newtree/source/cl_parse.c

/*
	cl_parse.c

	parse a message received from the server

	Copyright (C) 1996-1997  Id Software, Inc.

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License
	as published by the Free Software Foundation; either version 2
	of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

	See the GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

	$Id$
*/

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include "host.h"
#include "sys.h"
#include "client.h"
#include "cmd.h"
#include "screen.h"
#include "cdaudio.h"
#include "bothdefs.h"
#include "console.h"
#include "msg.h"
#include "va.h"
#include "pmove.h"
#include "sbar.h"
#include "teamplay.h"
#include "cl_parse.h"
#include "cl_main.h"
#include "skin.h"
#include "cl_ents.h"
#include "cl_tent.h"
#include "cl_input.h"
#include "view.h"

#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

extern cvar_t *gl_flashblend;
extern cvar_t *cl_autoexec;

char       *svc_strings[] = {
	"svc_bad",
	"svc_nop",
	"svc_disconnect",
	"svc_updatestat",
	"svc_version",						// [long] server version
	"svc_setview",						// [short] entity number
	"svc_sound",						// <see code>
	"svc_time",							// [float] server time
	"svc_print",						// [string] null terminated string
	"svc_stufftext",					// [string] stuffed into client's
										// console buffer
	// the string should be \n terminated
	"svc_setangle",						// [vec3] set the view angle to this
										// absolute value

	"svc_serverdata",					// [long] version ...
	"svc_lightstyle",					// [byte] [string]
	"svc_updatename",					// [byte] [string]
	"svc_updatefrags",					// [byte] [short]
	"svc_clientdata",					// <shortbits + data>
	"svc_stopsound",					// <see code>
	"svc_updatecolors",					// [byte] [byte]
	"svc_particle",						// [vec3] <variable>
	"svc_damage",						// [byte] impact [byte] blood [vec3]
										// from

	"svc_spawnstatic",
	"OBSOLETE svc_spawnbinary",
	"svc_spawnbaseline",

	"svc_temp_entity",					// <variable>
	"svc_setpause",
	"svc_signonnum",
	"svc_centerprint",
	"svc_killedmonster",
	"svc_foundsecret",
	"svc_spawnstaticsound",
	"svc_intermission",
	"svc_finale",

	"svc_cdtrack",
	"svc_sellscreen",

	"svc_smallkick",
	"svc_bigkick",

	"svc_updateping",
	"svc_updateentertime",

	"svc_updatestatlong",
	"svc_muzzleflash",
	"svc_updateuserinfo",
	"svc_download",
	"svc_playerinfo",
	"svc_nails",
	"svc_choke",
	"svc_modellist",
	"svc_soundlist",
	"svc_packetentities",
	"svc_deltapacketentities",
	"svc_maxspeed",
	"svc_entgravity",

	"svc_setinfo",
	"svc_serverinfo",
	"svc_updatepl",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL",
	"NEW PROTOCOL"
};

int         oldparsecountmod;
int         parsecountmod;
double      parsecounttime;

int         cl_spikeindex, cl_playerindex, cl_flagindex;
int         cl_h_playerindex, cl_gib1index, cl_gib2index, cl_gib3index;

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

int         packet_latency[NET_TIMINGS];

int
CL_CalcNet (void)
{
	int         a, i;
	frame_t    *frame;
	int         lost;

	for (i = cls.netchan.outgoing_sequence - UPDATE_BACKUP + 1;
		 i <= cls.netchan.outgoing_sequence; i++) {
		frame = &cl.frames[i & UPDATE_MASK];
		if (frame->receivedtime == -1)
			packet_latency[i & NET_TIMINGSMASK] = 9999;	// dropped
		else if (frame->receivedtime == -2)
			packet_latency[i & NET_TIMINGSMASK] = 10000;	// choked
		else if (frame->invalid)
			packet_latency[i & NET_TIMINGSMASK] = 9998;	// invalid delta
		else
			packet_latency[i & NET_TIMINGSMASK] =
				(frame->receivedtime - frame->senttime) * 20;
	}

	lost = 0;
	for (a = 0; a < NET_TIMINGS; a++) {
		i = (cls.netchan.outgoing_sequence - a) & NET_TIMINGSMASK;
		if (packet_latency[i] == 9999)
			lost++;
	}
	return lost * 100 / NET_TIMINGS;
}

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

/*
===============
CL_CheckOrDownloadFile

Returns true if the file exists, otherwise it attempts
to start a download from the server.
===============
*/
qboolean
CL_CheckOrDownloadFile (char *filename)
{
	QFile      *f;

	if (strstr (filename, "..")) {
		Con_Printf ("Refusing to download a path with ..\n");
		return true;
	}

	if (!snd_initialized && strnequal ("sound/", filename, 6)) {
		// don't bother downloading sownds if we can't play them
		return true;
	}

