/*
Copyright (C) 1996-2001 Id Software, Inc.
Copyright (C) 2002-2009 John Fitzgibbons and others
Copyright (C) 2009-2014 Baker and others

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"

server_t		sv;
server_static_t	svs;
cbool		isDedicated;

static char	localmodels[MAX_FITZQUAKE_MODELS][8];			// inline model names for precache

int sv_protocol = PROTOCOL_FITZQUAKE; //johnfitz
#ifdef SUPPORTS_SERVER_PROTOCOL_15
int host_protocol_datagram_maxsize = MAX_MARK_V_DATAGRAM; // Baker
#endif // SUPPORTS_SERVER_PROTOCOL_15

extern cbool		pr_alpha_supported; //johnfitz

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

/*
===============
SV_Protocol_f
===============
*/
void SV_Protocol_f (lparse_t *line)
{
	int i;

	switch (line->count)
	{
	case 1:
		Con_PrintLinef (QUOTEDSTR("sv_protocol") " is " QUOTED_D, sv_protocol);
		break;
	case 2:
		i = atoi(line->args[1]);

		if (i != PROTOCOL_NETQUAKE && i != PROTOCOL_FITZQUAKE && i != PROTOCOL_FITZQUAKE_PLUS)
			Con_PrintLinef ("sv_protocol must be %d, %d or %d", PROTOCOL_NETQUAKE, PROTOCOL_FITZQUAKE, PROTOCOL_FITZQUAKE_PLUS);
		else
		{
			sv_protocol = i;

			if (sv.active)
				Con_PrintLinef ("changes will not take effect until the next map load.");
		}

		break;
	default:
		Con_SafePrintLinef ("usage: sv_protocol <protocol>");
		break;
	}
}



// SV_Cheats didn't notify that a level change or map restart was needed
void SV_Cheats_f (cvar_t *var)
{
	if (sv.active)
		Con_PrintLinef ("sv_cheats change will take effect on map restart/change.");

}


/*
===============
SV_Init
===============
*/
void SV_Init (void)
{
	int		i;
	Cmd_AddCommands (SV_Init);

	for (i=0 ; i<MAX_FITZQUAKE_MODELS ; i++)
		c_snprintf1 (localmodels[i], "*%d", i); // Inline model names for precache

	Con_SafePrintLinef ("Exe: "__TIME__" "__DATE__"");
	Con_SafePrintLinef ("%4.1f megabyte heap", host_parms.memsize / (1024 * 1024.0)); // Baker: Funny, not 2009 SI MB
}

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

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;

#ifdef SUPPORTS_SERVER_PROTOCOL_15
	if (sv.datagram.cursize > host_protocol_datagram_maxsize - 16) // Baker: 16 is size of data we would be adding in this function
#endif // SUPPORTS_SERVER_PROTOCOL_15
		return;

	MSG_WriteByte (&sv.datagram, svc_particle);
	MSG_WriteCoord (&sv.datagram, org[0]);
	MSG_WriteCoord (&sv.datagram, org[1]);
	MSG_WriteCoord (&sv.datagram, org[2]);
	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_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 (edict_t *entity, int channel, const char *sample, int volume, float attenuation)
{
    int         sound_num, ent;
    int 		i, field_mask;

	if (volume < 0 || volume > 255)
		Host_Error ("SV_StartSound: volume = %d", volume);

	if (attenuation < 0 || attenuation > 4)
		Host_Error ("SV_StartSound: attenuation = %f", attenuation);

	if (channel < 0 || channel > 7)
		Host_Error ("SV_StartSound: channel = %d", channel);

#ifdef SUPPORTS_SERVER_PROTOCOL_15
	if (sv.datagram.cursize > host_protocol_datagram_maxsize - 16)
#endif // SUPPORTS_SERVER_PROTOCOL_15
		return;

// find precache number for sound
    for (sound_num = 1 ; sound_num < MAX_FITZQUAKE_SOUNDS && sv.sound_precache[sound_num] ; sound_num++)
	{
        if (!strcmp(sample, sv.sound_precache[sound_num]))
            break;
	}

    if ( sound_num == MAX_FITZQUAKE_SOUNDS || !sv.sound_precache[sound_num] )
    {
        Con_PrintLinef ("SV_StartSound: %s not precacheed", sample);
        return;
    }

	ent = 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;

	//johnfitz -- PROTOCOL_FITZQUAKE
	if (ent >= 8192)
	{
		if (sv.protocol == PROTOCOL_NETQUAKE)
			return; //don't send any info protocol can't support
		else field_mask |= SND_LARGEENTITY;
	}

	if (sound_num >= 256 || channel >= 8)
	{
		if (sv.protocol == PROTOCOL_NETQUAKE)
			return; //don't send any info protocol can't support
		else field_mask |= SND_LARGESOUND;
	}

	//johnfitz

// directed messages go only to the entity the 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);

	//johnfitz -- PROTOCOL_FITZQUAKE
	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);

	//johnfitz

	for (i=0 ; i<3 ; i++)
		MSG_WriteCoord (&sv.datagram, entity->v.origin[i] + 0.5 * (entity->v.mins[i]+entity->v.maxs[i]));
}


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

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_Hints_List_f (lparse_t *unused)
{
	hint_type_t hint_num;
	if (sv.active)
	{
		Con_PrintLinef ("Server hints:");
		for (hint_num = 0; hint_num < MAX_NUM_HINTS; hint_num ++)
		{
			const char *hintname = hintnames[hint_num].keystring;
			const char *hintvalue = sv.hintstrings[hint_num];

			Con_PrintLinef ("%-10s: %s", hintname, hintvalue);
		}
	} else Con_PrintLinef ("no active server");
}

static void SV_HintStrings_NewMap (void)
{
	const char *hud_style_name = Gamedir_TypeName ();

	hint_type_t hint_num;

	for (hint_num = 0; hint_num < MAX_NUM_HINTS; hint_num ++)
	{
		char *sv_make_hint_string = sv.hintstrings[hint_num];
		switch (hint_num)
		{
		case hint_game:
			c_snprintfc (sv_make_hint_string, MAX_HINT_BUF_64, "%s %s", gamedir_shortname(), hud_style_name);
			break;
		case hint_skill:
//			if (!pr_global_struct->deathmatch) // Don't bother with a deathmatch skill hint
				c_snprintfc (sv_make_hint_string, MAX_HINT_BUF_64, "%d", sv.current_skill );
			break;
		case hint_fileserver_port:
//			if (!svs.listening) // Don't bother with a deathmatch skill hint
				c_snprintfc (sv_make_hint_string, MAX_HINT_BUF_64, "%d", sv.fileserver_port );
			break;

		
		default:
			Host_Error ("SV_HintStrings: Unknown hint_num %d", hint_num);
		}
	}

}

// If early, send the game only.
// If late, send everything.  Even the game again.  Client clears that on new map.
// Which occurs real early.
static void SV_InsertHints (client_t *client, cbool early)
{
	const char *sv_hint_string;
	int hstart = 0, hlast_plus_one = MAX_NUM_HINTS;

	hint_type_t hint_num;
	Con_DPrintLinef_Net ("Send hints ... Early? = %d", early);

	// Must send gamedir change very early.
	// Other hints must occur AFTER
	if (early)
		hstart = hint_game /* 0 */, hlast_plus_one = 1;
	else hstart = 0 /* 1 */, hlast_plus_one = MAX_NUM_HINTS;

	for (hint_num = hstart; hint_num < hlast_plus_one; hint_num ++)
	{
		if (sv.hintstrings[hint_num][0] == 0)
			continue; // omitted

		// Issue a commented out svc_stufftext like "//hint game warp -quoth"
		sv_hint_string = va("%s%s %s" NEWLINE, HINT_MESSAGE_PREIX, hintnames[hint_num].keystring, &sv.hintstrings[hint_num][0]);
		Con_DPrintLinef_Net ("Sending: %s", sv_hint_string); // No newline, hint_string already has one
		MSG_WriteByte (&client->message, svc_stufftext);
		MSG_WriteString (&client->message, sv_hint_string);
	}
}



void SV_SendServerinfo (client_t *client)
{
	const char		**s;
	char			message[2048];
	int				i; //johnfitz

	MSG_WriteByte (&client->message, svc_print);
	c_snprintf4 (message, "%c\n%s %1.2f SERVER (%d CRC)\n", 2, ENGINE_NAME, QUAKE_VERSION, pr_crc); //johnfitz -- include fitzquake version
	MSG_WriteString (&client->message, message);

	SV_InsertHints (client, true /* early hints */); // Baker -- throw some extra hints to client here.

