Merge remote-tracking branch 'upstream/master'

1 files changed, 1463 insertions, 1463 deletions

diff --git a/mp/src/game/server/fire.cpp b/mp/src/game/server/fire.cpp
index 75a11399..ee5fd24c 100644
--- a/mp/src/game/server/fire.cpp
+++ b/mp/src/game/server/fire.cpp
@@ -1,1463 +1,1463 @@
-//========= Copyright Valve Corporation, All rights reserved. ============//

-//

-// Purpose: 

-//

-// $NoKeywords: $

-//

-//=============================================================================//

-//---------------------------------------------------------

-//---------------------------------------------------------

-#include "cbase.h"

-#include "decals.h"

-#include "fire.h"

-#include "entitylist.h"

-#include "basecombatcharacter.h"

-#include "ndebugoverlay.h"

-#include "engine/IEngineSound.h"

-#include "ispatialpartition.h"

-#include "collisionutils.h"

-#include "tier0/vprof.h"

-

-// memdbgon must be the last include file in a .cpp file!!!

-#include "tier0/memdbgon.h"

-

-

-/********************************************************************

- NOTE: if you are looking at this file becase you would like flares 

- to be considered as fires (and thereby trigger gas traps), be aware 

- that the env_flare class is actually found in weapon_flaregun.cpp 

- and is really a repurposed piece of ammunition. (env_flare isn't the 

- rod-like safety flare prop, but rather the bit of flame on the end.)

-

- You will have some difficulty making it work here, because CFlare 

- does not inherit from CFire and will thus not be enumerated by 

- CFireSphere::EnumElement(). In order to have flares be detected and 

- used by this system, you will need to promote certain member functions 

- of CFire into an interface class from which both CFire and CFlare 

- inherit. You will also need to modify CFireSphere::EnumElement so that

- it properly disambiguates between fires and flares.

-

- For some partial work towards this end, see changelist 192474.

-

- ********************************************************************/

-

-

-

-

-#define	FIRE_HEIGHT				256.0f

-#define FIRE_SCALE_FROM_SIZE(firesize)		(firesize * (1/FIRE_HEIGHT))

-

-#define	FIRE_MAX_GROUND_OFFSET	24.0f	//(2 feet)

-

-#define	DEFAULT_ATTACK_TIME	4.0f

-#define	DEFAULT_DECAY_TIME	8.0f

-

-// UNDONE: This shouldn't be constant but depend on specific fire

-#define	FIRE_WIDTH				128

-#define	FIRE_MINS				Vector(-20,-20,0 )   // Sould be FIRE_WIDTH in size

-#define FIRE_MAXS				Vector( 20, 20,20)	 // Sould be FIRE_WIDTH in size

-#define FIRE_SPREAD_DAMAGE_MULTIPLIER 2.0

-

-#define FIRE_MAX_HEAT_LEVEL		64.0f

-#define	FIRE_NORMAL_ATTACK_TIME	20.0f

-#define FIRE_THINK_INTERVAL		0.1

-

-ConVar fire_maxabsorb( "fire_maxabsorb", "50" );

-ConVar fire_absorbrate( "fire_absorbrate", "3" );

-ConVar fire_extscale("fire_extscale", "12");

-ConVar fire_extabsorb("fire_extabsorb", "5");

-ConVar fire_heatscale( "fire_heatscale", "1.0" );

-ConVar fire_incomingheatscale( "fire_incomingheatscale", "0.1" );

-ConVar fire_dmgscale( "fire_dmgscale", "0.1" );

-ConVar fire_dmgbase( "fire_dmgbase", "1" );

-ConVar fire_growthrate( "fire_growthrate", "1.0" );

-ConVar fire_dmginterval( "fire_dmginterval", "1.0" );

-

-#define VPROF_FIRE(s) VPROF( s )

-

-class CFire : public CBaseEntity

-{

-public:

-	DECLARE_CLASS( CFire, CBaseEntity );

-	

-	int DrawDebugTextOverlays(void);

-

-	CFire( void );

-	

-	virtual void UpdateOnRemove( void );

-

-	void	Precache( void );

-	void	Init( const Vector &position, float scale, float attackTime, float fuel, int flags, int fireType );

-	bool	GoOut();

-	

-	void	BurnThink();

-	void	GoOutThink();

-	void	GoOutInSeconds( float seconds );

-

-	void	SetOwner( CBaseEntity *hOwner ) { m_hOwner = hOwner; }

-	

-	void	Scale( float end, float time );

-	void	AddHeat( float heat, bool selfHeat = false );

-	int		OnTakeDamage( const CTakeDamageInfo &info );

-

-	bool	IsBurning( void ) const;

-

-	bool	GetFireDimensions( Vector *pFireMins, Vector *pFireMaxs );

-	

-	void	Extinguish( float heat );

-	void	DestroyEffect();

-

-	virtual	void Update( float simTime );

-

-	void	Spawn( void );

-	void	Activate( void );

-	void	StartFire( void );

-	void	Start();

-	void	SetToOutSize()

-	{

-		UTIL_SetSize( this, Vector(-8,-8,0), Vector(8,8,8) );

-	}

-

-	float	GetHeatLevel()	{ return m_flHeatLevel; }

-

-	virtual int UpdateTransmitState();

-

-	void DrawDebugGeometryOverlays(void) 

-	{

-		if (m_debugOverlays & OVERLAY_BBOX_BIT) 

-		{	

-			if ( m_lastDamage > gpGlobals->curtime && m_flHeatAbsorb > 0 )

-			{

-				NDebugOverlay::EntityBounds(this, 88, 255, 128, 0 ,0);

-				char tempstr[512];

-				Q_snprintf( tempstr, sizeof(tempstr), "Heat: %.1f", m_flHeatAbsorb );

-				EntityText(1,tempstr, 0);

-			}

-			else if ( !IsBurning() )

-			{

-				NDebugOverlay::EntityBounds(this, 88, 88, 128, 0 ,0);

-			}

-

-			if ( IsBurning() )

-			{

-				Vector mins, maxs;

-				if ( GetFireDimensions( &mins, &maxs ) )

-				{

-					NDebugOverlay::Box(GetAbsOrigin(), mins, maxs, 128, 0, 0, 10, 0);

-				}

-			}

-

-

-		}

-		BaseClass::DrawDebugGeometryOverlays();

-	}

-

-	void Disable();

-

-	//Inputs

-	void	InputStartFire( inputdata_t &inputdata );

-	void	InputExtinguish( inputdata_t &inputdata );

-	void	InputExtinguishTemporary( inputdata_t &inputdata );

-	void	InputEnable( inputdata_t &inputdata );

-	void	InputDisable( inputdata_t &inputdata );

-

-protected:

-	

-	void	Spread( void );

-	void	SpawnEffect( fireType_e type, float scale );

-

-	CHandle<CBaseFire>	m_hEffect;

-	EHANDLE		m_hOwner;

-	

-	int		m_nFireType;

-

-	float	m_flFuel;

-	float	m_flDamageTime;

-	float	m_lastDamage;

-	float	m_flFireSize;	// size of the fire in world units

-

-	float	m_flHeatLevel;	// Used as a "health" for the fire.  > 0 means the fire is burning

-	float	m_flHeatAbsorb;	// This much heat must be "absorbed" before it gets transferred to the flame size

-	float	m_flDamageScale;

-

-	float	m_flMaxHeat;

-	float	m_flLastHeatLevel;

-

-	//NOTENOTE: Lifetime is an expression of the sum total of these amounts plus the global time when started

-	float	m_flAttackTime;	//Amount of time to scale up

-

-	bool	m_bEnabled;

-	bool	m_bStartDisabled;

-	bool	m_bDidActivate;

-

-

-	COutputEvent	m_OnIgnited;

-	COutputEvent	m_OnExtinguished;

-

-	DECLARE_DATADESC();

-};

-

-class CFireSphere : public IPartitionEnumerator

-{

-public:

-	CFireSphere( CFire **pList, int listMax, bool onlyActiveFires, const Vector &origin, float radius );

-	// This gets called	by the enumeration methods with each element

-	// that passes the test.

