public/javascripts/components/game.js

   1 // TODO: use indexedDB instead of localStorage? (more flexible: allow several games)
   2 Vue.component('my-game', {
   3     data: function() {
   4         return {
   5             vr: null, //object to check moves, store them, FEN..
   6             mycolor: "w",
   7             possibleMoves: [], //filled after each valid click/dragstart
   8             choices: [], //promotion pieces, or checkered captures... (contain possible pieces)
   9             start: {}, //pixels coordinates + id of starting square (click or drag)
  10             selectedPiece: null, //moving piece (or clicked piece)
  11             conn: null, //socket messages
  12             score: "*", //'*' means 'unfinished'
  13             mode: "idle", //human, computer or idle (when not playing)
  14             oppid: "", //opponent ID in case of HH game
  15             oppConnected: false,
  16             seek: false,
  17             fenStart: "",
  18             incheck: [],
  19         };
  20     },
  21     render(h) {
  22         let [sizeX,sizeY] = VariantRules.size;
  23         // Precompute hints squares to facilitate rendering
  24         let hintSquares = doubleArray(sizeX, sizeY, false);
  25         this.possibleMoves.forEach(m => { hintSquares[m.end.x][m.end.y] = true; });
  26         // Also precompute in-check squares
  27         let incheckSq = doubleArray(sizeX, sizeY, false);
  28         this.incheck.forEach(sq => { incheckSq[sq[0]][sq[1]] = true; });
  29         let elementArray = [];
  30         let square00 = document.getElementById("sq-0-0");
  31         let squareWidth = !!square00
  32             ? parseFloat(window.getComputedStyle(square00).width.slice(0,-2))
  33             : 0;
  34         const playingHuman = (this.mode == "human");
  35         const playingComp = (this.mode == "computer");
  36         let actionArray = [
  37             h('button',
  38                 {
  39                     on: { click: this.clickGameSeek },
  40                     attrs: { "aria-label": 'New game VS human' },
  41                     'class': {
  42                         "tooltip": true,
  43                         "seek": this.seek,
  44                         "playing": playingHuman,
  45                     },
  46                 },
  47                 [h('i', { 'class': { "material-icons": true } }, "accessibility")]),
  48             h('button',
  49                 {
  50                     on: { click: this.clickComputerGame },
  51                     attrs: { "aria-label": 'New game VS computer' },
  52                     'class': {
  53                         "tooltip":true,
  54                         "playing": playingComp,
  55                     },
  56                 },
  57                 [h('i', { 'class': { "material-icons": true } }, "computer")])
  58         ];
  59         if (!!this.vr)
  60         {
  61             if (this.mode == "human")
  62             {
  63                 let connectedIndic = h(
  64                     'div',
  65                     {
  66                         "class": {
  67                             "connected": this.oppConnected,
  68                             "disconnected": !this.oppConnected,
  69                         },
  70                     }
  71                 );
  72                 elementArray.push(connectedIndic);
  73             }
  74             let choices = h('div',
  75                 {
  76                     attrs: { "id": "choices" },
  77                     'class': { 'row': true },
  78                     style: {
  79                         //"position": "relative",
  80                         "display": this.choices.length>0?"block":"none",
  81                         "top": "-" + ((sizeY/2)*squareWidth+squareWidth/2) + "px",
  82                         "width": (this.choices.length * squareWidth) + "px",
  83                         "height": squareWidth + "px",
  84                     },
  85                 },
  86                 this.choices.map( m => { //a "choice" is a move
  87                     return h('div',
  88                         {
  89                             'class': { 'board': true },
  90                             style: {
  91                                 'width': (100/this.choices.length) + "%",
  92                                 'padding-bottom': (100/this.choices.length) + "%",
  93                             },
  94                         },
  95                         [h('img',
  96                             {
  97                                 attrs: { "src": '/images/pieces/' + VariantRules.getPpath(m.appear[0].c+m.appear[0].p) + '.svg' },
  98                                 'class': { 'choice-piece': true, 'board': true },
  99                                 on: { "click": e => { this.play(m); this.choices=[]; } },
 100                             })
 101                         ]
 102                     );
 103                 })
 104             );
 105             // Create board element (+ reserves if needed by variant or mode)
 106             let gameDiv = h('div',
 107                 {
 108                     'class': { 'game': true },
 109                 },
 110                 [_.range(sizeX).map(i => {
 111                     let ci = this.mycolor=='w' ? i : sizeX-i-1;
 112                     return h(
 113                         'div',
