}
}
+ 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)
+ )
+ );
+ }
+
+ hoverHighlight([x, y]) {
+ const c = this.turn;
+ return (
+ this.movesCount <= 3 &&
+ ((c == 'w' && x == 7) || (c == 'b' && x == 0))
+ );
+ }
+
+ onlyClick([x, y]) {
+ return (
+ this.movesCount <= 3 ||
+ // TODO: next line theoretically shouldn't be required...
+ (this.movesCount == 4 && this.getColor(x, y) != this.turn)
+ );
+ }
+
+ // Special case of move 1 = choose squares, knight first, then bishop
+ doClick(square) {
+ if (this.movesCount >= 4) return null;
+ const color = this.turn;
+ const [x, y] = [square[0], square[1]];
+ if ((color == 'w' && x != 7) || (color == 'b' && x != 0)) return null;
+ const selectedPiece = this.board[x][y][1];
+ // Prevent re-augmenting a chosen piece:
+ if (!ChessRules.PIECES.includes(selectedPiece)) return null;
+ return new Move({
+ appear: [
+ new PiPo({
+ x: x,
+ y: y,
+ c: color,
+ p: this.getAugmented(selectedPiece)
+ })
+ ],
+ vanish: [
+ new PiPo({
+ x: x,
+ y: y,
+ c: color,
+ p: selectedPiece
+ })
+ ],
+ start: { x: x, y: y },
+ end: { x: x, y: y }
+ });
+ }
+
// 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];
+ const move = this.doClick([x, y]);
+ return (!move ? [] : [move]);
}
let moves = super.getPotentialMovesFrom([x, y]);
const initialPiece = this.getPiece(x, y);
return moves;
}
- hoverHighlight([x, y]) {
- const c = this.turn;
- return (
- this.movesCount <= 3 &&
- ((c == 'w' && x == 7) || (c == 'b' && x == 0))
- );
- }
-
- // Special case of move 1 = choose squares, knight first, then bishop
- doClick(square) {
- if (this.movesCount >= 4) return null;
- const color = this.turn;
- const [x, y] = [square[0], square[1]];
- if ((color == 'w' && x != 7) || (color == 'b' && x != 0)) return null;
- const selectedPiece = this.board[x][y][1];
- return new Move({
- appear: [
- new PiPo({
- x: x,
- y: y,
- c: color,
- p: this.getAugmented(selectedPiece)
- })
- ],
- vanish: [
- new PiPo({
- x: x,
- y: y,
- c: color,
- p: selectedPiece
- })
- ],
- start: { x: x, y: y },
- end: { x: x, y: y }
- });
- }
-
postPlay(move) {
- if (this.movesCount > 4) super.postPlay(move);
+ if (this.movesCount > 4) {
+ let piece = move.vanish[0].p;
+ if (['j', 'l'].includes(piece)) piece = V.KING;
+ if (piece == V.KING)
+ this.kingPos[move.appear[0].c] = [move.appear[0].x, move.appear[0].y];
+ this.updateCastleFlags(move, piece);
+ }
}
postUndo(move) {
- if (this.movesCount >= 4) super.postUndo(move);
+ if (this.movesCount >= 4) {
+ if (['j', 'k', 'l'].includes(this.getPiece(move.start.x, move.start.y)))
+ this.kingPos[move.vanish[0].c] = [move.start.x, move.start.y];
+ }
}
evalPosition() {
if (
V.AUGMENTED_PIECES.includes(move.vanish[0].p) ||
(
+ move.appear.length >= 2 &&
move.vanish.length >= 2 &&
V.AUGMENTED_PIECES.includes(move.vanish[1].p)
)