Legacy protocol compatibility (cl_legacymode)

engine/client/cl_events.c

@@ -393,7 +393,7 @@ void CL_ParseEvent( sizebuf_t *msg )
 		event_index = MSG_ReadUBitLong( msg, MAX_EVENT_BITS );
 
 		if( MSG_ReadOneBit( msg ))
-			packet_index = MSG_ReadUBitLong( msg, MAX_ENTITY_BITS );
+			packet_index = MSG_ReadUBitLong( msg, cls.legacymode?MAX_LEGACY_ENTITY_BITS:MAX_ENTITY_BITS );
 		else packet_index = -1;
 
 		if( MSG_ReadOneBit( msg ))

engine/client/cl_frame.c

@@ -721,7 +721,7 @@ int CL_ParsePacketEntities( sizebuf_t *msg, qboolean delta )
 		CL_WriteDemoJumpTime();
 
 	// sentinel count. save it for debug checking
-	count = ( MSG_ReadUBitLong( msg, MAX_VISIBLE_PACKET_BITS ) + 1 );
+	count =  cls.legacymode?MSG_ReadWord( msg ) : ( MSG_ReadUBitLong( msg, MAX_VISIBLE_PACKET_BITS ) + 1 );
 	newframe = &cl.frames[cl.parsecountmod];
 
 	// allocate parse entities
@@ -795,9 +795,8 @@ int CL_ParsePacketEntities( sizebuf_t *msg, qboolean delta )
 
 	while( 1 )
 	{
-		newnum = MSG_ReadUBitLong( msg, MAX_ENTITY_BITS );
-		if( newnum == LAST_EDICT ) break; // end of packet entities
-
+		newnum = cls.legacymode ? MSG_ReadWord( msg ) : MSG_ReadUBitLong( msg, MAX_ENTITY_BITS );
+		if( newnum == (cls.legacymode?0:LAST_EDICT) ) break; // end of packet entities
 		if( MSG_CheckOverflow( msg ))
 			Host_Error( "CL_ParsePacketEntities: overflow\n" );
 		player = CL_IsPlayerIndex( newnum );

engine/client/cl_main.c

@@ -69,6 +69,7 @@ convar_t	*cl_lw;
 convar_t	*cl_charset;
 convar_t	*cl_trace_messages;
 convar_t	*hud_utf8;
+convar_t	*cl_legacymode;
 
 //
 // userinfo
@@ -1015,6 +1016,10 @@ void CL_SendConnectPacket( void )
 	Info_SetValueForKey( protinfo, "uuid", key, sizeof( protinfo ));
 	Info_SetValueForKey( protinfo, "qport", qport, sizeof( protinfo ));
 
+	/// TODO: identification for legacy mode
+	if( cls.legacymode )
+		Netchan_OutOfBandPrint( NS_CLIENT, adr, "connect %i %i %i \"%s\"\n", 48, Q_atoi(qport), cls.challenge, cls.userinfo );
+	else
 		Netchan_OutOfBandPrint( NS_CLIENT, adr, "connect %i %i \"%s\" \"%s\"\n", PROTOCOL_VERSION, cls.challenge, protinfo, cls.userinfo );
 	cls.timestart = Sys_DoubleTime();
 }
@@ -1098,9 +1103,10 @@ void CL_CheckForResend( void )
 
 	Con_Printf( "Connecting to %s... [retry #%i]\n", cls.servername, cls.connect_retry );
 
-	if( cl_test_bandwidth.value )
+	if( !cls.legacymode && cl_test_bandwidth.value )
 		Netchan_OutOfBandPrint( NS_CLIENT, adr, "bandwidth %i %i\n", PROTOCOL_VERSION, cls.max_fragment_size );
-	else Netchan_OutOfBandPrint( NS_CLIENT, adr, "getchallenge\n" );
+	else
+		Netchan_OutOfBandPrint( NS_CLIENT, adr, "getchallenge\n" );
 }
 
 resource_t *CL_AddResource( resourcetype_t type, const char *name, int size, qboolean bFatalIfMissing, int index )
@@ -1371,6 +1377,8 @@ This is also called on Host_Error, so it shouldn't cause any errors
 */
 void CL_Disconnect( void )
 {
+	cls.legacymode = cl_legacymode->value;
+
 	if( cls.state == ca_disconnected )
 		return;
 
@@ -1438,11 +1446,14 @@ void CL_LocalServers_f( void )
 	Con_Printf( "Scanning for servers on the local network area...\n" );
 	NET_Config( true ); // allow remote
 
+	if( cls.state == ca_disconnected )
+		cls.legacymode = cl_legacymode->value;
+
 	// send a broadcast packet
 	adr.type = NA_BROADCAST;
 	adr.port = MSG_BigShort( PORT_SERVER );
 
-	Netchan_OutOfBandPrint( NS_CLIENT, adr, "info %i", PROTOCOL_VERSION );
+	Netchan_OutOfBandPrint( NS_CLIENT, adr, "info %i", cls.legacymode?PROTOCOL_LEGACY_VERSION:PROTOCOL_VERSION );
 }
 
 #define MS_SCAN_REQUEST "1\xFF" "0.0.0.0:0\0"
@@ -1460,6 +1471,9 @@ void CL_InternetServers_f( void )
 
 	NET_Config( true ); // allow remote
 
+	if( cls.state == ca_disconnected )
+		cls.legacymode = cl_legacymode->value;
+
 	Con_Printf( "Scanning for servers on the internet area...\n" );
 	Info_SetValueForKey( info, "gamedir", GI->gamefolder, remaining );
 	Info_SetValueForKey( info, "clver", XASH_VERSION, remaining ); // let master know about client version
@@ -1935,7 +1949,7 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
 			else if( clgame.request_type == NET_REQUEST_GAMEUI )
 			{
 				NET_Config( true ); // allow remote
-				Netchan_OutOfBandPrint( NS_CLIENT, servadr, "info %i", PROTOCOL_VERSION );
+				Netchan_OutOfBandPrint( NS_CLIENT, servadr, "info %i", cls.legacymode?PROTOCOL_LEGACY_VERSION:PROTOCOL_VERSION );
 			}
 		}
 
