cl_main.c

来自「3D 游戏界的大牛人 John Carmack 终于放出了 Q3 的源代码」· C语言 代码 · 共 2,607 行 · 第 1/5 页

	if ( com_sv_running->integer && !strcmp( server, "localhost" ) ) {
		// if running a local server, kill it
		SV_Shutdown( "Server quit\n" );
	}

	// make sure a local server is killed
	Cvar_Set( "sv_killserver", "1" );
	SV_Frame( 0 );

	CL_Disconnect( qtrue );
	Con_Close();

	/* MrE: 2000-09-13: now called in CL_DownloadsComplete
	CL_FlushMemory( );
	*/

	Q_strncpyz( cls.servername, server, sizeof(cls.servername) );

	if (!NET_StringToAdr( cls.servername, &clc.serverAddress) ) {
		Com_Printf ("Bad server address\n");
		cls.state = CA_DISCONNECTED;
		return;
	}
	if (clc.serverAddress.port == 0) {
		clc.serverAddress.port = BigShort( PORT_SERVER );
	}
	Com_Printf( "%s resolved to %i.%i.%i.%i:%i\n", cls.servername,
		clc.serverAddress.ip[0], clc.serverAddress.ip[1],
		clc.serverAddress.ip[2], clc.serverAddress.ip[3],
		BigShort( clc.serverAddress.port ) );

	// if we aren't playing on a lan, we need to authenticate
	// with the cd key
	if ( NET_IsLocalAddress( clc.serverAddress ) ) {
		cls.state = CA_CHALLENGING;
	} else {
		cls.state = CA_CONNECTING;
	}

	cls.keyCatchers = 0;
	clc.connectTime = -99999;	// CL_CheckForResend() will fire immediately
	clc.connectPacketCount = 0;

	// server connection string
	Cvar_Set( "cl_currentServerAddress", server );
}


/*
=====================
CL_Rcon_f

  Send the rest of the command line over as
  an unconnected command.
=====================
*/
void CL_Rcon_f( void ) {
	char	message[1024];
	netadr_t	to;

	if ( !rcon_client_password->string ) {
		Com_Printf ("You must set 'rconpassword' before\n"
					"issuing an rcon command.\n");
		return;
	}

	message[0] = -1;
	message[1] = -1;
	message[2] = -1;
	message[3] = -1;
	message[4] = 0;

	strcat (message, "rcon ");

	strcat (message, rcon_client_password->string);
	strcat (message, " ");

	// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=543
	strcat (message, Cmd_Cmd()+5);

	if ( cls.state >= CA_CONNECTED ) {
		to = clc.netchan.remoteAddress;
	} else {
		if (!strlen(rconAddress->string)) {
			Com_Printf ("You must either be connected,\n"
						"or set the 'rconAddress' cvar\n"
						"to issue rcon commands\n");

			return;
		}
		NET_StringToAdr (rconAddress->string, &to);
		if (to.port == 0) {
			to.port = BigShort (PORT_SERVER);
		}
	}
	
	NET_SendPacket (NS_CLIENT, strlen(message)+1, message, to);
}

/*
=================
CL_SendPureChecksums
=================
*/
void CL_SendPureChecksums( void ) {
	const char *pChecksums;
	char cMsg[MAX_INFO_VALUE];
	int i;

	// if we are pure we need to send back a command with our referenced pk3 checksums
	pChecksums = FS_ReferencedPakPureChecksums();

	// "cp"
	// "Yf"
	Com_sprintf(cMsg, sizeof(cMsg), "Yf ");
	Q_strcat(cMsg, sizeof(cMsg), va("%d ", cl.serverId) );
	Q_strcat(cMsg, sizeof(cMsg), pChecksums);
	for (i = 0; i < 2; i++) {
		cMsg[i] += 10;
	}
	CL_AddReliableCommand( cMsg );
}

/*
=================
CL_ResetPureClientAtServer
=================
*/
void CL_ResetPureClientAtServer( void ) {
	CL_AddReliableCommand( va("vdr") );
}

/*
=================
CL_Vid_Restart_f

Restart the video subsystem

we also have to reload the UI and CGame because the renderer
doesn't know what graphics to reload
=================
*/
void CL_Vid_Restart_f( void ) {

	// don't let them loop during the restart
	S_StopAllSounds();
	// shutdown the UI
	CL_ShutdownUI();
	// shutdown the CGame
	CL_ShutdownCGame();
	// shutdown the renderer and clear the renderer interface
	CL_ShutdownRef();
	// client is no longer pure untill new checksums are sent
	CL_ResetPureClientAtServer();
	// clear pak references
	FS_ClearPakReferences( FS_UI_REF | FS_CGAME_REF );
	// reinitialize the filesystem if the game directory or checksum has changed
	FS_ConditionalRestart( clc.checksumFeed );

	cls.rendererStarted = qfalse;
	cls.uiStarted = qfalse;
	cls.cgameStarted = qfalse;
	cls.soundRegistered = qfalse;

