Add true repetition detection
[vchess.git] / public / javascripts / components / game.js
CommitLineData
92342261 1// Game logic on a variant page
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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
92342261 8 choices: [], //promotion pieces, or checkered captures... (as moves)
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9 start: {}, //pixels coordinates + id of starting square (click or drag)
10 selectedPiece: null, //moving piece (or clicked piece)
92342261 11 conn: null, //socket connection
dfb4afc1 12 score: "*", //'*' means 'unfinished'
2748531f 13 mode: "idle", //human, friend, computer or idle (when not playing)
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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: "",
88af03d2 20 hints: (getCookie("hints") === "1" ? true : false),
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21 color: getCookie("color", "lichess"), //lichess, chesscom or chesstempo
22 // sound level: 0 = no sound, 1 = sound only on newgame, 2 = always
8b7aead3 23 sound: parseInt(getCookie("sound", "2")),
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24 };
25 },
26 render(h) {
c94bc812 27 const [sizeX,sizeY] = VariantRules.size;
0bf75837 28 const smallScreen = (screen.width <= 420);
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29 // Precompute hints squares to facilitate rendering
30 let hintSquares = doubleArray(sizeX, sizeY, false);
31 this.possibleMoves.forEach(m => { hintSquares[m.end.x][m.end.y] = true; });
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32 // Also precompute in-check squares
33 let incheckSq = doubleArray(sizeX, sizeY, false);
34 this.incheck.forEach(sq => { incheckSq[sq[0]][sq[1]] = true; });
1d184b4c 35 let elementArray = [];
2748531f 36 let actionArray = [];
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37 actionArray.push(
38 h('button',
39 {
40 on: { click: this.clickGameSeek },
41 attrs: { "aria-label": 'New online game' },
42 'class': {
43 "tooltip": true,
44 "bottom": true, //display below
45 "seek": this.seek,
46 "playing": this.mode == "human",
b8a0ec4a 47 "small": smallScreen,
1d184b4c 48 },
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49 },
50 [h('i', { 'class': { "material-icons": true } }, "accessibility")])
51 );
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52 if (["idle","computer"].includes(this.mode))
53 {
54 actionArray.push(
55 h('button',
1d184b4c 56 {
f3802fcd 57 on: { click: this.clickComputerGame },
1d184b4c 58 attrs: { "aria-label": 'New game VS computer' },
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59 'class': {
60 "tooltip":true,
0706ea91 61 "bottom": true,
2748531f 62 "playing": this.mode == "computer",
b8a0ec4a 63 "small": smallScreen,
186516b8 64 },
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65 },
66 [h('i', { 'class': { "material-icons": true } }, "computer")])
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67 );
68 }
69 if (["idle","friend"].includes(this.mode))
70 {
71 actionArray.push(
72 h('button',
73 {
74 on: { click: this.clickFriendGame },
75 attrs: { "aria-label": 'New IRL game' },
76 'class': {
77 "tooltip":true,
78 "bottom": true,
79 "playing": this.mode == "friend",
b8a0ec4a 80 "small": smallScreen,
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81 },
82 },
83 [h('i', { 'class': { "material-icons": true } }, "people")])
84 );
85 }
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86 if (!!this.vr)
87 {
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88 const square00 = document.getElementById("sq-0-0");
89 const squareWidth = !!square00
90 ? parseFloat(window.getComputedStyle(square00).width.slice(0,-2))
91 : 0;
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92 const settingsBtnElt = document.getElementById("settingsBtn");
93 const indicWidth = !!settingsBtnElt //-2 for border:
94 ? parseFloat(window.getComputedStyle(settingsBtnElt).height.slice(0,-2)) - 2
05290bf9 95 : (smallScreen ? 31 : 37);
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96 if (this.mode == "human")
97 {
98 let connectedIndic = h(
99 'div',
100 {
101 "class": {
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102 "topindicator": true,
103 "indic-left": true,
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104 "connected": this.oppConnected,
105 "disconnected": !this.oppConnected,
106 },
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107 style: {
108 "width": indicWidth + "px",
109 "height": indicWidth + "px",
110 },
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111 }
112 );
113 elementArray.push(connectedIndic);
114 }
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115 let turnIndic = h(
116 'div',
117 {
118 "class": {
119 "topindicator": true,
120 "indic-right": true,
121 "white-turn": this.vr.turn=="w",
122 "black-turn": this.vr.turn=="b",
123 },
124 style: {
125 "width": indicWidth + "px",
126 "height": indicWidth + "px",
127 },
128 }
129 );
130 elementArray.push(turnIndic);
88af03d2 131 let settingsBtn = h(
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132 'button',
133 {
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134 on: { click: this.showSettings },
135 attrs: {
136 "aria-label": 'Settings',
137 "id": "settingsBtn",
138 },
3ed62725 139 'class': {
88af03d2 140 "tooltip": true,
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141 "topindicator": true,
142 "indic-right": true,
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143 "settings-btn": !smallScreen,
144 "settings-btn-small": smallScreen,
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145 },
146 },
88af03d2 147 [h('i', { 'class': { "material-icons": true } }, "settings")]
3ed62725 148 );
88af03d2 149 elementArray.push(settingsBtn);