-	virtual IterationRetval_t EnumElement( IHandleEntity *pHandleEntity );

-	

-	int GetCount() { return m_count; }

-	bool AddToList( CFire *pEntity );

-

-private:

-	Vector			m_origin;

-	float			m_radiusSqr;

-	CFire			**m_pList;

-	int				m_listMax;

-	int				m_count;

-	bool			m_onlyActiveFires;

-};

-

-CFireSphere::CFireSphere( CFire **pList, int listMax, bool onlyActiveFires, const Vector &origin, float radius )

-{

-	m_pList = pList;

-	m_listMax = listMax;

-	m_count = 0;

-	m_onlyActiveFires = onlyActiveFires;

-	m_origin = origin;

-	m_radiusSqr = radius * radius;

-}

-

-bool CFireSphere::AddToList( CFire *pFire )

-{

-	if ( m_count >= m_listMax )

-		return false;

-	m_pList[m_count] = pFire;

-	m_count++;

-	return true;

-}

-

-IterationRetval_t CFireSphere::EnumElement( IHandleEntity *pHandleEntity )

-{

-	CBaseEntity *pEntity = gEntList.GetBaseEntity( pHandleEntity->GetRefEHandle() );

-	if ( pEntity )

-	{

-		// UNDONE: Measure which of these is faster

-//		CFire *pFire = dynamic_cast<CFire *>(pEntity);

-		if ( !FClassnameIs( pEntity, "env_fire" ) )

-			return ITERATION_CONTINUE;

-

-		CFire *pFire = static_cast<CFire *>(pEntity);

-		if ( pFire )

-		{

-			if ( !m_onlyActiveFires || pFire->IsBurning() )

-			{

-				if ( (m_origin - pFire->GetAbsOrigin()).LengthSqr() < m_radiusSqr )

-				{

-					if ( !AddToList( pFire ) )

-						return ITERATION_STOP;

-				}

-			}

-		}

-	}

-

-	return ITERATION_CONTINUE;

-}

-

-

-int FireSystem_GetFiresInSphere( CFire **pList, int listMax, bool onlyActiveFires, const Vector &origin, float radius )

-{

-	CFireSphere sphereEnum( pList, listMax, onlyActiveFires, origin, radius );

-	partition->EnumerateElementsInSphere( PARTITION_ENGINE_NON_STATIC_EDICTS, origin, radius, false, &sphereEnum );

-

-	return sphereEnum.GetCount();

-}

-

-

-bool FireSystem_IsValidFirePosition( const Vector &position, float testRadius )

-{

-	CFire *pList[1];

-	int count = FireSystem_GetFiresInSphere( pList, ARRAYSIZE(pList), true, position, testRadius );

-	if ( count > 0 )

-		return false;

-	return true;

-}

-

-

-//------------------------------------------------------------------------------

-// Purpose :

-// Input   :

-// Output  :

-//------------------------------------------------------------------------------

-bool FireSystem_IsFireInWall( Vector &position, fireType_e type )

-{

-	// Don't check natural fire against walls

-	if (type == FIRE_NATURAL)

-		return false;

-

-	trace_t tr;

-	UTIL_TraceHull( position, position+Vector(0,0,0.1), FIRE_MINS,FIRE_MAXS,MASK_SOLID, NULL, COLLISION_GROUP_NONE, &tr );

-	if (tr.fraction != 1.0 || tr.startsolid)

-	{

-		//NDebugOverlay::Box(position,FIRE_MINS,FIRE_MAXS,255,0,0,50,10);

-		return true;

-	}

-	//NDebugOverlay::Box(position,FIRE_MINS,FIRE_MAXS,0,255,0,50,10);

-

-	return false;

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: Determines whether or not a new fire may be placed at a given location

-// Input  : &position - where we are trying to put the new fire

-//			separationRadius - the maximum distance fires must be apart from one another

-// Output : Returns true on success, false on failure.

-//-----------------------------------------------------------------------------

-bool FireSystem_CanAddFire( Vector *position, float separationRadius, fireType_e type, int flags )

-{

-	//See if we found a fire inside the sphere

-	if ( !FireSystem_IsValidFirePosition( *position, separationRadius ) )

-		return false;

-

-	// Unless our fire is floating, make sure were not too high

-	if (!(flags & SF_FIRE_DONT_DROP))

-	{

-		trace_t	tr;

-		Vector	startpos = *position;

-		Vector	endpos = *position;

-

-		startpos[2] += 1;

-		endpos[2] -= FIRE_MAX_GROUND_OFFSET;

-

-		UTIL_TraceLine( startpos, endpos, MASK_SOLID, NULL, COLLISION_GROUP_NONE, &tr );

-

-		//See if we're floating too high 

-		if ( ( tr.allsolid ) || ( tr.startsolid) || ( tr.fraction == 1.0f ) )

-		{

-			return false;

-		}

-

-		//TODO: If we've hit an entity here, start it on fire

-		CBaseEntity *pEntity = tr.m_pEnt;

-

-		if ( ENTINDEX( pEntity->edict() ) != 0 )

-		{

-			return false;

-		}

-	}

-

-

-

-	// Check if fire is in a wall, if so try shifting around a bit

-	if (FireSystem_IsFireInWall( *position, type ))

-	{

-		Vector vTestPos = *position;

-		vTestPos.x		+= 10;

-		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))

-		{

-			*position = vTestPos;

-			return true;

-		}

-		vTestPos.y		+= 10;

-		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))

-		{

-			*position = vTestPos;

-			return true;

-		}

-		vTestPos.y		-= 20;

-		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))

-		{

-			*position = vTestPos;

-			return true;

-		}

-		vTestPos.x		-= 20;

-		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))

-		{

-			*position = vTestPos;

-			return true;

-		}

-		return false;

-	}

-

-	//Able to add here

-	return true;

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: Starts a fire at a specified location

-// Input  : &position - position to start the fire at

-//			flags - any special modifiers

-//-----------------------------------------------------------------------------

-bool FireSystem_StartFire( const Vector &position, float fireHeight, float attack, float fuel, int flags, CBaseEntity *owner, fireType_e type )

-{

-	VPROF_FIRE( "FireSystem_StartFire1" );

-

-	Vector testPos = position;

-	//Must be okay to add fire here

-	if ( FireSystem_CanAddFire( &testPos, 16.0f, type, flags ) == false )

-	{

-		CFire *pFires[16];

-		int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), true, position, 16.0f );

-		for ( int i = 0; i < fireCount; i++ )

-		{

-			// add to this fire

-			pFires[i]->AddHeat( fireHeight, false );

-		}

-

-		return false;

-	}

-

-	//Create a new fire entity

-	CFire *fire = (CFire *) CreateEntityByName( "env_fire" );

-	

-	if ( fire == NULL )

-		return false;

-

-	//Spawn the fire

-	// Fires not placed by a designer should be cleaned up automatically (not catch fire again)

-	fire->AddSpawnFlags( SF_FIRE_DIE_PERMANENT );

-	fire->Spawn();

-	fire->Init( testPos, fireHeight, attack, fuel, flags, type );

-	fire->Start();

-	fire->SetOwner( owner );

-

-	return true;

-}

-

-

-//-----------------------------------------------------------------------------

-// Purpose: Starts a fire on a specified model.

-// Input  : pEntity - The model entity to catch on fire.

-//			fireHeight - 

-//			attack - 

-//			fuel - 

-//			flags - 

-//			owner - 

-//			type - 

-// Output : Returns true on success, false on failure.

-//-----------------------------------------------------------------------------

-bool FireSystem_StartFire( CBaseAnimating *pEntity, float fireHeight, float attack, float fuel, int flags, CBaseEntity *owner, fireType_e type )

-{

-	VPROF_FIRE( "FireSystem_StartFire2" );

-

-	Vector position = pEntity->GetAbsOrigin();

-	Vector testPos = position;

-

-	// Make sure its a valid position for fire (not in a wall, etc)

-	if ( FireSystem_CanAddFire( &testPos, 16.0f, type, flags ) == false )

-	{

-		// Contribute heat to all fires within 16 units of this fire.

-		CFire *pFires[16];

-		int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), true, position, 16.0f );

-		for ( int i = 0; i < fireCount; i++ )

-		{

-			pFires[i]->AddHeat( fireHeight, false );

-		}

-

-		return false;

-	}

-

-	// Create a new fire entity

-	CFire *fire = (CFire *) CreateEntityByName( "env_fire" );

-	if ( fire == NULL )

-	{

-		return false;

-	}

-

-	// Spawn the fire.

-	// Fires not placed by a designer should be cleaned up automatically (not catch fire again).

-	fire->AddSpawnFlags( SF_FIRE_DIE_PERMANENT );

-	fire->Spawn();

-	fire->Init( testPos, fireHeight, attack, fuel, flags, type );

-	fire->Start();

-	fire->SetOwner( owner );

-

-	return true;

-}

-

-

-void FireSystem_ExtinguishInRadius( const Vector &origin, float radius, float rate )

-{

-	// UNDONE: pass this instead of percent

-	float heat = (1-rate) * fire_extscale.GetFloat();

-

-	CFire *pFires[32];

-	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), false, origin, radius );

-	for ( int i = 0; i < fireCount; i++ )

-	{

-		pFires[i]->Extinguish( heat );

-	}

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-// Input  : &origin - 

-//			radius - 

-//			heat - 

-//-----------------------------------------------------------------------------

-void FireSystem_AddHeatInRadius( const Vector &origin, float radius, float heat )

-{

-	VPROF_FIRE( "FireSystem_AddHeatInRadius" );

-

-	CFire *pFires[32];

-

-	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), false, origin, radius );

-	for ( int i = 0; i < fireCount; i++ )

-	{

-		pFires[i]->AddHeat( heat );

-	}

-}

-

-//-----------------------------------------------------------------------------

-

-bool FireSystem_GetFireDamageDimensions( CBaseEntity *pEntity, Vector *pFireMins, Vector *pFireMaxs )

-{

-	CFire *pFire = dynamic_cast<CFire *>(pEntity);

-

-	if ( pFire && pFire->GetFireDimensions( pFireMins, pFireMaxs ) )

-	{

-		*pFireMins /= FIRE_SPREAD_DAMAGE_MULTIPLIER;

-		*pFireMaxs /= FIRE_SPREAD_DAMAGE_MULTIPLIER;

-		return true;

-	}

-	pFireMins->Init();

-	pFireMaxs->Init();

