/*
	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

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

static __attribute__ ((used)) const char rcsid[] = 
	"$Id$";

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

#include "QF/cbuf.h"
#include "QF/cdaudio.h"
#include "QF/cmd.h"
#include "QF/console.h"
#include "QF/cvar.h"
#include "QF/draw.h"
#include "QF/dstring.h"
#include "QF/gib.h"
#include "QF/hash.h"
#include "QF/idparse.h"
#include "QF/msg.h"
#include "QF/quakeio.h"
#include "QF/screen.h"
#include "QF/sound.h"
#include "QF/sys.h"
#include "QF/teamplay.h"
#include "QF/va.h"

#include "qw/bothdefs.h"
#include "cl_cam.h"
#include "cl_chat.h"
#include "cl_ents.h"
#include "cl_http.h"
#include "cl_input.h"
#include "cl_main.h"
#include "cl_parse.h"
#include "cl_skin.h"
#include "cl_tent.h"
#include "client.h"
#include "compat.h"
#include "host.h"
#include "map_cfg.h"
#include "qw/pmove.h"
#include "qw/protocol.h"
#include "sbar.h"
#include "view.h"

const 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 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",
	"svc_nails2",						// FIXME from qwex
	"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         viewentity;

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

int         packet_latency[NET_TIMINGS];

float		r_gravity;

extern cvar_t *hud_scoreboard_uid;

entity_t *cl_static_entities;
static entity_t **cl_static_tail;


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

	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 (const char *filename)
{
	QFile	   *f;

	if (strstr (filename, "..")) {
		Sys_Printf ("Refusing to download a path with ..\n");
		return true;
	}
/*
	if (!snd_initialized && strnequal ("sound/", filename, 6)) {
		// don't bother downloading sounds if we can't play them
		return true;
	}
*/
	QFS_FOpenFile (filename, &f);
	if (f) {							// it exists, no need to download
		Qclose (f);
		return true;
	}
	// ZOID - can't download when recording
	if (cls.demorecording) {
		Sys_Printf ("Unable to download %s in record mode.\n",
					cls.downloadname->str);
		return true;
	}
	// ZOID - can't download when playback
	if (cls.demoplayback)
		return true;

	dstring_copystr (cls.downloadname, filename);
	dstring_copystr (cls.downloadtempname, filename);
	Sys_Printf ("Downloading %s...\n", cls.downloadname->str);

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

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

	cls.downloadnumber++;

	return false;
}

static void
CL_NewMap (const char *mapname)
{
	cl_static_entities = 0;
	cl_static_tail = &cl_static_entities;
	R_NewMap (cl.worldmodel, cl.model_precache, MAX_MODELS);
	Team_NewMap ();
	Con_NewMap ();
	Hunk_Check ();								// make sure nothing is hurt
	Sbar_CenterPrint (0);

	map_cfg (mapname, 1);
}

static void
Model_NextDownload (void)
{
	char	   *s;
	int			i;

	if (cls.downloadnumber == 0) {
		Sys_Printf ("Checking models...\n");
		CL_UpdateScreen (realtime);
		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
	}

	if (cl.model_name[1])
		map_cfg (cl.model_name[1], 0);

	for (i = 1; i < MAX_MODELS; i++) {
		char *info_key = 0;

		if (!cl.model_name[i][0])
			break;

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

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

		if (strequal (cl.model_name[i], "progs/player.mdl")
			&& cl.model_precache[i]->type == mod_alias) {
			info_key = pmodel_name;
			Skin_Player_Model (cl.model_precache[i]);
		}
		if (strequal (cl.model_name[i], "progs/eyes.mdl")
			&& cl.model_precache[i]->type == mod_alias)
			info_key = emodel_name;

		if (info_key && cl_model_crcs->int_val) {
			aliashdr_t *ahdr = Cache_Get (&cl.model_precache[i]->cache);
			Info_SetValueForKey (cls.userinfo, info_key, va ("%d", ahdr->crc),
								 0);
			if (!cls.demoplayback) {
				MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
				SZ_Print (&cls.netchan.message, va ("setinfo %s %d", info_key,
													ahdr->crc));
			}
			Cache_Release (&cl.model_precache[i]->cache);
		}
	}

