/cl_parse.c

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

*/
// cl_parse.c  -- parse a message received from the server

#include "quakedef.h"
#ifdef CONFIG_CD
#include "cdaudio.h"
#endif
#include "cl_collision.h"
#include "csprogs.h"
#include "libcurl.h"
#include "utf8lib.h"
#ifdef CONFIG_MENU
#include "menu.h"
#endif
#include "cl_video.h"

const char *svc_strings[128] =
{
	"svc_bad",
	"svc_nop",
	"svc_disconnect",
	"svc_updatestat",
	"svc_version",		// [int] 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_serverinfo",		// [int] version
						// [string] signon string
						// [string]..[0]model cache [string]...[0]sounds cache
						// [string]..[0]item cache
	"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",			// [string] music [string] text
	"svc_cdtrack",			// [byte] track [byte] looptrack
	"svc_sellscreen",
	"svc_cutscene",
	"svc_showlmp",	// [string] iconlabel [string] lmpfile [short] x [short] y
	"svc_hidelmp",	// [string] iconlabel
	"svc_skybox", // [string] skyname
	"", // 38
	"", // 39
	"", // 40
	"", // 41
	"", // 42
	"", // 43
	"", // 44
	"", // 45
	"", // 46
	"", // 47
	"", // 48
	"", // 49
	"svc_downloaddata", //				50		// [int] start [short] size [variable length] data
	"svc_updatestatubyte", //			51		// [byte] stat [byte] value
	"svc_effect", //			52		// [vector] org [byte] modelindex [byte] startframe [byte] framecount [byte] framerate
	"svc_effect2", //			53		// [vector] org [short] modelindex [short] startframe [byte] framecount [byte] framerate
	"svc_sound2", //			54		// short soundindex instead of byte
	"svc_spawnbaseline2", //	55		// short modelindex instead of byte
	"svc_spawnstatic2", //		56		// short modelindex instead of byte
	"svc_entities", //			57		// [int] deltaframe [int] thisframe [float vector] eye [variable length] entitydata
	"svc_csqcentities", //		58		// [short] entnum [variable length] entitydata ... [short] 0x0000
	"svc_spawnstaticsound2", //	59		// [coord3] [short] samp [byte] vol [byte] aten
	"svc_trailparticles", //	60		// [short] entnum [short] effectnum [vector] start [vector] end
	"svc_pointparticles", //	61		// [short] effectnum [vector] start [vector] velocity [short] count
	"svc_pointparticles1", //	62		// [short] effectnum [vector] start, same as svc_pointparticles except velocity is zero and count is 1
};

const char *qw_svc_strings[128] =
{
	"qw_svc_bad",					// 0
	"qw_svc_nop",					// 1
	"qw_svc_disconnect",			// 2
	"qw_svc_updatestat",			// 3	// [byte] [byte]
	"",								// 4
	"qw_svc_setview",				// 5	// [short] entity number
	"qw_svc_sound",					// 6	// <see code>
	"",								// 7
	"qw_svc_print",					// 8	// [byte] id [string] null terminated string
	"qw_svc_stufftext",				// 9	// [string] stuffed into client's console buffer
	"qw_svc_setangle",				// 10	// [angle3] set the view angle to this absolute value
	"qw_svc_serverdata",			// 11	// [long] protocol ...
	"qw_svc_lightstyle",			// 12	// [byte] [string]
	"",								// 13
	"qw_svc_updatefrags",			// 14	// [byte] [short]
	"",								// 15
	"qw_svc_stopsound",				// 16	// <see code>
	"",								// 17
	"",								// 18
	"qw_svc_damage",				// 19
	"qw_svc_spawnstatic",			// 20
	"",								// 21
	"qw_svc_spawnbaseline",			// 22
	"qw_svc_temp_entity",			// 23	// variable
	"qw_svc_setpause",				// 24	// [byte] on / off
	"",								// 25
	"qw_svc_centerprint",			// 26	// [string] to put in center of the screen
	"qw_svc_killedmonster",			// 27
	"qw_svc_foundsecret",			// 28
	"qw_svc_spawnstaticsound",		// 29	// [coord3] [byte] samp [byte] vol [byte] aten
	"qw_svc_intermission",			// 30		// [vec3_t] origin [vec3_t] angle
	"qw_svc_finale",				// 31		// [string] text
	"qw_svc_cdtrack",				// 32		// [byte] track
	"qw_svc_sellscreen",			// 33
	"qw_svc_smallkick",				// 34		// set client punchangle to 2
	"qw_svc_bigkick",				// 35		// set client punchangle to 4
	"qw_svc_updateping",			// 36		// [byte] [short]
	"qw_svc_updateentertime",		// 37		// [byte] [float]
	"qw_svc_updatestatlong",		// 38		// [byte] [long]
	"qw_svc_muzzleflash",			// 39		// [short] entity
	"qw_svc_updateuserinfo",		// 40		// [byte] slot [long] uid
	"qw_svc_download",				// 41		// [short] size [size bytes]
	"qw_svc_playerinfo",			// 42		// variable
	"qw_svc_nails",					// 43		// [byte] num [48 bits] xyzpy 12 12 12 4 8
	"qw_svc_chokecount",			// 44		// [byte] packets choked
	"qw_svc_modellist",				// 45		// [strings]
	"qw_svc_soundlist",				// 46		// [strings]
	"qw_svc_packetentities",		// 47		// [...]
	"qw_svc_deltapacketentities",	// 48		// [...]
	"qw_svc_maxspeed",				// 49		// maxspeed change, for prediction
	"qw_svc_entgravity",			// 50		// gravity change, for prediction
	"qw_svc_setinfo",				// 51		// setinfo on a client
	"qw_svc_serverinfo",			// 52		// serverinfo
	"qw_svc_updatepl",				// 53		// [byte] [byte]
};

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

cvar_t cl_worldmessage = {CVAR_READONLY, "cl_worldmessage", "", "title of current level"};
cvar_t cl_worldname = {CVAR_READONLY, "cl_worldname", "", "name of current worldmodel"};
cvar_t cl_worldnamenoextension = {CVAR_READONLY, "cl_worldnamenoextension", "", "name of current worldmodel without extension"};
cvar_t cl_worldbasename = {CVAR_READONLY, "cl_worldbasename", "", "name of current worldmodel without maps/ prefix or extension"};

cvar_t developer_networkentities = {0, "developer_networkentities", "0", "prints received entities, value is 0-10 (higher for more info, 10 being the most verbose)"};
cvar_t cl_gameplayfix_soundsmovewithentities = {0, "cl_gameplayfix_soundsmovewithentities", "1", "causes sounds made by lifts, players, projectiles, and any other entities, to move with the entity, so for example a rocket noise follows the rocket rather than staying at the starting position"};
cvar_t cl_sound_wizardhit = {0, "cl_sound_wizardhit", "wizard/hit.wav", "sound to play during TE_WIZSPIKE (empty cvar disables sound)"};
cvar_t cl_sound_hknighthit = {0, "cl_sound_hknighthit", "hknight/hit.wav", "sound to play during TE_KNIGHTSPIKE (empty cvar disables sound)"};
cvar_t cl_sound_tink1 = {0, "cl_sound_tink1", "weapons/tink1.wav", "sound to play with 80% chance during TE_SPIKE/TE_SUPERSPIKE (empty cvar disables sound)"};
cvar_t cl_sound_ric1 = {0, "cl_sound_ric1", "weapons/ric1.wav", "sound to play with 5% chance during TE_SPIKE/TE_SUPERSPIKE (empty cvar disables sound)"};
cvar_t cl_sound_ric2 = {0, "cl_sound_ric2", "weapons/ric2.wav", "sound to play with 5% chance during TE_SPIKE/TE_SUPERSPIKE (empty cvar disables sound)"};
cvar_t cl_sound_ric3 = {0, "cl_sound_ric3", "weapons/ric3.wav", "sound to play with 10% chance during TE_SPIKE/TE_SUPERSPIKE (empty cvar disables sound)"};
cvar_t cl_readpicture_force = {0, "cl_readpicture_force", "0", "when enabled, the low quality pictures read by ReadPicture() are preferred over the high quality pictures on the file system"};

