std::pair<std::shared_ptr<Node>, boost::optional<Status>>
createNode(const Status& originalStatus, Point p, Point d,
const std::shared_ptr<Node>& base, NodeFactory& nodeFactory,
const HeurCalculator& heurCalculator, const Checker& checker,
Dumper* dumper)
{
Point pd = p+d, pmd = p-d;
if (originalStatus.value(pd) != FieldType::floor ||
!originalStatus.reachable(pmd)) {
return {};
}
Status status(originalStatus);
status.currentPos(p);
if (heurCalculator.calculateStone(status, pd) < 0 ||
!status.moveStone(p, pd)) {
return {};
}
auto doCreateNode =
[&]() {
return nodeFactory.createNode(
status, MoveDescriptor(p, d), base);
};
if (pd != status.table().destination()) {
if (!checker.check(status, pd)) {
if (dumper) {
dumper->reject(doCreateNode(), checker.errorMessage());
}
return {};
}
}
return {doCreateNode(), std::move(status)};
}
