Fist draft of Antiking variant (still being debugged)
[vchess.git] / public / javascripts / components / game.js
CommitLineData
a29d9d6b 1// TODO: use indexedDB instead of localStorage? (more flexible: allow several games)
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2Vue.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
dfb4afc1 12 score: "*", //'*' means 'unfinished'
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13 mode: "idle", //human, computer or idle (when not playing)
14 oppid: "", //opponent ID in case of HH game
15 oppConnected: false,
186516b8 16 seek: false,
762b7c9c 17 fenStart: "",
4b5fe306 18 incheck: [],
3840e240 19 pgnTxt: "",
3ed62725 20 expert: document.cookie.length>0 ? document.cookie.substr(-1)=="1" : false,
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21 };
22 },
23 render(h) {
24 let [sizeX,sizeY] = VariantRules.size;
25 // Precompute hints squares to facilitate rendering
26 let hintSquares = doubleArray(sizeX, sizeY, false);
27 this.possibleMoves.forEach(m => { hintSquares[m.end.x][m.end.y] = true; });
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28 // Also precompute in-check squares
29 let incheckSq = doubleArray(sizeX, sizeY, false);
30 this.incheck.forEach(sq => { incheckSq[sq[0]][sq[1]] = true; });
1d184b4c 31 let elementArray = [];
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32 const playingHuman = (this.mode == "human");
33 const playingComp = (this.mode == "computer");
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34 let actionArray = [
35 h('button',
36 {
f3802fcd 37 on: { click: this.clickGameSeek },
1d184b4c 38 attrs: { "aria-label": 'New game VS human' },
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39 'class': {
40 "tooltip": true,
0706ea91 41 "bottom": true, //display below
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42 "seek": this.seek,
43 "playing": playingHuman,
44 },
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45 },
46 [h('i', { 'class': { "material-icons": true } }, "accessibility")]),
47 h('button',
48 {
f3802fcd 49 on: { click: this.clickComputerGame },
1d184b4c 50 attrs: { "aria-label": 'New game VS computer' },
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51 'class': {
52 "tooltip":true,
0706ea91 53 "bottom": true,
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54 "playing": playingComp,
55 },
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56 },
57 [h('i', { 'class': { "material-icons": true } }, "computer")])
58 ];
59 if (!!this.vr)
60 {
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61 const square00 = document.getElementById("sq-0-0");
62 const squareWidth = !!square00
63 ? parseFloat(window.getComputedStyle(square00).width.slice(0,-2))
64 : 0;
65 const indicWidth = (squareWidth>0 ? squareWidth/2 : 20);
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66 if (this.mode == "human")
67 {
68 let connectedIndic = h(
69 'div',
70 {
71 "class": {
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72 "topindicator": true,
73 "indic-left": true,
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74 "connected": this.oppConnected,
75 "disconnected": !this.oppConnected,
76 },
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77 style: {
78 "width": indicWidth + "px",
79 "height": indicWidth + "px",
80 },
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81 }
82 );
83 elementArray.push(connectedIndic);
84 }
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85 let turnIndic = h(
86 'div',
87 {
88 "class": {
89 "topindicator": true,
90 "indic-right": true,
91 "white-turn": this.vr.turn=="w",
92 "black-turn": this.vr.turn=="b",
93 },
94 style: {
95 "width": indicWidth + "px",
96 "height": indicWidth + "px",
97 },
98 }
99 );
100 elementArray.push(turnIndic);
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101 let expertSwitch = h(
102 'button',
103 {
104 on: { click: this.toggleExpertMode },
105 attrs: { "aria-label": 'Toggle expert mode' },
106 'class': {
107 "tooltip":true,
108 "topindicator": true,
109 "indic-right": true,
110 "expert-switch": true,
111 "expert-mode": this.expert,
112 },
113 },
114 [h('i', { 'class': { "material-icons": true } }, "remove_red_eye")]
