private void traverse(GameListener listener, boolean withLines, int plyNumber, int level) {
while (hasNextMove()) {
int numOfNextMoves = getNumOfNextMoves();
Move move = goForwardAndGetMove(true);
listener.notifyMove(move, getNags(), getComment(), plyNumber, level);
if (withLines && numOfNextMoves > 1) {
for (int i = 1; i < numOfNextMoves; i++) {
goBack(true);
listener.notifyLineStart(level);
move = goForwardAndGetMove(i, true);
listener.notifyMove(move, getNags(), getComment(), plyNumber, level + 1);
traverse(listener, withLines, plyNumber + 1, level + 1);
goBackToMainLine(true);
if (i > 0) listener.notifyLineEnd(level);
}
}
plyNumber++;
}
}