@@ -2016,6 +2030,7 @@ void CL_ReadNetMessage( void )
 		// run special handler for quake demos
 		if( cls.demoplayback == DEMO_QUAKE1 )
 			CL_ParseQuakeMessage( &net_message, true );
+		else if( cls.legacymode ) CL_ParseLegacyServerMessage( &net_message, true );
 		else CL_ParseServerMessage( &net_message, true );
 		cl.send_reply = true;
 	}
@@ -2617,6 +2632,7 @@ void CL_InitLocal( void )
 	hud_scale = Cvar_Get( "hud_scale", "0", FCVAR_ARCHIVE|FCVAR_LATCH, "scale hud at current resolution" );
 	Cvar_Get( "cl_background", "0", FCVAR_READ_ONLY, "indicate what background map is running" );
 	cl_showevents = Cvar_Get( "cl_showevents", "0", FCVAR_ARCHIVE, "show events playback" );
+	cl_legacymode = Cvar_Get( "cl_legacymode", "0", 0, "legacy mode compatibility" );
 	Cvar_Get( "lastdemo", "", FCVAR_ARCHIVE, "last played demo" );
 
 	// these two added to shut up CS 1.5 about 'unknown' commands
@@ -2676,6 +2692,8 @@ void CL_InitLocal( void )
 	Cmd_AddCommand ("reconnect", CL_Reconnect_f, "reconnect to current level" );
 
 	Cmd_AddCommand ("rcon", CL_Rcon_f, "sends a command to the server console (rcon_password and rcon_address required)" );
+	Cmd_AddCommand ("precache", CL_LegacyPrecache_f, "legacy server compatibility" );
+
 }
 
 //============================================================================

engine/client/cl_parse.c

@@ -353,6 +353,7 @@ void CL_ParseStaticEntity( sizebuf_t *msg )
 	R_AddEfrags( ent );	// add link
 }
 
+
 /*
 ==================
 CL_WeaponAnim
@@ -1127,7 +1128,7 @@ void CL_ParseClientData( sizebuf_t *msg )
 		if( !MSG_ReadOneBit( msg )) break;
 
 		// read the weapon idx
-		idx = MSG_ReadUBitLong( msg, MAX_WEAPON_BITS );
+		idx = MSG_ReadUBitLong( msg, cls.legacymode?MAX_LEGACY_WEAPON_BITS:MAX_WEAPON_BITS );
 
 		MSG_ReadWeaponData( msg, &from_wd[idx], &to_wd[idx], cl.mtime[0] );
 	}
@@ -1297,16 +1298,40 @@ void CL_RegisterUserMessage( sizebuf_t *msg )
 	int	svc_num, size;
 	
 	svc_num = MSG_ReadByte( msg );
-	size = MSG_ReadWord( msg );
+	size = cls.legacymode?MSG_ReadByte( msg ):MSG_ReadWord( msg );
 	pszName = MSG_ReadString( msg );
 
 	// important stuff
-	if( size == 0xFFFF ) size = -1;
+	if( size == (cls.legacymode?0xFF:0xFFFF) ) size = -1;
 	svc_num = bound( 0, svc_num, 255 );
 
 	CL_LinkUserMessage( pszName, svc_num, size );
 }
 
+/*
+================
+CL_RegisterUserMessage
+
+register new user message or update existing
+================
+*/
+/*
+void CL_LegacyRegisterUserMessage( sizebuf_t *msg )
+{
+	char	*pszName;
+	int	svc_num, size;
+
+	svc_num = MSG_ReadByte( msg );
+	size = MSG_ReadByte( msg );
+	pszName = MSG_ReadString( msg );
+
+	// important stuff
+	if( size == 0xFF ) size = -1;
+	svc_num = bound( 0, svc_num, 255 );
+
+	CL_LinkUserMessage( pszName, svc_num, size );
+}
+*/
 /*
 ================
 CL_UpdateUserinfo
@@ -1933,7 +1958,12 @@ void CL_ParseUserMessage( sizebuf_t *msg, int svc_num )
 	iSize = clgame.msg[i].size;
 
 	// message with variable sizes receive an actual size as first byte
-	if( iSize == -1 ) iSize = MSG_ReadWord( msg );
+	if( iSize == -1 ) iSize = cls.legacymode?MSG_ReadByte( msg ):MSG_ReadWord( msg );
+	if( iSize >= MAX_USERMSG_LENGTH )
+	{
+		Msg("WTF??? %d %d\n", i, svc_num );
+		return;
+	}
 
