/***
*
*	Copyright (c) 1996-2002, Valve LLC. All rights reserved.
*	
*	This product contains software technology licensed from Id 
*	Software, Inc. ("Id Technology").  Id Technology (c) 1996 Id Software, Inc. 
*	All Rights Reserved.
*
*   Use, distribution, and modification of this source code and/or resulting
*   object code is restricted to non-commercial enhancements to products from
*   Valve LLC.  All other use, distribution, or modification is prohibited
*   without written permission from Valve LLC.
*
****/
/*

===== world.cpp ========================================================

  precaches and defs for entities and other data that must always be available.

*/

#include "extdll.h"
#include "util.h"
#include "cbase.h"
#include "nodes.h"
#include "soundent.h"
#include "client.h"
#include "decals.h"
#include "skill.h"
#include "effects.h"
#include "player.h"
#include "weapons.h"
#include "gamerules.h"
#include "teamplay_gamerules.h"
#include "physcallback.h"

extern CGraph WorldGraph;
extern CSoundEnt *pSoundEnt;

extern CBaseEntity				*g_pLastSpawn;
DLL_GLOBAL edict_t				*g_pBodyQueueHead;
CGlobalState					gGlobalState;
extern DLL_GLOBAL int				gDisplayTitle;

extern void W_Precache( void );

//
// This must match the list in util.h
//
DLL_DECALLIST gDecals[] = {
	{ "{shot1", 0 },		// DECAL_GUNSHOT1 
	{ "{shot2", 0 },		// DECAL_GUNSHOT2
	{ "{shot3", 0 },		// DECAL_GUNSHOT3
	{ "{shot4", 0 },		// DECAL_GUNSHOT4
	{ "{shot5", 0 },		// DECAL_GUNSHOT5
	{ "{lambda01", 0 },		// DECAL_LAMBDA1
	{ "{lambda02", 0 },		// DECAL_LAMBDA2
	{ "{lambda03", 0 },		// DECAL_LAMBDA3
	{ "{lambda04", 0 },		// DECAL_LAMBDA4
	{ "{lambda05", 0 },		// DECAL_LAMBDA5
	{ "{lambda06", 0 },		// DECAL_LAMBDA6
	{ "{scorch1", 0 },		// DECAL_SCORCH1
	{ "{scorch2", 0 },		// DECAL_SCORCH2
	{ "{blood1", 0 },		// DECAL_BLOOD1
	{ "{blood2", 0 },		// DECAL_BLOOD2
	{ "{blood3", 0 },		// DECAL_BLOOD3
	{ "{blood4", 0 },		// DECAL_BLOOD4
	{ "{blood5", 0 },		// DECAL_BLOOD5
	{ "{blood6", 0 },		// DECAL_BLOOD6
	{ "{yblood1", 0 },		// DECAL_YBLOOD1
	{ "{yblood2", 0 },		// DECAL_YBLOOD2
	{ "{yblood3", 0 },		// DECAL_YBLOOD3
	{ "{yblood4", 0 },		// DECAL_YBLOOD4
	{ "{yblood5", 0 },		// DECAL_YBLOOD5
	{ "{yblood6", 0 },		// DECAL_YBLOOD6
	{ "{break1", 0 },		// DECAL_GLASSBREAK1
	{ "{break2", 0 },		// DECAL_GLASSBREAK2
	{ "{break3", 0 },		// DECAL_GLASSBREAK3
	{ "{bigshot1", 0 },		// DECAL_BIGSHOT1
	{ "{bigshot2", 0 },		// DECAL_BIGSHOT2
	{ "{bigshot3", 0 },		// DECAL_BIGSHOT3
	{ "{bigshot4", 0 },		// DECAL_BIGSHOT4
	{ "{bigshot5", 0 },		// DECAL_BIGSHOT5
	{ "{spit1", 0 },		// DECAL_SPIT1
	{ "{spit2", 0 },		// DECAL_SPIT2
	{ "{bproof1", 0 },		// DECAL_BPROOF1
	{ "{gargstomp", 0 },		// DECAL_GARGSTOMP1,	// Gargantua stomp crack
	{ "{smscorch1", 0 },		// DECAL_SMALLSCORCH1,	// Small scorch mark
	{ "{smscorch2", 0 },		// DECAL_SMALLSCORCH2,	// Small scorch mark
	{ "{smscorch3", 0 },		// DECAL_SMALLSCORCH3,	// Small scorch mark
	{ "{mommablob", 0 },		// DECAL_MOMMABIRTH		// BM Birth spray
	{ "{mommablob", 0 },		// DECAL_MOMMASPLAT		// BM Mortar spray?? need decal
};

