}
getPPpath(m, orientation) {
+ // If castle, show choices on m.appear[1]:
+ const index = (m.appear.length == 2 ? 1 : 0);
return (
this.getPpath(
- m.appear[0].c + m.appear[0].p,
+ m.appear[index].c + m.appear[index].p,
null,
null,
orientation
return "efbqkbnm/pppppppp/8/8/8/8/PPPPPPPP/EDBQKBNM w 0 ahah -";
const baseFen = ChessRules.GenRandInitFen(randomness);
- // Replace black rooks by lancers oriented south,
- // and white rooks by lancers oriented north:
- return baseFen.replace(/r/g, 'g').replace(/R/g, 'C');
+ // Replace rooks by lancers with expected orientation:
+ const firstBlackRook = baseFen.indexOf('r'),
+ lastBlackRook = baseFen.lastIndexOf('r'),
+ firstWhiteRook = baseFen.indexOf('R'),
+ lastWhiteRook = baseFen.lastIndexOf('R');
+ return (
+ baseFen.substring(0, firstBlackRook) + 'e' +
+ baseFen.substring(firstBlackRook + 1, lastBlackRook) + 'm' +
+ baseFen.substring(lastBlackRook + 1, firstWhiteRook) + 'E' +
+ baseFen.substring(firstWhiteRook + 1, lastWhiteRook) + 'M' +
+ baseFen.substring(lastWhiteRook + 1)
+ );
}
// Because of the lancers, getPiece() could be wrong:
return super.getPotentialMovesFrom([x, y]);
}
+ getPotentialPawnMoves([x, y]) {
+ const color = this.getColor(x, y);
+ let moves = [];
+ const [sizeX, sizeY] = [V.size.x, V.size.y];
+ let shiftX = (color == "w" ? -1 : 1);
+ const startRank = color == "w" ? sizeX - 2 : 1;
+ const lastRank = color == "w" ? 0 : sizeX - 1;
+
+ let finalPieces = [V.PAWN];
+ if (x + shiftX == lastRank) {
+ // Only allow direction facing inside board:
+ const allowedLancerDirs =
+ lastRank == 0
+ ? ['e', 'f', 'g', 'h', 'm']
+ : ['c', 'd', 'e', 'm', 'o'];
+ finalPieces = allowedLancerDirs.concat([V.KNIGHT, V.BISHOP, V.QUEEN]);
+ }
+ if (this.board[x + shiftX][y] == V.EMPTY) {
+ // One square forward
+ for (let piece of finalPieces) {
+ moves.push(
+ this.getBasicMove([x, y], [x + shiftX, y], {
+ c: color,
+ p: piece
+ })
+ );
+ }
+ if (x == startRank && this.board[x + 2 * shiftX][y] == V.EMPTY)
+ // Two squares jump
+ moves.push(this.getBasicMove([x, y], [x + 2 * shiftX, y]));
+ }
+ // Captures
+ for (let shiftY of [-1, 1]) {
+ if (
+ y + shiftY >= 0 &&
+ y + shiftY < sizeY &&
+ this.board[x + shiftX][y + shiftY] != V.EMPTY &&
+ this.canTake([x, y], [x + shiftX, y + shiftY])
+ ) {
+ for (let piece of finalPieces) {
+ moves.push(
+ this.getBasicMove([x, y], [x + shiftX, y + shiftY], {
+ c: color,
+ p: piece
+ })
+ );
+ }
+ }
+ }
+
+ // Add en-passant captures
+ Array.prototype.push.apply(
+ moves,
+ this.getEnpassantCaptures([x, y], shiftX)
+ );
+
+ return moves;
+ }
+
// Obtain all lancer moves in "step" direction
getPotentialLancerMoves_aux([x, y], step, tr) {
let moves = [];
return moves;
}
+ getCastleMoves([x, y]) {
+ const c = this.getColor(x, y);
+
+ // Castling ?
+ const oppCol = V.GetOppCol(c);
+ let moves = [];
+ let i = 0;
+ // King, then lancer:
+ const finalSquares = [ [2, 3], [V.size.y - 2, V.size.y - 3] ];
+ castlingCheck: for (
+ let castleSide = 0;
+ castleSide < 2;
+ castleSide++ //large, then small
+ ) {
+ if (this.castleFlags[c][castleSide] >= V.size.y) continue;
+ // If this code is reached, lancer and king are on initial position
+
+ const lancerPos = this.castleFlags[c][castleSide];
+ const castlingPiece = this.board[x][lancerPos].charAt(1);
+
+ // Nothing on the path of the king ? (and no checks)
+ const finDist = finalSquares[castleSide][0] - y;
+ let step = finDist / Math.max(1, Math.abs(finDist));
+ i = y;
+ do {
+ if (
+ (this.isAttacked([x, i], oppCol)) ||
+ (
+ this.board[x][i] != V.EMPTY &&
+ // NOTE: next check is enough, because of chessboard constraints
+ (this.getColor(x, i) != c || ![y, lancerPos].includes(i))
+ )
+ ) {
+ continue castlingCheck;
+ }
+ i += step;
+ } while (i != finalSquares[castleSide][0]);
+
+ // Nothing on final squares, except maybe king and castling lancer?
+ for (i = 0; i < 2; i++) {
+ if (
+ finalSquares[castleSide][i] != lancerPos &&
+ this.board[x][finalSquares[castleSide][i]] != V.EMPTY &&
+ (
+ finalSquares[castleSide][i] != y ||
+ this.getColor(x, finalSquares[castleSide][i]) != c
+ )
+ ) {
+ continue castlingCheck;
+ }
+ }
+
+ // If this code is reached, castle is valid
+ let allowedLancerDirs = [castlingPiece];
+ if (finalSquares[castleSide][1] != lancerPos) {
+ // It moved: allow reorientation
+ allowedLancerDirs =
+ x == 0
+ ? ['e', 'f', 'g', 'h', 'm']
+ : ['c', 'd', 'e', 'm', 'o'];
+ }
+ allowedLancerDirs.forEach(dir => {
+ moves.push(
+ new Move({
+ appear: [
+ new PiPo({
+ x: x,
+ y: finalSquares[castleSide][0],
+ p: V.KING,
+ c: c
+ }),
+ new PiPo({
+ x: x,
+ y: finalSquares[castleSide][1],
+ p: dir,
+ c: c
+ })
+ ],
+ vanish: [
+ new PiPo({ x: x, y: y, p: V.KING, c: c }),
+ new PiPo({ x: x, y: lancerPos, p: castlingPiece, c: c })
+ ],
+ end:
+ Math.abs(y - lancerPos) <= 2
+ ? { x: x, y: lancerPos }
+ : { x: x, y: y + 2 * (castleSide == 0 ? -1 : 1) }
+ })
+ );
+ });
+ }
+
+ return moves;
+ }
+
isAttacked(sq, color) {
return (
super.isAttacked(sq, color) ||
if (Object.keys(V.LANCER_DIRNAMES).includes(move.vanish[0].p))
// Lancer: add direction info
notation += "=" + V.LANCER_DIRNAMES[move.appear[0].p];
+ else if (move.appear.length == 2 && move.vanish[1].p != move.appear[1].p)
+ // Same after castle:
+ notation += "+L:" + V.LANCER_DIRNAMES[move.appear[1].p];
else if (
move.vanish[0].p == V.PAWN &&
Object.keys(V.LANCER_DIRNAMES).includes(move.appear[0].p)
projects / vchess.git / commitdiff