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="analyze"
  37         :user-color="game.mycolor"
  38         :orientation="orientation"
  39         :vname="game.vname"
  40         :incheck="incheck"
  41         @play-move="play"
  42       )
  43       #turnIndicator(v-if="game.vname=='Dark' && game.score=='*'")
  44         | {{ st.tr[vr.turn + " to move"] }}
  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="game.vname!='Dark' || game.score!='*'")
  53           a#download(href="#")
  54           button(@click="download()") {{ st.tr["Download"] }} PGN
  55         button(onClick="doClick('modalAdjust')") &#10530;
  56         button(
  57           v-if="game.vname!='Dark' && game.mode!='analyze'"
  58           @click="analyzePosition()"
  59         )
  60           | {{ st.tr["Analyse"] }}
  61         // NOTE: rather ugly hack to avoid showing twice "rules" link...
  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.vname != "Dark" || this.game.score != "*";
 127     },
 128     analyze: function() {
 129       return (
 130         this.game.mode == "analyze" ||
 131         // From Board viewpoint, a finished Dark game == analyze (TODO: unclear)
 132         (this.game.vname == "Dark" && this.game.score != "*")
 133       );
 134     }
 135   },
 136   created: function() {
 137     if (this.game.fenStart) this.re_setVariables();
 138   },
 139   mounted: function() {
 140     [
 141       document.getElementById("eogDiv"),
 142       document.getElementById("adjuster")
 143     ].forEach(elt => elt.addEventListener("click", processModalClick));
 144     // Take full width on small screens:
 145     let boardSize = parseInt(localStorage.getItem("boardSize"));
 146     if (!boardSize) {
 147       boardSize =
 148         window.innerWidth >= 768
 149           ? 0.75 * Math.min(window.innerWidth, window.innerHeight)
 150           : window.innerWidth;
 151     }
 152     const movesWidth = window.innerWidth >= 768 ? 280 : 0;
 153     document.getElementById("boardContainer").style.width = boardSize + "px";
 154     let gameContainer = document.getElementById("gameContainer");
 155     gameContainer.style.width = boardSize + movesWidth + "px";
 156     document.getElementById("boardSize").value =
 157       (boardSize * 100) / (window.innerWidth - movesWidth);
 158     // timeout to avoid calling too many time the adjust method
 159     let timeoutLaunched = false;
 160     window.addEventListener("resize", () => {
 161       if (!timeoutLaunched) {
 162         timeoutLaunched = true;
 163         setTimeout(() => {
 164           this.adjustBoard();
 165           timeoutLaunched = false;
 166         }, 500);
 167       }
 168     });
 169   },
 170   methods: {
 171     focusBg: function() {
 172       // NOTE: small blue border appears...
 173       document.getElementById("baseGame").focus();
 174     },
 175     adjustBoard: function() {
 176       const boardContainer = document.getElementById("boardContainer");
 177       if (!boardContainer) return; //no board on page
 178       const k = document.getElementById("boardSize").value;
 179       const movesWidth = window.innerWidth >= 768 ? 280 : 0;
 180       const minBoardWidth = 240; //TODO: these 240 and 280 are arbitrary...
 181       // Value of 0 is board min size; 100 is window.width [- movesWidth]
 182       const boardSize =
 183         minBoardWidth +
 184         (k * (window.innerWidth - (movesWidth + minBoardWidth))) / 100;
 185       localStorage.setItem("boardSize", boardSize);
 186       boardContainer.style.width = boardSize + "px";
 187       document.getElementById("gameContainer").style.width =
 188         boardSize + movesWidth + "px";
 189     },
 190     handleKeys: function(e) {
 191       if ([32, 37, 38, 39, 40].includes(e.keyCode)) e.preventDefault();
 192       switch (e.keyCode) {
 193         case 37:
 194           this.undo();
 195           break;
 196         case 39:
 197           this.play();
 198           break;
 199         case 38:
 200           this.gotoBegin();
 201           break;
 202         case 40:
 203           this.gotoEnd();
 204           break;
 205         case 32:
 206           this.flip();
 207           break;
 208       }
 209     },
 210     handleScroll: function(e) {
 211       // NOTE: since game.mode=="analyze" => no score, next condition is enough
 212       if (this.game.score != "*") {
 213         e.preventDefault();
 214         if (e.deltaY < 0) this.undo();
 215         else if (e.deltaY > 0) this.play();
 216       }
 217     },
 218     showRules: function() {
 219       //this.$router.push("/variants/" + this.game.vname);
 220       window.open("#/variants/" + this.game.vname, "_blank"); //better
 221     },
 222     re_setVariables: function() {
 223       this.endgameMessage = "";
 224       this.orientation = this.game.mycolor || "w"; //default orientation for observed games
 225       this.moves = JSON.parse(JSON.stringify(this.game.moves || []));
 226       // Post-processing: decorate each move with color + current FEN:
 227       // (to be able to jump to any position quickly)
 228       let vr_tmp = new V(this.game.fenStart); //vr is already at end of game
 229       this.firstMoveNumber = Math.floor(
 230         V.ParseFen(this.game.fenStart).movesCount / 2
 231       );
 232       this.moves.forEach(move => {
 233         // NOTE: this is doing manually what play() function below achieve,
 234         // but in a lighter "fast-forward" way
 235         move.color = vr_tmp.turn;
 236         move.notation = vr_tmp.getNotation(move);
 237         vr_tmp.play(move);
 238         move.fen = vr_tmp.getFen();
 239       });
 240       if (
 241         (this.moves.length > 0 && this.moves[0].color == "b") ||
 242         (this.moves.length == 0 && vr_tmp.turn == "b")
 243       ) {
 244         // 'end' is required for Board component to check lastMove for e.p.