	COM_FOpenFile (filename, &f);
	if (f) {							// it exists, no need to download
		Qclose (f);
		return true;
	}
	// ZOID - can't download when recording
	if (cls.demorecording) {
		Con_Printf ("Unable to download %s in record mode.\n",
					cls.downloadname);
		return true;
	}
	// ZOID - can't download when playback
	if (cls.demoplayback)
		return true;

	strcpy (cls.downloadname, filename);
	Con_Printf ("Downloading %s...\n", cls.downloadname);

	// download to a temp name, and only rename
	// to the real name when done, so if interrupted
	// a runt file wont be left
	COM_StripExtension (cls.downloadname, cls.downloadtempname);
	strncat (cls.downloadtempname, ".tmp",
			 sizeof (cls.downloadtempname) - strlen (cls.downloadtempname));

	MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
	MSG_WriteString (&cls.netchan.message,
					 va ("download %s", cls.downloadname));

	cls.downloadnumber++;

	return false;
}

/*
=================
Model_NextDownload
=================
*/
void
Model_NextDownload (void)
{
	char       *s;
	int         i;
	extern char gamedirfile[];

	if (cls.downloadnumber == 0) {
		Con_Printf ("Checking models...\n");
		cls.downloadnumber = 1;
	}

	cls.downloadtype = dl_model;
	for (; cl.model_name[cls.downloadnumber][0];
		 cls.downloadnumber++) {
		s = cl.model_name[cls.downloadnumber];
		if (s[0] == '*')
			continue;					// inline brush model
		if (!CL_CheckOrDownloadFile (s))
			return;						// started a download
	}

	for (i = 1; i < MAX_MODELS; i++) {
		if (!cl.model_name[i][0])
			break;

		cl.model_precache[i] = Mod_ForName (cl.model_name[i], false);

		if (!cl.model_precache[i]) {
			Con_Printf
				("\nThe required model file '%s' could not be found or downloaded.\n\n",
				 cl.model_name[i]);
			Con_Printf ("You may need to download or purchase a %s client "
						"pack in order to play on this server.\n\n",
						gamedirfile);
			CL_Disconnect ();
			return;
		}
	}

	// all done
	cl.worldmodel = cl.model_precache[1];
	R_NewMap ();
	Team_NewMap ();
	Hunk_Check ();						// make sure nothing is hurt

	// done with modellist, request first of static signon messages
	MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
//  MSG_WriteString (&cls.netchan.message, va("prespawn %i 0 %i", cl.servercount, cl.worldmodel->checksum2));
	MSG_WriteString (&cls.netchan.message,
					 va (prespawn_name, cl.servercount,
						 cl.worldmodel->checksum2));
}

/*
=================
Sound_NextDownload
=================
*/
void
Sound_NextDownload (void)
{
	char       *s;
	int         i;

	if (cls.downloadnumber == 0) {
		Con_Printf ("Checking sounds...\n");
		cls.downloadnumber = 1;
	}

	cls.downloadtype = dl_sound;
	for (; cl.sound_name[cls.downloadnumber][0];
		 cls.downloadnumber++) {
		s = cl.sound_name[cls.downloadnumber];
		if (!CL_CheckOrDownloadFile (va ("sound/%s", s)))
			return;						// started a download
	}

	for (i = 1; i < MAX_SOUNDS; i++) {
		if (!cl.sound_name[i][0])
			break;
		cl.sound_precache[i] = S_PrecacheSound (cl.sound_name[i]);
	}

	// done with sounds, request models now
	memset (cl.model_precache, 0, sizeof (cl.model_precache));
	cl_playerindex = -1;
	cl_spikeindex = -1;
	cl_flagindex = -1;
	cl_h_playerindex = -1;
	cl_gib1index = cl_gib2index = cl_gib3index = -1;
	MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
//  MSG_WriteString (&cls.netchan.message, va("modellist %i 0", cl.servercount));
	MSG_WriteString (&cls.netchan.message,
					 va (modellist_name, cl.servercount, 0));
}


/*
======================
CL_RequestNextDownload
======================
*/
void
CL_RequestNextDownload (void)
{
	switch (cls.downloadtype) {
		case dl_single:
			break;
		case dl_skin:
			Skin_NextDownload ();
			break;
		case dl_model:
			Model_NextDownload ();
			break;
		case dl_sound:
			Sound_NextDownload ();
			break;
		case dl_none:
		default:
			Con_DPrintf ("Unknown download type.\n");
	}
}

/*
=====================
CL_ParseDownload

A download message has been received from the server
=====================
*/
void
CL_ParseDownload (void)
{
	int         size, percent;
	byte        name[1024];
	int         r;


