Function D_CheckNetGame

source/core/d_net.cpp:1658–1762

//

bool D_CheckNetGame (void)
{
	const char *v;
	int i;

	// First install the global net command handlers

	Net_SetCommandHandler(DEM_GENERICCHEAT, genericCheat);
	Net_SetCommandHandler(DEM_CHANGEMAP, changeMap);
	Net_SetCommandHandler(DEM_ENDSCREENJOB, endScreenJob);
	Net_SetCommandHandler(DEM_SAVEGAME, startSaveGame);

	for (i = 0; i < MAXNETNODES; i++)
	{
		nodeingame[i] = false;
		nettics[i] = 0;
		remoteresend[i] = false;		// set when local needs tics
		resendto[i] = 0;				// which tic to start sending
	}

	// Packet server has proven to be rather slow over the internet. Print a warning about it.
	v = Args->CheckValue("-netmode");
	if (v != NULL && (atoi(v) != 0))
	{
		Printf(TEXTCOLOR_YELLOW "Notice: Using PacketServer (netmode 1) over the internet is prone to running too slow on some internet configurations."
			"\nIf the game is running well below expected speeds, use netmode 0 (P2P) instead.\n");
	}

	int result = I_InitNetwork ();
	// I_InitNetwork sets doomcom and netgame
	if (result == -1)
	{
		return false;
	}
	else if (result > 0)
	{
		// For now, stop auto selecting PacketServer, as it's more likely to cause confusion.
		//NetMode = NET_PacketServer;
	}
	if (doomcom.id != DOOMCOM_ID)
	{
		I_FatalError ("Doomcom buffer invalid!");
	}
#if 0
	players[0].settings_controller = true;
#endif

	myconnectindex = doomcom.consoleplayer;

	if (myconnectindex == Net_Arbitrator)
	{
		v = Args->CheckValue("-netmode");
		if (v != NULL)
		{
			NetMode = atoi(v) != 0 ? NET_PacketServer : NET_PeerToPeer;
		}
		if (doomcom.numnodes > 1)
		{