#define RIC_GUNSHOT		1
#define RIC_GUNSHOTQUAD	2
cvar_t cl_sound_ric_gunshot = {0, "cl_sound_ric_gunshot", "0", "specifies if and when the related cl_sound_ric and cl_sound_tink sounds apply to TE_GUNSHOT/TE_GUNSHOTQUAD, 0 = no sound, 1 = TE_GUNSHOT, 2 = TE_GUNSHOTQUAD, 3 = TE_GUNSHOT and TE_GUNSHOTQUAD"};
cvar_t cl_sound_r_exp3 = {0, "cl_sound_r_exp3", "weapons/r_exp3.wav", "sound to play during TE_EXPLOSION and related effects (empty cvar disables sound)"};
cvar_t cl_serverextension_download = {0, "cl_serverextension_download", "0", "indicates whether the server supports the download command"};
cvar_t cl_joinbeforedownloadsfinish = {CVAR_SAVE, "cl_joinbeforedownloadsfinish", "1", "if non-zero the game will begin after the map is loaded before other downloads finish"};
cvar_t cl_nettimesyncfactor = {CVAR_SAVE, "cl_nettimesyncfactor", "0", "rate at which client time adapts to match server time, 1 = instantly, 0.125 = slowly, 0 = not at all (bounding still applies)"};
cvar_t cl_nettimesyncboundmode = {CVAR_SAVE, "cl_nettimesyncboundmode", "6", "method of restricting client time to valid values, 0 = no correction, 1 = tight bounding (jerky with packet loss), 2 = loose bounding (corrects it if out of bounds), 3 = leniant bounding (ignores temporary errors due to varying framerate), 4 = slow adjustment method from Quake3, 5 = slighttly nicer version of Quake3 method, 6 = bounding + Quake3"};
cvar_t cl_nettimesyncboundtolerance = {CVAR_SAVE, "cl_nettimesyncboundtolerance", "0.25", "how much error is tolerated by bounding check, as a fraction of frametime, 0.25 = up to 25% margin of error tolerated, 1 = use only new time, 0 = use only old time (same effect as setting cl_nettimesyncfactor to 1)"};
cvar_t cl_iplog_name = {CVAR_SAVE, "cl_iplog_name", "darkplaces_iplog.txt", "name of iplog file containing player addresses for iplog_list command and automatic ip logging when parsing status command"};

static qboolean QW_CL_CheckOrDownloadFile(const char *filename);
static void QW_CL_RequestNextDownload(void);
static void QW_CL_NextUpload(void);
//static qboolean QW_CL_IsUploading(void);
static void QW_CL_StopUpload(void);

/*
==================
CL_ParseStartSoundPacket
==================
*/
static void CL_ParseStartSoundPacket(int largesoundindex)
{
	vec3_t  pos;
	int 	channel, ent;
	int 	sound_num;
	int 	nvolume;
	int 	field_mask;
	float 	attenuation;
	float	speed;
	int		fflags = CHANNELFLAG_NONE;

	if (cls.protocol == PROTOCOL_QUAKEWORLD)
	{
		channel = MSG_ReadShort(&cl_message);

		if (channel & (1<<15))
			nvolume = MSG_ReadByte(&cl_message);
		else
			nvolume = DEFAULT_SOUND_PACKET_VOLUME;

		if (channel & (1<<14))
			attenuation = MSG_ReadByte(&cl_message) / 64.0;
		else
			attenuation = DEFAULT_SOUND_PACKET_ATTENUATION;

		speed = 1.0f;

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

		sound_num = MSG_ReadByte(&cl_message);
	}
	else
	{
		field_mask = MSG_ReadByte(&cl_message);

		if (field_mask & SND_VOLUME)
			nvolume = MSG_ReadByte(&cl_message);
		else
			nvolume = DEFAULT_SOUND_PACKET_VOLUME;

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

		if (field_mask & SND_SPEEDUSHORT4000)
			speed = ((unsigned short)MSG_ReadShort(&cl_message)) / 4000.0f;
		else
			speed = 1.0f;

		if (field_mask & SND_LARGEENTITY)
		{
			ent = (unsigned short) MSG_ReadShort(&cl_message);
			channel = MSG_ReadChar(&cl_message);
		}
		else
		{
			channel = (unsigned short) MSG_ReadShort(&cl_message);
			ent = channel >> 3;
			channel &= 7;
		}

		if (largesoundindex || (field_mask & SND_LARGESOUND) || cls.protocol == PROTOCOL_NEHAHRABJP2 || cls.protocol == PROTOCOL_NEHAHRABJP3)
			sound_num = (unsigned short) MSG_ReadShort(&cl_message);
		else
			sound_num = MSG_ReadByte(&cl_message);
	}

	channel = CHAN_NET2ENGINE(channel);

	MSG_ReadVector(&cl_message, pos, cls.protocol);

	if (sound_num < 0 || sound_num >= MAX_SOUNDS)
	{
		Con_Printf("CL_ParseStartSoundPacket: sound_num (%i) >= MAX_SOUNDS (%i)\n", sound_num, MAX_SOUNDS);
		return;
	}

	if (ent >= MAX_EDICTS)
	{
		Con_Printf("CL_ParseStartSoundPacket: ent = %i", ent);
		return;
	}

	if (ent >= cl.max_entities)
		CL_ExpandEntities(ent);

	if( !CL_VM_Event_Sound(sound_num, nvolume / 255.0f, channel, attenuation, ent, pos, fflags, speed) )
		S_StartSound_StartPosition_Flags (ent, channel, cl.sound_precache[sound_num], pos, nvolume/255.0f, attenuation, 0, fflags, speed);
}

/*
==================
CL_KeepaliveMessage

When the client is taking a long time to load stuff, send keepalive messages
so the server doesn't disconnect.
==================
*/

static unsigned char olddata[NET_MAXMESSAGE];
void CL_KeepaliveMessage (qboolean readmessages)
{
	static double lastdirtytime = 0;
	static qboolean recursive = false;
	double dirtytime;
	double deltatime;
	static double countdownmsg = 0;
	static double countdownupdate = 0;
	sizebuf_t old;

	qboolean thisrecursive;

	thisrecursive = recursive;
	recursive = true;

	dirtytime = Sys_DirtyTime();
	deltatime = dirtytime - lastdirtytime;
	lastdirtytime = dirtytime;
	if (deltatime <= 0 || deltatime >= 1800.0)
		return;

	countdownmsg -= deltatime;
	countdownupdate -= deltatime;

	if(!thisrecursive)
	{
		if(cls.state != ca_dedicated)
		{
			if(countdownupdate <= 0) // check if time stepped backwards
			{
				SCR_UpdateLoadingScreenIfShown();
				countdownupdate = 2;
			}
		}
	}

