| 1 | <script> |
| 2 | import { getSquareId, getSquareFromId } from "@/utils/squareId"; |
| 3 | import { ArrayFun } from "@/utils/array"; |
| 4 | import { store } from "@/store"; |
| 5 | export default { |
| 6 | name: 'my-board', |
| 7 | // Last move cannot be guessed from here, and is required to highlight squares |
| 8 | // vr: object to check moves, print board... |
| 9 | // userColor is left undefined for an external observer |
| 10 | props: ["vr","lastMove","analyze","incheck","orientation","userColor","vname"], |
| 11 | data: function () { |
| 12 | return { |
| 13 | possibleMoves: [], //filled after each valid click/dragstart |
| 14 | choices: [], //promotion pieces, or checkered captures... (as moves) |
| 15 | selectedPiece: null, //moving piece (or clicked piece) |
| 16 | start: {}, //pixels coordinates + id of starting square (click or drag) |
| 17 | settings: store.state.settings, |
| 18 | }; |
| 19 | }, |
| 20 | render(h) { |
| 21 | if (!this.vr) |
| 22 | { |
| 23 | // Return empty div of class 'game' to avoid error when setting size |
| 24 | return h("div", |
| 25 | { |
| 26 | "class": { |
| 27 | "game": true, |
| 28 | }, |
| 29 | }); |
| 30 | } |
| 31 | const [sizeX,sizeY] = [V.size.x,V.size.y]; |
| 32 | // Precompute hints squares to facilitate rendering |
| 33 | let hintSquares = ArrayFun.init(sizeX, sizeY, false); |
| 34 | this.possibleMoves.forEach(m => { hintSquares[m.end.x][m.end.y] = true; }); |
| 35 | // Also precompute in-check squares |
| 36 | let incheckSq = ArrayFun.init(sizeX, sizeY, false); |
| 37 | this.incheck.forEach(sq => { incheckSq[sq[0]][sq[1]] = true; }); |
| 38 | |
| 39 | // Create board element (+ reserves if needed by variant or mode) |
| 40 | const lm = this.lastMove; |
| 41 | const showLight = this.settings.highlight && this.vname != "Dark"; |
| 42 | const gameDiv = h( |
| 43 | 'div', |
| 44 | { |
| 45 | 'class': { |
| 46 | 'game': true, |
| 47 | 'clearer': true, |
| 48 | }, |
| 49 | }, |
| 50 | [...Array(sizeX).keys()].map(i => { |
| 51 | let ci = (this.orientation=='w' ? i : sizeX-i-1); |
| 52 | return h( |
| 53 | 'div', |
| 54 | { |
| 55 | 'class': { |
| 56 | 'row': true, |
| 57 | }, |
| 58 | style: { 'opacity': this.choices.length>0?"0.5":"1" }, |
| 59 | }, |
| 60 | [...Array(sizeY).keys()].map(j => { |
| 61 | let cj = (this.orientation=='w' ? j : sizeY-j-1); |
| 62 | let elems = []; |
| 63 | if (this.vr.board[ci][cj] != V.EMPTY && (this.vname!="Dark" |
| 64 | || this.analyze || (!!this.userColor |
| 65 | && this.vr.enlightened[this.userColor][ci][cj]))) |
| 66 | { |
| 67 | elems.push( |
| 68 | h( |
| 69 | 'img', |
| 70 | { |
| 71 | 'class': { |
| 72 | 'piece': true, |
| 73 | 'ghost': !!this.selectedPiece |
| 74 | && this.selectedPiece.parentNode.id == "sq-"+ci+"-"+cj, |
| 75 | }, |
| 76 | attrs: { |
| 77 | src: "/images/pieces/" + |
| 78 | V.getPpath(this.vr.board[ci][cj]) + ".svg", |
| 79 | }, |
| 80 | } |
| 81 | ) |
| 82 | ); |
| 83 | } |
| 84 | if (this.settings.hints && hintSquares[ci][cj]) |
| 85 | { |
| 86 | elems.push( |
| 87 | h( |
| 88 | 'img', |
| 89 | { |
| 90 | 'class': { |
| 91 | 'mark-square': true, |
| 92 | }, |
| 93 | attrs: { |
| 94 | src: "/images/mark.svg", |
| 95 | }, |
| 96 | } |
| 97 | ) |
| 98 | ); |
| 99 | } |
| 100 | return h( |
| 101 | 'div', |
| 102 | { |
| 103 | 'class': { |
| 104 | 'board': true, |
| 105 | ['board'+sizeY]: true, |