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150 let choices = h('div',
151 {
152 attrs: { "id": "choices" },
153 'class': { 'row': true },
154 style: {
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155 "display": this.choices.length>0?"block":"none",
156 "top": "-" + ((sizeY/2)*squareWidth+squareWidth/2) + "px",
157 "width": (this.choices.length * squareWidth) + "px",
158 "height": squareWidth + "px",
159 },
160 },
161 this.choices.map( m => { //a "choice" is a move
162 return h('div',
163 {
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164 'class': {
165 'board': true,
8a196305 166 ['board'+sizeY]: true,
c94bc812 167 },
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168 style: {
169 'width': (100/this.choices.length) + "%",
170 'padding-bottom': (100/this.choices.length) + "%",
171 },
172 },
173 [h('img',
174 {
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175 attrs: { "src": '/images/pieces/' +
176 VariantRules.getPpath(m.appear[0].c+m.appear[0].p) + '.svg' },
c94bc812 177 'class': { 'choice-piece': true },
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178 on: { "click": e => { this.play(m); this.choices=[]; } },
179 })
180 ]
181 );
182 })
183 );
184 // Create board element (+ reserves if needed by variant or mode)
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185 const lm = this.vr.lastMove;
186 const showLight = this.hints &&
187 (this.mode!="idle" || this.cursor==this.vr.moves.length);
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188 let gameDiv = h('div',
189 {
190 'class': { 'game': true },
191 },
192 [_.range(sizeX).map(i => {
193 let ci = this.mycolor=='w' ? i : sizeX-i-1;
194 return h(
195 'div',
196 {
197 'class': {
198 'row': true,
199 },
200 style: { 'opacity': this.choices.length>0?"0.5":"1" },
201 },
202 _.range(sizeY).map(j => {
203 let cj = this.mycolor=='w' ? j : sizeY-j-1;
204 let elems = [];
205 if (this.vr.board[ci][cj] != VariantRules.EMPTY)
206 {
207 elems.push(
208 h(
209 'img',
210 {
211 'class': {
212 'piece': true,
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213 'ghost': !!this.selectedPiece
214 && this.selectedPiece.parentNode.id == "sq-"+ci+"-"+cj,
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215 },
216 attrs: {
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217 src: "/images/pieces/" +
218 VariantRules.getPpath(this.vr.board[ci][cj]) + ".svg",
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219 },
220 }
221 )
222 );
223 }
88af03d2 224 if (this.hints && hintSquares[ci][cj])
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225 {
226 elems.push(
227 h(
228 'img',
229 {
230 'class': {
231 'mark-square': true,
232 },
233 attrs: {
234 src: "/images/mark.svg",
235 },
236 }
237 )
238 );
239 }
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240 return h(
241 'div',
242 {
243 'class': {
244 'board': true,
8a196305 245 ['board'+sizeY]: true,
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246 'light-square': (i+j)%2==0,
247 'dark-square': (i+j)%2==1,
a897b421 248 [this.color]: true,
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249 'highlight': showLight && !!lm && _.isMatch(lm.end, {x:ci,y:cj}),
250 'incheck': showLight && incheckSq[ci][cj],
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251 },
252 attrs: {
253 id: this.getSquareId({x:ci,y:cj}),
254 },
255 },
256 elems
257 );
258 })
259 );
260 }), choices]
261 );
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262 if (this.mode != "idle")
263 {
264 actionArray.push(
265 h('button',
266 {
267 on: { click: this.resign },
268 attrs: { "aria-label": 'Resign' },
269 'class': {
270 "tooltip":true,
271 "bottom": true,
b8a0ec4a 272 "small": smallScreen,
204e289b 273 },
0706ea91 274 },
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275 [h('i', { 'class': { "material-icons": true } }, "flag")])
276 );
277 }
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278 else if (this.vr.moves.length > 0)
279 {
280 // A game finished, and another is not started yet: allow navigation
281 actionArray = actionArray.concat([
282 h('button',
283 {
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284 on: { click: e => this.undo() },
285 attrs: { "aria-label": 'Undo' },
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286 "class": {
287 "small": smallScreen,
288 "marginleft": true,
289 },
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290 },
291 [h('i', { 'class': { "material-icons": true } }, "fast_rewind")]),
292 h('button',
293 {
294 on: { click: e => this.play() },
295 attrs: { "aria-label": 'Play' },
b8a0ec4a 296 "class": { "small": smallScreen },
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297 },
298 [h('i', { 'class': { "material-icons": true } }, "fast_forward")]),
299 ]
300 );
301 }
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302 if (this.mode == "friend")
303 {
304 actionArray = actionArray.concat(
305 [
306 h('button',
307 {
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308 on: { click: this.undoInGame },
309 attrs: { "aria-label": 'Undo' },
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310 "class": {
311 "small": smallScreen,
312 "marginleft": true,
313 },
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314 },
315 [h('i', { 'class': { "material-icons": true } }, "undo")]
316 ),
317 h('button',
318 {
319 on: { click: () => { this.mycolor = this.vr.getOppCol(this.mycolor) } },
320 attrs: { "aria-label": 'Flip' },
b8a0ec4a 321 "class": { "small": smallScreen },
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322 },
323 [h('i', { 'class': { "material-icons": true } }, "cached")]
324 ),
325 ]);
326 }
1d184b4c 327 elementArray.push(gameDiv);
5c42c64e 328 if (!!this.vr.reserve)
1221ac47 329 {
6752407b 330 const shiftIdx = (this.mycolor=="w" ? 0 : 1);
5c42c64e 331 let myReservePiecesArray = [];