 114                         {
 115                             'class': {
 116                                 'row': true,
 117                             },
 118                             style: { 'opacity': this.choices.length>0?"0.5":"1" },
 119                         },
 120                         _.range(sizeY).map(j => {
 121                             let cj = this.mycolor=='w' ? j : sizeY-j-1;
 122                             let elems = [];
 123                             if (this.vr.board[ci][cj] != VariantRules.EMPTY)
 124                             {
 125                                 elems.push(
 126                                     h(
 127                                         'img',
 128                                         {
 129                                             'class': {
 130                                                 'piece': true,
 131                                                 'ghost': !!this.selectedPiece && this.selectedPiece.parentNode.id == "sq-"+ci+"-"+cj,
 132                                             },
 133                                             attrs: {
 134                                                 src: "/images/pieces/" + VariantRules.getPpath(this.vr.board[ci][cj]) + ".svg",
 135                                             },
 136                                         }
 137                                     )
 138                                 );
 139                             }
 140                             if (hintSquares[ci][cj])
 141                             {
 142                                 elems.push(
 143                                     h(
 144                                         'img',
 145                                         {
 146                                             'class': {
 147                                                 'mark-square': true,
 148                                             },
 149                                             attrs: {
 150                                                 src: "/images/mark.svg",
 151                                             },
 152                                         }
 153                                     )
 154                                 );
 155                             }
 156                             const lm = this.vr.lastMove;
 157                             const highlight = !!lm && _.isMatch(lm.end, {x:ci,y:cj});
 158                             return h(
 159                                 'div',
 160                                 {
 161                                     'class': {
 162                                         'board': true,
 163                                         'light-square': !highlight && (i+j)%2==0,
 164                                         'dark-square': !highlight && (i+j)%2==1,
 165                                         'highlight': highlight,
 166                                         'incheck': incheckSq[ci][cj],
 167                                     },
 168                                     attrs: {
 169                                         id: this.getSquareId({x:ci,y:cj}),
 170                                     },
 171                                 },
 172                                 elems
 173                             );
 174                         })
 175                     );
 176                 }), choices]
 177             );
 178             actionArray.push(
 179                 h('button',
 180                     {
 181                         on: { click: this.resign },
 182                         attrs: { "aria-label": 'Resign' },
 183                         'class': { "tooltip":true },
 184                     },
 185                     [h('i', { 'class': { "material-icons": true } }, "flag")])
 186             );
 187             elementArray.push(gameDiv);
 188     //          if (!!vr.reserve)
 189     //          {
 190     //              let reserve = h('div',
 191     //                  {'class':{'game':true}}, [
 192     //                      h('div',
 193     //                          { 'class': { 'row': true }},
 194     //                          [
 195     //                              h('div',
 196     //                                  {'class':{'board':true}},
 197     //                                  [h('img',{'class':{"piece":true},attrs:{"src":"/images/pieces/wb.svg"}})]
 198     //                              )
 199     //                          ]
 200     //                      )
 201     //                  ],
 202     //              );
 203     //              elementArray.push(reserve);
 204     //          }
 205             const eogMessage = this.getEndgameMessage(this.score);
 206             let elemsOfEog =
 207             [
 208                 h('label',
 209                     {
 210                         attrs: { "for": "modal-eog" },
 211                         "class": { "modal-close": true },
 212                     }
 213                 ),
 214                 h('h3',
 215                     {
 216                         "class": { "section": true },
 217                         domProps: { innerHTML: eogMessage },
 218                     }
 219                 )
 220             ];
 221             if (this.score != "*")
 222             {
 223                 elemsOfEog.push(
 224                     h('p', //'textarea', //TODO: selectable!
