client/src/components/BaseGame.vue

   1 <template lang="pug">
   2 div#baseGame(tabindex=-1 @click="focusBg()"
   3     @keydown="handleKeys($event)" @wheel="handleScroll($event)")
   4   input#modalEog.modal(type="checkbox")
   5   div#eogDiv(role="dialog" data-checkbox="modalEog")
   6     .card.text-center
   7       label.modal-close(for="modalEog")
   8       h3.section {{ endgameMessage }}
   9   input#modalAdjust.modal(type="checkbox")
  10   div#adjuster(role="dialog" data-checkbox="modalAdjust")
  11     .card.text-center
  12       label.modal-close(for="modalAdjust")
  13       label(for="boardSize") {{ st.tr["Board size"] }}
  14       input#boardSize.slider(type="range" min="0" max="100" value="50"
  15         @input="adjustBoard()")
  16   #gameContainer
  17     #boardContainer
  18       Board(:vr="vr" :last-move="lastMove" :analyze="analyze"
  19         :user-color="game.mycolor" :orientation="orientation"
  20         :vname="game.vname" :incheck="incheck" @play-move="play")
  21       #turnIndicator(v-if="game.vname=='Dark' && game.score=='*'")
  22         | {{ turn }}
  23       #controls
  24         button(@click="gotoBegin()") <<
  25         button(@click="undo()") <
  26         button(@click="flip()") &#8645;
  27         button(@click="play()") >
  28         button(@click="gotoEnd()") >>
  29       #belowControls
  30         #downloadDiv(v-if="game.vname!='Dark' || game.score!='*'")
  31           a#download(href="#")
  32           button(@click="download()") {{ st.tr["Download"] }} PGN
  33         button(onClick="doClick('modalAdjust')") &#10530;
  34         button(v-if="game.vname!='Dark' && game.mode!='analyze'"
  35             @click="analyzePosition()")
  36           | {{ st.tr["Analyse"] }}
  37         // NOTE: rather ugly hack to avoid showing twice "rules" link...
  38         button(v-if="!$route.path.match('/variants/')" @click="showRules()")
  39           | {{ st.tr["Rules"] }}
  40     #movesList
  41       MoveList(v-if="showMoves" :score="game.score" :message="game.scoreMsg"
  42         :firstNum="firstMoveNumber" :moves="moves" :cursor="cursor"
  43         @goto-move="gotoMove")
  44     .clearer
  45 </template>
  46
  47 <script>
  48 import Board from "@/components/Board.vue";
  49 import MoveList from "@/components/MoveList.vue";
  50 import { store } from "@/store";
  51 import { getSquareId } from "@/utils/squareId";
  52 import { getDate } from "@/utils/datetime";
  53 import { processModalClick } from "@/utils/modalClick";
  54 import { getScoreMessage } from "@/utils/scoring";
  55 export default {
  56   name: 'my-base-game',
  57   components: {
  58     Board,
  59     MoveList,
  60   },
  61   // "vr": VariantRules object, describing the game state + rules
  62   props: ["vr","game"],
  63   data: function() {
  64     return {
  65       st: store.state,
  66       // NOTE: all following variables must be reset at the beginning of a game
  67       endgameMessage: "",
  68       orientation: "w",
  69       score: "*", //'*' means 'unfinished'
  70       moves: [],
  71       cursor: -1, //index of the move just played
  72       lastMove: null,
  73       firstMoveNumber: 0, //for printing
  74       incheck: [], //for Board
  75     };
  76   },
  77   watch: {
  78     // game initial FEN changes when a new game starts
  79     "game.fenStart": function() {
  80       this.re_setVariables();
  81     },
  82     // Received a new move to play:
  83     "game.moveToPlay": function(newMove) {
  84       if (!!newMove) //if stop + launch new game, get undefined move
  85         this.play(newMove, "receive");
  86     },
  87     // ...Or to undo (corr game, move not validated)
  88     "game.moveToUndo": function(move) {
  89       if (!!move)
  90         this.undo(move);
  91     },
  92   },
  93   computed: {
  94     showMoves: function() {
  95       return this.game.vname != "Dark" || this.game.score != "*";
  96     },
  97     turn: function() {
  98       let color = "";
  99       const L = this.moves.length;
 100       if (L == 0 || this.moves[L-1].color == "b")
 101         color = "White";
 102       else //if (this.moves[L-1].color == "w")
 103         color = "Black";
 104       return this.st.tr[color + " to move"];
 105     },
 106     analyze: function() {
 107       return this.game.mode=="analyze" ||
 108         // From Board viewpoint, a finished Dark game == analyze (TODO: unclear)
 109         (this.game.vname == "Dark" && this.game.score != "*");
 110     },
 111   },
 112   created: function() {
 113     if (!!this.game.fenStart)