	// Something went wrong (probably in the server, probably a TF server)
	// We need to disconnect gracefully.
	if (!cl.model_precache[1]) {
		Sys_Printf ("\nThe server has failed to provide the map name.\n\n");
		Sys_Printf ("Disconnecting to prevent a crash.\n\n");
		CL_Disconnect ();
		return;
	}

	// all done
	cl.worldmodel = cl.model_precache[1];
	CL_NewMap (cl.model_name[1]);

	// done with modellist, request first of static signon messages
	if (!cls.demoplayback) {
		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
		MSG_WriteString (&cls.netchan.message,
						 va (prespawn_name, cl.servercount,
							 cl.worldmodel->checksum2));
	}
}

static void
Sound_NextDownload (void)
{
	char	   *s;
	int			i;

	if (cls.downloadnumber == 0) {
		Sys_Printf ("Checking sounds...\n");
		CL_UpdateScreen (realtime);
		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;
	if (!cls.demoplayback) {
		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
		MSG_WriteString (&cls.netchan.message,
						 va (modellist_name, cl.servercount, 0));
	}
}

static 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:
			Sys_MaskPrintf (SYS_DEV, "Unknown download type.\n");
	}
}

void
CL_FinishDownload (void)
{
	Qclose (cls.download);
	VID_SetCaption (va ("Connecting to %s", cls.servername->str));

	// rename the temp file to it's final name
	if (strcmp (cls.downloadtempname->str, cls.downloadname->str)) {
		dstring_t  *oldn = dstring_new ();
		dstring_t  *newn = dstring_new ();

		if (strncmp (cls.downloadtempname->str, "skins/", 6)) {
			dsprintf (oldn, "%s/%s", qfs_gamedir->dir.def,
					  cls.downloadtempname->str);
			dsprintf (newn, "%s/%s", qfs_gamedir->dir.def,
					  cls.downloadname->str);
		} else {
			dsprintf (oldn, "%s/%s", qfs_gamedir->dir.skins,
					  cls.downloadtempname->str + 6);
			dsprintf (newn, "%s/%s", qfs_gamedir->dir.skins,
					  cls.downloadname->str + 6);
		}
		if (QFS_Rename (oldn->str, newn->str))
			Sys_Printf ("failed to rename %s to %s, %s.\n", oldn->str,
						newn->str, strerror (errno));
		dstring_delete (oldn);
		dstring_delete (newn);
	}

	cls.download = NULL;
	dstring_clearstr (cls.downloadname);
	dstring_clearstr (cls.downloadtempname);
	dstring_clearstr (cls.downloadurl);
	cls.downloadpercent = 0;

	// get another file if needed
	CL_RequestNextDownload ();
}

void
CL_FailDownload (void)
{
	if (cls.download) {
		Qclose (cls.download);
		cls.download = NULL;
	}
	dstring_clearstr (cls.downloadname);
	dstring_clearstr (cls.downloadtempname);
	dstring_clearstr (cls.downloadurl);
	CL_RequestNextDownload ();
}

static int
CL_OpenDownload (void)
{
	dstring_t  *name = dstring_newstr ();
	const char *fname, *path;

	if (strncmp (cls.downloadtempname->str, "skins/", 6) == 0) {
		path = qfs_gamedir->dir.skins;
		fname = cls.downloadtempname->str + 6;
	} else if (strncmp (cls.downloadtempname->str, "progs/", 6) == 0) {
		path = qfs_gamedir->dir.models;
		fname = cls.downloadtempname->str + 6;
	} else if (strncmp (cls.downloadtempname->str, "sound/", 6) == 0) {
		path = qfs_gamedir->dir.sound;
		fname = cls.downloadtempname->str + 6;
	} else if (strncmp (cls.downloadtempname->str, "maps/", 5) == 0) {
		path = qfs_gamedir->dir.maps;
		fname = cls.downloadtempname->str + 5;
	} else {
		path = qfs_gamedir->dir.def;
		fname = cls.downloadtempname->str;
	}
	dsprintf (name, "%s/%s", path, fname);

	cls.download = QFS_WOpen (name->str, 0);
	if (!cls.download) {
		dstring_clearstr (cls.downloadname);
		dstring_clearstr (cls.downloadurl);
		Sys_Printf ("Failed to open %s\n", name->str);
		CL_RequestNextDownload ();
		return 0;
	}
	dstring_delete (name);
	return 1;
}

