private static BitBoard makeWithoutFileH() {
BitBoard result = new BitBoard();
for (BoardSquare s : BoardSquare.values()) {
if (s.file() != 'h') {
result.set(s);
}
}
return result;
}
private static BitBoard makeInteriorSquares() {
BitBoard result = new BitBoard();
for (BoardSquare bs : BoardSquare.values()) {
if (!bs.onEdge()) {
result.set(bs);
}
}
return result;
}
public static BitBoard makeKnightMoves(BoardSquare kn) {
BitBoard result = new BitBoard();
for (BoardSquare bs : BoardSquare.values()) {
if (kn.hasKnightMoveTo(bs)) {
result.set(bs);
}
}
return result;
}
public static BitBoard makeBishopMoves(BoardSquare bish) {
BitBoard result = new BitBoard();
for (BoardSquare bs : BoardSquare.values()) {
if (bish.hasBishopMoveTo(bs)) {
result.set(bs);
}
}
return result;
}
public static BitBoard makeRookMoves(BoardSquare rook) {
BitBoard result = new BitBoard();
for (BoardSquare bs : BoardSquare.values()) {
if (rook.hasRookMoveTo(bs)) {
result.set(bs);
}
}
return result;
}
public BitBoard(String rep) {
this();
int displayIndex = 0;
for (int i = 0; i < rep.length(); ++i) {
if (rep.charAt(i) != '\n') {
if (rep.charAt(i) == '1') {
set(BoardSquare.values()[displayIndex]);
}
displayIndex += 1;
}
}
}
public String toString() {
StringBuilder sb = new StringBuilder();
int nextRow = 8;
for (BoardSquare bs : BoardSquare.values()) {
sb.append(isSet(bs) ? '1' : '0');
nextRow -= 1;
if (nextRow == 0) {
sb.append('\n');
nextRow = 8;
}
}
return sb.toString();
}
public void clear(BoardSquare bs) {
bits &= ~bs.getMask();
}
public void set(BoardSquare bs) {
bits |= bs.getMask();
}
public boolean isSet(BoardSquare s) {
return (bits & s.getMask()) != 0;
}
@Override
public BoardSquare next() {
prev = unseen & -unseen;
unseen -= prev;
return BoardSquare.values()[Long.numberOfTrailingZeros(prev)];
}