/*
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.

*/
// sv_main.c -- server main program

#include "quakedef.h"
#include "libcurl.h"

void SV_VM_Init();
void SV_VM_Setup();

void VM_AutoSentStats_Clear (void);
void EntityFrameCSQC_ClearVersions (void);
void EntityFrameCSQC_InitClientVersions (int client, qboolean clear);
void VM_SV_WriteAutoSentStats (client_t *client, prvm_edict_t *ent, sizebuf_t *msg, int *stats);
void EntityFrameCSQC_WriteFrame (sizebuf_t *msg, int numstates, const entity_state_t *states);


// select which protocol to host, this is fed to Protocol_EnumForName
cvar_t sv_protocolname = {0, "sv_protocolname", "DP7", "selects network protocol to host for (values include QUAKE, QUAKEDP, NEHAHRAMOVIE, DP1 and up)"};
cvar_t sv_ratelimitlocalplayer = {0, "sv_ratelimitlocalplayer", "0", "whether to apply rate limiting to the local player in a listen server (only useful for testing)"};
cvar_t sv_maxrate = {CVAR_SAVE | CVAR_NOTIFY, "sv_maxrate", "10000", "upper limit on client rate cvar, should reflect your network connection quality"};

static cvar_t sv_cullentities_pvs = {0, "sv_cullentities_pvs", "1", "fast but loose culling of hidden entities"}; // fast but loose
static cvar_t sv_cullentities_trace = {0, "sv_cullentities_trace", "0", "somewhat slow but very tight culling of hidden entities, minimizes network traffic and makes wallhack cheats useless"}; // tends to get false negatives, uses a timeout to keep entities visible a short time after becoming hidden
static cvar_t sv_cullentities_stats = {0, "sv_cullentities_stats", "0", "displays stats on network entities culled by various methods for each client"};
static cvar_t sv_entpatch = {0, "sv_entpatch", "1", "enables loading of .ent files to override entities in the bsp (for example Threewave CTF server pack contains .ent patch files enabling play of CTF on id1 maps)"};

cvar_t sv_gameplayfix_grenadebouncedownslopes = {0, "sv_gameplayfix_grenadebouncedownslopes", "1", "prevents MOVETYPE_BOUNCE (grenades) from getting stuck when fired down a downward sloping surface"};
cvar_t sv_gameplayfix_noairborncorpse = {0, "sv_gameplayfix_noairborncorpse", "1", "causes entities (corpses) sitting ontop of moving entities (players) to fall when the moving entity (player) is no longer supporting them"};
cvar_t sv_gameplayfix_stepdown = {0, "sv_gameplayfix_stepdown", "0", "attempts to step down stairs, not just up them (prevents the familiar thud..thud..thud.. when running down stairs and slopes)"};
cvar_t sv_gameplayfix_stepwhilejumping = {0, "sv_gameplayfix_stepwhilejumping", "1", "applies step-up onto a ledge even while airborn, useful if you would otherwise just-miss the floor when running across small areas with gaps (for instance running across the moving platforms in dm2, or jumping to the megahealth and red armor in dm2 rather than using the bridge)"};
cvar_t sv_gameplayfix_swiminbmodels = {0, "sv_gameplayfix_swiminbmodels", "1", "causes pointcontents (used to determine if you are in a liquid) to check bmodel entities as well as the world model, so you can swim around in (possibly moving) water bmodel entities"};
cvar_t sv_gameplayfix_setmodelrealbox = {0, "sv_gameplayfix_setmodelrealbox", "1", "fixes a bug in Quake that made setmodel always set the entity box to ('-16 -16 -16', '16 16 16') rather than properly checking the model box, breaks some poorly coded mods"};
cvar_t sv_gameplayfix_blowupfallenzombies = {0, "sv_gameplayfix_blowupfallenzombies", "1", "causes findradius to detect SOLID_NOT entities such as zombies and corpses on the floor, allowing splash damage to apply to them"};
cvar_t sv_gameplayfix_findradiusdistancetobox = {0, "sv_gameplayfix_findradiusdistancetobox", "1", "causes findradius to check the distance to the corner of a box rather than the center of the box, makes findradius detect bmodels such as very large doors that would otherwise be unaffected by splash damage"};
cvar_t sv_gameplayfix_qwplayerphysics = {0, "sv_gameplayfix_qwplayerphysics", "1", "changes water jumping to make it easier to get out of water, and prevents friction on landing when bunnyhopping"};
cvar_t sv_gameplayfix_upwardvelocityclearsongroundflag = {0, "sv_gameplayfix_upwardvelocityclearsongroundflag", "1", "prevents monsters, items, and most other objects from being stuck to the floor when pushed around by damage, and other situations in mods"};

cvar_t sv_progs = {0, "sv_progs", "progs.dat", "selects which quakec progs.dat file to run" };

// TODO: move these cvars here
extern cvar_t sv_clmovement_enable;
extern cvar_t sv_clmovement_minping;
extern cvar_t sv_clmovement_minping_disabletime;
extern cvar_t sv_clmovement_waitforinput;

server_t sv;
server_static_t svs;

mempool_t *sv_mempool = NULL;

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

extern void SV_Phys_Init (void);
extern void SV_World_Init (void);
static void SV_SaveEntFile_f(void);

/*
===============
SV_Init
===============
*/
void SV_Init (void)
{
	// init the csqc progs cvars, since they are updated/used by the server code
	// TODO: fix this since this is a quick hack to make some of [515]'s broken code run ;) [9/13/2006 Black]
	extern cvar_t csqc_progname;	//[515]: csqc crc check and right csprogs name according to progs.dat
	extern cvar_t csqc_progcrc;
	Cvar_RegisterVariable (&csqc_progname);
	Cvar_RegisterVariable (&csqc_progcrc);

	Cmd_AddCommand("sv_saveentfile", SV_SaveEntFile_f, "save map entities to .ent file (to allow external editing)");
	Cvar_RegisterVariable (&sv_maxvelocity);
	Cvar_RegisterVariable (&sv_gravity);
	Cvar_RegisterVariable (&sv_friction);
	Cvar_RegisterVariable (&sv_waterfriction);
	Cvar_RegisterVariable (&sv_edgefriction);
	Cvar_RegisterVariable (&sv_stopspeed);
	Cvar_RegisterVariable (&sv_maxspeed);
	Cvar_RegisterVariable (&sv_maxairspeed);
	Cvar_RegisterVariable (&sv_accelerate);
	Cvar_RegisterVariable (&sv_airaccelerate);
	Cvar_RegisterVariable (&sv_wateraccelerate);
	Cvar_RegisterVariable (&sv_clmovement_enable);
	Cvar_RegisterVariable (&sv_clmovement_minping);
	Cvar_RegisterVariable (&sv_clmovement_minping_disabletime);
	Cvar_RegisterVariable (&sv_clmovement_waitforinput);
	Cvar_RegisterVariable (&sv_idealpitchscale);
	Cvar_RegisterVariable (&sv_aim);
	Cvar_RegisterVariable (&sv_nostep);
	Cvar_RegisterVariable (&sv_cullentities_pvs);
	Cvar_RegisterVariable (&sv_cullentities_trace);
	Cvar_RegisterVariable (&sv_cullentities_stats);
	Cvar_RegisterVariable (&sv_entpatch);
	Cvar_RegisterVariable (&sv_gameplayfix_grenadebouncedownslopes);
	Cvar_RegisterVariable (&sv_gameplayfix_noairborncorpse);
	Cvar_RegisterVariable (&sv_gameplayfix_stepdown);
	Cvar_RegisterVariable (&sv_gameplayfix_stepwhilejumping);
	Cvar_RegisterVariable (&sv_gameplayfix_swiminbmodels);
	Cvar_RegisterVariable (&sv_gameplayfix_setmodelrealbox);
	Cvar_RegisterVariable (&sv_gameplayfix_blowupfallenzombies);
	Cvar_RegisterVariable (&sv_gameplayfix_findradiusdistancetobox);
	Cvar_RegisterVariable (&sv_gameplayfix_qwplayerphysics);
	Cvar_RegisterVariable (&sv_gameplayfix_upwardvelocityclearsongroundflag);
	Cvar_RegisterVariable (&sv_protocolname);
	Cvar_RegisterVariable (&sv_ratelimitlocalplayer);
	Cvar_RegisterVariable (&sv_maxrate);
	Cvar_RegisterVariable (&sv_progs);

	SV_VM_Init();
	SV_Phys_Init();
	SV_World_Init();

	sv_mempool = Mem_AllocPool("server", 0, NULL);
}

static void SV_SaveEntFile_f(void)
{
	char basename[MAX_QPATH];
	if (!sv.active || !sv.worldmodel)
	{
		Con_Print("Not running a server\n");
		return;
	}
	FS_StripExtension(sv.worldmodel->name, basename, sizeof(basename));
	FS_WriteFile(va("%s.ent", basename), sv.worldmodel->brush.entities, (fs_offset_t)strlen(sv.worldmodel->brush.entities));
}


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

EVENT MESSAGES

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

/*
==================
SV_StartParticle

Make sure the event gets sent to all clients
==================
*/
void SV_StartParticle (vec3_t org, vec3_t dir, int color, int count)
{
	int i;

	if (sv.datagram.cursize > MAX_PACKETFRAGMENT-18)
		return;
	MSG_WriteByte (&sv.datagram, svc_particle);
	MSG_WriteCoord (&sv.datagram, org[0], sv.protocol);
	MSG_WriteCoord (&sv.datagram, org[1], sv.protocol);
	MSG_WriteCoord (&sv.datagram, org[2], sv.protocol);
	for (i=0 ; i<3 ; i++)
		MSG_WriteChar (&sv.datagram, (int)bound(-128, dir[i]*16, 127));
	MSG_WriteByte (&sv.datagram, count);
	MSG_WriteByte (&sv.datagram, color);
}

/*
==================
SV_StartEffect

Make sure the event gets sent to all clients
==================
*/
void SV_StartEffect (vec3_t org, int modelindex, int startframe, int framecount, int framerate)
{
	if (modelindex >= 256 || startframe >= 256)
	{
		if (sv.datagram.cursize > MAX_PACKETFRAGMENT-19)
			return;
		MSG_WriteByte (&sv.datagram, svc_effect2);
		MSG_WriteCoord (&sv.datagram, org[0], sv.protocol);
		MSG_WriteCoord (&sv.datagram, org[1], sv.protocol);
		MSG_WriteCoord (&sv.datagram, org[2], sv.protocol);
		MSG_WriteShort (&sv.datagram, modelindex);
		MSG_WriteShort (&sv.datagram, startframe);
		MSG_WriteByte (&sv.datagram, framecount);
		MSG_WriteByte (&sv.datagram, framerate);
	}
	else
	{
		if (sv.datagram.cursize > MAX_PACKETFRAGMENT-17)
			return;
		MSG_WriteByte (&sv.datagram, svc_effect);
		MSG_WriteCoord (&sv.datagram, org[0], sv.protocol);
		MSG_WriteCoord (&sv.datagram, org[1], sv.protocol);
		MSG_WriteCoord (&sv.datagram, org[2], sv.protocol);
		MSG_WriteByte (&sv.datagram, modelindex);
		MSG_WriteByte (&sv.datagram, startframe);
		MSG_WriteByte (&sv.datagram, framecount);
		MSG_WriteByte (&sv.datagram, framerate);
	}
}

/*
==================
SV_StartSound

Each entity can have eight independant sound sources, like voice,
weapon, feet, etc.

Channel 0 is an auto-allocate channel, the others override anything
already running on that entity/channel pair.