	MSG_WriteByte (&client->message, svc_serverinfo);
	MSG_WriteLong (&client->message, sv.protocol); //johnfitz -- sv.protocol instead of PROTOCOL_VERSION
	MSG_WriteByte (&client->message, svs.maxclients_internal); // We tell clients the big limit so we change it at any time if we choose.



	// Baker: modification, indicate the scoreboard type using flag set at map spawn
	if (!pr_global_struct->coop && pr_global_struct->deathmatch)
		MSG_WriteByte (&client->message, GAME_DEATHMATCH);
	else MSG_WriteByte (&client->message, GAME_COOP);

	c_strlcpy (message, PR_GetString(sv.edicts->v.message));

	MSG_WriteString (&client->message, message);

	//johnfitz -- only send the first 256 model and sound precaches if protocol is 15
	for (i=0,s = sv.model_precache+1 ; *s; s++,i++)
		if (sv.protocol != PROTOCOL_NETQUAKE || i < 256)
			MSG_WriteString (&client->message, *s);

	MSG_WriteByte (&client->message, 0);

	for (i=0,s = sv.sound_precache+1 ; *s ; s++,i++)
		if (sv.protocol != PROTOCOL_NETQUAKE || i < 256)
			MSG_WriteString (&client->message, *s);

	MSG_WriteByte (&client->message, 0);
	//johnfitz

// send music
	MSG_WriteByte (&client->message, svc_cdtrack);
	MSG_WriteByte (&client->message, sv.edicts->v.sounds);
	MSG_WriteByte (&client->message, sv.edicts->v.sounds);

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

// send late hints
	Con_DPrintLinef ("Ready to send late hints");
	SV_InsertHints (client, false /* late hints */); // Baker -- throw some extra hints to client here.


	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)
{
	edict_t			*ent;
	client_t		*client;
	int				edictnum;
	struct qsocket_s *netconnection;
	int				i;
	float			spawn_parms[NUM_SPAWN_PARMS];

	client = svs.clients + clientnum;

	Con_DPrintLinef ("Client %s connected", NET_QSocketGetTrueAddressString(client->netconnection));

	edictnum = clientnum+1;

	ent = EDICT_NUM(edictnum);

// set up the client_t
	netconnection = client->netconnection;
//	net_activeconnections++;

	if (sv.loadgame)
		memcpy (spawn_parms, client->spawn_parms, sizeof(spawn_parms));

	memset (client, 0, sizeof(*client));
	client->netconnection = netconnection;

	c_strlcpy (client->name, "unconnected");
	client->active = true;
	Player_IPv4_List_Update ();
	client->spawned = false;
	client->edict = ent;
	client->message.data = client->msgbuf;
	client->message.maxsize = sizeof(client->msgbuf);
	client->message.allowoverflow = true;		// we can catch it
	client->privileged = false;

	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
		PR_ExecuteProgram (pr_global_struct->SetNewParms);

		for (i=0 ; i<NUM_SPAWN_PARMS ; i++)
			client->spawn_parms[i] = (&pr_global_struct->parm1)[i];
	}

	SV_SendServerinfo (client);
}


/*
===================
SV_CheckForNewClients

===================
*/
// Called exclusively by SV_UpdateServer
static void SV_Host_Frame_UpdateServer_CheckForNewClients (void)
{
	struct qsocket_s	*ret;
	int				i;

// check for new connections
	while (1)
	{
		ret = NET_CheckNewConnections ();

		if (!ret)
			break;

	// init a new client structure
		for (i = 0; i < svs.maxclients_internal; i++)  // Because the cap can change at any time now.
			if (!svs.clients[i].active)
				break;

		if (i == svs.maxclients_internal) // Because the cap can change at any time now.
			Host_Error ("SV_CheckForNewClients: no free clients"); // Host_Error is superior form of System_Error

		svs.clients[i].netconnection = ret;
		SV_ConnectClient (i);

		net_activeconnections++;  //NETQ 20.1 // This goes away, is done in SV_ClientConnect now
	}
}



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

FRAME UPDATES

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

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

==================
*/
static void SV_Host_Frame_UpdateServer_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.

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

static int	fatbytes;
static byte	fatpvs[MAX_MAP_LEAFS/8];

void SV_AddToFatPVS (vec3_t org, mnode_t *node, qmodel_t *worldmodel) //johnfitz -- added worldmodel as a parameter
{
	int		i;
	byte	*pvs;
	mplane_t	*plane;
	float	d;

	while (1)
	{
	// if this is a leaf, accumulate the pvs bits
		if (node->contents < 0)
		{
			if (node->contents != CONTENTS_SOLID)
			{
				pvs = Mod_LeafPVS ( (mleaf_t *)node, worldmodel); //johnfitz -- worldmodel as a parameter

				for (i=0 ; i<fatbytes ; i++)
					fatpvs[i] |= pvs[i];
			}

			return;
		}

		plane = node->plane;
		d = DotProduct (org, plane->normal) - plane->dist;

		if (d > 8)
			node = node->children[0];
		else if (d < -8)
			node = node->children[1];
		else
		{
			// go down both
			SV_AddToFatPVS (org, node->children[0], worldmodel); //johnfitz -- worldmodel as a parameter
			node = node->children[1];
		}
	}
}

/*
=============
SV_FatPVS

Calculates a PVS that is the inclusive or of all leafs within 8 pixels of the
given point.
=============
*/
byte *SV_FatPVS (vec3_t org, qmodel_t *worldmodel) //johnfitz -- added worldmodel as a parameter
{
	fatbytes = (worldmodel->numleafs + 31) >> 3; // divide by 8
	memset (fatpvs, 0, fatbytes);
	SV_AddToFatPVS (org, worldmodel->nodes, worldmodel); //johnfitz -- worldmodel as a parameter
	return fatpvs;
}


cbool Q1BSP_Trace (qmodel_t *model, int forcehullnum, int frame, const vec3_t start, const vec3_t end, const vec3_t mins, const vec3_t maxs, trace_t *trace)
{
	hull_t *hull;
	vec3_t size;
	vec3_t start_l, end_l;
	vec3_t offset;

	memset (trace, 0, sizeof(trace_t));
	trace->fraction = 1;
	trace->allsolid = true;

	VectorSubtract (maxs, mins, size);
	if (forcehullnum >= 1 && forcehullnum <= MAX_MAP_HULLS && model->hulls[forcehullnum-1].available)
		hull = &model->hulls[forcehullnum-1];
	else
	{
		if (size[0] < 3 || !model->hulls[1].available)
			hull = &model->hulls[0];
		else if (size[0] <= 32)
		{
			if (size[2] < 54 && model->hulls[3].available)
				hull = &model->hulls[3]; // 32x32x36 (half-life's crouch)
			else
				hull = &model->hulls[1];
		}
		else
			hull = &model->hulls[2];
	}