 225                         {
 226                             domProps: { innerHTML: this.vr.getPGN(this.mycolor, this.score, this.fenStart) },
 227                             //attrs: { "readonly": true },
 228                         }
 229                     )
 230                 );
 231             }
 232             const modalEog = [
 233                 h('input',
 234                     {
 235                         attrs: { "id": "modal-eog", type: "checkbox" },
 236                         "class": { "modal": true },
 237                     }),
 238                 h('div',
 239                     {
 240                         attrs: { "role": "dialog", "aria-labelledby": "dialog-title" },
 241                     },
 242                     [
 243                         h('div',
 244                             {
 245                                 "class": { "card": true, "smallpad": true },
 246                             },
 247                             elemsOfEog
 248                         )
 249                     ]
 250                 )
 251             ];
 252             elementArray = elementArray.concat(modalEog);
 253         }
 254         const modalNewgame = [
 255             h('input',
 256                 {
 257                     attrs: { "id": "modal-newgame", type: "checkbox" },
 258                     "class": { "modal": true },
 259                 }),
 260             h('div',
 261                 {
 262                     attrs: { "role": "dialog", "aria-labelledby": "dialog-title" },
 263                 },
 264                 [
 265                     h('div',
 266                         {
 267                             "class": { "card": true, "smallpad": true },
 268                         },
 269                         [
 270                             h('label',
 271                                 {
 272                                     attrs: { "id": "close-newgame", "for": "modal-newgame" },
 273                                     "class": { "modal-close": true },
 274                                 }
 275                             ),
 276                             h('h3',
 277                                 {
 278                                     "class": { "section": true },
 279                                     domProps: { innerHTML: "New game" },
 280                                 }
 281                             ),
 282                             h('p',
 283                                 {
 284                                     "class": { "section": true },
 285                                     domProps: { innerHTML: "Waiting for opponent..." },
 286                                 }
 287                             )
 288                         ]
 289                     )
 290                 ]
 291             )
 292         ];
 293         elementArray = elementArray.concat(modalNewgame);
 294         const actions = h('div',
 295             {
 296                 attrs: { "id": "actions" },
 297                 'class': { 'text-center': true },
 298             },
 299             actionArray
 300         );
 301         elementArray.push(actions);
 302         return h(
 303             'div',
 304             {
 305                 'class': {
 306                     "col-sm-12":true,
 307                     "col-md-8":true,
 308                     "col-md-offset-2":true,
 309                     "col-lg-6":true,
 310                     "col-lg-offset-3":true,
 311                 },
 312                 // NOTE: click = mousedown + mouseup --> what about smartphone?!
 313                 on: {
 314                     mousedown: this.mousedown,
 315                     mousemove: this.mousemove,
 316                     mouseup: this.mouseup,
 317                     touchdown: this.mousedown,
 318                     touchmove: this.mousemove,
 319                     touchup: this.mouseup,
 320                 },
 321             },
 322             elementArray
 323         );
 324     },
 325     created: function() {
 326         const url = socketUrl;
 327         const continuation = (localStorage.getItem("variant") === variant);
 328         this.myid = continuation
 329             ? localStorage.getItem("myid")
 330             // random enough (TODO: function)
 331             : (Date.now().toString(36) + Math.random().toString(36).substr(2, 7)).toUpperCase();
 332         this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
 333         const socketOpenListener = () => {
 334             if (continuation)
 335             {
 336                 const fen = localStorage.getItem("fen");
 337                 const mycolor = localStorage.getItem("mycolor");
 338                 const oppid = localStorage.getItem("oppid");
 339                 const moves = JSON.parse(localStorage.getItem("moves"));
 340                 this.newGame("human", fen, mycolor, oppid, moves, true);
 341                 // Send ping to server (answer pong if opponent is connected)
 342                 this.conn.send(JSON.stringify({code:"ping",oppid:this.oppid}));
 343             }
 344             else if (localStorage.getItem("newgame") === variant)
 345             {
 346                 // New game request has been cancelled on disconnect
 347                 this.seek = true;
 348                 this.newGame("human", undefined, undefined, undefined, undefined, "reconnect");
 349             }
 350         };
 351         const socketMessageListener = msg => {
 352             const data = JSON.parse(msg.data);
 353             console.log("Receive message: " + data.code);
 354             switch (data.code)
 355             {
 356                 case "newgame": //opponent found
 357                     this.newGame("human", data.fen, data.color, data.oppid); //oppid: opponent socket ID
 358                     break;
 359                 case "newmove": //..he played!