	// no need if server is local and definitely not if this is a demo
	if (sv.active || !cls.netcon || cls.protocol == PROTOCOL_QUAKEWORLD || cls.signon >= SIGNONS)
	{
		recursive = thisrecursive;
		return;
	}

	if (readmessages)
	{
		// read messages from server, should just be nops
		old = cl_message;
		memcpy(olddata, cl_message.data, cl_message.cursize);

		NetConn_ClientFrame();

		cl_message = old;
		memcpy(cl_message.data, olddata, cl_message.cursize);
	}

	if (cls.netcon && countdownmsg <= 0) // check if time stepped backwards
	{
		sizebuf_t	msg;
		unsigned char		buf[4];
		countdownmsg = 5;
		// write out a nop
		// LordHavoc: must use unreliable because reliable could kill the sigon message!
		Con_Print("--> client to server keepalive\n");
		memset(&msg, 0, sizeof(msg));
		msg.data = buf;
		msg.maxsize = sizeof(buf);
		MSG_WriteChar(&msg, clc_nop);
		NetConn_SendUnreliableMessage(cls.netcon, &msg, cls.protocol, 10000, 0, false);
	}

	recursive = thisrecursive;
}

void CL_ParseEntityLump(char *entdata)
{
	qboolean loadedsky = false;
	const char *data;
	char key[128], value[MAX_INPUTLINE];
	FOG_clear(); // LordHavoc: no fog until set
	// LordHavoc: default to the map's sky (q3 shader parsing sets this)
	R_SetSkyBox(cl.worldmodel->brush.skybox);
	data = entdata;
	if (!data)
		return;
	if (!COM_ParseToken_Simple(&data, false, false, true))
		return; // error
	if (com_token[0] != '{')
		return; // error
	while (1)
	{
		if (!COM_ParseToken_Simple(&data, false, false, true))
			return; // error
		if (com_token[0] == '}')
			break; // end of worldspawn
		if (com_token[0] == '_')
			strlcpy (key, com_token + 1, sizeof (key));
		else
			strlcpy (key, com_token, sizeof (key));
		while (key[strlen(key)-1] == ' ') // remove trailing spaces
			key[strlen(key)-1] = 0;
		if (!COM_ParseToken_Simple(&data, false, false, true))
			return; // error
		strlcpy (value, com_token, sizeof (value));
		if (!strcmp("sky", key))
		{
			loadedsky = true;
			R_SetSkyBox(value);
		}
		else if (!strcmp("skyname", key)) // non-standard, introduced by QuakeForge... sigh.
		{
			loadedsky = true;
			R_SetSkyBox(value);
		}
		else if (!strcmp("qlsky", key)) // non-standard, introduced by QuakeLives (EEK)
		{
			loadedsky = true;
			R_SetSkyBox(value);
		}
		else if (!strcmp("fog", key))
		{
			FOG_clear(); // so missing values get good defaults
			r_refdef.fog_start = 0;
			r_refdef.fog_alpha = 1;
			r_refdef.fog_end = 16384;
			r_refdef.fog_height = 1<<30;
			r_refdef.fog_fadedepth = 128;
#if _MSC_VER >= 1400
#define sscanf sscanf_s
#endif
			sscanf(value, "%f %f %f %f %f %f %f %f %f", &r_refdef.fog_density, &r_refdef.fog_red, &r_refdef.fog_green, &r_refdef.fog_blue, &r_refdef.fog_alpha, &r_refdef.fog_start, &r_refdef.fog_end, &r_refdef.fog_height, &r_refdef.fog_fadedepth);
		}
		else if (!strcmp("fog_density", key))
			r_refdef.fog_density = atof(value);
		else if (!strcmp("fog_red", key))
			r_refdef.fog_red = atof(value);
		else if (!strcmp("fog_green", key))
			r_refdef.fog_green = atof(value);
		else if (!strcmp("fog_blue", key))
			r_refdef.fog_blue = atof(value);
		else if (!strcmp("fog_alpha", key))
			r_refdef.fog_alpha = atof(value);
		else if (!strcmp("fog_start", key))
			r_refdef.fog_start = atof(value);
		else if (!strcmp("fog_end", key))
			r_refdef.fog_end = atof(value);
		else if (!strcmp("fog_height", key))
			r_refdef.fog_height = atof(value);
		else if (!strcmp("fog_fadedepth", key))
			r_refdef.fog_fadedepth = atof(value);
		else if (!strcmp("fog_heighttexture", key))
		{
			FOG_clear(); // so missing values get good defaults
#if _MSC_VER >= 1400
			sscanf_s(value, "%f %f %f %f %f %f %f %f %f %s", &r_refdef.fog_density, &r_refdef.fog_red, &r_refdef.fog_green, &r_refdef.fog_blue, &r_refdef.fog_alpha, &r_refdef.fog_start, &r_refdef.fog_end, &r_refdef.fog_height, &r_refdef.fog_fadedepth, r_refdef.fog_height_texturename, (unsigned int)sizeof(r_refdef.fog_height_texturename));
#else
			sscanf(value, "%f %f %f %f %f %f %f %f %f %63s", &r_refdef.fog_density, &r_refdef.fog_red, &r_refdef.fog_green, &r_refdef.fog_blue, &r_refdef.fog_alpha, &r_refdef.fog_start, &r_refdef.fog_end, &r_refdef.fog_height, &r_refdef.fog_fadedepth, r_refdef.fog_height_texturename);
#endif
			r_refdef.fog_height_texturename[63] = 0;
		}
	}

	if (!loadedsky && cl.worldmodel->brush.isq2bsp)
		R_SetSkyBox("unit1_");
}

static const vec3_t defaultmins = {-4096, -4096, -4096};
static const vec3_t defaultmaxs = {4096, 4096, 4096};
static void CL_SetupWorldModel(void)
{
	prvm_prog_t *prog = CLVM_prog;
	// update the world model
	cl.entities[0].render.model = cl.worldmodel = CL_GetModelByIndex(1);
	CL_UpdateRenderEntity(&cl.entities[0].render);

	// make sure the cl.worldname and related cvars are set up now that we know the world model name
	// set up csqc world for collision culling
	if (cl.worldmodel)
	{
		strlcpy(cl.worldname, cl.worldmodel->name, sizeof(cl.worldname));
		FS_StripExtension(cl.worldname, cl.worldnamenoextension, sizeof(cl.worldnamenoextension));
		strlcpy(cl.worldbasename, !strncmp(cl.worldnamenoextension, "maps/", 5) ? cl.worldnamenoextension + 5 : cl.worldnamenoextension, sizeof(cl.worldbasename));
		Cvar_SetQuick(&cl_worldmessage, cl.worldmessage);
		Cvar_SetQuick(&cl_worldname, cl.worldname);
		Cvar_SetQuick(&cl_worldnamenoextension, cl.worldnamenoextension);
		Cvar_SetQuick(&cl_worldbasename, cl.worldbasename);
		World_SetSize(&cl.world, cl.worldname, cl.worldmodel->normalmins, cl.worldmodel->normalmaxs, prog);
	}
	else
	{
		Cvar_SetQuick(&cl_worldmessage, cl.worldmessage);
		Cvar_SetQuick(&cl_worldnamenoextension, "");
		Cvar_SetQuick(&cl_worldbasename, "");
		World_SetSize(&cl.world, "", defaultmins, defaultmaxs, prog);
	}
	World_Start(&cl.world);

	// load or reload .loc file for team chat messages
	CL_Locs_Reload_f();