 	// parse user message into buffer
 	MSG_ReadBytes( msg, pbuf, iSize );
@@ -2271,3 +2301,778 @@ void CL_ParseServerMessage( sizebuf_t *msg, qboolean normal_message )
 		}
 	}
 }
+
+/*
+==================
+CL_ParseBaseline
+==================
+*/
+void CL_LegacyParseBaseline( sizebuf_t *msg )
+{
+	int		i, newnum;
+	entity_state_t	nullstate;
+	qboolean		player;
+	cl_entity_t	*ent;
+
+	Delta_InitClient ();	// finalize client delta's
+
+	memset( &nullstate, 0, sizeof( nullstate ));
+
+	newnum = MSG_ReadWord( msg );
+	player = CL_IsPlayerIndex( newnum );
+
+	if( newnum >= clgame.maxEntities )
+		Host_Error( "CL_AllocEdict: no free edicts\n" );
+
+	ent = CL_EDICT_NUM( newnum );
+	memset( &ent->prevstate, 0, sizeof( ent->prevstate ));
+	ent->index = newnum;
+
+	MSG_ReadDeltaEntity( msg, &ent->prevstate, &ent->baseline, newnum, player, 1.0f );
+
+}
+
+/*
+==================
+CL_ParseServerData
+==================
+*/
+void CL_ParseLegacyServerData( sizebuf_t *msg )
+{
+	string	gamefolder;
+	qboolean	background;
+	int	i;
+
+	Con_Reportf( "Legacy serverdata packet received.\n" );
+
+	cls.timestart = Sys_DoubleTime();
+
+	cls.demowaiting = false;	// server is changed
+	//clgame.load_sequence++;	// now all hud sprites are invalid
+
+	// wipe the client_t struct
+	if( !cls.changelevel && !cls.changedemo )
+		CL_ClearState ();
+	cls.state = ca_connected;
+
+	// parse protocol version number
+	i = MSG_ReadLong( msg );
+	//cls.serverProtocol = i;
+
+	if( i != 48 )
+		Host_Error( "Server uses invalid protocol (%i should be %i)\n", i, PROTOCOL_VERSION );
+
+	cl.servercount = MSG_ReadLong( msg );
+	cl.checksum = MSG_ReadLong( msg );
+	cl.playernum = MSG_ReadByte( msg );
+	cl.maxclients = MSG_ReadByte( msg );
+	clgame.maxEntities = MSG_ReadWord( msg );
+	clgame.maxEntities = bound( 600, clgame.maxEntities, 4096 );
+	clgame.maxModels = 512;
+	Q_strncpy( clgame.mapname, MSG_ReadString( msg ), MAX_STRING );
+	Q_strncpy( clgame.maptitle, MSG_ReadString( msg ), MAX_STRING );
+	background = MSG_ReadOneBit( msg );
+	Q_strncpy( gamefolder, MSG_ReadString( msg ), MAX_STRING );
+	host.features = (uint)MSG_ReadLong( msg );
+
+	// Re-init hud video, especially if we changed game directories
+	clgame.dllFuncs.pfnVidInit();
+
+	if( Con_FixedFont( ))
+	{
+		// seperate the printfs so the server message can have a color
+		Con_Print( "\n\35\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\37\n" );
+		Con_Print( va( "%c%s\n\n", 2, clgame.maptitle ));
+	}
+
+	// multiplayer game?
+	if( cl.maxclients > 1 )
+	{
+		// allow console in multiplayer games
+		host.allow_console = true;
+
+		// loading user settings
+		CSCR_LoadDefaultCVars( "user.scr" );
+
+		if( r_decals->value > mp_decals.value )
+			Cvar_SetValue( "r_decals", mp_decals.value );
+	}
+	else Cvar_Reset( "r_decals" );
+
+	// set the background state
+	if( cls.demoplayback && ( cls.demonum != -1 ))
+	{
+		// re-init mouse
+		host.mouse_visible = false;
+		cl.background = true;
+	}
+	else cl.background = background;
+
+	if( cl.background )	// tell the game parts about background state
+		Cvar_FullSet( "cl_background", "1", FCVAR_READ_ONLY );
+	else Cvar_FullSet( "cl_background", "0", FCVAR_READ_ONLY );
+
+	if( !cls.changelevel )
+	{
+		// continue playing if we are changing level
+		S_StopBackgroundTrack ();
+	}
+
+	if( !cls.changedemo )
+		UI_SetActiveMenu( cl.background );
+	else if( !cls.demoplayback )
+		Key_SetKeyDest( key_menu );
+
+	// don't reset cursor in background mode
+	if( cl.background )
+		IN_MouseRestorePos();
+
+	// will be changed later
+	cl.viewentity = cl.playernum + 1;
+	gameui.globals->maxClients = cl.maxclients;
+	Q_strncpy( gameui.globals->maptitle, clgame.maptitle, sizeof( gameui.globals->maptitle ));
+
+	if( !cls.changelevel && !cls.changedemo )
+		CL_InitEdicts (); // re-arrange edicts
+
+	// get splash name
+	if( cls.demoplayback && ( cls.demonum != -1 ))
+		Cvar_Set( "cl_levelshot_name", va( "levelshots/%s_%s", cls.demoname, glState.wideScreen ? "16x9" : "4x3" ));
+	else Cvar_Set( "cl_levelshot_name", va( "levelshots/%s_%s", clgame.mapname, glState.wideScreen ? "16x9" : "4x3" ));
+	Cvar_SetValue( "scr_loading", 0.0f ); // reset progress bar
+
+	if(( cl_allow_levelshots->value && !cls.changelevel ) || cl.background )
+	{
+		if( !FS_FileExists( va( "%s.bmp", cl_levelshot_name->string ), true ))
+			Cvar_Set( "cl_levelshot_name", "*black" ); // render a black screen