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

BODY QUE

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

#define SF_DECAL_NOTINDEATHMATCH		2048

class CDecal : public CBaseEntity
{
public:
	void Spawn( void );
	void KeyValue( KeyValueData *pkvd );
	void EXPORT StaticDecal( void );
	void EXPORT TriggerDecal( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value );
};

LINK_ENTITY_TO_CLASS( infodecal, CDecal )

// UNDONE:  These won't get sent to joining players in multi-player
void CDecal::Spawn( void )
{
	if( pev->skin < 0 || ( gpGlobals->deathmatch && FBitSet( pev->spawnflags, SF_DECAL_NOTINDEATHMATCH ) ) )
	{
		REMOVE_ENTITY( ENT( pev ) );
		return;
	}

	if( FStringNull( pev->targetname ) )
	{
		SetThink( &CDecal::StaticDecal );
		// if there's no targetname, the decal will spray itself on as soon as the world is done spawning.
		pev->nextthink = gpGlobals->time;
	}
	else
	{
		// if there IS a targetname, the decal sprays itself on when it is triggered.
		SetThink( &CBaseEntity::SUB_DoNothing );
		SetUse( &CDecal::TriggerDecal );
	}
}

void CDecal::TriggerDecal( CBaseEntity *pActivator, CBaseEntity *pCaller, USE_TYPE useType, float value )
{
	// this is set up as a USE function for infodecals that have targetnames, so that the
	// decal doesn't get applied until it is fired. (usually by a scripted sequence)
	TraceResult trace;
	int entityIndex;

	UTIL_TraceLine( pev->origin - Vector( 5, 5, 5 ), pev->origin + Vector( 5, 5, 5 ),  ignore_monsters, ENT( pev ), &trace );

	MESSAGE_BEGIN( MSG_BROADCAST, SVC_TEMPENTITY );
		WRITE_BYTE( TE_BSPDECAL );
		WRITE_COORD( pev->origin.x );
		WRITE_COORD( pev->origin.y );
		WRITE_COORD( pev->origin.z );
		WRITE_SHORT( (int)pev->skin );
		entityIndex = (short)ENTINDEX( trace.pHit );
		WRITE_SHORT( entityIndex );
		if( entityIndex )
			WRITE_SHORT( (int)VARS( trace.pHit )->modelindex );
	MESSAGE_END();

	SetThink( &CBaseEntity::SUB_Remove );
	pev->nextthink = gpGlobals->time + 0.1;
}

void CDecal::StaticDecal( void )
{
	TraceResult trace;
	int entityIndex, modelIndex;

	UTIL_TraceLine( pev->origin - Vector( 5, 5, 5 ), pev->origin + Vector( 5, 5, 5 ),  ignore_monsters, ENT( pev ), &trace );

	entityIndex = (short)ENTINDEX( trace.pHit );
	if( entityIndex )
		modelIndex = (int)VARS( trace.pHit )->modelindex;
	else
		modelIndex = 0;

	g_engfuncs.pfnStaticDecal( pev->origin, (int)pev->skin, entityIndex, modelIndex );

	SUB_Remove();
}

void CDecal::KeyValue( KeyValueData *pkvd )
{
	if( FStrEq( pkvd->szKeyName, "texture" ) )
	{
		pev->skin = DECAL_INDEX( pkvd->szValue );

		// Found
		if( pev->skin >= 0 )
			return;
		ALERT( at_console, "Can't find decal %s\n", pkvd->szValue );
	}
	else
		CBaseEntity::KeyValue( pkvd );
}

// Body queue class here.... It's really just CBaseEntity
class CCorpse : public CBaseEntity
{
	virtual int ObjectCaps( void ) { return FCAP_DONT_SAVE; }	
};

LINK_ENTITY_TO_CLASS( bodyque, CCorpse )

static void InitBodyQue( void )
{
	string_t istrClassname = MAKE_STRING( "bodyque" );

	g_pBodyQueueHead = CREATE_NAMED_ENTITY( istrClassname );
	entvars_t *pev = VARS( g_pBodyQueueHead );