 245         this.moves.unshift({
 246           color: "w",
 247           notation: "...",
 248           end: { x: -1, y: -1 }
 249         });
 250       }
 251       const L = this.moves.length;
 252       this.cursor = L - 1;
 253       this.lastMove = L > 0 ? this.moves[L - 1] : null;
 254       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 255     },
 256     analyzePosition: function() {
 257       const newUrl =
 258         "/analyse/" +
 259         this.game.vname +
 260         "/?fen=" +
 261         this.vr.getFen().replace(/ /g, "_");
 262       if (this.game.type == "live") this.$router.push(newUrl);
 263       //open in same tab: against cheating...
 264       else window.open("#" + newUrl); //open in a new tab: more comfortable
 265     },
 266     download: function() {
 267       const content = this.getPgn();
 268       // Prepare and trigger download link
 269       let downloadAnchor = document.getElementById("download");
 270       downloadAnchor.setAttribute("download", "game.pgn");
 271       downloadAnchor.href =
 272         "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 273       downloadAnchor.click();
 274     },
 275     getPgn: function() {
 276       let pgn = "";
 277       pgn += '[Site "vchess.club"]\n';
 278       pgn += '[Variant "' + this.game.vname + '"]\n';
 279       pgn += '[Date "' + getDate(new Date()) + '"]\n';
 280       pgn += '[White "' + this.game.players[0].name + '"]\n';
 281       pgn += '[Black "' + this.game.players[1].name + '"]\n';
 282       pgn += '[Fen "' + this.game.fenStart + '"]\n';
 283       pgn += '[Result "' + this.game.score + '"]\n\n';
 284       let counter = 1;
 285       let i = 0;
 286       while (i < this.moves.length) {
 287         pgn += counter++ + ".";
 288         for (let color of ["w", "b"]) {
 289           let move = "";
 290           while (i < this.moves.length && this.moves[i].color == color)
 291             move += this.moves[i++].notation + ",";
 292           move = move.slice(0, -1); //remove last comma
 293           pgn += move + (i < this.moves.length ? " " : "");
 294         }
 295       }
 296       return pgn + "\n";
 297     },
 298     showEndgameMsg: function(message) {
 299       this.endgameMessage = message;
 300       let modalBox = document.getElementById("modalEog");
 301       modalBox.checked = true;
 302       setTimeout(() => {
 303         modalBox.checked = false;
 304       }, 2000);
 305     },
 306     animateMove: function(move, callback) {
 307       let startSquare = document.getElementById(getSquareId(move.start));
 308       // TODO: error "flush nextTick callbacks" when observer reloads page:
 309       // this late check is not a fix!
 310       if (!startSquare) return;
 311       let endSquare = document.getElementById(getSquareId(move.end));
 312       let rectStart = startSquare.getBoundingClientRect();
 313       let rectEnd = endSquare.getBoundingClientRect();
 314       let translation = {
 315         x: rectEnd.x - rectStart.x,
 316         y: rectEnd.y - rectStart.y
 317       };
 318       let movingPiece = document.querySelector(
 319         "#" + getSquareId(move.start) + " > img.piece"
 320       );
 321       if (!movingPiece)
 322         //TODO: shouldn't happen
 323         return;
 324       // HACK for animation (with positive translate, image slides "under background")
 325       // Possible improvement: just alter squares on the piece's way...
