Method writeNetDelta

source/core/StarNetElementDynamicGroup.hpp:203–242

template <typename Element>
bool NetElementDynamicGroup<Element>::writeNetDelta(DataStream& ds, uint64_t fromVersion, NetCompatibilityRules rules) const {
  if (!checkWithRules(rules)) return false;
  if (fromVersion < m_changeDataLastVersion) {
    ds.write<bool>(true);
    netStore(ds, rules);
    return true;

  } else {
    bool deltaWritten = false;
    auto willWrite = [&]() {
      if (!deltaWritten) {
        deltaWritten = true;
        ds.write<bool>(false);
      }
    };

    for (auto const& p : m_changeData) {
      if (p.first >= fromVersion) {
        willWrite();
        ds.writeVlqU(1);
        ds.write(p.second);
      }
    }

    m_buffer.setStreamCompatibilityVersion(rules);
    for (auto& p : m_idMap) {
      if (p.second->writeNetDelta(m_buffer, fromVersion, rules)) {
        willWrite();
        ds.writeVlqU(p.first + 1);
        ds.writeBytes(m_buffer.data());
        m_buffer.clear();
      }
    }

    if (deltaWritten)
      ds.writeVlqU(0);

    return deltaWritten;
  }
}

template <typename Element>
void NetElementDynamicGroup<Element>::readNetDelta(DataStream& ds, float interpolationTime, NetCompatibilityRules rules) {