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