An attenuation of 0 will play full volume everywhere in the level.
Larger attenuations will drop off.  (max 4 attenuation)

==================
*/
void SV_StartSound (prvm_edict_t *entity, int channel, const char *sample, int volume, float attenuation)
{
	int sound_num, field_mask, i, ent;

	if (volume < 0 || volume > 255)
	{
		Con_Printf ("SV_StartSound: volume = %i\n", volume);
		return;
	}

	if (attenuation < 0 || attenuation > 4)
	{
		Con_Printf ("SV_StartSound: attenuation = %f\n", attenuation);
		return;
	}

	if (channel < 0 || channel > 7)
	{
		Con_Printf ("SV_StartSound: channel = %i\n", channel);
		return;
	}

	if (sv.datagram.cursize > MAX_PACKETFRAGMENT-21)
		return;

// find precache number for sound
	sound_num = SV_SoundIndex(sample, 1);
	if (!sound_num)
		return;

	ent = PRVM_NUM_FOR_EDICT(entity);

	field_mask = 0;
	if (volume != DEFAULT_SOUND_PACKET_VOLUME)
		field_mask |= SND_VOLUME;
	if (attenuation != DEFAULT_SOUND_PACKET_ATTENUATION)
		field_mask |= SND_ATTENUATION;
	if (ent >= 8192)
		field_mask |= SND_LARGEENTITY;
	if (sound_num >= 256 || channel >= 8)
		field_mask |= SND_LARGESOUND;

// directed messages go only to the entity they are targeted on
	MSG_WriteByte (&sv.datagram, svc_sound);
	MSG_WriteByte (&sv.datagram, field_mask);
	if (field_mask & SND_VOLUME)
		MSG_WriteByte (&sv.datagram, volume);
	if (field_mask & SND_ATTENUATION)
		MSG_WriteByte (&sv.datagram, (int)(attenuation*64));
	if (field_mask & SND_LARGEENTITY)
	{
		MSG_WriteShort (&sv.datagram, ent);
		MSG_WriteByte (&sv.datagram, channel);
	}
	else
		MSG_WriteShort (&sv.datagram, (ent<<3) | channel);
	if (field_mask & SND_LARGESOUND)
		MSG_WriteShort (&sv.datagram, sound_num);
	else
		MSG_WriteByte (&sv.datagram, sound_num);
	for (i = 0;i < 3;i++)
		MSG_WriteCoord (&sv.datagram, entity->fields.server->origin[i]+0.5*(entity->fields.server->mins[i]+entity->fields.server->maxs[i]), sv.protocol);
}

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

CLIENT SPAWNING

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

/*
================
SV_SendServerinfo

Sends the first message from the server to a connected client.
This will be sent on the initial connection and upon each server load.
================
*/
void SV_SendServerinfo (client_t *client)
{
	int i;
	char message[128];

	// we know that this client has a netconnection and thus is not a bot

	// edicts get reallocated on level changes, so we need to update it here
	client->edict = PRVM_EDICT_NUM((client - svs.clients) + 1);

	// clear cached stuff that depends on the level
	client->weaponmodel[0] = 0;
	client->weaponmodelindex = 0;

	// LordHavoc: clear entityframe tracking
	client->latestframenum = 0;

	if (client->entitydatabase)
		EntityFrame_FreeDatabase(client->entitydatabase);
	if (client->entitydatabase4)
		EntityFrame4_FreeDatabase(client->entitydatabase4);
	if (client->entitydatabase5)
		EntityFrame5_FreeDatabase(client->entitydatabase5);

	if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE)
	{
		if (sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3)
			client->entitydatabase = EntityFrame_AllocDatabase(sv_mempool);
		else if (sv.protocol == PROTOCOL_DARKPLACES4)
			client->entitydatabase4 = EntityFrame4_AllocDatabase(sv_mempool);
		else
			client->entitydatabase5 = EntityFrame5_AllocDatabase(sv_mempool);
	}

	SZ_Clear (&client->netconnection->message);
	MSG_WriteByte (&client->netconnection->message, svc_print);
	dpsnprintf (message, sizeof (message), "\nServer: %s build %s (progs %i crc)", gamename, buildstring, prog->filecrc);
	MSG_WriteString (&client->netconnection->message,message);

	//[515]: init csprogs according to version of svprogs, check the crc, etc.
	if (sv.csqc_progcrc >= 0)
	{
		prvm_eval_t *val;
		Con_DPrintf("sending csqc info to client (\"%s\" with crc %i)\n", sv.csqc_progname, sv.csqc_progcrc);
		//[515]: init stufftext string (it is sent before svc_serverinfo)
		val = PRVM_GETGLOBALFIELDVALUE(PRVM_ED_FindGlobalOffset("SV_InitCmd"));
		MSG_WriteByte (&client->netconnection->message, svc_stufftext);
		MSG_WriteString (&client->netconnection->message, va("csqc_progname %s\n", sv.csqc_progname));
		MSG_WriteByte (&client->netconnection->message, svc_stufftext);
		MSG_WriteString (&client->netconnection->message, va("csqc_progcrc %i\n", sv.csqc_progcrc));
		if (val)
		{
			MSG_WriteByte (&client->netconnection->message, svc_stufftext);
			MSG_WriteString (&client->netconnection->message, va("%s\n", PRVM_GetString(val->string)));
		}
	}

	MSG_WriteByte (&client->netconnection->message, svc_serverinfo);
	MSG_WriteLong (&client->netconnection->message, Protocol_NumberForEnum(sv.protocol));
	MSG_WriteByte (&client->netconnection->message, svs.maxclients);

	if (!coop.integer && deathmatch.integer)
		MSG_WriteByte (&client->netconnection->message, GAME_DEATHMATCH);
	else
		MSG_WriteByte (&client->netconnection->message, GAME_COOP);

	MSG_WriteString (&client->netconnection->message,PRVM_GetString(prog->edicts->fields.server->message));

	for (i = 1;i < MAX_MODELS && sv.model_precache[i][0];i++)
		MSG_WriteString (&client->netconnection->message, sv.model_precache[i]);
	MSG_WriteByte (&client->netconnection->message, 0);

	for (i = 1;i < MAX_SOUNDS && sv.sound_precache[i][0];i++)
		MSG_WriteString (&client->netconnection->message, sv.sound_precache[i]);
	MSG_WriteByte (&client->netconnection->message, 0);

// send music
	MSG_WriteByte (&client->netconnection->message, svc_cdtrack);
	MSG_WriteByte (&client->netconnection->message, (int)prog->edicts->fields.server->sounds);
	MSG_WriteByte (&client->netconnection->message, (int)prog->edicts->fields.server->sounds);

// set view
	MSG_WriteByte (&client->netconnection->message, svc_setview);
	MSG_WriteShort (&client->netconnection->message, PRVM_NUM_FOR_EDICT(client->edict));

	MSG_WriteByte (&client->netconnection->message, svc_signonnum);
	MSG_WriteByte (&client->netconnection->message, 1);

	{
		client_t *save;
		save = host_client;
		host_client = client;
		Curl_SendRequirements();
		host_client = save;
	}

	client->spawned = false;		// need prespawn, spawn, etc
}

/*
================
SV_ConnectClient

Initializes a client_t for a new net connection.  This will only be called
once for a player each game, not once for each level change.
================
*/
void SV_ConnectClient (int clientnum, netconn_t *netconnection)
{
	client_t		*client;
	int				i;
	float			spawn_parms[NUM_SPAWN_PARMS];

	client = svs.clients + clientnum;

	if(netconnection)//[515]: bots don't play with csqc =)
		EntityFrameCSQC_InitClientVersions(clientnum, false);

// set up the client_t
	if (sv.loadgame)
		memcpy (spawn_parms, client->spawn_parms, sizeof(spawn_parms));
	memset (client, 0, sizeof(*client));
	client->active = true;
	client->netconnection = netconnection;

	Con_DPrintf("Client %s connected\n", client->netconnection ? client->netconnection->address : "botclient");

	strlcpy(client->name, "unconnected", sizeof(client->name));
	strlcpy(client->old_name, "unconnected", sizeof(client->old_name));
	client->spawned = false;
	client->edict = PRVM_EDICT_NUM(clientnum+1);
	if (client->netconnection)
		client->netconnection->message.allowoverflow = true;		// we can catch it
	// updated by receiving "rate" command from client
	client->rate = NET_MINRATE;
	// no limits for local player
	if (client->netconnection && LHNETADDRESS_GetAddressType(&client->netconnection->peeraddress) == LHNETADDRESSTYPE_LOOP)
		client->rate = 1000000000;
	client->connecttime = realtime;

	if (sv.loadgame)
		memcpy (client->spawn_parms, spawn_parms, sizeof(spawn_parms));
	else
	{
		// call the progs to get default spawn parms for the new client
		// set self to world to intentionally cause errors with broken SetNewParms code in some mods
		prog->globals.server->self = 0;
		PRVM_ExecuteProgram (prog->globals.server->SetNewParms, "QC function SetNewParms is missing");
		for (i=0 ; i<NUM_SPAWN_PARMS ; i++)
			client->spawn_parms[i] = (&prog->globals.server->parm1)[i];

		// set up the entity for this client (including .colormap, .team, etc)
		PRVM_ED_ClearEdict(client->edict);
	}

	// don't call SendServerinfo for a fresh botclient because its fields have
	// not been set up by the qc yet
	if (client->netconnection)
		SV_SendServerinfo (client);
	else
		client->spawned = true;
}


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

FRAME UPDATES

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

/*
==================
SV_ClearDatagram

==================
*/
void SV_ClearDatagram (void)
{
	SZ_Clear (&sv.datagram);
}

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

The PVS must include a small area around the client to allow head bobbing
or other small motion on the client side.  Otherwise, a bob might cause an
entity that should be visible to not show up, especially when the bob
crosses a waterline.

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

int sv_writeentitiestoclient_pvsbytes;
unsigned char sv_writeentitiestoclient_pvs[MAX_MAP_LEAFS/8];

static int numsendentities;
static entity_state_t sendentities[MAX_EDICTS];
static entity_state_t *sendentitiesindex[MAX_EDICTS];

qboolean SV_PrepareEntityForSending (prvm_edict_t *ent, entity_state_t *cs, int e)
{
	int i;
	unsigned int modelindex, effects, flags, glowsize, lightstyle, lightpflags, light[4], specialvisibilityradius;
	unsigned int customizeentityforclient;
	float f;
	vec3_t cullmins, cullmaxs;
	model_t *model;
	prvm_eval_t *val;

	// EF_NODRAW prevents sending for any reason except for your own
	// client, so we must keep all clients in this superset
	effects = (unsigned)ent->fields.server->effects;

	// we can omit invisible entities with no effects that are not clients
	// LordHavoc: this could kill tags attached to an invisible entity, I
	// just hope we never have to support that case
	i = (int)ent->fields.server->modelindex;
	modelindex = (i >= 1 && i < MAX_MODELS && *PRVM_GetString(ent->fields.server->model)) ? i : 0;

	flags = 0;
	i = (int)(PRVM_GETEDICTFIELDVALUE(ent, eval_glow_size)->_float * 0.25f);
	glowsize = (unsigned char)bound(0, i, 255);
	if (PRVM_GETEDICTFIELDVALUE(ent, eval_glow_trail)->_float)
		flags |= RENDER_GLOWTRAIL;

	f = PRVM_GETEDICTFIELDVALUE(ent, eval_color)->vector[0]*256;
	light[0] = (unsigned short)bound(0, f, 65535);
	f = PRVM_GETEDICTFIELDVALUE(ent, eval_color)->vector[1]*256;
	light[1] = (unsigned short)bound(0, f, 65535);
	f = PRVM_GETEDICTFIELDVALUE(ent, eval_color)->vector[2]*256;
	light[2] = (unsigned short)bound(0, f, 65535);
	f = PRVM_GETEDICTFIELDVALUE(ent, eval_light_lev)->_float;
	light[3] = (unsigned short)bound(0, f, 65535);
	lightstyle = (unsigned char)PRVM_GETEDICTFIELDVALUE(ent, eval_style)->_float;
	lightpflags = (unsigned char)PRVM_GETEDICTFIELDVALUE(ent, eval_pflags)->_float;

	if (gamemode == GAME_TENEBRAE)
	{
		// tenebrae's EF_FULLDYNAMIC conflicts with Q2's EF_NODRAW
		if (effects & 16)
		{
			effects &= ~16;
			lightpflags |= PFLAGS_FULLDYNAMIC;
		}
		// tenebrae's EF_GREEN conflicts with DP's EF_ADDITIVE
		if (effects & 32)
		{
			effects &= ~32;
			light[0] = (int)(0.2*256);
			light[1] = (int)(1.0*256);
			light[2] = (int)(0.2*256);
			light[3] = 200;
			lightpflags |= PFLAGS_FULLDYNAMIC;
		}
	}

	specialvisibilityradius = 0;
	if (lightpflags & PFLAGS_FULLDYNAMIC)
		specialvisibilityradius = max(specialvisibilityradius, light[3]);
	if (glowsize)
		specialvisibilityradius = max(specialvisibilityradius, glowsize * 4);
	if (flags & RENDER_GLOWTRAIL)
		specialvisibilityradius = max(specialvisibilityradius, 100);
	if (effects & (EF_BRIGHTFIELD | EF_MUZZLEFLASH | EF_BRIGHTLIGHT | EF_DIMLIGHT | EF_RED | EF_BLUE | EF_FLAME | EF_STARDUST))
	{
		if (effects & EF_BRIGHTFIELD)
			specialvisibilityradius = max(specialvisibilityradius, 80);
		if (effects & EF_MUZZLEFLASH)
			specialvisibilityradius = max(specialvisibilityradius, 100);
		if (effects & EF_BRIGHTLIGHT)
			specialvisibilityradius = max(specialvisibilityradius, 400);
		if (effects & EF_DIMLIGHT)
			specialvisibilityradius = max(specialvisibilityradius, 200);
		if (effects & EF_RED)
			specialvisibilityradius = max(specialvisibilityradius, 200);
		if (effects & EF_BLUE)
			specialvisibilityradius = max(specialvisibilityradius, 200);
		if (effects & EF_FLAME)
			specialvisibilityradius = max(specialvisibilityradius, 250);
		if (effects & EF_STARDUST)
			specialvisibilityradius = max(specialvisibilityradius, 100);
	}