// calculate an offset value to center the origin
	VectorSubtract (hull->clip_mins, mins, offset);
	VectorSubtract(start, offset, start_l);
	VectorSubtract(end, offset, end_l);
	SV_RecursiveHullCheck(hull, hull->firstclipnode, 0, 1, start_l, end_l, trace);
	if (trace->fraction == 1)
	{
		VectorCopy (end, trace->endpos);
	}
	else
	{
		VectorAdd (trace->endpos, offset, trace->endpos);
	}

	return trace->fraction != 1;
}


cbool SV_InvisibleToClient(edict_t *viewer, edict_t *seen)
{
	int i;
	trace_t tr;
	vec3_t start;
	vec3_t end;

//	if (seen->v->solid == SOLID_BSP)
//		return false;	//bsp ents are never culled this way

	//stage 1: check against their origin
	VectorAdd(viewer->v.origin, viewer->v.view_ofs, start);
	tr.fraction = 1;

	if (!Q1BSP_Trace (sv.worldmodel, 1, 0, start, seen->v.origin, vec3_origin, vec3_origin, &tr))
		return false;	//wasn't blocked


	//stage 2: check against their bbox
	for (i = 0; i < 8; i++)
	{
		end[0] = seen->v.origin[0] + ((i&1)? seen->v.mins[0]: seen->v.maxs[0]);
		end[1] = seen->v.origin[1] + ((i&2)? seen->v.mins[1]: seen->v.maxs[1]);
		end[2] = seen->v.origin[2] + ((i&4)? seen->v.mins[2]+0.1: seen->v.maxs[2]);

		tr.fraction = 1;
		if (!Q1BSP_Trace (sv.worldmodel, 1, 0, start, end, vec3_origin, vec3_origin, &tr))
			return false;	//this trace went through, so don't cull
	}

	return true;
}


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

/*
=============
SV_WriteEntitiesToClient

=============
*/
void SV_WriteEntitiesToClient (edict_t	*clent, sizebuf_t *msg)
{
	int		e, i;
	int		bits;
	byte	*pvs;
	vec3_t	org;
	float	miss;
	edict_t	*ent;
	unsigned char ent_alpha;
// find the client's PVS
	VectorAdd (clent->v.origin, clent->v.view_ofs, org);
	pvs = SV_FatPVS (org, sv.worldmodel);

// send over all entities (excpet the client) that touch the pvs
	ent = NEXT_EDICT(sv.edicts);
	for (e = 1 ; e < sv.num_edicts ; e++, ent = NEXT_EDICT(ent))
	{
// ignore if not touching a PV leaf
		if (ent != clent)	// clent is ALWAYS sent
		{
			// ignore ents without visible models
			if (!ent->v.modelindex || !PR_GetString(ent->v.model)[0] )
				continue;

#pragma message ("Baker: Above statement might want to convey ents without models if they have effects, but do it with a different protocol")

			//johnfitz -- don't send model>255 entities if protocol is 15
			if (sv.protocol == PROTOCOL_NETQUAKE && (int)ent->v.modelindex & 0xFF00)
				continue;

			if (!sv_novis.value)
			{
				// Baker: Trivial accept from Spike and MH
				if (ent->num_leafs <= MAX_MARK_V_ENT_LEAFS)
				{
					// ignore if not touching a PV leaf
					for (i=0 ; i < ent->num_leafs ; i++)
						if (pvs[ent->leafnums[i] >> 3] & (1 << (ent->leafnums[i]&7) ))
							break;
					if (i == ent->num_leafs)
						continue;		// not visible
				} // else Con_PrintLinef ("Trivial accept %d", e); // Else Trivial accept
			}

			if (sv_cullentities.value) // 1 = players.  2 = everything.
				if (e <= svs.maxclients_internal || sv_cullentities.value > 1 ) // A player or we are checking everything.   // Because the cap can change at any time now.
					if (ent->v.movetype != MOVETYPE_PUSH && SV_InvisibleToClient(clent, ent)) // Baker: R00k don't cull doors, lifts, etc. which are MOVETYPE_PUSH
						continue; // Entity cannot be seen, don't send it

			if (sv_full_invisibility.value && /*ent->v.modelindex == 1*/ (sv.models[ (int)ent->v.modelindex]->modelflags & MOD_EYES))
				continue;
	
			if (sv_filter_gibs.value && (sv.models[ (int)ent->v.modelindex]->modelflags & MOD_GIBS) )	
				continue;

			

		}

		//johnfitz -- max size for protocol 15 is 18 bytes, not 16 as originally
		//assumed here.  And, for protocol 85 the max size is actually 24 bytes.
		if (msg->cursize + 24 > msg->maxsize)
		{
			//johnfitz -- less spammy overflow message
			if (!dev_overflows.packetsize || dev_overflows.packetsize + CONSOLE_RESPAM_TIME < realtime )
			{
				Con_PrintLinef ("Packet overflow!");
				dev_overflows.packetsize = realtime;
			}

			goto stats;
			//johnfitz
		}

// send an update
		bits = 0;

		for (i=0 ; i<3 ; i++)
		{
			miss = ent->v.origin[i] - ent->baseline.origin[i];
			if ( miss < -0.1 || miss > 0.1 )
				bits |= U_ORIGIN1<<i;
		}

		if ( ent->v.angles[0] != ent->baseline.angles[0] ) bits |= U_ANGLE1;
		if ( ent->v.angles[1] != ent->baseline.angles[1] ) bits |= U_ANGLE2;
		if ( ent->v.angles[2] != ent->baseline.angles[2] ) bits |= U_ANGLE3;

		if (ent->v.movetype == MOVETYPE_STEP) bits |= U_STEP;	// don't mess up the step animation
		if (ent->baseline.colormap != ent->v.colormap) bits |= U_COLORMAP;
		if (ent->baseline.skin != ent->v.skin) bits |= U_SKIN;
		if (ent->baseline.frame != ent->v.frame) bits |= U_FRAME;
		if (ent->baseline.effects != ent->v.effects) bits |= U_EFFECTS;
		if (ent->baseline.modelindex != ent->v.modelindex) bits |= U_MODEL;

		//johnfitz -- alpha
		// Baker: Coop protection uses spawn alpha no matter what.
		// What does this do for PURE protocol 15, though?  Test but I think is ok.
#if 1  // Dec 2 2016
		ent_alpha = ent->alpha; // fallback.
#endif
		if (e <= svs.maxclients_internal && svs.clients[e - 1].coop_protect_end_time) { // Because the cap can change at any time now.
			// If progs for some reason has player already alphaed, that's just tough cookies but bloody unlikely.
			float pct0	= (svs.clients[e - 1].coop_protect_end_time - sv.time) / COOP_PROTECT_INTERVAL_5_0;
			float pct1 = 1 - CLAMP(0, pct0, 1);
			float pct  = CLAMP( (1/128.0), pct1, 1);
			ent_alpha = ENTALPHA_ENCODE(pct);
		} else if (pr_alpha_supported ) {
			// Actual progs alpha support like back2forwards or Nehahra.
			// Note Arcane Dimensions doesn't have?  Wonder if looks same in DP.
			eval_t	*val = GETEDICTFIELDVALUE(ent, eval_alpha);
			if (val)
				ent_alpha = ent->alpha = ENTALPHA_ENCODE(val->_float);
		} // else ent_alpha = ent->alpha; // Commented out Dec 2

		//don't send invisible entities unless they have effects
		if (ent_alpha == ENTALPHA_ZERO && !ent->v.effects)
		{
			continue;
		}