-	return false;

-}

-

-

-//==================================================

-// CFire

-//==================================================

-BEGIN_DATADESC( CFire )

-

-	DEFINE_FIELD( m_hEffect, FIELD_EHANDLE ),

-	DEFINE_FIELD( m_hOwner, FIELD_EHANDLE ),

-	DEFINE_KEYFIELD( m_nFireType,	FIELD_INTEGER, "firetype" ),

-

-	DEFINE_FIELD( m_flFuel, FIELD_FLOAT ),

-	DEFINE_FIELD( m_flDamageTime, FIELD_TIME ),

-	DEFINE_FIELD( m_lastDamage, FIELD_TIME ),

-	DEFINE_KEYFIELD( m_flFireSize,	FIELD_FLOAT, "firesize" ),

-

-	DEFINE_KEYFIELD( m_flHeatLevel,	FIELD_FLOAT,	"ignitionpoint" ),

- 	DEFINE_FIELD( m_flHeatAbsorb, FIELD_FLOAT ),

- 	DEFINE_KEYFIELD( m_flDamageScale,FIELD_FLOAT,	"damagescale" ),

-

-	DEFINE_FIELD( m_flMaxHeat, FIELD_FLOAT ),

-	//DEFINE_FIELD( m_flLastHeatLevel,	FIELD_FLOAT  ),

-

-	DEFINE_KEYFIELD( m_flAttackTime, FIELD_FLOAT, "fireattack" ),

-	DEFINE_FIELD( m_bEnabled, FIELD_BOOLEAN ),

-	DEFINE_KEYFIELD( m_bStartDisabled, FIELD_BOOLEAN, "StartDisabled" ),

-	DEFINE_FIELD( m_bDidActivate, FIELD_BOOLEAN ),

-

-	DEFINE_FUNCTION( BurnThink ),

-	DEFINE_FUNCTION( GoOutThink ),

-

-

-

-	DEFINE_INPUTFUNC( FIELD_VOID, "StartFire", InputStartFire ),

-	DEFINE_INPUTFUNC( FIELD_FLOAT, "Extinguish", InputExtinguish ),

-	DEFINE_INPUTFUNC( FIELD_FLOAT, "ExtinguishTemporary", InputExtinguishTemporary ),

-

-	DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),

-	DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),

-	

-	DEFINE_OUTPUT( m_OnIgnited, "OnIgnited" ),

-	DEFINE_OUTPUT( m_OnExtinguished, "OnExtinguished" ),

-

-END_DATADESC()

-

-LINK_ENTITY_TO_CLASS( env_fire, CFire );

-

-//==================================================

-// CFire

-//==================================================

-

-CFire::CFire( void )

-{

-	m_flFuel = 0.0f;

-	m_flAttackTime = 0.0f;

-	m_flDamageTime = 0.0f;

-	m_lastDamage = 0;

-	m_nFireType = FIRE_NATURAL;

-

-	//Spreading

-	m_flHeatAbsorb = 8.0f;

-	m_flHeatLevel = 0;

-

-	// Must be in the constructor!

-	AddEFlags( EFL_USE_PARTITION_WHEN_NOT_SOLID );

-}

-

-//-----------------------------------------------------------------------------

-// UpdateOnRemove

-//-----------------------------------------------------------------------------

-void CFire::UpdateOnRemove( void )

-{

-	//Stop any looping sounds that might be playing

-	StopSound( "Fire.Plasma" );

-

-	DestroyEffect();

-

-	// Chain at end to mimic destructor unwind order

-	BaseClass::UpdateOnRemove();

-}

-

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-//-----------------------------------------------------------------------------

-void CFire::Precache( void )

-{

-	if ( m_nFireType == FIRE_NATURAL )

-	{

-		UTIL_PrecacheOther("_firesmoke");

-		

-		if ( m_spawnflags & SF_FIRE_SMOKELESS )

-		{

-			PrecacheParticleSystem( "env_fire_tiny" );

-			PrecacheParticleSystem( "env_fire_small" );

-			PrecacheParticleSystem( "env_fire_medium" );

-			PrecacheParticleSystem( "env_fire_large" );

-		}

-		else

-		{

-			PrecacheParticleSystem( "env_fire_tiny_smoke" );

-			PrecacheParticleSystem( "env_fire_small_smoke" );

-			PrecacheParticleSystem( "env_fire_medium_smoke" );

-			PrecacheParticleSystem( "env_fire_large_smoke" );

-		}

-	}

-

-	if ( m_nFireType == FIRE_PLASMA )

-	{

-		UTIL_PrecacheOther("_plasma");

-	}

-

-	PrecacheScriptSound( "Fire.Plasma" );

-}

-

-//------------------------------------------------------------------------------

-// Purpose : Input handler for starting the fire.

-//------------------------------------------------------------------------------

-void CFire::InputStartFire( inputdata_t &inputdata )

-{

-	if ( !m_bEnabled )

-		return;

-

-	StartFire();

-}

-

-void CFire::InputEnable( inputdata_t &inputdata )

-{

-	m_bEnabled = true;

-}

-

-void CFire::InputDisable( inputdata_t &inputdata )

-{

-	Disable();

-}

-

-void CFire::Disable() 

-{

-	m_bEnabled = false;

-	if ( IsBurning() )

-	{

-		GoOut();

-	}

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-// Input  : &inputdata - 

-//-----------------------------------------------------------------------------

-void CFire::InputExtinguish( inputdata_t &inputdata )

-{

-	m_spawnflags &= ~SF_FIRE_INFINITE;

-	GoOutInSeconds( inputdata.value.Float() );

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-// Input  : &inputdata - 

-//-----------------------------------------------------------------------------

-void CFire::InputExtinguishTemporary( inputdata_t &inputdata )

-{

-	GoOutInSeconds( inputdata.value.Float() );

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: Starts burning.

-//-----------------------------------------------------------------------------

-void CFire::StartFire( void )

-{

-	if ( m_hEffect != NULL )

-		return;

-

-	// Trace down and start a fire there. Nothing fancy yet.

-	Vector vFirePos;

-	trace_t tr;

-	if ( m_spawnflags & SF_FIRE_DONT_DROP )

-	{

-		vFirePos = GetAbsOrigin();

-	}

-	else

-	{

-		UTIL_TraceLine( GetAbsOrigin(), GetAbsOrigin() - Vector( 0, 0, 1024 ), MASK_FIRE_SOLID, this, COLLISION_GROUP_NONE, &tr );

-		vFirePos = tr.endpos;

-	}

-

-	int spawnflags = m_spawnflags;

-	m_spawnflags |= SF_FIRE_START_ON;

-	Init( vFirePos, m_flFireSize, m_flAttackTime, GetHealth(), m_spawnflags, (fireType_e) m_nFireType );

-	Start();

-	m_spawnflags = spawnflags;

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-//-----------------------------------------------------------------------------

-void CFire::Spawn( void )

-{

-	BaseClass::Spawn();

-

-	Precache();

-

-	m_takedamage = DAMAGE_NO;

-

-	SetSolid( SOLID_NONE );

-	AddEffects( EF_NODRAW );

-	SetToOutSize();

-

-	// set up the ignition point

-	m_flHeatAbsorb = m_flHeatLevel * 0.05;

-	m_flHeatLevel = 0;

-	Init( GetAbsOrigin(), m_flFireSize, m_flAttackTime, m_flFuel, m_spawnflags, m_nFireType );

-	

-	if( m_bStartDisabled )

-	{

-		Disable();

-	}

-	else

-	{

-		m_bEnabled = true;

-	}

-}

-

-int CFire::UpdateTransmitState()

-{

-	// Don't want to be FL_EDICT_DONTSEND because our fire entity may make us transmit.

-	return SetTransmitState( FL_EDICT_ALWAYS );

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-//-----------------------------------------------------------------------------

-void CFire::Activate( void )

-{

-	BaseClass::Activate();

-	

-	//See if we should start active

-	if ( !m_bDidActivate && ( m_spawnflags & SF_FIRE_START_ON ) )

-	{

-		m_flHeatLevel = m_flMaxHeat;

-

-		StartFire();

-	}

-

-	m_bDidActivate = true;

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-//-----------------------------------------------------------------------------

-void CFire::SpawnEffect( fireType_e type, float scale )

-{

-	CBaseFire *pEffect = NULL;

-	switch ( type )

-	{

-	default:

-	case FIRE_NATURAL:

-		{

-			CFireSmoke	*fireSmoke = (CFireSmoke *) CreateEntityByName( "_firesmoke" );

-			fireSmoke->EnableSmoke( ( m_spawnflags & SF_FIRE_SMOKELESS )==false );

-			fireSmoke->EnableGlow( ( m_spawnflags & SF_FIRE_NO_GLOW )==false );

-			fireSmoke->EnableVisibleFromAbove( ( m_spawnflags & SF_FIRE_VISIBLE_FROM_ABOVE )!=false );

-			

-			pEffect			= fireSmoke;

-			m_nFireType		= FIRE_NATURAL;

-			m_takedamage	= DAMAGE_YES;

-		}

-		break;

-

-	case FIRE_PLASMA:

-		{

-			CPlasma	*plasma = (CPlasma *) CreateEntityByName( "_plasma" );

-			plasma->EnableSmoke( true );