	// Reserve 3 more slots for dead bodies
	for( int i = 0; i < 3; i++ )
	{
		pev->owner = CREATE_NAMED_ENTITY( istrClassname );
		pev = VARS( pev->owner );
	}

	pev->owner = g_pBodyQueueHead;
}

//
// make a body que entry for the given ent so the ent can be respawned elsewhere
//
// GLOBALS ASSUMED SET:  g_eoBodyQueueHead
//
void CopyToBodyQue( entvars_t *pev ) 
{
	if( pev->effects & EF_NODRAW )
		return;

	entvars_t *pevHead = VARS( g_pBodyQueueHead );

	pevHead->angles		= pev->angles;
	pevHead->model		= pev->model;
	pevHead->modelindex	= pev->modelindex;
	pevHead->frame		= pev->frame;
	pevHead->colormap	= pev->colormap;
	pevHead->movetype	= MOVETYPE_TOSS;
	pevHead->velocity	= pev->velocity;
	pevHead->flags		= 0;
	pevHead->deadflag	= pev->deadflag;
	pevHead->renderfx	= kRenderFxDeadPlayer;
	pevHead->renderamt	= ENTINDEX( ENT( pev ) );

	pevHead->effects = pev->effects | EF_NOINTERP;
	//pevHead->goalstarttime = pev->goalstarttime;
	//pevHead->goalframe = pev->goalframe;
	//pevHead->goalendtime = pev->goalendtime ;

	pevHead->sequence = pev->sequence;
	pevHead->animtime = pev->animtime;

	UTIL_SetOrigin( pevHead, pev->origin );
	UTIL_SetSize( pevHead, pev->mins, pev->maxs );
	g_pBodyQueueHead = pevHead->owner;
}

CGlobalState::CGlobalState( void )
{
	Reset();
}

void CGlobalState::Reset( void )
{
	m_pList = NULL; 
	m_listCount = 0;
}

globalentity_t *CGlobalState::Find( string_t globalname )
{
	if( !globalname )
		return NULL;

	globalentity_t *pTest;
	const char *pEntityName = STRING( globalname );

	pTest = m_pList;
	while( pTest )
	{
		if( FStrEq( pEntityName, pTest->name ) )
			break;

		pTest = pTest->pNext;
	}

	return pTest;
}

// This is available all the time now on impulse 104, remove later
//#ifdef _DEBUG
void CGlobalState::DumpGlobals( void )
{
	static char *estates[] = { "Off", "On", "Dead" };
	globalentity_t *pTest;

	ALERT( at_console, "-- Globals --\n" );
	pTest = m_pList;
	while( pTest )
	{
		ALERT( at_console, "%s: %s (%s)\n", pTest->name, pTest->levelName, estates[pTest->state] );
		pTest = pTest->pNext;
	}
}
//#endif

void CGlobalState::EntityAdd( string_t globalname, string_t mapName, GLOBALESTATE state )
{
	ASSERT( !Find( globalname ) );

	globalentity_t *pNewEntity = (globalentity_t *)calloc( sizeof( globalentity_t ), 1 );
	ASSERT( pNewEntity != NULL );
	pNewEntity->pNext = m_pList;
	m_pList = pNewEntity;
	strcpy( pNewEntity->name, STRING( globalname ) );
	strcpy( pNewEntity->levelName, STRING( mapName ) );
	pNewEntity->state = state;
	m_listCount++;
}

void CGlobalState::EntitySetState( string_t globalname, GLOBALESTATE state )
{
	globalentity_t *pEnt = Find( globalname );

	if( pEnt )
		pEnt->state = state;
}

const globalentity_t *CGlobalState :: EntityFromTable( string_t globalname )
{
	globalentity_t *pEnt = Find( globalname );

	return pEnt;
}

GLOBALESTATE CGlobalState::EntityGetState( string_t globalname )
{
	globalentity_t *pEnt = Find( globalname );
	if( pEnt )
		return pEnt->state;

	return GLOBAL_OFF;
}

// Global Savedata for Delay
TYPEDESCRIPTION	CGlobalState::m_SaveData[] =
{
	DEFINE_FIELD( CGlobalState, m_listCount, FIELD_INTEGER ),
};

