User-friendly vchess presentation on index + some code cleaning
[vchess.git] / public / javascripts / components / game.js
CommitLineData
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1Vue.component('my-game', {
2 data: function() {
3 return {
4 vr: null, //object to check moves, store them, FEN..
5 mycolor: "w",
6 possibleMoves: [], //filled after each valid click/dragstart
7 choices: [], //promotion pieces, or checkered captures... (contain possible pieces)
8 start: {}, //pixels coordinates + id of starting square (click or drag)
9 selectedPiece: null, //moving piece (or clicked piece)
10 conn: null, //socket messages
dfb4afc1 11 score: "*", //'*' means 'unfinished'
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12 mode: "idle", //human, computer or idle (when not playing)
13 oppid: "", //opponent ID in case of HH game
14 oppConnected: false,
186516b8 15 seek: false,
762b7c9c 16 fenStart: "",
4b5fe306 17 incheck: [],
3840e240 18 pgnTxt: "",
b019d603 19 expert: getCookie("expert") === "1" ? true : false,
efb20746 20 gameId: "", //used to limit computer moves' time
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21 };
22 },
23 render(h) {
c94bc812 24 const [sizeX,sizeY] = VariantRules.size;
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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 {
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131 'class': {
132 'board': true,
8a196305 133 ['board'+sizeY]: true,
c94bc812 134 },
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135 style: {
136 'width': (100/this.choices.length) + "%",
137 'padding-bottom': (100/this.choices.length) + "%",
138 },
139 },
140 [h('img',
141 {
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142 attrs: { "src": '/images/pieces/' +
143 VariantRules.getPpath(m.appear[0].c+m.appear[0].p) + '.svg' },
c94bc812 144 'class': { 'choice-piece': true },
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145 on: { "click": e => { this.play(m); this.choices=[]; } },
146 })
147 ]
148 );
149 })
150 );
151 // Create board element (+ reserves if needed by variant or mode)
152 let gameDiv = h('div',
153 {
154 'class': { 'game': true },
155 },
156 [_.range(sizeX).map(i => {
157 let ci = this.mycolor=='w' ? i : sizeX-i-1;
158 return h(
159 'div',
160 {
161 'class': {
162 'row': true,
163 },
164 style: { 'opacity': this.choices.length>0?"0.5":"1" },
165 },
166 _.range(sizeY).map(j => {
167 let cj = this.mycolor=='w' ? j : sizeY-j-1;
168 let elems = [];
169 if (this.vr.board[ci][cj] != VariantRules.EMPTY)
170 {
171 elems.push(
172 h(
173 'img',
174 {
175 'class': {
176 'piece': true,
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177 'ghost': !!this.selectedPiece
178 && this.selectedPiece.parentNode.id == "sq-"+ci+"-"+cj,
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179 },
180 attrs: {
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181 src: "/images/pieces/" +
182 VariantRules.getPpath(this.vr.board[ci][cj]) + ".svg",
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183 },
184 }
185 )
186 );
187 }
3ed62725 188 if (!this.expert && hintSquares[ci][cj])
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189 {
190 elems.push(
191 h(
192 'img',
193 {
194 'class': {
195 'mark-square': true,
196 },
197 attrs: {
198 src: "/images/mark.svg",
199 },
200 }
201 )
202 );
203 }
30ff6e04 204 const lm = this.vr.lastMove;
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205 const showLight = !this.expert &&
206 (this.mode!="idle" || this.cursor==this.vr.moves.length);
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207 return h(
208 'div',
209 {
210 'class': {
211 'board': true,