	// read the data
	size = MSG_ReadShort ();
	percent = MSG_ReadByte ();

	if (cls.demoplayback) {
		if (size > 0)
			msg_readcount += size;
		return;							// not in demo playback
	}

	if (size == -1) {
		Con_Printf ("File not found.\n");
		if (cls.download) {
			Con_Printf ("cls.download shouldn't have been set\n");
			Qclose (cls.download);
			cls.download = NULL;
		}
		CL_RequestNextDownload ();
		return;
	}

	if (size == -2) {
		char       *newname = MSG_ReadString ();

		if (strncmp (newname, cls.downloadname, strlen (cls.downloadname))
			|| strstr (newname + strlen (cls.downloadname), "/")) {
			Con_Printf
				("WARNING: server tried to give a strange new name: %s\n",
				 newname);
			CL_RequestNextDownload ();
			return;
		}
		if (cls.download) {
			Qclose (cls.download);
			unlink (cls.downloadname);
		}
		strncpy (cls.downloadname, newname, sizeof (cls.downloadname));
		Con_Printf ("downloading to %s\n", cls.downloadname);
		return;
	}
	// open the file if not opened yet
	if (!cls.download) {
		if (strncmp (cls.downloadtempname, "skins/", 6))
			snprintf (name, sizeof (name), "%s/%s", com_gamedir,
					  cls.downloadtempname);
		else
			snprintf (name, sizeof (name), "%s/qw/%s", fs_userpath->string,
					  cls.downloadtempname);

		COM_CreatePath (name);

		cls.download = Qopen (name, "wb");
		if (!cls.download) {
			msg_readcount += size;
			Con_Printf ("Failed to open %s\n", cls.downloadtempname);
			CL_RequestNextDownload ();
			return;
		}
	}

	Qwrite (cls.download, net_message.data + msg_readcount, size);
	msg_readcount += size;

	if (percent != 100) {
// change display routines by zoid
		// request next block
#if 0
		Con_Printf (".");
		if (10 * (percent / 10) != cls.downloadpercent) {
			cls.downloadpercent = 10 * (percent / 10);
			Con_Printf ("%i%%", cls.downloadpercent);
		}
#endif
		if (percent != cls.downloadpercent)
			VID_SetCaption (va
							("Downloading %s %d%%", cls.downloadname, percent));
		cls.downloadpercent = percent;

		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
		SZ_Print (&cls.netchan.message, "nextdl");
	} else {
		char        oldn[MAX_OSPATH];
		char        newn[MAX_OSPATH];

#if 0
		Con_Printf ("100%%\n");
#endif

		Qclose (cls.download);
		VID_SetCaption (va ("Connecting to %s", cls.servername));

		// rename the temp file to it's final name
		if (strcmp (cls.downloadtempname, cls.downloadname)) {
			if (strncmp (cls.downloadtempname, "skins/", 6)) {
				snprintf (oldn, sizeof (oldn), "%s/%s", com_gamedir,
						  cls.downloadtempname);
				snprintf (newn, sizeof (newn), "%s/%s", com_gamedir,
						  cls.downloadname);
			} else {
				snprintf (oldn, sizeof (oldn), "%s/qw/%s", fs_userpath->string,
						  cls.downloadtempname);
				snprintf (newn, sizeof (newn), "%s/qw/%s", fs_userpath->string,
						  cls.downloadname);
			}
			r = Qrename (oldn, newn);
			if (r)
				Con_Printf ("failed to rename, %s.\n", strerror (errno));
		}

		cls.download = NULL;
		cls.downloadpercent = 0;

		// get another file if needed

		CL_RequestNextDownload ();
	}
}

static byte *upload_data;
static int  upload_pos;
static int  upload_size;

void
CL_NextUpload (void)
{
	byte        buffer[1024];
	int         r;
	int         percent;
	int         size;

	if (!upload_data)
		return;

	r = upload_size - upload_pos;
	if (r > 768)
		r = 768;
	memcpy (buffer, upload_data + upload_pos, r);
	MSG_WriteByte (&cls.netchan.message, clc_upload);
	MSG_WriteShort (&cls.netchan.message, r);

	upload_pos += r;
	size = upload_size;
	if (!size)
		size = 1;
	percent = upload_pos * 100 / size;
	MSG_WriteByte (&cls.netchan.message, percent);
	SZ_Write (&cls.netchan.message, buffer, r);

	Con_DPrintf ("UPLOAD: %6d: %d written\n", upload_pos - r, r);

	if (upload_pos != upload_size)
		return;

	Con_Printf ("Upload completed\n");

	free (upload_data);
	upload_data = 0;
	upload_pos = upload_size = 0;
}

void
CL_StartUpload (byte * data, int size)
{
	if (cls.state < ca_onserver)
		return;							// gotta be connected

	// override
	if (upload_data)
		free (upload_data);

	Con_DPrintf ("Upload starting of %d...\n", size);

	upload_data = malloc (size);
	memcpy (upload_data, data, size);
	upload_size = size;
	upload_pos = 0;

	CL_NextUpload ();
}

qboolean
CL_IsUploading (void)
{
	if (upload_data)
		return true;
	return false;
}

void
CL_StopUpload (void)
{
	if (upload_data)
		free (upload_data);
	upload_data = NULL;
}

/*
=====================================================================

  SERVER CONNECTING MESSAGES

=====================================================================
*/

void Draw_ClearCache (void);

void CL_ClearBaselines (void);		// LordHavoc: BIG BUG-FIX!