	// early culling checks
	// (final culling is done by SV_MarkWriteEntityStateToClient)
	customizeentityforclient = PRVM_GETEDICTFIELDVALUE(ent, eval_customizeentityforclient)->function;
	if (!customizeentityforclient)
	{
		if (e > svs.maxclients && (!modelindex && !specialvisibilityradius))
			return false;
		// this 2 billion unit check is actually to detect NAN origins
		// (we really don't want to send those)
		if (VectorLength2(ent->fields.server->origin) > 2000000000.0*2000000000.0)
			return false;
	}


	*cs = defaultstate;
	cs->active = true;
	cs->number = e;
	VectorCopy(ent->fields.server->origin, cs->origin);
	VectorCopy(ent->fields.server->angles, cs->angles);
	cs->flags = flags;
	cs->effects = effects;
	cs->colormap = (unsigned)ent->fields.server->colormap;
	cs->modelindex = modelindex;
	cs->skin = (unsigned)ent->fields.server->skin;
	cs->frame = (unsigned)ent->fields.server->frame;
	cs->viewmodelforclient = PRVM_GETEDICTFIELDVALUE(ent, eval_viewmodelforclient)->edict;
	cs->exteriormodelforclient = PRVM_GETEDICTFIELDVALUE(ent, eval_exteriormodeltoclient)->edict;
	cs->nodrawtoclient = PRVM_GETEDICTFIELDVALUE(ent, eval_nodrawtoclient)->edict;
	cs->drawonlytoclient = PRVM_GETEDICTFIELDVALUE(ent, eval_drawonlytoclient)->edict;
	cs->customizeentityforclient = customizeentityforclient;
	cs->tagentity = PRVM_GETEDICTFIELDVALUE(ent, eval_tag_entity)->edict;
	cs->tagindex = (unsigned char)PRVM_GETEDICTFIELDVALUE(ent, eval_tag_index)->_float;
	cs->glowsize = glowsize;

	// don't need to init cs->colormod because the defaultstate did that for us
	//cs->colormod[0] = cs->colormod[1] = cs->colormod[2] = 32;
	val = PRVM_GETEDICTFIELDVALUE(ent, eval_colormod);
	if (val->vector[0] || val->vector[1] || val->vector[2])
	{
		i = (int)(val->vector[0] * 32.0f);cs->colormod[0] = bound(0, i, 255);
		i = (int)(val->vector[1] * 32.0f);cs->colormod[1] = bound(0, i, 255);
		i = (int)(val->vector[2] * 32.0f);cs->colormod[2] = bound(0, i, 255);
	}

	cs->modelindex = modelindex;

	cs->alpha = 255;
	f = (PRVM_GETEDICTFIELDVALUE(ent, eval_alpha)->_float * 255.0f);
	if (f)
	{
		i = (int)f;
		cs->alpha = (unsigned char)bound(0, i, 255);
	}
	// halflife
	f = (PRVM_GETEDICTFIELDVALUE(ent, eval_renderamt)->_float);
	if (f)
	{
		i = (int)f;
		cs->alpha = (unsigned char)bound(0, i, 255);
	}

	cs->scale = 16;
	f = (PRVM_GETEDICTFIELDVALUE(ent, eval_scale)->_float * 16.0f);
	if (f)
	{
		i = (int)f;
		cs->scale = (unsigned char)bound(0, i, 255);
	}

	cs->glowcolor = 254;
	f = (PRVM_GETEDICTFIELDVALUE(ent, eval_glow_color)->_float);
	if (f)
		cs->glowcolor = (int)f;

	if (PRVM_GETEDICTFIELDVALUE(ent, eval_fullbright)->_float)
		cs->effects |= EF_FULLBRIGHT;

	if (ent->fields.server->movetype == MOVETYPE_STEP)
		cs->flags |= RENDER_STEP;
	if ((cs->effects & EF_LOWPRECISION) && cs->origin[0] >= -32768 && cs->origin[1] >= -32768 && cs->origin[2] >= -32768 && cs->origin[0] <= 32767 && cs->origin[1] <= 32767 && cs->origin[2] <= 32767)
		cs->flags |= RENDER_LOWPRECISION;
	if (ent->fields.server->colormap >= 1024)
		cs->flags |= RENDER_COLORMAPPED;
	if (cs->viewmodelforclient)
		cs->flags |= RENDER_VIEWMODEL; // show relative to the view

	cs->light[0] = light[0];
	cs->light[1] = light[1];
	cs->light[2] = light[2];
	cs->light[3] = light[3];
	cs->lightstyle = lightstyle;
	cs->lightpflags = lightpflags;

	cs->specialvisibilityradius = specialvisibilityradius;

	// calculate the visible box of this entity (don't use the physics box
	// as that is often smaller than a model, and would not count
	// specialvisibilityradius)
	if ((model = sv.models[modelindex]))
	{
		float scale = cs->scale * (1.0f / 16.0f);
		if (cs->angles[0] || cs->angles[2]) // pitch and roll
		{
			VectorMA(cs->origin, scale, model->rotatedmins, cullmins);
			VectorMA(cs->origin, scale, model->rotatedmaxs, cullmaxs);
		}
		else if (cs->angles[1])
		{
			VectorMA(cs->origin, scale, model->yawmins, cullmins);
			VectorMA(cs->origin, scale, model->yawmaxs, cullmaxs);
		}
		else
		{
			VectorMA(cs->origin, scale, model->normalmins, cullmins);
			VectorMA(cs->origin, scale, model->normalmaxs, cullmaxs);
		}
	}
	else
	{
		// if there is no model (or it could not be loaded), use the physics box
		VectorAdd(cs->origin, ent->fields.server->mins, cullmins);
		VectorAdd(cs->origin, ent->fields.server->maxs, cullmaxs);
	}
	if (specialvisibilityradius)
	{
		cullmins[0] = min(cullmins[0], cs->origin[0] - specialvisibilityradius);
		cullmins[1] = min(cullmins[1], cs->origin[1] - specialvisibilityradius);
		cullmins[2] = min(cullmins[2], cs->origin[2] - specialvisibilityradius);
		cullmaxs[0] = max(cullmaxs[0], cs->origin[0] + specialvisibilityradius);
		cullmaxs[1] = max(cullmaxs[1], cs->origin[1] + specialvisibilityradius);
		cullmaxs[2] = max(cullmaxs[2], cs->origin[2] + specialvisibilityradius);
	}
	if (!VectorCompare(cullmins, ent->priv.server->cullmins) || !VectorCompare(cullmaxs, ent->priv.server->cullmaxs))
	{
		VectorCopy(cullmins, ent->priv.server->cullmins);
		VectorCopy(cullmaxs, ent->priv.server->cullmaxs);
		ent->priv.server->pvs_numclusters = -1;
		if (sv.worldmodel && sv.worldmodel->brush.FindBoxClusters)
		{
			i = sv.worldmodel->brush.FindBoxClusters(sv.worldmodel, cullmins, cullmaxs, MAX_ENTITYCLUSTERS, ent->priv.server->pvs_clusterlist);
			if (i <= MAX_ENTITYCLUSTERS)
				ent->priv.server->pvs_numclusters = i;
		}
	}

	return true;
}

void SV_PrepareEntitiesForSending(void)
{
	int e;
	prvm_edict_t *ent;
	// send all entities that touch the pvs
	numsendentities = 0;
	sendentitiesindex[0] = NULL;
	memset(sendentitiesindex, 0, prog->num_edicts * sizeof(entity_state_t *));
	for (e = 1, ent = PRVM_NEXT_EDICT(prog->edicts);e < prog->num_edicts;e++, ent = PRVM_NEXT_EDICT(ent))
	{
		if (!ent->priv.server->free && SV_PrepareEntityForSending(ent, sendentities + numsendentities, e))
		{
			sendentitiesindex[e] = sendentities + numsendentities;
			numsendentities++;
		}
	}
}

static int sententitiesmark = 0;
static int sententities[MAX_EDICTS];
static int sententitiesconsideration[MAX_EDICTS];
static int sv_writeentitiestoclient_culled_pvs;
static int sv_writeentitiestoclient_culled_trace;
static int sv_writeentitiestoclient_visibleentities;
static int sv_writeentitiestoclient_totalentities;
//static entity_frame_t sv_writeentitiestoclient_entityframe;
static int sv_writeentitiestoclient_clentnum;
static vec3_t sv_writeentitiestoclient_testeye;
static client_t *sv_writeentitiestoclient_client;

void SV_MarkWriteEntityStateToClient(entity_state_t *s)
{
	int isbmodel;
	vec3_t testorigin;
	model_t *model;
	prvm_edict_t *ed;
	trace_t trace;
	if (sententitiesconsideration[s->number] == sententitiesmark)
		return;
	sententitiesconsideration[s->number] = sententitiesmark;
	sv_writeentitiestoclient_totalentities++;

	if (s->customizeentityforclient)
	{
		prog->globals.server->self = s->number;
		prog->globals.server->other = sv_writeentitiestoclient_clentnum;
		PRVM_ExecuteProgram(s->customizeentityforclient, "customizeentityforclient: NULL function");
		if(!PRVM_G_FLOAT(OFS_RETURN) || !SV_PrepareEntityForSending(PRVM_EDICT_NUM(s->number), s, s->number))
			return;
	}

	// never reject player
	if (s->number != sv_writeentitiestoclient_clentnum)
	{
		// check various rejection conditions
		if (s->nodrawtoclient == sv_writeentitiestoclient_clentnum)
			return;
		if (s->drawonlytoclient && s->drawonlytoclient != sv_writeentitiestoclient_clentnum)
			return;
		if (s->effects & EF_NODRAW)
			return;
		// LordHavoc: only send entities with a model or important effects
		if (!s->modelindex && s->specialvisibilityradius == 0)
			return;

		// viewmodels don't have visibility checking
		if (s->viewmodelforclient)
		{
			if (s->viewmodelforclient != sv_writeentitiestoclient_clentnum)
				return;
		}
		else if (s->tagentity)
		{
			// tag attached entities simply check their parent
			if (!sendentitiesindex[s->tagentity])
				return;
			SV_MarkWriteEntityStateToClient(sendentitiesindex[s->tagentity]);
			if (sententities[s->tagentity] != sententitiesmark)
				return;
		}
		// always send world submodels in newer protocols because they don't
		// generate much traffic (in old protocols they hog bandwidth)
		else if (!(s->effects & EF_NODEPTHTEST) && !((isbmodel = (model = sv.models[s->modelindex]) != NULL && model->name[0] == '*') && (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE)))
		{
			// entity has survived every check so far, check if visible
			ed = PRVM_EDICT_NUM(s->number);

			// if not touching a visible leaf
			if (sv_cullentities_pvs.integer && sv_writeentitiestoclient_pvsbytes)
			{
				if (ed->priv.server->pvs_numclusters < 0)
				{
					// entity too big for clusters list
					if (sv.worldmodel && sv.worldmodel->brush.BoxTouchingPVS && !sv.worldmodel->brush.BoxTouchingPVS(sv.worldmodel, sv_writeentitiestoclient_pvs, ed->priv.server->cullmins, ed->priv.server->cullmaxs))
					{
						sv_writeentitiestoclient_culled_pvs++;
						return;
					}
				}
				else
				{
					int i;
					// check cached clusters list
					for (i = 0;i < ed->priv.server->pvs_numclusters;i++)
						if (CHECKPVSBIT(sv_writeentitiestoclient_pvs, ed->priv.server->pvs_clusterlist[i]))
							break;
					if (i == ed->priv.server->pvs_numclusters)
					{
						sv_writeentitiestoclient_culled_pvs++;
						return;
					}
				}
			}