// Global Savedata for Delay
TYPEDESCRIPTION	gGlobalEntitySaveData[] =
{
	DEFINE_ARRAY( globalentity_t, name, FIELD_CHARACTER, 64 ),
	DEFINE_ARRAY( globalentity_t, levelName, FIELD_CHARACTER, 32 ),
	DEFINE_FIELD( globalentity_t, state, FIELD_INTEGER ),
};

int CGlobalState::Save( CSave &save )
{
	int i;
	globalentity_t *pEntity;

	if( !save.WriteFields( "GLOBAL", this, m_SaveData, ARRAYSIZE( m_SaveData ) ) )
		return 0;
	
	pEntity = m_pList;
	for( i = 0; i < m_listCount && pEntity; i++ )
	{
		if( !save.WriteFields( "GENT", pEntity, gGlobalEntitySaveData, ARRAYSIZE( gGlobalEntitySaveData ) ) )
			return 0;

		pEntity = pEntity->pNext;
	}
	
	return 1;
}

int CGlobalState::Restore( CRestore &restore )
{
	int i, listCount;
	globalentity_t tmpEntity;

	ClearStates();
	if( !restore.ReadFields( "GLOBAL", this, m_SaveData, ARRAYSIZE( m_SaveData ) ) )
		return 0;

	listCount = m_listCount;	// Get new list count
	m_listCount = 0;				// Clear loaded data

	for( i = 0; i < listCount; i++ )
	{
		if( !restore.ReadFields( "GENT", &tmpEntity, gGlobalEntitySaveData, ARRAYSIZE( gGlobalEntitySaveData ) ) )
			return 0;
		EntityAdd( MAKE_STRING( tmpEntity.name ), MAKE_STRING( tmpEntity.levelName ), tmpEntity.state );
	}
	return 1;
}

void CGlobalState::EntityUpdate( string_t globalname, string_t mapname )
{
	globalentity_t *pEnt = Find( globalname );

	if( pEnt )
		strcpy( pEnt->levelName, STRING( mapname ) );
}

void CGlobalState::ClearStates( void )
{
	globalentity_t *pFree = m_pList;
	while( pFree )
	{
		globalentity_t *pNext = pFree->pNext;
		free( pFree );
		pFree = pNext;
	}
	Reset();
}

void SaveGlobalState( SAVERESTOREDATA *pSaveData )
{
	CSave saveHelper( pSaveData );
	gGlobalState.Save( saveHelper );
}

void RestoreGlobalState( SAVERESTOREDATA *pSaveData )
{
	CRestore restoreHelper( pSaveData );
	gGlobalState.Restore( restoreHelper );
}

void ResetGlobalState( void )
{
	gGlobalState.ClearStates();
	gInitHUD = TRUE;	// Init the HUD on a new game / load game
}

// moved CWorld class definition to cbase.h
//=======================
// CWorld
//
// This spawns first when each level begins.
//=======================

LINK_ENTITY_TO_CLASS( worldspawn, CWorld )

#define SF_WORLD_DARK		0x0001		// Fade from black at startup
#define SF_WORLD_TITLE		0x0002		// Display game title at startup
#define SF_WORLD_FORCETEAM	0x0004		// Force teams

extern DLL_GLOBAL BOOL		g_fGameOver;
float g_flWeaponCheat; 

void CWorld::Spawn( void )
{
	g_fGameOver = FALSE;
	Precache();
}

void CWorld::Precache( void )
{
	g_pLastSpawn = NULL;
#if 1
	CVAR_SET_STRING( "sv_gravity", "800" ); // 67ft/sec
	CVAR_SET_STRING( "sv_stepsize", "18" );
#else
	CVAR_SET_STRING( "sv_gravity", "384" ); // 32ft/sec
	CVAR_SET_STRING( "sv_stepsize", "24" );
#endif
	CVAR_SET_STRING( "room_type", "0" );// clear DSP

	// Set up game rules
	if( g_pGameRules )
	{
		delete g_pGameRules;
		g_pGameRules = NULL;
	}

	g_pGameRules = InstallGameRules();

	//!!!UNDONE why is there so much Spawn code in the Precache function? I'll just keep it here 

	///!!!LATER - do we want a sound ent in deathmatch? (sjb)
	//pSoundEnt = CBaseEntity::Create( "soundent", g_vecZero, g_vecZero, edict() );
	pSoundEnt = GetClassPtr( ( CSoundEnt *)NULL );
	pSoundEnt->Spawn();

	if( !pSoundEnt )
	{
		ALERT ( at_console, "**COULD NOT CREATE SOUNDENT**\n" );
	}