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332 for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
333 {
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334 myReservePiecesArray.push(h('div',
335 {
336 'class': {'board':true, ['board'+sizeY]:true},
6752407b 337 attrs: { id: this.getSquareId({x:sizeX+shiftIdx,y:i}) }
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338 },
339 [
340 h('img',
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341 {
342 'class': {"piece":true},
343 attrs: {
344 "src": "/images/pieces/" +
345 this.vr.getReservePpath(this.mycolor,i) + ".svg",
1221ac47 346 }
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347 }),
348 h('sup',
92342261 349 {"class": { "reserve-count": true } },
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350 [ this.vr.reserve[this.mycolor][VariantRules.RESERVE_PIECES[i]] ]
351 )
352 ]));
353 }
354 let oppReservePiecesArray = [];
355 const oppCol = this.vr.getOppCol(this.mycolor);
356 for (let i=0; i<VariantRules.RESERVE_PIECES.length; i++)
357 {
358 oppReservePiecesArray.push(h('div',
359 {
360 'class': {'board':true, ['board'+sizeY]:true},
6752407b 361 attrs: { id: this.getSquareId({x:sizeX+(1-shiftIdx),y:i}) }
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362 },
363 [
364 h('img',
365 {
366 'class': {"piece":true},
367 attrs: {
368 "src": "/images/pieces/" +
369 this.vr.getReservePpath(oppCol,i) + ".svg",
370 }
371 }),
372 h('sup',
92342261 373 {"class": { "reserve-count": true } },
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374 [ this.vr.reserve[oppCol][VariantRules.RESERVE_PIECES[i]] ]
375 )
376 ]));
1221ac47 377 }
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378 let reserves = h('div',
379 {
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380 'class':{
381 'game': true,
382 "reserve-div": true,
383 },
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384 },
385 [
386 h('div',
387 {
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388 'class': {
389 'row': true,
390 "reserve-row-1": true,
391 },
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392 },
393 myReservePiecesArray
394 ),
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395 h('div',
396 { 'class': { 'row': true }},
5c42c64e 397 oppReservePiecesArray
1221ac47 398 )
5c42c64e 399 ]
1221ac47 400 );
5c42c64e 401 elementArray.push(reserves);
1221ac47 402 }
f3802fcd 403 const eogMessage = this.getEndgameMessage(this.score);
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404 const modalEog = [
405 h('input',
406 {
ecf44502 407 attrs: { "id": "modal-eog", type: "checkbox" },
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408 "class": { "modal": true },
409 }),
410 h('div',
411 {
c148615e 412 attrs: { "role": "dialog", "aria-labelledby": "modal-eog" },
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413 },
414 [
415 h('div',
416 {
417 "class": { "card": true, "smallpad": true },
418 },
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419 [
420 h('label',
421 {
422 attrs: { "for": "modal-eog" },
423 "class": { "modal-close": true },
424 }
425 ),
426 h('h3',
427 {
428 "class": { "section": true },
429 domProps: { innerHTML: eogMessage },
430 }
431 )
432 ]
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433 )
434 ]
435 )
436 ];
437 elementArray = elementArray.concat(modalEog);
438 }
12b46d8f 439 // NOTE: this modal could be in Pug view (no usage of Vue functions or variables)
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440 const modalNewgame = [
441 h('input',
442 {
ecf44502 443 attrs: { "id": "modal-newgame", type: "checkbox" },
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444 "class": { "modal": true },
445 }),
446 h('div',
447 {
c148615e 448 attrs: { "role": "dialog", "aria-labelledby": "modal-newgame" },
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449 },
450 [
451 h('div',
452 {
453 "class": { "card": true, "smallpad": true },
454 },
455 [
456 h('label',
457 {
ecf44502 458 attrs: { "id": "close-newgame", "for": "modal-newgame" },
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459 "class": { "modal-close": true },
460 }
461 ),
462 h('h3',
463 {
464 "class": { "section": true },
465 domProps: { innerHTML: "New game" },
466 }
467 ),
468 h('p',
469 {
470 "class": { "section": true },
471 domProps: { innerHTML: "Waiting for opponent..." },
472 }
473 )
474 ]
475 )
476 ]
477 )
478 ];
479 elementArray = elementArray.concat(modalNewgame);
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480 const modalFenEdit = [
481 h('input',
482 {
483 attrs: { "id": "modal-fenedit", type: "checkbox" },
484 "class": { "modal": true },
485 }),
486 h('div',
487 {
488 attrs: { "role": "dialog", "aria-labelledby": "modal-fenedit" },
489 },
490 [
491 h('div',
492 {
493 "class": { "card": true, "smallpad": true },
494 },
495 [
496 h('label',
497 {
498 attrs: { "id": "close-fenedit", "for": "modal-fenedit" },
499 "class": { "modal-close": true },
500 }
501 ),
502 h('h3',
503 {
504 "class": { "section": true },
505 domProps: { innerHTML: "Position + flags (FEN):" },
506 }
507 ),
508 h('input',
509 {
510 attrs: {
511 "id": "input-fen",
512 type: "text",
513 value: VariantRules.GenRandInitFen(),
514 },
515 }
516 ),
517 h('button',
518 {
519 on: { click:
520 () => {
521 const fen = document.getElementById("input-fen").value;
522 document.getElementById("modal-fenedit").checked = false;
523 this.newGame("friend", fen);
524 }
525 },
526 domProps: { innerHTML: "Ok" },
527 }
528 ),
529 h('button',
530 {
531 on: { click:
532 () => {
533 document.getElementById("input-fen").value =
534 VariantRules.GenRandInitFen();
535 }
536 },
537 domProps: { innerHTML: "Random" },
538 }
539 ),
540 ]
541 )
542 ]
543 )
544 ];
545 elementArray = elementArray.concat(modalFenEdit);
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546 const modalSettings = [