		//johnfitz -- PROTOCOL_FITZQUAKE
		if (sv.protocol != PROTOCOL_NETQUAKE)
		{
			if (ent->baseline.alpha != ent_alpha) bits |= U_ALPHA;
			if (bits & U_FRAME && (int)ent->v.frame & 0xFF00) bits |= U_FRAME2;
			if (bits & U_MODEL && (int)ent->v.modelindex & 0xFF00) bits |= U_MODEL2;
			if (ent->sendinterval) bits |= U_LERPFINISH;
			if (bits >= 65536) bits |= U_EXTEND1;
			if (bits >= 16777216) bits |= U_EXTEND2;
		}
		//johnfitz

		if (e >= 256) bits |= U_LONGENTITY;
		if (bits >= 256) bits |= U_MOREBITS;

		// write the message
		MSG_WriteByte (msg, bits | U_SIGNAL);

		if (bits & U_MOREBITS) MSG_WriteByte (msg, bits>>8);

		//johnfitz -- PROTOCOL_FITZQUAKE
		if (bits & U_EXTEND1) MSG_WriteByte(msg, bits>>16);
		if (bits & U_EXTEND2) MSG_WriteByte(msg, bits>>24);
		//johnfitz

		if (bits & U_LONGENTITY)
			MSG_WriteShort (msg,e);
		else MSG_WriteByte (msg,e);

		if (bits & U_MODEL) MSG_WriteByte (msg,	ent->v.modelindex);
		if (bits & U_FRAME) MSG_WriteByte (msg, ent->v.frame);
		if (bits & U_COLORMAP) MSG_WriteByte (msg, ent->v.colormap);
		if (bits & U_SKIN) MSG_WriteByte (msg, ent->v.skin);
		if (bits & U_EFFECTS) MSG_WriteByte (msg, ent->v.effects);
		if (bits & U_ORIGIN1) MSG_WriteCoord (msg, ent->v.origin[0]);
		if (bits & U_ANGLE1)
		{
			if (sv.protocol == PROTOCOL_FITZQUAKE_PLUS)
				MSG_WriteAngle16(msg, ent->v.angles[0]);
			else
				MSG_WriteAngle(msg, ent->v.angles[0]);
		}
		if (bits & U_ORIGIN2) MSG_WriteCoord (msg, ent->v.origin[1]);
		if (bits & U_ANGLE2)
		{
			if (sv.protocol == PROTOCOL_FITZQUAKE_PLUS)
				MSG_WriteAngle16(msg, ent->v.angles[1]);
			else
				MSG_WriteAngle(msg, ent->v.angles[1]);
		}
		if (bits & U_ORIGIN3) MSG_WriteCoord (msg, ent->v.origin[2]);
		if (bits & U_ANGLE3)
		{
			if (sv.protocol == PROTOCOL_FITZQUAKE_PLUS)
				MSG_WriteAngle16(msg, ent->v.angles[2]);
			else
				MSG_WriteAngle(msg, ent->v.angles[2]);
		}

		//johnfitz -- PROTOCOL_FITZQUAKE
		if (bits & U_ALPHA) MSG_WriteByte(msg, ent_alpha);
		if (bits & U_FRAME2) MSG_WriteByte(msg, (int)ent->v.frame >> 8);
		if (bits & U_MODEL2) MSG_WriteByte(msg, (int)ent->v.modelindex >> 8);
		if (bits & U_LERPFINISH) MSG_WriteByte(msg, (byte)(c_rint((ent->v.nextthink - sv.time) * 255)));
		//johnfitz
	}

	//johnfitz -- devstats
stats:
	if (msg->cursize > MAX_WINQUAKE_DATAGRAM /*1024*/ && dev_peakstats.packetsize <= MAX_WINQUAKE_DATAGRAM /*1024*/)
		Con_DWarningLine ("%d byte packet exceeds standard limit of %d.", msg->cursize, MAX_WINQUAKE_DATAGRAM /*1024*/);
	dev_stats.packetsize = msg->cursize;
	dev_peakstats.packetsize = c_max(msg->cursize, dev_peakstats.packetsize);
	//johnfitz
}

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

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

	ent = NEXT_EDICT(sv.edicts);

	for (e = 1 ; e < sv.num_edicts ; e++, ent = NEXT_EDICT(ent))
	{
		ent->v.effects = (int)ent->v.effects & ~EF_MUZZLEFLASH;
	}

}

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

==================
*/
// Literally write the information ONLY about current player to that player.  Called by Host_Spawn_f and SV_SendClientDatagram.
void SV_WriteClientdataToMessage (edict_t *ent, sizebuf_t *msg)
{
	int		bits;
	int		i;
	edict_t	*other;
	int		items;
	eval_t	*val;
	int		entnum = NUM_FOR_EDICT(ent);	// Since ent is a client, it is always a player slot #
	unsigned char ent_alpha = ent->alpha;

	// Coop protection possibly override ent_alpha
	if (svs.clients[entnum - 1].coop_protect_end_time) {
		// If progs for some reason has player already alphaed, that's just tough cookies but bloody unlikely.
		float pct0	= (svs.clients[entnum - 1].coop_protect_end_time - sv.time) / COOP_PROTECT_INTERVAL_5_0;
		float pct1 = 1 - CLAMP(0, pct0, 1);
		float pct  = CLAMP( (1/128.0), pct1, 1);
		ent_alpha = ENTALPHA_ENCODE (pct); // Right?
	} 


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

		ent->v.dmg_take = 0;
		ent->v.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->v.fixangle )
	{
		MSG_WriteByte (msg, svc_setangle);

		MSG_WriteAngle (msg, ent->v.angles[0] );
		MSG_WriteAngle (msg, ent->v.angles[1] );
		MSG_WriteAngle (msg, ent->v.angles[2] );

		ent->v.fixangle = 0;
	}

	bits = 0;

	if (ent->v.view_ofs[2] != DEFAULT_VIEWHEIGHT) bits |= SU_VIEWHEIGHT;
	if (ent->v.idealpitch) bits |= SU_IDEALPITCH;

// stuff the sigil bits into the high bits of items for sbar, or else
// mix in items2
	val = GETEDICTFIELDVALUE(ent, eval_items2);

	if (val)
		items = (int)ent->v.items | ((int)val->_float << 23);
	else items = (int)ent->v.items | ((int)pr_global_struct->serverflags << 28);

	bits |= SU_ITEMS;

	if ( (int)ent->v.flags & FL_ONGROUND)
		bits |= SU_ONGROUND;

	if ( ent->v.waterlevel >= 2)
		bits |= SU_INWATER;

	for (i=0 ; i<3 ; i++)
	{
		if (ent->v.punchangle[i]) bits |= (SU_PUNCH1<<i);
		if (ent->v.velocity[i]) bits |= (SU_VELOCITY1<<i);
	}

	if (ent->v.weaponframe) bits |= SU_WEAPONFRAME;
	if (ent->v.armorvalue) bits |= SU_ARMOR;

//	if (ent->v.weapon)
		bits |= SU_WEAPON;