+		cls.scrshot_request = scrshot_plaque; // request levelshot even if exist (check filetime)
+	}
+
+	for( i = 0; i < MAX_CLIENTS; i++ )
+		COM_ClearCustomizationList( &cl.players[i].customdata, true );
+	CL_CreateCustomizationList();
+
+	memset( &clgame.movevars, 0, sizeof( clgame.movevars ));
+	memset( &clgame.oldmovevars, 0, sizeof( clgame.oldmovevars ));
+	memset( &clgame.centerPrint, 0, sizeof( clgame.centerPrint ));
+	cl.video_prepped = false;
+	cl.audio_prepped = false;
+}
+
+/*
+==================
+CL_ParseStaticEntity
+
+static client entity
+==================
+*/
+void CL_LegacyParseStaticEntity( sizebuf_t *msg )
+{
+	int		i;
+	entity_state_t	state;
+	cl_entity_t	*ent;
+
+	memset( &state, 0, sizeof( state ));
+	state.modelindex = MSG_ReadShort( msg );
+	state.sequence = MSG_ReadByte( msg );
+	state.frame = MSG_ReadByte( msg );
+	state.colormap = MSG_ReadWord( msg );
+	state.skin = MSG_ReadByte( msg );
+
+	for( i = 0; i < 3; i++ )
+	{
+		state.origin[i] = MSG_ReadCoord( msg );
+		state.angles[i] = MSG_ReadBitAngle( msg, 16 );
+	}
+
+	state.rendermode = MSG_ReadByte( msg );
+
+	if( state.rendermode != kRenderNormal )
+	{
+		state.renderamt = MSG_ReadByte( msg );
+		state.rendercolor.r = MSG_ReadByte( msg );
+		state.rendercolor.g = MSG_ReadByte( msg );
+		state.rendercolor.b = MSG_ReadByte( msg );
+		state.renderfx = MSG_ReadByte( msg );
+	}
+
+	i = clgame.numStatics;
+	if( i >= MAX_STATIC_ENTITIES )
+	{
+		Con_Printf( S_ERROR "MAX_STATIC_ENTITIES limit exceeded!\n" );
+		return;
+	}
+
+	ent = &clgame.static_entities[i];
+	clgame.numStatics++;
+
+	// all states are same
+	ent->baseline = ent->curstate = ent->prevstate = state;
+	ent->index = 0; // static entities doesn't has the numbers
+
+	// statics may be respawned in game e.g. for demo recording
+	if( cls.state == ca_connected || cls.state == ca_validate )
+		ent->trivial_accept = INVALID_HANDLE;
+
+	// setup the new static entity
+	VectorCopy( ent->curstate.origin, ent->origin );
+	VectorCopy( ent->curstate.angles, ent->angles );
+	ent->model = CL_ModelHandle( state.modelindex );
+	ent->curstate.framerate = 1.0f;
+	CL_ResetLatchedVars( ent, true );
+
+	if( ent->curstate.rendermode == kRenderNormal && ent->model != NULL )
+	{
+		// auto 'solid' faces
+		if( FBitSet( ent->model->flags, MODEL_TRANSPARENT ) && Host_IsQuakeCompatible( ))
+		{
+			ent->curstate.rendermode = kRenderTransAlpha;
+			ent->curstate.renderamt = 255;
+		}
+	}
+
+	R_AddEfrags( ent );	// add link
+}
+
+
+
+void CL_LegacyParseSoundPacket( sizebuf_t *msg, qboolean is_ambient )
+{
+	vec3_t	pos;
+	int 	chan, sound;
+	float 	volume, attn;
+	int	flags, pitch, entnum;
+	sound_t	handle = 0;
+
+	flags = MSG_ReadWord( msg );
+	if( flags & SND_LEGACY_LARGE_INDEX )
+	{
+		sound = MSG_ReadWord( msg );
+		flags &= ~SND_LEGACY_LARGE_INDEX;
+	}
+	else
+		sound = MSG_ReadByte( msg );
+	chan = MSG_ReadByte( msg );
+
+	if( FBitSet( flags, SND_VOLUME ))
+		volume = (float)MSG_ReadByte( msg ) / 255.0f;
+	else volume = VOL_NORM;
+
+	if( FBitSet( flags, SND_ATTENUATION ))
+		attn = (float)MSG_ReadByte( msg ) / 64.0f;
+	else attn = ATTN_NONE;
+
+	if( FBitSet( flags, SND_PITCH ))
+		pitch = MSG_ReadByte( msg );
+	else pitch = PITCH_NORM;
+
+	// entity reletive
+	entnum = MSG_ReadWord( msg );
+
+	// positioned in space
+	MSG_ReadVec3Coord( msg, pos );
+
+	if( FBitSet( flags, SND_SENTENCE ))
+	{
+		char	sentenceName[32];
+
+		//if( FBitSet( flags, SND_SEQUENCE ))
+			//Q_snprintf( sentenceName, sizeof( sentenceName ), "!#%i", sound + MAX_SOUNDS );
+		//else
+		Q_snprintf( sentenceName, sizeof( sentenceName ), "!%i", sound );
+
+		handle = S_RegisterSound( sentenceName );
+	}
+	else handle = cl.sound_index[sound];	// see precached sound
+
+	if( !cl.audio_prepped )
+		return; // too early
+
+	// g-cont. sound and ambient sound have only difference with channel
+	if( is_ambient )
+	{
+		S_AmbientSound( pos, entnum, handle, volume, attn, pitch, flags );
+	}
+	else
+	{
+		S_StartSound( pos, entnum, chan, handle, volume, attn, pitch, flags );
+	}
+}
+/*
+================
+CL_PrecacheSound
+
+prceache sound from server
+================
+*/
+void CL_LegacyPrecacheSound( sizebuf_t *msg )
+{
+	int	soundIndex;
+
+	soundIndex = MSG_ReadUBitLong( msg, MAX_SOUND_BITS );
+
+	if( soundIndex < 0 || soundIndex >= MAX_SOUNDS )
+		Host_Error( "CL_PrecacheSound: bad soundindex %i\n", soundIndex );