115 );
116 elementArray.push(expertSwitch);
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117 let choices = h('div',
118 {
119 attrs: { "id": "choices" },
120 'class': { 'row': true },
121 style: {
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122 "display": this.choices.length>0?"block":"none",
123 "top": "-" + ((sizeY/2)*squareWidth+squareWidth/2) + "px",
124 "width": (this.choices.length * squareWidth) + "px",
125 "height": squareWidth + "px",
126 },
127 },
128 this.choices.map( m => { //a "choice" is a move
129 return h('div',
130 {
131 'class': { 'board': true },
132 style: {
133 'width': (100/this.choices.length) + "%",
134 'padding-bottom': (100/this.choices.length) + "%",
135 },
136 },
137 [h('img',
138 {
139 attrs: { "src": '/images/pieces/' + VariantRules.getPpath(m.appear[0].c+m.appear[0].p) + '.svg' },
140 'class': { 'choice-piece': true, 'board': true },
141 on: { "click": e => { this.play(m); this.choices=[]; } },
142 })
143 ]
144 );
145 })
146 );
147 // Create board element (+ reserves if needed by variant or mode)
148 let gameDiv = h('div',
149 {
150 'class': { 'game': true },
151 },
152 [_.range(sizeX).map(i => {
153 let ci = this.mycolor=='w' ? i : sizeX-i-1;
154 return h(
155 'div',
156 {
157 'class': {
158 'row': true,
159 },
160 style: { 'opacity': this.choices.length>0?"0.5":"1" },
161 },
162 _.range(sizeY).map(j => {
163 let cj = this.mycolor=='w' ? j : sizeY-j-1;
164 let elems = [];
165 if (this.vr.board[ci][cj] != VariantRules.EMPTY)
166 {
167 elems.push(
168 h(
169 'img',
170 {
171 'class': {
172 'piece': true,
173 'ghost': !!this.selectedPiece && this.selectedPiece.parentNode.id == "sq-"+ci+"-"+cj,
174 },
175 attrs: {
176 src: "/images/pieces/" + VariantRules.getPpath(this.vr.board[ci][cj]) + ".svg",
177 },
178 }
179 )
180 );
181 }
3ed62725 182 if (!this.expert && hintSquares[ci][cj])
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183 {
184 elems.push(
185 h(
186 'img',
187 {
188 'class': {
189 'mark-square': true,
190 },
191 attrs: {
192 src: "/images/mark.svg",
193 },
194 }
195 )
196 );
197 }
30ff6e04 198 const lm = this.vr.lastMove;
e64a4eff 199 const highlight = !!lm && _.isMatch(lm.end, {x:ci,y:cj});
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200 return h(
201 'div',
202 {
203 'class': {
204 'board': true,
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205 'light-square': (i+j)%2==0 && (this.expert || !highlight),
206 'dark-square': (i+j)%2==1 && (this.expert || !highlight),
207 'highlight': !this.expert && highlight,
208 'incheck': !this.expert && incheckSq[ci][cj],
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209 },
210 attrs: {
211 id: this.getSquareId({x:ci,y:cj}),
212 },
213 },
214 elems
215 );
216 })
217 );
218 }), choices]
219 );
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220 if (this.mode != "idle")
221 {
222 actionArray.push(
223 h('button',
224 {
225 on: { click: this.resign },
226 attrs: { "aria-label": 'Resign' },
227 'class': {
228 "tooltip":true,
229 "bottom": true,
230 },
0706ea91 231 },
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232 [h('i', { 'class': { "material-icons": true } }, "flag")])
233 );
234 }
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235 elementArray.push(gameDiv);
236 // if (!!vr.reserve)
237 // {
238 // let reserve = h('div',
239 // {'class':{'game':true}}, [
240 // h('div',
241 // { 'class': { 'row': true }},
242 // [
243 // h('div',
244 // {'class':{'board':true}},
245 // [h('img',{'class':{"piece":true},attrs:{"src":"/images/pieces/wb.svg"}})]
246 // )
247 // ]
248 // )
249 // ],
250 // );
251 // elementArray.push(reserve);
252 // }
f3802fcd 253 const eogMessage = this.getEndgameMessage(this.score);
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254 const modalEog = [
255 h('input',
256 {
ecf44502 257 attrs: { "id": "modal-eog", type: "checkbox" },
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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 },
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269 [
270 h('label',
271 {
272 attrs: { "for": "modal-eog" },
273 "class": { "modal-close": true },
274 }
275 ),
276 h('h3',
277 {
278 "class": { "section": true },
