/*
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"

server_t    sv;
server_static_t   svs;

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

int sv_protocol = PROTOCOL_FITZQUAKE; //johnfitz
cvar_t  sv_loadentfiles = {"sv_loadentfiles","1", true, false, "Attempt to load external *.ent files if they exist."}; /* FS: Load external ent files */

 /* FS: Gamespy Stuff */
cvar_t	sv_master_server_ip = {"sv_master_server_ip", SV_MASTER_ADDR, true, false, "GameSpy Master Server IP for dedicated servers."};
cvar_t	sv_master_server_port = {"sv_master_server_port", SV_MASTER_PORT, true, false, "GameSpy Master Server Port for dedicated servers."}; 
cvar_t	public_server = {"public", "0", false, false, "Report server to a master server."};

extern qboolean		pr_alpha_supported; //johnfitz

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

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

	switch (Cmd_Argc())
	{
	case 1:
		Con_Printf ("\"sv_protocol\" is \"%i\"\n", sv_protocol);
		break;
	case 2:
		i = atoi(Cmd_Argv(1));

		if (i != PROTOCOL_NETQUAKE && i != PROTOCOL_FITZQUAKE)
			Con_Printf ("sv_protocol must be %i or %i\n", PROTOCOL_NETQUAKE, PROTOCOL_FITZQUAKE);
		else
		{
			sv_protocol = i;

			if (sv.active)
				Con_Printf ("changes will not take effect until the next level load.\n");
		}

		break;
	default:
		Con_SafePrintf ("usage: sv_protocol <protocol>\n");
		break;
	}
}

/* FS: Dump Entities */
void SV_DumpEntities_f (void)
{
	FILE	*f;
	char	filename[MAX_OSPATH];

	Com_sprintf(filename, sizeof(filename), "%s/maps/%s.ent", com_gamedir, sv.name);

	f = fopen (filename, "w");

	if (!f)
	{
		Con_Warning ("Couldn't open %s for writing.\n", filename);
		return;
	}

	Con_Printf ("Dumping Entities to %s.\n", filename);
	fputs(sv.worldmodel->entities, f);
	fclose(f);
}

/*
===============
SV_Init
===============
*/
void SV_Init (void)
{
	int		i;
	extern	cvar_t	sv_maxvelocity;
	extern	cvar_t	sv_gravity;
	extern	cvar_t	sv_nostep;
	extern	cvar_t	sv_friction;
	extern	cvar_t	sv_edgefriction;
	extern	cvar_t	sv_stopspeed;
	extern	cvar_t	sv_maxspeed;
	extern	cvar_t	sv_accelerate;
	extern	cvar_t	sv_idealpitchscale;
	extern	cvar_t	sv_aim;
	extern	cvar_t	sv_altnoclip; //johnfitz

	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_accelerate);
	Cvar_RegisterVariable (&sv_idealpitchscale);
	Cvar_RegisterVariable (&sv_aim);
	Cvar_RegisterVariable (&sv_nostep);

	/* FS: New stuff */
	Cvar_RegisterVariable (&pq_fullpitch);
    Cvar_RegisterVariable (&cl_fullpitch);
	Cvar_RegisterVariable (&sv_loadentfiles);
	Cvar_RegisterVariable (&sv_altnoclip); //johnfitz

	/* FS: Gamespy Stuff */
	Cvar_RegisterVariable (&sv_master_server_ip);
	Cvar_RegisterVariable (&sv_master_server_port);
	Cvar_RegisterVariable (&public_server);

	Cmd_AddCommand ("sv_dumpentities", &SV_DumpEntities_f); /* FS: Added */
	Cmd_AddCommand ("sv_protocol", &SV_Protocol_f); //johnfitz

	for (i=0 ; i<MAX_MODELS ; i++)
		sprintf (localmodels[i], "*%i", i);
}

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

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_DATAGRAM-16)
		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
allready 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, char *sample, int volume, float attenuation)
{       
    int	sound_num;
    int field_mask;
    int	i;
	int	ent;
   
	if (volume < 0 || volume > 255)
		Sys_Error ("SV_StartSound: volume = %i", volume);

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

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

	if (sv.datagram.cursize > MAX_DATAGRAM-16)
		return;  

	// find precache number for sound
	for (sound_num=1 ; sound_num<MAX_SOUNDS	&& sv.sound_precache[sound_num] ; sound_num++)
		if (!strcmp(sample, sv.sound_precache[sound_num]))
            break;
    
    if ( sound_num == MAX_SOUNDS || !sv.sound_precache[sound_num] )
    {
        Con_Printf ("SV_StartSound: %s not precacheed\n", 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_SendServerinfo (client_t *client)
{
	char **s;
	char message[2048];
	int i; //johnfitz