+
+	Q_strncpy( cl.sound_precache[soundIndex], MSG_ReadString( msg ), sizeof( cl.sound_precache[0] ));
+
+	// when we loading map all resources is precached sequentially
+	//if( !cl.audio_prepped ) return;
+
+	cl.sound_index[soundIndex] = S_RegisterSound( cl.sound_precache[soundIndex] );
+}
+
+void CL_LegacyPrecacheModel( sizebuf_t *msg )
+{
+	int	modelIndex;
+	string model;
+
+	modelIndex = MSG_ReadUBitLong( msg, MAX_LEGACY_MODEL_BITS );
+
+	if( modelIndex < 0 || modelIndex >= MAX_MODELS )
+		Host_Error( "CL_PrecacheModel: bad modelindex %i\n", modelIndex );
+
+	Q_strncpy( model, MSG_ReadString( msg ), MAX_STRING );
+	//Q_strncpy( cl.model_precache[modelIndex], BF_ReadString( msg ), sizeof( cl.model_precache[0] ));
+
+	// when we loading map all resources is precached sequentially
+	//if( !cl.video_prepped ) return;
+	if( modelIndex == 1 && !cl.worldmodel )
+	{
+		CL_ClearWorld ();
+
+		cl.models[modelIndex] = cl.worldmodel = Mod_LoadWorld( model, true );
+		return;
+
+	}
+
+	//Mod_RegisterModel( cl.model_precache[modelIndex], modelIndex );
+
+	cl.models[modelIndex] = Mod_ForName( model, false, false );
+	cl.nummodels = Q_max( cl.nummodels, modelIndex  );
+}
+
+void CL_LegacyPrecacheEvent( sizebuf_t *msg )
+{
+	int	eventIndex;
+
+	eventIndex = MSG_ReadUBitLong( msg, MAX_EVENT_BITS );
+
+	if( eventIndex < 0 || eventIndex >= MAX_EVENTS )
+		Host_Error( "CL_PrecacheEvent: bad eventindex %i\n", eventIndex );
+
+	Q_strncpy( cl.event_precache[eventIndex], MSG_ReadString( msg ), sizeof( cl.event_precache[0] ));
+
+	// can be set now
+	CL_SetEventIndex( cl.event_precache[eventIndex], eventIndex );
+}
+
+
+void CL_LegacyUpdateUserinfo( sizebuf_t *msg )
+{
+	int		slot, id = 0;
+	qboolean		active;
+	player_info_t	*player;
+
+	slot = MSG_ReadUBitLong( msg, MAX_CLIENT_BITS );
+
+	if( slot >= MAX_CLIENTS )
+		Host_Error( "CL_ParseServerMessage: svc_updateuserinfo >= MAX_CLIENTS\n" );
+
+	//id = MSG_ReadLong( msg );	// unique user ID
+	player = &cl.players[slot];
+	active = MSG_ReadOneBit( msg ) ? true : false;
+
+	if( active )
+	{
+		Q_strncpy( player->userinfo, MSG_ReadString( msg ), sizeof( player->userinfo ));
+		Q_strncpy( player->name, Info_ValueForKey( player->userinfo, "name" ), sizeof( player->name ));
+		Q_strncpy( player->model, Info_ValueForKey( player->userinfo, "model" ), sizeof( player->model ));
+		player->topcolor = Q_atoi( Info_ValueForKey( player->userinfo, "topcolor" ));
+		player->bottomcolor = Q_atoi( Info_ValueForKey( player->userinfo, "bottomcolor" ));
+		player->spectator = Q_atoi( Info_ValueForKey( player->userinfo, "*hltv" ));
+		//MSG_ReadBytes( msg, player->hashedcdkey, sizeof( player->hashedcdkey ));
+
+		if( slot == cl.playernum ) memcpy( &gameui.playerinfo, player, sizeof( player_info_t ));
+	}
+	else memset( player, 0, sizeof( *player ));
+}
+
+/*
+=====================
+CL_ParseLegacyServerMessage
+
+dispatch messages
+=====================
+*/
+void CL_ParseLegacyServerMessage( sizebuf_t *msg, qboolean normal_message )
+{
+	size_t		bufStart, playerbytes;
+	int		cmd, param1, param2;
+	int		old_background;
+	const char	*s;
+
+	cls.starting_count = MSG_GetNumBytesRead( msg );	// updates each frame
+	CL_Parse_Debug( true );			// begin parsing
+
+	if( normal_message )
+	{
+		// assume no entity/player update this packet
+		if( cls.state == ca_active )
+		{
+			cl.frames[cls.netchan.incoming_sequence & CL_UPDATE_MASK].valid = false;
+			cl.frames[cls.netchan.incoming_sequence & CL_UPDATE_MASK].choked = false;
+		}
+		else
+		{
+			CL_ResetFrame( &cl.frames[cls.netchan.incoming_sequence & CL_UPDATE_MASK] );
+		}
+	}
+
+	// parse the message
+	while( 1 )
+	{
+		if( MSG_CheckOverflow( msg ))
+		{
+			Host_Error( "CL_ParseServerMessage: overflow!\n" );
+			return;
+		}
+
+		// mark start position
+		bufStart = MSG_GetNumBytesRead( msg );
+
+		// end of message (align bits)
+		if( MSG_GetNumBitsLeft( msg ) < 8 )
+			break;
+
+		cmd = MSG_ReadServerCmd( msg );
+
+		// record command for debugging spew on parse problem
+		CL_Parse_RecordCommand( cmd, bufStart );
+
+		// other commands
+		switch( cmd )
+		{
+		case svc_bad:
+			Host_Error( "svc_bad\n" );
+			break;
+		case svc_nop:
+			// this does nothing
+			break;
+		case svc_disconnect:
+			CL_Drop ();
+			Host_AbortCurrentFrame ();
+			break;
+		case svc_legacy_event:
+			CL_ParseEvent( msg );
