From 55d3b31f34f6b29f089db5723caf552ebf091905 Mon Sep 17 00:00:00 2001 From: Benjamin Auder Date: Thu, 27 Oct 2022 15:50:19 +0200 Subject: [PATCH] Draft Checkered + fix getBoard and Capablanca chess --- base_rules.js | 6 +- package-lock.json | 12 +- variants.js | 2 +- variants/Capablanca/class.js | 7 +- variants/Checkered/class.js | 449 +++++++++++++++++++++++++++++++++++ 5 files changed, 465 insertions(+), 11 deletions(-) create mode 100644 variants/Checkered/class.js diff --git a/base_rules.js b/base_rules.js index 7dc134d..f9913c4 100644 --- a/base_rules.js +++ b/base_rules.js @@ -286,9 +286,9 @@ 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 { @@ -303,7 +303,7 @@ 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; diff --git a/package-lock.json b/package-lock.json index c06d32b..d553246 100644 --- a/package-lock.json +++ b/package-lock.json @@ -198,9 +198,9 @@ } }, "node_modules/ws": { - "version": "7.5.5", - "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.5.tgz", - "integrity": "sha512-BAkMFcAzl8as1G/hArkxOxq3G7pjUqQ3gzYbLL0/5zNkph70e+lCoxBGnm6AW1+/aiNeV4fnKqZ8m4GZewmH2w==", + "version": "7.5.9", + "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.9.tgz", + "integrity": "sha512-F+P9Jil7UiSKSkppIiD94dN07AwvFixvLIj1Og1Rl9GGMuNipJnV9JzjD6XuqmAeiswGvUmNLjr5cFuXwNS77Q==", "engines": { "node": ">=8.3.0" }, @@ -346,9 +346,9 @@ } }, "ws": { - "version": "7.5.5", - "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.5.tgz", - "integrity": "sha512-BAkMFcAzl8as1G/hArkxOxq3G7pjUqQ3gzYbLL0/5zNkph70e+lCoxBGnm6AW1+/aiNeV4fnKqZ8m4GZewmH2w==", + "version": "7.5.9", + "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.9.tgz", + "integrity": "sha512-F+P9Jil7UiSKSkppIiD94dN07AwvFixvLIj1Og1Rl9GGMuNipJnV9JzjD6XuqmAeiswGvUmNLjr5cFuXwNS77Q==", "requires": {} } } diff --git a/variants.js b/variants.js index ffe77ac..cd5e55a 100644 --- a/variants.js +++ b/variants.js @@ -23,7 +23,7 @@ const variants = [ {name: 'Bicolour', desc: 'Harassed kings'}, {name: 'Brotherhood', desc: 'Friendly pieces'}, {name: 'Cannibal', desc: 'Capture powers'}, -// {name: 'Capablanca', desc: 'Capablanca Chess', disp: 'Capablanca Chess'}, + {name: 'Capablanca', desc: 'Capablanca Chess', disp: 'Capablanca'}, {name: 'Capture', desc: 'Mandatory captures'}, {name: 'Chakart', desc: 'Capture the princess'}, // {name: 'Checkered', desc: 'Shared pieces'}, diff --git a/variants/Capablanca/class.js b/variants/Capablanca/class.js index 2fd1516..c141e1c 100644 --- a/variants/Capablanca/class.js +++ b/variants/Capablanca/class.js @@ -1,4 +1,5 @@ import ChessRules from "/base_rules.js"; +import {FenUtil} from "/utils/setupPieces.js"; export default class CapablancaRules extends ChessRules { @@ -47,7 +48,11 @@ export default class CapablancaRules extends ChessRules { } get size() { - return {x: 8, y: 10}; + return { + x: 8, + y: 10, + ratio: 1.25 + }; } genRandInitBaseFen() { diff --git a/variants/Checkered/class.js b/variants/Checkered/class.js new file mode 100644 index 0000000..6ef3353 --- /dev/null +++ b/variants/Checkered/class.js @@ -0,0 +1,449 @@ +import ChessRules from "/base_rules.js"; +import PiPo from "/utils/PiPo.js"; +import Move from "/utils/Move.js"; + +export default class CheckeredRules extends ChessRules { + + static get Options() { + return { + select: C.Options.select, + input: [ + { + label: "Allow switching", + variable: "withswitch", + type: "checkbox", + defaut: false + } + ], + // Game modifiers (using "elementary variants"). Default: false + styles: [ + "balance", + "capture", + "cylinder", + "doublemove", + "madrasi", + "progressive", + "recycle", + "teleport" + ] + }; + } + + static