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=='*'") {{ turn }}
  44       #controls
  45         button(@click="gotoBegin()") <<
  46         button(@click="undo()") <
  47         button(@click="flip()") &#8645;
  48         button(@click="play()") >
  49         button(@click="gotoEnd()") >>
  50       #belowControls
  51         #downloadDiv(v-if="game.vname!='Dark' || game.score!='*'")
  52           a#download(href="#")
  53           button(@click="download()") {{ st.tr["Download"] }} PGN
  54         button(onClick="window.doClick('modalAdjust')") &#10530;
  55         button(
  56           v-if="game.vname!='Dark' && game.mode!='analyze'"
  57           @click="analyzePosition()"
  58         )
  59           | {{ st.tr["Analyse"] }}
  60         // NOTE: rather ugly hack to avoid showing twice "rules" link...
  61         button(
  62           v-if="!$route.path.match('/variants/')"
  63           @click="showRules()"
  64         )
  65           | {{ st.tr["Rules"] }}
  66     #movesList
  67       MoveList(
  68         v-if="showMoves"
  69         :score="game.score"
  70         :message="game.scoreMsg"
  71         :firstNum="firstMoveNumber"
  72         :moves="moves"
  73         :cursor="cursor"
  74         @goto-move="gotoMove"
  75       )
  76     .clearer
  77 </template>
  78
  79 <script>
  80 import Board from "@/components/Board.vue";
  81 import MoveList from "@/components/MoveList.vue";
  82 import { store } from "@/store";
  83 import { getSquareId } from "@/utils/squareId";
  84 import { getDate } from "@/utils/datetime";
  85 import { processModalClick } from "@/utils/modalClick";
  86 import { getScoreMessage } from "@/utils/scoring";
  87 export default {
  88   name: "my-base-game",
  89   components: {
  90     Board,
  91     MoveList
  92   },
  93   // "vr": VariantRules object, describing the game state + rules
  94   props: ["vr", "game"],
  95   data: function() {
  96     return {
  97       st: store.state,
  98       // NOTE: all following variables must be reset at the beginning of a game
  99       endgameMessage: "",
 100       orientation: "w",
 101       score: "*", //'*' means 'unfinished'
 102       moves: [],
 103       cursor: -1, //index of the move just played
 104       lastMove: null,
 105       firstMoveNumber: 0, //for printing
 106       incheck: [] //for Board
 107     };
 108   },
 109   watch: {
 110     // game initial FEN changes when a new game starts
 111     "game.fenStart": function() {
 112       this.re_setVariables();
 113     },
 114     // Received a new move to play:
 115     "game.moveToPlay": function(move) {
 116       if (move) this.play(move, "receive");
 117     },
 118     // ...Or to undo (corr game, move not validated)
 119     "game.moveToUndo": function(move) {
 120       if (move) this.undo(move);
 121     }
 122   },
 123   computed: {
 124     showMoves: function() {
 125       return this.game.vname != "Dark" || this.game.score != "*";
 126     },
 127     turn: function() {
 128       return this.st.tr[(this.vr.turn == 'w' ? "White" : "Black") + " to move"];
 129     },
 130     analyze: function() {
 131       return (
 132         this.game.mode == "analyze" ||
 133         // From Board viewpoint, a finished Dark game == analyze (TODO: unclear)
 134         (this.game.vname == "Dark" && this.game.score != "*")
 135       );
 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       this.orientation = this.game.mycolor || "w"; //default orientation for observed games
 226       this.moves = JSON.parse(JSON.stringify(this.game.moves || []));
 227       // Post-processing: decorate each move with color + current FEN:
 228       // (to be able to jump to any position quickly)
 229       let vr_tmp = new V(this.game.fenStart); //vr is already at end of game
 230       this.firstMoveNumber = Math.floor(
 231         V.ParseFen(this.game.fenStart).movesCount / 2
 232       );
 233       this.moves.forEach(move => {
 234         // NOTE: this is doing manually what play() function below achieve,
 235         // but in a lighter "fast-forward" way
 236         move.color = vr_tmp.turn;
 237         move.notation = vr_tmp.getNotation(move);
 238         vr_tmp.play(move);
 239         move.fen = vr_tmp.getFen();
 240       });
 241       if (
 242         (this.moves.length > 0 && this.moves[0].color == "b") ||
 243         (this.moves.length == 0 && vr_tmp.turn == "b")
 244       ) {
 245         // 'end' is required for Board component to check lastMove for e.p.