-		

-			pEffect			= plasma;

-			m_nFireType		= FIRE_PLASMA;

-			m_takedamage	= DAMAGE_YES;

-

-			// Start burn sound

-			EmitSound( "Fire.Plasma" );

-		}

-		break;

-	}

-

-	UTIL_SetOrigin( pEffect, GetAbsOrigin() );

-	pEffect->Spawn();

-	pEffect->SetParent( this );

-	pEffect->Scale( m_flFireSize, m_flFireSize, 0 );

-	//Start it going

-	pEffect->Enable( ( m_spawnflags & SF_FIRE_START_ON ) );

-	m_hEffect = pEffect;

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: Spawn and initialize the fire

-// Input  : &position - where the fire resides

-//			lifetime - 

-//-----------------------------------------------------------------------------

-void CFire::Init( const Vector &position, float scale, float attackTime, float fuel, int flags, int fireType )

-{

-	m_flAttackTime = attackTime;

-	

-	m_spawnflags = flags;

-	m_nFireType = fireType;

-

-	if ( flags & SF_FIRE_INFINITE )

-	{

-		fuel = 0;

-	}

-	m_flFuel = fuel;

-	if ( m_flFuel )

-	{

-		m_spawnflags |= SF_FIRE_DIE_PERMANENT;

-	}

-

-	Vector localOrigin = position;

-	if ( GetMoveParent() )

-	{

-		EntityMatrix parentMatrix;

-		parentMatrix.InitFromEntity( GetMoveParent() );

-		localOrigin = parentMatrix.WorldToLocal( position );

-	}

-	UTIL_SetOrigin( this, localOrigin );

-

-	SetSolid( SOLID_NONE );

-	m_flFireSize = scale;

-	m_flMaxHeat = FIRE_MAX_HEAT_LEVEL * FIRE_SCALE_FROM_SIZE(scale);

-	//See if we should start on

-	if ( m_spawnflags & SF_FIRE_START_FULL )

-	{

-		m_flHeatLevel = m_flMaxHeat;

-	}

-	m_flLastHeatLevel = 0;

-

-}

-

-void CFire::Start()

-{

-	float boxWidth = (m_flFireSize * (FIRE_WIDTH/FIRE_HEIGHT))*0.5f;

-	UTIL_SetSize(this, Vector(-boxWidth,-boxWidth,0),Vector(boxWidth,boxWidth,m_flFireSize));

-

-	//Spawn the client-side effect

-	SpawnEffect( (fireType_e)m_nFireType, FIRE_SCALE_FROM_SIZE(m_flFireSize) );

-	m_OnIgnited.FireOutput( this, this );

-	SetThink( &CFire::BurnThink );

-	m_flDamageTime = 0;

-	// think right now

-	BurnThink();

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: Determines whether or not the fire is still active

-// Output : Returns true on success, false on failure.

-//-----------------------------------------------------------------------------

-bool CFire::IsBurning( void ) const

-{

-	if ( m_flHeatLevel > 0 )

-		return true;

-

-	return false;

-}

-

-

-//-----------------------------------------------------------------------------

-// Purpose: Get the damage box of the fire

-//-----------------------------------------------------------------------------

-bool CFire::GetFireDimensions( Vector *pFireMins, Vector *pFireMaxs )

-{

-	if ( m_flHeatLevel <= 0 )

-	{

-		pFireMins->Init();

-		pFireMaxs->Init();

-		return false;

-	}

-

-	float scale = m_flHeatLevel / m_flMaxHeat;

-	float damageRadius = scale * m_flFireSize * FIRE_WIDTH / FIRE_HEIGHT * 0.5;	

-

-	damageRadius *= FIRE_SPREAD_DAMAGE_MULTIPLIER; //FIXME: Trying slightly larger radius for burning

-

-	if ( damageRadius < 16 )

-	{

-		damageRadius = 16;

-	}

-

-	pFireMins->Init(-damageRadius,-damageRadius,0);

-	pFireMaxs->Init(damageRadius,damageRadius,m_flFireSize*scale);

-

-	return true;

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: Update the fire and its children

-//-----------------------------------------------------------------------------

-void CFire::Update( float simTime )

-{

-	VPROF_FIRE( "CFire::Update" );

-

-	if ( m_flFuel != 0 )

-	{

-		m_flFuel -= simTime;

-		if ( m_flFuel <= 0 )

-		{

-			GoOutInSeconds( 1 );

-			return;

-		}

-	}

-

-	float strength = m_flHeatLevel / FIRE_MAX_HEAT_LEVEL;

-	if ( m_flHeatLevel != m_flLastHeatLevel )

-	{

-		m_flLastHeatLevel = m_flHeatLevel;

-		// Make the effect the appropriate size given the heat level

-		m_hEffect->Scale( strength, 0.5f );		

-	}

-	// add heat to myself (grow)

-	float addedHeat = (m_flAttackTime > 0) ? m_flMaxHeat / m_flAttackTime : m_flMaxHeat;

-	addedHeat *= simTime * fire_growthrate.GetFloat();

-	AddHeat( addedHeat, true );

-

-	// add heat to nearby fires

-	float outputHeat = strength * m_flHeatLevel;

-

-	Vector fireMins;

-	Vector fireMaxs;

-	Vector fireEntityDamageMins;

-	Vector fireEntityDamageMaxs;

-

-	GetFireDimensions( &fireMins, &fireMaxs );

-

-	if ( FIRE_SPREAD_DAMAGE_MULTIPLIER != 1.0 ) // if set to 1.0, optimizer will remove this code

-	{

-		fireEntityDamageMins = fireMins / FIRE_SPREAD_DAMAGE_MULTIPLIER;

-		fireEntityDamageMaxs = fireMaxs / FIRE_SPREAD_DAMAGE_MULTIPLIER;

-	}

-

-	//NDebugOverlay::Box( GetAbsOrigin(), fireMins, fireMaxs, 255, 255, 255, 0, fire_dmginterval.GetFloat() );

-	fireMins += GetAbsOrigin();

-	fireMaxs += GetAbsOrigin();

-

-	if ( FIRE_SPREAD_DAMAGE_MULTIPLIER != 1.0 )

-	{

-		fireEntityDamageMins += GetAbsOrigin();

-		fireEntityDamageMaxs += GetAbsOrigin();

-	}

-

-	CBaseEntity *pNearby[256];

-	CFire *pFires[16];

-	int nearbyCount = UTIL_EntitiesInBox( pNearby, ARRAYSIZE(pNearby), fireMins, fireMaxs, 0 );

-	int fireCount = 0;

-	int i;

-

-	// is it time to do damage?

-	bool damage = false;

-	int outputDamage = 0;

-	if ( m_flDamageTime <= gpGlobals->curtime )

-	{

-		m_flDamageTime = gpGlobals->curtime + fire_dmginterval.GetFloat();

-		outputDamage = (fire_dmgbase.GetFloat() + outputHeat * fire_dmgscale.GetFloat() * m_flDamageScale) * fire_dmginterval.GetFloat();

-		if ( outputDamage )

-		{

-			damage = true;

-		}

-	}

-	int damageFlags = (m_nFireType == FIRE_NATURAL) ? DMG_BURN : DMG_PLASMA;

-	for ( i = 0; i < nearbyCount; i++ )

-	{

-		CBaseEntity *pOther = pNearby[i];

-

-		if ( pOther == this )

-		{

-			continue;

-		}

-		else if ( FClassnameIs( pOther, "env_fire" ) )

-		{

-			if ( fireCount < ARRAYSIZE(pFires) )

-			{

-				pFires[fireCount] = (CFire *)pOther;

-				fireCount++;

-			}

-			continue;

-		}

-		else if ( pOther->m_takedamage == DAMAGE_NO )

-		{

-			pNearby[i] = NULL;

-		}

-		else if ( damage )

-		{

-			bool bDoDamage;

-

-			if ( FIRE_SPREAD_DAMAGE_MULTIPLIER != 1.0 && !pOther->IsPlayer() ) // if set to 1.0, optimizer will remove this code

-			{

-				Vector otherMins, otherMaxs;

-				pOther->CollisionProp()->WorldSpaceAABB( &otherMins, &otherMaxs );

-				bDoDamage = IsBoxIntersectingBox( otherMins, otherMaxs, 

-												  fireEntityDamageMins, fireEntityDamageMaxs );

-

-			}

-			else

-				bDoDamage = true;

-

-			if ( bDoDamage )

-			{

-				// Make sure can actually see entity (don't damage through walls)

-				trace_t tr;

-				UTIL_TraceLine( this->WorldSpaceCenter(), pOther->WorldSpaceCenter(), MASK_FIRE_SOLID, pOther, COLLISION_GROUP_NONE, &tr );

-

-				if (tr.fraction == 1.0 && !tr.startsolid)

-				{

-					pOther->TakeDamage( CTakeDamageInfo( this, this, outputDamage, damageFlags ) );

-				}

-			}

-		}

-	}

-

-	outputHeat *= fire_heatscale.GetFloat() * simTime;

-

-	if ( fireCount > 0 )

-	{

-		outputHeat /= fireCount;

-		for ( i = 0; i < fireCount; i++ )

-		{

-			pFires[i]->AddHeat( outputHeat, false );