 114       this.re_setVariables();
 115   },
 116   mounted: function() {
 117     [document.getElementById("eogDiv"),document.getElementById("adjuster")]
 118       .forEach(elt => elt.addEventListener("click", processModalClick));
 119     // Take full width on small screens:
 120     let boardSize = parseInt(localStorage.getItem("boardSize"));
 121     if (!boardSize)
 122     {
 123       boardSize = (window.innerWidth >= 768
 124         ? 0.75 * Math.min(window.innerWidth, window.innerHeight)
 125         : window.innerWidth);
 126     }
 127     const movesWidth = (window.innerWidth >= 768 ? 280 : 0);
 128     document.getElementById("boardContainer").style.width = boardSize + "px";
 129     let gameContainer = document.getElementById("gameContainer");
 130     gameContainer.style.width = (boardSize + movesWidth) + "px";
 131     document.getElementById("boardSize").value = (boardSize * 100) / (window.innerWidth - movesWidth);
 132     // timeout to avoid calling too many time the adjust method
 133     let timeoutLaunched = false;
 134     window.addEventListener("resize", (e) => {
 135       if (!timeoutLaunched)
 136       {
 137         timeoutLaunched = true;
 138         setTimeout( () => {
 139           this.adjustBoard();
 140           timeoutLaunched = false;
 141         }, 500);
 142       }
 143     });
 144   },
 145   methods: {
 146     focusBg: function() {
 147       // NOTE: small blue border appears...
 148       document.getElementById("baseGame").focus();
 149     },
 150     adjustBoard: function() {
 151       const boardContainer = document.getElementById("boardContainer");
 152       if (!boardContainer)
 153         return; //no board on page
 154       const k = document.getElementById("boardSize").value;
 155       const movesWidth = (window.innerWidth >= 768 ? 280 : 0);
 156       const minBoardWidth = 240; //TODO: these 240 and 280 are arbitrary...
 157       // Value of 0 is board min size; 100 is window.width [- movesWidth]
 158       const boardSize = minBoardWidth +
 159         k * (window.innerWidth - (movesWidth+minBoardWidth)) / 100;
 160       localStorage.setItem("boardSize", boardSize);
 161       boardContainer.style.width = boardSize + "px";
 162       document.getElementById("gameContainer").style.width =
 163         (boardSize + movesWidth) + "px";
 164     },
 165     handleKeys: function(e) {
 166       if ([32,37,38,39,40].includes(e.keyCode))
 167         e.preventDefault();
 168       switch (e.keyCode)
 169       {
 170         case 37:
 171           this.undo();
 172           break;
 173         case 39:
 174           this.play();
 175           break;
 176         case 38:
 177           this.gotoBegin();
 178           break;
 179         case 40:
 180           this.gotoEnd();
 181           break;
 182         case 32:
 183           this.flip();
 184           break;
 185       }
 186     },
 187     handleScroll: function(e) {
 188       // NOTE: since game.mode=="analyze" => no score, next condition is enough
 189       if (this.game.score != "*")
 190       {
 191         e.preventDefault();
 192         if (e.deltaY < 0)
 193           this.undo();
 194         else if (e.deltaY > 0)
 195           this.play();
 196       }
 197     },
 198     showRules: function() {
 199       //this.$router.push("/variants/" + this.game.vname);
 200       window.open("#/variants/" + this.game.vname, "_blank"); //better
 201     },
 202     re_setVariables: function() {
 203       this.endgameMessage = "";
 204       this.orientation = this.game.mycolor || "w"; //default orientation for observed games
 205       this.moves = JSON.parse(JSON.stringify(this.game.moves || []));
 206       // Post-processing: decorate each move with color + current FEN:
 207       // (to be able to jump to any position quickly)
 208       let vr_tmp = new V(this.game.fenStart); //vr is already at end of game
 209       this.firstMoveNumber =
 210         Math.floor(V.ParseFen(this.game.fenStart).movesCount / 2);
 211       this.moves.forEach(move => {
 212         // NOTE: this is doing manually what play() function below achieve,
 213         // but in a lighter "fast-forward" way
 214         move.color = vr_tmp.turn;
 215         move.notation = vr_tmp.getNotation(move);
 216         vr_tmp.play(move);
 217         move.fen = vr_tmp.getFen();
 218       });
 219       if (this.game.fenStart.indexOf(" b ") >= 0 ||
 220         (this.moves.length > 0 && this.moves[0].color == "b"))
 221       {
 222         // 'end' is required for Board component to check lastMove for e.p.