/*
==================
CL_ParseServerData
==================
*/
void
CL_ParseServerData (void)
{
	char       *str;
	char        fn[MAX_OSPATH];
	qboolean    cflag = false;
	extern char gamedirfile[MAX_OSPATH];
	int         protover;

	Con_DPrintf ("Serverdata packet received.\n");
//
// wipe the client_state_t struct
//
	CL_ClearState ();

// parse protocol version number
// allow 2.2 and 2.29 demos to play
	protover = MSG_ReadLong ();
	if (protover != PROTOCOL_VERSION &&
		!(cls.demoplayback
		  && (protover == 26 || protover == 27
			  || protover ==
			  28)))
			Host_EndGame
			("Server returned version %i, not %i\nYou probably need to upgrade.\nCheck http://www.quakeworld.net/",
			 protover, PROTOCOL_VERSION);

	cl.servercount = MSG_ReadLong ();

	// game directory
	str = MSG_ReadString ();

	if (stricmp (gamedirfile, str)) {
		// save current config
		Host_WriteConfiguration ();
		cflag = true;
		Draw_ClearCache ();
	}

	COM_Gamedir (str);

	// ZOID--run the autoexec.cfg in the gamedir
	// if it exists
	if (cflag) {
		int         cl_warncmd_val = cl_warncmd->int_val;

		Cbuf_AddText ("cl_warncmd 0\n");
		Cbuf_AddText ("exec config.cfg\n");
		Cbuf_AddText ("exec frontend.cfg\n");
		if (cl_autoexec->int_val) {
			Cbuf_AddText ("exec autoexec.cfg\n");
		}
		snprintf (fn, sizeof (fn), "cl_warncmd %d\n", cl_warncmd_val);
		Cbuf_AddText (fn);
	}
	// parse player slot, high bit means spectator
	cl.playernum = MSG_ReadByte ();
	if (cl.playernum & 128) {
		cl.spectator = true;
		cl.playernum &= ~128;
	}
	// get the full level name
	str = MSG_ReadString ();
	strncpy (cl.levelname, str, sizeof (cl.levelname) - 1);

	// get the movevars
	movevars.gravity = MSG_ReadFloat ();
	movevars.stopspeed = MSG_ReadFloat ();
	movevars.maxspeed = MSG_ReadFloat ();
	movevars.spectatormaxspeed = MSG_ReadFloat ();
	movevars.accelerate = MSG_ReadFloat ();
	movevars.airaccelerate = MSG_ReadFloat ();
	movevars.wateraccelerate = MSG_ReadFloat ();
	movevars.friction = MSG_ReadFloat ();
	movevars.waterfriction = MSG_ReadFloat ();
	movevars.entgravity = MSG_ReadFloat ();

	// seperate the printfs so the server message can have a color
	Con_Printf
		("\n\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\n");
	Con_Printf ("%c%s\n", 2, str);

	// ask for the sound list next
	memset (cl.sound_name, 0, sizeof (cl.sound_name));
	MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
//  MSG_WriteString (&cls.netchan.message, va("soundlist %i 0", cl.servercount));
	MSG_WriteString (&cls.netchan.message,
					 va (soundlist_name, cl.servercount, 0));

	// now waiting for downloads, etc
	cls.state = ca_onserver;

	CL_ClearBaselines ();
}

// LordHavoc: BIG BUG-FIX!  Clear baselines each time it connects...
void
CL_ClearBaselines (void)
{
	int         i;

	memset (cl_baselines, 0, sizeof (cl_baselines));
	for (i = 0; i < MAX_EDICTS; i++) {
		cl_baselines[i].alpha = 255;
		cl_baselines[i].scale = 16;
		cl_baselines[i].glowcolor = 254;
		cl_baselines[i].glowsize = 0;
		cl_baselines[i].colormod = 255;
	}
}

/*
==================
CL_ParseSoundlist
==================
*/
void
CL_ParseSoundlist (void)
{
	int         numsounds;
	char       *str;
	int         n;