			// or not seen by random tracelines
			if (sv_cullentities_trace.integer && !isbmodel)
			{
				// LordHavoc: test center first
				testorigin[0] = (ed->priv.server->cullmins[0] + ed->priv.server->cullmaxs[0]) * 0.5f;
				testorigin[1] = (ed->priv.server->cullmins[1] + ed->priv.server->cullmaxs[1]) * 0.5f;
				testorigin[2] = (ed->priv.server->cullmins[2] + ed->priv.server->cullmaxs[2]) * 0.5f;
				sv.worldmodel->TraceBox(sv.worldmodel, 0, &trace, sv_writeentitiestoclient_testeye, vec3_origin, vec3_origin, testorigin, SUPERCONTENTS_SOLID);
				if (trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, ed->priv.server->cullmins, ed->priv.server->cullmaxs))
					sv_writeentitiestoclient_client->visibletime[s->number] = realtime + 1;
				else
				{
					// LordHavoc: test random offsets, to maximize chance of detection
					testorigin[0] = lhrandom(ed->priv.server->cullmins[0], ed->priv.server->cullmaxs[0]);
					testorigin[1] = lhrandom(ed->priv.server->cullmins[1], ed->priv.server->cullmaxs[1]);
					testorigin[2] = lhrandom(ed->priv.server->cullmins[2], ed->priv.server->cullmaxs[2]);
					sv.worldmodel->TraceBox(sv.worldmodel, 0, &trace, sv_writeentitiestoclient_testeye, vec3_origin, vec3_origin, testorigin, SUPERCONTENTS_SOLID);
					if (trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, ed->priv.server->cullmins, ed->priv.server->cullmaxs))
						sv_writeentitiestoclient_client->visibletime[s->number] = realtime + 1;
					else
					{
						if (s->specialvisibilityradius)
						{
							// LordHavoc: test random offsets, to maximize chance of detection
							testorigin[0] = lhrandom(ed->priv.server->cullmins[0], ed->priv.server->cullmaxs[0]);
							testorigin[1] = lhrandom(ed->priv.server->cullmins[1], ed->priv.server->cullmaxs[1]);
							testorigin[2] = lhrandom(ed->priv.server->cullmins[2], ed->priv.server->cullmaxs[2]);
							sv.worldmodel->TraceBox(sv.worldmodel, 0, &trace, sv_writeentitiestoclient_testeye, vec3_origin, vec3_origin, testorigin, SUPERCONTENTS_SOLID);
							if (trace.fraction == 1 || BoxesOverlap(trace.endpos, trace.endpos, ed->priv.server->cullmins, ed->priv.server->cullmaxs))
								sv_writeentitiestoclient_client->visibletime[s->number] = realtime + 1;
						}
					}
				}
				if (realtime > sv_writeentitiestoclient_client->visibletime[s->number])
				{
					sv_writeentitiestoclient_culled_trace++;
					return;
				}
			}
		}
	}

	// this just marks it for sending
	// FIXME: it would be more efficient to send here, but the entity
	// compressor isn't that flexible
	sv_writeentitiestoclient_visibleentities++;
	sententities[s->number] = sententitiesmark;
}

entity_state_t sendstates[MAX_EDICTS];
extern int csqc_clent;

void SV_WriteEntitiesToClient(client_t *client, prvm_edict_t *clent, sizebuf_t *msg, int *stats)
{
	int i, numsendstates;
	entity_state_t *s;

	// if there isn't enough space to accomplish anything, skip it
	if (msg->cursize + 25 > msg->maxsize)
		return;

	sv_writeentitiestoclient_client = client;

	sv_writeentitiestoclient_culled_pvs = 0;
	sv_writeentitiestoclient_culled_trace = 0;
	sv_writeentitiestoclient_visibleentities = 0;
	sv_writeentitiestoclient_totalentities = 0;

// find the client's PVS
	// the real place being tested from
	VectorAdd(clent->fields.server->origin, clent->fields.server->view_ofs, sv_writeentitiestoclient_testeye);
	sv_writeentitiestoclient_pvsbytes = 0;
	if (sv.worldmodel && sv.worldmodel->brush.FatPVS)
		sv_writeentitiestoclient_pvsbytes = sv.worldmodel->brush.FatPVS(sv.worldmodel, sv_writeentitiestoclient_testeye, 8, sv_writeentitiestoclient_pvs, sizeof(sv_writeentitiestoclient_pvs));

	csqc_clent = sv_writeentitiestoclient_clentnum = PRVM_EDICT_TO_PROG(clent); // LordHavoc: for comparison purposes

	sententitiesmark++;

	for (i = 0;i < numsendentities;i++)
		SV_MarkWriteEntityStateToClient(sendentities + i);

	numsendstates = 0;
	for (i = 0;i < numsendentities;i++)
	{
		if (sententities[sendentities[i].number] == sententitiesmark)
		{
			s = &sendstates[numsendstates++];
			*s = sendentities[i];
			if (s->exteriormodelforclient && s->exteriormodelforclient == sv_writeentitiestoclient_clentnum)
				s->flags |= RENDER_EXTERIORMODEL;
		}
	}

	if (sv_cullentities_stats.integer)
		Con_Printf("client \"%s\" entities: %d total, %d visible, %d culled by: %d pvs %d trace\n", client->name, sv_writeentitiestoclient_totalentities, sv_writeentitiestoclient_visibleentities, sv_writeentitiestoclient_culled_pvs + sv_writeentitiestoclient_culled_trace, sv_writeentitiestoclient_culled_pvs, sv_writeentitiestoclient_culled_trace);

	EntityFrameCSQC_WriteFrame(msg, numsendstates, sendstates);

	if (client->entitydatabase5)
		EntityFrame5_WriteFrame(msg, client->entitydatabase5, numsendstates, sendstates, client - svs.clients + 1, stats, client->movesequence);
	else if (client->entitydatabase4)
		EntityFrame4_WriteFrame(msg, client->entitydatabase4, numsendstates, sendstates);
	else if (client->entitydatabase)
		EntityFrame_WriteFrame(msg, client->entitydatabase, numsendstates, sendstates, client - svs.clients + 1);
	else
		EntityFrameQuake_WriteFrame(msg, numsendstates, sendstates);
}

/*
=============
SV_CleanupEnts

=============
*/
void SV_CleanupEnts (void)
{
	int		e;
	prvm_edict_t	*ent;

	ent = PRVM_NEXT_EDICT(prog->edicts);
	for (e=1 ; e<prog->num_edicts ; e++, ent = PRVM_NEXT_EDICT(ent))
		ent->fields.server->effects = (int)ent->fields.server->effects & ~EF_MUZZLEFLASH;
}

/*
==================
SV_WriteClientdataToMessage

==================
*/
void SV_WriteClientdataToMessage (client_t *client, prvm_edict_t *ent, sizebuf_t *msg, int *stats)
{
	int		bits;
	int		i;
	prvm_edict_t	*other;
	int		items;
	prvm_eval_t	*val;
	vec3_t	punchvector;
	int		viewzoom;
	const char *s;

//
// send a damage message
//
	if (ent->fields.server->dmg_take || ent->fields.server->dmg_save)
	{
		other = PRVM_PROG_TO_EDICT(ent->fields.server->dmg_inflictor);
		MSG_WriteByte (msg, svc_damage);
		MSG_WriteByte (msg, (int)ent->fields.server->dmg_save);
		MSG_WriteByte (msg, (int)ent->fields.server->dmg_take);
		for (i=0 ; i<3 ; i++)
			MSG_WriteCoord (msg, other->fields.server->origin[i] + 0.5*(other->fields.server->mins[i] + other->fields.server->maxs[i]), sv.protocol);

		ent->fields.server->dmg_take = 0;
		ent->fields.server->dmg_save = 0;
	}

//
// send the current viewpos offset from the view entity
//
	SV_SetIdealPitch ();		// how much to look up / down ideally

// a fixangle might get lost in a dropped packet.  Oh well.
	if ( ent->fields.server->fixangle )
	{
		MSG_WriteByte (msg, svc_setangle);
		for (i=0 ; i < 3 ; i++)
			MSG_WriteAngle (msg, ent->fields.server->angles[i], sv.protocol);
		ent->fields.server->fixangle = 0;
	}

	// stuff the sigil bits into the high bits of items for sbar, or else
	// mix in items2
	val = PRVM_GETEDICTFIELDVALUE(ent, eval_items2);
	if (gamemode == GAME_HIPNOTIC || gamemode == GAME_ROGUE)
		items = (int)ent->fields.server->items | ((int)val->_float << 23);
	else
		items = (int)ent->fields.server->items | ((int)prog->globals.server->serverflags << 28);

	VectorClear(punchvector);
	if ((val = PRVM_GETEDICTFIELDVALUE(ent, eval_punchvector)))
		VectorCopy(val->vector, punchvector);

	// cache weapon model name and index in client struct to save time
	// (this search can be almost 1% of cpu time!)
	s = PRVM_GetString(ent->fields.server->weaponmodel);
	if (strcmp(s, client->weaponmodel))
	{
		strlcpy(client->weaponmodel, s, sizeof(client->weaponmodel));
		client->weaponmodelindex = SV_ModelIndex(s, 1);
	}

	viewzoom = 255;
	if ((val = PRVM_GETEDICTFIELDVALUE(ent, eval_viewzoom)))
		viewzoom = (int)(val->_float * 255.0f);
	if (viewzoom == 0)
		viewzoom = 255;

	bits = 0;

	if ((int)ent->fields.server->flags & FL_ONGROUND)
		bits |= SU_ONGROUND;
	if (ent->fields.server->waterlevel >= 2)
		bits |= SU_INWATER;
	if (ent->fields.server->idealpitch)
		bits |= SU_IDEALPITCH;

	for (i=0 ; i<3 ; i++)
	{
		if (ent->fields.server->punchangle[i])
			bits |= (SU_PUNCH1<<i);
		if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE)
			if (punchvector[i])
				bits |= (SU_PUNCHVEC1<<i);
		if (ent->fields.server->velocity[i])
			bits |= (SU_VELOCITY1<<i);
	}

	memset(stats, 0, sizeof(int[MAX_CL_STATS]));
	stats[STAT_VIEWHEIGHT] = (int)ent->fields.server->view_ofs[2];
	stats[STAT_ITEMS] = items;
	stats[STAT_WEAPONFRAME] = (int)ent->fields.server->weaponframe;
	stats[STAT_ARMOR] = (int)ent->fields.server->armorvalue;
	stats[STAT_WEAPON] = client->weaponmodelindex;
	stats[STAT_HEALTH] = (int)ent->fields.server->health;
	stats[STAT_AMMO] = (int)ent->fields.server->currentammo;
	stats[STAT_SHELLS] = (int)ent->fields.server->ammo_shells;
	stats[STAT_NAILS] = (int)ent->fields.server->ammo_nails;
	stats[STAT_ROCKETS] = (int)ent->fields.server->ammo_rockets;
	stats[STAT_CELLS] = (int)ent->fields.server->ammo_cells;
	stats[STAT_ACTIVEWEAPON] = (int)ent->fields.server->weapon;
	stats[STAT_VIEWZOOM] = viewzoom;
	// the QC bumps these itself by sending svc_'s, so we have to keep them
	// zero or they'll be corrected by the engine
	//stats[STAT_TOTALSECRETS] = prog->globals.server->total_secrets;
	//stats[STAT_TOTALMONSTERS] = prog->globals.server->total_monsters;
	//stats[STAT_SECRETS] = prog->globals.server->found_secrets;
	//stats[STAT_MONSTERS] = prog->globals.server->killed_monsters;

	if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5)
	{
		if (stats[STAT_VIEWHEIGHT] != DEFAULT_VIEWHEIGHT) bits |= SU_VIEWHEIGHT;
		bits |= SU_ITEMS;
		if (stats[STAT_WEAPONFRAME]) bits |= SU_WEAPONFRAME;
		if (stats[STAT_ARMOR]) bits |= SU_ARMOR;
		bits |= SU_WEAPON;
		// FIXME: which protocols support this?  does PROTOCOL_DARKPLACES3 support viewzoom?
		if (sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5)
			if (viewzoom != 255)
				bits |= SU_VIEWZOOM;
	}

	if (bits >= 65536)
		bits |= SU_EXTEND1;
	if (bits >= 16777216)
		bits |= SU_EXTEND2;

