Function SerializeNetworkGameInfo

src/network/core/network_game_info.cpp:205–266

* Serializes the NetworkGameInfo struct to the packet. * @param p the packet to write the data to. * @param info the NetworkGameInfo struct to serialize from. */

 * @param info the NetworkGameInfo struct to serialize from.
 */
void SerializeNetworkGameInfo(Packet &p, const NetworkServerGameInfo &info, bool send_newgrf_names)
{
	p.Send_uint8 (NETWORK_GAME_INFO_VERSION);

	/*
	 *              Please observe the order.
	 * The parts must be read in the same order as they are sent!
	 */

	/* Update the documentation in game_info.h on changes
	 * to the NetworkGameInfo wire-protocol! */

	/* NETWORK_GAME_INFO_VERSION = 7 */
	p.Send_uint64(info.ticks_playing);

	/* NETWORK_GAME_INFO_VERSION = 6 */
	p.Send_uint8(send_newgrf_names ? NST_GRFID_MD5_NAME : NST_GRFID_MD5);

	/* NETWORK_GAME_INFO_VERSION = 5 */
	GameInfo *game_info = Game::GetInfo();
	p.Send_uint32(game_info == nullptr ? -1 : (uint32_t)game_info->GetVersion());
	p.Send_string(game_info == nullptr ? "" : game_info->GetName());

	/* NETWORK_GAME_INFO_VERSION = 4 */
	{
		/* Only send the GRF Identification (GRF_ID and MD5 checksum) of
		 * the GRFs that are needed, i.e. the ones that the server has
		 * selected in the NewGRF GUI and not the ones that are used due
		 * to the fact that they are in [newgrf-static] in openttd.cfg */
		uint count = std::ranges::count_if(info.grfconfig, [](const auto &c) { return !c->flags.Test(GRFConfigFlag::Static); });
		p.Send_uint8 (count); // Send number of GRFs

		/* Send actual GRF Identifications */
		for (const auto &c : info.grfconfig) {
			if (c->flags.Test(GRFConfigFlag::Static)) continue;

			SerializeGRFIdentifier(p, c->ident);
			if (send_newgrf_names) p.Send_string(c->GetName());
		}
	}

	/* NETWORK_GAME_INFO_VERSION = 3 */
	p.Send_uint32(info.calendar_date.base());
	p.Send_uint32(info.calendar_start.base());

	/* NETWORK_GAME_INFO_VERSION = 2 */
	p.Send_uint8 (info.companies_max);
	p.Send_uint8 (info.companies_on);
	p.Send_uint8 (info.clients_max); // Used to be max-spectators

	/* NETWORK_GAME_INFO_VERSION = 1 */
	p.Send_string(info.server_name);
	p.Send_string(info.server_revision);
	p.Send_bool  (info.use_password);
	p.Send_uint8 (info.clients_max);
	p.Send_uint8 (info.clients_on);
	p.Send_uint8 (info.spectators_on);
	p.Send_uint16(info.map_width);