-// This can work for squared boards (2 or 4 players), with some adaptations (TODO)
-// TODO: for 3 players, write a "board3.js"
-Vue.component('my-board', {
- // Last move cannot be guessed from here, and is required to highlight squares
- // vr: object to check moves, print board...
- // mode: HH, HC or analyze
- // userColor: for mode HH or HC
- props: ["vr","lastMove","mode","orientation","userColor"],
- data: function () {
- return {
- hints: (!localStorage["hints"] ? true : localStorage["hints"] === "1"),
- bcolor: localStorage["bcolor"] || "lichess", //lichess, chesscom or chesstempo
- possibleMoves: [], //filled after each valid click/dragstart
- choices: [], //promotion pieces, or checkered captures... (as moves)
- selectedPiece: null, //moving piece (or clicked piece)
- incheck: [],
- start: {}, //pixels coordinates + id of starting square (click or drag)
- };
- },
- render(h) {
- if (!this.vr)
- return;
- const [sizeX,sizeY] = [V.size.x,V.size.y];
- // Precompute hints squares to facilitate rendering
- let hintSquares = doubleArray(sizeX, sizeY, false);
- this.possibleMoves.forEach(m => { hintSquares[m.end.x][m.end.y] = true; });
- // Also precompute in-check squares
- let incheckSq = doubleArray(sizeX, sizeY, false);
- this.incheck.forEach(sq => { incheckSq[sq[0]][sq[1]] = true; });
- const squareWidth = 40; //TODO: compute this
- const choices = h(
- 'div',
- {
- attrs: { "id": "choices" },
- 'class': { 'row': true },
- style: {
- "display": this.choices.length>0?"block":"none",
- "top": "-" + ((sizeY/2)*squareWidth+squareWidth/2) + "px",
- "width": (this.choices.length * squareWidth) + "px",
- "height": squareWidth + "px",
- },
- },
- this.choices.map(m => { //a "choice" is a move
- return h('div',
- {
- 'class': {
- 'board': true,
- ['board'+sizeY]: true,
- },
- style: {
- 'width': (100/this.choices.length) + "%",
- 'padding-bottom': (100/this.choices.length) + "%",
- },
- },
- [h('img',
- {
- attrs: { "src": '/images/pieces/' +
- V.getPpath(m.appear[0].c+m.appear[0].p) + '.svg' },
- 'class': { 'choice-piece': true },
- on: {
- "click": e => { this.play(m); this.choices=[]; },
- // NOTE: add 'touchstart' event to fix a problem on smartphones
- "touchstart": e => { this.play(m); this.choices=[]; },
- },
- })
- ]
- );
- })
- );
- // Create board element (+ reserves if needed by variant or mode)
- const lm = this.lastMove;
- const showLight = this.hints && variant.name != "Dark";
- const gameDiv = h(
- 'div',
- {
- 'class': {
- 'game': true,
- 'clearer': true,
- },
- },
- [_.range(sizeX).map(i => {
- let ci = (this.orientation=='w' ? i : sizeX-i-1);
- return h(
- 'div',
- {
- 'class': {
- 'row': true,
- },
- style: { 'opacity': this.choices.length>0?"0.5":"1" },
- },
- _.range(sizeY).map(j => {
- let cj = (this.orientation=='w' ? j : sizeY-j-1);
- let elems = [];
- if (this.vr.board[ci][cj] != V.EMPTY && (variant.name!="Dark"
- || this.gameOver || this.mode == "analyze"
- || this.vr.enlightened[this.userColor][ci][cj]))
- {
- elems.push(
- h(
- 'img',
- {
- 'class': {
- 'piece': true,
- 'ghost': !!this.selectedPiece
- && this.selectedPiece.parentNode.id == "sq-"+ci+"-"+cj,
- },
- attrs: {
- src: "/images/pieces/" +
- V.getPpath(this.vr.board[ci][cj]) + ".svg",
- },
- }
- )
- );
- }
- if (this.hints && hintSquares[ci][cj])
- {
- elems.push(
- h(
- 'img',
- {
- 'class': {
- 'mark-square': true,
- },
- attrs: {
- src: "/images/mark.svg",
- },
- }
- )
- );
- }
- return h(
- 'div',
- {
- 'class': {
- 'board': true,
- ['board'+sizeY]: true,
- 'light-square': (i+j)%2==0,
- 'dark-square': (i+j)%2==1,
- [this.bcolor]: true,
- 'in-shadow': variant.name=="Dark" && !this.gameOver
- && this.mode != "analyze"
- && !this.vr.enlightened[this.userColor][ci][cj],
- 'highlight': showLight && !!lm && _.isMatch(lm.end, {x:ci,y:cj}),
- 'incheck': showLight && incheckSq[ci][cj],
- },
- attrs: {
- id: getSquareId({x:ci,y:cj}),
- },
- },
- elems
- );
- })
- );
- }), choices]
- );
- let elementArray = [choices, gameDiv];
- if (!!this.vr.reserve)
- {
- const shiftIdx = (this.userColor=="w" ? 0 : 1);
- let myReservePiecesArray = [];
- for (let i=0; i<V.RESERVE_PIECES.length; i++)
- {
- myReservePiecesArray.push(h('div',
- {
- 'class': {'board':true, ['board'+sizeY]:true},
- attrs: { id: getSquareId({x:sizeX+shiftIdx,y:i}) }
- },
- [
- h('img',
- {
- 'class': {"piece":true, "reserve":true},
- attrs: {
- "src": "/images/pieces/" +
- this.vr.getReservePpath(this.userColor,i) + ".svg",
- }
- }),
- h('sup',
- {"class": { "reserve-count": true } },
- [ this.vr.reserve[this.userColor][V.RESERVE_PIECES[i]] ]
- )
- ]));
- }