	// send the data
	MSG_WriteByte (msg, svc_clientdata);
	MSG_WriteShort (msg, bits);
	if (bits & SU_EXTEND1)
		MSG_WriteByte(msg, bits >> 16);
	if (bits & SU_EXTEND2)
		MSG_WriteByte(msg, bits >> 24);

	if (bits & SU_VIEWHEIGHT)
		MSG_WriteChar (msg, stats[STAT_VIEWHEIGHT]);

	if (bits & SU_IDEALPITCH)
		MSG_WriteChar (msg, (int)ent->fields.server->idealpitch);

	for (i=0 ; i<3 ; i++)
	{
		if (bits & (SU_PUNCH1<<i))
		{
			if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE)
				MSG_WriteChar(msg, (int)ent->fields.server->punchangle[i]);
			else
				MSG_WriteAngle16i(msg, ent->fields.server->punchangle[i]);
		}
		if (bits & (SU_PUNCHVEC1<<i))
		{
			if (sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4)
				MSG_WriteCoord16i(msg, punchvector[i]);
			else
				MSG_WriteCoord32f(msg, punchvector[i]);
		}
		if (bits & (SU_VELOCITY1<<i))
		{
			if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4)
				MSG_WriteChar(msg, (int)(ent->fields.server->velocity[i] * (1.0f / 16.0f)));
			else
				MSG_WriteCoord32f(msg, ent->fields.server->velocity[i]);
		}
	}

	if (bits & SU_ITEMS)
		MSG_WriteLong (msg, stats[STAT_ITEMS]);

	if (sv.protocol == PROTOCOL_DARKPLACES5)
	{
		if (bits & SU_WEAPONFRAME)
			MSG_WriteShort (msg, stats[STAT_WEAPONFRAME]);
		if (bits & SU_ARMOR)
			MSG_WriteShort (msg, stats[STAT_ARMOR]);
		if (bits & SU_WEAPON)
			MSG_WriteShort (msg, stats[STAT_WEAPON]);
		MSG_WriteShort (msg, stats[STAT_HEALTH]);
		MSG_WriteShort (msg, stats[STAT_AMMO]);
		MSG_WriteShort (msg, stats[STAT_SHELLS]);
		MSG_WriteShort (msg, stats[STAT_NAILS]);
		MSG_WriteShort (msg, stats[STAT_ROCKETS]);
		MSG_WriteShort (msg, stats[STAT_CELLS]);
		MSG_WriteShort (msg, stats[STAT_ACTIVEWEAPON]);
		if (bits & SU_VIEWZOOM)
			MSG_WriteShort (msg, bound(0, stats[STAT_VIEWZOOM], 65535));
	}
	else if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4)
	{
		if (bits & SU_WEAPONFRAME)
			MSG_WriteByte (msg, stats[STAT_WEAPONFRAME]);
		if (bits & SU_ARMOR)
			MSG_WriteByte (msg, stats[STAT_ARMOR]);
		if (bits & SU_WEAPON)
			MSG_WriteByte (msg, stats[STAT_WEAPON]);
		MSG_WriteShort (msg, stats[STAT_HEALTH]);
		MSG_WriteByte (msg, stats[STAT_AMMO]);
		MSG_WriteByte (msg, stats[STAT_SHELLS]);
		MSG_WriteByte (msg, stats[STAT_NAILS]);
		MSG_WriteByte (msg, stats[STAT_ROCKETS]);
		MSG_WriteByte (msg, stats[STAT_CELLS]);
		if (gamemode == GAME_HIPNOTIC || gamemode == GAME_ROGUE || gamemode == GAME_NEXUIZ)
		{
			for (i = 0;i < 32;i++)
				if (stats[STAT_WEAPON] & (1<<i))
					break;
			MSG_WriteByte (msg, i);
		}
		else
			MSG_WriteByte (msg, stats[STAT_WEAPON]);
		if (bits & SU_VIEWZOOM)
		{
			if (sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4)
				MSG_WriteByte (msg, bound(0, stats[STAT_VIEWZOOM], 255));
			else
				MSG_WriteShort (msg, bound(0, stats[STAT_VIEWZOOM], 65535));
		}
	}
}

/*
=======================
SV_SendClientDatagram
=======================
*/
static unsigned char sv_sendclientdatagram_buf[NET_MAXMESSAGE]; // FIXME?
void SV_SendClientDatagram (client_t *client)
{
	int rate, maxrate, maxsize, maxsize2;
	sizebuf_t msg;
	int stats[MAX_CL_STATS];

	if (LHNETADDRESS_GetAddressType(&host_client->netconnection->peeraddress) == LHNETADDRESSTYPE_LOOP && !sv_ratelimitlocalplayer.integer)
	{
		// for good singleplayer, send huge packets
		maxsize = sizeof(sv_sendclientdatagram_buf);
		maxsize2 = sizeof(sv_sendclientdatagram_buf);
	}
	else if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4)
	{
		// no rate limiting support on older protocols because dp protocols
		// 1-4 kick the client off if they overflow, and quake protocol shows
		// less than the full entity set if rate limited
		maxsize = 1400;
		maxsize2 = 1400;
	}
	else
	{
		// PROTOCOL_DARKPLACES5 and later support packet size limiting of updates
		maxrate = max(NET_MINRATE, sv_maxrate.integer);
		if (sv_maxrate.integer != maxrate)
			Cvar_SetValueQuick(&sv_maxrate, maxrate);

		// this rate limiting does not understand sys_ticrate 0
		// (but no one should be running that on a server!)
		rate = bound(NET_MINRATE, client->rate, maxrate);
		rate = (int)(rate * sys_ticrate.value);
		maxsize = bound(100, rate, 1400);
		maxsize2 = 1400;
	}

	msg.data = sv_sendclientdatagram_buf;
	msg.maxsize = maxsize;
	msg.cursize = 0;

	if (host_client->spawned)
	{
		MSG_WriteByte (&msg, svc_time);
		MSG_WriteFloat (&msg, sv.time);

		// add the client specific data to the datagram
		SV_WriteClientdataToMessage (client, client->edict, &msg, stats);
		VM_SV_WriteAutoSentStats (client, client->edict, &msg, stats);
		SV_WriteEntitiesToClient (client, client->edict, &msg, stats);

		// expand packet size to allow effects to go over the rate limit
		// (dropping them is FAR too ugly)
		msg.maxsize = maxsize2;

		// copy the server datagram if there is space
		// FIXME: put in delayed queue of effects to send
		if (sv.datagram.cursize > 0 && msg.cursize + sv.datagram.cursize <= msg.maxsize)
			SZ_Write (&msg, sv.datagram.data, sv.datagram.cursize);
	}
	else if (realtime > client->keepalivetime)
	{
		// the player isn't totally in the game yet
		// send small keepalive messages if too much time has passed
		client->keepalivetime = realtime + 5;
		MSG_WriteChar (&msg, svc_nop);
	}

// send the datagram
	NetConn_SendUnreliableMessage (client->netconnection, &msg, sv.protocol);
}

/*
=======================
SV_UpdateToReliableMessages
=======================
*/
void SV_UpdateToReliableMessages (void)
{
	int i, j;
	client_t *client;
	prvm_eval_t *val;
	const char *name;
	const char *model;
	const char *skin;

// check for changes to be sent over the reliable streams
	for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
	{
		// update the host_client fields we care about according to the entity fields
		host_client->edict = PRVM_EDICT_NUM(i+1);

		// DP_SV_CLIENTNAME
		name = PRVM_GetString(host_client->edict->fields.server->netname);
		if (name == NULL)
			name = "";
		// always point the string back at host_client->name to keep it safe
		strlcpy (host_client->name, name, sizeof (host_client->name));
		host_client->edict->fields.server->netname = PRVM_SetEngineString(host_client->name);
		if (strcmp(host_client->old_name, host_client->name))
		{
			if (host_client->spawned)
				SV_BroadcastPrintf("%s changed name to %s\n", host_client->old_name, host_client->name);
			strlcpy(host_client->old_name, host_client->name, sizeof(host_client->old_name));
			// send notification to all clients
			MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
			MSG_WriteByte (&sv.reliable_datagram, i);
			MSG_WriteString (&sv.reliable_datagram, host_client->name);
		}

		// DP_SV_CLIENTCOLORS
		// this is always found (since it's added by the progs loader)
		if ((val = PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_clientcolors)))
			host_client->colors = (int)val->_float;
		if (host_client->old_colors != host_client->colors)
		{
			host_client->old_colors = host_client->colors;
			// send notification to all clients
			MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
			MSG_WriteByte (&sv.reliable_datagram, i);
			MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
		}

		// NEXUIZ_PLAYERMODEL
		if( eval_playermodel ) {
			model = PRVM_GetString(PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_playermodel)->string);
			if (model == NULL)
				model = "";
			// always point the string back at host_client->name to keep it safe
			strlcpy (host_client->playermodel, model, sizeof (host_client->playermodel));
			PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_playermodel)->string = PRVM_SetEngineString(host_client->playermodel);
		}

		// NEXUIZ_PLAYERSKIN
		if( eval_playerskin ) {
			skin = PRVM_GetString(PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_playerskin)->string);
			if (skin == NULL)
				skin = "";
			// always point the string back at host_client->name to keep it safe
			strlcpy (host_client->playerskin, skin, sizeof (host_client->playerskin));
			PRVM_GETEDICTFIELDVALUE(host_client->edict, eval_playerskin)->string = PRVM_SetEngineString(host_client->playerskin);
		}

		// frags
		host_client->frags = (int)host_client->edict->fields.server->frags;
		if (host_client->old_frags != host_client->frags)
		{
			host_client->old_frags = host_client->frags;
			// send notification to all clients
			MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
			MSG_WriteByte (&sv.reliable_datagram, i);
			MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
		}
	}

	for (j = 0, client = svs.clients;j < svs.maxclients;j++, client++)
		if (client->netconnection)
			SZ_Write (&client->netconnection->message, sv.reliable_datagram.data, sv.reliable_datagram.cursize);

	SZ_Clear (&sv.reliable_datagram);
}


/*
=======================
SV_SendClientMessages
=======================
*/
void SV_SendClientMessages (void)
{
	int i, prepared = false;

	if (sv.protocol == PROTOCOL_QUAKEWORLD)
		Sys_Error("SV_SendClientMessages: no quakeworld support\n");

// update frags, names, etc
	SV_UpdateToReliableMessages();

// build individual updates
	for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
	{
		if (!host_client->active)
			continue;
		if (!host_client->netconnection)
			continue;

		if (host_client->netconnection->message.overflowed)
		{
			SV_DropClient (true);	// if the message couldn't send, kick off
			continue;
		}

		if (!prepared)
		{
			prepared = true;
			// only prepare entities once per frame
			SV_PrepareEntitiesForSending();
		}
		SV_SendClientDatagram (host_client);
	}

// clear muzzle flashes
	SV_CleanupEnts();
}


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

SERVER SPAWNING

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

/*
================
SV_ModelIndex

================
*/
int SV_ModelIndex(const char *s, int precachemode)
{
	int i, limit = ((sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE) ? 256 : MAX_MODELS);
	char filename[MAX_QPATH];
	if (!s || !*s)
		return 0;
	// testing
	//if (precachemode == 2)
	//	return 0;
	strlcpy(filename, s, sizeof(filename));
	for (i = 2;i < limit;i++)
	{
		if (!sv.model_precache[i][0])
		{
			if (precachemode)
			{
				if (sv.state != ss_loading && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5))
				{
					Con_Printf("SV_ModelIndex(\"%s\"): precache_model can only be done in spawn functions\n", filename);
					return 0;
				}
				if (precachemode == 1)
					Con_Printf("SV_ModelIndex(\"%s\"): not precached (fix your code), precaching anyway\n", filename);
				strlcpy(sv.model_precache[i], filename, sizeof(sv.model_precache[i]));
				sv.models[i] = Mod_ForName (sv.model_precache[i], true, false, false);
				if (sv.state != ss_loading)
				{
					MSG_WriteByte(&sv.reliable_datagram, svc_precache);
					MSG_WriteShort(&sv.reliable_datagram, i);
					MSG_WriteString(&sv.reliable_datagram, filename);
				}
				return i;
			}
			Con_Printf("SV_ModelIndex(\"%s\"): not precached\n", filename);
			return 0;
		}
		if (!strcmp(sv.model_precache[i], filename))
			return i;
	}
	Con_Printf("SV_ModelIndex(\"%s\"): i (%i) == MAX_MODELS (%i)\n", filename, i, MAX_MODELS);
	return 0;
}

/*
================
SV_SoundIndex

================
*/
int SV_SoundIndex(const char *s, int precachemode)
{
	int i, limit = ((sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE) ? 256 : MAX_SOUNDS);
	char filename[MAX_QPATH];
	if (!s || !*s)
		return 0;
	// testing
	//if (precachemode == 2)
	//	return 0;
	strlcpy(filename, s, sizeof(filename));
	for (i = 1;i < limit;i++)
	{
		if (!sv.sound_precache[i][0])
		{
			if (precachemode)
			{
				if (sv.state != ss_loading && (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE || sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES2 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5))
				{
					Con_Printf("SV_SoundIndex(\"%s\"): precache_sound can only be done in spawn functions\n", filename);
					return 0;
				}
				if (precachemode == 1)
					Con_Printf("SV_SoundIndex(\"%s\"): not precached (fix your code), precaching anyway\n", filename);
				strlcpy(sv.sound_precache[i], filename, sizeof(sv.sound_precache[i]));
				if (sv.state != ss_loading)
				{
					MSG_WriteByte(&sv.reliable_datagram, svc_precache);
					MSG_WriteShort(&sv.reliable_datagram, i + 32768);
					MSG_WriteString(&sv.reliable_datagram, filename);
				}
				return i;
			}
			Con_Printf("SV_SoundIndex(\"%s\"): not precached\n", filename);
			return 0;
		}
		if (!strcmp(sv.sound_precache[i], filename))
			return i;
	}
	Con_Printf("SV_SoundIndex(\"%s\"): i (%i) == MAX_SOUNDS (%i)\n", filename, i, MAX_SOUNDS);
	return 0;
}