 360                     this.play(data.move, "animate");
 361                     break;
 362                 case "pong": //received if we sent a ping (game still alive on our side)
 363                     this.oppConnected = true;
 364                     const L = this.vr.moves.length;
 365                     // Send our "last state" informations to opponent
 366                     this.conn.send(JSON.stringify({
 367                         code:"lastate",
 368                         oppid:this.oppid,
 369                         lastMove:L>0?this.vr.moves[L-1]:undefined,
 370                         movesCount:L,
 371                     }));
 372                     break;
 373                 case "lastate": //got opponent infos about last move (we might have resigned)
 374                     if (this.mode!="human" || this.oppid!=data.oppid)
 375                     {
 376                         // OK, we resigned
 377                         this.conn.send(JSON.stringify({
 378                             code:"lastate",
 379                             oppid:this.oppid,
 380                             lastMove:undefined,
 381                             movesCount:-1,
 382                         }));
 383                     }
 384                     else if (data.movesCount < 0)
 385                     {
 386                         // OK, he resigned
 387                         this.endGame(this.mycolor=="w"?"1-0":"0-1");
 388                     }
 389                     else if (data.movesCount < this.vr.moves.length)
 390                     {
 391                         // We must tell last move to opponent
 392                         const L = this.vr.moves.length;
 393                         this.conn.send(JSON.stringify({
 394                             code:"lastate",
 395                             oppid:this.oppid,
 396                             lastMove:this.vr.moves[L-1],
 397                             movesCount:L,
 398                         }));
 399                     }
 400                     else if (data.movesCount > this.vr.moves.length) //just got last move from him
 401                         this.play(data.lastMove, "animate");
 402                     break;
 403                 case "resign": //..you won!
 404                     this.endGame(this.mycolor=="w"?"1-0":"0-1");
 405                     break;
 406                 // TODO: also use (dis)connect info to count online players?
 407                 case "connect":
 408                 case "disconnect":
 409                     if (this.mode == "human" && this.oppid == data.id)
 410                         this.oppConnected = (data.code == "connect");
 411                     break;
 412             }
 413         };
 414         const socketCloseListener = () => {
 415             this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
 416             this.conn.addEventListener('open', socketOpenListener);
 417             this.conn.addEventListener('message', socketMessageListener);
 418             this.conn.addEventListener('close', socketCloseListener);
 419         };
 420         this.conn.onopen = socketOpenListener;
 421         this.conn.onmessage = socketMessageListener;
 422         this.conn.onclose = socketCloseListener;
 423     },
 424     methods: {
 425         endGame: function(score) {
 426             this.score = score;
 427             let modalBox = document.getElementById("modal-eog");
 428             modalBox.checked = true;
 429             //setTimeout(() => { modalBox.checked = false; }, 2000); //disabled, to show PGN
 430             if (this.mode == "human")
 431                 this.clearStorage();
 432             this.mode = "idle";
 433             this.oppid = "";
 434         },
 435         getEndgameMessage: function(score) {
 436             let eogMessage = "Unfinished";
 437             switch (this.score)
 438             {
 439                 case "1-0":
 440                     eogMessage = "White win";
 441                     break;
 442                 case "0-1":
 443                     eogMessage = "Black win";
 444                     break;
 445                 case "1/2":
 446                     eogMessage = "Draw";
 447                     break;
 448             }
 449             return eogMessage;
 450         },
 451         resign: function() {
 452             if (this.mode == "human" && this.oppConnected)
 453             {
 454                 try {
 455                     this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
 456                 } catch (INVALID_STATE_ERR) {
 457                     return; //socket is not ready (and not yet reconnected)
 458                 }
 459             }
 460             this.endGame(this.mycolor=="w"?"0-1":"1-0");
 461         },
 462         setStorage: function() {
 463             localStorage.setItem("myid", this.myid);
 464             localStorage.setItem("variant", variant);
 465             localStorage.setItem("mycolor", this.mycolor);
 466             localStorage.setItem("oppid", this.oppid);
 467             localStorage.setItem("fenStart", this.fenStart);
 468             localStorage.setItem("moves", JSON.stringify(this.vr.moves));
 469             localStorage.setItem("fen", this.vr.getFen());
 470         },
 471         updateStorage: function() {
 472             localStorage.setItem("moves", JSON.stringify(this.vr.moves));
 473             localStorage.setItem("fen", this.vr.getFen());
 474         },
 475         clearStorage: function() {
 476             delete localStorage["variant"];
 477             delete localStorage["myid"];
 478             delete localStorage["mycolor"];
 479             delete localStorage["oppid"];
 480             delete localStorage["fenStart"];
 481             delete localStorage["fen"];
 482             delete localStorage["moves"];
 483         },
 484         clickGameSeek: function() {
 485             if (this.mode == "human")
 486                 return; //no newgame while playing
 487             if (this.seek)
 488                 delete localStorage["newgame"]; //cancel game seek
 489             else
 490             {
 491                 localStorage["newgame"] = variant;
 492                 this.newGame("human");
 493             }
 494             this.seek = !this.seek;
 495         },
 496         clickComputerGame: function() {
 497             if (this.mode == "human")
 498                 return; //no newgame while playing
 499             this.newGame("computer");
 500         },
 501         newGame: function(mode, fenInit, color, oppId, moves, continuation) {
 502             const fen = fenInit || VariantRules.GenRandInitFen();
 503             console.log(fen); //DEBUG
 504             this.score = "*";
 505             if (mode=="human" && !oppId)
 506             {
 507                 const storageVariant = localStorage.getItem("variant");
 508                 if (!!storageVariant && storageVariant !== variant)
 509                 {
 510                     // TODO: find a better way to ensure this. Newgame system is currently a mess.