	MSG_WriteByte (&client->message, svc_print);
	Com_sprintf (message, sizeof(message), "%c\nVERSION %4.2f SERVER (%i CRC)", 2, VERSION, pr_crc);
	MSG_WriteString (&client->message,message);

	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);

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

	sprintf (message, pr_strings+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));

	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_DPrintf(DEVELOPER_MSG_SERVER, "Client %s connected\n", client->netconnection->address);

	edictnum = clientnum+1;

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

	strcpy (client->name, "unconnected");
	client->active = true;
	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

	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

===================
*/
void SV_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 ; i++)
			if (!svs.clients[i].active)
				break;
		if (i == svs.maxclients)
			Sys_Error ("Host_CheckForNewClients: no free clients");
      
		svs.clients[i].netconnection = ret;
		SV_ConnectClient (i);   
   
		net_activeconnections++;
	}
}

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

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 fatbytes;
byte fatpvs[MAX_MAP_LEAFS/8];

void SV_AddToFatPVS (vec3_t org, mnode_t *node)
{
	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, sv.worldmodel);

				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]);
			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)
{
	fatbytes = (sv.worldmodel->numleafs+31)>>3;
	Q_memset (fatpvs, 0, fatbytes);
	SV_AddToFatPVS (org, sv.worldmodel->nodes);
	return fatpvs;
}

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


/*
=============
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;

	// find the client's PVS
	VectorAdd (clent->v.origin, clent->v.view_ofs, org);
	pvs = SV_FatPVS (org);

	// 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 ALLWAYS sent
		{
			// ignore ents without visible models
			if (!ent->v.modelindex || !pr_strings[ent->v.model])
				continue;

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

			// 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
		}

		//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)
		{
			Con_Printf ("packet overflow\n");
			return;
		}

		// 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
		if (pr_alpha_supported)
		{
			// TODO: find a cleaner place to put this code
			eval_t	*val;
			val = GetEdictFieldValue(ent, "alpha");
			if (val)
				ent->alpha = ENTALPHA_ENCODE(val->_float);
		}

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

		//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)
			MSG_WriteAngle(msg, ent->v.angles[0]);
		if (bits & U_ORIGIN2)
			MSG_WriteCoord (msg, ent->v.origin[1]);
		if (bits & U_ANGLE2)
			MSG_WriteAngle(msg, ent->v.angles[1]);
		if (bits & U_ORIGIN3)
			MSG_WriteCoord (msg, ent->v.origin[2]);
		if (bits & U_ANGLE3)
			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)(Q_rint((ent->v.nextthink-sv.time)*255)));
		//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

==================
*/
void SV_WriteClientdataToMessage (edict_t *ent, sizebuf_t *msg)
{
	int bits;
	int i;
	edict_t *other;
	int items;
	eval_t *val;

	//
	// 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);

		for (i=0 ; i < 3 ; i++)
			MSG_WriteAngle (msg, ent->v.angles[i] );

		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, "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_strings+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_strings+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);

	if (standard_quake)
	{
		MSG_WriteByte (msg, ent->v.weapon);
	}
	else
	{
		for(i=0;i<32;i++)
		{
			if ( ((int)ent->v.weapon) & (1<<i) )
			{
				MSG_WriteByte (msg, i);
				break;
			}
		}
	}

	//johnfitz -- PROTOCOL_FITZQUAKE
	if (bits & SU_WEAPON2)
		MSG_WriteByte (msg, SV_ModelIndex(pr_strings+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
=======================
*/
qboolean SV_SendClientDatagram (client_t *client)
{
	byte buf[MAX_DATAGRAM];
	sizebuf_t msg;
  
	msg.data = buf;
	msg.maxsize = sizeof(buf);
	msg.cursize = 0;

	//johnfitz -- if client is nonlocal, use smaller max size so packets aren't fragmented
	if (Q_strcmp (client->netconnection->address, "LOCAL") != 0)
		msg.maxsize = DATAGRAM_MTU;

	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 ; i++, host_client++)
	{
		if (host_client->old_frags != host_client->edict->v.frags)
		{
			for (j=0, client = svs.clients ; j<svs.maxclients ; j++, client++)
			{
				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 ; j++, client++)
	{
		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
=======================
*/
void SV_SendClientMessages (void)
{
	int i;
   
	// 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->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 ();
}

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

SERVER SPAWNING

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

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

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

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

	for (i=0 ; i<MAX_MODELS && sv.model_precache[i] ; i++)
		if (!strcmp(sv.model_precache[i], name))
			return i;
	if (i==MAX_MODELS || !sv.model_precache[i])
		Sys_Error ("SV_ModelIndex: model %s not precached", name);
	return i;
}

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

================
*/
void SV_CreateBaseline (void)
{
	int i;
	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 && !svent->v.modelindex)
			continue;