8a196305 212 ['board'+sizeY]: true,
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213 'light-square': (i+j)%2==0,
214 'dark-square': (i+j)%2==1,
215 'highlight': showLight && !!lm && _.isMatch(lm.end, {x:ci,y:cj}),
216 'incheck': showLight && incheckSq[ci][cj],
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217 },
218 attrs: {
219 id: this.getSquareId({x:ci,y:cj}),
220 },
221 },
222 elems
223 );
224 })
225 );
226 }), choices]
227 );
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228 if (this.mode != "idle")
229 {
230 actionArray.push(
231 h('button',
232 {
233 on: { click: this.resign },
234 attrs: { "aria-label": 'Resign' },
235 'class': {
236 "tooltip":true,
237 "bottom": true,
238 },
0706ea91 239 },
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240 [h('i', { 'class': { "material-icons": true } }, "flag")])
241 );
242 }
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243 else if (this.vr.moves.length > 0)
244 {
245 // A game finished, and another is not started yet: allow navigation
246 actionArray = actionArray.concat([
247 h('button',
248 {
249 style: { "margin-left": "30px" },
250 on: { click: e => this.undo() },
251 attrs: { "aria-label": 'Undo' },
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252 },
253 [h('i', { 'class': { "material-icons": true } }, "fast_rewind")]),
254 h('button',
255 {
256 on: { click: e => this.play() },
257 attrs: { "aria-label": 'Play' },
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258 },
259 [h('i', { 'class': { "material-icons": true } }, "fast_forward")]),
260 ]
261 );
262 }
1d184b4c 263 elementArray.push(gameDiv);
5c42c64e 264 if (!!this.vr.reserve)
1221ac47 265 {
6752407b 266 const shiftIdx = (this.mycolor=="w" ? 0 : 1);
5c42c64e 267 let myReservePiecesArray = [];
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268 for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
269 {
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270 myReservePiecesArray.push(h('div',
271 {
272 'class': {'board':true, ['board'+sizeY]:true},
6752407b 273 attrs: { id: this.getSquareId({x:sizeX+shiftIdx,y:i}) }
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274 },
275 [
276 h('img',
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277 {
278 'class': {"piece":true},
279 attrs: {
280 "src": "/images/pieces/" +
281 this.vr.getReservePpath(this.mycolor,i) + ".svg",
1221ac47 282 }
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283 }),
284 h('sup',
285 {style: { "padding-left":"40%"} },
286 [ this.vr.reserve[this.mycolor][VariantRules.RESERVE_PIECES[i]] ]
287 )
288 ]));
289 }
290 let oppReservePiecesArray = [];
291 const oppCol = this.vr.getOppCol(this.mycolor);
292 for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
293 {
294 oppReservePiecesArray.push(h('div',
295 {
296 'class': {'board':true, ['board'+sizeY]:true},
6752407b 297 attrs: { id: this.getSquareId({x:sizeX+(1-shiftIdx),y:i}) }
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298 },
299 [
300 h('img',
301 {
302 'class': {"piece":true},
303 attrs: {
304 "src": "/images/pieces/" +
305 this.vr.getReservePpath(oppCol,i) + ".svg",
306 }
307 }),
308 h('sup',
309 {style: { "padding-left":"40%"} },
310 [ this.vr.reserve[oppCol][VariantRules.RESERVE_PIECES[i]] ]
311 )
312 ]));
1221ac47 313 }
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314 let reserves = h('div',
315 {
316 'class':{'game':true},
317 style: {"margin-bottom": "20px"},
318 },
319 [
320 h('div',
321 {
322 'class': { 'row': true },
323 style: {"margin-bottom": "15px"},
324 },
325 myReservePiecesArray
326 ),
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327 h('div',