/*
	CL_ParseDownload

	A download message has been received from the server
*/
static void
CL_ParseDownload (void)
{
	int         size, percent;

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

	if (cls.demoplayback) {
		if (size > 0)
			net_message->readcount += size;
		dstring_clearstr (cls.downloadname);
		dstring_clearstr (cls.downloadtempname);
		dstring_clearstr (cls.downloadurl);
		return;							// not in demo playback
	}

	if (size == DL_NOFILE) {
		Sys_Printf ("File not found.\n");
		if (cls.download) {
			Sys_Printf ("cls.download shouldn't have been set\n");
			Qclose (cls.download);
			cls.download = NULL;
		}
		dstring_clearstr (cls.downloadname);
		dstring_clearstr (cls.downloadtempname);
		dstring_clearstr (cls.downloadurl);
		CL_RequestNextDownload ();
		return;
	}

	if (size == DL_RENAME) {
		const char *newname = MSG_ReadString (net_message);

		if (strncmp (newname, cls.downloadname->str,
					 strlen (cls.downloadname->str))
			|| strstr (newname + strlen (cls.downloadname->str), "/")) {
			Sys_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->str);
		}
		dstring_copystr (cls.downloadname, newname);
		Sys_Printf ("downloading to %s\n", cls.downloadname->str);
		return;
	}
	if (size == DL_HTTP) {
#ifdef HAVE_LIBCURL
		const char *url = MSG_ReadString (net_message);
		const char *newname = MSG_ReadString (net_message);

		if (*newname) {
			if (strncmp (newname, cls.downloadname->str,
						 strlen (cls.downloadname->str))
				|| strstr (newname + strlen (cls.downloadname->str), "/")) {
				Sys_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->str);
			}
			dstring_copystr (cls.downloadname, newname);
		}
		dstring_copystr (cls.downloadurl, url);
		Sys_Printf ("downloading %s to %s\n", cls.downloadurl->str,
					cls.downloadname->str);
		CL_HTTP_StartDownload ();
#else
		MSG_ReadString (net_message);
		MSG_ReadString (net_message);
		Sys_Printf ("server sent http redirect but we don't know how to handle"
					"it :(\n");
#endif
		CL_OpenDownload ();
		return;
	}
	// open the file if not opened yet
	if (!cls.download) {
		if (!CL_OpenDownload ()) {
			return;
			net_message->readcount += size;
		}
	}

	Qwrite (cls.download, net_message->message->data + net_message->readcount,
			size);
	net_message->readcount += size;

	if (percent != 100) {
		// request next block
		if (percent != cls.downloadpercent)
			VID_SetCaption (va ("Downloading %s %d%%", cls.downloadname->str,
								percent));
		cls.downloadpercent = percent;

		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
		SZ_Print (&cls.netchan.message, "nextdl");
	} else {
		CL_FinishDownload ();
	}
}

static byte *upload_data;
static int	upload_pos, upload_size;

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

	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);

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

	if (upload_pos != upload_size)
		return;

	Sys_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;							// must be connected

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

	Sys_MaskPrintf (SYS_DEV, "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 =================================================

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

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

static void
CL_ParseServerData (void)
{
	const char *str;
	int			protover;
	qboolean	cflag = false;

	Sys_MaskPrintf (SYS_DEV, "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 (net_message);
	if (protover != PROTOCOL_VERSION
		&& !(cls.demoplayback && (protover <= 26 || protover >= 28)))
		Host_Error ("Server returned version %i, not %i\nYou probably "
					"need to upgrade.\nCheck http://www.quakeworld.net/",
					protover, PROTOCOL_VERSION);

	cl.servercount = MSG_ReadLong (net_message);

	// game directory
	str = MSG_ReadString (net_message);

	if (!strequal (qfs_gamedir->gamedir, str)) {
		// save current config
		Host_WriteConfiguration ();
		cflag = true;
		QFS_Gamedir (str);
	}

	if (cls.demoplayback2) {
		realtime = cls.basetime = MSG_ReadFloat (net_message);
		cl.playernum = 31;
		cl.spectator = true;
	} else {
		// parse player slot, high bit means spectator
		cl.playernum = MSG_ReadByte (net_message);
		if (cl.playernum & 128) {
			cl.spectator = true;
			cl.playernum &= ~128;
		}
	}