	// unpause so the cgame definately gets a snapshot and renders a frame
	Cvar_Set( "cl_paused", "0" );

	// if not running a server clear the whole hunk
	if ( !com_sv_running->integer ) {
		// clear the whole hunk
		Hunk_Clear();
	}
	else {
		// clear all the client data on the hunk
		Hunk_ClearToMark();
	}

	// initialize the renderer interface
	CL_InitRef();

	// startup all the client stuff
	CL_StartHunkUsers();

	// start the cgame if connected
	if ( cls.state > CA_CONNECTED && cls.state != CA_CINEMATIC ) {
		cls.cgameStarted = qtrue;
		CL_InitCGame();
		// send pure checksums
		CL_SendPureChecksums();
	}
}

/*
=================
CL_Snd_Restart_f

Restart the sound subsystem
The cgame and game must also be forced to restart because
handles will be invalid
=================
*/
void CL_Snd_Restart_f( void ) {
	S_Shutdown();
	S_Init();

	CL_Vid_Restart_f();
}


/*
==================
CL_PK3List_f
==================
*/
void CL_OpenedPK3List_f( void ) {
	Com_Printf("Opened PK3 Names: %s\n", FS_LoadedPakNames());
}

/*
==================
CL_PureList_f
==================
*/
void CL_ReferencedPK3List_f( void ) {
	Com_Printf("Referenced PK3 Names: %s\n", FS_ReferencedPakNames());
}

/*
==================
CL_Configstrings_f
==================
*/
void CL_Configstrings_f( void ) {
	int		i;
	int		ofs;

	if ( cls.state != CA_ACTIVE ) {
		Com_Printf( "Not connected to a server.\n");
		return;
	}

	for ( i = 0 ; i < MAX_CONFIGSTRINGS ; i++ ) {
		ofs = cl.gameState.stringOffsets[ i ];
		if ( !ofs ) {
			continue;
		}
		Com_Printf( "%4i: %s\n", i, cl.gameState.stringData + ofs );
	}
}

/*
==============
CL_Clientinfo_f
==============
*/
void CL_Clientinfo_f( void ) {
	Com_Printf( "--------- Client Information ---------\n" );
	Com_Printf( "state: %i\n", cls.state );
	Com_Printf( "Server: %s\n", cls.servername );
	Com_Printf ("User info settings:\n");
	Info_Print( Cvar_InfoString( CVAR_USERINFO ) );
	Com_Printf( "--------------------------------------\n" );
}


//====================================================================

/*
=================
CL_DownloadsComplete

Called when all downloading has been completed
=================
*/
void CL_DownloadsComplete( void ) {

	// if we downloaded files we need to restart the file system
	if (clc.downloadRestart) {
		clc.downloadRestart = qfalse;

		FS_Restart(clc.checksumFeed); // We possibly downloaded a pak, restart the file system to load it

		// inform the server so we get new gamestate info
		CL_AddReliableCommand( "donedl" );

		// by sending the donedl command we request a new gamestate
		// so we don't want to load stuff yet
		return;
	}

	// let the client game init and load data
	cls.state = CA_LOADING;

	// Pump the loop, this may change gamestate!
	Com_EventLoop();

	// if the gamestate was changed by calling Com_EventLoop
	// then we loaded everything already and we don't want to do it again.
	if ( cls.state != CA_LOADING ) {
		return;
	}

	// starting to load a map so we get out of full screen ui mode
	Cvar_Set("r_uiFullScreen", "0");

	// flush client memory and start loading stuff
	// this will also (re)load the UI
	// if this is a local client then only the client part of the hunk
	// will be cleared, note that this is done after the hunk mark has been set
	CL_FlushMemory();

	// initialize the CGame
	cls.cgameStarted = qtrue;
	CL_InitCGame();

	// set pure checksums
	CL_SendPureChecksums();

	CL_WritePacket();
	CL_WritePacket();
	CL_WritePacket();
}

/*
=================
CL_BeginDownload

Requests a file to download from the server.  Stores it in the current
game directory.
=================
*/
void CL_BeginDownload( const char *localName, const char *remoteName ) {

	Com_DPrintf("***** CL_BeginDownload *****\n"
				"Localname: %s\n"
				"Remotename: %s\n"
				"****************************\n", localName, remoteName);

	Q_strncpyz ( clc.downloadName, localName, sizeof(clc.downloadName) );
	Com_sprintf( clc.downloadTempName, sizeof(clc.downloadTempName), "%s.tmp", localName );

	// Set so UI gets access to it
	Cvar_Set( "cl_downloadName", remoteName );
	Cvar_Set( "cl_downloadSize", "0" );
	Cvar_Set( "cl_downloadCount", "0" );
	Cvar_SetValue( "cl_downloadTime", cls.realtime );

	clc.downloadBlock = 0; // Starting new file
	clc.downloadCount = 0;