- let oppReservePiecesArray = [];
- const oppCol = V.GetOppCol(this.userColor);
- for (let i=0; i<V.RESERVE_PIECES.length; i++)
- {
- oppReservePiecesArray.push(h('div',
- {
- 'class': {'board':true, ['board'+sizeY]:true},
- attrs: { id: getSquareId({x:sizeX+(1-shiftIdx),y:i}) }
- },
- [
- h('img',
- {
- 'class': {"piece":true, "reserve":true},
- attrs: {
- "src": "/images/pieces/" +
- this.vr.getReservePpath(oppCol,i) + ".svg",
- }
- }),
- h('sup',
- {"class": { "reserve-count": true } },
- [ this.vr.reserve[oppCol][V.RESERVE_PIECES[i]] ]
- )
- ]));
- }
- let reserves = h('div',
- {
- 'class':{
- 'game': true,
- "reserve-div": true,
- },
- },
- [
- h('div',
- {
- 'class': {
- 'row': true,
- "reserve-row-1": true,
- },
- },
- myReservePiecesArray
- ),
- h('div',
- { 'class': { 'row': true }},
- oppReservePiecesArray
- )
- ]
- );
- elementArray.push(reserves);
- }
- return h(
- 'div',
- {
- 'class': {
- "col-sm-12":true,
- "col-md-10":true,
- "col-md-offset-1":true,
- "col-lg-8":true,
- "col-lg-offset-2":true,
- },
- // NOTE: click = mousedown + mouseup
- on: {
- mousedown: this.mousedown,
- mousemove: this.mousemove,
- mouseup: this.mouseup,
- touchstart: this.mousedown,
- touchmove: this.mousemove,
- touchend: this.mouseup,
- },
- },
- elementArray
- );
- },
- methods: {
- mousedown: function(e) {
- e = e || window.event;
- let ingame = false;
- let elem = e.target;
- while (!ingame && elem !== null)
- {
- if (elem.classList.contains("game"))
- {
- ingame = true;
- break;
- }
- elem = elem.parentElement;
- }
- if (!ingame) //let default behavior (click on button...)
- return;
- e.preventDefault(); //disable native drag & drop
- if (!this.selectedPiece && e.target.classList.contains("piece"))
- {
- // Next few lines to center the piece on mouse cursor
- let rect = e.target.parentNode.getBoundingClientRect();
- this.start = {
- x: rect.x + rect.width/2,
- y: rect.y + rect.width/2,
- id: e.target.parentNode.id
- };
- this.selectedPiece = e.target.cloneNode();
- this.selectedPiece.style.position = "absolute";
- this.selectedPiece.style.top = 0;
- this.selectedPiece.style.display = "inline-block";
- this.selectedPiece.style.zIndex = 3000;
- const startSquare = getSquareFromId(e.target.parentNode.id);
- this.possibleMoves = [];
- const color = this.mode=="analyze" || this.gameOver
- ? this.vr.turn
- : this.userColor;
- if (this.vr.canIplay(color,startSquare))
- this.possibleMoves = this.vr.getPossibleMovesFrom(startSquare);
- // Next line add moving piece just after current image
- // (required for Crazyhouse reserve)
- e.target.parentNode.insertBefore(this.selectedPiece, e.target.nextSibling);
- }
- },
- mousemove: function(e) {
- if (!this.selectedPiece)
- return;
- e = e || window.event;
- // If there is an active element, move it around
- if (!!this.selectedPiece)
- {
- const [offsetX,offsetY] = !!e.clientX
- ? [e.clientX,e.clientY] //desktop browser
- : [e.changedTouches[0].pageX, e.changedTouches[0].pageY]; //smartphone
- this.selectedPiece.style.left = (offsetX-this.start.x) + "px";
- this.selectedPiece.style.top = (offsetY-this.start.y) + "px";
- }
- },
- mouseup: function(e) {
- if (!this.selectedPiece)
- return;
- e = e || window.event;
- // Read drop target (or parentElement, parentNode... if type == "img")
- this.selectedPiece.style.zIndex = -3000; //HACK to find square from final coords
- const [offsetX,offsetY] = !!e.clientX
- ? [e.clientX,e.clientY]
- : [e.changedTouches[0].pageX, e.changedTouches[0].pageY];
- let landing = document.elementFromPoint(offsetX, offsetY);
- this.selectedPiece.style.zIndex = 3000;
- // Next condition: classList.contains(piece) fails because of marks
- while (landing.tagName == "IMG")
- landing = landing.parentNode;
- if (this.start.id == landing.id)
- {
- // A click: selectedPiece and possibleMoves are already filled
- return;
- }
- // OK: process move attempt
- let endSquare = getSquareFromId(landing.id);
- let moves = this.findMatchingMoves(endSquare);
- this.possibleMoves = [];
- if (moves.length > 1)
- this.choices = moves;
- else if (moves.length==1)
- this.play(moves[0]);
- // Else: impossible move
- this.selectedPiece.parentNode.removeChild(this.selectedPiece);
- delete this.selectedPiece;
- this.selectedPiece = null;
- },
- findMatchingMoves: function(endSquare) {
- // Run through moves list and return the matching set (if promotions...)
- let moves = [];
- this.possibleMoves.forEach(function(m) {
- if (endSquare[0] == m.end.x && endSquare[1] == m.end.y)
- moves.push(m);
- });
- return moves;
- },
- play: function(move) {
- this.$emit('play-move', move);
- },
- },
-})