	// make sure we send enough keepalives
	CL_KeepaliveMessage(false);

	// reset particles and other per-level things
	R_Modules_NewMap();

	// make sure we send enough keepalives
	CL_KeepaliveMessage(false);

	// load the team chat beep if possible
	cl.foundtalk2wav = FS_FileExists("sound/misc/talk2.wav");

	// check memory integrity
	Mem_CheckSentinelsGlobal();

#ifdef CONFIG_MENU
	// make menu know
	MR_NewMap();
#endif

	// load the csqc now
	if (cl.loadcsqc)
	{
		cl.loadcsqc = false;

		CL_VM_Init();
	}
}

static qboolean QW_CL_CheckOrDownloadFile(const char *filename)
{
	qfile_t *file;
	char vabuf[1024];

	// see if the file already exists
	file = FS_OpenVirtualFile(filename, true);
	if (file)
	{
		FS_Close(file);
		return true;
	}

	// download messages in a demo would be bad
	if (cls.demorecording)
	{
		Con_Printf("Unable to download \"%s\" when recording.\n", filename);
		return true;
	}

	// don't try to download when playing a demo
	if (!cls.netcon)
		return true;

	strlcpy(cls.qw_downloadname, filename, sizeof(cls.qw_downloadname));
	Con_Printf("Downloading %s\n", filename);

	if (!cls.qw_downloadmemory)
	{
		cls.qw_downloadmemory = NULL;
		cls.qw_downloadmemorycursize = 0;
		cls.qw_downloadmemorymaxsize = 1024*1024; // start out with a 1MB buffer
	}

	MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
	MSG_WriteString(&cls.netcon->message, va(vabuf, sizeof(vabuf), "download %s", filename));

	cls.qw_downloadnumber++;
	cls.qw_downloadpercent = 0;
	cls.qw_downloadmemorycursize = 0;

	return false;
}

static void QW_CL_ProcessUserInfo(int slot);
static void QW_CL_RequestNextDownload(void)
{
	int i;
	char vabuf[1024];

	// clear name of file that just finished
	cls.qw_downloadname[0] = 0;

	// skip the download fragment if playing a demo
	if (!cls.netcon)
	{
		return;
	}

	switch (cls.qw_downloadtype)
	{
	case dl_single:
		break;
	case dl_skin:
		if (cls.qw_downloadnumber == 0)
			Con_Printf("Checking skins...\n");
		for (;cls.qw_downloadnumber < cl.maxclients;cls.qw_downloadnumber++)
		{
			if (!cl.scores[cls.qw_downloadnumber].name[0])
				continue;
			// check if we need to download the file, and return if so
			if (!QW_CL_CheckOrDownloadFile(va(vabuf, sizeof(vabuf), "skins/%s.pcx", cl.scores[cls.qw_downloadnumber].qw_skin)))
				return;
		}

		cls.qw_downloadtype = dl_none;

		// load any newly downloaded skins
		for (i = 0;i < cl.maxclients;i++)
			QW_CL_ProcessUserInfo(i);

		// if we're still in signon stages, request the next one
		if (cls.signon != SIGNONS)
		{
			cls.signon = SIGNONS-1;
			// we'll go to SIGNONS when the first entity update is received
			MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
			MSG_WriteString(&cls.netcon->message, va(vabuf, sizeof(vabuf), "begin %i", cl.qw_servercount));
		}
		break;
	case dl_model:
		if (cls.qw_downloadnumber == 0)
		{
			Con_Printf("Checking models...\n");
			cls.qw_downloadnumber = 1;
		}

		for (;cls.qw_downloadnumber < MAX_MODELS && cl.model_name[cls.qw_downloadnumber][0];cls.qw_downloadnumber++)
		{
			// skip submodels
			if (cl.model_name[cls.qw_downloadnumber][0] == '*')
				continue;
			if (!strcmp(cl.model_name[cls.qw_downloadnumber], "progs/spike.mdl"))
				cl.qw_modelindex_spike = cls.qw_downloadnumber;
			if (!strcmp(cl.model_name[cls.qw_downloadnumber], "progs/player.mdl"))
				cl.qw_modelindex_player = cls.qw_downloadnumber;
			if (!strcmp(cl.model_name[cls.qw_downloadnumber], "progs/flag.mdl"))
				cl.qw_modelindex_flag = cls.qw_downloadnumber;
			if (!strcmp(cl.model_name[cls.qw_downloadnumber], "progs/s_explod.spr"))
				cl.qw_modelindex_s_explod = cls.qw_downloadnumber;
			// check if we need to download the file, and return if so
			if (!QW_CL_CheckOrDownloadFile(cl.model_name[cls.qw_downloadnumber]))
				return;
		}

		cls.qw_downloadtype = dl_none;

		// touch all of the precached models that are still loaded so we can free
		// anything that isn't needed
		if (!sv.active)
			Mod_ClearUsed();
		for (i = 1;i < MAX_MODELS && cl.model_name[i][0];i++)
			Mod_FindName(cl.model_name[i], cl.model_name[i][0] == '*' ? cl.model_name[1] : NULL);
		// precache any models used by the client (this also marks them used)
		cl.model_bolt = Mod_ForName("progs/bolt.mdl", false, false, NULL);
		cl.model_bolt2 = Mod_ForName("progs/bolt2.mdl", false, false, NULL);
		cl.model_bolt3 = Mod_ForName("progs/bolt3.mdl", false, false, NULL);
		cl.model_beam = Mod_ForName("progs/beam.mdl", false, false, NULL);

		// we purge the models and sounds later in CL_SignonReply
		//Mod_PurgeUnused();

		// now we try to load everything that is new

		// world model
		cl.model_precache[1] = Mod_ForName(cl.model_name[1], false, false, NULL);
		if (cl.model_precache[1]->Draw == NULL)
			Con_Printf("Map %s could not be found or downloaded\n", cl.model_name[1]);

		// normal models
		for (i = 2;i < MAX_MODELS && cl.model_name[i][0];i++)
			if ((cl.model_precache[i] = Mod_ForName(cl.model_name[i], false, false, cl.model_name[i][0] == '*' ? cl.model_name[1] : NULL))->Draw == NULL)
				Con_Printf("Model %s could not be found or downloaded\n", cl.model_name[i]);

		// check memory integrity
		Mem_CheckSentinelsGlobal();

		// now that we have a world model, set up the world entity, renderer
		// modules and csqc
		CL_SetupWorldModel();

		// add pmodel/emodel CRCs to userinfo
		CL_SetInfo("pmodel", va(vabuf, sizeof(vabuf), "%i", FS_CRCFile("progs/player.mdl", NULL)), true, true, true, true);
		CL_SetInfo("emodel", va(vabuf, sizeof(vabuf), "%i", FS_CRCFile("progs/eyes.mdl", NULL)), true, true, true, true);

		// done checking sounds and models, send a prespawn command now
		MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
		MSG_WriteString(&cls.netcon->message, va(vabuf, sizeof(vabuf), "prespawn %i 0 %i", cl.qw_servercount, cl.model_precache[1]->brush.qw_md4sum2));

		if (cls.qw_downloadmemory)
		{
			Mem_Free(cls.qw_downloadmemory);
			cls.qw_downloadmemory = NULL;
		}

