import { randInt } from "@/utils/alea";
export class HiddenqueenRules extends ChessRules {
+
// Analyse in Hiddenqueen mode makes no sense
static get CanAnalyze() {
return false;
return 't';
}
+ static get SomeHiddenMoves() {
+ return true;
+ }
+
static get PIECES() {
return ChessRules.PIECES.concat([V.HIDDEN_QUEEN]);
}
return b;
}
+ getEpSquare(moveOrSquare) {
+ if (!moveOrSquare) return undefined;
+ if (typeof moveOrSquare === "string") {
+ const square = moveOrSquare;
+ if (square == "-") return undefined;
+ return V.SquareToCoords(square);
+ }
+ const move = moveOrSquare;
+ const s = move.start,
+ e = move.end;
+ const color = move.vanish[0].c;
+ if (
+ s.y == e.y &&
+ Math.abs(s.x - e.x) == 2 &&
+ ((color == 'w' && s.x == 6) || (color == 'b' && s.x == 1)) &&
+ [V.PAWN, V.HIDDEN_QUEEN].includes(move.vanish[0].p)
+ ) {
+ return {
+ x: (s.x + e.x) / 2,
+ y: s.y
+ };
+ }
+ return undefined; //default
+ }
+
isValidPawnMove(move) {
const color = move.vanish[0].c;
const pawnShift = color == "w" ? -1 : 1;
return super.getPotentialMovesFrom([x, y]);
}
+ getEnpassantCaptures([x, y], shiftX) {
+ const Lep = this.epSquares.length;
+ const epSquare = this.epSquares[Lep - 1];
+ let enpassantMove = null;
+ if (
+ !!epSquare &&
+ epSquare.x == x + shiftX &&
+ Math.abs(epSquare.y - y) == 1
+ ) {
+ enpassantMove = this.getBasicMove([x, y], [epSquare.x, epSquare.y]);
+ enpassantMove.vanish.push({
+ x: x,
+ y: epSquare.y,
+ // Captured piece may be a hidden queen
+ p: this.board[x][epSquare.y][1],
+ c: this.getColor(x, epSquare.y)
+ });
+ }
+ return !!enpassantMove ? [enpassantMove] : [];
+ }
+
getPotentialPawnMoves([x, y]) {
const piece = this.getPiece(x, y);
const promotions =
this.kingPos[oppCol] = [move.vanish[1].x, move.vanish[1].y];
}
+ underCheck(color) {
+ if (this.kingPos[color][0] < 0) return false;
+ return super.underCheck(color);
+ }
+
getCurrentScore() {
const color = this.turn;
if (this.kingPos[color][0] < 0)
// King disappeared
- return color == "w" ? "0-1" : "1-0";
- return super.getCurrentScore();
+ return (color == "w" ? "0-1" : "1-0");
+ const oldSide = this.side;
+ this.side = color;
+ const res = super.getCurrentScore();
+ this.side = oldSide;
+ return res;
}
// Search is biased, so not really needed to explore deeply
}
getNotation(move) {
- const notation = super.getNotation(move);
- if (notation.charAt(0) == 'T')
- // Do not reveal hidden queens
- return notation.substr(1);
+ // Not using getPiece() method because it would transform HQ into pawn:
+ if (this.board[move.start.x][move.start.y].charAt(1) != V.HIDDEN_QUEEN)
+ return super.getNotation(move);
+ const finalSquare = V.CoordsToSquare(move.end);
+ if (move.appear[0].p == V.QUEEN) {
+ return (
+ "Q" +
+ (move.vanish.length > move.appear.length ? "x" : "") +
+ finalSquare
+ );
+ }
+ // Do not reveal hidden queens playing as pawns
+ let notation = "";
+ if (move.vanish.length == 2)
+ // Capture
+ notation = V.CoordToColumn(move.start.y) + "x" + finalSquare;
+ else notation = finalSquare;
return notation;
}
+
};