| 106 | 'light-square': (i+j)%2==0, |
| 107 | 'dark-square': (i+j)%2==1, |
| 108 | [this.settings.bcolor]: true, |
| 109 | 'in-shadow': this.vname=="Dark" && !this.analyze |
| 110 | && (!this.userColor |
| 111 | || !this.vr.enlightened[this.userColor][ci][cj]), |
| 112 | 'highlight': showLight && !!lm && lm.end.x == ci && lm.end.y == cj, |
| 113 | 'incheck': showLight && incheckSq[ci][cj], |
| 114 | }, |
| 115 | attrs: { |
| 116 | id: getSquareId({x:ci,y:cj}), |
| 117 | }, |
| 118 | }, |
| 119 | elems |
| 120 | ); |
| 121 | }) |
| 122 | ); |
| 123 | }) |
| 124 | ); |
| 125 | let elementArray = [gameDiv]; |
| 126 | const playingColor = this.userColor || "w"; //default for an observer |
| 127 | if (!!this.vr.reserve) |
| 128 | { |
| 129 | const shiftIdx = (playingColor=="w" ? 0 : 1); |
| 130 | let myReservePiecesArray = []; |
| 131 | for (let i=0; i<V.RESERVE_PIECES.length; i++) |
| 132 | { |
| 133 | myReservePiecesArray.push(h('div', |
| 134 | { |
| 135 | 'class': {'board':true, ['board'+sizeY]:true}, |
| 136 | attrs: { id: getSquareId({x:sizeX+shiftIdx,y:i}) } |
| 137 | }, |
| 138 | [ |
| 139 | h('img', |
| 140 | { |
| 141 | 'class': {"piece":true, "reserve":true}, |
| 142 | attrs: { |
| 143 | "src": "/images/pieces/" + |
| 144 | this.vr.getReservePpath(playingColor,i) + ".svg", |
| 145 | } |
| 146 | }), |
| 147 | h('sup', |
| 148 | {"class": { "reserve-count": true } }, |
| 149 | [ this.vr.reserve[playingColor][V.RESERVE_PIECES[i]] ] |
| 150 | ) |
| 151 | ])); |
| 152 | } |
| 153 | let oppReservePiecesArray = []; |
| 154 | const oppCol = V.GetOppCol(playingColor); |
| 155 | for (let i=0; i<V.RESERVE_PIECES.length; i++) |
| 156 | { |
| 157 | oppReservePiecesArray.push(h('div', |
| 158 | { |
| 159 | 'class': {'board':true, ['board'+sizeY]:true}, |
| 160 | attrs: { id: getSquareId({x:sizeX+(1-shiftIdx),y:i}) } |
| 161 | }, |
| 162 | [ |
| 163 | h('img', |
| 164 | { |
| 165 | 'class': {"piece":true, "reserve":true}, |
| 166 | attrs: { |
| 167 | "src": "/images/pieces/" + |
| 168 | this.vr.getReservePpath(oppCol,i) + ".svg", |
| 169 | } |
| 170 | }), |
| 171 | h('sup', |
| 172 | {"class": { "reserve-count": true } }, |
| 173 | [ this.vr.reserve[oppCol][V.RESERVE_PIECES[i]] ] |
| 174 | ) |
| 175 | ])); |
| 176 | } |
| 177 | let reserves = h('div', |
| 178 | { |
| 179 | 'class':{ |
| 180 | 'game': true, |
| 181 | "reserve-div": true, |
| 182 | }, |
| 183 | }, |
| 184 | [ |
| 185 | h('div', |
| 186 | { |
| 187 | 'class': { |
| 188 | 'row': true, |
| 189 | "reserve-row-1": true, |
| 190 | }, |
| 191 | }, |
| 192 | myReservePiecesArray |
| 193 | ), |
| 194 | h('div', |
| 195 | { 'class': { 'row': true }}, |
| 196 | oppReservePiecesArray |
| 197 | ) |
| 198 | ] |
| 199 | ); |
| 200 | elementArray.push(reserves); |
| 201 | } |
| 202 | const boardElt = document.querySelector(".game"); |
| 203 | if (this.choices.length > 0 && !!boardElt) //no choices to show at first drawing |
| 204 | { |
| 205 | const squareWidth = boardElt.offsetWidth / sizeY; |
| 206 | const offset = [boardElt.offsetTop, boardElt.offsetLeft]; |
| 207 | const choices = h( |
| 208 | 'div', |
| 209 | { |
| 210 | attrs: { "id": "choices" }, |
| 211 | 'class': { 'row': true }, |
| 212 | style: { |
| 213 | "top": (offset[0] + (sizeY/2)*squareWidth-squareWidth/2) + "px", |
| 214 | "left": (offset[1] + squareWidth*(sizeY - this.choices.length)/2) + "px", |