board2fen(b) { + const checkered_codes = { + p: "s", + q: "t", + r: "u", + b: "c", + n: "o" + }; + if (b[0] == "c") return checkered_codes[b[1]]; + return super.board2fen(b); + } + + static fen2board(f) { + // Tolerate upper-case versions of checkered pieces (why not?) + const checkered_pieces = { + s: "p", + S: "p", + t: "q", + T: "q", + u: "r", + U: "r", + c: "b", + C: "b", + o: "n", + O: "n" + }; + if (Object.keys(checkered_pieces).includes(f)) + return "c" + checkered_pieces[f]; + return super.fen2board(f); + } + + // TODO: pieces() + + setOtherVariables(fenParsed) { + super.setOtherVariables(fenParsed); + // Non-capturing last checkered move (if any) + const cmove = fenParsed.cmove; + if (cmove == "-") this.cmove = null; + else { + this.cmove = { + start: C.SquareToCoords(cmove.substr(0, 2)), + end: C.SquareToCoords(cmove.substr(2)) + }; + } + // Stage 1: as Checkered2. Stage 2: checkered pieces are autonomous + const stageInfo = fenParsed.stage; + this.stage = parseInt(stageInfo[0], 10); + this.canSwitch = (this.stage == 1 && stageInfo[1] != '-'); + this.sideCheckered = (this.stage == 2 ? stageInfo[1] : undefined); + } + + setFlags(fenflags) { + super.setFlags(fenflags); //castleFlags + this.pawnFlags = { + w: [...Array(8)], //pawns can move 2 squares? + b: [...Array(8)] + }; + const flags = fenflags.substr(4); //skip first 4 letters, for castle + for (let c of ["w", "b"]) { + for (let i = 0; i < 8; i++) + this.pawnFlags[c][i] = flags.charAt((c == "w" ? 0 : 8) + i) == "1"; + } + } + + aggregateFlags() { + return [this.castleFlags, this.pawnFlags]; + } + + disaggregateFlags(flags) { + this.castleFlags = flags[0]; + this.pawnFlags = flags[1]; + } + + getEpSquare(moveOrSquare) { + // At stage 2, all pawns can be captured en-passant + if ( + this.stage == 2 || + typeof moveOrSquare !== "object" || + (moveOrSquare.appear.length > 0 && moveOrSquare.appear[0].c != 'c') + ) + return super.getEpSquare(moveOrSquare); + // Checkered or switch move: no en-passant + return undefined; + } + + getCmove(move) { + // No checkered move to undo at stage 2: + if (this.stage == 1 && move.vanish.length == 1 && move.appear[0].c == "c") + return { start: move.start, end: move.end }; + return null; + } + + canTake([x1, y1], [x2, y2]) { + const color1 = this.getColor(x1, y1); + const color2 = this.getColor(x2, y2); + if (this.stage == 2) { + // Black & White <-- takes --> Checkered + const color1 = this.getColor(x1, y1); + const color2 = this.getColor(x2, y2); + return color1 != color2 && [color1, color2].includes('c'); + } + // Checkered aren't captured + return ( + color1 != color2 && + color2 != "c" && + (color1 != "c" || color2 != this.turn) + ); + } + + // TODO:::: + getPotentialMovesFrom([x, y], noswitch) { + let standardMoves = super.getPotentialMovesFrom([x, y]); + if (this.stage == 1) { + const color = this.turn; + // Post-processing: apply "checkerization" of standard moves + const lastRank = (color == "w" ? 0 : 7); + let moves = []; + // King is treated differently: it never turn checkered + if (this.getPiece(x, y) == V.KING) { + // If at least one checkered piece, allow switching: + if ( + this.canSwitch && !noswitch && + this.board.some(b => b.some(cell => cell[0] == 'c')) + ) { + const oppCol = V.GetOppCol(color); + moves.push( + new Move({ + start: { x: x, y: y }, + end: { x: this.kingPos[oppCol][0], y: this.kingPos[oppCol][1] }, + appear: [], + vanish: [] + }) + ); + } + return standardMoves.concat(moves); + } + standardMoves.forEach(m => { + if (m.vanish[0].p == V.PAWN) { + if ( + Math.abs(m.end.x - m.start.x) == 2 && + !this.pawnFlags[this.turn][m.start.y] + ) { + return; //skip forbidden 2-squares jumps + } + if ( + this.board[m.end.x][m.end.y] == V.EMPTY && + m.vanish.length == 2 && + this.getColor(m.start.x, m.start.y) == "c" + ) { + return; //checkered pawns cannot take en-passant + } + } + if (m.vanish.length == 1) + // No capture + moves.push(m); + else { + // A capture occured (m.vanish.length == 2) + m.appear[0].c = "c"; + moves.push(m); + if ( + // Avoid promotions (already treated): + m.appear[0].p != m.vanish[1].p && + (m.vanish[0].p != V.PAWN || m.end.x != lastRank) + ) { + // Add transformation into captured piece + let m2 = JSON.parse(JSON.stringify(m)); + m2.appear[0].p = m.vanish[1].p; + moves.push(m2); + } + } + }); + return moves; + } + return standardMoves; + } + + // TODO: merge this into pieces() method + getPotentialPawnMoves([x, y]) { + const color = this.getColor(x, y); + if (this.stage == 2) { + const saveTurn = this.turn; + if (this.sideCheckered == this.turn) { + // Cannot change PawnSpecs.bidirectional, so cheat a little: + this.turn = 'w'; + const wMoves = super.getPotentialPawnMoves([x, y]); + this.turn = 'b'; + const bMoves = super.getPotentialPawnMoves([x, y]); + this.turn = saveTurn; + return wMoves.concat(bMoves); + } + // Playing with both colors: + this.turn = color; + const moves = super.getPotentialPawnMoves([x, y]); + this.turn = saveTurn; + return moves; + } + let moves = super.getPotentialPawnMoves([x, y]); + // Post-process: set right color for checkered moves + if (color == 'c') { + moves.forEach(m => { + m.appear[0].c = 'c'; //may be done twice if capture + m.vanish[0].c = 'c'; + }); + } + return moves; + } + + canIplay(side, [x, y]) { + if (this.stage == 2) { + const color = this.getColor(x, y); + return ( + this.turn == this.sideCheckered + ? color == 'c' + : ['w', 'b'].includes(color) + ); + } + return side == this.turn && [side, "c"].includes(this.getColor(x, y)); + } + + // Does m2 un-do m1 ? (to disallow undoing checkered moves) + oppositeMoves(m1, m2) { + return ( + !!m1 && + m2.appear[0].c == "c" && + m2.appear.length == 1 && + m2.vanish.length == 1 && + m1.start.x == m2.end.x && + m1.end.x == m2.start.x && + m1.start.y == m2.end.y && + m1.end.y == m2.start.y + ); + } + + // TODO: adapt, merge + filterValid(moves) { + if (moves.length == 0) return []; + const color = this.turn; + const oppCol = V.GetOppCol(color); + const L = this.cmoves.length; //at least 1: init from FEN + const stage = this.stage; //may change if switch + return moves.filter(m => { + // Checkered cannot be under check (no king) + if (stage == 2 && this.sideCheckered == color) return true; + this.play(m); + let res = true; + if (stage == 1) { + if (m.appear.length == 0 && m.vanish.length == 0) { + // Special "switch" move: kings must not be attacked by checkered. + // Not checking for oppositeMoves here: checkered are autonomous + res = ( + !this.isAttacked(this.kingPos['w'], ['c']) && + !this.isAttacked(this.kingPos['b'], ['c']) && + this.getAllPotentialMoves().length > 0 + ); + } + else res = !this.oppositeMoves(this.cmoves[L - 1], m); + } + if (res && m.appear.length > 0) res = !this.underCheck(color); + // At stage 2, side with B & W can be undercheck with both kings: + if (res && stage == 2) res = !this.underCheck(oppCol); + this.undo(m); + return res; + }); + } + + atLeastOneMove() { + const color = this.turn; + const oppCol = V.GetOppCol(color); + for (let i = 0; i < V.size.x; i++) { + for (let j = 0; j < V.size.y; j++) { + const colIJ = this.getColor(i, j); + if ( + this.board[i][j] != V.EMPTY && + ( + (this.stage == 1 && colIJ != oppCol) || + (this.stage == 2 && + ( + (this.sideCheckered == color && colIJ == 'c') || + (this.sideCheckered != color && ['w', 'b'].includes(colIJ)) + ) + ) + ) + ) { + const moves = this.getPotentialMovesFrom([i, j], "noswitch"); + if (moves.length > 0) { + for (let k = 0; k < moves.length; k++) + if (this.filterValid([moves[k]]).length > 0) return true; + } + } + } + } + return false; + } + + // TODO: adapt + underCheck(color) { + if (this.stage == 1) + return this.isAttacked(this.kingPos[color], [V.GetOppCol(color), "c"]); + if (color == this.sideCheckered) return false; + return ( + this.isAttacked(this.kingPos['w'], ["c"]) || + this.isAttacked(this.kingPos['b'], ["c"]) + ); + } + + play(move) { + move.flags = JSON.stringify(this.aggregateFlags()); + this.epSquares.push(this.getEpSquare(move)); + V.PlayOnBoard(this.board, move); + if (move.appear.length > 0 || move.vanish.length > 0) + { + this.turn = V.GetOppCol(this.turn); + this.movesCount++; + } + this.postPlay(move); + } + + postPlay(move) { + if (move.appear.length == 0 && move.vanish.length == 0) { + this.stage = 2; + this.sideCheckered = this.turn; + } + else { + const c = move.vanish[0].c; + const piece = move.vanish[0].p; + if (piece == V.KING) { + this.kingPos[c][0] = move.appear[0].x; + this.kingPos[c][1] = move.appear[0].y; + } + super.updateCastleFlags(move, piece); + if ( + [1, 6].includes(move.start.x) && + move.vanish[0].p == V.PAWN && + Math.abs(move.end.x - move.start.x) == 2 + ) { + // This move turns off a 2-squares pawn flag + this.pawnFlags[move.start.x == 6 ? "w" : "b"][move.start.y] = false; + } + } + this.cmove = this.getCmove(move); + } + + getCurrentScore() { + const color = this.turn; + if (this.stage == 1) { + if (this.atLeastOneMove()) return "*"; + // Artifically change turn, for checkered pawns + this.turn = V.GetOppCol(this.turn); + const res = + this.isAttacked(this.kingPos[color], [V.GetOppCol(color), "c"]) + ? color == "w" + ? "0-1" + : "1-0" + : "1/2"; + this.turn = V.GetOppCol(this.turn); + return res; + } + // Stage == 2: + if (this.sideCheckered == this.turn) { + // Check if remaining checkered pieces: if none, I lost + if (this.board.some(b => b.some(cell => cell[0] == 'c'))) { + if (!this.atLeastOneMove()) return "1/2"; + return "*"; + } + return color == 'w' ? "0-1" : "1-0"; + } + if (this.atLeastOneMove()) return "*"; + let res = this.isAttacked(this.kingPos['w'], ["c"]); + if (!res) res = this.isAttacked(this.kingPos['b'], ["c"]); + if (res) return color == 'w' ? "0-1" : "1-0"; + return "1/2"; + } + + // TODO: adapt + static GenRandInitFen(options) { + const baseFen = ChessRules.GenRandInitFen(options); + return ( + // Add 16 pawns flags + empty cmove + stage == 1: + baseFen.slice(0, -2) + "1111111111111111 - - 1" + + (!options["switch"] ? '-' : "") + ); + } + { + cmove: fenParts[5], + stage: fenParts[6] + } + + getCmoveFen() { + const L = this.cmoves.length; + return ( + !this.cmoves[L - 1] + ? "-" + : ChessRules.CoordsToSquare(this.cmoves[L - 1].start) + + ChessRules.CoordsToSquare(this.cmoves[L - 1].end) + ); + } + + getStageFen() { + if (this.stage == 1) return "1" + (!this.canSwitch ? '-' : ""); + // Stage == 2: + return "2" + this.sideCheckered; + } + + getFen() { + return ( + super.getFen() + " " + this.getCmoveFen() + " " + this.getStageFen() + ); + } + + getFlagsFen() { + let fen = super.getFlagsFen(); + // Add pawns flags + for (let c of ["w", "b"]) + for (let i = 0; i < 8; i++) fen += (this.pawnFlags[c][i] ? "1" : "0"); + return fen; + } + +}; -- 2.44.0