fill client holes (lockstep)

src/td/simulation/ServerSimulation.cpp

@@ -36,5 +36,17 @@ void ServerSimulation::Handle(const protocol::commands::PlaceTowerCommand& a_Pla
 	AddToCommandHistory(m_History[m_CurrentTime + LOCKSTEP_BUFFER_SIZE], a_PlaceTower);
 }
 
+protocol::packets::LockStepResponsePacket ServerSimulation::GetResponse(
+	const protocol::packets::LockStepRequestPacket& a_Missing) const {
+	std::map<StepTime, protocol::LockStep> result;
+
+	for (StepTime step : a_Missing->m_Missing) {
+		result.emplace(step, m_History[step]);
+	}
+
+	return {result};
+}
+
+
 }  // namespace sim
 }  // namespace td