328 { 'class': { 'row': true }},
5c42c64e 329 oppReservePiecesArray
1221ac47 330 )
5c42c64e 331 ]
1221ac47 332 );
5c42c64e 333 elementArray.push(reserves);
1221ac47 334 }
f3802fcd 335 const eogMessage = this.getEndgameMessage(this.score);
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336 const modalEog = [
337 h('input',
338 {
ecf44502 339 attrs: { "id": "modal-eog", type: "checkbox" },
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340 "class": { "modal": true },
341 }),
342 h('div',
343 {
c148615e 344 attrs: { "role": "dialog", "aria-labelledby": "modal-eog" },
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345 },
346 [
347 h('div',
348 {
349 "class": { "card": true, "smallpad": true },
350 },
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351 [
352 h('label',
353 {
354 attrs: { "for": "modal-eog" },
355 "class": { "modal-close": true },
356 }
357 ),
358 h('h3',
359 {
360 "class": { "section": true },
361 domProps: { innerHTML: eogMessage },
362 }
363 )
364 ]
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365 )
366 ]
367 )
368 ];
369 elementArray = elementArray.concat(modalEog);
370 }
371 const modalNewgame = [
372 h('input',
373 {
ecf44502 374 attrs: { "id": "modal-newgame", type: "checkbox" },
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375 "class": { "modal": true },
376 }),
377 h('div',
378 {
c148615e 379 attrs: { "role": "dialog", "aria-labelledby": "modal-newgame" },
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380 },
381 [
382 h('div',
383 {
384 "class": { "card": true, "smallpad": true },
385 },
386 [
387 h('label',
388 {
ecf44502 389 attrs: { "id": "close-newgame", "for": "modal-newgame" },
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390 "class": { "modal-close": true },
391 }
392 ),
393 h('h3',
394 {
395 "class": { "section": true },
396 domProps: { innerHTML: "New game" },
397 }
398 ),
399 h('p',
400 {
401 "class": { "section": true },
402 domProps: { innerHTML: "Waiting for opponent..." },
403 }
404 )
405 ]
406 )
407 ]
408 )
409 ];
410 elementArray = elementArray.concat(modalNewgame);
411 const actions = h('div',
412 {
413 attrs: { "id": "actions" },
414 'class': { 'text-center': true },
415 },
416 actionArray
417 );
418 elementArray.push(actions);
01a135e2
BA
419 if (this.score != "*")
420 {
421 elementArray.push(
422 h('div',
01ca2adc 423 { attrs: { id: "pgn-div" } },
01a135e2 424 [
01ca2adc
BA
425 h('a',
426 {
427 attrs: {
428 id: "download",
429 href: "#",
430 }
431 }
432 ),
01a135e2
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433 h('p',
434 {
01ca2adc
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435 attrs: { id: "pgn-game" },
436 on: { click: this.download },
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437 domProps: { innerHTML: this.pgnTxt }
438 }
439 )
440 ]
441 )
442 );
443 }
444 else if (this.mode != "idle")
445 {
446 // Show current FEN (at least for debug)
447 elementArray.push(
448 h('div',
449 { attrs: { id: "fen-div" } },
450 [
451 h('p',
452 {
453 attrs: { id: "fen-string" },
454 domProps: { innerHTML: this.vr.getBaseFen() }
01a135e2
BA
455 }
456 )
457 ]
458 )
459 );
460 }
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461 return h(
462 'div',
463 {
464 'class': {
465 "col-sm-12":true,
466 "col-md-8":true,
467 "col-md-offset-2":true,
468 "col-lg-6":true,
469 "col-lg-offset-3":true,
470 },
dda21a71 471 // NOTE: click = mousedown + mouseup
1d184b4c
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472 on: {
473 mousedown: this.mousedown,
474 mousemove: this.mousemove,
475 mouseup: this.mouseup,
ffea77d9
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476 touchstart: this.mousedown,