/*
================
SV_CreateBaseline

================
*/
void SV_CreateBaseline (void)
{
	int i, entnum, large;
	prvm_edict_t *svent;

	// LordHavoc: clear *all* states (note just active ones)
	for (entnum = 0;entnum < prog->max_edicts;entnum++)
	{
		// get the current server version
		svent = PRVM_EDICT_NUM(entnum);

		// LordHavoc: always clear state values, whether the entity is in use or not
		svent->priv.server->baseline = defaultstate;

		if (svent->priv.server->free)
			continue;
		if (entnum > svs.maxclients && !svent->fields.server->modelindex)
			continue;

		// create entity baseline
		VectorCopy (svent->fields.server->origin, svent->priv.server->baseline.origin);
		VectorCopy (svent->fields.server->angles, svent->priv.server->baseline.angles);
		svent->priv.server->baseline.frame = (int)svent->fields.server->frame;
		svent->priv.server->baseline.skin = (int)svent->fields.server->skin;
		if (entnum > 0 && entnum <= svs.maxclients)
		{
			svent->priv.server->baseline.colormap = entnum;
			svent->priv.server->baseline.modelindex = SV_ModelIndex("progs/player.mdl", 1);
		}
		else
		{
			svent->priv.server->baseline.colormap = 0;
			svent->priv.server->baseline.modelindex = (int)svent->fields.server->modelindex;
		}

		large = false;
		if (svent->priv.server->baseline.modelindex & 0xFF00 || svent->priv.server->baseline.frame & 0xFF00)
			large = true;

		// add to the message
		if (large)
			MSG_WriteByte (&sv.signon, svc_spawnbaseline2);
		else
			MSG_WriteByte (&sv.signon, svc_spawnbaseline);
		MSG_WriteShort (&sv.signon, entnum);

		if (large)
		{
			MSG_WriteShort (&sv.signon, svent->priv.server->baseline.modelindex);
			MSG_WriteShort (&sv.signon, svent->priv.server->baseline.frame);
		}
		else
		{
			MSG_WriteByte (&sv.signon, svent->priv.server->baseline.modelindex);
			MSG_WriteByte (&sv.signon, svent->priv.server->baseline.frame);
		}
		MSG_WriteByte (&sv.signon, svent->priv.server->baseline.colormap);
		MSG_WriteByte (&sv.signon, svent->priv.server->baseline.skin);
		for (i=0 ; i<3 ; i++)
		{
			MSG_WriteCoord(&sv.signon, svent->priv.server->baseline.origin[i], sv.protocol);
			MSG_WriteAngle(&sv.signon, svent->priv.server->baseline.angles[i], sv.protocol);
		}
	}
}


/*
================
SV_SaveSpawnparms

Grabs the current state of each client for saving across the
transition to another level
================
*/
void SV_SaveSpawnparms (void)
{
	int		i, j;

	svs.serverflags = (int)prog->globals.server->serverflags;

	for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
	{
		if (!host_client->active)
			continue;

	// call the progs to get default spawn parms for the new client
		prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
		PRVM_ExecuteProgram (prog->globals.server->SetChangeParms, "QC function SetChangeParms is missing");
		for (j=0 ; j<NUM_SPAWN_PARMS ; j++)
			host_client->spawn_parms[j] = (&prog->globals.server->parm1)[j];
	}
}
/*
void SV_IncreaseEdicts(void)
{
	int i;
	prvm_edict_t *ent;
	int oldmax_edicts = prog->max_edicts;
	void *oldedictsengineprivate = prog->edictprivate;
	void *oldedictsfields = prog->edictsfields;
	void *oldmoved_edicts = sv.moved_edicts;

	if (prog->max_edicts >= MAX_EDICTS)
		return;

	// links don't survive the transition, so unlink everything
	for (i = 0, ent = prog->edicts;i < prog->max_edicts;i++, ent++)
	{
		if (!ent->priv.server->free)
			SV_UnlinkEdict(prog->edicts + i);
		memset(&ent->priv.server->areagrid, 0, sizeof(ent->priv.server->areagrid));
	}
	SV_ClearWorld();

	prog->max_edicts   = min(prog->max_edicts + 256, MAX_EDICTS);
	prog->edictprivate = PR_Alloc(prog->max_edicts * sizeof(edict_engineprivate_t));
	prog->edictsfields = PR_Alloc(prog->max_edicts * prog->edict_size);
	sv.moved_edicts = PR_Alloc(prog->max_edicts * sizeof(prvm_edict_t *));

	memcpy(prog->edictprivate, oldedictsengineprivate, oldmax_edicts * sizeof(edict_engineprivate_t));
	memcpy(prog->edictsfields, oldedictsfields, oldmax_edicts * prog->edict_size);

	for (i = 0, ent = prog->edicts;i < prog->max_edicts;i++, ent++)
	{
		ent->priv.vp = (unsigned char*) prog->edictprivate + i * prog->edictprivate_size;
		ent->fields.server = (void *)((unsigned char *)prog->edictsfields + i * prog->edict_size);
		// link every entity except world
		if (!ent->priv.server->free)
			SV_LinkEdict(ent, false);
	}

	PR_Free(oldedictsengineprivate);
	PR_Free(oldedictsfields);
	PR_Free(oldmoved_edicts);
}*/

/*
================
SV_SpawnServer

This is called at the start of each level
================
*/
extern float		scr_centertime_off;

void SV_SpawnServer (const char *server)
{
	prvm_edict_t *ent;
	int i;
	char *entities;
	model_t *worldmodel;
	char modelname[sizeof(sv.modelname)];

	Con_DPrintf("SpawnServer: %s\n", server);

	if (cls.state != ca_dedicated)
		SCR_BeginLoadingPlaque();

	dpsnprintf (modelname, sizeof(modelname), "maps/%s.bsp", server);
	worldmodel = Mod_ForName(modelname, false, true, true);
	if (!worldmodel || !worldmodel->TraceBox)
	{
		Con_Printf("Couldn't load map %s\n", modelname);
		return;
	}

	// let's not have any servers with no name
	if (hostname.string[0] == 0)
		Cvar_Set ("hostname", "UNNAMED");
	scr_centertime_off = 0;

	svs.changelevel_issued = false;		// now safe to issue another

	// make the map a required file for clients
	Curl_ClearRequirements();
	Curl_RequireFile(modelname);

//
// tell all connected clients that we are going to a new level
//
	if (sv.active)
	{
		client_t *client;
		for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
		{
			if (client->netconnection)
			{
				MSG_WriteByte(&client->netconnection->message, svc_stufftext);
				MSG_WriteString(&client->netconnection->message, "reconnect\n");
			}
		}
	}
	else
	{
		// open server port
		NetConn_OpenServerPorts(true);
	}

//
// make cvars consistant
//
	if (coop.integer)
		Cvar_SetValue ("deathmatch", 0);
	// LordHavoc: it can be useful to have skills outside the range 0-3...
	//current_skill = bound(0, (int)(skill.value + 0.5), 3);
	//Cvar_SetValue ("skill", (float)current_skill);
	current_skill = (int)(skill.value + 0.5);

//
// set up the new server
//
	memset (&sv, 0, sizeof(sv));
	// if running a local client, make sure it doesn't try to access the last
	// level's data which is no longer valiud
	cls.signon = 0;

	SV_VM_Setup();

	sv.active = true;

	strlcpy (sv.name, server, sizeof (sv.name));

	sv.protocol = Protocol_EnumForName(sv_protocolname.string);
	if (sv.protocol == PROTOCOL_UNKNOWN)
	{
		char buffer[1024];
		Protocol_Names(buffer, sizeof(buffer));
		Con_Printf("Unknown sv_protocolname \"%s\", valid values are:\n%s\n", sv_protocolname.string, buffer);
		sv.protocol = PROTOCOL_QUAKE;
	}

	SV_VM_Begin();

// load progs to get entity field count
	//PR_LoadProgs ( sv_progs.string );

	// allocate server memory
	/*// start out with just enough room for clients and a reasonable estimate of entities
	prog->max_edicts = max(svs.maxclients + 1, 512);
	prog->max_edicts = min(prog->max_edicts, MAX_EDICTS);

	// prvm_edict_t structures (hidden from progs)
	prog->edicts = PR_Alloc(MAX_EDICTS * sizeof(prvm_edict_t));
	// engine private structures (hidden from progs)
	prog->edictprivate = PR_Alloc(prog->max_edicts * sizeof(edict_engineprivate_t));
	// progs fields, often accessed by server
	prog->edictsfields = PR_Alloc(prog->max_edicts * prog->edict_size);*/
	// used by PushMove to move back pushed entities
	sv.moved_edicts = (prvm_edict_t **)PRVM_Alloc(prog->max_edicts * sizeof(prvm_edict_t *));
	/*for (i = 0;i < prog->max_edicts;i++)
	{
		ent = prog->edicts + i;
		ent->priv.vp = (unsigned char*) prog->edictprivate + i * prog->edictprivate_size;
		ent->fields.server = (void *)((unsigned char *)prog->edictsfields + i * prog->edict_size);
	}*/

	// reset client csqc entity versions right away.
	for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
		EntityFrameCSQC_InitClientVersions(i, true);

	sv.datagram.maxsize = sizeof(sv.datagram_buf);
	sv.datagram.cursize = 0;
	sv.datagram.data = sv.datagram_buf;

	sv.reliable_datagram.maxsize = sizeof(sv.reliable_datagram_buf);
	sv.reliable_datagram.cursize = 0;
	sv.reliable_datagram.data = sv.reliable_datagram_buf;

	sv.signon.maxsize = sizeof(sv.signon_buf);
	sv.signon.cursize = 0;
	sv.signon.data = sv.signon_buf;

// leave slots at start for clients only
	//prog->num_edicts = svs.maxclients+1;

	sv.state = ss_loading;
	prog->allowworldwrites = true;
	sv.paused = false;

	*prog->time = sv.time = 1.0;

	Mod_ClearUsed();
	worldmodel->used = true;

	strlcpy (sv.name, server, sizeof (sv.name));
	strlcpy(sv.modelname, modelname, sizeof(sv.modelname));
	sv.worldmodel = worldmodel;
	sv.models[1] = sv.worldmodel;

//
// clear world interaction links
//
	SV_ClearWorld ();

	strlcpy(sv.sound_precache[0], "", sizeof(sv.sound_precache[0]));

	strlcpy(sv.model_precache[0], "", sizeof(sv.model_precache[0]));
	strlcpy(sv.model_precache[1], sv.modelname, sizeof(sv.model_precache[1]));
	for (i = 1;i < sv.worldmodel->brush.numsubmodels;i++)
	{
		dpsnprintf(sv.model_precache[i+1], sizeof(sv.model_precache[i+1]), "*%i", i);
		sv.models[i+1] = Mod_ForName (sv.model_precache[i+1], false, false, false);
	}

//
// load the rest of the entities
//
	// AK possible hack since num_edicts is still 0
	ent = PRVM_EDICT_NUM(0);
	memset (ent->fields.server, 0, prog->progs->entityfields * 4);
	ent->priv.server->free = false;
	ent->fields.server->model = PRVM_SetEngineString(sv.modelname);
	ent->fields.server->modelindex = 1;		// world model
	ent->fields.server->solid = SOLID_BSP;
	ent->fields.server->movetype = MOVETYPE_PUSH;

	if (coop.value)
		prog->globals.server->coop = coop.integer;
	else
		prog->globals.server->deathmatch = deathmatch.integer;

	prog->globals.server->mapname = PRVM_SetEngineString(sv.name);

// serverflags are for cross level information (sigils)
	prog->globals.server->serverflags = svs.serverflags;

	// we need to reset the spawned flag on all connected clients here so that
	// their thinks don't run during startup (before PutClientInServer)
	// we also need to set up the client entities now
	// and we need to set the ->edict pointers to point into the progs edicts
	for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
	{
		host_client->spawned = false;
		host_client->edict = PRVM_EDICT_NUM(i + 1);
		PRVM_ED_ClearEdict(host_client->edict);
	}