// precache sounds
//  memset (cl.sound_precache, 0, sizeof(cl.sound_precache));

	numsounds = MSG_ReadByte ();

	for (;;) {
		str = MSG_ReadString ();
		if (!str[0])
			break;
		numsounds++;
		if (numsounds == MAX_SOUNDS)
			Host_EndGame ("Server sent too many sound_precache");
		strcpy (cl.sound_name[numsounds], str);
	}

	n = MSG_ReadByte ();

	if (n) {
		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
//      MSG_WriteString (&cls.netchan.message, va("soundlist %i %i", cl.servercount, n));
		MSG_WriteString (&cls.netchan.message,
						 va (soundlist_name, cl.servercount, n));
		return;
	}

	cls.downloadnumber = 0;
	cls.downloadtype = dl_sound;
	Sound_NextDownload ();
}

/*
==================
CL_ParseModellist
==================
*/
void
CL_ParseModellist (void)
{
	int         nummodels;
	char       *str;
	int         n;

// precache models and note certain default indexes
	nummodels = MSG_ReadByte ();

	for (;;) {
		str = MSG_ReadString ();
		if (!str[0])
			break;
		nummodels++;
		if (nummodels == MAX_MODELS)
			Host_EndGame ("Server sent too many model_precache");
		strcpy (cl.model_name[nummodels], str);

		if (!strcmp (cl.model_name[nummodels], "progs/spike.mdl"))
			cl_spikeindex = nummodels;
		else if (!strcmp (cl.model_name[nummodels], "progs/player.mdl"))
			cl_playerindex = nummodels;
		else if (!strcmp (cl.model_name[nummodels], "progs/flag.mdl"))
			cl_flagindex = nummodels;
		// for deadbodyfilter &gibfilter
		else if (!strcmp (cl.model_name[nummodels], "progs/h_player.mdl"))
			cl_h_playerindex = nummodels;
		else if (!strcmp (cl.model_name[nummodels], "progs/gib1.mdl"))
			cl_gib1index = nummodels;
		else if (!strcmp (cl.model_name[nummodels], "progs/gib2.mdl"))
			cl_gib2index = nummodels;
		else if (!strcmp (cl.model_name[nummodels], "progs/gib3.mdl"))
			cl_gib3index = nummodels;
	}

	n = MSG_ReadByte ();

	if (n) {
		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
//      MSG_WriteString (&cls.netchan.message, va("modellist %i %i", cl.servercount, n));
		MSG_WriteString (&cls.netchan.message,
						 va (modellist_name, cl.servercount, n));
		return;
	}

	cls.downloadnumber = 0;
	cls.downloadtype = dl_model;
	Model_NextDownload ();
}

/*
==================
CL_ParseBaseline
==================
*/
void
CL_ParseBaseline (entity_state_t *es)
{
	int         i;

	es->modelindex = MSG_ReadByte ();
	es->frame = MSG_ReadByte ();
	es->colormap = MSG_ReadByte ();
	es->skinnum = MSG_ReadByte ();
	for (i = 0; i < 3; i++) {
		es->origin[i] = MSG_ReadCoord ();
		es->angles[i] = MSG_ReadAngle ();
	}
	// LordHavoc: set up the baseline to account for new effects (alpha,
	// colormod, etc)
	es->alpha = 255;
	es->scale = 16;
	es->glowcolor = 254;
	es->glowsize = 0;
	es->colormod = 255;
}



/*
=====================
CL_ParseStatic

Static entities are non-interactive world objects
like torches
=====================
*/
void
CL_ParseStatic (void)
{
	entity_t   *ent;
	entity_state_t es;

	CL_ParseBaseline (&es);

	if (cl.num_statics >= MAX_STATIC_ENTITIES)
		Host_EndGame ("Too many static entities");
	ent = &cl_static_entities[cl.num_statics++];
	CL_Init_Entity (ent);

	// copy it to the current state
	ent->model = cl.model_precache[es.modelindex];
	ent->frame = es.frame;
	ent->skinnum = es.skinnum;

	VectorCopy (es.origin, ent->origin);
	VectorCopy (es.angles, ent->angles);

	R_AddEfrags (ent);
}

/*
===================
CL_ParseStaticSound
===================
*/
void
CL_ParseStaticSound (void)
{
	vec3_t      org;
	int         sound_num, vol, atten;
	int         i;

	for (i = 0; i < 3; i++)
		org[i] = MSG_ReadCoord ();
	sound_num = MSG_ReadByte ();
	vol = MSG_ReadByte ();
	atten = MSG_ReadByte ();

	S_StaticSound (cl.sound_precache[sound_num], org, vol, atten);
}



/*
=====================================================================

ACTION MESSAGES

=====================================================================
*/

/*
==================
CL_ParseStartSoundPacket
==================
*/
void
CL_ParseStartSoundPacket (void)
{
	vec3_t      pos;
	int         channel, ent;
	int         sound_num;
	int         volume;
	float       attenuation;
	int         i;

	channel = MSG_ReadShort ();

	if (channel & SND_VOLUME)
		volume = MSG_ReadByte ();
	else
		volume = DEFAULT_SOUND_PACKET_VOLUME;

	if (channel & SND_ATTENUATION)
		attenuation = MSG_ReadByte () / 64.0;
	else
		attenuation = DEFAULT_SOUND_PACKET_ATTENUATION;

	sound_num = MSG_ReadByte ();

	for (i = 0; i < 3; i++)
		pos[i] = MSG_ReadCoord ();

	ent = (channel >> 3) & 1023;
	channel &= 7;

	if (ent > MAX_EDICTS)
		Host_EndGame ("CL_ParseStartSoundPacket: ent = %i", ent);