	CL_AddReliableCommand( va("download %s", remoteName) );
}

/*
=================
CL_NextDownload

A download completed or failed
=================
*/
void CL_NextDownload(void) {
	char *s;
	char *remoteName, *localName;

	// We are looking to start a download here
	if (*clc.downloadList) {
		s = clc.downloadList;

		// format is:
		//  @remotename@localname@remotename@localname, etc.

		if (*s == '@')
			s++;
		remoteName = s;
		
		if ( (s = strchr(s, '@')) == NULL ) {
			CL_DownloadsComplete();
			return;
		}

		*s++ = 0;
		localName = s;
		if ( (s = strchr(s, '@')) != NULL )
			*s++ = 0;
		else
			s = localName + strlen(localName); // point at the nul byte

		CL_BeginDownload( localName, remoteName );

		clc.downloadRestart = qtrue;

		// move over the rest
		memmove( clc.downloadList, s, strlen(s) + 1);

		return;
	}

	CL_DownloadsComplete();
}

/*
=================
CL_InitDownloads

After receiving a valid game state, we valid the cgame and local zip files here
and determine if we need to download them
=================
*/
void CL_InitDownloads(void) {
  char missingfiles[1024];

  if ( !cl_allowDownload->integer )
  {
    // autodownload is disabled on the client
    // but it's possible that some referenced files on the server are missing
    if (FS_ComparePaks( missingfiles, sizeof( missingfiles ), qfalse ) )
    {      
      // NOTE TTimo I would rather have that printed as a modal message box
      //   but at this point while joining the game we don't know wether we will successfully join or not
      Com_Printf( "\nWARNING: You are missing some files referenced by the server:\n%s"
                  "You might not be able to join the game\n"
                  "Go to the setting menu to turn on autodownload, or get the file elsewhere\n\n", missingfiles );
    }
  }
  else if ( FS_ComparePaks( clc.downloadList, sizeof( clc.downloadList ) , qtrue ) ) {

    Com_Printf("Need paks: %s\n", clc.downloadList );

		if ( *clc.downloadList ) {
			// if autodownloading is not enabled on the server
			cls.state = CA_CONNECTED;
			CL_NextDownload();
			return;
		}

	}
		
	CL_DownloadsComplete();
}

/*
=================
CL_CheckForResend

Resend a connect message if the last one has timed out
=================
*/
void CL_CheckForResend( void ) {
	int		port, i;
	char	info[MAX_INFO_STRING];
	char	data[MAX_INFO_STRING];

	// don't send anything if playing back a demo
	if ( clc.demoplaying ) {
		return;
	}

	// resend if we haven't gotten a reply yet
	if ( cls.state != CA_CONNECTING && cls.state != CA_CHALLENGING ) {
		return;
	}

	if ( cls.realtime - clc.connectTime < RETRANSMIT_TIMEOUT ) {
		return;
	}

	clc.connectTime = cls.realtime;	// for retransmit requests
	clc.connectPacketCount++;


	switch ( cls.state ) {
	case CA_CONNECTING:
		// requesting a challenge
		if ( !Sys_IsLANAddress( clc.serverAddress ) ) {
			CL_RequestAuthorization();
		}
		NET_OutOfBandPrint(NS_CLIENT, clc.serverAddress, "getchallenge");
		break;
		
	case CA_CHALLENGING:
		// sending back the challenge
		port = Cvar_VariableValue ("net_qport");

		Q_strncpyz( info, Cvar_InfoString( CVAR_USERINFO ), sizeof( info ) );
		Info_SetValueForKey( info, "protocol", va("%i", PROTOCOL_VERSION ) );
		Info_SetValueForKey( info, "qport", va("%i", port ) );
		Info_SetValueForKey( info, "challenge", va("%i", clc.challenge ) );
		
		strcpy(data, "connect ");
    // TTimo adding " " around the userinfo string to avoid truncated userinfo on the server
    //   (Com_TokenizeString tokenizes around spaces)
    data[8] = '"';

		for(i=0;i<strlen(info);i++) {
			data[9+i] = info[i];	// + (clc.challenge)&0x3;
		}
    data[9+i] = '"';
		data[10+i] = 0;

    // NOTE TTimo don't forget to set the right data length!
		NET_OutOfBandData( NS_CLIENT, clc.serverAddress, &data[0], i+10 );
		// the most current userinfo has been sent, so watch for any
		// newer changes to userinfo variables
		cvar_modifiedFlags &= ~CVAR_USERINFO;
		break;

	default:
		Com_Error( ERR_FATAL, "CL_CheckForResend: bad cls.state" );
	}
}

/*
===================
CL_DisconnectPacket

Sometimes the server can drop the client and the netchan based
disconnect can be lost.  If the client continues to send packets
to the server, the server will send out of band disconnect packets
to the client so it doesn't have to wait for the full timeout period.
===================
*/