 246         this.moves.unshift({
 247           color: "w",
 248           notation: "...",
 249           end: { x: -1, y: -1 }
 250         });
 251       }
 252       const L = this.moves.length;
 253       this.cursor = L - 1;
 254       this.lastMove = L > 0 ? this.moves[L - 1] : null;
 255       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 256     },
 257     analyzePosition: function() {
 258       const newUrl =
 259         "/analyse/" +
 260         this.game.vname +
 261         "/?fen=" +
 262         this.vr.getFen().replace(/ /g, "_");
 263       // Open in same tab in live games (against cheating)
 264       if (this.game.type == "live") this.$router.push(newUrl);
 265       else window.open("#" + newUrl);
 266     },
 267     download: function() {
 268       const content = this.getPgn();
 269       // Prepare and trigger download link
 270       let downloadAnchor = document.getElementById("download");
 271       downloadAnchor.setAttribute("download", "game.pgn");
 272       downloadAnchor.href =
 273         "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 274       downloadAnchor.click();
 275     },
 276     getPgn: function() {
 277       let pgn = "";
 278       pgn += '[Site "vchess.club"]\n';
 279       pgn += '[Variant "' + this.game.vname + '"]\n';
 280       pgn += '[Date "' + getDate(new Date()) + '"]\n';
 281       pgn += '[White "' + this.game.players[0].name + '"]\n';
 282       pgn += '[Black "' + this.game.players[1].name + '"]\n';
 283       pgn += '[Fen "' + this.game.fenStart + '"]\n';
 284       pgn += '[Result "' + this.game.score + '"]\n\n';
 285       let counter = 1;
 286       let i = 0;
 287       while (i < this.moves.length) {
 288         pgn += counter++ + ".";
 289         for (let color of ["w", "b"]) {
 290           let move = "";
 291           while (i < this.moves.length && this.moves[i].color == color)
 292             move += this.moves[i++].notation + ",";
 293           move = move.slice(0, -1); //remove last comma
 294           pgn += move + (i < this.moves.length ? " " : "");
 295         }
 296       }
 297       return pgn + "\n";
 298     },
 299     showEndgameMsg: function(message) {
 300       this.endgameMessage = message;
 301       let modalBox = document.getElementById("modalEog");
 302       modalBox.checked = true;
 303       setTimeout(() => {
 304         modalBox.checked = false;
 305       }, 2000);
 306     },
 307     animateMove: function(move, callback) {
 308       let startSquare = document.getElementById(getSquareId(move.start));
 309       let endSquare = document.getElementById(getSquareId(move.end));
 310       let rectStart = startSquare.getBoundingClientRect();
 311       let rectEnd = endSquare.getBoundingClientRect();
 312       let translation = {
 313         x: rectEnd.x - rectStart.x,
 314         y: rectEnd.y - rectStart.y
 315       };
 316       let movingPiece = document.querySelector(
 317         "#" + getSquareId(move.start) + " > img.piece"
 318       );
 319       // HACK for animation (with positive translate, image slides "under background")
 320       // Possible improvement: just alter squares on the piece's way...
 321       const squares = document.getElementsByClassName("board");
 322       for (let i = 0; i < squares.length; i++) {
 323         let square = squares.item(i);
 324         if (square.id != getSquareId(move.start)) square.style.zIndex = "-1";
 325       }
 326       movingPiece.style.transform =
 327         "translate(" + translation.x + "px," + translation.y + "px)";
 328       movingPiece.style.transitionDuration = "0.25s";
 329       movingPiece.style.zIndex = "3000";
 330       setTimeout(() => {
 331         for (let i = 0; i < squares.length; i++)
 332           squares.item(i).style.zIndex = "auto";
 333         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 334         callback();
 335       }, 250);
 336     },
 337     play: function(move, receive) {
 338       // NOTE: navigate and receive are mutually exclusive
 339       const navigate = !move;
 340       // Forbid playing outside analyze mode, except if move is received.
 341       // Sufficient condition because Board already knows which turn it is.