	S_StartSound (ent, channel, cl.sound_precache[sound_num], pos,
				  volume / 255.0, attenuation);
}


/*
==================
CL_ParseClientdata

Server information pertaining to this client only, sent every frame
==================
*/
void
CL_ParseClientdata (void)
{
	int         i;
	float       latency;
	frame_t    *frame;

// calculate simulated time of message
	oldparsecountmod = parsecountmod;

	i = cls.netchan.incoming_acknowledged;
	cl.parsecount = i;
	i &= UPDATE_MASK;
	parsecountmod = i;
	frame = &cl.frames[i];
	parsecounttime = cl.frames[i].senttime;

	frame->receivedtime = realtime;

// calculate latency
	latency = frame->receivedtime - frame->senttime;

	if (latency < 0 || latency > 1.0) {
//      Con_Printf ("Odd latency: %5.2f\n", latency);
	} else {
		// drift the average latency towards the observed latency
		if (latency < cls.latency)
			cls.latency = latency;
		else
			cls.latency += 0.001;		// drift up, so correction are needed
	}
}

/*
==============
CL_UpdateUserinfo
==============
*/
void
CL_ProcessUserInfo (int slot, player_info_t *player)
{
	strncpy (player->name, Info_ValueForKey (player->userinfo, "name"),
			 sizeof (player->name) - 1);
	player->topcolor = atoi (Info_ValueForKey (player->userinfo, "topcolor"));
	player->bottomcolor =
		atoi (Info_ValueForKey (player->userinfo, "bottomcolor"));
	if (Info_ValueForKey (player->userinfo, "*spectator")[0])
		player->spectator = true;
	else
		player->spectator = false;

	if (cls.state == ca_active)
		Skin_Find (player);

	Sbar_Changed ();
	CL_NewTranslation (slot);
}

/*
==============
CL_UpdateUserinfo
==============
*/
void
CL_UpdateUserinfo (void)
{
	int         slot;
	player_info_t *player;

	slot = MSG_ReadByte ();
	if (slot >= MAX_CLIENTS)
		Host_EndGame
			("CL_ParseServerMessage: svc_updateuserinfo > MAX_SCOREBOARD");

	player = &cl.players[slot];
	player->userid = MSG_ReadLong ();
	strncpy (player->userinfo, MSG_ReadString (),
			 sizeof (player->userinfo) - 1);

	CL_ProcessUserInfo (slot, player);
}

/*
==============
CL_SetInfo
==============
*/
void
CL_SetInfo (void)
{
	int         slot;
	player_info_t *player;
	char        key[MAX_MSGLEN];
	char        value[MAX_MSGLEN];

	slot = MSG_ReadByte ();
	if (slot >= MAX_CLIENTS)
		Host_EndGame ("CL_ParseServerMessage: svc_setinfo > MAX_SCOREBOARD");

	player = &cl.players[slot];

	strncpy (key, MSG_ReadString (), sizeof (key) - 1);
	key[sizeof (key) - 1] = 0;
	strncpy (value, MSG_ReadString (), sizeof (value) - 1);
	key[sizeof (value) - 1] = 0;

	Con_DPrintf ("SETINFO %s: %s=%s\n", player->name, key, value);

	Info_SetValueForKey (player->userinfo, key, value, MAX_INFO_STRING);

	CL_ProcessUserInfo (slot, player);
}

/*
==============
CL_ServerInfo
==============
*/
void
CL_ServerInfo (void)
{
	char        key[MAX_MSGLEN];
	char        value[MAX_MSGLEN];

	strncpy (key, MSG_ReadString (), sizeof (key) - 1);
	key[sizeof (key) - 1] = 0;
	strncpy (value, MSG_ReadString (), sizeof (value) - 1);
	key[sizeof (value) - 1] = 0;

	Con_DPrintf ("SERVERINFO: %s=%s\n", key, value);

	Info_SetValueForKey (cl.serverinfo, key, value, MAX_SERVERINFO_STRING);
}

/*
=====================
CL_SetStat
=====================
*/
void
CL_SetStat (int stat, int value)
{
	int         j;

	if (stat < 0 || stat >= MAX_CL_STATS)
//      Sys_Error ("CL_SetStat: %i is invalid", stat);
		Host_EndGame ("CL_SetStat: %i is invalid", stat);