// FIXME: evil hack so NQ and QW can share sound code
	cl.viewentity = cl.playernum + 1;
	viewentity = cl.playernum + 1;

	// get the full level name
	str = MSG_ReadString (net_message);
	strncpy (cl.levelname, str, sizeof (cl.levelname) - 1);

	// get the movevars
	movevars.gravity = MSG_ReadFloat (net_message);
	r_gravity = movevars.gravity;		// Gravity for renderer effects
	movevars.stopspeed = MSG_ReadFloat (net_message);
	movevars.maxspeed = MSG_ReadFloat (net_message);
	movevars.spectatormaxspeed = MSG_ReadFloat (net_message);
	movevars.accelerate = MSG_ReadFloat (net_message);
	movevars.airaccelerate = MSG_ReadFloat (net_message);
	movevars.wateraccelerate = MSG_ReadFloat (net_message);
	movevars.friction = MSG_ReadFloat (net_message);
	movevars.waterfriction = MSG_ReadFloat (net_message);
	movevars.entgravity = MSG_ReadFloat (net_message);

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

	// ask for the sound list next
	memset (cl.sound_name, 0, sizeof (cl.sound_name));
	if (!cls.demoplayback) {
		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
		MSG_WriteString (&cls.netchan.message,
						 va (soundlist_name, cl.servercount, 0));
	}

	// now waiting for downloads, etc
	CL_SetState (ca_onserver);

	CL_ClearBaselines ();
}

static void
CL_ParseSoundlist (void)
{
	const char *str;
	int			numsounds, n;

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

	numsounds = MSG_ReadByte (net_message);

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

	n = MSG_ReadByte (net_message);

	if (n && !cls.demoplayback) {
		MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
		MSG_WriteString (&cls.netchan.message,
						 va (soundlist_name, cl.servercount, n));
		return;
	}

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

static void
CL_ParseModellist (void)
{
	int			nummodels, n;
	const char *str;

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

	for (;;) {
		str = MSG_ReadString (net_message);
		if (!str[0])
			break;
		nummodels++;
		if (nummodels == MAX_MODELS)
			Host_Error ("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 & gib filter
		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 (net_message);

	if (n) {
		if (!cls.demoplayback) {
			MSG_WriteByte (&cls.netchan.message, clc_stringcmd);
			MSG_WriteString (&cls.netchan.message,
							 va (modellist_name, cl.servercount, n));
		}
		return;
	}

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

static void
CL_ParseBaseline (entity_state_t *es)
{
	es->modelindex = MSG_ReadByte (net_message);
	es->frame = MSG_ReadByte (net_message);
	es->colormap = MSG_ReadByte (net_message);
	es->skinnum = MSG_ReadByte (net_message);

	MSG_ReadCoordAngleV (net_message, es->origin, es->angles);

	// LordHavoc: set up baseline to for new effects (alpha, colormod, etc)
	es->colormod = 255;
	es->alpha = 255;
	es->scale = 16;
	es->glow_size = 0;
	es->glow_color = 254;
}

/*
	CL_ParseStatic

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

	CL_ParseBaseline (&es);

	ent = R_AllocEntity ();
	CL_Init_Entity (ent);

	*cl_static_tail = ent;
	cl_static_tail = &ent->unext;

	// 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);
}

static void
CL_ParseStaticSound (void)
{
	int			sound_num, vol, atten;
	vec3_t		org;

	MSG_ReadCoordV (net_message, org);
	sound_num = MSG_ReadByte (net_message);
	vol = MSG_ReadByte (net_message);
	atten = MSG_ReadByte (net_message);

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

// ACTION MESSAGES ============================================================

static void
CL_ParseStartSoundPacket (void)
{
	float		attenuation;
	int			channel, ent, sound_num, volume;
	vec3_t		pos;

	channel = MSG_ReadShort (net_message);

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

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

	sound_num = MSG_ReadByte (net_message);

	MSG_ReadCoordV (net_message, pos);

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

	if (ent > MAX_EDICTS)
		Host_Error ("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 only this client, sent every frame
*/
void
CL_ParseClientdata (void)
{
	float		latency;
	frame_t	   *frame;
	int			i;

