze")
 372             this.$emit("gameover", score, message);
 373           //just show score on screen (allow undo)
 374           else this.showEndgameMsg(score + " . " + message);
 375         }
 376         if (!navigate && this.game.mode != "analyze")
 377           this.$emit("newmove", move); //post-processing (e.g. computer play)
 378       };
 379       if (!!receive && V.ShowMoves == "all")
 380         this.animateMove(move, doPlayMove);
 381       else doPlayMove();
 382     },
 383     undo: function(move) {
 384       const navigate = !move;
 385       if (navigate) {
 386         if (this.cursor < 0) return; //no more moves
 387         move = this.moves[this.cursor];
 388       }
 389       this.vr.undo(move);
 390       this.cursor--;
 391       this.lastMove = this.cursor >= 0 ? this.moves[this.cursor] : undefined;
 392       if (this.st.settings.sound == 2)
 393         new Audio("/sounds/undo.mp3").play().catch(() => {});
 394       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 395       if (!navigate) this.moves.pop();
 396     },
 397     gotoMove: function(index) {
 398       this.vr.re_init(this.moves[index].fen);
 399       this.cursor = index;
 400       this.lastMove = this.moves[index];
 401       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 402     },
 403     gotoBegin: function() {
 404       if (this.cursor == -1) return;
 405       this.vr.re_init(this.game.fenStart);
 406       if (this.moves.length > 0 && this.moves[0].notation == "...") {
 407         this.cursor = 0;
 408         this.lastMove = this.moves[0];
 409       } else {
 410         this.cursor = -1;
 411         this.lastMove = null;
 412       }
 413       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 414     },
 415     gotoEnd: function() {
 416       if (this.cursor == this.moves.length - 1) return;
 417       this.gotoMove(this.moves.length - 1);
 418     },
 419     flip: function() {
 420       this.orientation = V.GetOppCol(this.orientation);
 421     }
 422   }
 423 };
 424 </script>
 425
 426 <style lang="sass" scoped>
 427 [type="checkbox"]#modalEog+div .card
 428   min-height: 45px
 429
 430 [type="checkbox"]#modalAdjust+div .card
 431   padding: 5px
 432
 433 #baseGame
 434   width: 100%
 435   &:focus
 436     outline: none
 437
 438 #gameContainer
 439   margin-left: auto
 440   margin-right: auto
 441
 442 #downloadDiv
 443   display: inline-block
 444
 445 #controls
 446   margin: 0 auto
 447   button
 448     display: inline-block
 449     width: 20%
 450     margin: 0
 451
 452 #turnIndicator
 453   text-align: center
 454   font-weight: bold
 455
 456 #belowControls
 457   border-top: 1px solid #2f4f4f
 458   text-align: center
 459   margin: 0 auto
 460   & > #downloadDiv
 461     margin: 0
 462     & > button
 463       margin: 0
 464   & > button
 465     border-left: 1px solid #2f4f4f
 466     margin: 0
 467
 468 #boardContainer
 469   float: left
 470 // TODO: later, maybe, allow movesList of variable width
 471 // or e.g. between 250 and 350px (but more complicated)
 472
 473 #movesList
 474   width: 280px
 475   float: left
 476
 477 @media screen and (max-width: 767px)
 478   #movesList
 479     width: 100%
 480     float: none
 481     clear: both
 482 </style>