	//johnfitz -- PROTOCOL_FITZQUAKE
	if (sv.protocol != PROTOCOL_NETQUAKE)
	{
		if (bits & SU_WEAPON && SV_ModelIndex(PR_GetString(ent->v.weaponmodel)) & 0xFF00) bits |= SU_WEAPON2;
		if ((int)ent->v.armorvalue & 0xFF00) bits |= SU_ARMOR2;
		if ((int)ent->v.currentammo & 0xFF00) bits |= SU_AMMO2;
		if ((int)ent->v.ammo_shells & 0xFF00) bits |= SU_SHELLS2;
		if ((int)ent->v.ammo_nails & 0xFF00) bits |= SU_NAILS2;
		if ((int)ent->v.ammo_rockets & 0xFF00) bits |= SU_ROCKETS2;
		if ((int)ent->v.ammo_cells & 0xFF00) bits |= SU_CELLS2;
		if (bits & SU_WEAPONFRAME && (int)ent->v.weaponframe & 0xFF00) bits |= SU_WEAPONFRAME2;
		if (bits & SU_WEAPON && ent_alpha != ENTALPHA_DEFAULT) bits |= SU_WEAPONALPHA; //for now, weaponalpha = client entity alpha
		if (bits >= 65536) bits |= SU_EXTEND1;
		if (bits >= 16777216) bits |= SU_EXTEND2;
	}

	//johnfitz

// send the data

	MSG_WriteByte (msg, svc_clientdata);
	MSG_WriteShort (msg, bits);

	//johnfitz -- PROTOCOL_FITZQUAKE
	if (bits & SU_EXTEND1) MSG_WriteByte(msg, bits>>16);
	if (bits & SU_EXTEND2) MSG_WriteByte(msg, bits>>24);

	//johnfitz

	if (bits & SU_VIEWHEIGHT) MSG_WriteChar (msg, ent->v.view_ofs[2]);
	if (bits & SU_IDEALPITCH) MSG_WriteChar (msg, ent->v.idealpitch);

	for (i=0 ; i<3 ; i++)
	{
		if (bits & (SU_PUNCH1<<i)) MSG_WriteChar (msg, ent->v.punchangle[i]);
		if (bits & (SU_VELOCITY1<<i)) MSG_WriteChar (msg, ent->v.velocity[i]/16);
	}

// [always sent]	if (bits & SU_ITEMS)
	MSG_WriteLong (msg, items);

	if (bits & SU_WEAPONFRAME) MSG_WriteByte (msg, ent->v.weaponframe);
	if (bits & SU_ARMOR) MSG_WriteByte (msg, ent->v.armorvalue);
	if (bits & SU_WEAPON) MSG_WriteByte (msg, SV_ModelIndex(PR_GetString(ent->v.weaponmodel)));

	MSG_WriteShort (msg, ent->v.health);
	MSG_WriteByte (msg, ent->v.currentammo);
	MSG_WriteByte (msg, ent->v.ammo_shells);
	MSG_WriteByte (msg, ent->v.ammo_nails);
	MSG_WriteByte (msg, ent->v.ammo_rockets);
	MSG_WriteByte (msg, ent->v.ammo_cells);

	// Baker: If hipnotic or rogue, written message varies (hipnotic, rogue)
#pragma message ("JoeQuake: ONLY rogue or hipnotic.  Not Nehahra!!!!")
	switch (com_gametype)
	{
	case gametype_hipnotic:
	case gametype_quoth:
	case gametype_rogue:
		for (i = 0; i < INT32_BITCOUNT_32; i++)
		{
			if ( ((int)ent->v.weapon) & (1<<i) )
			{
				MSG_WriteByte (msg, i);
				break;
			}
		}
		break;

	default: // standard quake, nehahra, ...
		MSG_WriteByte (msg, ent->v.weapon);
		break;
	}

	//johnfitz -- PROTOCOL_FITZQUAKE
	if (bits & SU_WEAPON2) MSG_WriteByte (msg, SV_ModelIndex(PR_GetString(ent->v.weaponmodel)) >> 8);
	if (bits & SU_ARMOR2) MSG_WriteByte (msg, (int)ent->v.armorvalue >> 8);
	if (bits & SU_AMMO2) MSG_WriteByte (msg, (int)ent->v.currentammo >> 8);
	if (bits & SU_SHELLS2) MSG_WriteByte (msg, (int)ent->v.ammo_shells >> 8);
	if (bits & SU_NAILS2) MSG_WriteByte (msg, (int)ent->v.ammo_nails >> 8);
	if (bits & SU_ROCKETS2) MSG_WriteByte (msg, (int)ent->v.ammo_rockets >> 8);
	if (bits & SU_CELLS2) MSG_WriteByte (msg, (int)ent->v.ammo_cells >> 8);
	if (bits & SU_WEAPONFRAME2) MSG_WriteByte (msg, (int)ent->v.weaponframe >> 8);
	if (bits & SU_WEAPONALPHA) MSG_WriteByte (msg, ent_alpha); //for now, weaponalpha = client entity alpha
	//johnfitz
}

/*
=======================
SV_SendClientDatagram
=======================
*/
cbool SV_SendClientDatagram (client_t *client)
{
	byte		buf[MAX_MARK_V_DATAGRAM];
	sizebuf_t	msg;

	msg.data = buf;
#ifdef SUPPORTS_SERVER_PROTOCOL_15
	msg.maxsize = host_protocol_datagram_maxsize;
#endif // SUPPORTS_SERVER_PROTOCOL_15
	msg.cursize = 0;

	//johnfitz

	MSG_WriteByte (&msg, svc_time);
	MSG_WriteFloat (&msg, sv.time);

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

	SV_WriteEntitiesToClient (client->edict, &msg);

// copy the server datagram if there is space
	if (msg.cursize + sv.datagram.cursize < msg.maxsize)
		SZ_Write (&msg, sv.datagram.data, sv.datagram.cursize);

// send the datagram
	if (NET_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;

// check for changes to be sent over the reliable streams
	for (i = 0, host_client = svs.clients ; i < svs.maxclients_internal ; i++, host_client++)  // Because the cap can change at any time now.
	{
		if (host_client->old_frags != host_client->edict->v.frags)
		{
			for (j = 0, client = svs.clients ; j < svs.maxclients_internal; j++, client++)  // Because the cap can change at any time now.
			{
				if (!client->active)
					continue;

				MSG_WriteByte (&client->message, svc_updatefrags);
				MSG_WriteByte (&client->message, i);
				MSG_WriteShort (&client->message, host_client->edict->v.frags);
			}

			host_client->old_frags = host_client->edict->v.frags;
		}
	}

	for (j = 0, client = svs.clients ; j < svs.maxclients_internal ; j++, client++)  // Because the cap can change at any time now.
	{
		if (!client->active)
			continue;

		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;
	byte		buf[4];

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

	MSG_WriteChar (&msg, svc_nop);

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

	client->last_message = realtime;
}

/*
=======================
SV_SendClientMessages
=======================
*/
static void SV_Host_Frame_UpdateServer_SendClientMessages (void)
{
	int			i;

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

// build individual updates
	for (i = 0, host_client = svs.clients; i < svs.maxclients_internal; i++, host_client++) // Because the cap can change at any time now.
	{
		if (!host_client->active)
			continue;

		if (host_client->spawned)
		{
			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
			}
		}

		// check for an overflowed message.  Should only happen
		// on a very fucked up connection that backs up a lot, then
		// changes level
		if (host_client->message.overflowed)
		{
			SV_DropClient (true);
			host_client->message.overflowed = false;
			continue;
		}

		if (host_client->message.cursize || host_client->dropasap)
		{
			if (!NET_CanSendMessage (host_client->netconnection))
			{
//				I_Printf ("can't write\n");
				continue;
			}

			if (host_client->dropasap)
			{
				SV_DropClient (false);	// went to another level
			}
			else
			{
				if (NET_SendMessage (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 ();
}


void SV_Autosave_Think (void)
{
	if (!sv_autosave.value)
		return;

	if (isDedicated)
		return;

	if (!sv.active)
		return;

	// Determine if auto-save should occur
//#pragma comment("Baker: I disagree with this next line for a very technical reason.   A listen server with maxplayers = 1 can it load saves?  I think not.")
//#pragma comment ("Baker: But it's not very important")
	// Should be svs.listening ?
	if (svs.maxclients_internal > 1) // Because the cap can change at any time now.  But 1 is still special for internal and means single player.
		return;

