std::vector<Trade_route> City::find_sellers_of(Resource res)
{
std::vector<Trade_route> ret;
for (std::map<int,Trade_route>::iterator it = trade_routes.begin();
it != trade_routes.end();
it++) {
City* seller = GAME->world->lookup_city_uid(it->first);
if (seller) {
int avail = seller->get_net_resource_production(res);
if (avail > 0) {
// Insert into our return vector, sorted by distance.
// TODO: Sort by unit price (including overhead)!
int dist = it->second.distance;
bool found = false;
for (int i = 0; !found && i < ret.size(); i++) {
if (dist <= ret[i].distance) {
found = true;
ret.insert( ret.begin() + i, it->second );
}
}
if (!found) {
ret.push_back(it->second);
}
} // if (avail > 0)
} // if (seller)
} // for (std::map<int,Trade_route>::iterator it = trade_routes.begin(); ... )
return ret;
}