 342       if (
 343         !navigate &&
 344         this.game.mode != "analyze" &&
 345         !receive &&
 346         (this.game.score != "*" || this.cursor < this.moves.length - 1)
 347       ) {
 348         return;
 349       }
 350       const doPlayMove = () => {
 351         // To play a move, cursor must be at the end of the game:
 352         if (!!receive && this.cursor < this.moves.length - 1) this.gotoEnd();
 353         if (navigate) {
 354           if (this.cursor == this.moves.length - 1) return; //no more moves
 355           move = this.moves[this.cursor + 1];
 356         } else {
 357           move.color = this.vr.turn;
 358           move.notation = this.vr.getNotation(move);
 359         }
 360         this.vr.play(move);
 361         this.cursor++;
 362         this.lastMove = move;
 363         if (this.st.settings.sound == 2)
 364           new Audio("/sounds/move.mp3").play().catch(() => {});
 365         if (!navigate) {
 366           move.fen = this.vr.getFen();
 367           // Stack move on movesList at current cursor
 368           if (this.cursor == this.moves.length) this.moves.push(move);
 369           else this.moves = this.moves.slice(0, this.cursor).concat([move]);
 370         }
 371         // Is opponent in check?
 372         this.incheck = this.vr.getCheckSquares(this.vr.turn);
 373         const score = this.vr.getCurrentScore();
 374         if (score != "*") {
 375           const message = getScoreMessage(score);
 376           if (this.game.mode != "analyze")
 377             this.$emit("gameover", score, message);
 378           //just show score on screen (allow undo)
 379           else this.showEndgameMsg(score + " . " + message);
 380         }
 381         if (!navigate && this.game.mode != "analyze")
 382           this.$emit("newmove", move); //post-processing (e.g. computer play)
 383       };
 384       if (!!receive && this.game.vname != "Dark")
 385         this.animateMove(move, doPlayMove);
 386       else doPlayMove();
 387     },
 388     undo: function(move) {
 389       const navigate = !move;
 390       if (navigate) {
 391         if (this.cursor < 0) return; //no more moves
 392         move = this.moves[this.cursor];
 393       }
 394       this.vr.undo(move);
 395       this.cursor--;
 396       this.lastMove = this.cursor >= 0 ? this.moves[this.cursor] : undefined;
 397       if (this.st.settings.sound == 2)
 398         new Audio("/sounds/undo.mp3").play().catch(() => {});
 399       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 400       if (!navigate) this.moves.pop();
 401     },
 402     gotoMove: function(index) {
 403       this.vr.re_init(this.moves[index].fen);
 404       this.cursor = index;
 405       this.lastMove = this.moves[index];
 406     },
 407     gotoBegin: function() {
 408       if (this.cursor == -1) return;
 409       this.vr.re_init(this.game.fenStart);
 410       if (this.moves.length > 0 && this.moves[0].notation == "...") {
 411         this.cursor = 0;
 412         this.lastMove = this.moves[0];
 413       } else {
 414         this.cursor = -1;
 415         this.lastMove = null;
 416       }
 417     },
 418     gotoEnd: function() {
 419       if (this.cursor == this.moves.length - 1) return;
 420       this.gotoMove(this.moves.length - 1);
 421     },
 422     flip: function() {
 423       this.orientation = V.GetOppCol(this.orientation);
 424     }
 425   }
 426 };
 427 </script>
 428
 429 <style lang="sass" scoped>
 430 [type="checkbox"]#modalEog+div .card
 431   min-height: 45px
 432
 433 [type="checkbox"]#modalAdjust+div .card
 434   padding: 5px
 435
 436 #baseGame
 437   width: 100%
 438   &:focus
 439     outline: none
 440
 441 #gameContainer
 442   margin-left: auto
 443   margin-right: auto
 444
 445 #downloadDiv
 446   display: inline-block
 447
 448 #controls
 449   margin: 0 auto
 450   button
 451     display: inline-block
 452     width: 20%
 453     margin: 0
 454
 455 #turnIndicator
 456   text-align: center
 457   font-weight: bold
 458
 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
 471 #boardContainer
 472   float: left
 473 // TODO: later, maybe, allow movesList of variable width
 474 // or e.g. between 250 and 350px (but more complicated)
 475
 476 #movesList
 477   width: 280px
 478   float: left
 479
 480 @media screen and (max-width: 767px)
 481   #movesList
 482     width: 100%
 483     float: none
 484     clear: both
 485 </style>