279 domProps: { innerHTML: eogMessage },
280 }
281 )
282 ]
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283 )
284 ]
285 )
286 ];
287 elementArray = elementArray.concat(modalEog);
288 }
289 const modalNewgame = [
290 h('input',
291 {
ecf44502 292 attrs: { "id": "modal-newgame", type: "checkbox" },
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293 "class": { "modal": true },
294 }),
295 h('div',
296 {
297 attrs: { "role": "dialog", "aria-labelledby": "dialog-title" },
298 },
299 [
300 h('div',
301 {
302 "class": { "card": true, "smallpad": true },
303 },
304 [
305 h('label',
306 {
ecf44502 307 attrs: { "id": "close-newgame", "for": "modal-newgame" },
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308 "class": { "modal-close": true },
309 }
310 ),
311 h('h3',
312 {
313 "class": { "section": true },
314 domProps: { innerHTML: "New game" },
315 }
316 ),
317 h('p',
318 {
319 "class": { "section": true },
320 domProps: { innerHTML: "Waiting for opponent..." },
321 }
322 )
323 ]
324 )
325 ]
326 )
327 ];
328 elementArray = elementArray.concat(modalNewgame);
329 const actions = h('div',
330 {
331 attrs: { "id": "actions" },
332 'class': { 'text-center': true },
333 },
334 actionArray
335 );
336 elementArray.push(actions);
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337 if (this.score != "*")
338 {
339 elementArray.push(
340 h('div',
01ca2adc 341 { attrs: { id: "pgn-div" } },
01a135e2 342 [
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343 h('a',
344 {
345 attrs: {
346 id: "download",
347 href: "#",
348 }
349 }
350 ),
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351 h('p',
352 {
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353 attrs: { id: "pgn-game" },
354 on: { click: this.download },
01a135e2 355 domProps: {
3840e240 356 innerHTML: this.pgnTxt
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357 }
358 }
359 )
360 ]
361 )
362 );
363 }
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364 return h(
365 'div',
366 {
367 'class': {
368 "col-sm-12":true,
369 "col-md-8":true,
370 "col-md-offset-2":true,
371 "col-lg-6":true,
372 "col-lg-offset-3":true,
373 },
374 // NOTE: click = mousedown + mouseup --> what about smartphone?!
375 on: {
376 mousedown: this.mousedown,
377 mousemove: this.mousemove,
378 mouseup: this.mouseup,
379 touchdown: this.mousedown,
380 touchmove: this.mousemove,
381 touchup: this.mouseup,
382 },
383 },
384 elementArray
385 );
386 },
387 created: function() {
388 const url = socketUrl;
389 const continuation = (localStorage.getItem("variant") === variant);
390 this.myid = continuation
391 ? localStorage.getItem("myid")
392 // random enough (TODO: function)
393 : (Date.now().toString(36) + Math.random().toString(36).substr(2, 7)).toUpperCase();
394 this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
d35f20e4 395 const socketOpenListener = () => {
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396 if (continuation)
397 {
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398 const fen = localStorage.getItem("fen");
399 const mycolor = localStorage.getItem("mycolor");
400 const oppid = localStorage.getItem("oppid");
401 const moves = JSON.parse(localStorage.getItem("moves"));
402 this.newGame("human", fen, mycolor, oppid, moves, true);
a29d9d6b 403 // Send ping to server (answer pong if opponent is connected)
ecf44502 404 this.conn.send(JSON.stringify({code:"ping",oppid:this.oppid}));
1d184b4c 405 }
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406 else if (localStorage.getItem("newgame") === variant)
407 {
408 // New game request has been cancelled on disconnect
186516b8 409 this.seek = true;
001344b9 410 this.newGame("human", undefined, undefined, undefined, undefined, "reconnect");
30ff6e04 411 }
1d184b4c 412 };
d35f20e4 413 const socketMessageListener = msg => {
1d184b4c 414 const data = JSON.parse(msg.data);
f3802fcd 415 console.log("Receive message: " + data.code);
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416 switch (data.code)
417 {
418 case "newgame": //opponent found
419 this.newGame("human", data.fen, data.color, data.oppid); //oppid: opponent socket ID
420 break;
421 case "newmove": //..he played!