 511                     alert("Finish your " + storageVariant + " game first!");
 512                     return;
 513                 }
 514                 // Send game request and wait..
 515                 this.clearStorage(); //in case of
 516                 try {
 517                     this.conn.send(JSON.stringify({code:"newgame", fen:fen}));
 518                 } catch (INVALID_STATE_ERR) {
 519                     return; //nothing achieved
 520                 }
 521                 if (continuation !== "reconnect") //TODO: bad HACK...
 522                 {
 523                     let modalBox = document.getElementById("modal-newgame");
 524                     modalBox.checked = true;
 525                     setTimeout(() => { modalBox.checked = false; }, 2000);
 526                 }
 527                 return;
 528             }
 529             this.vr = new VariantRules(fen, moves || []);
 530             this.mode = mode;
 531             this.incheck = []; //in case of
 532             this.fenStart = continuation
 533                 ? localStorage.getItem("fenStart")
 534                 : fen.split(" ")[0]; //Only the position matters
 535             if (mode=="human")
 536             {
 537                 // Opponent found!
 538                 if (!continuation)
 539                 {
 540                     // Not playing sound on game continuation:
 541                     new Audio("/sounds/newgame.mp3").play().then(() => {}).catch(err => {});
 542                     document.getElementById("modal-newgame").checked = false;
 543                 }
 544                 this.oppid = oppId;
 545                 this.oppConnected = true;
 546                 this.mycolor = color;
 547                 this.seek = false;
 548                 if (!!moves && moves.length > 0) //imply continuation
 549                 {
 550                     const oppCol = this.vr.turn;
 551                     const lastMove = moves[moves.length-1];
 552                     this.vr.undo(lastMove, "ingame");
 553                     this.incheck = this.vr.getCheckSquares(lastMove, oppCol);
 554                     this.vr.play(lastMove, "ingame");
 555                 }
 556                 delete localStorage["newgame"];
 557                 this.setStorage(); //in case of interruptions
 558             }
 559             else //against computer
 560             {
 561                 this.mycolor = Math.random() < 0.5 ? 'w' : 'b';
 562                 if (this.mycolor == 'b')
 563                     setTimeout(this.playComputerMove, 500);
 564             }
 565         },
 566         playComputerMove: function() {
 567             const compColor = this.mycolor=='w' ? 'b' : 'w';
 568             const compMove = this.vr.getComputerMove(compColor);
 569             // HACK: avoid selecting elements before they appear on page:
 570             setTimeout(() => this.play(compMove, "animate"), 500);
 571         },
 572         // Get the identifier of a HTML table cell from its numeric coordinates o.x,o.y.
 573         getSquareId: function(o) {
 574             // NOTE: a separator is required to allow any size of board
 575             return  "sq-" + o.x + "-" + o.y;
 576         },
 577         // Inverse function
 578         getSquareFromId: function(id) {
 579             let idParts = id.split('-');
 580             return [parseInt(idParts[1]), parseInt(idParts[2])];
 581         },
 582         mousedown: function(e) {
 583             e = e || window.event;
 584             e.preventDefault(); //disable native drag & drop
 585             if (!this.selectedPiece && e.target.classList.contains("piece"))
 586             {
 587                 // Next few lines to center the piece on mouse cursor
 588                 let rect = e.target.parentNode.getBoundingClientRect();
 589                 this.start = {
 590                     x: rect.x + rect.width/2,
 591                     y: rect.y + rect.width/2,
 592                     id: e.target.parentNode.id
 593                 };
 594                 this.selectedPiece = e.target.cloneNode();
 595                 this.selectedPiece.style.position = "absolute";
 596                 this.selectedPiece.style.top = 0;
 597                 this.selectedPiece.style.display = "inline-block";
 598                 this.selectedPiece.style.zIndex = 3000;
 599                 let startSquare = this.getSquareFromId(e.target.parentNode.id);
 600                 this.possibleMoves = this.vr.canIplay(this.mycolor,startSquare)
 601                     ? this.vr.getPossibleMovesFrom(startSquare)
 602                     : [];
 603                 e.target.parentNode.appendChild(this.selectedPiece);
 604             }
 605         },
 606         mousemove: function(e) {
 607             if (!this.selectedPiece)
 608                 return;
 609             e = e || window.event;