	InitBodyQue();

	// init sentence group playback stuff from sentences.txt.
	// ok to call this multiple times, calls after first are ignored.
	SENTENCEG_Init();

	// init texture type array from materials.txt
	TEXTURETYPE_Init();

	// the area based ambient sounds MUST be the first precache_sounds
	// player precaches
	W_Precache();				// get weapon precaches

	ClientPrecache();

	// sounds used from C physics code
	PRECACHE_SOUND( "common/null.wav" );// clears sound channels

	PRECACHE_SOUND( "items/suitchargeok1.wav" );//!!! temporary sound for respawning weapons.
	PRECACHE_SOUND( "items/gunpickup2.wav" );// player picks up a gun.

	PRECACHE_SOUND( "common/bodydrop3.wav" );// dead bodies hitting the ground (animation events)
	PRECACHE_SOUND( "common/bodydrop4.wav" );
	
	g_Language = (int)CVAR_GET_FLOAT( "sv_language" );
	if( g_Language == LANGUAGE_GERMAN )
	{
		PRECACHE_MODEL( "models/germangibs.mdl" );
	}
	else
	{
		PRECACHE_MODEL( "models/hgibs.mdl" );
		PRECACHE_MODEL( "models/agibs.mdl" );
	}

	PRECACHE_SOUND( "weapons/ric1.wav" );
	PRECACHE_SOUND( "weapons/ric2.wav" );
	PRECACHE_SOUND( "weapons/ric3.wav" );
	PRECACHE_SOUND( "weapons/ric4.wav" );
	PRECACHE_SOUND( "weapons/ric5.wav" );

	//
	// Setup light animation tables. 'a' is total darkness, 'z' is maxbright.
	//

	// 0 normal
	LIGHT_STYLE( 0, "m" );

	// 1 FLICKER (first variety)
	LIGHT_STYLE( 1, "mmnmmommommnonmmonqnmmo" );

	// 2 SLOW STRONG PULSE
	LIGHT_STYLE( 2, "abcdefghijklmnopqrstuvwxyzyxwvutsrqponmlkjihgfedcba" );

	// 3 CANDLE (first variety)
	LIGHT_STYLE( 3, "mmmmmaaaaammmmmaaaaaabcdefgabcdefg" );

	// 4 FAST STROBE
	LIGHT_STYLE( 4, "mamamamamama" );

	// 5 GENTLE PULSE 1
	LIGHT_STYLE( 5,"jklmnopqrstuvwxyzyxwvutsrqponmlkj" );

	// 6 FLICKER (second variety)
	LIGHT_STYLE( 6, "nmonqnmomnmomomno" );

	// 7 CANDLE (second variety)
	LIGHT_STYLE( 7, "mmmaaaabcdefgmmmmaaaammmaamm" );

	// 8 CANDLE (third variety)
	LIGHT_STYLE( 8, "mmmaaammmaaammmabcdefaaaammmmabcdefmmmaaaa" );

	// 9 SLOW STROBE (fourth variety)
	LIGHT_STYLE( 9, "aaaaaaaazzzzzzzz" );

	// 10 FLUORESCENT FLICKER
	LIGHT_STYLE( 10, "mmamammmmammamamaaamammma" );

	// 11 SLOW PULSE NOT FADE TO BLACK
	LIGHT_STYLE( 11, "abcdefghijklmnopqrrqponmlkjihgfedcba" );

	// 12 UNDERWATER LIGHT MUTATION
	// this light only distorts the lightmap - no contribution
	// is made to the brightness of affected surfaces
	LIGHT_STYLE( 12, "mmnnmmnnnmmnn" );

	// styles 32-62 are assigned by the light program for switchable lights

	// 63 testing
	LIGHT_STYLE( 63, "a" );

	for( int i = 0; i < ARRAYSIZE( gDecals ); i++ )
		gDecals[i].index = DECAL_INDEX( gDecals[i].name );

	// init the WorldGraph.
	WorldGraph.InitGraph();

