/*
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"

void SV_VM_Init();
void SV_VM_Setup();

// select which protocol to host, this is fed to Protocol_EnumForName
cvar_t sv_protocolname = {0, "sv_protocolname", "DP7"};
cvar_t sv_ratelimitlocalplayer = {0, "sv_ratelimitlocalplayer", "0"};
cvar_t sv_maxrate = {CVAR_SAVE | CVAR_NOTIFY, "sv_maxrate", "10000"};

static cvar_t sv_cullentities_pvs = {0, "sv_cullentities_pvs", "1"}; // fast but loose
static cvar_t sv_cullentities_trace = {0, "sv_cullentities_trace", "0"}; // 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"};
static cvar_t sv_entpatch = {0, "sv_entpatch", "1"};

cvar_t sv_gameplayfix_grenadebouncedownslopes = {0, "sv_gameplayfix_grenadebouncedownslopes", "1"};
cvar_t sv_gameplayfix_noairborncorpse = {0, "sv_gameplayfix_noairborncorpse", "1"};
cvar_t sv_gameplayfix_stepdown = {0, "sv_gameplayfix_stepdown", "1"};
cvar_t sv_gameplayfix_stepwhilejumping = {0, "sv_gameplayfix_stepwhilejumping", "1"};
cvar_t sv_gameplayfix_swiminbmodels = {0, "sv_gameplayfix_swiminbmodels", "1"};
cvar_t sv_gameplayfix_setmodelrealbox = {0, "sv_gameplayfix_setmodelrealbox", "1"};
cvar_t sv_gameplayfix_blowupfallenzombies = {0, "sv_gameplayfix_blowupfallenzombies", "1"};
cvar_t sv_gameplayfix_findradiusdistancetobox = {0, "sv_gameplayfix_findradiusdistancetobox", "1"};

cvar_t sv_progs = {0, "sv_progs", "progs.dat" };

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)
{
	Cmd_AddCommand("sv_saveentfile", SV_SaveEntFile_f);
	Cvar_RegisterVariable (&sv_maxvelocity);
	Cvar_RegisterVariable (&sv_gravity);
	Cvar_RegisterVariable (&sv_friction);
	Cvar_RegisterVariable (&sv_edgefriction);
	Cvar_RegisterVariable (&sv_stopspeed);
	Cvar_RegisterVariable (&sv_maxspeed);
	Cvar_RegisterVariable (&sv_maxairspeed);
	Cvar_RegisterVariable (&sv_accelerate);
	Cvar_RegisterVariable (&sv_idealpitchscale);
	Cvar_RegisterVariable (&sv_aim);
	Cvar_RegisterVariable (&sv_nostep);
	Cvar_RegisterVariable (&sv_deltacompress);
	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_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, v;

	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++)
	{
		v = dir[i]*16;
		if (v > 127)
			v = 127;
		else if (v < -128)
			v = -128;
		MSG_WriteChar (&sv.datagram, v);
	}
	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, 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];

	// 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->message);
	MSG_WriteByte (&client->message, svc_print);
	dpsnprintf (message, sizeof (message), "\002\nServer: %s build %s (progs %i crc)", gamename, buildstring, prog->filecrc);
	MSG_WriteString (&client->message,message);

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

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

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

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

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

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

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

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

	client->sendsignon = true;
	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;

// 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");

	strcpy(client->name, "unconnected");
	strcpy(client->old_name, "unconnected");
	client->spawned = false;
	client->edict = PRVM_EDICT_NUM(clientnum+1);
	client->message.data = client->msgbuf;
	client->message.maxsize = sizeof(client->msgbuf);
	client->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] = 0.2;
			light[1] = 1;
			light[2] = 0.2;
			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 = val->vector[0] * 32.0f;cs->colormod[0] = bound(0, i, 255);
		i = val->vector[1] * 32.0f;cs->colormod[1] = bound(0, i, 255);
		i = 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
	{
		VectorCopy(cs->origin, cullmins);
		VectorCopy(cs->origin, 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, sv_writeentitiestoclient_testeye, testorigin, 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, sv_writeentitiestoclient_testeye, testorigin, 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, sv_writeentitiestoclient_testeye, testorigin, 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];