	Sbar_Changed ();

	switch (stat) {
		case STAT_ITEMS:				// set flash times
			Sbar_Changed ();
			for (j = 0; j < 32; j++)
				if ((value & (1 << j)) && !(cl.stats[stat] & (1 << j)))
					cl.item_gettime[j] = cl.time;
			break;
		case STAT_HEALTH:
			if (value <= 0)
				Team_Dead ();
			break;
	}

	cl.stats[stat] = value;
}

/*
==============
CL_MuzzleFlash
==============
*/
void
CL_MuzzleFlash (void)
{
	vec3_t      fv, rv, uv;
	dlight_t   *dl;
	int         i;
	player_state_t *pl;

	i = MSG_ReadShort ();

	if ((unsigned int) (i - 1) >= MAX_CLIENTS)
		return;

	pl = &cl.frames[parsecountmod].playerstate[i - 1];

	dl = CL_AllocDlight (i);
	VectorCopy (pl->origin, dl->origin);
	AngleVectors (pl->viewangles, fv, rv, uv);

	VectorMA (dl->origin, 18, fv, dl->origin);
	dl->radius = 200 + (rand () & 31);
	dl->minlight = 32;
	dl->die = cl.time + 0.1;
	dl->color[0] = 0.2;
	dl->color[1] = 0.1;
	dl->color[2] = 0.05;
}


#define SHOWNET(x) if (cl_shownet->int_val == 2) Con_Printf ("%3i:%s\n", msg_readcount-1, x);
/*
=====================
CL_ParseServerMessage
=====================
*/
int         received_framecount;
void
CL_ParseServerMessage (void)
{
	int         cmd;
	char       *s;
	int         i, j;

	received_framecount = host_framecount;
	cl.last_servermessage = realtime;
	CL_ClearProjectiles ();

//
// if recording demos, copy the message out
//
	if (cl_shownet->int_val == 1)
		Con_Printf ("%i ", net_message.cursize);
	else if (cl_shownet->int_val == 2)
		Con_Printf ("------------------\n");


	CL_ParseClientdata ();

//
// parse the message
//
	while (1) {
		if (msg_badread) {
			Host_EndGame ("CL_ParseServerMessage: Bad server message");
			break;
		}

		cmd = MSG_ReadByte ();

		if (cmd == -1) {
			msg_readcount++;			// so the EOM showner has the right
										// value
			SHOWNET ("END OF MESSAGE");
			break;
		}

		SHOWNET (svc_strings[cmd]);

		// other commands
		switch (cmd) {
			default:
				Host_EndGame
					("CL_ParseServerMessage: Illegible server message");
				break;

			case svc_nop:
//          Con_Printf ("svc_nop\n");
				break;

			case svc_disconnect:
				if (cls.state == ca_connected)
					Host_EndGame ("Server disconnected\n"
								  "Server version may not be compatible");
				else
					Host_EndGame ("Server disconnected");
				break;

			case svc_print:
				i = MSG_ReadByte ();
				s = MSG_ReadString ();
				if (i == PRINT_CHAT) {
					// TODO: cl_nofake 2 -- accept fake messages from
					// teammates
					char       *p;

					if (cl_nofake->int_val) {
						for (p = s; *p; p++)
							if (*p == 13)
								*p = '#';
					}
					con_ormask = 128;
					S_LocalSound ("misc/talk.wav");
				}
				Con_Printf ("%s", s);
				con_ormask = 0;
				break;

			case svc_centerprint:
				SCR_CenterPrint (MSG_ReadString ());
				break;

			case svc_stufftext:
				s = MSG_ReadString ();
				Con_DPrintf ("stufftext: %s\n", s);
				Cbuf_AddText (s);
				break;

			case svc_damage:
				V_ParseDamage ();
				break;

			case svc_serverdata:
				Cbuf_Execute ();		// make sure any stuffed commands are 
										// done
				CL_ParseServerData ();
				vid.recalc_refdef = true;	// leave full screen intermission
				break;

			case svc_setangle:
				for (i = 0; i < 3; i++)
					cl.viewangles[i] = MSG_ReadAngle ();
//          cl.viewangles[PITCH] = cl.viewangles[ROLL] = 0;
				break;

			case svc_lightstyle:
				i = MSG_ReadByte ();
				if (i >= MAX_LIGHTSTYLES)
//              Sys_Error ("svc_lightstyle > MAX_LIGHTSTYLES");
					Host_EndGame ("svc_lightstyle > MAX_LIGHTSTYLES");
				strcpy (cl_lightstyle[i].map, MSG_ReadString ());
				cl_lightstyle[i].length = strlen (cl_lightstyle[i].map);
				break;

			case svc_sound:
				CL_ParseStartSoundPacket ();
				break;

			case svc_stopsound:
				i = MSG_ReadShort ();
				S_StopSound (i >> 3, i & 7);
				break;

			case svc_updatefrags:
				Sbar_Changed ();
				i = MSG_ReadByte ();
				if (i >= MAX_CLIENTS)
					Host_EndGame
						("CL_ParseServerMessage: svc_updatefrags > MAX_SCOREBOARD");
				cl.players[i].frags = MSG_ReadShort ();
				break;