		// done loading
		cl.loadfinished = true;
		break;
	case dl_sound:
		if (cls.qw_downloadnumber == 0)
		{
			Con_Printf("Checking sounds...\n");
			cls.qw_downloadnumber = 1;
		}

		for (;cl.sound_name[cls.qw_downloadnumber][0];cls.qw_downloadnumber++)
		{
			// check if we need to download the file, and return if so
			if (!QW_CL_CheckOrDownloadFile(va(vabuf, sizeof(vabuf), "sound/%s", cl.sound_name[cls.qw_downloadnumber])))
				return;
		}

		cls.qw_downloadtype = dl_none;

		// clear sound usage flags for purging of unused sounds
		S_ClearUsed();

		// precache any sounds used by the client
		cl.sfx_wizhit = S_PrecacheSound(cl_sound_wizardhit.string, false, true);
		cl.sfx_knighthit = S_PrecacheSound(cl_sound_hknighthit.string, false, true);
		cl.sfx_tink1 = S_PrecacheSound(cl_sound_tink1.string, false, true);
		cl.sfx_ric1 = S_PrecacheSound(cl_sound_ric1.string, false, true);
		cl.sfx_ric2 = S_PrecacheSound(cl_sound_ric2.string, false, true);
		cl.sfx_ric3 = S_PrecacheSound(cl_sound_ric3.string, false, true);
		cl.sfx_r_exp3 = S_PrecacheSound(cl_sound_r_exp3.string, false, true);

		// sounds used by the game
		for (i = 1;i < MAX_SOUNDS && cl.sound_name[i][0];i++)
			cl.sound_precache[i] = S_PrecacheSound(cl.sound_name[i], true, true);

		// we purge the models and sounds later in CL_SignonReply
		//S_PurgeUnused();

		// check memory integrity
		Mem_CheckSentinelsGlobal();

		// done with sound downloads, next we check models
		MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
		MSG_WriteString(&cls.netcon->message, va(vabuf, sizeof(vabuf), "modellist %i %i", cl.qw_servercount, 0));
		break;
	case dl_none:
	default:
		Con_Printf("Unknown download type.\n");
	}
}

static void QW_CL_ParseDownload(void)
{
	int size = (signed short)MSG_ReadShort(&cl_message);
	int percent = MSG_ReadByte(&cl_message);

	//Con_Printf("download %i %i%% (%i/%i)\n", size, percent, cls.qw_downloadmemorycursize, cls.qw_downloadmemorymaxsize);

	// skip the download fragment if playing a demo
	if (!cls.netcon)
	{
		if (size > 0)
			cl_message.readcount += size;
		return;
	}

	if (size == -1)
	{
		Con_Printf("File not found.\n");
		QW_CL_RequestNextDownload();
		return;
	}

	if (cl_message.readcount + (unsigned short)size > cl_message.cursize)
		Host_Error("corrupt download message\n");

	// make sure the buffer is big enough to include this new fragment
	if (!cls.qw_downloadmemory || cls.qw_downloadmemorymaxsize < cls.qw_downloadmemorycursize + size)
	{
		unsigned char *old;
		while (cls.qw_downloadmemorymaxsize < cls.qw_downloadmemorycursize + size)
			cls.qw_downloadmemorymaxsize *= 2;
		old = cls.qw_downloadmemory;
		cls.qw_downloadmemory = (unsigned char *)Mem_Alloc(cls.permanentmempool, cls.qw_downloadmemorymaxsize);
		if (old)
		{
			memcpy(cls.qw_downloadmemory, old, cls.qw_downloadmemorycursize);
			Mem_Free(old);
		}
	}

	// read the fragment out of the packet
	MSG_ReadBytes(&cl_message, size, cls.qw_downloadmemory + cls.qw_downloadmemorycursize);
	cls.qw_downloadmemorycursize += size;
	cls.qw_downloadspeedcount += size;

	cls.qw_downloadpercent = percent;

	if (percent != 100)
	{
		// request next fragment
		MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
		MSG_WriteString(&cls.netcon->message, "nextdl");
	}
	else
	{
		// finished file
		Con_Printf("Downloaded \"%s\"\n", cls.qw_downloadname);

		FS_WriteFile(cls.qw_downloadname, cls.qw_downloadmemory, cls.qw_downloadmemorycursize);

		cls.qw_downloadpercent = 0;

		// start downloading the next file (or join the game)
		QW_CL_RequestNextDownload();
	}
}

static void QW_CL_ParseModelList(void)
{
	int n;
	int nummodels = MSG_ReadByte(&cl_message);
	char *str;
	char vabuf[1024];

	// parse model precache list
	for (;;)
	{
		str = MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring));
		if (!str[0])
			break;
		nummodels++;
		if (nummodels==MAX_MODELS)
			Host_Error("Server sent too many model precaches");
		if (strlen(str) >= MAX_QPATH)
			Host_Error("Server sent a precache name of %i characters (max %i)", (int)strlen(str), MAX_QPATH - 1);
		strlcpy(cl.model_name[nummodels], str, sizeof (cl.model_name[nummodels]));
	}

	n = MSG_ReadByte(&cl_message);
	if (n)
	{
		MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
		MSG_WriteString(&cls.netcon->message, va(vabuf, sizeof(vabuf), "modellist %i %i", cl.qw_servercount, n));
		return;
	}

	cls.signon = 2;
	cls.qw_downloadnumber = 0;
	cls.qw_downloadtype = dl_model;
	QW_CL_RequestNextDownload();
}

static void QW_CL_ParseSoundList(void)
{
	int n;
	int numsounds = MSG_ReadByte(&cl_message);
	char *str;
	char vabuf[1024];

	// parse sound precache list
	for (;;)
	{
		str = MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring));
		if (!str[0])
			break;
		numsounds++;
		if (numsounds==MAX_SOUNDS)
			Host_Error("Server sent too many sound precaches");
		if (strlen(str) >= MAX_QPATH)
			Host_Error("Server sent a precache name of %i characters (max %i)", (int)strlen(str), MAX_QPATH - 1);
		strlcpy(cl.sound_name[numsounds], str, sizeof (cl.sound_name[numsounds]));
	}

	n = MSG_ReadByte(&cl_message);

	if (n)
	{
		MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
		MSG_WriteString(&cls.netcon->message, va(vabuf, sizeof(vabuf), "soundlist %i %i", cl.qw_servercount, n));
		return;
	}

	cls.signon = 2;
	cls.qw_downloadnumber = 0;
	cls.qw_downloadtype = dl_sound;
	QW_CL_RequestNextDownload();
}

static void QW_CL_Skins_f(void)
{
	cls.qw_downloadnumber = 0;
	cls.qw_downloadtype = dl_skin;
	QW_CL_RequestNextDownload();
}

static void QW_CL_Changing_f(void)
{
	if (cls.qw_downloadmemory)  // don't change when downloading
		return;

	S_StopAllSounds();
	cl.intermission = 0;
	cls.signon = 1;	// not active anymore, but not disconnected
	Con_Printf("\nChanging map...\n");
}

void QW_CL_NextUpload(void)
{
	int r, percent, size;

	if (!cls.qw_uploaddata)
		return;

	r = cls.qw_uploadsize - cls.qw_uploadpos;
	if (r > 768)
		r = 768;
	size = min(1, cls.qw_uploadsize);
	percent = (cls.qw_uploadpos+r)*100/size;

	MSG_WriteByte(&cls.netcon->message, qw_clc_upload);
	MSG_WriteShort(&cls.netcon->message, r);
	MSG_WriteByte(&cls.netcon->message, percent);
	SZ_Write(&cls.netcon->message, cls.qw_uploaddata + cls.qw_uploadpos, r);