		//
		// 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)
		{
			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_strings + 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);
		for (i=0 ; i<3 ; i++)
		{
			MSG_WriteCoord(&sv.signon, svent->baseline.origin[i]);
			MSG_WriteAngle(&sv.signon, svent->baseline.angles[i]);
		}

		//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)
{
	char data[128];
	sizebuf_t msg;

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

	MSG_WriteChar (&msg, svc_stufftext);
	MSG_WriteString (&msg, "reconnect\n");
	NET_SendToAll (&msg, 5.0);
   
	if (cls.state != ca_dedicated)
		Cmd_ExecuteString ("reconnect\n", src_command);
}


/*
================
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 = pr_global_struct->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
		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
================
*/
extern float      scr_centertime_off;

void SV_SpawnServer (char *server)
{
	edict_t	*ent;
	int		i;
	char	*entitystring = NULL; /* FS: Ent file loading */

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

	scr_centertime_off = 0;

	Con_DPrintf(DEVELOPER_MSG_SERVER, "SpawnServer: %s\n",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 consistant
	//
	if (coop.value)
		Cvar_SetValue ("deathmatch", 0);

	current_skill = (int)(skill.value + 0.5);
 
	if (current_skill < 0)
		current_skill = 0;

	if (current_skill > 3)
		current_skill = 3;

	Cvar_SetValue ("skill", (float)current_skill);
   
	//
	// set up the new server
	//
	Host_ClearMemory ();

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

	strcpy (sv.name, server);

	sv.protocol = sv_protocol; // johnfitz

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

	// allocate server memory
	sv.max_edicts = CLAMP (MIN_EDICTS,(int)max_edicts.value,MAX_EDICTS); //johnfitz -- max_edicts cvar
	sv.edicts = Hunk_AllocName (sv.max_edicts*pr_edict_size, "edicts");

	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
	sv.num_edicts = svs.maxclients+1;

	for (i=0 ; i<svs.maxclients ; i++)
	{
		ent = EDICT_NUM(i+1);
		svs.clients[i].edict = ent;
	}
   
	sv.state = ss_loading;
	sv.paused = false;

	sv.time = 1.0;
   
	strcpy (sv.name, server);
	sprintf (sv.modelname,"maps/%s.bsp", server);
	sv.worldmodel = Mod_ForName (sv.modelname, false);

	if (!sv.worldmodel)
	{
		Con_Printf ("Couldn't spawn server %s\n", sv.modelname);
		sv.active = false;
		return;
	}

	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++)
	{
		sv.model_precache[1+i] = 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 = sv.worldmodel->name - pr_strings;
	ent->v.modelindex = 1;     // world model
	ent->v.solid = SOLID_BSP;
	ent->v.movetype = MOVETYPE_PUSH;

	if (coop.value)
		pr_global_struct->coop = coop.value;
	else
		pr_global_struct->deathmatch = deathmatch.value;

	pr_global_struct->mapname = sv.name - pr_strings;

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


	/* FS: Load external ent files, from MVDSV */
	if(sv_loadentfiles.intValue)
	{
		char filename[MAX_QPATH];

		Com_sprintf(filename, sizeof(filename), "maps/%s.ent", server);
		Con_DPrintf(DEVELOPER_MSG_IO, "Attempting to load external ent file %s...\n", filename);
		entitystring = (char *) COM_LoadHunkFile (filename);

		if (!entitystring)
			Con_DPrintf(DEVELOPER_MSG_IO, "No external ent file found.\n");
		else
			Con_Warning("External ent file found!\n"); /* FS: Warn about non-standardness */

		if(entitystring && strlen(entitystring) == 0) /* FS: Check to see if it's blank. */
		{
			Con_Warning("%s.ent is blank!  Defaulting to %s.bsp.\n", filename, server);
			entitystring = NULL;
		}
	}

	if(!entitystring)
	{
		entitystring = sv.worldmodel->entities;
	}

	ED_LoadFromFile (entitystring);
   
	sv.active = true;

	// all setup is completed, any further precache statements are errors
	sv.state = ss_active;
   
	// run two frames to allow everything to settle
	host_frametime = 0.1;
	SV_Physics ();
	SV_Physics ();

	// create a baseline for more efficient communications
	SV_CreateBaseline ();

	//johnfitz -- warn if signon buffer larger than standard server can handle
	if (sv.signon.cursize > 8000-2) //max size that will fit into 8000-sized client->message buffer with 2 extra bytes on the end
		Con_Warning ("%i byte signon buffer exceeds standard limit of 7998.\n", sv.signon.cursize);
	//johnfitz

	// send serverinfo to all connected clients
	for (i=0,host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
		if (host_client->active)
			SV_SendServerinfo (host_client);
   
	Con_DPrintf(DEVELOPER_MSG_SERVER, "Server spawned.\n");
}