477 touchmove: this.mousemove,
478 touchend: this.mouseup,
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479 },
480 },
481 elementArray
482 );
483 },
484 created: function() {
485 const url = socketUrl;
486 const continuation = (localStorage.getItem("variant") === variant);
b019d603 487 this.myid = continuation ? localStorage.getItem("myid") : getRandString();
92ff5bae
BA
488 if (!continuation)
489 {
490 // HACK: play a small silent sound to allow "new game" sound later if tab not focused
491 new Audio("/sounds/silent.mp3").play().then(() => {}).catch(err => {});
492 }
1d184b4c 493 this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
d35f20e4 494 const socketOpenListener = () => {
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495 if (continuation)
496 {
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497 const fen = localStorage.getItem("fen");
498 const mycolor = localStorage.getItem("mycolor");
499 const oppid = localStorage.getItem("oppid");
500 const moves = JSON.parse(localStorage.getItem("moves"));
501 this.newGame("human", fen, mycolor, oppid, moves, true);
a29d9d6b 502 // Send ping to server (answer pong if opponent is connected)
ecf44502 503 this.conn.send(JSON.stringify({code:"ping",oppid:this.oppid}));
1d184b4c 504 }
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505 else if (localStorage.getItem("newgame") === variant)
506 {
507 // New game request has been cancelled on disconnect
001344b9 508 this.newGame("human", undefined, undefined, undefined, undefined, "reconnect");
30ff6e04 509 }
1d184b4c 510 };
d35f20e4 511 const socketMessageListener = msg => {
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512 const data = JSON.parse(msg.data);
513 switch (data.code)
514 {
515 case "newgame": //opponent found
516 this.newGame("human", data.fen, data.color, data.oppid); //oppid: opponent socket ID
517 break;
518 case "newmove": //..he played!
519 this.play(data.move, "animate");
520 break;
f3802fcd 521 case "pong": //received if we sent a ping (game still alive on our side)
1d184b4c 522 this.oppConnected = true;
a29d9d6b 523 const L = this.vr.moves.length;
f3802fcd 524 // Send our "last state" informations to opponent
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BA
525 this.conn.send(JSON.stringify({
526 code:"lastate",
f3802fcd 527 oppid:this.oppid,
a29d9d6b
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528 lastMove:L>0?this.vr.moves[L-1]:undefined,
529 movesCount:L,
530 }));
1d184b4c 531 break;
a29d9d6b
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532 case "lastate": //got opponent infos about last move (we might have resigned)
533 if (this.mode!="human" || this.oppid!=data.oppid)
534 {
535 // OK, we resigned
536 this.conn.send(JSON.stringify({
537 code:"lastate",
f3802fcd 538 oppid:this.oppid,
a29d9d6b
BA
539 lastMove:undefined,
540 movesCount:-1,
541 }));
542 }
543 else if (data.movesCount < 0)
544 {
545 // OK, he resigned
546 this.endGame(this.mycolor=="w"?"1-0":"0-1");
547 }
548 else if (data.movesCount < this.vr.moves.length)
549 {
550 // We must tell last move to opponent
551 const L = this.vr.moves.length;
552 this.conn.send(JSON.stringify({
553 code:"lastate",
f3802fcd 554 oppid:this.oppid,
a29d9d6b
BA
555 lastMove:this.vr.moves[L-1],
556 movesCount:L,
557 }));
558 }
559 else if (data.movesCount > this.vr.moves.length) //just got last move from him
560 this.play(data.lastMove, "animate");
ecf44502 561 break;
1d184b4c 562 case "resign": //..you won!
dfb4afc1 563 this.endGame(this.mycolor=="w"?"1-0":"0-1");
1d184b4c 564 break;
f3802fcd 565 // TODO: also use (dis)connect info to count online players?