	// load replacement entity file if found
	if (sv_entpatch.integer && (entities = (char *)FS_LoadFile(va("maps/%s.ent", sv.name), tempmempool, true, NULL)))
	{
		Con_Printf("Loaded maps/%s.ent\n", sv.name);
		PRVM_ED_LoadFromFile (entities);
		Mem_Free(entities);
	}
	else
		PRVM_ED_LoadFromFile (sv.worldmodel->brush.entities);


	// LordHavoc: clear world angles (to fix e3m3.bsp)
	VectorClear(prog->edicts->fields.server->angles);

// all setup is completed, any further precache statements are errors
	sv.state = ss_active;
	prog->allowworldwrites = false;

// run two frames to allow everything to settle
	for (i = 0;i < 2;i++)
	{
		sv.frametime = 0.1;
		SV_Physics ();
	}

	Mod_PurgeUnused();

// create a baseline for more efficient communications
	if (sv.protocol == PROTOCOL_QUAKE || sv.protocol == PROTOCOL_QUAKEDP || sv.protocol == PROTOCOL_NEHAHRAMOVIE)
		SV_CreateBaseline ();

// send serverinfo to all connected clients, and set up botclients coming back from a level change
	for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
	{
		if (!host_client->active)
			continue;
		if (host_client->netconnection)
			SV_SendServerinfo(host_client);
		else
		{
			int j;
			// if client is a botclient coming from a level change, we need to
			// set up client info that normally requires networking

			// copy spawn parms out of the client_t
			for (j=0 ; j< NUM_SPAWN_PARMS ; j++)
				(&prog->globals.server->parm1)[j] = host_client->spawn_parms[j];

			// call the spawn function
			host_client->clientconnectcalled = true;
			prog->globals.server->time = sv.time;
			prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
			PRVM_ExecuteProgram (prog->globals.server->ClientConnect, "QC function ClientConnect is missing");
			PRVM_ExecuteProgram (prog->globals.server->PutClientInServer, "QC function PutClientInServer is missing");
			host_client->spawned = true;
		}
	}

	Con_DPrint("Server spawned.\n");
	NetConn_Heartbeat (2);

	SV_VM_End();
}

/////////////////////////////////////////////////////
// SV VM stuff

void SV_VM_CB_BeginIncreaseEdicts(void)
{
	int i;
	prvm_edict_t *ent;

	PRVM_Free( sv.moved_edicts );
	sv.moved_edicts = (prvm_edict_t **)PRVM_Alloc(prog->max_edicts * sizeof(prvm_edict_t *));

	// links don't survive the transition, so unlink everything
	for (i = 0, ent = prog->edicts;i < prog->max_edicts;i++, ent++)
	{
		if (!ent->priv.server->free)
			SV_UnlinkEdict(prog->edicts + i);
		memset(&ent->priv.server->areagrid, 0, sizeof(ent->priv.server->areagrid));
	}
	SV_ClearWorld();
}

void SV_VM_CB_EndIncreaseEdicts(void)
{
	int i;
	prvm_edict_t *ent;

	for (i = 0, ent = prog->edicts;i < prog->max_edicts;i++, ent++)
	{
		// link every entity except world
		if (!ent->priv.server->free)
			SV_LinkEdict(ent, false);
	}
}

void SV_VM_CB_InitEdict(prvm_edict_t *e)
{
	// LordHavoc: for consistency set these here
	int num = PRVM_NUM_FOR_EDICT(e) - 1;

	e->priv.server->move = false; // don't move on first frame

	if (num >= 0 && num < svs.maxclients)
	{
		prvm_eval_t *val;
		// set colormap and team on newly created player entity
		e->fields.server->colormap = num + 1;
		e->fields.server->team = (svs.clients[num].colors & 15) + 1;
		// set netname/clientcolors back to client values so that
		// DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS will not immediately
		// reset them
		e->fields.server->netname = PRVM_SetEngineString(svs.clients[num].name);
		if ((val = PRVM_GETEDICTFIELDVALUE(e, eval_clientcolors)))
			val->_float = svs.clients[num].colors;
		// NEXUIZ_PLAYERMODEL and NEXUIZ_PLAYERSKIN
		if( eval_playermodel )
			PRVM_GETEDICTFIELDVALUE(e, eval_playermodel)->string = PRVM_SetEngineString(svs.clients[num].playermodel);
		if( eval_playerskin )
			PRVM_GETEDICTFIELDVALUE(e, eval_playerskin)->string = PRVM_SetEngineString(svs.clients[num].playerskin);
	}
}

void SV_VM_CB_FreeEdict(prvm_edict_t *ed)
{
	SV_UnlinkEdict (ed);		// unlink from world bsp

	ed->fields.server->model = 0;
	ed->fields.server->takedamage = 0;
	ed->fields.server->modelindex = 0;
	ed->fields.server->colormap = 0;
	ed->fields.server->skin = 0;
	ed->fields.server->frame = 0;
	VectorClear(ed->fields.server->origin);
	VectorClear(ed->fields.server->angles);
	ed->fields.server->nextthink = -1;
	ed->fields.server->solid = 0;
}

void SV_VM_CB_CountEdicts(void)
{
	int		i;
	prvm_edict_t	*ent;
	int		active, models, solid, step;

	active = models = solid = step = 0;
	for (i=0 ; i<prog->num_edicts ; i++)
	{
		ent = PRVM_EDICT_NUM(i);
		if (ent->priv.server->free)
			continue;
		active++;
		if (ent->fields.server->solid)
			solid++;
		if (ent->fields.server->model)
			models++;
		if (ent->fields.server->movetype == MOVETYPE_STEP)
			step++;
	}

	Con_Printf("num_edicts:%3i\n", prog->num_edicts);
	Con_Printf("active    :%3i\n", active);
	Con_Printf("view      :%3i\n", models);
	Con_Printf("touch     :%3i\n", solid);
	Con_Printf("step      :%3i\n", step);
}

qboolean SV_VM_CB_LoadEdict(prvm_edict_t *ent)
{
	// remove things from different skill levels or deathmatch
	if (gamemode != GAME_TRANSFUSION) //Transfusion does this in QC
	{
		if (deathmatch.integer)
		{
			if (((int)ent->fields.server->spawnflags & SPAWNFLAG_NOT_DEATHMATCH))
			{
				return false;
			}
		}
		else if ((current_skill <= 0 && ((int)ent->fields.server->spawnflags & SPAWNFLAG_NOT_EASY  ))
			|| (current_skill == 1 && ((int)ent->fields.server->spawnflags & SPAWNFLAG_NOT_MEDIUM))
			|| (current_skill >= 2 && ((int)ent->fields.server->spawnflags & SPAWNFLAG_NOT_HARD  )))
		{
			return false;
		}
	}
	return true;
}

cvar_t pr_checkextension = {CVAR_READONLY, "pr_checkextension", "1", "indicates to QuakeC that the standard quakec extensions system is available (if 0, quakec should not attempt to use extensions)"};
cvar_t nomonsters = {0, "nomonsters", "0", "unused cvar in quake, can be used by mods"};
cvar_t gamecfg = {0, "gamecfg", "0", "unused cvar in quake, can be used by mods"};
cvar_t scratch1 = {0, "scratch1", "0", "unused cvar in quake, can be used by mods"};
cvar_t scratch2 = {0,"scratch2", "0", "unused cvar in quake, can be used by mods"};
cvar_t scratch3 = {0, "scratch3", "0", "unused cvar in quake, can be used by mods"};
cvar_t scratch4 = {0, "scratch4", "0", "unused cvar in quake, can be used by mods"};
cvar_t savedgamecfg = {CVAR_SAVE, "savedgamecfg", "0", "unused cvar in quake that is saved to config.cfg on exit, can be used by mods"};
cvar_t saved1 = {CVAR_SAVE, "saved1", "0", "unused cvar in quake that is saved to config.cfg on exit, can be used by mods"};
cvar_t saved2 = {CVAR_SAVE, "saved2", "0", "unused cvar in quake that is saved to config.cfg on exit, can be used by mods"};
cvar_t saved3 = {CVAR_SAVE, "saved3", "0", "unused cvar in quake that is saved to config.cfg on exit, can be used by mods"};
cvar_t saved4 = {CVAR_SAVE, "saved4", "0", "unused cvar in quake that is saved to config.cfg on exit, can be used by mods"};
cvar_t nehx00 = {0, "nehx00", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx01 = {0, "nehx01", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx02 = {0, "nehx02", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx03 = {0, "nehx03", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx04 = {0, "nehx04", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx05 = {0, "nehx05", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx06 = {0, "nehx06", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx07 = {0, "nehx07", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx08 = {0, "nehx08", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx09 = {0, "nehx09", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx10 = {0, "nehx10", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx11 = {0, "nehx11", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx12 = {0, "nehx12", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx13 = {0, "nehx13", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx14 = {0, "nehx14", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx15 = {0, "nehx15", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx16 = {0, "nehx16", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx17 = {0, "nehx17", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx18 = {0, "nehx18", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t nehx19 = {0, "nehx19", "0", "nehahra data storage cvar (used in singleplayer)"};
cvar_t cutscene = {0, "cutscene", "1", "enables cutscenes in nehahra, can be used by other mods"};

void SV_VM_Init(void)
{
	Cvar_RegisterVariable (&pr_checkextension);
	Cvar_RegisterVariable (&nomonsters);
	Cvar_RegisterVariable (&gamecfg);
	Cvar_RegisterVariable (&scratch1);
	Cvar_RegisterVariable (&scratch2);
	Cvar_RegisterVariable (&scratch3);
	Cvar_RegisterVariable (&scratch4);
	Cvar_RegisterVariable (&savedgamecfg);
	Cvar_RegisterVariable (&saved1);
	Cvar_RegisterVariable (&saved2);
	Cvar_RegisterVariable (&saved3);
	Cvar_RegisterVariable (&saved4);
	// LordHavoc: Nehahra uses these to pass data around cutscene demos
	if (gamemode == GAME_NEHAHRA)
	{
		Cvar_RegisterVariable (&nehx00);
		Cvar_RegisterVariable (&nehx01);
		Cvar_RegisterVariable (&nehx02);
		Cvar_RegisterVariable (&nehx03);
		Cvar_RegisterVariable (&nehx04);
		Cvar_RegisterVariable (&nehx05);
		Cvar_RegisterVariable (&nehx06);
		Cvar_RegisterVariable (&nehx07);
		Cvar_RegisterVariable (&nehx08);
		Cvar_RegisterVariable (&nehx09);
		Cvar_RegisterVariable (&nehx10);
		Cvar_RegisterVariable (&nehx11);
		Cvar_RegisterVariable (&nehx12);
		Cvar_RegisterVariable (&nehx13);
		Cvar_RegisterVariable (&nehx14);
		Cvar_RegisterVariable (&nehx15);
		Cvar_RegisterVariable (&nehx16);
		Cvar_RegisterVariable (&nehx17);
		Cvar_RegisterVariable (&nehx18);
		Cvar_RegisterVariable (&nehx19);
	}
	Cvar_RegisterVariable (&cutscene); // for Nehahra but useful to other mods as well
}