 610             // If there is an active element, move it around
 611             if (!!this.selectedPiece)
 612             {
 613                 this.selectedPiece.style.left = (e.clientX-this.start.x) + "px";
 614                 this.selectedPiece.style.top = (e.clientY-this.start.y) + "px";
 615             }
 616         },
 617         mouseup: function(e) {
 618             if (!this.selectedPiece)
 619                 return;
 620             e = e || window.event;
 621             // Read drop target (or parentElement, parentNode... if type == "img")
 622             this.selectedPiece.style.zIndex = -3000; //HACK to find square from final coordinates
 623             let landing = document.elementFromPoint(e.clientX, e.clientY);
 624             this.selectedPiece.style.zIndex = 3000;
 625             while (landing.tagName == "IMG") //classList.contains(piece) fails because of mark/highlight
 626                 landing = landing.parentNode;
 627             if (this.start.id == landing.id) //a click: selectedPiece and possibleMoves already filled
 628                 return;
 629             // OK: process move attempt
 630             let endSquare = this.getSquareFromId(landing.id);
 631             let moves = this.findMatchingMoves(endSquare);
 632             this.possibleMoves = [];
 633             if (moves.length > 1)
 634                 this.choices = moves;
 635             else if (moves.length==1)
 636                 this.play(moves[0]);
 637             // Else: impossible move
 638             this.selectedPiece.parentNode.removeChild(this.selectedPiece);
 639             delete this.selectedPiece;
 640             this.selectedPiece = null;
 641         },
 642         findMatchingMoves: function(endSquare) {
 643             // Run through moves list and return the matching set (if promotions...)
 644             let moves = [];
 645             this.possibleMoves.forEach(function(m) {
 646                 if (endSquare[0] == m.end.x && endSquare[1] == m.end.y)
 647                     moves.push(m);
 648             });
 649             return moves;
 650         },
 651         animateMove: function(move) {
 652             let startSquare = document.getElementById(this.getSquareId(move.start));
 653             let endSquare = document.getElementById(this.getSquareId(move.end));
 654             let rectStart = startSquare.getBoundingClientRect();
 655             let rectEnd = endSquare.getBoundingClientRect();
 656             let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
 657             let movingPiece = document.querySelector("#" + this.getSquareId(move.start) + " > img.piece");
 658             // HACK for animation (otherwise with positive translate, image slides "under background"...)
 659             // Possible improvement: just alter squares on the piece's way...
 660             squares = document.getElementsByClassName("board");
 661             for (let i=0; i<squares.length; i++)
 662             {
 663                 let square = squares.item(i);
 664                 if (square.id != this.getSquareId(move.start))
 665                     square.style.zIndex = "-1";
 666             }
 667             movingPiece.style.transform = "translate(" + translation.x + "px," + translation.y + "px)";
 668             movingPiece.style.transitionDuration = "0.2s";
 669             movingPiece.style.zIndex = "3000";
 670             setTimeout( () => {
 671                 for (let i=0; i<squares.length; i++)
 672                     squares.item(i).style.zIndex = "auto";
 673                 movingPiece.style = {}; //required e.g. for 0-0 with KR swap
 674                 this.play(move);
 675             }, 200);
 676         },
 677         play: function(move, programmatic) {
 678             if (!!programmatic) //computer or human opponent
 679             {
 680                 this.animateMove(move);
 681                 return;
 682             }
 683             const oppCol = this.vr.getOppCol(this.vr.turn);
 684             this.incheck = this.vr.getCheckSquares(move, oppCol); //is opponent in check?
 685             // Not programmatic, or animation is over
 686             if (this.mode == "human" && this.vr.turn == this.mycolor)
 687                 this.conn.send(JSON.stringify({code:"newmove", move:move, oppid:this.oppid}));
 688             new Audio("/sounds/chessmove1.mp3").play().then(() => {}).catch(err => {});
 689             this.vr.play(move, "ingame");
 690             if (this.mode == "human")
 691                 this.updateStorage(); //after our moves and opponent moves
 692             const eog = this.vr.checkGameOver(this.vr.turn);
 693             if (eog != "*")
 694                 this.endGame(eog);
 695             else if (this.mode == "computer" && this.vr.turn != this.mycolor)
 696                 setTimeout(this.playComputerMove, 500);
 697         },
 698     },
 699 })