X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=client%2Fsrc%2Fvariants%2FAlice.js;h=57de5683b4b22d01402c77832207f6fe48612832;hb=1be09254408b05e3c1dd43b34e4c06cebd50af72;hp=e193bbd2357c6520eb82e3d868544b2c9f631449;hpb=2c5d7b20742b802d9c47916915c1114bcfc9a9c3;p=vchess.git diff --git a/client/src/variants/Alice.js b/client/src/variants/Alice.js index e193bbd2..57de5683 100644 --- a/client/src/variants/Alice.js +++ b/client/src/variants/Alice.js @@ -34,6 +34,32 @@ export class AliceRules extends ChessRules { return (Object.keys(V.ALICE_PIECES).includes(b[1]) ? "Alice/" : "") + b; } + getEpSquare(moveOrSquare) { + if (!moveOrSquare) return undefined; + if (typeof moveOrSquare === "string") { + const square = moveOrSquare; + if (square == "-") return undefined; + return V.SquareToCoords(square); + } + // Argument is a move: + const move = moveOrSquare; + const s = move.start, + e = move.end; + if ( + s.y == e.y && + Math.abs(s.x - e.x) == 2 && + // Special conditions: a pawn can be on the other side + ['p','s'].includes(move.appear[0].p) && + ['p','s'].includes(move.vanish[0].p) + ) { + return { + x: (s.x + e.x) / 2, + y: s.y + }; + } + return undefined; //default + } + setOtherVariables(fen) { super.setOtherVariables(fen); const rows = V.ParseFen(fen).position.split("/"); @@ -165,6 +191,31 @@ export class AliceRules extends ChessRules { return res; } + getEnpassantCaptures([x, y], shiftX) { + const Lep = this.epSquares.length; + const epSquare = this.epSquares[Lep - 1]; //always at least one element + let enpassantMove = null; + if ( + !!epSquare && + epSquare.x == x + shiftX && + Math.abs(epSquare.y - y) == 1 + ) { + enpassantMove = this.getBasicMove([x, y], [epSquare.x, epSquare.y]); + // May capture in same world or different: + const capturedPiece = + this.board[x][epSquare.y] != V.EMPTY + ? this.getPiece(x, epSquare.y) + : ['p','s'][1 - "ps".indexOf(this.getPiece(x, y))]; + enpassantMove.vanish.push({ + x: x, + y: epSquare.y, + p: capturedPiece, + c: V.GetOppCol(this.turn) + }); + } + return !!enpassantMove ? [enpassantMove] : []; + } + filterValid(moves, sideBoard) { if (moves.length == 0) return []; if (!sideBoard) sideBoard = [this.getSideBoard(1), this.getSideBoard(2)]; @@ -235,7 +286,8 @@ export class AliceRules extends ChessRules { return res; } - getCheckSquares(color) { + getCheckSquares() { + const color = this.turn; const pieces = Object.keys(V.ALICE_CODES); const kp = this.kingPos[color]; const mirrorSide = pieces.includes(this.getPiece(kp[0], kp[1])) ? 1 : 2;