	// Yuck, client variable.
	if (cls.state != ca_connected)
		return;

	// Don't rush to auto-save on starting a map.
	if (sv.time < sv.auto_save_time)
		return;

	// Baker: Yuck!  A client variable, but the server doesn't seem to know.
	// And I'm not messing around trying to find out what bytes a progs is sending.
	// Besides, right now we can't load multiplayer save games yet.
	if (cl.intermission)
		return;

	// Dead
	if (svs.clients[0].edict->v.health <= 0)
		return;

	
/*
	// Baker: What if map is so hard you have to godmode it.
	// If in a cheat-mode, why bother.
	if (((int)svs.clients[0].edict->v.flags & FL_GODMODE) ||
		((int)svs.clients[0].edict->v.flags & FL_NOTARGET) ||
		svs.clients[0].edict->v.movetype == MOVETYPE_NOCLIP || sv.frozen)
	{
//		Con_PrintLinef ("Didn't autosave because of a cheat");
		return;
	}
*/

	// Rename old ones
	{
		char autosave2[MAX_OSPATH];
		char autosave1[MAX_OSPATH];
		char autosave0[MAX_OSPATH];
		int checkit;
#define AUTOSAVE_BASENAME "auto_save_"
		FS_FullPath_From_QPath (autosave2, AUTOSAVE_BASENAME "2.sav");
		FS_FullPath_From_QPath (autosave1, AUTOSAVE_BASENAME "1.sav");
		FS_FullPath_From_QPath (autosave0, AUTOSAVE_BASENAME "0.sav");

		if (File_Exists (autosave2))
			checkit = File_Delete (autosave2);
		if (File_Exists (autosave1))
			checkit = File_Rename (autosave1, autosave2);
		if (File_Exists (autosave0))
			checkit = File_Rename (autosave0, autosave1);
	}

	Host_Savegame (AUTOSAVE_BASENAME "0", false);
	Con_DPrintLinef ("Autosaved %d:%02d", Time_Minutes((int)sv.time), Time_Seconds((int)sv.time) );

	// Set the next auto save time
	sv.auto_save_time = sv.time + AUTO_SAVE_INTERVAL;
}

/*
==================
Host_ServerFrame
==================
*/
void SV_Host_Frame_UpdateServer (double frametime)
{

// run the world state
	pr_global_struct->frametime = frametime;

// set the time and clear the general datagram
	SV_Host_Frame_UpdateServer_ClearDatagram ();

// check for new clients
	SV_Host_Frame_UpdateServer_CheckForNewClients ();

// read client messages
	SV_Host_Frame_RunClients (frametime); // SV_RunClients is exclusively called by us.

// move things around and think
// always pause in single player if in console or menus
	if (!sv.paused && (svs.maxclients_internal > 1 || key_dest == key_game) ) // Because the cap can change at any time now.  1 still means single player.
	{
		SV_Physics (frametime);
		SV_Autosave_Think ();
	}

//johnfitz -- devstats
	if (cls.signon == SIGNONS)
	{
		int		i, active; //johnfitz
		edict_t	*ent; //johnfitz

		for (i=0, active=0; i < sv.num_edicts; i++)
		{
			ent = EDICT_NUM(i);
			if (!ent->free)
				active++;
		}
		if (active > MAX_WINQUAKE_EDICTS && dev_peakstats.edicts <= MAX_WINQUAKE_EDICTS)
			Con_DWarningLine ("%d edicts exceeds standard limit of %d.", active, MAX_WINQUAKE_EDICTS); // 600
		dev_stats.edicts = active;
		dev_peakstats.edicts = c_max(active, dev_peakstats.edicts);
	}
//johnfitz

// send all messages to the clients
	SV_Host_Frame_UpdateServer_SendClientMessages ();
}


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

SERVER SPAWNING

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

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

================
*/
int SV_ModelIndex (const char *name)
{
	int		i;

	if (!name || !name[0])
		return 0;

	for (i=0 ; i < MAX_FITZQUAKE_MODELS && sv.model_precache[i] ; i++)
		if (!strcmp(sv.model_precache[i], name))
			return i;

	if (i==MAX_FITZQUAKE_MODELS || !sv.model_precache[i])
		Host_Error ("SV_ModelIndex: model %s not precached", name);

	return i;
}

/*
================
SV_CreateBaseline
================
*/
void SV_CreateBaseline (void)
{
	edict_t		*svent;
	int			entnum;
	int			bits; //johnfitz -- PROTOCOL_FITZQUAKE

	for (entnum = 0; entnum < sv.num_edicts ; entnum++)
	{
	// get the current server version
		svent = EDICT_NUM(entnum);

		if (svent->free) continue;
		if (entnum > svs.maxclients_internal && !svent->v.modelindex) continue; // Because the cap can change at any time now.

	//
	// create entity baseline
	//
		VectorCopy (svent->v.origin, svent->baseline.origin);
		VectorCopy (svent->v.angles, svent->baseline.angles);
		svent->baseline.frame = svent->v.frame;
		svent->baseline.skin = svent->v.skin;

		if (entnum > 0 && entnum <= svs.maxclients_internal) // Because the cap can change at any time now.
		{
			svent->baseline.colormap = entnum;
			svent->baseline.modelindex = SV_ModelIndex("progs/player.mdl");
			svent->baseline.alpha = ENTALPHA_DEFAULT; //johnfitz -- alpha support
		}
		else
		{
			svent->baseline.colormap = 0;
			svent->baseline.modelindex = SV_ModelIndex(PR_GetString(svent->v.model));
			svent->baseline.alpha = svent->alpha; //johnfitz -- alpha support
		}

		//johnfitz -- PROTOCOL_FITZQUAKE
		bits = 0;

		if (sv.protocol == PROTOCOL_NETQUAKE) //still want to send baseline in PROTOCOL_NETQUAKE, so reset these values
		{
			if (svent->baseline.modelindex & 0xFF00) svent->baseline.modelindex = 0;
			if (svent->baseline.frame & 0xFF00) svent->baseline.frame = 0;

			svent->baseline.alpha = ENTALPHA_DEFAULT;
		}
		else //decide which extra data needs to be sent
		{
			if (svent->baseline.modelindex & 0xFF00) bits |= B_LARGEMODEL;
			if (svent->baseline.frame & 0xFF00) bits |= B_LARGEFRAME;
			if (svent->baseline.alpha != ENTALPHA_DEFAULT) bits |= B_ALPHA;
		}
		//johnfitz

	//
	// add to the message
	//
		//johnfitz -- PROTOCOL_FITZQUAKE
		if (bits)
			MSG_WriteByte (&sv.signon, svc_spawnbaseline2);
		else MSG_WriteByte (&sv.signon, svc_spawnbaseline);
		//johnfitz

		MSG_WriteShort (&sv.signon,entnum);

		//johnfitz -- PROTOCOL_FITZQUAKE
		if (bits) MSG_WriteByte (&sv.signon, bits);

		if (bits & B_LARGEMODEL)
			MSG_WriteShort (&sv.signon, svent->baseline.modelindex);
		else MSG_WriteByte (&sv.signon, svent->baseline.modelindex);

		if (bits & B_LARGEFRAME)
			MSG_WriteShort (&sv.signon, svent->baseline.frame);
		else MSG_WriteByte (&sv.signon, svent->baseline.frame);
		//johnfitz

		MSG_WriteByte (&sv.signon, svent->baseline.colormap);
		MSG_WriteByte (&sv.signon, svent->baseline.skin);