	// make sure the .NOD file is newer than the .BSP file.
	if( !WorldGraph.CheckNODFile( ( char * )STRING( gpGlobals->mapname ) ) )
	{
		// NOD file is not present, or is older than the BSP file.
		WorldGraph.AllocNodes();
	}
	else
	{
		// Load the node graph for this level
		if( !WorldGraph.FLoadGraph ( (char *)STRING( gpGlobals->mapname ) ) )
		{
			// couldn't load, so alloc and prepare to build a graph.
			ALERT( at_console, "*Error opening .NOD file\n" );
			WorldGraph.AllocNodes();
		}
		else
		{
			ALERT( at_console, "\n*Graph Loaded!\n" );
		}
	}

	if( pev->speed > 0 )
		CVAR_SET_FLOAT( "sv_zmax", pev->speed );
	else
		CVAR_SET_FLOAT( "sv_zmax", 4096 );

	// g-cont. moved here to right restore global WaveHeight on save\restore level
	CVAR_SET_FLOAT( "sv_wateramp", pev->scale );

	if( pev->netname )
	{
		ALERT( at_aiconsole, "Chapter title: %s\n", STRING( pev->netname ) );
		CBaseEntity *pEntity = CBaseEntity::Create( "env_message", g_vecZero, g_vecZero, NULL );
		if( pEntity )
		{
			pEntity->SetThink( &CBaseEntity::SUB_CallUseToggle );
			pEntity->pev->message = pev->netname;
			pev->netname = 0;
			pEntity->pev->nextthink = gpGlobals->time + 0.3;
			pEntity->pev->spawnflags = SF_MESSAGE_ONCE;
		}
	}

	if( pev->spawnflags & SF_WORLD_DARK )
		CVAR_SET_FLOAT( "v_dark", 1.0 );
	else
		CVAR_SET_FLOAT( "v_dark", 0.0 );

	pev->spawnflags &= ~SF_WORLD_DARK;		// g-cont. don't apply fade after save\restore

	if( pev->spawnflags & SF_WORLD_TITLE )
		gDisplayTitle = TRUE;		// display the game title if this key is set
	else
		gDisplayTitle = FALSE;

	pev->spawnflags &= ~SF_WORLD_TITLE;		// g-cont. don't show logo after save\restore

	if( pev->spawnflags & SF_WORLD_FORCETEAM )
	{
		CVAR_SET_FLOAT( "mp_defaultteam", 1 );
	}
	else
	{
		CVAR_SET_FLOAT( "mp_defaultteam", 0 );
	}

	CVAR_SET_FLOAT( "cl_lw", 0 ); //Temporary solution for weapon animation.

	// g-cont. moved here so cheats will working on restore level
	g_flWeaponCheat = CVAR_GET_FLOAT( "sv_cheats" );  // Is the impulse 101 command allowed?
}

//
// Just to ignore the "wad" field.
//
void CWorld::KeyValue( KeyValueData *pkvd )
{
	if( FStrEq( pkvd->szKeyName, "skyname" ) )
	{
		// Sent over net now.
		CVAR_SET_STRING( "sv_skyname", pkvd->szValue );
		pkvd->fHandled = TRUE;
	}
	else if( FStrEq( pkvd->szKeyName, "sounds" ) )
	{
		gpGlobals->cdAudioTrack = atoi( pkvd->szValue );
		pkvd->fHandled = TRUE;
	}
	else if( FStrEq(pkvd->szKeyName, "WaveHeight" ) )
	{
		// Sent over net now.
		pev->scale = atof( pkvd->szValue ) * ( 1.0 / 8.0 );
		pkvd->fHandled = TRUE;
	}
	else if( FStrEq( pkvd->szKeyName, "MaxRange" ) )
	{
		pev->speed = atof( pkvd->szValue );
		pkvd->fHandled = TRUE;
	}
	else if( FStrEq( pkvd->szKeyName, "chaptertitle" ) )
	{
		pev->netname = ALLOC_STRING( pkvd->szValue );
		pkvd->fHandled = TRUE;
	}
	else if( FStrEq( pkvd->szKeyName, "startdark" ) )
	{
		// UNDONE: This is a gross hack!!! The CVAR is NOT sent over the client/sever link
		// but it will work for single player
		int flag = atoi( pkvd->szValue );
		pkvd->fHandled = TRUE;
		if( flag )
			pev->spawnflags |= SF_WORLD_DARK;
	}
	else if( FStrEq(pkvd->szKeyName, "newunit") )
	{
		// Single player only.  Clear save directory if set
		if( atoi( pkvd->szValue ) )
			CVAR_SET_FLOAT( "sv_newunit", 1 );
		pkvd->fHandled = TRUE;
	}
	else if( FStrEq(pkvd->szKeyName, "gametitle" ) )
	{
		if( atoi( pkvd->szValue ) )
			pev->spawnflags |= SF_WORLD_TITLE;