+			cl.frames[cl.parsecountmod].graphdata.event += MSG_GetNumBytesRead( msg ) - bufStart;
+			break;
+		case svc_legacy_changing:
+			old_background = cl.background;
+			if( MSG_ReadOneBit( msg ))
+			{
+				cls.changelevel = true;
+				S_StopAllSounds( true );
+
+				Con_Printf( "Server changing, reconnecting\n" );
+
+				if( cls.demoplayback )
+				{
+					SCR_BeginLoadingPlaque( cl.background );
+					cls.changedemo = true;
+				}
+
+				CL_ClearState ();
+				CL_InitEdicts (); // re-arrange edicts
+			}
+			else Con_Printf( "Server disconnected, reconnecting\n" );
+
+			if( cls.demoplayback )
+			{
+				cl.background = (cls.demonum != -1) ? true : false;
+				cls.state = ca_connected;
+			}
+			else
+			{
+				// g-cont. local client skip the challenge
+				if( SV_Active( ))
+					cls.state = ca_disconnected;
+				else cls.state = ca_connecting;
+				cl.background = old_background;
+				cls.connect_time = MAX_HEARTBEAT;
+			}
+			break;
+		case svc_setview:
+			CL_ParseViewEntity( msg );
+			break;
+		case svc_sound:
+			CL_LegacyParseSoundPacket( msg, false );
+			cl.frames[cl.parsecountmod].graphdata.sound += MSG_GetNumBytesRead( msg ) - bufStart;
+			break;
+		case svc_legacy_ambientsound:
+			CL_LegacyParseSoundPacket( msg, true );
+			cl.frames[cl.parsecountmod].graphdata.sound += MSG_GetNumBytesRead( msg ) - bufStart;
+
+			break;
+		case svc_time:
+			CL_ParseServerTime( msg );
+			break;
+		case svc_print:
+			Con_Printf( "%s", MSG_ReadString( msg ));
+			break;
+		case svc_stufftext:
+			s = MSG_ReadString( msg );
+#ifdef HACKS_RELATED_HLMODS
+			// dsiable Cry Of Fear antisave protection
+			if( !Q_strnicmp( s, "disconnect", 10 ) && cls.signon != SIGNONS )
+				break; // too early
+#endif
+			if( !Q_strcmp(s, "cmd getresourcelist\n") )
+				Cbuf_AddText("cmd continueloading\n");
+			else
+			{
+				Con_Reportf( "Stufftext: %s", s );
+				Cbuf_AddText( s );
+			}
+			break;
+		case svc_setangle:
+			CL_ParseSetAngle( msg );
+			break;
+		case svc_serverdata:
+			Cbuf_Execute(); // make sure any stuffed commands are done
+			CL_ParseLegacyServerData( msg );
+			break;
+		case svc_lightstyle:
+			CL_ParseLightStyle( msg );
+			break;
+		case svc_updateuserinfo:
+			CL_LegacyUpdateUserinfo( msg );
+			break;
+		case svc_deltatable:
+			Delta_ParseTableField( msg );
+			break;
+		case svc_clientdata:
+			CL_ParseClientData( msg );
+			cl.frames[cl.parsecountmod].graphdata.client += MSG_GetNumBytesRead( msg ) - bufStart;
+			break;
+		case svc_resource:
+			CL_ParseResource( msg );
+			break;
+		case svc_pings:
+			CL_UpdateUserPings( msg );
+			break;
+		case svc_particle:
+			CL_ParseParticles( msg );
+			break;
+		case svc_restoresound:
+			CL_ParseRestoreSoundPacket( msg );
+			cl.frames[cl.parsecountmod].graphdata.sound += MSG_GetNumBytesRead( msg ) - bufStart;
+			break;
+		case svc_spawnstatic:
+			CL_ParseStaticEntity( msg );
+			break;
+		case svc_event_reliable:
+			CL_ParseReliableEvent( msg );
+			cl.frames[cl.parsecountmod].graphdata.event += MSG_GetNumBytesRead( msg ) - bufStart;
+			break;
+		case svc_spawnbaseline:
+			CL_LegacyParseBaseline( msg );
+			break;
+		case svc_temp_entity:
+			CL_ParseTempEntity( msg );
+			cl.frames[cl.parsecountmod].graphdata.tentities += MSG_GetNumBytesRead( msg ) - bufStart;
+			break;
+		case svc_setpause:
+			cl.paused = ( MSG_ReadOneBit( msg ) != 0 );
+			break;
+		case svc_signonnum:
+			CL_ParseSignon( msg );
+			break;
+		case svc_centerprint:
+			CL_CenterPrint( MSG_ReadString( msg ), 0.25f );
+			break;
+		case svc_intermission:
+			cl.intermission = 1;
+			break;
+		case svc_legacy_modelindex:
+			CL_LegacyPrecacheModel( msg );
+
+			break;
+		case svc_legacy_soundindex:
+			CL_LegacyPrecacheSound( msg );
+			break;
+		case svc_cdtrack:
+			param1 = MSG_ReadByte( msg );
+			param1 = bound( 1, param1, MAX_CDTRACKS ); // tracknum
+			param2 = MSG_ReadByte( msg );
+			param2 = bound( 1, param2, MAX_CDTRACKS ); // loopnum
+			S_StartBackgroundTrack( clgame.cdtracks[param1-1], clgame.cdtracks[param2-1], 0, false );
+			break;
+		case svc_restore:
+			CL_ParseRestore( msg );
+			break;
+		case svc_legacy_eventindex:
+			//CL_ParseFinaleCutscene( msg, 3 );
+			CL_LegacyPrecacheEvent(msg);
+			break;
+		case svc_weaponanim:
+			param1 = MSG_ReadByte( msg );	// iAnim
+			param2 = MSG_ReadByte( msg );	// body
+			CL_WeaponAnim( param1, param2 );