 223         this.moves.unshift({color: "w", notation: "...", end: {x:-1,y:-1}});
 224       }
 225       const L = this.moves.length;
 226       this.cursor = L-1;
 227       this.lastMove = (L > 0 ? this.moves[L-1]  : null);
 228       this.incheck = [];
 229     },
 230     analyzePosition: function() {
 231       const newUrl = "/analyse/" + this.game.vname +
 232         "/?fen=" + this.vr.getFen().replace(/ /g, "_");
 233       if (this.game.type == "live")
 234         this.$router.push(newUrl); //open in same tab: against cheating...
 235       else
 236         window.open("#" + newUrl); //open in a new tab: more comfortable
 237     },
 238     download: function() {
 239       const content = this.getPgn();
 240       // Prepare and trigger download link
 241       let downloadAnchor = document.getElementById("download");
 242       downloadAnchor.setAttribute("download", "game.pgn");
 243       downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
 244       downloadAnchor.click();
 245     },
 246     getPgn: function() {
 247       let pgn = "";
 248       pgn += '[Site "vchess.club"]\n';
 249       pgn += '[Variant "' + this.game.vname + '"]\n';
 250       pgn += '[Date "' + getDate(new Date()) + '"]\n';
 251       pgn += '[White "' + this.game.players[0].name + '"]\n';
 252       pgn += '[Black "' + this.game.players[1].name + '"]\n';
 253       pgn += '[Fen "' + this.game.fenStart + '"]\n';
 254       pgn += '[Result "' + this.game.score + '"]\n\n';
 255       let counter = 1;
 256       let i = 0;
 257       while (i < this.moves.length)
 258       {
 259         pgn += (counter++) + ".";
 260         for (let color of ["w","b"])
 261         {
 262           let move = "";
 263           while (i < this.moves.length && this.moves[i].color == color)
 264             move += this.moves[i++].notation + ",";
 265           move = move.slice(0,-1); //remove last comma
 266           pgn += move + (i < this.moves.length ? " " : "");
 267         }
 268       }
 269       return pgn + "\n";
 270     },
 271     showEndgameMsg: function(message) {
 272       this.endgameMessage = message;
 273       let modalBox = document.getElementById("modalEog");
 274       modalBox.checked = true;
 275       setTimeout(() => { modalBox.checked = false; }, 2000);
 276     },
 277     animateMove: function(move, callback) {
 278       let startSquare = document.getElementById(getSquareId(move.start));
 279       // TODO: error "flush nextTick callbacks" when observer reloads page:
 280       // this late check is not a fix!
 281       if (!startSquare)
 282         return;
 283       let endSquare = document.getElementById(getSquareId(move.end));
 284       let rectStart = startSquare.getBoundingClientRect();
 285       let rectEnd = endSquare.getBoundingClientRect();
 286       let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
 287       let movingPiece =
 288         document.querySelector("#" + getSquareId(move.start) + " > img.piece");
 289       if (!movingPiece) //TODO: shouldn't happen
 290         return;
 291       // HACK for animation (with positive translate, image slides "under background")
 292       // Possible improvement: just alter squares on the piece's way...
 293       const squares = document.getElementsByClassName("board");
 294       for (let i=0; i<squares.length; i++)
 295       {
 296         let square = squares.item(i);
 297         if (square.id != getSquareId(move.start))
 298           square.style.zIndex = "-1";
 299       }
 300       movingPiece.style.transform = "translate(" + translation.x + "px," +
 301         translation.y + "px)";
 302       movingPiece.style.transitionDuration = "0.2s";
 303       movingPiece.style.zIndex = "3000";
 304       setTimeout( () => {
 305         for (let i=0; i<squares.length; i++)
 306           squares.item(i).style.zIndex = "auto";
 307         movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 308         callback();
 309       }, 250);
 310     },
 311     play: function(move, receive) {
 312       // NOTE: navigate and receive are mutually exclusive
 313       const navigate = !move;
 314       // Forbid playing outside analyze mode, except if move is received.
 315       // Sufficient condition because Board already knows which turn it is.