422 this.play(data.move, "animate");
423 break;
f3802fcd 424 case "pong": //received if we sent a ping (game still alive on our side)
1d184b4c 425 this.oppConnected = true;
a29d9d6b 426 const L = this.vr.moves.length;
f3802fcd 427 // Send our "last state" informations to opponent
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428 this.conn.send(JSON.stringify({
429 code:"lastate",
f3802fcd 430 oppid:this.oppid,
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431 lastMove:L>0?this.vr.moves[L-1]:undefined,
432 movesCount:L,
433 }));
1d184b4c 434 break;
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435 case "lastate": //got opponent infos about last move (we might have resigned)
436 if (this.mode!="human" || this.oppid!=data.oppid)
437 {
438 // OK, we resigned
439 this.conn.send(JSON.stringify({
440 code:"lastate",
f3802fcd 441 oppid:this.oppid,
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442 lastMove:undefined,
443 movesCount:-1,
444 }));
445 }
446 else if (data.movesCount < 0)
447 {
448 // OK, he resigned
449 this.endGame(this.mycolor=="w"?"1-0":"0-1");
450 }
451 else if (data.movesCount < this.vr.moves.length)
452 {
453 // We must tell last move to opponent
454 const L = this.vr.moves.length;
455 this.conn.send(JSON.stringify({
456 code:"lastate",
f3802fcd 457 oppid:this.oppid,
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458 lastMove:this.vr.moves[L-1],
459 movesCount:L,
460 }));
461 }
462 else if (data.movesCount > this.vr.moves.length) //just got last move from him
463 this.play(data.lastMove, "animate");
ecf44502 464 break;
1d184b4c 465 case "resign": //..you won!
dfb4afc1 466 this.endGame(this.mycolor=="w"?"1-0":"0-1");
1d184b4c 467 break;
f3802fcd 468 // TODO: also use (dis)connect info to count online players?