-		}

-	}

-}

-

-// Destroy any effect I have

-void CFire::DestroyEffect()

-{

-	CBaseFire *pEffect = m_hEffect;

-	if ( pEffect != NULL )

-	{

-		//disable the graphics and remove the entity

-		pEffect->Enable( false );

-		UTIL_Remove( pEffect );

-	}

-}

-//-----------------------------------------------------------------------------

-// Purpose: Think

-//-----------------------------------------------------------------------------

-void CFire::BurnThink( void )

-{

-	SetNextThink( gpGlobals->curtime + FIRE_THINK_INTERVAL );

-

-	Update( FIRE_THINK_INTERVAL );

-}

-

-void CFire::GoOutThink()

-{

-	GoOut();

-}

-

-void CFire::GoOutInSeconds( float seconds )

-{

-	Scale( 0.0f, seconds );

-	

-	SetThink( &CFire::GoOutThink );

-	SetNextThink( gpGlobals->curtime + seconds );

-}

-

-//------------------------------------------------------------------------------

-// Purpose : Blasts of significant size blow out fires that take damage

-// Input   :

-// Output  :

-//------------------------------------------------------------------------------

-int CFire::OnTakeDamage( const CTakeDamageInfo &info )

-{

-	return 0;

-}

-

-void CFire::AddHeat( float heat, bool selfHeat )

-{

-	if ( m_bEnabled )

-	{

-		if ( !selfHeat )

-		{

-			if ( IsBurning() )

-			{

-				// scale back the incoming heat from surrounding fires

-				// if I've already ignited

-				heat *= fire_incomingheatscale.GetFloat();

-			}

-		}

-		m_lastDamage = gpGlobals->curtime + 0.5;

-		bool start = m_flHeatLevel <= 0 ? true : false;

-		if ( m_flHeatAbsorb > 0 )

-		{

-			float absorbDamage = heat * fire_absorbrate.GetFloat();

-			if ( absorbDamage > m_flHeatAbsorb )

-			{

-				heat -= m_flHeatAbsorb / fire_absorbrate.GetFloat();

-				m_flHeatAbsorb = 0;

-			}

-			else

-			{

-				m_flHeatAbsorb -= absorbDamage;

-				heat = 0;

-			}

-		}

-

-		m_flHeatLevel += heat;

-		if ( start && m_flHeatLevel > 0 && m_hEffect == NULL )

-		{

-			StartFire();

-		}

-		if ( m_flHeatLevel > m_flMaxHeat )

-			m_flHeatLevel = m_flMaxHeat;

-	}

-}

-

-	

-//-----------------------------------------------------------------------------

-// Purpose: 

-// Input  : end - 

-//			time - 

-//-----------------------------------------------------------------------------

-void CFire::Scale( float end, float time )

-{

-	CBaseFire *pEffect = m_hEffect;

-	if ( pEffect )

-	{

-		pEffect->Scale( end, time );

-	}

-}

-

-

-//-----------------------------------------------------------------------------

-// Purpose: 

-// Input  : time - 

-//-----------------------------------------------------------------------------

-void CFire::Extinguish( float heat )

-{

-	if ( !m_bEnabled )

-		return;

-

-	m_lastDamage = gpGlobals->curtime + 0.5;

-	bool out = m_flHeatLevel > 0 ? true : false;

-

-	m_flHeatLevel -= heat;

-	m_flHeatAbsorb += fire_extabsorb.GetFloat() * heat;

-	if ( m_flHeatAbsorb > fire_maxabsorb.GetFloat() )

-	{

-		m_flHeatAbsorb = fire_maxabsorb.GetFloat();

-	}

-

-	// drift toward the average attack time after being sprayed

-	// some fires are heavily scripted so their attack looks weird 

-	// once interacted with.  Basically, this blends out the scripting 

-	// as the fire is sprayed with the extinguisher.

-	float averageAttackTime = m_flMaxHeat * (FIRE_NORMAL_ATTACK_TIME/FIRE_MAX_HEAT_LEVEL);

-	m_flAttackTime = Approach( averageAttackTime, m_flAttackTime, 2 * gpGlobals->frametime );

-

-	if ( m_flHeatLevel <= 0 )

-	{

-		m_flHeatLevel = 0;

-		if ( out )

-		{

-			GoOut();

-		}

-	}

-}

-

-bool CFire::GoOut()

-{

-	//Signal death

-	m_OnExtinguished.FireOutput( this, this );

-

-	DestroyEffect();

-	m_flHeatLevel -= 20;

-	if ( m_flHeatLevel > 0 )

-		m_flHeatLevel = 0;

-

-	m_flLastHeatLevel = m_flHeatLevel; 

-	SetThink(NULL);

-	SetNextThink( TICK_NEVER_THINK );

-	if ( m_spawnflags & SF_FIRE_DIE_PERMANENT )

-	{

-		UTIL_Remove( this );

-		return true;

-	}

-	SetToOutSize();

-	

-	return false;

-}

-

-//==================================================

-// CEnvFireSource is a source of heat that the player 

-// cannot put out

-//==================================================

-

-#define FIRESOURCE_THINK_TIME		0.25		// seconds to 

-

-#define SF_FIRESOURCE_START_ON		0x0001

-

-class CEnvFireSource : public CBaseEntity

-{

-	DECLARE_CLASS( CEnvFireSource, CBaseEntity );

-public:

-	void Spawn();

-	void Think();

-	void TurnOn();

-	void TurnOff();

-	void InputEnable( inputdata_t &inputdata );

-	void InputDisable( inputdata_t &inputdata );

-

-	DECLARE_DATADESC();

-

-private:

-	bool		m_bEnabled;

-	float		m_radius;

-	float		m_damage;

-};

-

-BEGIN_DATADESC( CEnvFireSource )

-

-	DEFINE_FIELD( m_bEnabled, FIELD_BOOLEAN ),

-	DEFINE_KEYFIELD( m_radius,	FIELD_FLOAT, "fireradius" ),

-	DEFINE_KEYFIELD( m_damage,FIELD_FLOAT, "firedamage" ),

-

-	DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),

-	DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),

-

-

-END_DATADESC()

-

-LINK_ENTITY_TO_CLASS( env_firesource, CEnvFireSource );

-

-void CEnvFireSource::Spawn()

-{

-	if ( m_spawnflags & SF_FIRESOURCE_START_ON )

-	{

-		TurnOn();

-	}

-	else

-	{

-		TurnOff();

-	}

-}

-

-void CEnvFireSource::Think()

-{

-	if ( !m_bEnabled )

-		return;

-	SetNextThink( gpGlobals->curtime + FIRESOURCE_THINK_TIME );

-

-	CFire *pFires[128];

-	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), false, GetAbsOrigin(), m_radius );

-

-	for ( int i = 0; i < fireCount; i++ )

-	{

-		pFires[i]->AddHeat( m_damage * FIRESOURCE_THINK_TIME );

-	}

-}

-

-void CEnvFireSource::TurnOn()

-{

-	if ( m_bEnabled )

-		return;

-

-	m_bEnabled = true;

-	SetNextThink( gpGlobals->curtime );

-}

-

-void CEnvFireSource::TurnOff()

-{

-	if ( !m_bEnabled )

-		return;

-

-	m_bEnabled = false;

-	SetNextThink( TICK_NEVER_THINK );

-}

-void CEnvFireSource::InputEnable( inputdata_t &inputdata )

-{

-	TurnOn();

-}

-void CEnvFireSource::InputDisable( inputdata_t &inputdata )

-{

-	TurnOff();

-}

-

-//==================================================

-// CEnvFireSensor detects changes in heat

-//==================================================

-#define SF_FIRESENSOR_START_ON	1

-

-class CEnvFireSensor : public CBaseEntity

-{

-	DECLARE_CLASS( CEnvFireSensor, CBaseEntity );

-public:

-	void Spawn();

-	void Think();

-	void TurnOn();

-	void TurnOff();

-	void InputEnable( inputdata_t &inputdata );

-	void InputDisable( inputdata_t &inputdata );

-

-	DECLARE_DATADESC();

-

-private:

-	bool			m_bEnabled;

-	bool			m_bHeatAtLevel;

-	float			m_radius;

-	float			m_targetLevel;

-	float			m_targetTime;

-	float			m_levelTime;

-

-	COutputEvent	m_OnHeatLevelStart;

-	COutputEvent	m_OnHeatLevelEnd;

-};

-

-BEGIN_DATADESC( CEnvFireSensor )

-

-	DEFINE_KEYFIELD( m_radius,	FIELD_FLOAT, "fireradius" ),

-	DEFINE_KEYFIELD( m_targetLevel, FIELD_FLOAT, "heatlevel" ),

-	DEFINE_KEYFIELD( m_targetTime, FIELD_FLOAT, "heattime" ),

-

-	DEFINE_FIELD( m_bEnabled, FIELD_BOOLEAN ),

-	DEFINE_FIELD( m_bHeatAtLevel, FIELD_BOOLEAN ),

-	DEFINE_FIELD( m_levelTime, FIELD_FLOAT ),

-	

-	DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),

-	DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),

-

-	DEFINE_OUTPUT( m_OnHeatLevelStart, "OnHeatLevelStart"),

-	DEFINE_OUTPUT( m_OnHeatLevelEnd, "OnHeatLevelEnd"),

-

-END_DATADESC()

