X-Git-Url: https://git.auder.net/?p=xogo.git;a=blobdiff_plain;f=base_rules.js;h=88197ea0bed834c970659b95068aa5bec6f0b1aa;hp=4ee389fe7d451f28ef9c68e62f6cfd5c028aa527;hb=HEAD;hpb=27a6d311f49e4c1ae9415f4dc4b79dfcb690c80d diff --git a/base_rules.js b/base_rules.js index 4ee389f..3d8e463 100644 --- a/base_rules.js +++ b/base_rules.js @@ -1,5 +1,6 @@ import {Random} from "/utils/alea.js"; import {ArrayFun} from "/utils/array.js"; +import {FenUtil} from "/utils/setupPieces.js"; import PiPo from "/utils/PiPo.js"; import Move from "/utils/Move.js"; @@ -96,6 +97,14 @@ export default class ChessRules { return true; } + // Allow to take (moving: not disappearing) own pieces? + get hasSelfCaptures() { + return ( + this.options["recycle"] || + (this.options["teleport"] && this.subTurnTeleport == 1) + ); + } + get hasReserve() { return ( !!this.options["crazyhouse"] || @@ -121,6 +130,11 @@ export default class ChessRules { return false; } + // Some variants do not flip board as black + get flippedBoard() { + return (this.playerColor == 'b'); + } + // Some variants use click infos: doClick(coords) { if (typeof coords.x != "number") @@ -161,6 +175,22 @@ export default class ChessRules { return Object.values(cd).map(c => c.toString(36)).join(""); } + // c10 --> 02 (assuming 10 rows) + static SquareFromUsual(sq) { + return ( + (this.size.x - parseInt(sq.substring(1), 10)).toString(36) + + (sq.charCodeAt(0) - 97).toString(36) + ); + } + + // 02 --> c10 + static UsualFromSquare(sq) { + return ( + String.fromCharCode(parseInt(sq.charAt(1), 36) + 97) + + (this.size.x - parseInt(sq.charAt(0), 36)).toString(10) + ); + } + coordsToId(cd) { if (typeof cd.x == "number") { return ( @@ -215,66 +245,20 @@ export default class ChessRules { // Setup the initial random-or-not (asymmetric-or-not) position genRandInitBaseFen() { - let fen, flags = "0707"; - if (!this.options.randomness) - // Deterministic: - fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR"; - - else { - // Randomize - let pieces = {w: new Array(8), b: new Array(8)}; - flags = ""; - // Shuffle pieces on first (and last rank if randomness == 2) - for (let c of ["w", "b"]) { - if (c == 'b' && this.options.randomness == 1) { - pieces['b'] = pieces['w']; - flags += flags; - break; - } - let positions = ArrayFun.range(8); - // Get random squares for bishops - let randIndex = 2 * Random.randInt(4); - const bishop1Pos = positions[randIndex]; - // The second bishop must be on a square of different color - let randIndex_tmp = 2 * Random.randInt(4) + 1; - const bishop2Pos = positions[randIndex_tmp]; - // Remove chosen squares - positions.splice(Math.max(randIndex, randIndex_tmp), 1); - positions.splice(Math.min(randIndex, randIndex_tmp), 1); - // Get random squares for knights - randIndex = Random.randInt(6); - const knight1Pos = positions[randIndex]; - positions.splice(randIndex, 1); - randIndex = Random.randInt(5); - const knight2Pos = positions[randIndex]; - positions.splice(randIndex, 1); - // Get random square for queen - randIndex = Random.randInt(4); - const queenPos = positions[randIndex]; - positions.splice(randIndex, 1); - // Rooks and king positions are now fixed, - // because of the ordering rook-king-rook - const rook1Pos = positions[0]; - const kingPos = positions[1]; - const rook2Pos = positions[2]; - // Finally put the shuffled pieces in the board array - pieces[c][rook1Pos] = "r"; - pieces[c][knight1Pos] = "n"; - pieces[c][bishop1Pos] = "b"; - pieces[c][queenPos] = "q"; - pieces[c][kingPos] = "k"; - pieces[c][bishop2Pos] = "b"; - pieces[c][knight2Pos] = "n"; - pieces[c][rook2Pos] = "r"; - flags += rook1Pos.toString() + rook2Pos.toString(); + const s = FenUtil.setupPieces( + ['r', 'n', 'b', 'q', 'k', 'b', 'n', 'r'], + { + randomness: this.options["randomness"], + between: [{p1: 'k', p2: 'r'}], + diffCol: ['b'], + flags: ['r'] } - fen = ( - pieces["b"].join("") + - "/pppppppp/8/8/8/8/PPPPPPPP/" + - pieces["w"].join("").toUpperCase() - ); - } - return { fen: fen, o: {flags: flags} }; + ); + return { + fen: s.b.join("") + "/pppppppp/8/8/8/8/PPPPPPPP/" + + s.w.join("").toUpperCase(), + o: {flags: s.flags} + }; } // "Parse" FEN: just return untransformed string data @@ -331,9 +315,9 @@ export default class ChessRules { // Position part of the FEN string getPosition() { let position = ""; - for (let i = 0; i < this.size.y; i++) { + for (let i = 0; i < this.size.x; i++) { let emptyCount = 0; - for (let j = 0; j < this.size.x; j++) { + for (let j = 0; j < this.size.y; j++) { if (this.board[i][j] == "") emptyCount++; else { @@ -348,7 +332,7 @@ export default class ChessRules { if (emptyCount > 0) // "Flush remainder" position += C.FenEmptySquares(emptyCount); - if (i < this.size.y - 1) + if (i < this.size.x - 1) position += "/"; //separate rows } return position; @@ -356,7 +340,7 @@ export default class ChessRules { // Flags part of the FEN string getFlagsFen() { - return ["w", "b"].map(c => { + return ['w', 'b'].map(c => { return this.castleFlags[c].map(x => x.toString(36)).join(""); }).join(""); } @@ -370,9 +354,9 @@ export default class ChessRules { getReserveFen(o) { if (o.init) - return "000000000000"; + return Array(2 * V.ReserveArray.length).fill('0').join(""); return ( - ["w","b"].map(c => Object.values(this.reserve[c]).join("")).join("") + ['w', 'b'].map(c => Object.values(this.reserve[c]).join("")).join("") ); } @@ -404,9 +388,6 @@ export default class ChessRules { if (this.options[opt.variable] === undefined) this.options[opt.variable] = opt.defaut; }); - if (o.genFenOnly) - // This object will be used only for initial FEN generation - return; // Some variables this.playerColor = o.color; @@ -476,14 +457,16 @@ export default class ChessRules { } // ordering as in pieces() p,r,n,b,q,k - initReserves(reserveStr, pieceArray) { - if (!pieceArray) - pieceArray = ['p', 'r', 'n', 'b', 'q', 'k']; + static get ReserveArray() { + return ['p', 'r', 'n', 'b', 'q', 'k']; + } + + initReserves(reserveStr) { const counts = reserveStr.split("").map(c => parseInt(c, 36)); - const L = pieceArray.length; + const L = V.ReserveArray.length; this.reserve = { - w: ArrayFun.toObject(pieceArray, counts.slice(0, L)), - b: ArrayFun.toObject(pieceArray, counts.slice(L, 2 * L)) + w: ArrayFun.toObject(V.ReserveArray, counts.slice(0, L)), + b: ArrayFun.toObject(V.ReserveArray, counts.slice(L, 2 * L)) }; } @@ -498,7 +481,7 @@ export default class ChessRules { // VISUAL UTILS getPieceWidth(rwidth) { - return (rwidth / this.size.y); + return (rwidth / Math.max(this.size.x, this.size.y)); } getReserveSquareSize(rwidth, nbR) { @@ -518,7 +501,7 @@ export default class ChessRules { } getRankInReserve(c, p) { - const pieces = Object.keys(this.pieces()); + const pieces = Object.keys(this.pieces(c, c, p)); const lastIndex = pieces.findIndex(pp => pp == p) let toTest = pieces.slice(0, lastIndex); return toTest.reduce( @@ -567,7 +550,6 @@ export default class ChessRules { re_drawBoardElements() { const board = this.getSvgChessboard(); - const oppCol = C.GetOppCol(this.playerColor); const container = document.getElementById(this.containerId); const rc = container.getBoundingClientRect(); let chessboard = container.querySelector(".chessboard"); @@ -605,7 +587,7 @@ export default class ChessRules { chessboard.style.top = spaceTop + "px"; // Give sizes instead of recomputing them, // because chessboard might not be drawn yet. - this.setupPieces({ + this.setupVisualPieces({ width: cbWidth, height: cbHeight, x: spaceLeft, @@ -615,11 +597,18 @@ export default class ChessRules { // Get SVG board (background, no pieces) getSvgChessboard() { - const flipped = (this.playerColor == 'b'); let board = ` `; + board += this.getBaseSvgChessboard(); + board += ""; + return board; + } + + getBaseSvgChessboard() { + let board = ""; + const flipped = this.flippedBoard; for (let i=0; i < this.size.x; i++) { for (let j=0; j < this.size.y; j++) { if (!this.onBoard(i, j)) @@ -641,11 +630,10 @@ export default class ChessRules { />`; } } - board += ""; return board; } - setupPieces(r) { + setupVisualPieces(r) { let chessboard = document.getElementById(this.containerId).querySelector(".chessboard"); if (!r) @@ -678,7 +666,11 @@ export default class ChessRules { else this[arrName] = ArrayFun.init(this.size.x, this.size.y, null); if (arrName == "d_pieces") - this.marks.forEach(([i, j]) => addPiece(i, j, arrName, "mark")); + this.marks.forEach((m) => { + const formattedSquare = C.SquareFromUsual(m); + const mCoords = C.SquareToCoords(formattedSquare); + addPiece(mCoords.x, mCoords.y, arrName, "mark"); + }); }; if (this.marks) conditionalReset("d_pieces"); @@ -689,7 +681,7 @@ export