+			break;
+		case svc_bspdecal:
+			CL_ParseStaticDecal( msg );
+			break;
+		case svc_roomtype:
+			param1 = MSG_ReadShort( msg );
+			Cvar_SetValue( "room_type", param1 );
+			break;
+		case svc_addangle:
+			CL_ParseAddAngle( msg );
+			break;
+		case svc_usermessage:
+			CL_RegisterUserMessage( msg );
+			break;
+		case svc_packetentities:
+			playerbytes = CL_ParsePacketEntities( msg, false );
+			cl.frames[cl.parsecountmod].graphdata.players += playerbytes;
+			cl.frames[cl.parsecountmod].graphdata.entities += MSG_GetNumBytesRead( msg ) - bufStart - playerbytes;
+			break;
+		case svc_deltapacketentities:
+			playerbytes = CL_ParsePacketEntities( msg, true );
+			cl.frames[cl.parsecountmod].graphdata.players += playerbytes;
+			cl.frames[cl.parsecountmod].graphdata.entities += MSG_GetNumBytesRead( msg ) - bufStart - playerbytes;
+			break;
+		case svc_legacy_chokecount:
+		{
+			int i, j;
+			i = MSG_ReadByte( msg );
+			j = cls.netchan.incoming_acknowledged - 1;
+			for( ; i > 0 && j > cls.netchan.outgoing_sequence - CL_UPDATE_BACKUP; j-- )
+			{
+				if( cl.frames[j & CL_UPDATE_MASK].receivedtime != -3.0 )
+				{
+					cl.frames[j & CL_UPDATE_MASK].receivedtime = -2.0;
+					i--;
+				}
+			}
+			break;
+		}
+			//cl.frames[cls.netchan.incoming_sequence & CL_UPDATE_MASK].choked = true;
+			//cl.frames[cls.netchan.incoming_sequence & CL_UPDATE_MASK].receivedtime = -2.0;
+			break;
+		case svc_resourcelist:
+			CL_ParseResourceList( msg );
+			break;
+		case svc_deltamovevars:
+			CL_ParseMovevars( msg );
+			break;
+		case svc_resourcerequest:
+			CL_ParseResourceRequest( msg );
+			break;
+		case svc_customization:
+			CL_ParseCustomization( msg );
+			break;
+		case svc_crosshairangle:
+			CL_ParseCrosshairAngle( msg );
+			break;
+		case svc_soundfade:
+			CL_ParseSoundFade( msg );
+			break;
+		case svc_filetxferfailed:
+			CL_ParseFileTransferFailed( msg );
+			break;
+		case svc_hltv:
+			CL_ParseHLTV( msg );
+			break;
+		case svc_director:
+			CL_ParseDirector( msg );
+			break;
+		case svc_voiceinit:
+			CL_ParseVoiceInit( msg );
+			break;
+		case svc_voicedata:
+			CL_ParseVoiceData( msg );
+			break;
+		case svc_resourcelocation:
+			CL_ParseResLocation( msg );
+			break;
+		case svc_querycvarvalue:
+			CL_ParseCvarValue( msg );
+			break;
+		case svc_querycvarvalue2:
+			CL_ParseCvarValue2( msg );
+			break;
+		default:
+			CL_ParseUserMessage( msg, cmd );
+			cl.frames[cl.parsecountmod].graphdata.usr += MSG_GetNumBytesRead( msg ) - bufStart;
+			break;
+		}
+	}
+
+	cl.frames[cl.parsecountmod].graphdata.msgbytes += MSG_GetNumBytesRead( msg ) - cls.starting_count;
+	CL_Parse_Debug( false ); // done
+
+	// we don't know if it is ok to save a demo message until
+	// after we have parsed the frame
+	if( !cls.demoplayback )
+	{
+		if( cls.demorecording && !cls.demowaiting )
+		{
+			CL_WriteDemoMessage( false, cls.starting_count, msg );
+		}
+		else if( cls.state != ca_active )
+		{
+			CL_WriteDemoMessage( true, cls.starting_count, msg );
+		}
+	}
+}
+
+void CL_LegacyPrecache_f( void )
+{
+	int	spawncount, i;
+	model_t *mod;
+
+	if( !cls.legacymode )
+		return;
+
+	spawncount = Q_atoi( Cmd_Argv( 1 ));
+
+	Con_Printf( "Setting up renderer...\n" );
+
+	// load tempent sprites (glowshell, muzzleflashes etc)
+	CL_LoadClientSprites ();
+
+	// invalidate all decal indexes
+	memset( cl.decal_index, 0, sizeof( cl.decal_index ));
+	cl.video_prepped = true;
+	cl.audio_prepped = true;
+	if( clgame.entities )
+		clgame.entities->model = cl.worldmodel;
+
+	// tell rendering system we have a new set of models.
+	R_NewMap ();
+
+	CL_SetupOverviewParams();
+
+	if( clgame.drawFuncs.R_NewMap != NULL )
+		clgame.drawFuncs.R_NewMap();
+
+	// release unused SpriteTextures
+	for( i = 1, mod = clgame.sprites; i < MAX_CLIENT_SPRITES; i++, mod++ )
+	{
+		if( mod->needload == NL_UNREFERENCED && COM_CheckString( mod->name ))
+			Mod_UnloadSpriteModel( mod );
+	}
+
+//	Mod_FreeUnused ();
+
+	if( host_developer.value <= DEV_NONE )
+		Con_ClearNotify(); // clear any lines of console text
+
+	// done with all resources, issue prespawn command.
+	// Include server count in case server disconnects and changes level during d/l
+	MSG_BeginClientCmd( &cls.netchan.message, clc_stringcmd );
+	MSG_WriteString( &cls.netchan.message, va( "begin %i", spawncount ));
+	cls.signon = SIGNONS;
+}