	Con_DPrintf("UPLOAD: %6d: %d written\n", cls.qw_uploadpos, r);

	cls.qw_uploadpos += r;

	if (cls.qw_uploadpos < cls.qw_uploadsize)
		return;

	Con_Printf("Upload completed\n");

	QW_CL_StopUpload();
}

void QW_CL_StartUpload(unsigned char *data, int size)
{
	// do nothing in demos or if not connected
	if (!cls.netcon)
		return;

	// abort existing upload if in progress
	QW_CL_StopUpload();

	Con_DPrintf("Starting upload of %d bytes...\n", size);

	cls.qw_uploaddata = (unsigned char *)Mem_Alloc(cls.permanentmempool, size);
	memcpy(cls.qw_uploaddata, data, size);
	cls.qw_uploadsize = size;
	cls.qw_uploadpos = 0;

	QW_CL_NextUpload();
}

#if 0
qboolean QW_CL_IsUploading(void)
{
	return cls.qw_uploaddata != NULL;
}
#endif

void QW_CL_StopUpload(void)
{
	if (cls.qw_uploaddata)
		Mem_Free(cls.qw_uploaddata);
	cls.qw_uploaddata = NULL;
	cls.qw_uploadsize = 0;
	cls.qw_uploadpos = 0;
}

static void QW_CL_ProcessUserInfo(int slot)
{
	int topcolor, bottomcolor;
	char temp[2048];
	InfoString_GetValue(cl.scores[slot].qw_userinfo, "name", cl.scores[slot].name, sizeof(cl.scores[slot].name));
	InfoString_GetValue(cl.scores[slot].qw_userinfo, "topcolor", temp, sizeof(temp));topcolor = atoi(temp);
	InfoString_GetValue(cl.scores[slot].qw_userinfo, "bottomcolor", temp, sizeof(temp));bottomcolor = atoi(temp);
	cl.scores[slot].colors = topcolor * 16 + bottomcolor;
	InfoString_GetValue(cl.scores[slot].qw_userinfo, "*spectator", temp, sizeof(temp));
	cl.scores[slot].qw_spectator = temp[0] != 0;
	InfoString_GetValue(cl.scores[slot].qw_userinfo, "team", cl.scores[slot].qw_team, sizeof(cl.scores[slot].qw_team));
	InfoString_GetValue(cl.scores[slot].qw_userinfo, "skin", cl.scores[slot].qw_skin, sizeof(cl.scores[slot].qw_skin));
	if (!cl.scores[slot].qw_skin[0])
		strlcpy(cl.scores[slot].qw_skin, "base", sizeof(cl.scores[slot].qw_skin));
	// TODO: skin cache
}

static void QW_CL_UpdateUserInfo(void)
{
	int slot;
	slot = MSG_ReadByte(&cl_message);
	if (slot >= cl.maxclients)
	{
		Con_Printf("svc_updateuserinfo >= cl.maxclients\n");
		MSG_ReadLong(&cl_message);
		MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring));
		return;
	}
	cl.scores[slot].qw_userid = MSG_ReadLong(&cl_message);
	strlcpy(cl.scores[slot].qw_userinfo, MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(cl.scores[slot].qw_userinfo));

	QW_CL_ProcessUserInfo(slot);
}

static void QW_CL_SetInfo(void)
{
	int slot;
	char key[2048];
	char value[2048];
	slot = MSG_ReadByte(&cl_message);
	strlcpy(key, MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(key));
	strlcpy(value, MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(value));
	if (slot >= cl.maxclients)
	{
		Con_Printf("svc_setinfo >= cl.maxclients\n");
		return;
	}
	InfoString_SetValue(cl.scores[slot].qw_userinfo, sizeof(cl.scores[slot].qw_userinfo), key, value);

	QW_CL_ProcessUserInfo(slot);
}

static void QW_CL_ServerInfo(void)
{
	char key[2048];
	char value[2048];
	char temp[32];
	strlcpy(key, MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(key));
	strlcpy(value, MSG_ReadString(&cl_message, cl_readstring, sizeof(cl_readstring)), sizeof(value));
	Con_DPrintf("SERVERINFO: %s=%s\n", key, value);
	InfoString_SetValue(cl.qw_serverinfo, sizeof(cl.qw_serverinfo), key, value);
	InfoString_GetValue(cl.qw_serverinfo, "teamplay", temp, sizeof(temp));
	cl.qw_teamplay = atoi(temp);
}

static void QW_CL_ParseNails(void)
{
	int i, j;
	int numnails = MSG_ReadByte(&cl_message);
	vec_t *v;
	unsigned char bits[6];
	for (i = 0;i < numnails;i++)
	{
		for (j = 0;j < 6;j++)
			bits[j] = MSG_ReadByte(&cl_message);
		if (cl.qw_num_nails >= 255)
			continue;
		v = cl.qw_nails[cl.qw_num_nails++];
		v[0] = ( ( bits[0] + ((bits[1]&15)<<8) ) <<1) - 4096;
		v[1] = ( ( (bits[1]>>4) + (bits[2]<<4) ) <<1) - 4096;
		v[2] = ( ( bits[3] + ((bits[4]&15)<<8) ) <<1) - 4096;
		v[3] = -360*(bits[4]>>4)/16;
		v[4] = 360*bits[5]/256;
		v[5] = 0;
	}
}

static void CL_UpdateItemsAndWeapon(void)
{
	int j;
	// check for important changes

	// set flash times
	if (cl.olditems != cl.stats[STAT_ITEMS])
		for (j = 0;j < 32;j++)
			if ((cl.stats[STAT_ITEMS] & (1<<j)) && !(cl.olditems & (1<<j)))
				cl.item_gettime[j] = cl.time;
	cl.olditems = cl.stats[STAT_ITEMS];

	// GAME_NEXUIZ hud needs weapon change time
	if (cl.activeweapon != cl.stats[STAT_ACTIVEWEAPON])
		cl.weapontime = cl.time;
	cl.activeweapon = cl.stats[STAT_ACTIVEWEAPON];
}

#define LOADPROGRESSWEIGHT_SOUND            1.0
#define LOADPROGRESSWEIGHT_MODEL            4.0
#define LOADPROGRESSWEIGHT_WORLDMODEL      30.0
#define LOADPROGRESSWEIGHT_WORLDMODEL_INIT  2.0

static void CL_BeginDownloads(qboolean aborteddownload)
{
	char vabuf[1024];
	// quakeworld works differently
	if (cls.protocol == PROTOCOL_QUAKEWORLD)
		return;

	// this would be a good place to do curl downloads
	if(Curl_Have_forthismap())
	{
		Curl_Register_predownload(); // come back later
		return;
	}

	// if we got here...
	// curl is done, so let's start with the business
	if(!cl.loadbegun)
		SCR_PushLoadingScreen(false, "Loading precaches", 1);
	cl.loadbegun = true;