default class ChessRules { const color = this.getColor(i, j); const piece = this.getPiece(i, j); addPiece(i, j, "g_pieces", this.pieces(color, i, j)[piece]["class"]); - this.g_pieces[i][j].classList.add(C.GetColorClass(color)); + this.g_pieces[i][j].classList.add(V.GetColorClass(color)); if (this.enlightened && !this.enlightened[i][j]) this.g_pieces[i][j].classList.add("hidden"); } @@ -756,7 +748,7 @@ export default class ChessRules { rcontainer.appendChild(r_cell); let piece = document.createElement("piece"); C.AddClass_es(piece, this.pieces(c, c, p)[p]["class"]); - piece.classList.add(C.GetColorClass(c)); + piece.classList.add(V.GetColorClass(c)); piece.style.width = "100%"; piece.style.height = "100%"; this.r_pieces[c][p] = piece; @@ -878,9 +870,10 @@ export default class ChessRules { y = (this.playerColor == i ? y = r.height + 5 : - 5 - rsqSize); } else { - const sqSize = r.width / this.size.y; - const flipped = (this.playerColor == 'b'); - x = (flipped ? this.size.y - 1 - j : j) * sqSize; + const sqSize = r.width / Math.max(this.size.x, this.size.y); + const flipped = this.flippedBoard; + x = (flipped ? this.size.y - 1 - j : j) * sqSize + + Math.abs(this.size.x - this.size.y) * sqSize / 2; y = (flipped ? this.size.x - 1 - i : i) * sqSize; } return [r.x + x, r.y + y]; @@ -1013,7 +1006,7 @@ export default class ChessRules { // TODO: onpointerdown/move/up ? See reveal.js /controllers/touch.js } - // NOTE: not called if isDiagram, or genFenOnly + // NOTE: not called if isDiagram removeListeners() { let container = document.getElementById(this.containerId); this.windowResizeObs.unobserve(container); @@ -1065,7 +1058,7 @@ export default class ChessRules { const cdisp = moves[i].choice || moves[i].appear[0].p; C.AddClass_es(piece, this.pieces(color, moves[i].end.x, moves[i].end.y)[cdisp]["class"]); - piece.classList.add(C.GetColorClass(color)); + piece.classList.add(V.GetColorClass(color)); piece.style.width = "100%"; piece.style.height = "100%"; choice.appendChild(piece); @@ -1113,9 +1106,10 @@ export default class ChessRules { // Include square of the en-passant capturing square: enlightEnpassant() { // NOTE: shortcut, pawn has only one attack type, doesn't depend on square - const steps = this.pieces(this.playerColor)["p"].attack[0].steps; + // TODO: (0, 0) is wrong, would need to place an attacker here... + const steps = this.pieces(this.playerColor, 0, 0)["p"].attack[0].steps; for (let step of steps) { - const x = this.epSquare.x - step[0], + const x = this.epSquare.x - step[0], //NOTE: epSquare.x not on edge y = this.getY(this.epSquare.y - step[1]); if ( this.onBoard(x, y) && @@ -1189,7 +1183,7 @@ export default class ChessRules { getPieceType(x, y, p) { if (!p) p = this.getPiece(x, y); - return this.pieces()[p].moveas || p; + return this.pieces(this.getColor(x, y), x, y)[p].moveas || p; } isKing(x, y, p) { @@ -1200,8 +1194,12 @@ export default class ChessRules { return !!C.CannibalKings[p]; } - // Get opponent color - static GetOppCol(color) { + static GetOppTurn(color) { + return (color == 'w' ? 'b' : 'w'); + } + + // Get opponent color(s): may differ from turn (e.g. Checkered) + getOppCols(color) { return (color == "w" ? "b" : "w"); } @@ -1219,17 +1217,22 @@ export default class ChessRules { //////////////////////// // PIECES SPECIFICATIONS + getPawnShift(color) { + return (color == "w" ? -1 : 1); + } + isPawnInitRank(x, color) { + return (color == 'w' && x >= 6) || (color == 'b' && x <= 1); + } + pieces(color, x, y) { - const pawnShift = (color == "w" ? -1 : 1); - // NOTE: jump 2 squares from first rank (pawns can be here sometimes) - const initRank = ((color == 'w' && x >= 6) || (color == 'b' && x <= 1)); + const pawnShift = this.getPawnShift(color || 'w'); return { 'p': { "class": "pawn", moves: [ { steps: [[pawnShift, 0]], - range: (initRank ? 2 : 1) + range: (this.isPawnInitRank(x, color) ? 