		MSG_WriteCoord(&sv.signon, svent->baseline.origin[0]);
		MSG_WriteAngle(&sv.signon, svent->baseline.angles[0]);
		MSG_WriteCoord(&sv.signon, svent->baseline.origin[1]);
		MSG_WriteAngle(&sv.signon, svent->baseline.angles[1]);
		MSG_WriteCoord(&sv.signon, svent->baseline.origin[2]);
		MSG_WriteAngle(&sv.signon, svent->baseline.angles[2]);


		//johnfitz -- PROTOCOL_FITZQUAKE
		if (bits & B_ALPHA) MSG_WriteByte (&sv.signon, svent->baseline.alpha);
		//johnfitz
	}
}


/*
================
SV_SendReconnect

Tell all the clients that the server is changing levels
================
*/
void SV_SendReconnect (void)
{
	byte	data[128];
	sizebuf_t	msg;

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

	MSG_WriteChar (&msg, svc_stufftext);
	MSG_WriteString (&msg, "reconnect" NEWLINE);
	NET_SendToAll (&msg, 5.0);

	if (!isDedicated)
		Cmd_ExecuteString ("reconnect" NEWLINE, src_command); // I do not believe the newline is required.
}


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

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

	svs.serverflags = pr_global_struct->serverflags;

	for (i = 0, host_client = svs.clients; i < svs.maxclients_internal; i++, host_client ++) // Because the cap can change at any time now.
	{
		if (!host_client->active)
			continue;

	// call the progs to get default spawn parms for the new client
		pr_global_struct->self = EDICT_TO_PROG(host_client->edict);
		PR_ExecuteProgram (pr_global_struct->SetChangeParms);
		for (j=0 ; j<NUM_SPAWN_PARMS ; j++)
			host_client->spawn_parms[j] = (&pr_global_struct->parm1)[j];
	}
}


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

This is called at the start of each level
================
*/
typedef struct
{
	const char *modelname;			// "maps/e1m1.bsp"
	const char *checkstring;		// This string must be found in the entities (i.e. the problem to address)
	const char *patch_before_this;	// Insert before this text
	const char *patch;				// The "FIX"
} map_patches_t;

map_patches_t map_patches[] =
{
	{	"maps/apsp1.bsp",
		"{\n\"classname\" \"func_door\"\n\"targetname\" \"t4\"\n\"angle\" \"-2\"\n\"spawnflags\" \"1\"\n\"sounds\" \"2\"\n\"model\" \"*15\"\n}",
		"\"model\" \"*15\"",
		"\"lip\" \"-4\"\n\"origin\" \"0 0 -2\"\n"
	},

	{	"maps/e1m1.bsp",
		"{\n\"classname\" \"func_door\"\n\"targetname\" \"t4\"\n\"angle\" \"-2\"\n\"spawnflags\" \"1\"\n\"sounds\" \"2\"\n\"model\" \"*15\"\n}",
		"\"model\" \"*15\"",
		"\"lip\" \"-4\"\n\"origin\" \"0 0 -2\"\n"
	},

	{
		"maps/e1m2.bsp",
		"{\n\"sounds\" \"3\"\n\"classname\" \"func_door\"\n\"angle\" \"270\"\n\"wait\" \"-1\"\n\"model\" \"*34\"\n}\n",
		"\"model\" \"*34\"",
		"\"origin\" \"-3 0 0\"\n"
	},

	{
		"maps/e1m2.bsp",
		"{\n\"classname\" \"func_door\"\n\"angle\" \"90\"\n\"targetname\" \"t110\"\n\"wait\" \"-1\"\n\"model\" \"*33\"\n}\n",
		"\"model\" \"*33\"",
		"\"origin\" \"-3 0 0\"\n"
	},
	{ NULL }, // Terminator
};

static char *MapPatch (const char *modelname, char *entstring)
{
	char *patched_entstring = NULL;
	char *insertion_point;

	map_patches_t* map_patch;

	Con_DPrintLinef ("Map patch check");
	for (map_patch = &map_patches[0]; map_patch->modelname; map_patch++)
	{
		if (strcasecmp (map_patch->modelname, modelname) != 0)
			continue; // Model name doesn't match

		if (strstr (entstring, map_patch->checkstring) == NULL)
			continue;

		insertion_point = strstr (entstring, map_patch->patch_before_this);

		if (insertion_point)
		{
			// Perform the operation
			int entstrlen = strlen (entstring);
			int patchstrlen = strlen (map_patch->patch);
			int newbufsize = entstrlen + patchstrlen + 1; // +1 for null term

			char *newbuf = malloc ( newbufsize);
			char temp = insertion_point[0];

			insertion_point[0] = 0;

		strlcpy (newbuf, entstring, newbufsize);
		strlcat (newbuf, map_patch->patch, newbufsize);
		insertion_point[0] = temp;
		strlcat (newbuf, insertion_point, newbufsize);

			// Already did one patch so free before replacing
			if (patched_entstring)
				free (patched_entstring);

			entstring = patched_entstring = newbuf;
//			Con_DPrintLinef ("Patch performed");
		}
	}

	return patched_entstring;
}

char *entity_string = NULL;

void SV_SpawnServer (const char *server)
{
	edict_t		*ent;
	int			i;

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

	Con_DPrintLinef ("SpawnServer: %s",server);
	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_SendReconnect ();

// make cvars consistent
	if (pr_coop.value) Cvar_SetValueQuick (&pr_deathmatch, 0);

// set up the new server
	Host_ClearMemory ();

	//memset (&sv, 0, sizeof(sv)); // Baker: Host_ClearMemory does this

// Baker: Clear level information prior to loading world.
	memset (&level, 0, sizeof(level));

	// Baker: These have to be done after Host_ClearMemory because sv gets cleared
	c_strlcpy (sv.name, server);
	sv.disallow_major_cheats = sv_cheats.value <= 0;	// sv_cheats 0 or -1 disallow major cheats (god, noclip, fly, notarget)
	sv.disallow_minor_cheats = !sv_cheats.value;		// sv_cheats -1 allows "give" because some coop maps supply too little ammo/health
	sv.current_skill = (int)(pr_skill.value + 0.5);
	sv.current_skill = CLAMP (0, sv.current_skill, 3);
	sv.use_old_setmodel = sv_fix_setmodelrealbox.value ? false : true; // Opposite of whether or not to use the real.

	sv.fileserver_port = 0;
	if (isDedicated || svs.maxclients_internal > 1) // Because the cap can change at any time now.  But 1 still is special and means single player.
		if (sv_fileserver_port.string[0] == '+') 
			sv.fileserver_port = net_hostport + atoi (&sv_fileserver_port.string[0]);
		else sv.fileserver_port = (int)sv_fileserver_port.value;

	sv.protocol = sv_protocol; // johnfitz

// Construct the hint strings now that we know the skill level
	SV_HintStrings_NewMap ();

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

// allocate server memory


#ifdef SUPPORTS_SERVER_PROTOCOL_15
	switch (sv_protocol)
	{
	case PROTOCOL_NETQUAKE:
		//sv.datagram.maxsize = sv_protocol == sizeof(sv.datagram_buf); // Baker: Was unused
		sv.datagram.maxsize			 = MAX_WINQUAKE_DATAGRAM		/* 1024 */ ;
		sv.signon.maxsize			 = MAX_WINQUAKE_SIGNON;			// 8000 - 2 = 7998
		break;

	case PROTOCOL_FITZQUAKE:
	case PROTOCOL_FITZQUAKE_PLUS:
		if (svs.maxclients_internal == 1 && !isDedicated) // Because the cap can change at any time now.  But 1 still means single player.
			sv.datagram.maxsize		 = MAX_MARK_V_DATAGRAM			/* 65527 */ ;
		else sv.datagram.maxsize	 = MAX_FITZQUAKE_DATAGRAM_MTU	/* 1400 */ ;
		sv.signon.maxsize			 = MAX_MARK_V_SIGNON;			// 65536-2  = 65534
		break;
	}