547 h('input',
548 {
549 attrs: { "id": "modal-settings", type: "checkbox" },
550 "class": { "modal": true },
551 }),
552 h('div',
553 {
554 attrs: { "role": "dialog", "aria-labelledby": "modal-settings" },
555 },
556 [
557 h('div',
558 {
559 "class": { "card": true, "smallpad": true },
560 },
561 [
562 h('label',
563 {
564 attrs: { "id": "close-settings", "for": "modal-settings" },
565 "class": { "modal-close": true },
566 }
567 ),
568 h('h3',
569 {
570 "class": { "section": true },
a897b421 571 domProps: { innerHTML: "Preferences" },
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572 }
573 ),
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574 h('fieldset',
575 { },
576 [
2812515a 577 //h('legend', { domProps: { innerHTML: "Legend title" } }),
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578 h('label',
579 {
2812515a 580 attrs: { for: "setHints" },
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581 domProps: { innerHTML: "Show hints?" },
582 },
583 ),
584 h('input',
585 {
586 attrs: {
587 "id": "setHints",
588 type: "checkbox",
589 checked: this.hints,
590 },
591 on: { "change": this.toggleHints },
592 }
593 ),
594 ]
a897b421 595 ),
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596 h('fieldset',
597 { },
598 [
599 h('label',
600 {
2812515a 601 attrs: { for: "selectColor" },
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602 domProps: { innerHTML: "Board colors" },
603 },
604 ),
605 h("select",
606 {
607 attrs: { "id": "selectColor" },
608 on: { "change": this.setColor },
609 },
610 [
611 h("option",
612 {
613 domProps: {
614 "value": "lichess",
2812515a 615 innerHTML: "brown"
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616 },
617 attrs: { "selected": this.color=="lichess" },
618 }
619 ),
620 h("option",
621 {
622 domProps: {
623 "value": "chesscom",
2812515a 624 innerHTML: "green"
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625 },
626 attrs: { "selected": this.color=="chesscom" },
627 }
628 ),
629 h("option",
630 {
631 domProps: {
632 "value": "chesstempo",
2812515a 633 innerHTML: "blue"
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634 },
635 attrs: { "selected": this.color=="chesstempo" },
636 }
637 ),
638 ],
639 ),
640 ]
641 ),
642 h('fieldset',
643 { },
644 [
645 h('label',
646 {
2812515a 647 attrs: { for: "selectSound" },
130db3ef 648 domProps: { innerHTML: "Play sounds?" },
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649 },
650 ),
651 h("select",
652 {
653 attrs: { "id": "selectSound" },
654 on: { "change": this.setSound },
655 },
656 [
657 h("option",
658 {
659 domProps: {
660 "value": "0",
130db3ef 661 innerHTML: "None"
12b46d8f 662 },
73cbe9de 663 attrs: { "selected": this.sound==0 },
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664 }
665 ),
666 h("option",
667 {
668 domProps: {
669 "value": "1",
130db3ef 670 innerHTML: "Newgame"
12b46d8f 671 },
73cbe9de 672 attrs: { "selected": this.sound==1 },
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673 }
674 ),
675 h("option",
676 {
677 domProps: {
678 "value": "2",
130db3ef 679 innerHTML: "All"
12b46d8f 680 },
73cbe9de 681 attrs: { "selected": this.sound==2 },
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682 }
683 ),
684 ],
685 ),
686 ]
a897b421 687 ),
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688 ]
689 )
690 ]
691 )
692 ];
693 elementArray = elementArray.concat(modalSettings);
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694 const actions = h('div',
695 {
696 attrs: { "id": "actions" },
697 'class': { 'text-center': true },
698 },
699 actionArray
700 );
701 elementArray.push(actions);
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702 if (this.score != "*")
703 {
704 elementArray.push(
705 h('div',
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706 {
707 attrs: { id: "pgn-div" },
708 "class": { "section-content": true },
709 },
01a135e2 710 [
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711 h('a',
712 {
713 attrs: {
714 id: "download",
715 href: "#",
716 }
717 }
718 ),
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719 h('p',
720 {
01ca2adc 721 attrs: { id: "pgn-game" },
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722 domProps: { innerHTML: this.pgnTxt }
723 }
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724 ),
725 h('button',
726 {
727 attrs: { "id": "downloadBtn" },
728 on: { click: this.download },
729 domProps: { innerHTML: "Download game" },
730 }
731 ),
85be503d
BA
732 ]
733 )
734 );
735 }
736 else if (this.mode != "idle")
737 {
2748531f 738 // Show current FEN
85be503d
BA
739 elementArray.push(
740 h('div',
61a262b2
BA
741 {
742 attrs: { id: "fen-div" },
743 "class": { "section-content": true },
744 },
85be503d
BA
745 [
746 h('p',
747 {
748 attrs: { id: "fen-string" },
2748531f 749 domProps: { innerHTML: this.vr.getFen() }
01a135e2
BA
750 }
751 )
752 ]
753 )
754 );
755 }
1d184b4c
BA
756 return h(
757 'div',
758 {
759 'class': {
760 "col-sm-12":true,
761 "col-md-8":true,
762 "col-md-offset-2":true,
763 "col-lg-6":true,
764 "col-lg-offset-3":true,
765 },
dda21a71 766 // NOTE: click = mousedown + mouseup
1d184b4c
BA
767 on: {
768 mousedown: this.mousedown,
769 mousemove: this.mousemove,
770 mouseup: this.mouseup,
ffea77d9
BA
771 touchstart: this.mousedown,
772 touchmove: this.mousemove,
773 touchend: this.mouseup,
1d184b4c
BA
774 },
775 },
776 elementArray
777 );
778 },
779 created: function() {
780 const url = socketUrl;
781 const continuation = (localStorage.getItem("variant") === variant);
b019d603 782 this.myid = continuation ? localStorage.getItem("myid") : getRandString();
92ff5bae
BA
783 if (!continuation)
784 {
92342261
BA
785 // HACK: play a small silent sound to allow "new game" sound later
786 // if tab not focused (TODO: does it really work ?!)