| 215 | "width": (this.choices.length * squareWidth) + "px", |
| 216 | "height": squareWidth + "px", |
| 217 | }, |
| 218 | }, |
| 219 | this.choices.map(m => { //a "choice" is a move |
| 220 | return h('div', |
| 221 | { |
| 222 | 'class': { |
| 223 | 'board': true, |
| 224 | ['board'+sizeY]: true, |
| 225 | }, |
| 226 | style: { |
| 227 | 'width': (100/this.choices.length) + "%", |
| 228 | 'padding-bottom': (100/this.choices.length) + "%", |
| 229 | }, |
| 230 | }, |
| 231 | [h('img', |
| 232 | { |
| 233 | attrs: { "src": '/images/pieces/' + |
| 234 | V.getPpath(m.appear[0].c+m.appear[0].p) + '.svg' }, |
| 235 | 'class': { 'choice-piece': true }, |
| 236 | on: { |
| 237 | "click": e => { this.play(m); this.choices=[]; }, |
| 238 | }, |
| 239 | }) |
| 240 | ] |
| 241 | ); |
| 242 | }) |
| 243 | ); |
| 244 | elementArray.unshift(choices); |
| 245 | } |
| 246 | let onEvents = {}; |
| 247 | // NOTE: click = mousedown + mouseup |
| 248 | if ('ontouchstart' in window) |
| 249 | { |
| 250 | onEvents = { |
| 251 | on: { |
| 252 | touchstart: this.mousedown, |
| 253 | touchmove: this.mousemove, |
| 254 | touchend: this.mouseup, |
| 255 | }, |
| 256 | }; |
| 257 | } |
| 258 | else |
| 259 | { |
| 260 | onEvents = { |
| 261 | on: { |
| 262 | mousedown: this.mousedown, |
| 263 | mousemove: this.mousemove, |
| 264 | mouseup: this.mouseup, |
| 265 | }, |
| 266 | }; |
| 267 | } |
| 268 | return h( |
| 269 | 'div', |
| 270 | onEvents, |
| 271 | elementArray |
| 272 | ); |
| 273 | }, |
| 274 | methods: { |
| 275 | mousedown: function(e) { |
| 276 | // Abort if a piece is already being processed, or target is not a piece. |
| 277 | // NOTE: just looking at classList[0] because piece is the first assigned class |
| 278 | if (!!this.selectedPiece || e.target.classList[0] != "piece") |
| 279 | return; |
| 280 | e.preventDefault(); //disable native drag & drop |
| 281 | let parent = e.target.parentNode; //the surrounding square |
| 282 | // Next few lines to center the piece on mouse cursor |
| 283 | let rect = parent.getBoundingClientRect(); |
| 284 | this.start = { |
| 285 | x: rect.x + rect.width/2, |
| 286 | y: rect.y + rect.width/2, |
| 287 | id: parent.id, |
| 288 | }; |
| 289 | this.selectedPiece = e.target.cloneNode(); |
| 290 | let spStyle = this.selectedPiece.style |
| 291 | spStyle.position = "absolute"; |
| 292 | spStyle.top = 0; |
| 293 | spStyle.display = "inline-block"; |
| 294 | spStyle.zIndex = 3000; |
| 295 | const startSquare = getSquareFromId(parent.id); |
| 296 | this.possibleMoves = []; |
| 297 | const color = (this.analyze ? this.vr.turn : this.userColor); |
| 298 | if (this.vr.canIplay(color,startSquare)) |
| 299 | this.possibleMoves = this.vr.getPossibleMovesFrom(startSquare); |
| 300 | // Next line add moving piece just after current image |
| 301 | // (required for Crazyhouse reserve) |
| 302 | parent.insertBefore(this.selectedPiece, e.target.nextSibling); |
| 303 | }, |
| 304 | mousemove: function(e) { |
| 305 | if (!this.selectedPiece) |
| 306 | return; |
| 307 | // There is an active element: move it around |
| 308 | const [offsetX,offsetY] = !!e.clientX |
| 309 | ? [e.clientX,e.clientY] //desktop browser |
| 310 | : [e.changedTouches[0].pageX, e.changedTouches[0].pageY]; //smartphone |
| 311 | this.selectedPiece.style.left = (offsetX-this.start.x) + "px"; |
| 312 | this.selectedPiece.style.top = (offsetY-this.start.y) + "px"; |