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566 case "connect":
567 case "disconnect":
568 if (this.mode == "human" && this.oppid == data.id)
569 this.oppConnected = (data.code == "connect");
570 break;
571 }
572 };
d35f20e4 573 const socketCloseListener = () => {
d35f20e4
BA
574 this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
575 this.conn.addEventListener('open', socketOpenListener);
576 this.conn.addEventListener('message', socketMessageListener);
577 this.conn.addEventListener('close', socketCloseListener);
578 };
579 this.conn.onopen = socketOpenListener;
580 this.conn.onmessage = socketMessageListener;
581 this.conn.onclose = socketCloseListener;
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582 // Listen to keyboard left/right to navigate in game
583 document.onkeydown = event => {
584 if (this.mode == "idle" && this.vr.moves.length > 0
585 && [37,39].includes(event.keyCode))
586 {
587 event.preventDefault();
588 if (event.keyCode == 37) //Back
589 this.undo();
590 else //Forward (39)
591 this.play();
592 }
593 };
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594 },
595 methods: {
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596 download: function() {
597 let content = document.getElementById("pgn-game").innerHTML;
598 content = content.replace(/<br>/g, "\n");
599 // Prepare and trigger download link
600 let downloadAnchor = document.getElementById("download");
601 downloadAnchor.setAttribute("download", "game.pgn");
602 downloadAnchor.href = "data:text/plain;charset=utf-8," + encodeURIComponent(content);
603 downloadAnchor.click();
604 },
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605 endGame: function(score) {
606 this.score = score;
ecf44502 607 let modalBox = document.getElementById("modal-eog");
186516b8 608 modalBox.checked = true;
204e289b 609 // Variants may have special PGN structure (so next function isn't defined here)
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610 this.pgnTxt = this.vr.getPGN(this.mycolor, this.score, this.fenStart, this.mode);
611 setTimeout(() => { modalBox.checked = false; }, 2000);
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BA
612 if (this.mode == "human")
613 this.clearStorage();
3840e240 614 this.mode = "idle";
e64084da 615 this.cursor = this.vr.moves.length; //to navigate in finished game
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616 this.oppid = "";
617 },
f3802fcd
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618 getEndgameMessage: function(score) {
619 let eogMessage = "Unfinished";
620 switch (this.score)
621 {
622 case "1-0":
623 eogMessage = "White win";
624 break;
625 case "0-1":
626 eogMessage = "Black win";
627 break;
628 case "1/2":
629 eogMessage = "Draw";
630 break;
631 }
632 return eogMessage;
633 },
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634 setStorage: function() {
635 localStorage.setItem("myid", this.myid);
636 localStorage.setItem("variant", variant);
637 localStorage.setItem("mycolor", this.mycolor);
638 localStorage.setItem("oppid", this.oppid);
639 localStorage.setItem("fenStart", this.fenStart);
640 localStorage.setItem("moves", JSON.stringify(this.vr.moves));
1d184b4c 641 localStorage.setItem("fen", this.vr.getFen());
762b7c9c
BA
642 },
643 updateStorage: function() {
dfb4afc1 644 localStorage.setItem("moves", JSON.stringify(this.vr.moves));
762b7c9c 645 localStorage.setItem("fen", this.vr.getFen());
1d184b4c
BA
646 },
647 clearStorage: function() {
648 delete localStorage["variant"];
649 delete localStorage["myid"];
650 delete localStorage["mycolor"];
651 delete localStorage["oppid"];
762b7c9c 652 delete localStorage["fenStart"];
1d184b4c 653 delete localStorage["fen"];
dfb4afc1 654 delete localStorage["moves"];
1d184b4c 655 },
c148615e
BA
656 // HACK because mini-css tooltips are persistent after click...