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469 case "connect":
470 case "disconnect":
471 if (this.mode == "human" && this.oppid == data.id)
472 this.oppConnected = (data.code == "connect");
473 break;
474 }
475 };
d35f20e4 476 const socketCloseListener = () => {
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477 this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
478 this.conn.addEventListener('open', socketOpenListener);
479 this.conn.addEventListener('message', socketMessageListener);
480 this.conn.addEventListener('close', socketCloseListener);
481 };
482 this.conn.onopen = socketOpenListener;
483 this.conn.onmessage = socketMessageListener;
484 this.conn.onclose = socketCloseListener;
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485 },
486 methods: {
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487 download: function() {
488 let content = document.getElementById("pgn-game").innerHTML;
489 content = content.replace(/<br>/g, "\n");
490 // Prepare and trigger download link
491 let downloadAnchor = document.getElementById("download");
492 downloadAnchor.setAttribute("download", "game.pgn");
493 downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
494 downloadAnchor.click();
495 },
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496 endGame: function(score) {
497 this.score = score;
ecf44502 498 let modalBox = document.getElementById("modal-eog");
186516b8 499 modalBox.checked = true;
204e289b 500 // Variants may have special PGN structure (so next function isn't defined here)
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501 this.pgnTxt = this.vr.getPGN(this.mycolor, this.score, this.fenStart, this.mode);
502 setTimeout(() => { modalBox.checked = false; }, 2000);
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503 if (this.mode == "human")
504 this.clearStorage();
3840e240 505 this.mode = "idle";
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506 this.oppid = "";
507 },
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508 getEndgameMessage: function(score) {
509 let eogMessage = "Unfinished";
510 switch (this.score)
511 {
512 case "1-0":
513 eogMessage = "White win";
514 break;
515 case "0-1":
516 eogMessage = "Black win";
517 break;
518 case "1/2":
519 eogMessage = "Draw";
520 break;
521 }
522 return eogMessage;
523 },
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524 toggleExpertMode: function() {
525 this.expert = !this.expert;
526 document.cookie = "expert=" + (this.expert ? "1" : "0");
527 },
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528 resign: function() {
529 if (this.mode == "human" && this.oppConnected)
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530 {
531 try {
532 this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
533 } catch (INVALID_STATE_ERR) {
a29d9d6b 534 return; //socket is not ready (and not yet reconnected)
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535 }
536 }
dfb4afc1 537 this.endGame(this.mycolor=="w"?"0-1":"1-0");
1d184b4c 538 },
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539 setStorage: function() {
540 localStorage.setItem("myid", this.myid);
541 localStorage.setItem("variant", variant);
542 localStorage.setItem("mycolor", this.mycolor);
543 localStorage.setItem("oppid", this.oppid);
544 localStorage.setItem("fenStart", this.fenStart);
545 localStorage.setItem("moves", JSON.stringify(this.vr.moves));
1d184b4c 546 localStorage.setItem("fen", this.vr.getFen());
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547 },
548 updateStorage: function() {
dfb4afc1 549 localStorage.setItem("moves", JSON.stringify(this.vr.moves));
762b7c9c 550 localStorage.setItem("fen", this.vr.getFen());
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551 },
552 clearStorage: function() {
553 delete localStorage["variant"];
554 delete localStorage["myid"];
555 delete localStorage["mycolor"];
556 delete localStorage["oppid"];
762b7c9c 557 delete localStorage["fenStart"];
1d184b4c 558 delete localStorage["fen"];
dfb4afc1 559 delete localStorage["moves"];
1d184b4c 560 },
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561 clickGameSeek: function() {
562 if (this.mode == "human")
563 return; //no newgame while playing
564 if (this.seek)
01a135e2 565 {
f3802fcd 566 delete localStorage["newgame"]; //cancel game seek
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567 this.seek = false;
568 }
f3802fcd 569 else
f3802fcd 570 this.newGame("human");
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571 },
572 clickComputerGame: function() {
573 if (this.mode == "human")
574 return; //no newgame while playing
575 this.newGame("computer");
576 },
dfb4afc1 577 newGame: function(mode, fenInit, color, oppId, moves, continuation) {
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578 const fen = fenInit || VariantRules.GenRandInitFen();
579 console.log(fen); //DEBUG
dfb4afc1 580 this.score = "*";
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581 if (mode=="human" && !oppId)
582 {
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583 const storageVariant = localStorage.getItem("variant");
584 if (!!storageVariant && storageVariant !== variant)
585 {
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586 alert("Finish your " + storageVariant + " game first!");
587 return;
588 }
1d184b4c 589 // Send game request and wait..