| 313 | }, |
| 314 | mouseup: function(e) { |
| 315 | if (!this.selectedPiece) |
| 316 | return; |
| 317 | // There is an active element: obtain the move from start and end squares |
| 318 | this.selectedPiece.style.zIndex = -3000; //HACK to find square from final coords |
| 319 | const [offsetX,offsetY] = !!e.clientX |
| 320 | ? [e.clientX,e.clientY] |
| 321 | : [e.changedTouches[0].pageX, e.changedTouches[0].pageY]; |
| 322 | let landing = document.elementFromPoint(offsetX, offsetY); |
| 323 | this.selectedPiece.style.zIndex = 3000; |
| 324 | // Next condition: classList.contains(piece) fails because of marks |
| 325 | while (landing.tagName == "IMG") |
| 326 | landing = landing.parentNode; |
| 327 | if (this.start.id == landing.id) //one or multi clicks on same piece |
| 328 | return; |
| 329 | // OK: process move attempt, landing is a square node |
| 330 | let endSquare = getSquareFromId(landing.id); |
| 331 | let moves = this.findMatchingMoves(endSquare); |
| 332 | this.possibleMoves = []; |
| 333 | if (moves.length > 1) |
| 334 | this.choices = moves; |
| 335 | else if (moves.length==1) |
| 336 | this.play(moves[0]); |
| 337 | // Else: impossible move |
| 338 | this.selectedPiece.parentNode.removeChild(this.selectedPiece); |
| 339 | delete this.selectedPiece; |
| 340 | this.selectedPiece = null; |
| 341 | }, |
| 342 | findMatchingMoves: function(endSquare) { |
| 343 | // Run through moves list and return the matching set (if promotions...) |
| 344 | let moves = []; |
| 345 | this.possibleMoves.forEach(function(m) { |
| 346 | if (endSquare[0] == m.end.x && endSquare[1] == m.end.y) |
| 347 | moves.push(m); |
| 348 | }); |
| 349 | return moves; |
| 350 | }, |
| 351 | play: function(move) { |
| 352 | this.$emit('play-move', move); |
| 353 | }, |
| 354 | }, |
| 355 | }; |
| 356 | </script> |
| 357 | |
| 358 | <style lang="sass" scoped> |
| 359 | .game.reserve-div |
| 360 | margin-bottom: 18px |
| 361 | |
| 362 | .reserve-count |
| 363 | padding-left: 40% |
| 364 | |
| 365 | .reserve-row-1 |
| 366 | margin-bottom: 15px |
| 367 | |
| 368 | // NOTE: no variants with reserve of size != 8 |
| 369 | |
| 370 | .game |
| 371 | width: 100% |
| 372 | margin: 0 |
| 373 | .board |
| 374 | cursor: pointer |
| 375 | |
| 376 | #choices |
| 377 | margin: 0 |
| 378 | position: absolute |
| 379 | z-index: 300 |
| 380 | overflow-y: inherit |
| 381 | background-color: rgba(0,0,0,0) |
| 382 | img |
| 383 | cursor: pointer |
| 384 | background-color: #e6ee9c |
| 385 | &:hover |
| 386 | background-color: skyblue |
| 387 | &.choice-piece |
| 388 | width: 100% |
| 389 | height: auto |
| 390 | display: block |
| 391 | |
| 392 | img.ghost |
| 393 | position: absolute |
| 394 | opacity: 0.4 |
| 395 | top: 0 |
| 396 | |
| 397 | .highlight |
| 398 | background-color: #00cc66 !important |
| 399 | |
| 400 | .incheck |
| 401 | background-color: #cc3300 !important |
| 402 | |
| 403 | .light-square.lichess |
| 404 | background-color: #f0d9b5; |
| 405 | .dark-square.lichess |
| 406 | background-color: #b58863; |
| 407 | |
| 408 | .light-square.chesscom |
| 409 | background-color: #e5e5ca; |
| 410 | .dark-square.chesscom |
| 411 | background-color: #6f8f57; |
| 412 | |
| 413 | .light-square.chesstempo |
| 414 | background-color: #fdfdfd; |
| 415 | .dark-square.chesstempo |
| 416 | background-color: #88a0a8; |
| 417 | </style> |