657 getRidOfTooltip: function(elt) {
658 elt.style.visibility = "hidden";
659 setTimeout(() => { elt.style.visibility="visible"; }, 100);
660 },
661 clickGameSeek: function(e) {
662 this.getRidOfTooltip(e.currentTarget);
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663 if (this.mode == "human")
664 return; //no newgame while playing
665 if (this.seek)
01a135e2 666 {
283d06a4 667 this.conn.send(JSON.stringify({code:"cancelnewgame"}));
f3802fcd 668 delete localStorage["newgame"]; //cancel game seek
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669 this.seek = false;
670 }
f3802fcd 671 else
f3802fcd 672 this.newGame("human");
f3802fcd 673 },
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674 clickComputerGame: function(e) {
675 this.getRidOfTooltip(e.currentTarget);
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676 if (this.mode == "human")
677 return; //no newgame while playing
678 this.newGame("computer");
679 },
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680 toggleExpertMode: function(e) {
681 this.getRidOfTooltip(e.currentTarget);
682 this.expert = !this.expert;
b019d603 683 setCookie("expert", this.expert ? "1" : "0");
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684 },
685 resign: function() {
686 if (this.mode == "human" && this.oppConnected)
687 {
688 try {
689 this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
690 } catch (INVALID_STATE_ERR) {
691 return; //socket is not ready (and not yet reconnected)
692 }
693 }
694 this.endGame(this.mycolor=="w"?"0-1":"1-0");
695 },
dfb4afc1 696 newGame: function(mode, fenInit, color, oppId, moves, continuation) {
55eb331d 697 const fen = fenInit || VariantRules.GenRandInitFen();
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698 console.log(fen); //DEBUG
699 if (mode=="human" && !oppId)
700 {
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701 const storageVariant = localStorage.getItem("variant");
702 if (!!storageVariant && storageVariant !== variant)
703 {
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704 alert("Finish your " + storageVariant + " game first!");
705 return;
706 }
1d184b4c 707 // Send game request and wait..
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708 localStorage["newgame"] = variant;
709 this.seek = true;
1d184b4c 710 this.clearStorage(); //in case of
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711 try {
712 this.conn.send(JSON.stringify({code:"newgame", fen:fen}));
713 } catch (INVALID_STATE_ERR) {
714 return; //nothing achieved
715 }
f3802fcd 716 if (continuation !== "reconnect") //TODO: bad HACK...
a68d899d 717 {
ecf44502 718 let modalBox = document.getElementById("modal-newgame");
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719 modalBox.checked = true;
720 setTimeout(() => { modalBox.checked = false; }, 2000);
721 }
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722 return;
723 }
b019d603 724 this.gameId = getRandString();
dfb4afc1 725 this.vr = new VariantRules(fen, moves || []);
c148615e 726 this.score = "*";
3840e240 727 this.pgnTxt = ""; //redundant with this.score = "*", but cleaner
1d184b4c 728 this.mode = mode;
1fcaa356 729 this.incheck = []; //in case of
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730 this.fenStart = continuation
731 ? localStorage.getItem("fenStart")
732 : fen.split(" ")[0]; //Only the position matters
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733 if (mode=="human")
734 {
735 // Opponent found!
736 if (!continuation)
737 {
ecf44502 738 // Not playing sound on game continuation:
ea8417ff 739 new Audio("/sounds/newgame.mp3").play().then(() => {}).catch(err => {});
ecf44502 740 document.getElementById("modal-newgame").checked = false;
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741 }
742 this.oppid = oppId;
743 this.oppConnected = true;
744 this.mycolor = color;
186516b8 745 this.seek = false;
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746 if (!!moves && moves.length > 0) //imply continuation
747 {
e64a4eff 748 const lastMove = moves[moves.length-1];
cd4cad04 749 this.vr.undo(lastMove);
46302e64 750 this.incheck = this.vr.getCheckSquares(lastMove);
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751 this.vr.play(lastMove, "ingame");
752 }
186516b8 753 delete localStorage["newgame"];
762b7c9c 754 this.setStorage(); //in case of interruptions
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755 }
756 else //against computer
757 {
f3c10e18 758 this.mycolor = Math.random() < 0.5 ? 'w' : 'b';
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759 if (this.mycolor == 'b')
760 setTimeout(this.playComputerMove, 500);
761 }
762 },
763 playComputerMove: function() {
4b353936 764 const timeStart = Date.now();
3c09dc49 765 const nbMoves = this.vr.moves.length; //using played moves to know if search finished
efb20746 766 const gameId = this.gameId; //to know if game was reset before timer end
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767 setTimeout(
768 () => {
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769 if (gameId != this.gameId)
770 return; //game stopped
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771 const L = this.vr.moves.length;
772 if (nbMoves == L || !this.vr.moves[L-1].notation) //move search didn't finish
773 this.vr.shouldReturn = true;
774 }, 5000);
46302e64 775 const compMove = this.vr.getComputerMove();
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776 // (first move) HACK: avoid selecting elements before they appear on page:
777 const delay = Math.max(500-(Date.now()-timeStart), 0);
778 setTimeout(() => this.play(compMove, "animate"), delay);
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779 },
780 // Get the identifier of a HTML table cell from its numeric coordinates o.x,o.y.