	// calculate simulated time of message
	oldparsecountmod = parsecountmod;

	i = cls.netchan.incoming_acknowledged;

	cl.parsecount = i;
	i &= UPDATE_MASK;
	parsecountmod = i;
	frame = &cl.frames[i];
	if (cls.demoplayback2)
		frame->senttime = realtime - host_frametime;	//realtime;
	parsecounttime = cl.frames[i].senttime;

	frame->receivedtime = realtime;

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

	if (!(latency < 0 || latency > 1.0)) {
		// drift the average latency towards the observed latency
		if (latency < cls.latency)
			cls.latency = latency;
		else
			cls.latency += 0.001;		// drift up, so correction is needed
	}
}

static void
CL_ProcessUserInfo (int slot, player_info_t *player)
{
	char       skin[MAX_SKIN_LENGTH] = { 0 };
	const char *s;

	s = Info_ValueForKey (player->userinfo, "skin");

	if (strlen(s) < sizeof skin) {
		QFS_StripExtension (s, skin);
		if (!strequal (s, skin))
			Info_SetValueForKey (player->userinfo, "skin", skin, 1);
	} else {
		Info_SetValueForKey (player->userinfo, "skin", skin, 1);
	}

	s = Info_ValueForKey (player->userinfo, "name");
	if (!*s && player->userid)
		Info_SetValueForKey (player->userinfo, "name", va ("user-%i [exploit]", player->userid), 1);
	strncpy (player->name, Info_ValueForKey (player->userinfo, "name"),
			 sizeof (player->name) - 1);
	player->_topcolor = player->_bottomcolor = -1;
	player->topcolor = atoi (Info_ValueForKey (player->userinfo, "topcolor"));
	player->bottomcolor =
		atoi (Info_ValueForKey (player->userinfo, "bottomcolor"));

	while (!(player->team = Hash_Find (player->userinfo->tab, "team")))
			Info_SetValueForKey (player->userinfo, "team", "", 1);
	while (!(player->skinname = Hash_Find (player->userinfo->tab, "skin")))
			Info_SetValueForKey (player->userinfo, "skin", "", 1);

	if (Info_ValueForKey (player->userinfo, "*spectator")[0])
		player->spectator = true;
	else
		player->spectator = false;

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

	Sbar_Changed ();
}

static void
CL_UpdateUserinfo (void)
{
	int				slot, uid;
	const char	   *info;
	player_info_t  *player;

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

	player = &cl.players[slot];
	uid = MSG_ReadLong (net_message);
	info = MSG_ReadString (net_message);
	if (*info) {
		// a totally empty userinfo string should not be possible
		player->userid = uid;
		if (player->userinfo)
			Info_Destroy (player->userinfo);
		player->userinfo = Info_ParseString (info, MAX_INFO_STRING, 0);
		CL_ProcessUserInfo (slot, player);
		CL_Chat_Check_Name (Info_ValueForKey (player->userinfo, "name"), slot);
	} else {
		// the server dropped the client
		CL_Chat_User_Disconnected (player->userid);
		if (player->userinfo)
			Info_Destroy (player->userinfo);
		memset (player, 0, sizeof (*player));
	}
}

static void
CL_SetInfo (void)
{
	char			key[MAX_MSGLEN], value[MAX_MSGLEN];
	int				flags, slot;
	player_info_t  *player;

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

	player = &cl.players[slot];

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

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

	if (!player->userinfo)
		player->userinfo = Info_ParseString ("", MAX_INFO_STRING, 0);

	flags = !strequal (key, "name");
	flags |= strequal (key, "team") << 1;
	Info_SetValueForKey (player->userinfo, key, value, flags);

	CL_ProcessUserInfo (slot, player);
}

static void
CL_ServerInfo (void)
{
	char		key[MAX_MSGLEN], value[MAX_MSGLEN];