-

-LINK_ENTITY_TO_CLASS( env_firesensor, CEnvFireSensor );

-

-void CEnvFireSensor::Spawn()

-{

-	if ( m_spawnflags & SF_FIRESENSOR_START_ON )

-	{

-		TurnOn();

-	}

-	else

-	{

-		TurnOff();

-	}

-}

-

-void CEnvFireSensor::Think()

-{

-	if ( !m_bEnabled )

-		return;

-

-	float time = m_targetTime * 0.25;

-	if ( time < 0.1 )

-	{

-		time = 0.1;

-	}

-	SetNextThink( gpGlobals->curtime + time );

-

-	float heat = 0;

-	CFire *pFires[128];

-	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), true, GetAbsOrigin(), m_radius );

-	for ( int i = 0; i < fireCount; i++ )

-	{

-		heat += pFires[i]->GetHeatLevel();

-	}

-

-	if ( heat >= m_targetLevel )

-	{

-		m_levelTime += time;

-		if ( m_levelTime >= m_targetTime )

-		{

-			if ( !m_bHeatAtLevel )

-			{

-				m_bHeatAtLevel = true;

-				m_OnHeatLevelStart.FireOutput( this, this );

-			}

-		}

-	}

-	else

-	{

-		m_levelTime = 0;

-		if ( m_bHeatAtLevel )

-		{

-			m_bHeatAtLevel = false;

-			m_OnHeatLevelEnd.FireOutput( this, this );

-		}

-	}

-}

-

-void CEnvFireSensor::TurnOn()

-{

-	if ( m_bEnabled )

-		return;

-

-	m_bEnabled = true;

-	SetNextThink( gpGlobals->curtime );

-	m_bHeatAtLevel = false;

-	m_levelTime = 0;

-}

-

-void CEnvFireSensor::TurnOff()

-{

-	if ( !m_bEnabled )

-		return;

-

-	m_bEnabled = false;

-	SetNextThink( TICK_NEVER_THINK );

-	if ( m_bHeatAtLevel )

-	{

-		m_bHeatAtLevel = false;

-		m_OnHeatLevelEnd.FireOutput( this, this );

-	}

-

-}

-void CEnvFireSensor::InputEnable( inputdata_t &inputdata )

-{

-	TurnOn();

-}

-void CEnvFireSensor::InputDisable( inputdata_t &inputdata )

-{

-	TurnOff();

-}

-

-//-----------------------------------------------------------------------------

-// Purpose: Draw any debug text overlays

-// Output : Current text offset from the top

-//-----------------------------------------------------------------------------

-int CFire::DrawDebugTextOverlays( void ) 

-{

-	int text_offset = BaseClass::DrawDebugTextOverlays();

-

-	if (m_debugOverlays & OVERLAY_TEXT_BIT) 

-	{

-		char tempstr[512];

-

-		// print flame size

-		Q_snprintf(tempstr,sizeof(tempstr),"    size: %f", m_flFireSize);

-		EntityText(text_offset,tempstr,0);

-		text_offset++;

-	}

-	return text_offset;

