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