engine/client/cl_tent.c

@@ -2024,7 +2024,7 @@ void CL_ParseTempEntity( sizebuf_t *msg )
 {
 	sizebuf_t		buf;
 	byte		pbuf[256];
-	int		iSize = MSG_ReadWord( msg );
+	int		iSize = cls.legacymode?MSG_ReadByte( msg ):MSG_ReadWord( msg );
 	int		type, color, count, flags;
 	int		decalIndex, modelIndex, entityIndex;
 	float		scale, life, frameRate, vel, random;

engine/client/client.h

@@ -661,6 +661,7 @@ typedef struct
 	file_t		*demoheader;		// contain demo startup info in case we record a demo on this level
 	qboolean internetservers_wait;	// internetservers is waiting for dns request
 	qboolean internetservers_pending;	// internetservers is waiting for dns request
+	qboolean legacymode;				// one-way 48 protocol compatibility
 } client_static_t;
 
 #ifdef __cplusplus
@@ -873,6 +874,9 @@ _inline cl_entity_t *CL_EDICT_NUM( int n )
 // cl_parse.c
 //
 void CL_ParseServerMessage( sizebuf_t *msg, qboolean normal_message );
+void CL_ParseLegacyServerMessage( sizebuf_t *msg, qboolean normal_message );
+void CL_LegacyPrecache_f( void );
+
 void CL_ParseTempEntity( sizebuf_t *msg );
 void CL_StartResourceDownloading( const char *pszMessage, qboolean bCustom );
 qboolean CL_DispatchUserMessage( const char *pszName, int iSize, void *pbuf );

engine/common/net_buffer.c

@@ -645,7 +645,7 @@ qboolean MSG_ReadBytes( sizebuf_t *sb, void *pOut, int nBytes )
 
 char *MSG_ReadStringExt( sizebuf_t *sb, qboolean bLine )
 {
-	static char	string[2048];
+	static char	string[4096];
 	int		l = 0, c;
 	
 	do

engine/common/net_encode.c

@@ -81,6 +81,10 @@ static const delta_field_t pm_fields[] =
 { PHYS_DEF( skyvec_z )		},
 { PHYS_DEF( fog_settings )		},
 { PHYS_DEF( wateralpha )		},
+{ PHYS_DEF( skydir_x )		},
+{ PHYS_DEF( skydir_y )		},
+{ PHYS_DEF( skydir_z )		},
+{ PHYS_DEF( skyangle )		},
 { NULL },
 };
 
@@ -511,12 +515,23 @@ void Delta_ParseTableField( sizebuf_t *msg )
 
 	tableIndex = MSG_ReadUBitLong( msg, 4 );
 	dt = Delta_FindStructByIndex( tableIndex );
-
-	Assert( dt != NULL );
+	if( !dt )
+		Host_Error( "Delta_ParseTableField: not initialized" );
 
 	nameIndex = MSG_ReadUBitLong( msg, 8 );	// read field name index		
-	Assert( nameIndex >= 0 && nameIndex < dt->maxFields );
+	if( !( nameIndex >= 0 && nameIndex < dt->maxFields ) )
+	{
+		Con_Reportf( "Delta_ParseTableField: wrong nameIndex %d for table %s, ignoring\n", nameIndex,  dt->pName );
+		MSG_ReadUBitLong( msg, 10 );
+		MSG_ReadUBitLong( msg, 5 ) + 1;
+		if( MSG_ReadOneBit( msg ))
+			MSG_ReadFloat( msg );
+		if( MSG_ReadOneBit( msg ))
+			MSG_ReadFloat( msg );
+		return;
+	}
 	pName = dt->pInfo[nameIndex].name;
+
 	flags = MSG_ReadUBitLong( msg, 10 );
 	bits = MSG_ReadUBitLong( msg, 5 ) + 1;
 
@@ -1600,7 +1615,7 @@ void MSG_ReadClientData( sizebuf_t *msg, clientdata_t *from, clientdata_t *to, f
 
 	*to = *from;
 
-	if( !MSG_ReadOneBit( msg ))
+	if( !cls.legacymode && !MSG_ReadOneBit( msg ))
 		return; // we have no changes
 
 	// process fields
@@ -1839,6 +1854,8 @@ qboolean MSG_ReadDeltaEntity( sizebuf_t *msg, entity_state_t *from, entity_state
 		Host_Error( "MSG_ReadDeltaEntity: unknown update type %i\n", fRemoveType );
 	}
 
+	if( !cls.legacymode )
+	{
 		if( MSG_ReadOneBit( msg ))
 			baseline_offset = MSG_ReadSBitLong( msg, 7 );
 
@@ -1861,7 +1878,7 @@ qboolean MSG_ReadDeltaEntity( sizebuf_t *msg, entity_state_t *from, entity_state
 					from = &cl.instanced_baseline[baseline_offset];
 			}
 		}
-
+		}
 	// g-cont. probably is redundant
 	*to = *from;
 
@@ -1869,7 +1886,7 @@ qboolean MSG_ReadDeltaEntity( sizebuf_t *msg, entity_state_t *from, entity_state
 		to->entityType = MSG_ReadUBitLong( msg, 2 );
 	to->number = number;
 
-	if( FBitSet( to->entityType, ENTITY_BEAM ))
+	if( cls.legacymode?(to->entityType == ENTITY_BEAM):FBitSet(to->entityType, ENTITY_BEAM) )
 	{
 		dt = Delta_FindStruct( "custom_entity_state_t" );
 	}

engine/common/protocol.h

@@ -243,4 +243,18 @@ GNU General Public License for more details.
 extern const char	*svc_strings[svc_lastmsg+1];
 extern const char	*clc_strings[clc_lastmsg+1];
 
+// legacy protocol definitons
+#define PROTOCOL_LEGACY_VERSION		48
+#define svc_legacy_modelindex		31	// [index][modelpath]
+#define svc_legacy_soundindex		28	// [index][soundpath]
+#define svc_legacy_eventindex		34	// [index][eventname]
+#define svc_legacy_ambientsound		29
+#define svc_legacy_chokecount 42		// old client specified count, new just sends svc_choke
+#define svc_legacy_event			27	// playback event queue
+#define svc_legacy_changing			3	// changelevel by server request
+
+#define SND_LEGACY_LARGE_INDEX		(1<<2)	// a send sound as short
+#define MAX_LEGACY_ENTITY_BITS		12
+#define MAX_LEGACY_WEAPON_BITS		5
+#define MAX_LEGACY_MODEL_BITS 11
 #endif//NET_PROTOCOL_H

pm_shared/pm_movevars.h

@@ -43,6 +43,10 @@ struct movevars_s
 	int	features;		// engine features that shared across network
 	int	fog_settings;	// Global fog settings (packed color+density) 
 	float	wateralpha;	// World water alpha 1.0 - solid 0.0 - transparent
+	float	skydir_x;		// skybox rotate direction
+	float	skydir_y;		//
+	float	skydir_z;		//
+	float	skyangle;		// skybox rotate angle
 };
 
 extern movevars_t movevars;