 316       if (!navigate && this.game.mode!="analyze" && !receive
 317         && (this.game.score != "*" || this.cursor < this.moves.length-1))
 318       {
 319         return;
 320       }
 321       const doPlayMove = () => {
 322         if (!!receive && this.cursor < this.moves.length-1)
 323           this.gotoEnd(); //required to play the move
 324         if (navigate)
 325         {
 326           if (this.cursor == this.moves.length-1)
 327             return; //no more moves
 328           move = this.moves[this.cursor+1];
 329         }
 330         else
 331         {
 332           move.color = this.vr.turn;
 333           move.notation = this.vr.getNotation(move);
 334         }
 335         this.vr.play(move);
 336         this.cursor++;
 337         this.lastMove = move;
 338         if (this.st.settings.sound == 2)
 339           new Audio("/sounds/move.mp3").play().catch(err => {});
 340         if (!navigate)
 341         {
 342           move.fen = this.vr.getFen();
 343           // Stack move on movesList at current cursor
 344           if (this.cursor == this.moves.length)
 345             this.moves.push(move);
 346           else
 347             this.moves = this.moves.slice(0,this.cursor).concat([move]);
 348         }
 349         // Is opponent in check?
 350         this.incheck = this.vr.getCheckSquares(this.vr.turn);
 351         const score = this.vr.getCurrentScore();
 352         if (score != "*")
 353         {
 354           const message = getScoreMessage(score);
 355           if (this.game.mode != "analyze")
 356             this.$emit("gameover", score, message);
 357           else //just show score on screen (allow undo)
 358             this.showEndgameMsg(score + " . " + message);
 359         }
 360         if (!navigate && this.game.mode!="analyze")
 361           this.$emit("newmove", move); //post-processing (e.g. computer play)
 362       };
 363       if (!!receive && this.game.vname != "Dark")
 364         this.animateMove(move, doPlayMove);
 365       else
 366         doPlayMove();
 367     },
 368     undo: function(move) {
 369       const navigate = !move;
 370       if (navigate)
 371       {
 372         if (this.cursor < 0)
 373           return; //no more moves
 374         move = this.moves[this.cursor];
 375       }
 376       this.vr.undo(move);
 377       this.cursor--;
 378       this.lastMove = (this.cursor >= 0 ? this.moves[this.cursor] : undefined);
 379       if (this.st.settings.sound == 2)
 380         new Audio("/sounds/undo.mp3").play().catch(err => {});
 381       this.incheck = this.vr.getCheckSquares(this.vr.turn);
 382       if (!navigate)
 383         this.moves.pop();
 384     },
 385     gotoMove: function(index) {
 386       this.vr.re_init(this.moves[index].fen);
 387       this.cursor = index;
 388       this.lastMove = this.moves[index];
 389     },
 390     gotoBegin: function() {
 391       if (this.cursor == -1)
 392         return;
 393       this.vr.re_init(this.game.fenStart);
 394       if (this.moves.length > 0 && this.moves[0].notation == "...")
 395       {
 396         this.cursor = 0;
 397         this.lastMove = this.moves[0];
 398       }
 399       else
 400       {
 401         this.cursor = -1;
 402         this.lastMove = null;
 403       }
 404     },
 405     gotoEnd: function() {
 406       if (this.cursor == this.moves.length - 1)
 407         return;
 408       this.gotoMove(this.moves.length-1);
 409     },
 410     flip: function() {
 411       this.orientation = V.GetOppCol(this.orientation);
 412     },
 413   },
 414 };
 415 </script>
 416
 417 <style lang="sass" scoped>
 418 [type="checkbox"]#modalEog+div .card
 419   min-height: 45px
 420 [type="checkbox"]#modalAdjust+div .card
 421   padding: 5px
 422
 423 #baseGame
 424   width: 100%
 425   &:focus
 426     outline: none
 427
 428 #gameContainer
 429   margin-left: auto
 430   margin-right: auto
 431
 432 #downloadDiv
 433   display: inline-block
 434
 435 #controls
 436   margin: 0 auto
 437   button
 438     display: inline-block
 439     width: 20%
 440     margin: 0
 441 #turnIndicator
 442   text-align: center
 443 #belowControls
 444   border-top: 1px solid #2f4f4f
 445   text-align: center
 446   margin: 0 auto
 447   & > #downloadDiv
 448     margin: 0
 449     & > button
 450       margin: 0
 451   & > button
 452     border-left: 1px solid #2f4f4f
 453     margin: 0
 454 #boardContainer
 455   float: left
 456 // TODO: later, maybe, allow movesList of variable width
 457 // or e.g. between 250 and 350px (but more complicated)
 458 #movesList
 459   width: 280px
 460   float: left
 461 @media screen and (max-width: 767px)
 462   #movesList
 463     width: 100%
 464     float: none
 465     clear: both
 466 </style>