- // If piece not in usual list, bishop or knight appears.
- getPotentialMovesFrom([x, y]) {
- if (this.movesCount <= 3) {
- // Setup stage
- const color = this.getColor(x, y);
- const firstRank = (color == 'w' ? 7 : 0);
- if (x != firstRank || V.AUGMENTED_PIECES.includes(this.board[x][y][1]))
- return [];
- const piece = this.getPiece(x, y);
- const move = new Move({
- appear: [
- new PiPo({ x: x, y: y, c: color, p: this.getAugmented(piece) })
- ],
- vanish: [
- new PiPo({ x: x, y: y, c: color, p: piece })
- ],
- start: { x: x, y: y },
- end: { x: x, y: y }
- });
- return [move];
- }
- let moves = super.getPotentialMovesFrom([x, y]);
- const initialPiece = this.getPiece(x, y);
- const color = this.turn;
- if (
- V.AUGMENTED_PIECES.includes(this.board[x][y][1]) &&
- ((color == 'w' && x == 7) || (color == "b" && x == 0))
- ) {
- const newPiece = this.getExtraPiece(this.board[x][y][1]);
- moves.forEach(m => {
- m.appear[0].p = initialPiece;
- m.appear.push(
- new PiPo({
- p: newPiece,
- c: color,
- x: x,
- y: y
- })
- );
- });
- }
- moves.forEach(m => {
- if (m.vanish.length <= 1) return;
- const [vx, vy] = [m.vanish[1].x, m.vanish[1].y];
- if (
- m.appear.length >= 2 && //3 if the king was also augmented
- m.vanish.length == 2 &&
- m.vanish[1].c == color &&
- V.AUGMENTED_PIECES.includes(this.board[vx][vy][1])
- ) {
- // Castle, rook is an "augmented piece"
- m.appear[1].p = V.ROOK;
- m.appear.push(
- new PiPo({
- p: this.getExtraPiece(this.board[vx][vy][1]),
- c: color,
- x: vx,
- y: vy
- })
- );
- }
- });
- return moves;
+ canIplay(side, [x, y]) {
+ if (this.movesCount >= 4) return super.canIplay(side, [x, y]);
+ return (
+ this.turn == side &&
+ (
+ (side == 'w' && x == 7) ||
+ (side == 'b' && x == 0)
+ )
+ );