92ff5bae
BA
787 new Audio("/sounds/silent.mp3").play().then(() => {}).catch(err => {});
788 }
1d184b4c 789 this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
d35f20e4 790 const socketOpenListener = () => {
1d184b4c
BA
791 if (continuation)
792 {
dfb4afc1
BA
793 const fen = localStorage.getItem("fen");
794 const mycolor = localStorage.getItem("mycolor");
795 const oppid = localStorage.getItem("oppid");
796 const moves = JSON.parse(localStorage.getItem("moves"));
797 this.newGame("human", fen, mycolor, oppid, moves, true);
a29d9d6b 798 // Send ping to server (answer pong if opponent is connected)
ecf44502 799 this.conn.send(JSON.stringify({code:"ping",oppid:this.oppid}));
1d184b4c 800 }
30ff6e04
BA
801 else if (localStorage.getItem("newgame") === variant)
802 {
803 // New game request has been cancelled on disconnect
001344b9 804 this.newGame("human", undefined, undefined, undefined, undefined, "reconnect");
30ff6e04 805 }
1d184b4c 806 };
d35f20e4 807 const socketMessageListener = msg => {
1d184b4c
BA
808 const data = JSON.parse(msg.data);
809 switch (data.code)
810 {
811 case "newgame": //opponent found
92342261
BA
812 // oppid: opponent socket ID
813 this.newGame("human", data.fen, data.color, data.oppid);
1d184b4c
BA
814 break;
815 case "newmove": //..he played!
816 this.play(data.move, "animate");
817 break;
f3802fcd 818 case "pong": //received if we sent a ping (game still alive on our side)
1d184b4c 819 this.oppConnected = true;
a29d9d6b 820 const L = this.vr.moves.length;
f3802fcd 821 // Send our "last state" informations to opponent
a29d9d6b
BA
822 this.conn.send(JSON.stringify({
823 code:"lastate",
f3802fcd 824 oppid:this.oppid,
a29d9d6b
BA
825 lastMove:L>0?this.vr.moves[L-1]:undefined,
826 movesCount:L,
827 }));
1d184b4c 828 break;
a29d9d6b
BA
829 case "lastate": //got opponent infos about last move (we might have resigned)
830 if (this.mode!="human" || this.oppid!=data.oppid)
831 {
832 // OK, we resigned
833 this.conn.send(JSON.stringify({
834 code:"lastate",
f3802fcd 835 oppid:this.oppid,
a29d9d6b
BA
836 lastMove:undefined,
837 movesCount:-1,
838 }));
839 }
840 else if (data.movesCount < 0)
841 {
842 // OK, he resigned
843 this.endGame(this.mycolor=="w"?"1-0":"0-1");
844 }
845 else if (data.movesCount < this.vr.moves.length)
846 {
847 // We must tell last move to opponent
848 const L = this.vr.moves.length;
849 this.conn.send(JSON.stringify({
850 code:"lastate",
f3802fcd 851 oppid:this.oppid,
a29d9d6b
BA
852 lastMove:this.vr.moves[L-1],
853 movesCount:L,
854 }));
855 }
856 else if (data.movesCount > this.vr.moves.length) //just got last move from him
857 this.play(data.lastMove, "animate");
ecf44502 858 break;
1d184b4c 859 case "resign": //..you won!
dfb4afc1 860 this.endGame(this.mycolor=="w"?"1-0":"0-1");
1d184b4c 861 break;
f3802fcd 862 // TODO: also use (dis)connect info to count online players?
1d184b4c
BA
863 case "connect":
864 case "disconnect":
865 if (this.mode == "human" && this.oppid == data.id)
866 this.oppConnected = (data.code == "connect");
867 break;
868 }
869 };
d35f20e4 870 const socketCloseListener = () => {
d35f20e4
BA
871 this.conn = new WebSocket(url + "/?sid=" + this.myid + "&page=" + variant);
872 this.conn.addEventListener('open', socketOpenListener);
873 this.conn.addEventListener('message', socketMessageListener);
874 this.conn.addEventListener('close', socketCloseListener);
875 };
876 this.conn.onopen = socketOpenListener;
877 this.conn.onmessage = socketMessageListener;
878 this.conn.onclose = socketCloseListener;
e64084da
BA
879 // Listen to keyboard left/right to navigate in game
880 document.onkeydown = event => {
2748531f 881 if (this.mode == "idle" && !!this.vr && this.vr.moves.length > 0
e64084da
BA
882 && [37,39].includes(event.keyCode))
883 {
884 event.preventDefault();
885 if (event.keyCode == 37) //Back
886 this.undo();
887 else //Forward (39)
888 this.play();
889 }
890 };
1d184b4c
BA
891 },
892 methods: {
01ca2adc
BA
893 download: function() {
894 let content = document.getElementById("pgn-game").innerHTML;
895 content = content.replace(/<br>/g, "\n");
896 // Prepare and trigger download link
897 let downloadAnchor = document.getElementById("download");
898 downloadAnchor.setAttribute("download", "game.pgn");
92342261
BA
899 downloadAnchor.href = "data:text/plain;charset=utf-8," +
900 encodeURIComponent(content);
01ca2adc
BA
901 downloadAnchor.click();
902 },
dfb4afc1
BA
903 endGame: function(score) {
904 this.score = score;
ecf44502 905 let modalBox = document.getElementById("modal-eog");
186516b8 906 modalBox.checked = true;
204e289b 907 // Variants may have special PGN structure (so next function isn't defined here)
3840e240
BA
908 this.pgnTxt = this.vr.getPGN(this.mycolor, this.score, this.fenStart, this.mode);
909 setTimeout(() => { modalBox.checked = false; }, 2000);
1d184b4c
BA
910 if (this.mode == "human")
911 this.clearStorage();
3840e240 912 this.mode = "idle";