		pkvd->fHandled = TRUE;
	}
	else if( FStrEq( pkvd->szKeyName, "mapteams" ) )
	{
		pev->team = ALLOC_STRING( pkvd->szValue );
		pkvd->fHandled = TRUE;
	}
	else if( FStrEq( pkvd->szKeyName, "defaultteam" ) )
	{
		if( atoi( pkvd->szValue ) )
		{
			pev->spawnflags |= SF_WORLD_FORCETEAM;
		}
		pkvd->fHandled = TRUE;
	}
	else
		CBaseEntity::KeyValue( pkvd );
}

//
// Xash3D physics interface
//

typedef void (*LINK_ENTITY_FN)( entvars_t *pev );

//
// attempt to create custom entity when default method is failed
// 0 - attempt to create, -1 - reject to create
//
int DispatchCreateEntity( edict_t *pent, const char *szName )
{
/*
#ifdef CREATE_ENTITY_TEST
	// quake armor entities. we just replaced it with item_battery...
	if( !strcmp( szName, "item_armor1" ) || !strcmp( szName, "item_armor2" ) )
	{
		LINK_ENTITY_FN	SpawnEdict;

		// ugly method to get acess with himself exports
		SpawnEdict = (LINK_ENTITY_FN)GetProcAddress( GetModuleHandle( "hl" ), "item_battery" );

		if( SpawnEdict != NULL )	// found the valid spawn
		{
			// BUGBUG: old classname hanging in memory
			pent->v.classname = ALLOC_STRING( "item_battery" );

			//ALERT( at_console, "DispatchCreateEntity: replace %s with %s\n", szName, STRING( pent->v.classname ) );

			SpawnEdict( &pent->v );
			return 0;	// handled
		}
	}
#endif
*/
	return -1;
}

//
// run custom physics for each entity
// return 0 to use built-in engine physic
//
int DispatchPhysicsEntity( edict_t *pEdict )
{
	CBaseEntity *pEntity = (CBaseEntity *)GET_PRIVATE( pEdict );

	if( !pEntity )
	{
		//ALERT( at_console, "skip %s [%i] without private data\n", STRING( pEdict->v.classname ), ENTINDEX( pEdict ) ); 
		return 0;	// not initialized
	}

	// NOTE: at this point pEntity assume to be valid
/*
#ifdef CUSTOM_PHYSICS_TEST
	// test alien controller without physics, thinking only
	if( FClassnameIs( pEntity->pev, "monster_alien_controller" ) )
	{
		float thinktime;

		thinktime = pEntity->pev->nextthink;
		if( thinktime <= 0.0f || thinktime > PHYSICS_TIME() + gpGlobals->frametime )
			return 1;

		if( thinktime < PHYSICS_TIME() )
			thinktime = PHYSICS_TIME();	// don't let things stay in the past.
							// it is possible to start that way
							// by a trigger with a local time.
		pEntity->pev->nextthink = 0.0f;
		gpGlobals->time = thinktime;

		DispatchThink( pEdict );

#ifdef GRAVITY_TEST
		// stupid fake gravity test
		pEntity->pev->origin.z -= 1;
		LINK_ENTITY( pEdict, true );
#endif
		return 1;	// handled
	}
#endif
*/
	return 0;
}

static physics_interface_t gPhysicsInterface =
{
	SV_PHYSICS_INTERFACE_VERSION,
	DispatchCreateEntity,
	DispatchPhysicsEntity,
};

int Server_GetPhysicsInterface( int iVersion, server_physics_api_t *pfuncsFromEngine, physics_interface_t *pFunctionTable )
{
	if( !pFunctionTable || !pfuncsFromEngine || iVersion != SV_PHYSICS_INTERFACE_VERSION )
	{
		return FALSE;
	}

	// copy new physics interface
	memcpy( &g_physfuncs, pfuncsFromEngine, sizeof(server_physics_api_t) );

	// fill engine callbacks
	memcpy( pFunctionTable, &gPhysicsInterface, sizeof(physics_interface_t) );

	return TRUE;
}