781 getSquareId: function(o) {
782 // NOTE: a separator is required to allow any size of board
783 return "sq-" + o.x + "-" + o.y;
784 },
785 // Inverse function
786 getSquareFromId: function(id) {
787 let idParts = id.split('-');
788 return [parseInt(idParts[1]), parseInt(idParts[2])];
789 },
790 mousedown: function(e) {
791 e = e || window.event;
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792 let ingame = false;
793 let elem = e.target;
794 while (!ingame && elem !== null)
795 {
796 if (elem.classList.contains("game"))
797 {
798 ingame = true;
799 break;
800 }
801 elem = elem.parentElement;
802 }
803 if (!ingame) //let default behavior (click on button...)
804 return;
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805 e.preventDefault(); //disable native drag & drop
806 if (!this.selectedPiece && e.target.classList.contains("piece"))
807 {
808 // Next few lines to center the piece on mouse cursor
809 let rect = e.target.parentNode.getBoundingClientRect();
810 this.start = {
811 x: rect.x + rect.width/2,
812 y: rect.y + rect.width/2,
813 id: e.target.parentNode.id
814 };
815 this.selectedPiece = e.target.cloneNode();
816 this.selectedPiece.style.position = "absolute";
817 this.selectedPiece.style.top = 0;
818 this.selectedPiece.style.display = "inline-block";
819 this.selectedPiece.style.zIndex = 3000;
820 let startSquare = this.getSquareFromId(e.target.parentNode.id);
55eb331d 821 this.possibleMoves = this.mode!="idle" && this.vr.canIplay(this.mycolor,startSquare)
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822 ? this.vr.getPossibleMovesFrom(startSquare)
823 : [];
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824 // Next line add moving piece just after current image (required for Crazyhouse reserve)
825 e.target.parentNode.insertBefore(this.selectedPiece, e.target.nextSibling);
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826 }
827 },
828 mousemove: function(e) {
829 if (!this.selectedPiece)
830 return;
831 e = e || window.event;
832 // If there is an active element, move it around
833 if (!!this.selectedPiece)
834 {
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835 const [offsetX,offsetY] = !!e.clientX
836 ? [e.clientX,e.clientY] //desktop browser
837 : [e.changedTouches[0].pageX, e.changedTouches[0].pageY]; //smartphone
838 this.selectedPiece.style.left = (offsetX-this.start.x) + "px";
839 this.selectedPiece.style.top = (offsetY-this.start.y) + "px";
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840 }
841 },
842 mouseup: function(e) {
843 if (!this.selectedPiece)
844 return;
845 e = e || window.event;
846 // Read drop target (or parentElement, parentNode... if type == "img")
847 this.selectedPiece.style.zIndex = -3000; //HACK to find square from final coordinates
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848 const [offsetX,offsetY] = !!e.clientX
849 ? [e.clientX,e.clientY]
850 : [e.changedTouches[0].pageX, e.changedTouches[0].pageY];
851 let landing = document.elementFromPoint(offsetX, offsetY);
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852 this.selectedPiece.style.zIndex = 3000;
853 while (landing.tagName == "IMG") //classList.contains(piece) fails because of mark/highlight
854 landing = landing.parentNode;
855 if (this.start.id == landing.id) //a click: selectedPiece and possibleMoves already filled
856 return;
857 // OK: process move attempt
858 let endSquare = this.getSquareFromId(landing.id);
859 let moves = this.findMatchingMoves(endSquare);
860 this.possibleMoves = [];
861 if (moves.length > 1)
862 this.choices = moves;
863 else if (moves.length==1)
864 this.play(moves[0]);
865 // Else: impossible move
866 this.selectedPiece.parentNode.removeChild(this.selectedPiece);
867 delete this.selectedPiece;
868 this.selectedPiece = null;
869 },
870 findMatchingMoves: function(endSquare) {
871 // Run through moves list and return the matching set (if promotions...)