-}

+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+//---------------------------------------------------------
+//---------------------------------------------------------
+#include "cbase.h"
+#include "decals.h"
+#include "fire.h"
+#include "entitylist.h"
+#include "basecombatcharacter.h"
+#include "ndebugoverlay.h"
+#include "engine/IEngineSound.h"
+#include "ispatialpartition.h"
+#include "collisionutils.h"
+#include "tier0/vprof.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+
+/********************************************************************
+ NOTE: if you are looking at this file becase you would like flares 
+ to be considered as fires (and thereby trigger gas traps), be aware 
+ that the env_flare class is actually found in weapon_flaregun.cpp 
+ and is really a repurposed piece of ammunition. (env_flare isn't the 
+ rod-like safety flare prop, but rather the bit of flame on the end.)
+
+ You will have some difficulty making it work here, because CFlare 
+ does not inherit from CFire and will thus not be enumerated by 
+ CFireSphere::EnumElement(). In order to have flares be detected and 
+ used by this system, you will need to promote certain member functions 
+ of CFire into an interface class from which both CFire and CFlare 
+ inherit. You will also need to modify CFireSphere::EnumElement so that
+ it properly disambiguates between fires and flares.
+
+ For some partial work towards this end, see changelist 192474.
+
+ ********************************************************************/
+
+
+
+
+#define	FIRE_HEIGHT				256.0f
+#define FIRE_SCALE_FROM_SIZE(firesize)		(firesize * (1/FIRE_HEIGHT))
+
+#define	FIRE_MAX_GROUND_OFFSET	24.0f	//(2 feet)
+
+#define	DEFAULT_ATTACK_TIME	4.0f
+#define	DEFAULT_DECAY_TIME	8.0f
+
+// UNDONE: This shouldn't be constant but depend on specific fire
+#define	FIRE_WIDTH				128
+#define	FIRE_MINS				Vector(-20,-20,0 )   // Sould be FIRE_WIDTH in size
+#define FIRE_MAXS				Vector( 20, 20,20)	 // Sould be FIRE_WIDTH in size
+#define FIRE_SPREAD_DAMAGE_MULTIPLIER 2.0
+
+#define FIRE_MAX_HEAT_LEVEL		64.0f
+#define	FIRE_NORMAL_ATTACK_TIME	20.0f
+#define FIRE_THINK_INTERVAL		0.1
+
+ConVar fire_maxabsorb( "fire_maxabsorb", "50" );
+ConVar fire_absorbrate( "fire_absorbrate", "3" );
+ConVar fire_extscale("fire_extscale", "12");
+ConVar fire_extabsorb("fire_extabsorb", "5");
+ConVar fire_heatscale( "fire_heatscale", "1.0" );
+ConVar fire_incomingheatscale( "fire_incomingheatscale", "0.1" );
+ConVar fire_dmgscale( "fire_dmgscale", "0.1" );
+ConVar fire_dmgbase( "fire_dmgbase", "1" );
+ConVar fire_growthrate( "fire_growthrate", "1.0" );
+ConVar fire_dmginterval( "fire_dmginterval", "1.0" );
+
+#define VPROF_FIRE(s) VPROF( s )
+
+class CFire : public CBaseEntity
+{
+public:
+	DECLARE_CLASS( CFire, CBaseEntity );
+	
+	int DrawDebugTextOverlays(void);
+
+	CFire( void );
+	
+	virtual void UpdateOnRemove( void );
+
+	void	Precache( void );
+	void	Init( const Vector &position, float scale, float attackTime, float fuel, int flags, int fireType );
+	bool	GoOut();
+	
+	void	BurnThink();
+	void	GoOutThink();
+	void	GoOutInSeconds( float seconds );
+
+	void	SetOwner( CBaseEntity *hOwner ) { m_hOwner = hOwner; }
+	
+	void	Scale( float end, float time );
+	void	AddHeat( float heat, bool selfHeat = false );
+	int		OnTakeDamage( const CTakeDamageInfo &info );
+
+	bool	IsBurning( void ) const;
+
+	bool	GetFireDimensions( Vector *pFireMins, Vector *pFireMaxs );
+	
+	void	Extinguish( float heat );
+	void	DestroyEffect();
+
+	virtual	void Update( float simTime );
+
+	void	Spawn( void );
+	void	Activate( void );
+	void	StartFire( void );
+	void	Start();
+	void	SetToOutSize()
+	{
+		UTIL_SetSize( this, Vector(-8,-8,0), Vector(8,8,8) );
+	}
+
+	float	GetHeatLevel()	{ return m_flHeatLevel; }
+
+	virtual int UpdateTransmitState();
+
+	void DrawDebugGeometryOverlays(void) 
+	{
+		if (m_debugOverlays & OVERLAY_BBOX_BIT) 
+		{	
+			if ( m_lastDamage > gpGlobals->curtime && m_flHeatAbsorb > 0 )
+			{
+				NDebugOverlay::EntityBounds(this, 88, 255, 128, 0 ,0);
+				char tempstr[512];
+				Q_snprintf( tempstr, sizeof(tempstr), "Heat: %.1f", m_flHeatAbsorb );
+				EntityText(1,tempstr, 0);
+			}
+			else if ( !IsBurning() )
+			{
+				NDebugOverlay::EntityBounds(this, 88, 88, 128, 0 ,0);
+			}
+
+			if ( IsBurning() )
+			{
+				Vector mins, maxs;
+				if ( GetFireDimensions( &mins, &maxs ) )
+				{
+					NDebugOverlay::Box(GetAbsOrigin(), mins, maxs, 128, 0, 0, 10, 0);
+				}
+			}
+
+
+		}
+		BaseClass::DrawDebugGeometryOverlays();
+	}
+
+	void Disable();
+
+	//Inputs
+	void	InputStartFire( inputdata_t &inputdata );
+	void	InputExtinguish( inputdata_t &inputdata );
+	void	InputExtinguishTemporary( inputdata_t &inputdata );
+	void	InputEnable( inputdata_t &inputdata );
+	void	InputDisable( inputdata_t &inputdata );
+
+protected:
+	
+	void	Spread( void );
+	void	SpawnEffect( fireType_e type, float scale );
+
+	CHandle<CBaseFire>	m_hEffect;
+	EHANDLE		m_hOwner;
+	
+	int		m_nFireType;
+
+	float	m_flFuel;
+	float	m_flDamageTime;
+	float	m_lastDamage;
+	float	m_flFireSize;	// size of the fire in world units
+
+	float	m_flHeatLevel;	// Used as a "health" for the fire.  > 0 means the fire is burning
+	float	m_flHeatAbsorb;	// This much heat must be "absorbed" before it gets transferred to the flame size
+	float	m_flDamageScale;
+
+	float	m_flMaxHeat;
+	float	m_flLastHeatLevel;
+
+	//NOTENOTE: Lifetime is an expression of the sum total of these amounts plus the global time when started
+	float	m_flAttackTime;	//Amount of time to scale up
+
+	bool	m_bEnabled;
+	bool	m_bStartDisabled;
+	bool	m_bDidActivate;
+
+
+	COutputEvent	m_OnIgnited;
+	COutputEvent	m_OnExtinguished;
+
+	DECLARE_DATADESC();
+};
+
+class CFireSphere : public IPartitionEnumerator
+{
+public:
+	CFireSphere( CFire **pList, int listMax, bool onlyActiveFires, const Vector &origin, float radius );
+	// This gets called	by the enumeration methods with each element
+	// that passes the test.
+	virtual IterationRetval_t EnumElement( IHandleEntity *pHandleEntity );
+	
+	int GetCount() { return m_count; }
+	bool AddToList( CFire *pEntity );
+
+private:
+	Vector			m_origin;
+	float			m_radiusSqr;
+	CFire			**m_pList;
+	int				m_listMax;
+	int				m_count;
+	bool			m_onlyActiveFires;
+};
+
+CFireSphere::CFireSphere( CFire **pList, int listMax, bool onlyActiveFires, const Vector &origin, float radius )
+{
+	m_pList = pList;
+	m_listMax = listMax;
+	m_count = 0;
+	m_onlyActiveFires = onlyActiveFires;
+	m_origin = origin;
+	m_radiusSqr = radius * radius;
+}
+
+bool CFireSphere::AddToList( CFire *pFire )
+{
+	if ( m_count >= m_listMax )
+		return false;
+	m_pList[m_count] = pFire;
+	m_count++;
+	return true;
+}
+
+IterationRetval_t CFireSphere::EnumElement( IHandleEntity *pHandleEntity )
+{
+	CBaseEntity *pEntity = gEntList.GetBaseEntity( pHandleEntity->GetRefEHandle() );
+	if ( pEntity )
+	{
+		// UNDONE: Measure which of these is faster
+//		CFire *pFire = dynamic_cast<CFire *>(pEntity);
+		if ( !FClassnameIs( pEntity, "env_fire" ) )
+			return ITERATION_CONTINUE;
+
+		CFire *pFire = static_cast<CFire *>(pEntity);
+		if ( pFire )
+		{
+			if ( !m_onlyActiveFires || pFire->IsBurning() )
+			{
+				if ( (m_origin - pFire->GetAbsOrigin()).LengthSqr() < m_radiusSqr )
+				{
+					if ( !AddToList( pFire ) )
+						return ITERATION_STOP;
+				}
+			}
+		}
+	}
+
+	return ITERATION_CONTINUE;
+}
+
+
+int FireSystem_GetFiresInSphere( CFire **pList, int listMax, bool onlyActiveFires, const Vector &origin, float radius )
+{
+	CFireSphere sphereEnum( pList, listMax, onlyActiveFires, origin, radius );
+	partition->EnumerateElementsInSphere( PARTITION_ENGINE_NON_STATIC_EDICTS, origin, radius, false, &sphereEnum );
+
+	return sphereEnum.GetCount();
+}
+
+
+bool FireSystem_IsValidFirePosition( const Vector &position, float testRadius )
+{
+	CFire *pList[1];
+	int count = FireSystem_GetFiresInSphere( pList, ARRAYSIZE(pList), true, position, testRadius );
+	if ( count > 0 )
+		return false;
+	return true;
+}
+
+
+//------------------------------------------------------------------------------
+// Purpose :
+// Input   :
+// Output  :
+//------------------------------------------------------------------------------
+bool FireSystem_IsFireInWall( Vector &position, fireType_e type )
+{
+	// Don't check natural fire against walls
+	if (type == FIRE_NATURAL)
+		return false;
+
+	trace_t tr;
+	UTIL_TraceHull( position, position+Vector(0,0,0.1), FIRE_MINS,FIRE_MAXS,MASK_SOLID, NULL, COLLISION_GROUP_NONE, &tr );
+	if (tr.fraction != 1.0 || tr.startsolid)
+	{
+		//NDebugOverlay::Box(position,FIRE_MINS,FIRE_MAXS,255,0,0,50,10);
+		return true;
+	}
+	//NDebugOverlay::Box(position,FIRE_MINS,FIRE_MAXS,0,255,0,50,10);
+
+	return false;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Determines whether or not a new fire may be placed at a given location
+// Input  : &position - where we are trying to put the new fire
+//			separationRadius - the maximum distance fires must be apart from one another
+// Output : Returns true on success, false on failure.
+//-----------------------------------------------------------------------------
+bool FireSystem_CanAddFire( Vector *position, float separationRadius, fireType_e type, int flags )
+{
+	//See if we found a fire inside the sphere
+	if ( !FireSystem_IsValidFirePosition( *position, separationRadius ) )
+		return false;
+
+	// Unless our fire is floating, make sure were not too high
+	if (!(flags & SF_FIRE_DONT_DROP))
+	{
+		trace_t	tr;
+		Vector	startpos = *position;
+		Vector	endpos = *position;
+
+		startpos[2] += 1;
+		endpos[2] -= FIRE_MAX_GROUND_OFFSET;
+
+		UTIL_TraceLine( startpos, endpos, MASK_SOLID, NULL, COLLISION_GROUP_NONE, &tr );
+
+		//See if we're floating too high 
+		if ( ( tr.allsolid ) || ( tr.startsolid) || ( tr.fraction == 1.0f ) )
+		{
+			return false;
+		}
+
+		//TODO: If we've hit an entity here, start it on fire
+		CBaseEntity *pEntity = tr.m_pEnt;
+
+		if ( ENTINDEX( pEntity->edict() ) != 0 )
+		{
+			return false;
+		}
+	}
+
+
+
+	// Check if fire is in a wall, if so try shifting around a bit