 326       const squares = document.getElementsByClassName("board");
 327       for (let i = 0; i < squares.length; i++) {
 328         let square = squares.item(i);
 329         if (square.id != getSquareId(move.start)) square.style.zIndex = "-1";
 330       }
 331       movingPiece.style.transform =
 332         "translate(" + translation.x + "px," + translation.y + "px)";
 333       movingPiece.style.transitionDuration = "0.2s";
 334       movingPiece.style.zIndex = "3000";
 335       setTimeout(() => {
 336         for (let i = 0; i < squares.length; i++)
 337           squares.item(i).style.zIndex = "auto";
 338         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 339         callback();
 340       }, 250);
 341     },
 342     play: function(move, receive) {
 343       // NOTE: navigate and receive are mutually exclusive
 344       const navigate = !move;
 345       // Forbid playing outside analyze mode, except if move is received.
 346       // Sufficient condition because Board already knows which turn it is.
 347       if (
 348         !navigate &&
 349         this.game.mode != "analyze" &&
 350         !receive &&
 351         (this.game.score != "*" || this.cursor < this.moves.length - 1)
 352       ) {
 353         return;
 354       }
 355       const doPlayMove = () => {
 356         if (!!receive && this.cursor < this.moves.length - 1) this.gotoEnd(); //required to play the move
 357         if (navigate) {
 358           if (this.cursor == this.moves.length - 1) return; //no more moves
 359           move = this.moves[this.cursor + 1];
 360         } else {
 361           move.color = this.vr.turn;
 362           move.notation = this.vr.getNotation(move);
 363         }
 364         this.vr.play(move);
 365         this.cursor++;
 366         this.lastMove = move;
 367         if (this.st.settings.sound == 2)
 368           new Audio("/sounds/move.mp3").play().catch(() => {});
 369         if (!navigate) {
 370           move.fen = this.vr.getFen();
 371           // Stack move on movesList at current cursor
 372           if (this.cursor == this.moves.length) this.moves.push(move);
 373           else this.moves = this.moves.slice(0, this.cursor).concat([move]);
 374         }
 375         // Is opponent in check?
 376         this.incheck = this.vr.getCheckSquares(this.vr.turn);
 377         const score = this.vr.getCurrentScore();
 378         if (score != "*") {
 379           const message = getScoreMessage(score);
 380           if (this.game.mode != "analyze")
 381             this.$emit("gameover", score, message);
 382           //just show score on screen (allow undo)
 383           else this.showEndgameMsg(score + " . " + message);
 384         }
 385         if (!navigate && this.game.mode != "analyze")
 386           this.$emit("newmove", move); //post-processing (e.g. computer play)
 387       };
 388       if (!!receive && this.game.vname != "Dark")
 389         this.animateMove(move, doPlayMove);
 390       else doPlayMove();
 391     },
 392     undo: function(move) {
 393       const navigate = !move;
 394       if (navigate) {
 395         if (this.cursor < 0) return; //no more moves
 396         move = this.moves[this.cursor];
 397       }
 398       this.vr.undo(move);
 399       this.cursor--;
 400       this.lastMove = this.cursor >= 0 ? this.moves[this.cursor] : undefined;
 401       if (this.st.settings.sound == 2)
 402         new Audio("/sounds/undo.mp3").play().catch(() => {});
 403       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 404       if (!navigate) this.moves.pop();
 405     },
 406     gotoMove: function(index) {
 407       this.vr.re_init(this.moves[index].fen);
 408       this.cursor = index;
 409       this.lastMove = this.moves[index];
 410     },
 411     gotoBegin: function() {
 412       if (this.cursor == -1) return;
 413       this.vr.re_init(this.game.fenStart);
 414       if (this.moves.length > 0 && this.moves[0].notation == "...") {
 415         this.cursor = 0;
 416         this.lastMove = this.moves[0];
 417       } else {
 418         this.cursor = -1;
 419         this.lastMove = null;
 420       }
 421     },
 422     gotoEnd: function() {
 423       if (this.cursor == this.moves.length - 1) return;
 424       this.gotoMove(this.moves.length - 1);
 425     },
 426     flip: function() {
 427       this.orientation = V.GetOppCol(this.orientation);
 428     }
 429   }
 430 };
 431 </script>
 432
 433 <style lang="sass" scoped>
 434 [type="checkbox"]#modalEog+div .card
 435   min-height: 45px
 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 #turnIndicator
 458   text-align: center
 459 #belowControls
 460   border-top: 1px solid #2f4f4f
 461   text-align: center
 462   margin: 0 auto
 463   & > #downloadDiv
 464     margin: 0
 465     & > button
 466       margin: 0
 467   & > button
 468     border-left: 1px solid #2f4f4f
 469     margin: 0
 470 #boardContainer
 471   float: left
 472 // TODO: later, maybe, allow movesList of variable width
 473 // or e.g. between 250 and 350px (but more complicated)
 474 #movesList
 475   width: 280px
 476   float: left
 477 @media screen and (max-width: 767px)
 478   #movesList
 479     width: 100%
 480     float: none
 481     clear: both
 482 </style>