#if 0
	Con_PrintLinef ("sv.datagram.maxsize is %d", sv.datagram.maxsize);
	Con_PrintLinef ("sv.signon.maxsize is %d", sv.signon.maxsize);
	Con_PrintLinef ("sv_protocol is %d", sv_protocol);
#endif
	sv.datagram.cursize = 0;
	sv.datagram.data = sv.datagram_buf;

	host_protocol_datagram_maxsize =  // continued ...
	sv.reliable_datagram.maxsize = sv.datagram.maxsize;
	sv.reliable_datagram.cursize = 0;
	sv.reliable_datagram.data = sv.reliable_datagram_buf;
#endif // SUPPORTS_SERVER_PROTOCOL_15
	sv.signon.cursize = 0;
	sv.signon.data = sv.signon_buf;


	c_strlcpy (sv.name, server);
	c_snprintf1 (sv.modelname, "maps/%s.bsp", server);
	sv.worldmodel = Mod_ForName (sv.modelname, false);
	if (!sv.worldmodel || sv.worldmodel->type != mod_brush) // Spike added: sv.worldmodel->type != mod_brush
	{
		// Baker: This is a rather irregular way for the server to be shutdown.
		// It is sort of a "CL_Disconnect lite".  Doesn't stop demo recording, although
		// I'm not sure it should.  My guess is yes.
		// In single player, this isn't setting ca_disconnected or signons to 0.
		// Isn't setting key_dest to console.
#pragma message ("This sv map not found couldn't spawn server needs love")
		Con_PrintLinef ("Couldn't spawn server %s", sv.modelname);
		SCR_EndLoadingPlaque (); // Baker: any disconnect state should end the loading plague, right?
		sv.active = false;
		return;
	}




// Read entity_string from memory
	{
		int mark = Hunk_LowMark ();
		char *patched;

		entity_string = sv.worldmodel->entities; // Point it to the standard entities string

		patched = MapPatch(sv.modelname, entity_string);
		if (patched)
		{
			Hunk_FreeToLowMark (mark);
			entity_string = Hunk_Strdup (patched, "ent patch string");

			free (patched);
			Con_DPrintLinef ("Map entity string patched.");
		}
	}


// determine max edicts to use
	switch (sv_protocol)
	{
	case PROTOCOL_NETQUAKE:
		sv.max_edicts = MAX_WINQUAKE_EDICTS;
		break;

	case PROTOCOL_FITZQUAKE:
	case PROTOCOL_FITZQUAKE_PLUS:
		sv.max_edicts = MAX_SANE_EDICTS_8192;
		
#if 0 // Goodbye to guessing ...
		{
			int classname_count = String_Count_String (entity_string, "classname");
			int	predicted_count = classname_count * 1.5;

			Con_DPrintLinef ("MAX_EDICTS: Predict %d on classname count of %d", predicted_count, classname_count);

			if (host_max_edicts.value < 0) // -2048 = force 2048 max_edicts
				sv.max_edicts = abs(host_max_edicts.value);
			else if (host_max_edicts.value == 0 || host_max_edicts.value < predicted_count)
			{
				sv.max_edicts = predicted_count;
				Con_DPrintLinef ("Setting server edicts maximum to %d edicts on classname count of %d", sv.max_edicts, classname_count);
			}
			else sv.max_edicts = host_max_edicts.value;
			sv.max_edicts = CLAMP(MIN_SANE_EDICTS_512, sv.max_edicts, MAX_SANE_EDICTS_8192);
			Con_DPrintLinef ("MAX_EDICTS: After clamp, server edicts set %d edicts", sv.max_edicts);
		}
#endif
		break;
	}

// allocate the memory
	sv.edicts = Hunk_AllocName (sv.max_edicts * pr_edict_size, "edicts");

// leave slots at start for clients only
	sv.num_edicts = svs.maxclients_internal + 1; // Because the cap can change at any time now.
	for (i = 0 ; i < svs.maxclients_internal; i++) // Because the cap can change at any time now.
	{
		ent = EDICT_NUM(i+1);
		svs.clients[i].edict = ent;
	}

	sv.state = ss_loading;
	sv.paused = false;
	sv.time = 1.0;
	sv.models[1] = sv.worldmodel;

// clear world interaction links
	SV_ClearWorld ();

	sv.sound_precache[0] = pr_strings;
	sv.model_precache[0] = pr_strings;
	sv.model_precache[1] = sv.modelname;

	for (i = 1 ; i < sv.worldmodel->numsubmodels ; i++)
	{
		if (i >= MAX_FITZQUAKE_MODELS)
			Host_Error ("World submodels > MAX_FITZQUAKE_MODELS (%d)", MAX_FITZQUAKE_MODELS);

		if (sv.protocol == PROTOCOL_NETQUAKE && i >= MAX_WINQUAKE_MODELS)
			Host_Error ("Too many models for protocol 15, limit %d", MAX_WINQUAKE_MODELS);

		sv.model_precache[i + 1] = localmodels[i];
		sv.models[i+1] = Mod_ForName (localmodels[i], false);
	}

// load the rest of the entities
	ent = EDICT_NUM(0);
	memset (&ent->v, 0, progs->entityfields * 4);
	ent->free = false;
	ent->v.model = PR_SetEngineString(sv.worldmodel->name);
	ent->v.modelindex = 1;		// world model
	ent->v.solid = SOLID_BSP;
	ent->v.movetype = MOVETYPE_PUSH;

	// these are needed here so that we can filter edicts in or out depending on the game type
	if (pr_coop.value)
		pr_global_struct->coop = pr_coop.value;
	else pr_global_struct->deathmatch = pr_deathmatch.value;

	sv.level_coop_enhanced = /*svs.listening &&*/ pr_global_struct->coop && vm_coop_enhancements.value;

	pr_global_struct->mapname = PR_SetEngineString(sv.name);

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

	ED_LoadFromFile (entity_string); // Baker loads from memory, not file.

	sv.active = true;

	// Baker: If a game is loading, this will get set again after real sv.time is set.
	sv.auto_save_time = sv.time + AUTO_SAVE_MINIMUM_TIME;

// all setup is completed, any further precache statements are errors
	sv.state = ss_active;

// run two frames to allow everything to settle
	SV_Physics (0.1); // frame 1
	SV_Physics (0.1); // frame 2

// create a baseline for more efficient communications
	SV_CreateBaseline ();
	Admin_Game_Files_List_Update_Server ();
	//johnfitz -- warn if signon buffer larger than standard server can handle
//	Con_PrintLinef ("Signon size is %d", sv.signon.cursize);
	if (sv.signon.cursize > (MAX_WINQUAKE_MSGLEN /*8000*/ - 2) ) //max size that will fit into 8000-sized client->message buffer with 2 extra bytes on the end
//		Con_DWarningLine ("%d byte signon buffer exceeds standard limit of 7998.", sv.signon.cursize);
		Con_DWarningLine ("%d byte signon buffer exceeds standard limit of %d.", sv.signon.cursize, (MAX_WINQUAKE_MSGLEN /*8000*/ -2 ));
	//johnfitz

// send serverinfo to all connected clients
	for (i = 0, host_client = svs.clients ; i < svs.maxclients_internal; i++, host_client++) // Because the cap can change at any time now.
		if (host_client->active)
			SV_SendServerinfo (host_client);

	Con_DPrintLinef ("Server spawned.");
	in_load_game = false;
}