			case svc_updateping:
				i = MSG_ReadByte ();
				if (i >= MAX_CLIENTS)
					Host_EndGame
						("CL_ParseServerMessage: svc_updateping > MAX_SCOREBOARD");
				cl.players[i].ping = MSG_ReadShort ();
				break;

			case svc_updatepl:
				i = MSG_ReadByte ();
				if (i >= MAX_CLIENTS)
					Host_EndGame
						("CL_ParseServerMessage: svc_updatepl > MAX_SCOREBOARD");
				cl.players[i].pl = MSG_ReadByte ();
				break;

			case svc_updateentertime:
				// time is sent over as seconds ago
				i = MSG_ReadByte ();
				if (i >= MAX_CLIENTS)
					Host_EndGame
						("CL_ParseServerMessage: svc_updateentertime > MAX_SCOREBOARD");
				cl.players[i].entertime = realtime - MSG_ReadFloat ();
				break;

			case svc_spawnbaseline:
				i = MSG_ReadShort ();
				CL_ParseBaseline (&cl_baselines[i]);
				break;
			case svc_spawnstatic:
				CL_ParseStatic ();
				break;
			case svc_temp_entity:
				CL_ParseTEnt ();
				break;

			case svc_killedmonster:
				cl.stats[STAT_MONSTERS]++;
				break;

			case svc_foundsecret:
				cl.stats[STAT_SECRETS]++;
				break;

			case svc_updatestat:
				i = MSG_ReadByte ();
				j = MSG_ReadByte ();
				CL_SetStat (i, j);
				break;
			case svc_updatestatlong:
				i = MSG_ReadByte ();
				j = MSG_ReadLong ();
				CL_SetStat (i, j);
				break;

			case svc_spawnstaticsound:
				CL_ParseStaticSound ();
				break;

			case svc_cdtrack:
				cl.cdtrack = MSG_ReadByte ();
				CDAudio_Play ((byte) cl.cdtrack, true);
				break;

			case svc_intermission:
				Con_DPrintf ("svc_intermission\n");
				cl.intermission = 1;
				cl.completed_time = realtime;
				vid.recalc_refdef = true;	// go to full screen
				Con_DPrintf ("intermission simorg: ");
				for (i = 0; i < 3; i++) {
					cl.simorg[i] = MSG_ReadCoord ();
					Con_DPrintf ("%f ", cl.simorg[i]);
				}
				Con_DPrintf ("\nintermission simangles: ");
				for (i = 0; i < 3; i++) {
					cl.simangles[i] = MSG_ReadAngle ();
					Con_DPrintf ("%f ", cl.simangles[i]);
				}
				Con_DPrintf ("\n");
				VectorCopy (vec3_origin, cl.simvel);
				break;

			case svc_finale:
				cl.intermission = 2;
				cl.completed_time = realtime;
				vid.recalc_refdef = true;	// go to full screen
				SCR_CenterPrint (MSG_ReadString ());
				break;

			case svc_sellscreen:
				Cmd_ExecuteString ("help");
				break;

			case svc_smallkick:
				cl.punchangle = -2;
				break;
			case svc_bigkick:
				cl.punchangle = -4;
				break;

			case svc_muzzleflash:
				CL_MuzzleFlash ();
				break;

			case svc_updateuserinfo:
				CL_UpdateUserinfo ();
				break;

			case svc_setinfo:
				CL_SetInfo ();
				break;

			case svc_serverinfo:
				CL_ServerInfo ();
				break;

			case svc_download:
				CL_ParseDownload ();
				break;

			case svc_playerinfo:
				CL_ParsePlayerinfo ();
				break;

			case svc_nails:
				CL_ParseProjectiles ();
				break;

			case svc_chokecount:		// some preceding packets were choked
				i = MSG_ReadByte ();
				for (j = 0; j < i; j++)
					cl.
						frames[(cls.netchan.incoming_acknowledged - 1 - j) &
							   UPDATE_MASK].receivedtime = -2;
				break;

			case svc_modellist:
				CL_ParseModellist ();
				break;

			case svc_soundlist:
				CL_ParseSoundlist ();
				break;

			case svc_packetentities:
				CL_ParsePacketEntities (false);
				break;

			case svc_deltapacketentities:
				CL_ParsePacketEntities (true);
				break;

			case svc_maxspeed:
				movevars.maxspeed = MSG_ReadFloat ();
				break;

			case svc_entgravity:
				movevars.entgravity = MSG_ReadFloat ();
				break;

			case svc_setpause:
				cl.paused = MSG_ReadByte ();
				if (cl.paused)
					CDAudio_Pause ();
				else
					CDAudio_Resume ();
				break;

		}
	}

	CL_SetSolidEntities ();
}