From: Benjamin Auder Date: Tue, 4 Feb 2020 17:47:32 +0000 (+0100) Subject: Fix checkered variant X-Git-Url: https://git.auder.net/doc/html/css/%7B%7B?a=commitdiff_plain;h=03cff0f742307e1b9d6aa83a1fb84c7e8785dbe0;p=vchess.git Fix checkered variant --- diff --git a/client/src/variants/Checkered.js b/client/src/variants/Checkered.js index f8176cd3..586c88ee 100644 --- a/client/src/variants/Checkered.js +++ b/client/src/variants/Checkered.js @@ -1,6 +1,3 @@ -// TODO: to detect oppositeMoves, we need last move --> encoded in FEN -// + local moves stack (for AlphaBeta) + lastMove (in FEN) - import { ChessRules } from "@/base_rules"; export const VariantRules = class CheckeredRules extends ChessRules @@ -49,6 +46,35 @@ export const VariantRules = class CheckeredRules extends ChessRules return ChessRules.PIECES.concat(['s','t','u','c','o']); } + setOtherVariables(fen) + { + super.setOtherVariables(fen); + // Local stack of non-capturing checkered moves: + this.cmoves = []; + const cmove = fen.split(" ")[5]; + if (cmove == "-") + this.cmoves.push(null); + else + { + this.cmoves.push({ + start: ChessRules.SquareToCoords(cmove.substr(0,2)), + end: ChessRules.SquareToCoords(cmove.substr(2)), + }); + } + } + + static IsGoodFen(fen) + { + if (!ChessRules.IsGoodFen(fen)) + return false; + const fenParts = fen.split(" "); + if (fenParts.length != 6) + return false; + if (fenParts[5] != "-" && !fenParts[5].match(/^([a-h][1-8]){2}$/)) + return false; + return true; + } + static IsGoodFlags(flags) { // 4 for castle + 16 for pawns @@ -84,6 +110,13 @@ export const VariantRules = class CheckeredRules extends ChessRules this.pawnFlags = flags[1]; } + getCmove(move) + { + if (move.appear[0].c == 'c' && move.vanish.length == 1) + return {start: move.start, end: move.end}; + return null; + } + canTake([x1,y1], [x2,y2]) { const color1 = this.getColor(x1,y1); @@ -139,12 +172,10 @@ export const VariantRules = class CheckeredRules extends ChessRules // Does m2 un-do m1 ? (to disallow undoing checkered moves) oppositeMoves(m1, m2) { - return m1.appear.length == 1 && m2.appear.length == 1 - && m1.vanish.length == 1 && m2.vanish.length == 1 + 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 - && m1.appear[0].c == m2.vanish[0].c && m1.appear[0].p == m2.vanish[0].p - && m1.vanish[0].c == m2.appear[0].c && m1.vanish[0].p == m2.appear[0].p; + && m1.start.y == m2.end.y && m1.end.y == m2.start.y); } filterValid(moves) @@ -153,8 +184,8 @@ export const VariantRules = class CheckeredRules extends ChessRules return []; const color = this.turn; return moves.filter(m => { - const L = this.moves.length; - if (L > 0 && this.oppositeMoves(this.moves[L-1], m)) + const L = this.cmoves.length; //at least 1: init from FEN + if (this.oppositeMoves(this.cmoves[L-1], m)) return false; this.play(m); const res = !this.underCheck(color); @@ -248,10 +279,28 @@ export const VariantRules = class CheckeredRules extends ChessRules static GenRandInitFen() { const randFen = ChessRules.GenRandInitFen(); - // Add 16 pawns flags: - return randFen.replace(" w 0 1111", " w 0 11111111111111111111"); + // Add 16 pawns flags + empty cmove: + return randFen.replace(" w 0 1111", " w 0 11111111111111111111 -"); } + static ParseFen(fen) + { + const fenParsed = ChessRules.ParseFen(fen); + return Object.assign({}, + ChessRules.ParseFen(fen), + {cmove: fen.split(" ")[5]}); + } + + getFen() + { + const L = this.cmoves.length; + const cmoveFen = (!this.cmoves[L-1] + ? "-" + : ChessRules.CoordsToSquare(this.cmoves[L-1].start) + + ChessRules.CoordsToSquare(this.cmoves[L-1].end)); + return super.getFen() + " " + cmoveFen; + } + getFlagsFen() { let fen = super.getFlagsFen(); @@ -264,6 +313,19 @@ export const VariantRules = class CheckeredRules extends ChessRules return fen; } + // TODO (design): this cmove update here or in (un)updateVariables ? + play(move) + { + this.cmoves.push( this.getCmove(move) ); + super.play(move); + } + + undo(move) + { + this.cmoves.pop(); + super.undo(move); + } + getNotation(move) { if (move.appear.length == 2)