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));

	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);

	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;
	unsigned char	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, ent->fields.server->dmg_save);
		MSG_WriteByte (msg, 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 = 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] = ent->fields.server->view_ofs[2];
	stats[STAT_ITEMS] = items;
	stats[STAT_WEAPONFRAME] = ent->fields.server->weaponframe;
	stats[STAT_ARMOR] = ent->fields.server->armorvalue;
	stats[STAT_WEAPON] = client->weaponmodelindex;
	stats[STAT_HEALTH] = ent->fields.server->health;
	stats[STAT_AMMO] = ent->fields.server->currentammo;
	stats[STAT_SHELLS] = ent->fields.server->ammo_shells;
	stats[STAT_NAILS] = ent->fields.server->ammo_nails;
	stats[STAT_ROCKETS] = ent->fields.server->ammo_rockets;
	stats[STAT_CELLS] = ent->fields.server->ammo_cells;
	stats[STAT_ACTIVEWEAPON] = 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, 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, 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, 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, min(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, min(stats[STAT_VIEWZOOM], 255));
			else
				MSG_WriteShort (msg, min(stats[STAT_VIEWZOOM], 65535));
		}
	}
}

/*
=======================
SV_SendClientDatagram
=======================
*/
static unsigned char sv_sendclientdatagram_buf[NET_MAXMESSAGE]; // FIXME?
qboolean 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 = bound(NET_MINRATE, sv_maxrate.integer, NET_MAXRATE);
		if (sv_maxrate.integer != maxrate)
			Cvar_SetValueQuick(&sv_maxrate, maxrate);

		rate = bound(NET_MINRATE, client->rate, maxrate);
		rate = (int)(client->rate * sys_ticrate.value);
		maxsize = bound(100, rate, 1400);
		maxsize2 = 1400;
	}

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

	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);
	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);

// send the datagram
	if (NetConn_SendUnreliableMessage (client->netconnection, &msg) == -1)
	{
		SV_DropClient (true);// if the message couldn't send, kick off
		return false;
	}

	return true;
}

/*
=======================
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);
			strcpy(host_client->old_name, host_client->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->message, sv.reliable_datagram.data, sv.reliable_datagram.cursize);

	SZ_Clear (&sv.reliable_datagram);
}


/*
=======================
SV_SendNop

Send a nop message without trashing or sending the accumulated client
message buffer
=======================
*/
void SV_SendNop (client_t *client)
{
	sizebuf_t	msg;
	unsigned char		buf[4];

	msg.data = buf;
	msg.maxsize = sizeof(buf);
	msg.cursize = 0;

	MSG_WriteChar (&msg, svc_nop);

	if (NetConn_SendUnreliableMessage (client->netconnection, &msg) == -1)
		SV_DropClient (true);	// if the message couldn't send, kick off
	client->last_message = realtime;
}

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

// 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)
		{
			SZ_Clear(&host_client->message);
			continue;
		}

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

		if (host_client->spawned)
		{
			if (!prepared)
			{
				prepared = true;
				// only prepare entities once per frame
				SV_PrepareEntitiesForSending();
			}
			if (!SV_SendClientDatagram (host_client))
				continue;
		}
		else
		{
		// the player isn't totally in the game yet
		// send small keepalive messages if too much time has passed
		// send a full message when the next signon stage has been requested
		// some other message data (name changes, etc) may accumulate
		// between signon stages
			if (!host_client->sendsignon)
			{
				if (realtime - host_client->last_message > 5)
					SV_SendNop (host_client);
				continue;	// don't send out non-signon messages
			}
		}

		if (host_client->message.cursize || host_client->dropasap)
		{
			if (!NetConn_CanSendMessage (host_client->netconnection))
				continue;

			if (host_client->dropasap)
				SV_DropClient (false);	// went to another level
			else
			{
				if (NetConn_SendReliableMessage (host_client->netconnection, &host_client->message) == -1)
					SV_DropClient (true);	// if the message couldn't send, kick off
				SZ_Clear (&host_client->message);
				host_client->last_message = realtime;
				host_client->sendsignon = false;
			}
		}
	}

// 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 = svent->fields.server->frame;
		svent->priv.server->baseline.skin = 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 = 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_SendReconnect