	// if already downloading something from the previous level, don't stop it
	if (cls.qw_downloadname[0])
		return;

	if (cl.downloadcsqc)
	{
		size_t progsize;
		cl.downloadcsqc = false;
		if (cls.netcon
		 && !sv.active
		 && csqc_progname.string
		 && csqc_progname.string[0]
		 && csqc_progcrc.integer >= 0
		 && cl_serverextension_download.integer
		 && (FS_CRCFile(csqc_progname.string, &progsize) != csqc_progcrc.integer || ((int)progsize != csqc_progsize.integer && csqc_progsize.integer != -1))
		 && !FS_FileExists(va(vabuf, sizeof(vabuf), "dlcache/%s.%i.%i", csqc_progname.string, csqc_progsize.integer, csqc_progcrc.integer)))
		{
			Con_Printf("Downloading new CSQC code to dlcache/%s.%i.%i\n", csqc_progname.string, csqc_progsize.integer, csqc_progcrc.integer);
			if(cl_serverextension_download.integer == 2 && FS_HasZlib())
				Cmd_ForwardStringToServer(va(vabuf, sizeof(vabuf), "download %s deflate", csqc_progname.string));
			else
				Cmd_ForwardStringToServer(va(vabuf, sizeof(vabuf), "download %s", csqc_progname.string));
			return;
		}
	}

	if (cl.loadmodel_current < cl.loadmodel_total)
	{
		// loading models
		if(cl.loadmodel_current == 1)
		{
			// worldmodel counts as 16 models (15 + world model setup), for better progress bar
			SCR_PushLoadingScreen(false, "Loading precached models",
				(
					(cl.loadmodel_total - 1) * LOADPROGRESSWEIGHT_MODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL_INIT
				) / (
					(cl.loadmodel_total - 1) * LOADPROGRESSWEIGHT_MODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL_INIT
				+	cl.loadsound_total * LOADPROGRESSWEIGHT_SOUND
				)
			);
			SCR_BeginLoadingPlaque(false);
		}
		for (;cl.loadmodel_current < cl.loadmodel_total;cl.loadmodel_current++)
		{
			SCR_PushLoadingScreen(false, cl.model_name[cl.loadmodel_current],
				(
					(cl.loadmodel_current == 1) ? LOADPROGRESSWEIGHT_WORLDMODEL : LOADPROGRESSWEIGHT_MODEL
				) / (
					(cl.loadmodel_total - 1) * LOADPROGRESSWEIGHT_MODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL_INIT
				)
			);
			if (cl.model_precache[cl.loadmodel_current] && cl.model_precache[cl.loadmodel_current]->Draw)
			{
				SCR_PopLoadingScreen(false);
				if(cl.loadmodel_current == 1)
				{
					SCR_PushLoadingScreen(false, cl.model_name[cl.loadmodel_current], 1.0 / cl.loadmodel_total);
					SCR_PopLoadingScreen(false);
				}
				continue;
			}
			CL_KeepaliveMessage(true);

			// if running a local game, calling Mod_ForName is a completely wasted effort...
			if (sv.active)
				cl.model_precache[cl.loadmodel_current] = sv.models[cl.loadmodel_current];
			else
			{
				if(cl.loadmodel_current == 1)
				{
					// they'll be soon loaded, but make sure we apply freshly downloaded shaders from a curled pk3
					Mod_FreeQ3Shaders();
				}
				cl.model_precache[cl.loadmodel_current] = Mod_ForName(cl.model_name[cl.loadmodel_current], false, false, cl.model_name[cl.loadmodel_current][0] == '*' ? cl.model_name[1] : NULL);
			}
			SCR_PopLoadingScreen(false);
			if (cl.model_precache[cl.loadmodel_current] && cl.model_precache[cl.loadmodel_current]->Draw && cl.loadmodel_current == 1)
			{
				// we now have the worldmodel so we can set up the game world
				SCR_PushLoadingScreen(true, "world model setup",
					(
						LOADPROGRESSWEIGHT_WORLDMODEL_INIT
					) / (
						(cl.loadmodel_total - 1) * LOADPROGRESSWEIGHT_MODEL
					+	LOADPROGRESSWEIGHT_WORLDMODEL
					+	LOADPROGRESSWEIGHT_WORLDMODEL_INIT
					)
				);
				CL_SetupWorldModel();
				SCR_PopLoadingScreen(true);
				if (!cl.loadfinished && cl_joinbeforedownloadsfinish.integer)
				{
					cl.loadfinished = true;
					// now issue the spawn to move on to signon 2 like normal
					if (cls.netcon)
						Cmd_ForwardStringToServer("prespawn");
				}
			}
		}
		SCR_PopLoadingScreen(false);
		// finished loading models
	}

	if (cl.loadsound_current < cl.loadsound_total)
	{
		// loading sounds
		if(cl.loadsound_current == 1)
			SCR_PushLoadingScreen(false, "Loading precached sounds",
				(
					cl.loadsound_total * LOADPROGRESSWEIGHT_SOUND
				) / (
					(cl.loadmodel_total - 1) * LOADPROGRESSWEIGHT_MODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL
				+	LOADPROGRESSWEIGHT_WORLDMODEL_INIT
				+	cl.loadsound_total * LOADPROGRESSWEIGHT_SOUND
				)
			);
		for (;cl.loadsound_current < cl.loadsound_total;cl.loadsound_current++)
		{
			SCR_PushLoadingScreen(false, cl.sound_name[cl.loadsound_current], 1.0 / cl.loadsound_total);
			if (cl.sound_precache[cl.loadsound_current] && S_IsSoundPrecached(cl.sound_precache[cl.loadsound_current]))
			{
				SCR_PopLoadingScreen(false);
				continue;
			}
			CL_KeepaliveMessage(true);
			cl.sound_precache[cl.loadsound_current] = S_PrecacheSound(cl.sound_name[cl.loadsound_current], false, true);
			SCR_PopLoadingScreen(false);
		}
		SCR_PopLoadingScreen(false);
		// finished loading sounds
	}

	if(IS_NEXUIZ_DERIVED(gamemode))
		Cvar_SetValueQuick(&cl_serverextension_download, false);
		// in Nexuiz/Xonotic, the built in download protocol is kinda broken (misses lots
		// of dependencies) anyway, and can mess around with the game directory;
		// until this is fixed, only support pk3 downloads via curl, and turn off
		// individual file downloads other than for CSQC
		// on the other end of the download protocol, GAME_NEXUIZ/GAME_XONOTIC enforces writing
		// to dlcache only
		// idea: support download of pk3 files using this protocol later

	// note: the reason these loops skip already-loaded things is that it
	// enables this command to be issued during the game if desired

	if (cl.downloadmodel_current < cl.loadmodel_total)
	{
		// loading models

		for (;cl.downloadmodel_current < cl.loadmodel_total;cl.downloadmodel_current++)
		{
			if (aborteddownload)
			{

				if (cl.downloadmodel_current == 1)
				{
					// the worldmodel failed, but we need to set up anyway
					Mod_FreeQ3Shaders();
					CL_SetupWorldModel();
					if (!cl.loadfinished && cl_joinbeforedownloadsfinish.integer)
					{
						cl.loadfinished = true;
						// now issue the spawn to move on to signon 2 like normal
						if (cls.netcon)
							Cmd_ForwardStringToServer("prespawn");
					}
				}
				aborteddownload = false;
				continue;
			}
			if (cl.model_precache[cl.downloadmodel_current] && cl.model_precache[cl.downloadmodel_current]->Draw)
				continue;
			CL_KeepaliveMessage(true);
			if (cl.model_name[cl.downloadmodel_current][0] != '*' && strcmp(cl.model_name[cl.downloadmodel_current], "null") && !FS_FileExists(cl.model_name[cl.downloadmodel_current]))
			{
				if (cl.downloadmodel_current == 1)
					Con_Printf("Map %s not found\n", cl.model_name[cl.downloadmodel_current]);
				else
					Con_Printf("Model %s not found\n", cl.model_name[cl.downloadmodel_current]);
				// regarding the * check: don't try to download submodels
				if (cl_serverextension_download.integer && cls.netcon && cl.model_name[cl.downloadmodel_current][0] != '*' && !sv.active)
				{
					Cmd_ForwardStringToServer(va(vabuf, sizeof(vabuf), "download %s", cl.model_name[cl.downloadmodel_current]));
					// we'll try loading again when the download finishes
					return;
				}
			}