872 let moves = [];
873 this.possibleMoves.forEach(function(m) {
874 if (endSquare[0] == m.end.x && endSquare[1] == m.end.y)
875 moves.push(m);
876 });
877 return moves;
878 },
879 animateMove: function(move) {
880 let startSquare = document.getElementById(this.getSquareId(move.start));
881 let endSquare = document.getElementById(this.getSquareId(move.end));
882 let rectStart = startSquare.getBoundingClientRect();
883 let rectEnd = endSquare.getBoundingClientRect();
884 let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
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885 let movingPiece =
886 document.querySelector("#" + this.getSquareId(move.start) + " > img.piece");
887 // HACK for animation (with positive translate, image slides "under background"...)
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888 // Possible improvement: just alter squares on the piece's way...
889 squares = document.getElementsByClassName("board");
890 for (let i=0; i<squares.length; i++)
891 {
892 let square = squares.item(i);
893 if (square.id != this.getSquareId(move.start))
894 square.style.zIndex = "-1";
895 }
896 movingPiece.style.transform = "translate(" + translation.x + "px," + translation.y + "px)";
897 movingPiece.style.transitionDuration = "0.2s";
898 movingPiece.style.zIndex = "3000";
899 setTimeout( () => {
900 for (let i=0; i<squares.length; i++)
901 squares.item(i).style.zIndex = "auto";
902 movingPiece.style = {}; //required e.g. for 0-0 with KR swap
903 this.play(move);
904 }, 200);
905 },
906 play: function(move, programmatic) {
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907 if (!move)
908 {
909 // Navigate after game is over
910 if (this.cursor >= this.vr.moves.length)
911 return; //already at the end
912 move = this.vr.moves[this.cursor++];
913 }
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914 if (!!programmatic) //computer or human opponent
915 {
916 this.animateMove(move);
917 return;
918 }
919 // Not programmatic, or animation is over
920 if (this.mode == "human" && this.vr.turn == this.mycolor)
a29d9d6b 921 this.conn.send(JSON.stringify({code:"newmove", move:move, oppid:this.oppid}));
ea8417ff 922 new Audio("/sounds/chessmove1.mp3").play().then(() => {}).catch(err => {});
e64084da 923 if (this.mode != "idle")
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924 {
925 this.incheck = this.vr.getCheckSquares(move); //is opponent in check?
e64084da 926 this.vr.play(move, "ingame");
3300df38 927 }
e64084da 928 else
3300df38 929 {
e64084da 930 VariantRules.PlayOnBoard(this.vr.board, move);
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931 this.$forceUpdate(); //TODO: ?!
932 }
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933 if (this.mode == "human")
934 this.updateStorage(); //after our moves and opponent moves
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935 if (this.mode != "idle")
936 {
937 const eog = this.vr.checkGameOver();
938 if (eog != "*")
939 this.endGame(eog);
940 }
941 if (this.mode == "computer" && this.vr.turn != this.mycolor)
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942 setTimeout(this.playComputerMove, 500);
943 },
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944 undo: function() {
945 // Navigate after game is over
946 if (this.cursor == 0)
947 return; //already at the beginning
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948 if (this.cursor == this.vr.moves.length)
949 this.incheck = []; //in case of...
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950 const move = this.vr.moves[--this.cursor];
951 VariantRules.UndoOnBoard(this.vr.board, move);
952 this.$forceUpdate(); //TODO: ?!
953 }
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954 },
955})