static get PIECES() {
return [
+ V.PAWN,
V.QUEEN,
V.KING,
V.IMMOBILIZER,
}
canTake([x1, y1], [x2, y2]) {
- return !this.isProtected([x2, y2]) && super.canTake([x1, y1], [x2, y2]);
+ return (
+ [V.QUEEN, V.KING].includes(this.getPiece(x1, y1)) &&
+ !this.isProtected([x2, y2]) &&
+ this.getColor(x1, y1) != this.getColor(x2, y2)
+ );
}
getPotentialMovesFrom([x, y]) {
}
}
- getSlideNJumpMoves([x, y], steps, oneStep) {
- const piece = this.getPiece(x, y);
- let moves = [];
- outerLoop: for (let step of steps) {
- let i = x + step[0];
- let j = y + step[1];
- while (V.OnBoard(i, j) && this.board[i][j] == V.EMPTY) {
- moves.push(this.getBasicMove([x, y], [i, j]));
- if (oneStep !== undefined) continue outerLoop;
- i += step[0];
- j += step[1];
- }
- // Only queen and king can take on occupied square:
- if (
- [V.KING, V.QUEEN].includes(piece) &&
- V.OnBoard(i, j) &&
- this.canTake([x, y], [i, j])
- ) {
- moves.push(this.getBasicMove([x, y], [i, j]));
- }
- }
- return moves;
- }
-
// "Cannon/grasshopper pawn"
getPotentialPawnMoves([x, y]) {
const c = this.turn;
getPotentialKingMoves(sq) {
const steps = V.steps[V.ROOK].concat(V.steps[V.BISHOP]);
- return this.getSlideNJumpMoves(sq, steps, "oneStep");
+ return this.getSlideNJumpMoves(sq, steps, 1);
}
// NOTE: not really captures, but let's keep the name
}
}
- static GenRandInitFen(randomness) {
- if (randomness == 0) {
+ static GenRandInitFen(options) {
+ if (options.randomness == 0) {
return (
"wlqksaui/pppppppp/8/8/8/8/PPPPPPPP/IUASKQLW w 0"
);
let pieces = { w: new Array(8), b: new Array(8) };
// Shuffle pieces on first and last rank
for (let c of ["w", "b"]) {
- if (c == 'b' && randomness == 1) {
+ if (c == 'b' && options.randomness == 1) {
pieces['b'] = pieces['w'];
break;
}