e64084da 913 this.cursor = this.vr.moves.length; //to navigate in finished game
1d184b4c
BA
914 this.oppid = "";
915 },
f3802fcd
BA
916 getEndgameMessage: function(score) {
917 let eogMessage = "Unfinished";
918 switch (this.score)
919 {
920 case "1-0":
921 eogMessage = "White win";
922 break;
923 case "0-1":
924 eogMessage = "Black win";
925 break;
926 case "1/2":
927 eogMessage = "Draw";
928 break;
929 }
930 return eogMessage;
931 },
762b7c9c
BA
932 setStorage: function() {
933 localStorage.setItem("myid", this.myid);
934 localStorage.setItem("variant", variant);
935 localStorage.setItem("mycolor", this.mycolor);
936 localStorage.setItem("oppid", this.oppid);
937 localStorage.setItem("fenStart", this.fenStart);
938 localStorage.setItem("moves", JSON.stringify(this.vr.moves));
1d184b4c 939 localStorage.setItem("fen", this.vr.getFen());
762b7c9c
BA
940 },
941 updateStorage: function() {
dfb4afc1 942 localStorage.setItem("moves", JSON.stringify(this.vr.moves));
762b7c9c 943 localStorage.setItem("fen", this.vr.getFen());
1d184b4c
BA
944 },
945 clearStorage: function() {
946 delete localStorage["variant"];
947 delete localStorage["myid"];
948 delete localStorage["mycolor"];
949 delete localStorage["oppid"];
762b7c9c 950 delete localStorage["fenStart"];
1d184b4c 951 delete localStorage["fen"];
dfb4afc1 952 delete localStorage["moves"];
1d184b4c 953 },
c148615e
BA
954 // HACK because mini-css tooltips are persistent after click...
955 getRidOfTooltip: function(elt) {
956 elt.style.visibility = "hidden";
957 setTimeout(() => { elt.style.visibility="visible"; }, 100);
958 },
88af03d2
BA
959 showSettings: function(e) {
960 this.getRidOfTooltip(e.currentTarget);
961 document.getElementById("modal-settings").checked = true;
962 },
963 toggleHints: function() {
964 this.hints = !this.hints;
965 setCookie("hints", this.hints ? "1" : "0");
966 },
2812515a
BA
967 setColor: function(e) {
968 this.color = e.target.options[e.target.selectedIndex].value;
969 setCookie("color", this.color);
12b46d8f 970 },
2812515a 971 setSound: function(e) {
130db3ef 972 this.sound = parseInt(e.target.options[e.target.selectedIndex].value);
2812515a 973 setCookie("sound", this.sound);
12b46d8f 974 },
c148615e
BA
975 clickGameSeek: function(e) {
976 this.getRidOfTooltip(e.currentTarget);
f3802fcd
BA
977 if (this.mode == "human")
978 return; //no newgame while playing
979 if (this.seek)
01a135e2 980 {
283d06a4 981 this.conn.send(JSON.stringify({code:"cancelnewgame"}));
f3802fcd 982 delete localStorage["newgame"]; //cancel game seek
01a135e2
BA
983 this.seek = false;
984 }
f3802fcd 985 else
f3802fcd 986 this.newGame("human");
f3802fcd 987 },
c148615e
BA
988 clickComputerGame: function(e) {
989 this.getRidOfTooltip(e.currentTarget);
f3802fcd
BA
990 if (this.mode == "human")
991 return; //no newgame while playing
992 this.newGame("computer");
993 },
2748531f
BA
994 clickFriendGame: function(e) {
995 this.getRidOfTooltip(e.currentTarget);
996 document.getElementById("modal-fenedit").checked = true;
997 },
2748531f
BA
998 resign: function(e) {
999 this.getRidOfTooltip(e.currentTarget);
c148615e
BA
1000 if (this.mode == "human" && this.oppConnected)
1001 {
1002 try {
1003 this.conn.send(JSON.stringify({code: "resign", oppid: this.oppid}));
1004 } catch (INVALID_STATE_ERR) {
1005 return; //socket is not ready (and not yet reconnected)
1006 }
1007 }
1008 this.endGame(this.mycolor=="w"?"0-1":"1-0");
1009 },
dfb4afc1 1010 newGame: function(mode, fenInit, color, oppId, moves, continuation) {
331fc58c 1011 const fen = fenInit || VariantRules.GenRandInitFen();
1d184b4c
BA
1012 console.log(fen); //DEBUG
1013 if (mode=="human" && !oppId)
1014 {
cd3174c5
BA
1015 const storageVariant = localStorage.getItem("variant");
1016 if (!!storageVariant && storageVariant !== variant)
1017 {
cd3174c5
BA
1018 alert("Finish your " + storageVariant + " game first!");
1019 return;
1020 }
1d184b4c 1021 // Send game request and wait..
01a135e2
BA
1022 localStorage["newgame"] = variant;
1023 this.seek = true;
1d184b4c 1024 this.clearStorage(); //in case of
d35f20e4
BA
1025 try {
1026 this.conn.send(JSON.stringify({code:"newgame", fen:fen}));
1027 } catch (INVALID_STATE_ERR) {
1028 return; //nothing achieved
1029 }
f3802fcd 1030 if (continuation !== "reconnect") //TODO: bad HACK...
a68d899d 1031 {
ecf44502 1032 let modalBox = document.getElementById("modal-newgame");
a68d899d
BA
1033 modalBox.checked = true;
1034 setTimeout(() => { modalBox.checked = false; }, 2000);
1035 }
1d184b4c
BA
1036 return;
1037 }
dfb4afc1 1038 this.vr = new VariantRules(fen, moves || []);
c148615e 1039 this.score = "*";
3840e240 1040 this.pgnTxt = ""; //redundant with this.score = "*", but cleaner
1d184b4c 1041 this.mode = mode;
1fcaa356 1042 this.incheck = []; //in case of
2748531f 1043 this.fenStart = (continuation ? localStorage.getItem("fenStart") : fen);
1d184b4c
BA
1044 if (mode=="human")
1045 {
1046 // Opponent found!
