Function add_zone_to_all_buildings

library/modules/Buildings.cpp:224–257

}

static void add_zone_to_all_buildings(df::building* zone_as_building)
{
    if (zone_as_building->getType() != df::building_type::Civzone)
        return;

    auto zone = strict_virtual_cast<df::building_civzonest>(zone_as_building);

    if (zone == nullptr)
        return;

    for (auto bld : world->buildings.other.IN_PLAY)
    {
        if (zone->z != bld->z)
            continue;

        if (!is_suitable_building_for_zoning(bld))
            continue;

        int32_t cx = bld->centerx;
        int32_t cy = bld->centery;

        df::coord2d coord(cx, cy);

        //can a zone without extents exist?
        if (zone->room.extents && zone->isExtentShaped())
        {
            auto etile = getExtentTile(zone->room, coord);
            if (!etile || !*etile)
                continue;

            add_building_to_zone(bld, zone);
        }
    }
}

static void remove_building_from_zone(df::building* bld, df::building_civzonest* zone) {
    vector_erase_at(zone->contained_buildings, linear_index(zone->contained_buildings, bld));