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590 localStorage["newgame"] = variant;
591 this.seek = true;
1d184b4c 592 this.clearStorage(); //in case of
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593 try {
594 this.conn.send(JSON.stringify({code:"newgame", fen:fen}));
595 } catch (INVALID_STATE_ERR) {
596 return; //nothing achieved
597 }
f3802fcd 598 if (continuation !== "reconnect") //TODO: bad HACK...
a68d899d 599 {
ecf44502 600 let modalBox = document.getElementById("modal-newgame");
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601 modalBox.checked = true;
602 setTimeout(() => { modalBox.checked = false; }, 2000);
603 }
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604 return;
605 }
dfb4afc1 606 this.vr = new VariantRules(fen, moves || []);
3840e240 607 this.pgnTxt = ""; //redundant with this.score = "*", but cleaner
1d184b4c 608 this.mode = mode;
1fcaa356 609 this.incheck = []; //in case of
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610 this.fenStart = continuation
611 ? localStorage.getItem("fenStart")
612 : fen.split(" ")[0]; //Only the position matters
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613 if (mode=="human")
614 {
615 // Opponent found!
616 if (!continuation)
617 {
ecf44502 618 // Not playing sound on game continuation:
ea8417ff 619 new Audio("/sounds/newgame.mp3").play().then(() => {}).catch(err => {});
ecf44502 620 document.getElementById("modal-newgame").checked = false;
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621 }
622 this.oppid = oppId;
623 this.oppConnected = true;
624 this.mycolor = color;
186516b8 625 this.seek = false;
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626 if (!!moves && moves.length > 0) //imply continuation
627 {
e64a4eff 628 const lastMove = moves[moves.length-1];
cd4cad04 629 this.vr.undo(lastMove);
46302e64 630 this.incheck = this.vr.getCheckSquares(lastMove);
e64a4eff
BA
631 this.vr.play(lastMove, "ingame");
632 }
186516b8 633 delete localStorage["newgame"];
762b7c9c 634 this.setStorage(); //in case of interruptions
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635 }
636 else //against computer
637 {
638 this.mycolor = Math.random() < 0.5 ? 'w' : 'b';
639 if (this.mycolor == 'b')
640 setTimeout(this.playComputerMove, 500);
641 }
642 },
643 playComputerMove: function() {
46302e64 644 const compMove = this.vr.getComputerMove();
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645 // HACK: avoid selecting elements before they appear on page:
646 setTimeout(() => this.play(compMove, "animate"), 500);
647 },
648 // Get the identifier of a HTML table cell from its numeric coordinates o.x,o.y.
649 getSquareId: function(o) {
650 // NOTE: a separator is required to allow any size of board
651 return "sq-" + o.x + "-" + o.y;
652 },
653 // Inverse function
654 getSquareFromId: function(id) {
655 let idParts = id.split('-');
656 return [parseInt(idParts[1]), parseInt(idParts[2])];
657 },
658 mousedown: function(e) {
659 e = e || window.event;
660 e.preventDefault(); //disable native drag & drop
661 if (!this.selectedPiece && e.target.classList.contains("piece"))
662 {
663 // Next few lines to center the piece on mouse cursor
664 let rect = e.target.parentNode.getBoundingClientRect();
665 this.start = {
666 x: rect.x + rect.width/2,
667 y: rect.y + rect.width/2,
668 id: e.target.parentNode.id
669 };
670 this.selectedPiece = e.target.cloneNode();
671 this.selectedPiece.style.position = "absolute";
672 this.selectedPiece.style.top = 0;
673 this.selectedPiece.style.display = "inline-block";
674 this.selectedPiece.style.zIndex = 3000;
675 let startSquare = this.getSquareFromId(e.target.parentNode.id);
7d6b0773 676 this.possibleMoves = this.mode!="idle" && this.vr.canIplay(this.mycolor,startSquare)
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677 ? this.vr.getPossibleMovesFrom(startSquare)
678 : [];
679 e.target.parentNode.appendChild(this.selectedPiece);
680 }
681 },