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

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

	Info_SetValueForKey (cl.serverinfo, key, value, 0);
	if (strequal (key, "chase")) {
		cl.chase = atoi (value);
	} else if (strequal (key, "cshifts")) {
		cl.sv_cshifts = atoi (value);
	} else if (strequal (key, "no_pogo_stick")) {
		Cvar_Set (no_pogo_stick, value);
		cl.no_pogo_stick = no_pogo_stick->int_val;
	} else if (strequal (key, "teamplay")) {
		cl.teamplay = atoi (value);
		Sbar_DMO_Init_f (hud_scoreboard_uid); // HUD setup, cl.teamplay changed
	} else if (strequal (key, "watervis")) {
		cl.watervis = atoi (value);
	} else if (strequal (key, "fpd")) {
		cl.fpd = atoi (value);
	} else if (strequal (key, "fbskins")) {
		cl.fbskins = atoi (value);
//	} else if (strequal (key, "*z_ext") {
//		cl.z_ext = atoi (value);
//	} else if (strequal (key, "pm_bunnyspeedcap") {
//		cl.bunnyspeedcap = atof (value);
//	} else if (strequal (key, "pm_slidefix") {
//		movevars.slidefix = atoi (value);
//	} else if (strequal (key, "pm_ktjump") {
//		movevars.ktjump = atof (value);
//		FIXME: need to set to 0.5 otherwise, outside of else structure
	}
}

static void
CL_SetStat (int stat, int value)
{
	if (stat < 0 || stat >= MAX_CL_STATS)
		Host_Error ("CL_SetStat: %i is invalid", stat);

	if (cls.demoplayback2) {
		cl.players[cls.lastto].stats[stat] = value;
		if (Cam_TrackNum () != cls.lastto)
			return;
	}

	Sbar_Changed ();

	switch (stat) {
		case STAT_ITEMS:
			Sbar_Changed ();
			break;
		case STAT_HEALTH:
			if (cl_player_health_e->func)
				GIB_Event_Callback (cl_player_health_e, 1, va ("%i", value));
			if (value <= 0)
				Team_Dead ();
			break;
	}
	cl.stats[stat] = value;
}

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

	i = MSG_ReadShort (net_message);

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

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

	dl = R_AllocDlight (i);
	if (!dl)
		return;

	if (i - 1 == cl.playernum)
		AngleVectors (cl.viewangles, fv, rv, uv);
	else
		AngleVectors (pl->viewangles, fv, rv, uv);

	VectorMultAdd (pl->pls.origin, 18, fv, dl->origin);
	dl->radius = 200 + (rand () & 31);
	dl->die = cl.time + 0.1;
	dl->minlight = 32;
	dl->color[0] = 0.2;
	dl->color[1] = 0.1;
	dl->color[2] = 0.05;
	dl->color[3] = 0.7;
}

#define SHOWNET(x) \
	if (cl_shownet->int_val == 2) \
		Sys_Printf ("%3i:%s\n", net_message->readcount-1, x);

int			received_framecount;

void
CL_ParseServerMessage (void)
{
	const char *s;
	static dstring_t *stuffbuf;
	int			cmd = 0, 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)
		Sys_Printf ("%i ", net_message->message->cursize);
	else if (cl_shownet->int_val == 2)
		Sys_Printf ("------------------ %d\n",
					cls.netchan.incoming_acknowledged);

	CL_ParseClientdata ();

	// parse the message
	while (1) {
		if (net_message->badread) {
			Host_Error ("CL_ParseServerMessage: Bad server message: %s\n",
						svc_strings[cmd]);
			break;
		}

		cmd = MSG_ReadByte (net_message);

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

		SHOWNET (svc_strings[cmd]);

		// other commands
		switch (cmd) {
			default:
				Host_Error ("CL_ParseServerMessage: Illegible server "
							"message: %d\n", cmd);
				break;

			case svc_nop:
				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: {
 				char	p[2048];

				i = MSG_ReadByte (net_message);
				s = MSG_ReadString (net_message);
				if (i == PRINT_CHAT) {
					if (!CL_Chat_Allow_Message (s))
						break;
					// TODO: cl_nofake 2 -- accept fake messages from teammates

					if (cl_nofake->int_val) {
						char	*c;

						strncpy (p, s, sizeof (p));
						p[sizeof (p) - 1] = 0;
						for (c = p; *c; c++) {
							if (*c == '\r')
								*c = '#';
						}
						s = p;
					}
					Con_SetOrMask (128);
					S_LocalSound ("misc/talk.wav");
					if (cl_chat_e->func)
						GIB_Event_Callback (cl_chat_e, 1, s);
					Team_ParseChat (s);
				}
				Sys_Printf ("%s", s);
				Con_SetOrMask (0);
				break;
			}
			case svc_centerprint:
				Sbar_CenterPrint (MSG_ReadString (net_message));
				break;