2812515a 1047 if (!continuation) //not playing sound on game continuation
1d184b4c 1048 {
2812515a
BA
1049 if (this.sound >= 1)
1050 new Audio("/sounds/newgame.mp3").play().then(() => {}).catch(err => {});
ecf44502 1051 document.getElementById("modal-newgame").checked = false;
1d184b4c
BA
1052 }
1053 this.oppid = oppId;
1054 this.oppConnected = true;
1055 this.mycolor = color;
186516b8 1056 this.seek = false;
e64a4eff
BA
1057 if (!!moves && moves.length > 0) //imply continuation
1058 {
e64a4eff 1059 const lastMove = moves[moves.length-1];
cd4cad04 1060 this.vr.undo(lastMove);
46302e64 1061 this.incheck = this.vr.getCheckSquares(lastMove);
e64a4eff
BA
1062 this.vr.play(lastMove, "ingame");
1063 }
186516b8 1064 delete localStorage["newgame"];
762b7c9c 1065 this.setStorage(); //in case of interruptions
1d184b4c 1066 }
2748531f 1067 else if (mode == "computer")
1d184b4c 1068 {
331fc58c 1069 this.mycolor = Math.random() < 0.5 ? 'w' : 'b';
1d184b4c
BA
1070 if (this.mycolor == 'b')
1071 setTimeout(this.playComputerMove, 500);
1072 }
2748531f 1073 //else: against a (IRL) friend: nothing more to do
1d184b4c
BA
1074 },
1075 playComputerMove: function() {
4b353936 1076 const timeStart = Date.now();
46302e64 1077 const compMove = this.vr.getComputerMove();
4b353936
BA
1078 // (first move) HACK: avoid selecting elements before they appear on page:
1079 const delay = Math.max(500-(Date.now()-timeStart), 0);
1080 setTimeout(() => this.play(compMove, "animate"), delay);
1d184b4c
BA
1081 },
1082 // Get the identifier of a HTML table cell from its numeric coordinates o.x,o.y.
1083 getSquareId: function(o) {
1084 // NOTE: a separator is required to allow any size of board
1085 return "sq-" + o.x + "-" + o.y;
1086 },
1087 // Inverse function
1088 getSquareFromId: function(id) {
1089 let idParts = id.split('-');
1090 return [parseInt(idParts[1]), parseInt(idParts[2])];
1091 },
1092 mousedown: function(e) {
1093 e = e || window.event;
44461547
BA
1094 let ingame = false;
1095 let elem = e.target;
1096 while (!ingame && elem !== null)
1097 {
1098 if (elem.classList.contains("game"))
1099 {
1100 ingame = true;
1101 break;
1102 }
1103 elem = elem.parentElement;
1104 }
1105 if (!ingame) //let default behavior (click on button...)
1106 return;
1d184b4c
BA
1107 e.preventDefault(); //disable native drag & drop
1108 if (!this.selectedPiece && e.target.classList.contains("piece"))
1109 {
1110 // Next few lines to center the piece on mouse cursor
1111 let rect = e.target.parentNode.getBoundingClientRect();
1112 this.start = {
1113 x: rect.x + rect.width/2,
1114 y: rect.y + rect.width/2,
1115 id: e.target.parentNode.id
1116 };
1117 this.selectedPiece = e.target.cloneNode();
1118 this.selectedPiece.style.position = "absolute";
1119 this.selectedPiece.style.top = 0;
1120 this.selectedPiece.style.display = "inline-block";
1121 this.selectedPiece.style.zIndex = 3000;
1122 let startSquare = this.getSquareFromId(e.target.parentNode.id);
2748531f
BA
1123 const iCanPlay = this.mode!="idle"
1124 && (this.mode=="friend" || this.vr.canIplay(this.mycolor,startSquare));
1125 this.possibleMoves = iCanPlay ? this.vr.getPossibleMovesFrom(startSquare) : [];
92342261
BA
1126 // Next line add moving piece just after current image
1127 // (required for Crazyhouse reserve)
5bd679d5 1128 e.target.parentNode.insertBefore(this.selectedPiece, e.target.nextSibling);
1d184b4c
BA
1129 }
1130 },
1131 mousemove: function(e) {
1132 if (!this.selectedPiece)
1133 return;
1134 e = e || window.event;
1135 // If there is an active element, move it around
1136 if (!!this.selectedPiece)
1137 {
ffea77d9
BA
1138 const [offsetX,offsetY] = !!e.clientX
1139 ? [e.clientX,e.clientY] //desktop browser
1140 : [e.changedTouches[0].pageX, e.changedTouches[0].pageY]; //smartphone
1141 this.selectedPiece.style.left = (offsetX-this.start.x) + "px";
1142 this.selectedPiece.style.top = (offsetY-this.start.y) + "px";
1d184b4c
BA
1143 }
1144 },
1145 mouseup: function(e) {
1146 if (!this.selectedPiece)
1147 return;
1148 e = e || window.event;
1149 // Read drop target (or parentElement, parentNode... if type == "img")
92342261 1150 this.selectedPiece.style.zIndex = -3000; //HACK to find square from final coords
ffea77d9
BA
1151 const [offsetX,offsetY] = !!e.clientX
1152 ? [e.clientX,e.clientY]
1153 : [e.changedTouches[0].pageX, e.changedTouches[0].pageY];
1154 let landing = document.elementFromPoint(offsetX, offsetY);
1d184b4c 1155 this.selectedPiece.style.zIndex = 3000;
92342261
BA
1156 // Next condition: classList.contains(piece) fails because of marks
1157 while (landing.tagName == "IMG")
1d184b4c 1158 landing = landing.parentNode;
92342261
BA
1159 if (this.start.id == landing.id)
1160 {
1161 // A click: selectedPiece and possibleMoves are already filled
1d184b4c 1162 return;
92342261 1163 }
1d184b4c
BA
1164 // OK: process move attempt
1165 let endSquare = this.getSquareFromId(landing.id);
1166 let moves = this.findMatchingMoves(endSquare);
1167 this.possibleMoves = [];
1168 if (moves.length > 1)
1169 this.choices = moves;
1170 else if (moves.length==1)
1171 this.play(moves[0]);
1172 // Else: impossible move
1173 this.selectedPiece.parentNode.removeChild(this.selectedPiece);
1174 delete this.selectedPiece;
1175 this.selectedPiece = null;
1176 },
1177 findMatchingMoves: function(endSquare) {
1178 // Run through moves list and return the matching set (if promotions...)