2 : 1) } ], attack: [ @@ -1241,13 +1244,13 @@ export default class ChessRules { }, 'r': { "class": "rook", - moves: [ + both: [ {steps: [[0, 1], [0, -1], [1, 0], [-1, 0]]} ] }, 'n': { "class": "knight", - moves: [ + both: [ { steps: [ [1, 2], [1, -2], [-1, 2], [-1, -2], @@ -1259,13 +1262,13 @@ export default class ChessRules { }, 'b': { "class": "bishop", - moves: [ + both: [ {steps: [[1, 1], [1, -1], [-1, 1], [-1, -1]]} ] }, 'q': { "class": "queen", - moves: [ + both: [ { steps: [ [0, 1], [0, -1], [1, 0], [-1, 0], @@ -1276,7 +1279,7 @@ export default class ChessRules { }, 'k': { "class": "king", - moves: [ + both: [ { steps: [ [0, 1], [0, -1], [1, 0], [-1, 0], @@ -1330,6 +1333,17 @@ export default class ChessRules { res += this.size.y; return res; } + // Circular? + getX(x) { + return x; //generally, no + } + + increment([x, y], step) { + return [ + this.getX(x + step[0]), + this.getY(y + step[1]) + ]; + } getSegments(curSeg, segStart, segEnd) { if (curSeg.length == 0) @@ -1341,12 +1355,19 @@ export default class ChessRules { getStepSpec(color, x, y, piece) { let pieceType = piece; - const allSpecs = this.pieces(color, x, y); + let allSpecs = this.pieces(color, x, y); if (!piece) pieceType = this.getPieceType(x, y); else if (allSpecs[piece].moveas) pieceType = allSpecs[piece].moveas; - return allSpecs[pieceType]; + let res = allSpecs[pieceType]; + if (!res["both"]) + res.both = []; + if (!res["moves"]) + res.moves = []; + if (!res["attack"]) + res.attack = []; + return res; } // Can thing on square1 capture thing on square2? @@ -1354,6 +1375,11 @@ export default class ChessRules { return this.getColor(x1, y1) !== this.getColor(x2, y2); } + // Teleport & Recycle. Assumption: color(x1,y1) == color(x2,y2) + canSelfTake([x1, y1], [x2, y2]) { + return !this.isKing(x2, y2); + } + canStepOver(i, j, p) { // In some variants, objects on boards don't stop movement (Chakart) return this.board[i][j] == ""; @@ -1377,23 +1403,22 @@ export default class ChessRules { if (!this.options["madrasi"]) return false; const color = this.getColor(x, y); - const oppCol = C.GetOppCol(color); + const oppCols = this.getOppCols(color); const piece = this.getPieceType(x, y); const stepSpec = this.getStepSpec(color, x, y, piece); - const attacks = stepSpec.attack || stepSpec.moves; + const attacks = stepSpec.both.concat(stepSpec.attack); for (let a of attacks) { outerLoop: for (let step of a.steps) { - let [i, j] = [x + step[0], y + step[1]]; - let stepCounter = 1; + let [i, j] = this.increment([x, y], step); + let stepCounter = 0; while (this.onBoard(i, j) && this.board[i][j] == "") { if (a.range <= stepCounter++) continue outerLoop; - i += step[0]; - j = this.getY(j + step[1]); + [i, j] = this.increment([i, j], step); } if ( this.onBoard(i, j) && - this.getColor(i, j) == oppCol && + oppCols.includes(this.getColor(i, j)) && this.getPieceType(i, j) == piece ) { return true; @@ -1405,7 +1430,6 @@ export default class ChessRules { // Stop at the first capture found atLeastOneCapture(color) { - const oppCol = C.GetOppCol(color); const allowed = (sq1, sq2) => { return ( // NOTE: canTake is reversed for Zen. @@ -1426,7 +1450,6 @@ export default class ChessRules { { attackOnly: true, one: true, - segments: this.options["cylinder"] }, allowed ) @@ -1437,10 +1460,7 @@ export default class ChessRules { this.options["zen"] && this.findCapturesOn( [i, j], - { - one: true, - segments: this.options["cylinder"] - }, + {one: true}, allowed ) ) @@ -1517,6 +1537,7 @@ export default class ChessRules { } // All possible moves from selected square + // TODO: generalize usage if arg "color" (e.g. Checkered) getPotentialMovesFrom([x, y], color) { if (this.subTurnTeleport == 2) return []; @@ -1528,12 +1549,8 @@ export default class ChessRules { let moves = this.getPotentialMovesOf(piece, [x, y]); if (piece == "p" && this.hasEnpassant && this.epSquare) Array.prototype.push.apply(moves, this.getEnpassantCaptures([x, y])); - if ( - this.isKing(0, 0, piece) && this.hasCastle && - this.castleFlags[color || this.turn].some(v => v < this.size.y) - ) { + if (this.isKing(0, 0, piece) && this.hasCastle) Array.prototype.push.apply(moves, this.getCastleMoves([x, y])); - } return this.postProcessPotentialMoves(moves); } @@ -1541,19 +1558,19 @@ export default class ChessRules { if (moves.length == 0) return []; const color = this.getColor(moves[0].start.x, moves[0].start.y); - const oppCol = C.GetOppCol(color); + const oppCols = this.getOppCols(color); if (this.options["capture"] && this.atLeastOneCapture(color)) - moves = this.capturePostProcess(moves, oppCol); + moves = this.capturePostProcess(moves, oppCols); if (this.options["atomic"]) - moves = this.atomicPostProcess(moves, color, oppCol); + moves = this.atomicPostProcess(moves, color, oppCols); if ( moves.length > 0 && this.getPieceType(moves[0].start.x, moves[0].start.y) == "p" ) { - moves = this.pawnPostProcess(moves, color, oppCol); + moves = this.pawnPostProcess(moves, color, oppCols); } if (this.options["cannibal"] && this.options["rifle"]) @@ -1563,22 +1580,22 @@ export default class ChessRules { return moves; } - capturePostProcess(moves, oppCol) { + capturePostProcess(moves, oppCols) { // Filter out non-capturing moves (not using m.vanish because of // self captures of Recycle and Teleport). return moves.filter(m => { return ( this.board[m.end.x][m.end.y] != "" && - this.getColor(m.end.x, m.end.y) == oppCol + oppCols.includes(this.getColor(m.end.x, m.end.y)) ); }); } - atomicPostProcess(moves, color, oppCol) { + atomicPostProcess(moves, color, oppCols) { moves.forEach(m => { if ( this.board[m.end.x][m.end.y] != "" && - this.getColor(m.end.x, m.end.y) == oppCol + oppCols.includes(this.getColor(m.end.x, m.end.y)) ) { // Explosion! let steps = [ @@ -1598,8 +1615,7 @@ export default class ChessRules { vanish: [] }); for (let step of steps) { - let x = m.end.x + step[0]; - let y = this.getY(m.end.y + step[1]); + let [x, y] = this.increment([m.end.x, m.end.y], step); if ( this.onBoard(x, y) && this.board[x][y] != "" && @@ -1633,7 +1649,7 @@ export default class ChessRules { return moves; } - pawnPostProcess(moves, color, oppCol) { + pawnPostProcess(moves, color, oppCols) { let moreMoves = []; const lastRank = (color == "w" ? 0 : this.size.x - 1); const initPiece = this.getPiece(moves[0].start.x, moves[0].start.y); @@ -1654,7 +1670,7 @@ export default class ChessRules { if ( this.options["cannibal"] && this.board[x2][y2] != "" && - this.getColor(x2, y2) == oppCol + oppCols.includes(this.getColor(x2, y2)) ) { finalPieces = [this.getPieceType(x2, y2)]; } @@ -1687,7 +1703,7 @@ export default class ChessRules { m.appear[0].p = this.pawnPromotions[0]; for (let i=1; i { @@ -1720,7 +1735,6 @@ export default class ChessRules { [x, y], { moveOnly: !!stepSpec.attack || this.options["zen"], - segments: this.options["cylinder"], stepSpec: stepSpec } ); @@ -1733,32 +1747,31 @@ export default class ChessRules { !this.isKing(i1, j1) && this.canTake([i2, j2], [i1, j1]) ); // Technical step: segments (if any) are reversed - if (this.options["cylinder"]) { - zenCaptures.forEach(z => { + zenCaptures.forEach(z => { + if (!!z.segments) z.segments = z.segments.reverse().map(s => s.reverse()) - }); - } + }); Array.prototype.push.apply(squares, zenCaptures); } - if ( - this.options["recycle"] || - (this.options["teleport"] && this.subTurnTeleport == 1) - ) { + if (this.hasSelfCaptures) { const selfCaptures = this.findDestSquares( [x, y], { attackOnly: true, - segments: this.options["cylinder"], stepSpec: stepSpec }, - ([i1, j1], [i2, j2]) => - this.getColor(i2, j2) == color && !this.isKing(i2, j2) + ([i1, j1], [i2, j2]) => { + return ( + this.getColor(i2, j2) == color && + this.canSelfTake([i1, j1], [i2, j2]) + ); + } ); Array.prototype.push.apply(squares, selfCaptures); } return squares.map(s => { let mv = this.getBasicMove([x, y], s.sq); - if (this.options["cylinder"] && s.segments.length >= 2) + if (!!s.segments) mv.segments = s.segments; return mv; }); @@ -1769,23 +1782,21 @@ export default class ChessRules { allowed = (sq1, sq2) => this.canTake(sq1, sq2); const apparentPiece = this.getPiece(x, y); //how it looks let res = []; - // Next 3 for Cylinder mode: (unused if !o.segments) + // Next 3 for Cylinder mode or circular (useless otherwise) let explored = {}; let segments = []; let segStart = []; const addSquare = ([i, j]) => { let elt = {sq: [i, j]}; - if (o.segments) - elt.segments = this.getSegments(segments, segStart, end); + if (segments.length >= 1) + elt.segments = this.getSegments(segments, segStart, [i, j]); res.push(elt); }; - const exploreSteps = (stepArray) => { + const exploreSteps = (stepArray, mode) => { for (let s of stepArray) { outerLoop: for (let step of s.steps) { - if (o.segments) { - segments = []; - segStart = [x, y]; - } + segments = []; + segStart = [x, y]; let [i, j] = [x, y]; let stepCounter = 0; while ( @@ -1798,9 +1809,9 @@ export default class ChessRules { !o.captureTarget || (o.captureTarget[0] == i && o.captureTarget[1] == j) ) { - if (o.one && !o.attackOnly) + if (o.one && mode != "attack") return true; - if (!o.attackOnly) + if (mode != "attack") addSquare(!o.captureTarget ? [i, j] : [x, y]); if (o.captureTarget) return res[0]; @@ -1809,10 +1820,12 @@ export default class ChessRules { if (s.range <= stepCounter++) continue outerLoop; const oldIJ = [i, j]; - i += step[0]; - j = this.getY(j + step[1]); - if (o.segments && Math.abs(j - oldIJ[1]) > 1) { - // Boundary between segments (cylinder mode) + [i, j] = this.increment([i, j], step); + if ( + Math.abs(i - oldIJ[0]) != Math.abs(step[0]) || + Math.abs(j - oldIJ[1]) != Math.abs(step[1]) + ) { + // Boundary between segments (cylinder or circular mode) segments.push([[segStart[0], segStart[1]], oldIJ]); segStart = [i, j]; } @@ -1823,9 +1836,9 @@ export default class ChessRules { if (!explored[i + "." + j]) { explored[i + "." + j] = true; if (allowed([x, y], [i, j])) { - if (o.one && !o.moveOnly) + if (o.one && mode != "moves") return true; - if (!o.moveOnly) + if (mode != "moves") addSquare(!o.captureTarget ? [i, j] : [x, y]); if ( o.captureTarget && @@ -1840,17 +1853,15 @@ export default class ChessRules { return undefined; //default, but let's explicit it }; if (o.captureTarget) - return exploreSteps(o.captureSteps) + return exploreSteps(o.captureSteps, "attack"); else { const stepSpec = o.stepSpec || this.getStepSpec(this.getColor(x, y), x, y); let outOne = false; - if (!o.attackOnly || !stepSpec.attack) - outOne = exploreSteps(stepSpec.moves); - if (!outOne && !o.moveOnly && !!stepSpec.attack) { - o.attackOnly = true; //ok because o is always a temporary object - outOne = exploreSteps(stepSpec.attack); - } + if (!o.attackOnly) + outOne = exploreSteps(stepSpec.both.concat(stepSpec.moves), "moves"); + if (!outOne && !o.moveOnly) + outOne = exploreSteps(stepSpec.both.concat(stepSpec.attack), "attack"); return (o.one ? outOne : res); } } @@ -1858,7 +1869,7 @@ export default class ChessRules { // Search for enemy (or not) pieces attacking [x, y] findCapturesOn([x, y], o, allowed) { if (!o.byCol) - o.byCol = [C.GetOppCol(this.getColor(x, y) || this.turn)]; + o.byCol = this.getOppCols(this.getColor(x, y) || this.turn); let res = []; for (let i=0; i= this.size.y) + if (castleFlags[castleSide] >= this.size.y) continue; // If this code is reached, rook and king are on initial position // NOTE: in some variants this is not a rook - const rookPos = this.castleFlags[c][castleSide]; + const rookPos = castleFlags[castleSide]; const castlingPiece = this.getPiece(x, rookPos); if ( this.board[x][rookPos] == "" || @@ -2075,7 +2084,7 @@ export default class ChessRules { // will be executed in filterValid() later. ( i != finalSquares[castleSide][0] && - this.underCheck([x, i], oppCol) + this.underCheck([[x, i]], oppCols) ) || ( @@ -2145,8 +2154,8 @@ export default class ChessRules { //////////////////// // MOVES VALIDATION - // Is piece (or square) at given position attacked by "oppCol" ? - underAttack([x, y], oppCol) { + // Is piece (or square) at given position attacked by "oppCol(s)" ? + underAttack([x, y], oppCols) { // An empty square is considered as king, // since it's used only in getCastleMoves (TODO?) const king = this.board[x][y] == "" || this.isKing(x, y); @@ -2156,8 +2165,7 @@ export default class ChessRules { this.findCapturesOn( [x, y], { - byCol: [oppCol], - segments: this.options["cylinder"], + byCol: oppCols, one: true } ) @@ -2169,22 +2177,19 @@ export default class ChessRules { [x, y], { attackOnly: true, - segments: this.options["cylinder"], one: true }, - ([i1, j1], [i2, j2]) => this.getColor(i2, j2) == oppCol + ([i1, j1], [i2, j2]) => oppCols.includes(this.getColor(i2, j2)) ) ) ); } // Argument is (very generally) an array of squares (= arrays) - underCheck(square_s, oppCol) { + underCheck(square_s, oppCols) { if (this.options["taking"] || this.options["dark"]) return false; - if (!Array.isArray(square_s[0])) - square_s = [square_s]; - return square_s.some(sq => this.underAttack(sq, oppCol)); + return square_s.some(sq => this.underAttack(sq, oppCols)); } // Scan board for king(s) @@ -2199,42 +2204,48 @@ export default class ChessRules { return res; } + // cb: callback returning a boolean (false if king missing) + trackKingWrap(move, kingPos, cb) { + if (move.appear.length == 0 && move.vanish.length == 0) + return true; + const color = + (move.vanish.length > 0 ? move.vanish[0].c : move.appear[0].c); + let newKingPP = null, + sqIdx = 0, + res = true; //a priori valid + const oldKingPP = + move.vanish.find(v => this.isKing(0, 0, v.p) && v.c == color); + if (oldKingPP) { + // Search king in appear array: + newKingPP = + move.appear.find(a => this.isKing(0, 0, a.p) && a.c == color); + if (newKingPP) { + sqIdx = kingPos.findIndex(kp => + kp[0] == oldKingPP.x && kp[1] == oldKingPP.y); + kingPos[sqIdx] = [newKingPP.x, newKingPP.y]; + } + else + res = false; //king vanished + } + res &&= cb(kingPos); + if (oldKingPP && newKingPP) + kingPos[sqIdx] = [oldKingPP.x, oldKingPP.y]; + return res; + } + // 'color' arg because some variants (e.g. Refusal) check opponent moves filterValid(moves, color) { if (!color) color = this.turn; - const oppCol = C.GetOppCol(color); + const oppCols = this.getOppCols(color); let kingPos = this.searchKingPos(color); - let filtered = {}; //avoid re-checking similar moves (promotions...) return moves.filter(m => { - const key = m.start.x + m.start.y + '.' + m.end.x + m.end.y; - if (!filtered[key]) { - this.playOnBoard(m); - let newKingPP = null, - sqIdx = 0, - res = true; //a priori valid - const oldKingPP = - m.vanish.find(v => this.isKing(0, 0, v.p) && v.c == color); - if (oldKingPP) { - // Search king in appear array: - newKingPP = - m.appear.find(a => this.isKing(0, 0, a.p) && a.c == color); - if (newKingPP) { - sqIdx = kingPos.findIndex(kp => - kp[0] == oldKingPP.x && kp[1] == oldKingPP.y); - kingPos[sqIdx] = [newKingPP.x, newKingPP.y]; - } - else - res = false; //king vanished - } - res &&= !this.underCheck(kingPos, oppCol); - if (oldKingPP && newKingPP) - kingPos[sqIdx] = [oldKingPP.x, oldKingPP.y]; - this.undoOnBoard(m); - filtered[key] = res; - return res; - } - return filtered[key]; + this.playOnBoard(m); + const res = this.trackKingWrap(m, kingPos, (kp) => { + return !this.underCheck(kp, oppCols); + }); + this.undoOnBoard(m); + return res; }); } @@ -2256,11 +2267,20 @@ export default class ChessRules { this.board[psq.x][psq.y] = psq.c + psq.p; } - updateCastleFlags(move) { + // NOTE: arg "castleFlags" for Coregal or Twokings + updateCastleFlags(move, castleFlags, king) { + castleFlags = castleFlags || this.castleFlags; + // If flags already off, no need to re-check: + if ( + Object.values(castleFlags).every(cvals => + cvals.every(val => val >= this.size.y)) + ) { + return; + } // Update castling flags if start or arrive from/at rook/king locations move.appear.concat(move.vanish).forEach(psq => { - if (this.isKing(0, 0, psq.p)) - this.castleFlags[psq.c] = [this.size.y, this.size.y]; + if ((king && psq.p == king) || (!king && this.isKing(0, 0, psq.p))) + castleFlags[psq.c] = [this.size.y, this.size.y]; // NOTE: not "else if" because king can capture enemy rook... let c = ""; if (psq.x == 0) @@ -2268,28 +2288,17 @@ export default class ChessRules { else if (psq.x == this.size.x - 1) c = "w"; if (c != "") { - const fidx = this.castleFlags[c].findIndex(f => f == psq.y); + const fidx = castleFlags[c].findIndex(f => f == psq.y); if (fidx >= 0) - this.castleFlags[c][fidx] = this.size.y; + castleFlags[c][fidx] = this.size.y; } }); } prePlay(move) { - if ( - this.hasCastle && - // If flags already off, no need to re-check: - Object.values(this.castleFlags).some(cvals => - cvals.some(val => val < this.size.y)) - ) { + if (this.hasCastle) this.updateCastleFlags(move); - } if (this.options["crazyhouse"]) { - move.vanish.forEach(v => { - const square = C.CoordsToSquare({x: v.x, y: v.y}); - if (this.ispawn[square]) - delete this.ispawn[square]; - }); if (move.appear.length > 0 && move.vanish.length > 0) { // Assumption: something is moving const initSquare = C.CoordsToSquare(move.start); @@ -2308,6 +2317,11 @@ export default class ChessRules { delete this.ispawn[destSquare]; } } + move.vanish.forEach(v => { + const square = C.CoordsToSquare({x: v.x, y: v.y}); + if (this.ispawn[square]) + delete this.ispawn[square]; + }); } const minSize = Math.min(move.appear.length, move.vanish.length); if ( @@ -2350,10 +2364,11 @@ export default class ChessRules { if (this.options["teleport"]) { if ( this.subTurnTeleport == 1 && - move.vanish.length > move.appear.length && + move.vanish.length == 2 && + move.appear.length == 1 && move.vanish[1].c == this.turn ) { - const