Tell all the clients that the server is changing levels
================
*/
void SV_SendReconnect (void)
{
#if 1
	MSG_WriteByte(&sv.reliable_datagram, svc_stufftext);
	MSG_WriteString(&sv.reliable_datagram, "reconnect\n");
#else
	unsigned char data[128];
	sizebuf_t msg;

	msg.data = data;
	msg.cursize = 0;
	msg.maxsize = sizeof(data);

	MSG_WriteChar (&msg, svc_stufftext);
	MSG_WriteString (&msg, "reconnect\n");
	NetConn_SendToAll (&msg, 5);

	if (cls.state != ca_dedicated)
		Cmd_ExecuteString ("reconnect\n", src_command);
#endif
}


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

//
// tell all connected clients that we are going to a new level
//
	if (sv.active)
	{
		SV_VM_Begin();
		SV_SendReconnect();
		SV_VM_End();
	}
	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
//
	Host_ClearMemory ();

	memset (&sv, 0, sizeof(sv));

	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);
	}*/

	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));
	strcpy(sv.modelname, 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
	entities = NULL;
	if (sv_entpatch.integer)
		entities = (char *)FS_LoadFile(va("maps/%s.ent", sv.name), tempmempool, true, NULL);
	if (entities)
	{
		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 = host_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;

	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"};
cvar_t	nomonsters = {0, "nomonsters", "0"};
cvar_t	gamecfg = {0, "gamecfg", "0"};
cvar_t	scratch1 = {0, "scratch1", "0"};
cvar_t	scratch2 = {0,"scratch2", "0"};
cvar_t	scratch3 = {0, "scratch3", "0"};
cvar_t	scratch4 = {0, "scratch4", "0"};
cvar_t	savedgamecfg = {CVAR_SAVE, "savedgamecfg", "0"};
cvar_t	saved1 = {CVAR_SAVE, "saved1", "0"};
cvar_t	saved2 = {CVAR_SAVE, "saved2", "0"};
cvar_t	saved3 = {CVAR_SAVE, "saved3", "0"};
cvar_t	saved4 = {CVAR_SAVE, "saved4", "0"};
cvar_t	decors = {0, "decors", "0"};
cvar_t	nehx00 = {0, "nehx00", "0"};cvar_t	nehx01 = {0, "nehx01", "0"};
cvar_t	nehx02 = {0, "nehx02", "0"};cvar_t	nehx03 = {0, "nehx03", "0"};
cvar_t	nehx04 = {0, "nehx04", "0"};cvar_t	nehx05 = {0, "nehx05", "0"};
cvar_t	nehx06 = {0, "nehx06", "0"};cvar_t	nehx07 = {0, "nehx07", "0"};
cvar_t	nehx08 = {0, "nehx08", "0"};cvar_t	nehx09 = {0, "nehx09", "0"};
cvar_t	nehx10 = {0, "nehx10", "0"};cvar_t	nehx11 = {0, "nehx11", "0"};
cvar_t	nehx12 = {0, "nehx12", "0"};cvar_t	nehx13 = {0, "nehx13", "0"};
cvar_t	nehx14 = {0, "nehx14", "0"};cvar_t	nehx15 = {0, "nehx15", "0"};
cvar_t	nehx16 = {0, "nehx16", "0"};cvar_t	nehx17 = {0, "nehx17", "0"};
cvar_t	nehx18 = {0, "nehx18", "0"};cvar_t	nehx19 = {0, "nehx19", "0"};
cvar_t	cutscene = {0, "cutscene", "1"};

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: for DarkPlaces, this overrides the number of decors (shell casings, gibs, etc)
	Cvar_RegisterVariable (&decors);
	// 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_customizeentityforclient;

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_customizeentityforclient = PRVM_ED_FindFieldOffset("customizeentityforclient");

	// 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");
}

#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, "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, "customizeentityforclient"},
};

void SV_VM_Setup(void)
{
	PRVM_Begin;
	PRVM_InitProg( PRVM_SERVERPROG );

	// allocate the mempools
	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();

	PRVM_End;
}

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

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

void SV_VM_End(void)
{
	PRVM_End;
}