// LordHavoc: in an effort to eliminate time wasted on GetEdictFieldValue...  these are defined as externs in progs.h
int eval_gravity;
int eval_button3;
int eval_button4;
int eval_button5;
int eval_button6;
int eval_button7;
int eval_button8;
int eval_button9;
int eval_button10;
int eval_button11;
int eval_button12;
int eval_button13;
int eval_button14;
int eval_button15;
int eval_button16;
int eval_buttonuse;
int eval_buttonchat;
int eval_glow_size;
int eval_glow_trail;
int eval_glow_color;
int eval_items2;
int eval_scale;
int eval_alpha;
int eval_renderamt; // HalfLife support
int eval_rendermode; // HalfLife support
int eval_fullbright;
int eval_ammo_shells1;
int eval_ammo_nails1;
int eval_ammo_lava_nails;
int eval_ammo_rockets1;
int eval_ammo_multi_rockets;
int eval_ammo_cells1;
int eval_ammo_plasma;
int eval_idealpitch;
int eval_pitch_speed;
int eval_viewmodelforclient;
int eval_nodrawtoclient;
int eval_exteriormodeltoclient;
int eval_drawonlytoclient;
int eval_ping;
int eval_movement;
int eval_pmodel;
int eval_punchvector;
int eval_viewzoom;
int eval_clientcolors;
int eval_tag_entity;
int eval_tag_index;
int eval_light_lev;
int eval_color;
int eval_style;
int eval_pflags;
int eval_cursor_active;
int eval_cursor_screen;
int eval_cursor_trace_start;
int eval_cursor_trace_endpos;
int eval_cursor_trace_ent;
int eval_colormod;
int eval_playermodel;
int eval_playerskin;
int eval_SendEntity;
int eval_Version;
int eval_customizeentityforclient;
int eval_dphitcontentsmask;
// DRESK - Support for Entity Contents Transition Event
int eval_contentstransition;

int gval_trace_dpstartcontents;
int gval_trace_dphitcontents;
int gval_trace_dphitq3surfaceflags;
int gval_trace_dphittexturename;

mfunction_t *SV_PlayerPhysicsQC;
mfunction_t *EndFrameQC;
//KrimZon - SERVER COMMANDS IN QUAKEC
mfunction_t *SV_ParseClientCommandQC;

void SV_VM_FindEdictFieldOffsets(void)
{
	eval_gravity = PRVM_ED_FindFieldOffset("gravity");
	eval_button3 = PRVM_ED_FindFieldOffset("button3");
	eval_button4 = PRVM_ED_FindFieldOffset("button4");
	eval_button5 = PRVM_ED_FindFieldOffset("button5");
	eval_button6 = PRVM_ED_FindFieldOffset("button6");
	eval_button7 = PRVM_ED_FindFieldOffset("button7");
	eval_button8 = PRVM_ED_FindFieldOffset("button8");
	eval_button9 = PRVM_ED_FindFieldOffset("button9");
	eval_button10 = PRVM_ED_FindFieldOffset("button10");
	eval_button11 = PRVM_ED_FindFieldOffset("button11");
	eval_button12 = PRVM_ED_FindFieldOffset("button12");
	eval_button13 = PRVM_ED_FindFieldOffset("button13");
	eval_button14 = PRVM_ED_FindFieldOffset("button14");
	eval_button15 = PRVM_ED_FindFieldOffset("button15");
	eval_button16 = PRVM_ED_FindFieldOffset("button16");
	eval_buttonuse = PRVM_ED_FindFieldOffset("buttonuse");
	eval_buttonchat = PRVM_ED_FindFieldOffset("buttonchat");
	eval_glow_size = PRVM_ED_FindFieldOffset("glow_size");
	eval_glow_trail = PRVM_ED_FindFieldOffset("glow_trail");
	eval_glow_color = PRVM_ED_FindFieldOffset("glow_color");
	eval_items2 = PRVM_ED_FindFieldOffset("items2");
	eval_scale = PRVM_ED_FindFieldOffset("scale");
	eval_alpha = PRVM_ED_FindFieldOffset("alpha");
	eval_renderamt = PRVM_ED_FindFieldOffset("renderamt"); // HalfLife support
	eval_rendermode = PRVM_ED_FindFieldOffset("rendermode"); // HalfLife support
	eval_fullbright = PRVM_ED_FindFieldOffset("fullbright");
	eval_ammo_shells1 = PRVM_ED_FindFieldOffset("ammo_shells1");
	eval_ammo_nails1 = PRVM_ED_FindFieldOffset("ammo_nails1");
	eval_ammo_lava_nails = PRVM_ED_FindFieldOffset("ammo_lava_nails");
	eval_ammo_rockets1 = PRVM_ED_FindFieldOffset("ammo_rockets1");
	eval_ammo_multi_rockets = PRVM_ED_FindFieldOffset("ammo_multi_rockets");
	eval_ammo_cells1 = PRVM_ED_FindFieldOffset("ammo_cells1");
	eval_ammo_plasma = PRVM_ED_FindFieldOffset("ammo_plasma");
	eval_idealpitch = PRVM_ED_FindFieldOffset("idealpitch");
	eval_pitch_speed = PRVM_ED_FindFieldOffset("pitch_speed");
	eval_viewmodelforclient = PRVM_ED_FindFieldOffset("viewmodelforclient");
	eval_nodrawtoclient = PRVM_ED_FindFieldOffset("nodrawtoclient");
	eval_exteriormodeltoclient = PRVM_ED_FindFieldOffset("exteriormodeltoclient");
	eval_drawonlytoclient = PRVM_ED_FindFieldOffset("drawonlytoclient");
	eval_ping = PRVM_ED_FindFieldOffset("ping");
	eval_movement = PRVM_ED_FindFieldOffset("movement");
	eval_pmodel = PRVM_ED_FindFieldOffset("pmodel");
	eval_punchvector = PRVM_ED_FindFieldOffset("punchvector");
	eval_viewzoom = PRVM_ED_FindFieldOffset("viewzoom");
	eval_clientcolors = PRVM_ED_FindFieldOffset("clientcolors");
	eval_tag_entity = PRVM_ED_FindFieldOffset("tag_entity");
	eval_tag_index = PRVM_ED_FindFieldOffset("tag_index");
	eval_light_lev = PRVM_ED_FindFieldOffset("light_lev");
	eval_color = PRVM_ED_FindFieldOffset("color");
	eval_style = PRVM_ED_FindFieldOffset("style");
	eval_pflags = PRVM_ED_FindFieldOffset("pflags");
	eval_cursor_active = PRVM_ED_FindFieldOffset("cursor_active");
	eval_cursor_screen = PRVM_ED_FindFieldOffset("cursor_screen");
	eval_cursor_trace_start = PRVM_ED_FindFieldOffset("cursor_trace_start");
	eval_cursor_trace_endpos = PRVM_ED_FindFieldOffset("cursor_trace_endpos");
	eval_cursor_trace_ent = PRVM_ED_FindFieldOffset("cursor_trace_ent");
	eval_colormod = PRVM_ED_FindFieldOffset("colormod");
	eval_playermodel = PRVM_ED_FindFieldOffset("playermodel");
	eval_playerskin = PRVM_ED_FindFieldOffset("playerskin");
	eval_SendEntity = PRVM_ED_FindFieldOffset("SendEntity");
	eval_Version = PRVM_ED_FindFieldOffset("Version");
	eval_customizeentityforclient = PRVM_ED_FindFieldOffset("customizeentityforclient");
	eval_dphitcontentsmask = PRVM_ED_FindFieldOffset("dphitcontentsmask");
	// DRESK - Support for Entity Contents Transition Event
	eval_contentstransition = PRVM_ED_FindFieldOffset("contentstransition");

	// LordHavoc: allowing QuakeC to override the player movement code
	SV_PlayerPhysicsQC = PRVM_ED_FindFunction ("SV_PlayerPhysics");
	// LordHavoc: support for endframe
	EndFrameQC = PRVM_ED_FindFunction ("EndFrame");
	//KrimZon - SERVER COMMANDS IN QUAKEC
	SV_ParseClientCommandQC = PRVM_ED_FindFunction ("SV_ParseClientCommand");
	gval_trace_dpstartcontents = PRVM_ED_FindGlobalOffset("trace_dpstartcontents");
	gval_trace_dphitcontents = PRVM_ED_FindGlobalOffset("trace_dphitcontents");
	gval_trace_dphitq3surfaceflags = PRVM_ED_FindGlobalOffset("trace_dphitq3surfaceflags");
	gval_trace_dphittexturename = PRVM_ED_FindGlobalOffset("trace_dphittexturename");
}

#define REQFIELDS (sizeof(reqfields) / sizeof(prvm_required_field_t))

prvm_required_field_t reqfields[] =
{
	{ev_entity, "cursor_trace_ent"},
	{ev_entity, "drawonlytoclient"},
	{ev_entity, "exteriormodeltoclient"},
	{ev_entity, "nodrawtoclient"},
	{ev_entity, "tag_entity"},
	{ev_entity, "viewmodelforclient"},
	{ev_float, "alpha"},
	{ev_float, "ammo_cells1"},
	{ev_float, "ammo_lava_nails"},
	{ev_float, "ammo_multi_rockets"},
	{ev_float, "ammo_nails1"},
	{ev_float, "ammo_plasma"},
	{ev_float, "ammo_rockets1"},
	{ev_float, "ammo_shells1"},
	{ev_float, "button3"},
	{ev_float, "button4"},
	{ev_float, "button5"},
	{ev_float, "button6"},
	{ev_float, "button7"},
	{ev_float, "button8"},
	{ev_float, "button9"},
	{ev_float, "button10"},
	{ev_float, "button11"},
	{ev_float, "button12"},
	{ev_float, "button13"},
	{ev_float, "button14"},
	{ev_float, "button15"},
	{ev_float, "button16"},
	{ev_float, "buttonchat"},
	{ev_float, "buttonuse"},
	{ev_float, "clientcolors"},
	{ev_float, "cursor_active"},
	{ev_float, "fullbright"},
	{ev_float, "glow_color"},
	{ev_float, "glow_size"},
	{ev_float, "glow_trail"},
	{ev_float, "gravity"},
	{ev_float, "idealpitch"},
	{ev_float, "items2"},
	{ev_float, "light_lev"},
	{ev_float, "pflags"},
	{ev_float, "ping"},
	{ev_float, "pitch_speed"},
	{ev_float, "pmodel"},
	{ev_float, "renderamt"}, // HalfLife support
	{ev_float, "rendermode"}, // HalfLife support
	{ev_float, "scale"},
	{ev_float, "style"},
	{ev_float, "tag_index"},
	{ev_float, "Version"},
	{ev_float, "viewzoom"},
	{ev_vector, "color"},
	{ev_vector, "colormod"},
	{ev_vector, "cursor_screen"},
	{ev_vector, "cursor_trace_endpos"},
	{ev_vector, "cursor_trace_start"},
	{ev_vector, "movement"},
	{ev_vector, "punchvector"},
	{ev_string, "playermodel"},
	{ev_string, "playerskin"},
	{ev_function, "SendEntity"},
	{ev_function, "customizeentityforclient"},
	// DRESK - Support for Entity Contents Transition Event
	{ev_function, "contentstransition"},
};

void SV_VM_Setup(void)
{
	extern cvar_t csqc_progname;	//[515]: csqc crc check and right csprogs name according to progs.dat
	extern cvar_t csqc_progcrc;
	unsigned char *csprogsdata;
	fs_offset_t csprogsdatasize;
	PRVM_Begin;
	PRVM_InitProg( PRVM_SERVERPROG );

	// allocate the mempools
	// TODO: move the magic numbers/constants into #defines [9/13/2006 Black]
	prog->progs_mempool = Mem_AllocPool("Server Progs", 0, NULL);
	prog->builtins = vm_sv_builtins;
	prog->numbuiltins = vm_sv_numbuiltins;
	prog->headercrc = PROGHEADER_CRC;
	prog->max_edicts = 512;
	prog->limit_edicts = MAX_EDICTS;
	prog->reserved_edicts = svs.maxclients;
	prog->edictprivate_size = sizeof(edict_engineprivate_t);
	prog->name = "server";
	prog->extensionstring = vm_sv_extensions;
	prog->loadintoworld = true;

	prog->begin_increase_edicts = SV_VM_CB_BeginIncreaseEdicts;
	prog->end_increase_edicts = SV_VM_CB_EndIncreaseEdicts;
	prog->init_edict = SV_VM_CB_InitEdict;
	prog->free_edict = SV_VM_CB_FreeEdict;
	prog->count_edicts = SV_VM_CB_CountEdicts;
	prog->load_edict = SV_VM_CB_LoadEdict;
	prog->init_cmd = VM_SV_Cmd_Init;
	prog->reset_cmd = VM_SV_Cmd_Reset;
	prog->error_cmd = Host_Error;

	// TODO: add a requiredfuncs list (ask LH if this is necessary at all)
	PRVM_LoadProgs( sv_progs.string, 0, NULL, REQFIELDS, reqfields );
	SV_VM_FindEdictFieldOffsets();

	VM_AutoSentStats_Clear();//[515]: csqc
	EntityFrameCSQC_ClearVersions();//[515]: csqc

	PRVM_End;

	// see if there is a csprogs.dat installed, and if so, set the csqc_progcrc accordingly, this will be sent to connecting clients to tell them to only load a matching csprogs.dat file
	sv.csqc_progcrc = -1;
	sv.csqc_progname[0] = 0;
	csprogsdata = FS_LoadFile(csqc_progname.string, tempmempool, true, &csprogsdatasize);
	if (csprogsdata)
	{
		strlcpy(sv.csqc_progname, csqc_progname.string, sizeof(sv.csqc_progname));
		sv.csqc_progcrc = CRC_Block(csprogsdata, csprogsdatasize);
		Mem_Free(csprogsdata);
		Con_DPrintf("server detected csqc progs file \"%s\" with crc %i\n", sv.csqc_progname, sv.csqc_progcrc);
	}
}

void SV_VM_Begin(void)
{
	PRVM_Begin;
	PRVM_SetProg( PRVM_SERVERPROG );

	*prog->time = (float) sv.time;
}

void SV_VM_End(void)
{
	PRVM_End;
}