1179 let moves = [];
1180 this.possibleMoves.forEach(function(m) {
1181 if (endSquare[0] == m.end.x && endSquare[1] == m.end.y)
1182 moves.push(m);
1183 });
1184 return moves;
1185 },
1186 animateMove: function(move) {
1187 let startSquare = document.getElementById(this.getSquareId(move.start));
1188 let endSquare = document.getElementById(this.getSquareId(move.end));
1189 let rectStart = startSquare.getBoundingClientRect();
1190 let rectEnd = endSquare.getBoundingClientRect();
1191 let translation = {x:rectEnd.x-rectStart.x, y:rectEnd.y-rectStart.y};
92ff5bae
BA
1192 let movingPiece =
1193 document.querySelector("#" + this.getSquareId(move.start) + " > img.piece");
92342261 1194 // HACK for animation (with positive translate, image slides "under background")
1d184b4c
BA
1195 // Possible improvement: just alter squares on the piece's way...
1196 squares = document.getElementsByClassName("board");
1197 for (let i=0; i<squares.length; i++)
1198 {
1199 let square = squares.item(i);
1200 if (square.id != this.getSquareId(move.start))
1201 square.style.zIndex = "-1";
1202 }
92342261
BA
1203 movingPiece.style.transform = "translate(" + translation.x + "px," +
1204 translation.y + "px)";
1d184b4c
BA
1205 movingPiece.style.transitionDuration = "0.2s";
1206 movingPiece.style.zIndex = "3000";
1207 setTimeout( () => {
1208 for (let i=0; i<squares.length; i++)
1209 squares.item(i).style.zIndex = "auto";
1210 movingPiece.style = {}; //required e.g. for 0-0 with KR swap
1211 this.play(move);
1212 }, 200);
1213 },
1214 play: function(move, programmatic) {
e64084da
BA
1215 if (!move)
1216 {
1217 // Navigate after game is over
1218 if (this.cursor >= this.vr.moves.length)
1219 return; //already at the end
1220 move = this.vr.moves[this.cursor++];
1221 }
1d184b4c
BA
1222 if (!!programmatic) //computer or human opponent
1223 {
1224 this.animateMove(move);
1225 return;
1226 }
1227 // Not programmatic, or animation is over
1228 if (this.mode == "human" && this.vr.turn == this.mycolor)
a29d9d6b 1229 this.conn.send(JSON.stringify({code:"newmove", move:move, oppid:this.oppid}));
2812515a
BA
1230 if (this.sound == 2)
1231 new Audio("/sounds/chessmove1.mp3").play().then(() => {}).catch(err => {});
e64084da 1232 if (this.mode != "idle")
3300df38
BA
1233 {
1234 this.incheck = this.vr.getCheckSquares(move); //is opponent in check?
e64084da 1235 this.vr.play(move, "ingame");
3300df38 1236 }
e64084da 1237 else
3300df38 1238 {
e64084da 1239 VariantRules.PlayOnBoard(this.vr.board, move);
3300df38
BA
1240 this.$forceUpdate(); //TODO: ?!
1241 }
1d184b4c
BA
1242 if (this.mode == "human")
1243 this.updateStorage(); //after our moves and opponent moves
e64084da
BA
1244 if (this.mode != "idle")
1245 {
1246 const eog = this.vr.checkGameOver();
1247 if (eog != "*")
1248 this.endGame(eog);
1249 }
1250 if (this.mode == "computer" && this.vr.turn != this.mycolor)
1d184b4c
BA
1251 setTimeout(this.playComputerMove, 500);
1252 },
e64084da
BA
1253 undo: function() {
1254 // Navigate after game is over
1255 if (this.cursor == 0)
1256 return; //already at the beginning
3300df38
BA
1257 if (this.cursor == this.vr.moves.length)
1258 this.incheck = []; //in case of...
e64084da
BA
1259 const move = this.vr.moves[--this.cursor];
1260 VariantRules.UndoOnBoard(this.vr.board, move);
1261 this.$forceUpdate(); //TODO: ?!
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BA
1262 },
1263 undoInGame: function() {
1264 const lm = this.vr.lastMove;
1265 if (!!lm)
1266 this.vr.undo(lm);
1267 },
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BA
1268 },
1269})