v = move.vanish[move.vanish.length - 1]; + const v = move.vanish[1]; this.captured = {x: v.x, y: v.y, c: v.c, p: v.p}; this.subTurnTeleport = 2; return; @@ -2366,7 +2381,7 @@ export default class ChessRules { tryChangeTurn(move) { if (this.isLastMove(move)) { - this.turn = C.GetOppCol(this.turn); + this.turn = C.GetOppTurn(this.turn); this.movesCount++; this.subTurn = 1; } @@ -2378,8 +2393,8 @@ export default class ChessRules { if (move.next) return false; const color = this.turn; - const oppKingPos = this.searchKingPos(C.GetOppCol(color)); - if (oppKingPos.length == 0 || this.underCheck(oppKingPos, color)) + const oppKingPos = this.searchKingPos(C.GetOppTurn(color)); + if (oppKingPos.length == 0 || this.underCheck(oppKingPos, [color])) return true; return ( ( @@ -2408,7 +2423,7 @@ export default class ChessRules { if (this.board[i][j] != "" && this.getColor(i, j) == color) { // NOTE: in fact searching for all potential moves from i,j. // I don't believe this is an issue, for now at least. - const moves = this.getPotentialMovesFrom([i, j]); + const moves = this.getPotentialMovesFrom([i, j], color); if (moves.some(m => this.filterValid([m]).length >= 1)) return true; } @@ -2430,30 +2445,30 @@ export default class ChessRules { // Shortcut in case the score was computed before: if (move.result) return move.result; - const color = this.turn; - const oppCol = C.GetOppCol(color); + const oppTurn = C.GetOppTurn(this.turn); const kingPos = { - [color]: this.searchKingPos(color), - [oppCol]: this.searchKingPos(oppCol) + w: this.searchKingPos('w'), + b: this.searchKingPos('b') }; - if (kingPos[color].length == 0 && kingPos[oppCol].length == 0) + if (kingPos[this.turn].length == 0 && kingPos[oppTurn].length == 0) return "1/2"; - if (kingPos[color].length == 0) - return (color == "w" ? "0-1" : "1-0"); - if (kingPos[oppCol].length == 0) - return (color == "w" ? "1-0" : "0-1"); - if (this.atLeastOneMove(color)) + if (kingPos[this.turn].length == 0) + return (this.turn == "w" ? "0-1" : "1-0"); + if (kingPos[oppTurn].length == 0) + return (this.turn == "w" ? "1-0" : "0-1"); + if (this.atLeastOneMove(this.turn)) return "*"; // No valid move: stalemate or checkmate? - if (!this.underCheck(kingPos[color], oppCol)) + if (!this.underCheck(kingPos[this.turn], this.getOppCols(this.turn))) return "1/2"; // OK, checkmate - return (color == "w" ? "0-1" : "1-0"); + return (this.turn == "w" ? "0-1" : "1-0"); } playVisual(move, r) { move.vanish.forEach(v => { - this.g_pieces[v.x][v.y].remove(); + if (this.g_pieces[v.x][v.y]) //can be null (e.g. Apocalypse) + this.g_pieces[v.x][v.y].remove(); this.g_pieces[v.x][v.y] = null; }); let chessboard = @@ -2465,7 +2480,7 @@ export default class ChessRules { this.g_pieces[a.x][a.y] = document.createElement("piece"); C.AddClass_es(this.g_pieces[a.x][a.y], this.pieces(a.c, a.x, a.y)[a.p]["class"]); - this.g_pieces[a.x][a.y].classList.add(C.GetColorClass(a.c)); + this.g_pieces[a.x][a.y].classList.add(V.GetColorClass(a.c)); this.g_pieces[a.x][a.y].style.width = pieceWidth + "px"; this.g_pieces[a.x][a.y].style.height = pieceWidth + "px"; const [ip, jp] = this.getPixelPosition(a.x, a.y, r); @@ -2522,6 +2537,10 @@ export default class ChessRules { animateMoving(start, end, drag, segments, cb) { let initPiece = this.getDomPiece(start.x, start.y); + if (!initPiece) { //TODO: shouldn't occur! + cb(); + return; + } // NOTE: cloning often not required, but light enough, and simpler let movingPiece = initPiece.cloneNode(); initPiece.style.opacity = "0"; @@ -2542,8 +2561,8 @@ export default class ChessRules { C.RemoveClass_es(movingPiece, pieces[startCode]["class"]); C.AddClass_es(movingPiece, pieces[drag.p]["class"]); if (apparentColor != drag.c) { - movingPiece.classList.remove(C.GetColorClass(apparentColor)); - movingPiece.classList.add(C.GetColorClass(drag.c)); + movingPiece.classList.remove(V.GetColorClass(apparentColor)); + movingPiece.classList.add(V.GetColorClass(drag.c)); } } container.appendChild(movingPiece); @@ -2686,6 +2705,7 @@ export default class ChessRules { let container = document.getElementById(this.containerId); if (document.hidden) { document.onvisibilitychange = () => { + // TODO here: page reload ?! (some issues if tab changed...) document.onvisibilitychange = undefined; checkDisplayThenAnimate(700); };