			if(cl.downloadmodel_current == 1)
			{
				// they'll be soon loaded, but make sure we apply freshly downloaded shaders from a curled pk3
				Mod_FreeQ3Shaders();
			}

			cl.model_precache[cl.downloadmodel_current] = Mod_ForName(cl.model_name[cl.downloadmodel_current], false, true, cl.model_name[cl.downloadmodel_current][0] == '*' ? cl.model_name[1] : NULL);
			if (cl.downloadmodel_current == 1)
			{
				// we now have the worldmodel so we can set up the game world
				// or maybe we do not have it (cl_serverextension_download 0)
				// then we need to continue loading ANYWAY!
				CL_SetupWorldModel();
				if (!cl.loadfinished && cl_joinbeforedownloadsfinish.integer)
				{
					cl.loadfinished = true;
					// now issue the spawn to move on to signon 2 like normal
					if (cls.netcon)
						Cmd_ForwardStringToServer("prespawn");
				}
			}
		}

		// finished loading models
	}

	if (cl.downloadsound_current < cl.loadsound_total)
	{
		// loading sounds

		for (;cl.downloadsound_current < cl.loadsound_total;cl.downloadsound_current++)
		{
			char soundname[MAX_QPATH];
			if (aborteddownload)
			{
				aborteddownload = false;
				continue;
			}
			if (cl.sound_precache[cl.downloadsound_current] && S_IsSoundPrecached(cl.sound_precache[cl.downloadsound_current]))
				continue;
			CL_KeepaliveMessage(true);
			dpsnprintf(soundname, sizeof(soundname), "sound/%s", cl.sound_name[cl.downloadsound_current]);
			if (!FS_FileExists(soundname) && !FS_FileExists(cl.sound_name[cl.downloadsound_current]))
			{
				Con_Printf("Sound %s not found\n", soundname);
				if (cl_serverextension_download.integer && cls.netcon && !sv.active)
				{
					Cmd_ForwardStringToServer(va(vabuf, sizeof(vabuf), "download %s", soundname));
					// we'll try loading again when the download finishes
					return;
				}
			}
			cl.sound_precache[cl.downloadsound_current] = S_PrecacheSound(cl.sound_name[cl.downloadsound_current], false, true);
		}

		// finished loading sounds
	}

	SCR_PopLoadingScreen(false);

	if (!cl.loadfinished)
	{
		cl.loadfinished = true;

		// check memory integrity
		Mem_CheckSentinelsGlobal();

		// now issue the spawn to move on to signon 2 like normal
		if (cls.netcon)
			Cmd_ForwardStringToServer("prespawn");
	}
}

static void CL_BeginDownloads_f(void)
{
	// prevent cl_begindownloads from being issued multiple times in one match
	// to prevent accidentally cancelled downloads
	if(cl.loadbegun)
		Con_Printf("cl_begindownloads is only valid once per match\n");
	else
		CL_BeginDownloads(false);
}

static void CL_StopDownload(int size, int crc)
{
	if (cls.qw_downloadmemory && cls.qw_downloadmemorycursize == size && CRC_Block(cls.qw_downloadmemory, cls.qw_downloadmemorycursize) == crc)
	{
		int existingcrc;
		size_t existingsize;
		const char *extension;

		if(cls.qw_download_deflate)
		{
			unsigned char *out;
			size_t inflated_size;
			out = FS_Inflate(cls.qw_downloadmemory, cls.qw_downloadmemorycursize, &inflated_size, tempmempool);
			Mem_Free(cls.qw_downloadmemory);
			if(out)
			{
				Con_Printf("Inflated download: new size: %u (%g%%)\n", (unsigned)inflated_size, 100.0 - 100.0*(cls.qw_downloadmemorycursize / (float)inflated_size));
				cls.qw_downloadmemory = out;
				cls.qw_downloadmemorycursize = (int)inflated_size;
			}
			else
			{
				cls.qw_downloadmemory = NULL;
				cls.qw_downloadmemorycursize = 0;
				Con_Printf("Cannot inflate download, possibly corrupt or zlib not present\n");
			}
		}

		if(!cls.qw_downloadmemory)
		{
			Con_Printf("Download \"%s\" is corrupt (see above!)\n", cls.qw_downloadname);
		}
		else
		{
			crc = CRC_Block(cls.qw_downloadmemory, cls.qw_downloadmemorycursize);
			size = cls.qw_downloadmemorycursize;
			// finished file
			// save to disk only if we don't already have it
			// (this is mainly for playing back demos)
			existingcrc = FS_CRCFile(cls.qw_downloadname, &existingsize);
			if (existingsize || IS_NEXUIZ_DERIVED(gamemode) || !strcmp(cls.qw_downloadname, csqc_progname.string))
				// let csprogs ALWAYS go to dlcache, to prevent "viral csprogs"; also, never put files outside dlcache for Nexuiz/Xonotic
			{
				if ((int)existingsize != size || existingcrc != crc)
				{
					// we have a mismatching file, pick another name for it
					char name[MAX_QPATH*2];
					dpsnprintf(name, sizeof(name), "dlcache/%s.%i.%i", cls.qw_downloadname, size, crc);
					if (!FS_FileExists(name))
					{
						Con_Printf("Downloaded \"%s\" (%i bytes, %i CRC)\n", name, size, crc);
						FS_WriteFile(name, cls.qw_downloadmemory, cls.qw_downloadmemorycursize);
						if(!strcmp(cls.qw_downloadname, csqc_progname.string))
						{
							if(cls.caughtcsprogsdata)
								Mem_Free(cls.caughtcsprogsdata);
							cls.caughtcsprogsdata = (unsigned char *) Mem_Alloc(cls.permanentmempool, cls.qw_downloadmemorycursize);
							memcpy(cls.caughtcsprogsdata, cls.qw_downloadmemory, cls.qw_downloadmemorycursize);
							cls.caughtcsprogsdatasize = cls.qw_downloadmemorycursize;
							Con_DPrintf("Buffered \"%s\"\n", name);
						}
					}
				}
			}
			else
			{
				// we either don't have it or have a mismatching file...
				// so it's time to accept the file
				// but if we already have a mismatching file we need to rename
				// this new one, and if we already have this file in renamed form,
				// we do nothing
				Con_Printf("Downloaded \"%s\" (%i bytes, %i CRC)\n", cls.qw_downloadname, size, crc);
				FS_WriteFile(cls.qw_downloadname, cls.qw_downloadmemory, cls.qw_downloadmemorycursize);
				extension = FS_FileExtension(cls.qw_downloadname);
				if (!strcasecmp(extension, "pak") || !strcasecmp(extension, "pk3"))
					FS_Rescan();
			}
		}
	}
	else if (cls.qw_downloadmemory && size)
	{
		Con_Printf("Download \"%s\" is corrupt (%i bytes, %i CRC, should be %i bytes, %i CRC), discarding\n", cls.qw_downloadname, size, crc, (int)cls.qw_downloadmemorycursize, (int)CRC_Block(cls.qw_downloadmemory, c…