			case svc_stufftext:
				s = MSG_ReadString (net_message);
				if (s[strlen (s) - 1] == '\n') {
					if (stuffbuf && stuffbuf->str[0]) {
						Sys_MaskPrintf (SYS_DEV, "stufftext: %s%s\n",
										stuffbuf->str, s);
						Cbuf_AddText (cl_stbuf, stuffbuf->str);
						dstring_clearstr (stuffbuf);
					} else {
						Sys_MaskPrintf (SYS_DEV, "stufftext: %s\n", s);
					}
					Cbuf_AddText (cl_stbuf, s);
				} else {
					Sys_MaskPrintf (SYS_DEV, "partial stufftext: %s\n", s);
					if (!stuffbuf)
						stuffbuf = dstring_newstr ();
					dstring_appendstr (stuffbuf, s);
				}
				break;

			case svc_damage:
				V_ParseDamage ();
				break;

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

			case svc_setangle:
				if (!cls.demoplayback2) {
					MSG_ReadAngleV (net_message, cl.viewangles);
				} else {
					j = MSG_ReadByte (net_message);
//					fixangle |= 1 << j;
					if (j != Cam_TrackNum ()) {
						MSG_ReadAngle (net_message);
						MSG_ReadAngle (net_message);
						MSG_ReadAngle (net_message);
					} else {
						MSG_ReadAngleV (net_message, cl.viewangles);
					}
				}
// FIXME		cl.viewangles[PITCH] = cl.viewangles[ROLL] = 0;
				break;

			case svc_lightstyle:
				i = MSG_ReadByte (net_message);
				if (i >= MAX_LIGHTSTYLES)
					Host_Error ("svc_lightstyle > MAX_LIGHTSTYLES");
				strcpy (r_lightstyle[i].map, MSG_ReadString (net_message));
				r_lightstyle[i].length = strlen (r_lightstyle[i].map);
				break;

			case svc_sound:
				CL_ParseStartSoundPacket ();
				break;

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

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

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

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

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

			case svc_spawnbaseline:
				i = MSG_ReadShort (net_message);
				CL_ParseBaseline (&cl_baselines[i]);
				break;

			case svc_spawnstatic:
				CL_ParseStatic ();
				break;

			case svc_spawnstaticsound:
				CL_ParseStaticSound ();
				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 (net_message);
				j = MSG_ReadByte (net_message);
				CL_SetStat (i, j);
				break;

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

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

			case svc_intermission:
				Sys_MaskPrintf (SYS_DEV, "svc_intermission\n");

				cl.intermission = 1;
				r_force_fullscreen = 1;
				cl.completed_time = realtime;
				vid.recalc_refdef = true;	// go to full screen
				Sys_MaskPrintf (SYS_DEV, "intermission simorg: ");
				MSG_ReadCoordV (net_message, cl.simorg);
				for (i = 0; i < 3; i++)
					Sys_MaskPrintf (SYS_DEV, "%f ", cl.simorg[i]);
				Sys_MaskPrintf (SYS_DEV, "\nintermission simangles: ");
				MSG_ReadAngleV (net_message, cl.simangles);
				for (i = 0; i < 3; i++)
					Sys_MaskPrintf (SYS_DEV, "%f ", cl.simangles[i]);
				Sys_MaskPrintf (SYS_DEV, "\n");
				VectorZero (cl.simvel);

				// automatic fraglogging (by elmex)
				// XXX: Should this _really_ called here?
				if (!cls.demoplayback)
					Sbar_LogFrags ();
				break;

			case svc_finale:
				cl.intermission = 2;
				r_force_fullscreen = 1;
				cl.completed_time = realtime;
				vid.recalc_refdef = true;				// go to full screen
				Sbar_CenterPrint (MSG_ReadString (net_message));
				break;

			case svc_sellscreen:
				Cmd_ExecuteString ("help", src_command);
				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 (false);
				break;

			case svc_nails2:			// FIXME from qwex
				CL_ParseProjectiles (true);
				break;

			case svc_chokecount:		// some preceding packets were choked
				i = MSG_ReadByte (net_message);
				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 (net_message);
				break;

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

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

	CL_SetSolidEntities ();
}