682 mousemove: function(e) {
683 if (!this.selectedPiece)
684 return;
685 e = e || window.event;
686 // If there is an active element, move it around
687 if (!!this.selectedPiece)
688 {
689 this.selectedPiece.style.left = (e.clientX-this.start.x) + "px";
690 this.selectedPiece.style.top = (e.clientY-this.start.y) + "px";
691 }
692 },
693 mouseup: function(e) {
694 if (!this.selectedPiece)
695 return;
696 e = e || window.event;
697 // Read drop target (or parentElement, parentNode... if type == "img")
698 this.selectedPiece.style.zIndex = -3000; //HACK to find square from final coordinates
699 let landing = document.elementFromPoint(e.clientX, e.clientY);
700 this.selectedPiece.style.zIndex = 3000;
701 while (landing.tagName == "IMG") //classList.contains(piece) fails because of mark/highlight
702 landing = landing.parentNode;
703 if (this.start.id == landing.id) //a click: selectedPiece and possibleMoves already filled
704 return;
705 // OK: process move attempt
706 let endSquare = this.getSquareFromId(landing.id);
707 let moves = this.findMatchingMoves(endSquare);
708 this.possibleMoves = [];
709 if (moves.length > 1)
710 this.choices = moves;
711 else if (moves.length==1)
712 this.play(moves[0]);
713 // Else: impossible move
714 this.selectedPiece.parentNode.removeChild(this.selectedPiece);
715 delete this.selectedPiece;
716 this.selectedPiece = null;
717 },
718 findMatchingMoves: function(endSquare) {
719 // Run through moves list and return the matching set (if promotions...)
720 let moves = [];
721 this.possibleMoves.forEach(function(m) {
722 if (endSquare[0] == m.end.x && endSquare[1] == m.end.y)
723 moves.push(m);
724 });
725 return moves;
726 },
727 animateMove: function(move) {
728 let startSquare = document.getElementById(this.getSquareId(move.start));
729 let endSquare = document.getElementById(this.getSquareId(move.end));
730 let rectStart = startSquare.getBoundingClientRect();
731 let rectEnd = endSquare.getBoundingClientRect();
732 let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
733 let movingPiece = document.querySelector("#" + this.getSquareId(move.start) + " > img.piece");
734 // HACK for animation (otherwise with positive translate, image slides "under background"...)
735 // Possible improvement: just alter squares on the piece's way...
736 squares = document.getElementsByClassName("board");
737 for (let i=0; i<squares.length; i++)
738 {
739 let square = squares.item(i);
740 if (square.id != this.getSquareId(move.start))
741 square.style.zIndex = "-1";
742 }
743 movingPiece.style.transform = "translate(" + translation.x + "px," + translation.y + "px)";
744 movingPiece.style.transitionDuration = "0.2s";
745 movingPiece.style.zIndex = "3000";
746 setTimeout( () => {
747 for (let i=0; i<squares.length; i++)
748 squares.item(i).style.zIndex = "auto";
749 movingPiece.style = {}; //required e.g. for 0-0 with KR swap
750 this.play(move);
751 }, 200);
752 },
753 play: function(move, programmatic) {
754 if (!!programmatic) //computer or human opponent
755 {
756 this.animateMove(move);
757 return;
758 }
46302e64 759 this.incheck = this.vr.getCheckSquares(move); //is opponent in check?
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760 // Not programmatic, or animation is over
761 if (this.mode == "human" && this.vr.turn == this.mycolor)
a29d9d6b 762 this.conn.send(JSON.stringify({code:"newmove", move:move, oppid:this.oppid}));
ea8417ff 763 new Audio("/sounds/chessmove1.mp3").play().then(() => {}).catch(err => {});
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764 this.vr.play(move, "ingame");
765 if (this.mode == "human")
766 this.updateStorage(); //after our moves and opponent moves
46302e64 767 const eog = this.vr.checkGameOver();
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768 if (eog != "*")
769 this.endGame(eog);
770 else if (this.mode == "computer" && this.vr.turn != this.mycolor)
771 setTimeout(this.playComputerMove, 500);
772 },
773 },
774})