+	if (FireSystem_IsFireInWall( *position, type ))
+	{
+		Vector vTestPos = *position;
+		vTestPos.x		+= 10;
+		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))
+		{
+			*position = vTestPos;
+			return true;
+		}
+		vTestPos.y		+= 10;
+		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))
+		{
+			*position = vTestPos;
+			return true;
+		}
+		vTestPos.y		-= 20;
+		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))
+		{
+			*position = vTestPos;
+			return true;
+		}
+		vTestPos.x		-= 20;
+		if (FireSystem_IsValidFirePosition( vTestPos, separationRadius ) && !FireSystem_IsFireInWall( vTestPos, type ))
+		{
+			*position = vTestPos;
+			return true;
+		}
+		return false;
+	}
+
+	//Able to add here
+	return true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Starts a fire at a specified location
+// Input  : &position - position to start the fire at
+//			flags - any special modifiers
+//-----------------------------------------------------------------------------
+bool FireSystem_StartFire( const Vector &position, float fireHeight, float attack, float fuel, int flags, CBaseEntity *owner, fireType_e type )
+{
+	VPROF_FIRE( "FireSystem_StartFire1" );
+
+	Vector testPos = position;
+	//Must be okay to add fire here
+	if ( FireSystem_CanAddFire( &testPos, 16.0f, type, flags ) == false )
+	{
+		CFire *pFires[16];
+		int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), true, position, 16.0f );
+		for ( int i = 0; i < fireCount; i++ )
+		{
+			// add to this fire
+			pFires[i]->AddHeat( fireHeight, false );
+		}
+
+		return false;
+	}
+
+	//Create a new fire entity
+	CFire *fire = (CFire *) CreateEntityByName( "env_fire" );
+	
+	if ( fire == NULL )
+		return false;
+
+	//Spawn the fire
+	// Fires not placed by a designer should be cleaned up automatically (not catch fire again)
+	fire->AddSpawnFlags( SF_FIRE_DIE_PERMANENT );
+	fire->Spawn();
+	fire->Init( testPos, fireHeight, attack, fuel, flags, type );
+	fire->Start();
+	fire->SetOwner( owner );
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Starts a fire on a specified model.
+// Input  : pEntity - The model entity to catch on fire.
+//			fireHeight - 
+//			attack - 
+//			fuel - 
+//			flags - 
+//			owner - 
+//			type - 
+// Output : Returns true on success, false on failure.
+//-----------------------------------------------------------------------------
+bool FireSystem_StartFire( CBaseAnimating *pEntity, float fireHeight, float attack, float fuel, int flags, CBaseEntity *owner, fireType_e type )
+{
+	VPROF_FIRE( "FireSystem_StartFire2" );
+
+	Vector position = pEntity->GetAbsOrigin();
+	Vector testPos = position;
+
+	// Make sure its a valid position for fire (not in a wall, etc)
+	if ( FireSystem_CanAddFire( &testPos, 16.0f, type, flags ) == false )
+	{
+		// Contribute heat to all fires within 16 units of this fire.
+		CFire *pFires[16];
+		int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), true, position, 16.0f );
+		for ( int i = 0; i < fireCount; i++ )
+		{
+			pFires[i]->AddHeat( fireHeight, false );
+		}
+
+		return false;
+	}
+
+	// Create a new fire entity
+	CFire *fire = (CFire *) CreateEntityByName( "env_fire" );
+	if ( fire == NULL )
+	{
+		return false;
+	}
+
+	// Spawn the fire.
+	// Fires not placed by a designer should be cleaned up automatically (not catch fire again).
+	fire->AddSpawnFlags( SF_FIRE_DIE_PERMANENT );
+	fire->Spawn();
+	fire->Init( testPos, fireHeight, attack, fuel, flags, type );
+	fire->Start();
+	fire->SetOwner( owner );
+
+	return true;
+}
+
+
+void FireSystem_ExtinguishInRadius( const Vector &origin, float radius, float rate )
+{
+	// UNDONE: pass this instead of percent
+	float heat = (1-rate) * fire_extscale.GetFloat();
+
+	CFire *pFires[32];
+	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), false, origin, radius );
+	for ( int i = 0; i < fireCount; i++ )
+	{
+		pFires[i]->Extinguish( heat );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : &origin - 
+//			radius - 
+//			heat - 
+//-----------------------------------------------------------------------------
+void FireSystem_AddHeatInRadius( const Vector &origin, float radius, float heat )
+{
+	VPROF_FIRE( "FireSystem_AddHeatInRadius" );
+
+	CFire *pFires[32];
+
+	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), false, origin, radius );
+	for ( int i = 0; i < fireCount; i++ )
+	{
+		pFires[i]->AddHeat( heat );
+	}
+}
+
+//-----------------------------------------------------------------------------
+
+bool FireSystem_GetFireDamageDimensions( CBaseEntity *pEntity, Vector *pFireMins, Vector *pFireMaxs )
+{
+	CFire *pFire = dynamic_cast<CFire *>(pEntity);
+
+	if ( pFire && pFire->GetFireDimensions( pFireMins, pFireMaxs ) )
+	{
+		*pFireMins /= FIRE_SPREAD_DAMAGE_MULTIPLIER;
+		*pFireMaxs /= FIRE_SPREAD_DAMAGE_MULTIPLIER;
+		return true;
+	}
+	pFireMins->Init();
+	pFireMaxs->Init();
+	return false;
+}
+
+
+//==================================================
+// CFire
+//==================================================
+BEGIN_DATADESC( CFire )
+
+	DEFINE_FIELD( m_hEffect, FIELD_EHANDLE ),
+	DEFINE_FIELD( m_hOwner, FIELD_EHANDLE ),
+	DEFINE_KEYFIELD( m_nFireType,	FIELD_INTEGER, "firetype" ),
+
+	DEFINE_FIELD( m_flFuel, FIELD_FLOAT ),
+	DEFINE_FIELD( m_flDamageTime, FIELD_TIME ),
+	DEFINE_FIELD( m_lastDamage, FIELD_TIME ),
+	DEFINE_KEYFIELD( m_flFireSize,	FIELD_FLOAT, "firesize" ),
+
+	DEFINE_KEYFIELD( m_flHeatLevel,	FIELD_FLOAT,	"ignitionpoint" ),
+ 	DEFINE_FIELD( m_flHeatAbsorb, FIELD_FLOAT ),
+ 	DEFINE_KEYFIELD( m_flDamageScale,FIELD_FLOAT,	"damagescale" ),
+
+	DEFINE_FIELD( m_flMaxHeat, FIELD_FLOAT ),
+	//DEFINE_FIELD( m_flLastHeatLevel,	FIELD_FLOAT  ),
+
+	DEFINE_KEYFIELD( m_flAttackTime, FIELD_FLOAT, "fireattack" ),
+	DEFINE_FIELD( m_bEnabled, FIELD_BOOLEAN ),
+	DEFINE_KEYFIELD( m_bStartDisabled, FIELD_BOOLEAN, "StartDisabled" ),
+	DEFINE_FIELD( m_bDidActivate, FIELD_BOOLEAN ),
+
+	DEFINE_FUNCTION( BurnThink ),
+	DEFINE_FUNCTION( GoOutThink ),
+
+
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "StartFire", InputStartFire ),
+	DEFINE_INPUTFUNC( FIELD_FLOAT, "Extinguish", InputExtinguish ),
+	DEFINE_INPUTFUNC( FIELD_FLOAT, "ExtinguishTemporary", InputExtinguishTemporary ),
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),
+	
+	DEFINE_OUTPUT( m_OnIgnited, "OnIgnited" ),
+	DEFINE_OUTPUT( m_OnExtinguished, "OnExtinguished" ),
+
+END_DATADESC()
+
+LINK_ENTITY_TO_CLASS( env_fire, CFire );
+
+//==================================================
+// CFire
+//==================================================
+
+CFire::CFire( void )
+{
+	m_flFuel = 0.0f;
+	m_flAttackTime = 0.0f;
+	m_flDamageTime = 0.0f;
+	m_lastDamage = 0;
+	m_nFireType = FIRE_NATURAL;
+
+	//Spreading
+	m_flHeatAbsorb = 8.0f;
+	m_flHeatLevel = 0;
+
+	// Must be in the constructor!
+	AddEFlags( EFL_USE_PARTITION_WHEN_NOT_SOLID );
+}
+
+//-----------------------------------------------------------------------------
+// UpdateOnRemove
+//-----------------------------------------------------------------------------
+void CFire::UpdateOnRemove( void )
+{
+	//Stop any looping sounds that might be playing
+	StopSound( "Fire.Plasma" );
+
+	DestroyEffect();
+
+	// Chain at end to mimic destructor unwind order
+	BaseClass::UpdateOnRemove();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFire::Precache( void )
+{
+	if ( m_nFireType == FIRE_NATURAL )
+	{
+		UTIL_PrecacheOther("_firesmoke");
+		
+		if ( m_spawnflags & SF_FIRE_SMOKELESS )
+		{
+			PrecacheParticleSystem( "env_fire_tiny" );
+			PrecacheParticleSystem( "env_fire_small" );
+			PrecacheParticleSystem( "env_fire_medium" );
+			PrecacheParticleSystem( "env_fire_large" );
+		}
+		else
+		{
+			PrecacheParticleSystem( "env_fire_tiny_smoke" );
+			PrecacheParticleSystem( "env_fire_small_smoke" );
+			PrecacheParticleSystem( "env_fire_medium_smoke" );
+			PrecacheParticleSystem( "env_fire_large_smoke" );
+		}
+	}
+
+	if ( m_nFireType == FIRE_PLASMA )
+	{
+		UTIL_PrecacheOther("_plasma");
+	}
+
+	PrecacheScriptSound( "Fire.Plasma" );
+}
+
+//------------------------------------------------------------------------------
+// Purpose : Input handler for starting the fire.
+//------------------------------------------------------------------------------
+void CFire::InputStartFire( inputdata_t &inputdata )
+{
+	if ( !m_bEnabled )
+		return;
+
+	StartFire();
+}
+
+void CFire::InputEnable( inputdata_t &inputdata )
+{
+	m_bEnabled = true;
+}
+
+void CFire::InputDisable( inputdata_t &inputdata )
+{
+	Disable();
+}
+
+void CFire::Disable() 
+{
+	m_bEnabled = false;
+	if ( IsBurning() )
+	{
+		GoOut();
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : &inputdata - 
+//-----------------------------------------------------------------------------
+void CFire::InputExtinguish( inputdata_t &inputdata )
+{
+	m_spawnflags &= ~SF_FIRE_INFINITE;
+	GoOutInSeconds( inputdata.value.Float() );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : &inputdata - 
+//-----------------------------------------------------------------------------
+void CFire::InputExtinguishTemporary( inputdata_t &inputdata )
+{
+	GoOutInSeconds( inputdata.value.Float() );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Starts burning.
+//-----------------------------------------------------------------------------
+void CFire::StartFire( void )
+{
+	if ( m_hEffect != NULL )
+		return;
+
+	// Trace down and start a fire there. Nothing fancy yet.
+	Vector vFirePos;
+	trace_t tr;
+	if ( m_spawnflags & SF_FIRE_DONT_DROP )
+	{
+		vFirePos = GetAbsOrigin();
+	}
+	else
+	{
+		UTIL_TraceLine( GetAbsOrigin(), GetAbsOrigin() - Vector( 0, 0, 1024 ), MASK_FIRE_SOLID, this, COLLISION_GROUP_NONE, &tr );
+		vFirePos = tr.endpos;
+	}
+
+	int spawnflags = m_spawnflags;
+	m_spawnflags |= SF_FIRE_START_ON;
+	Init( vFirePos, m_flFireSize, m_flAttackTime, GetHealth(), m_spawnflags, (fireType_e) m_nFireType );
+	Start();
+	m_spawnflags = spawnflags;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFire::Spawn( void )
+{
+	BaseClass::Spawn();
+
+	Precache();
+
+	m_takedamage = DAMAGE_NO;
+
+	SetSolid( SOLID_NONE );
+	AddEffects( EF_NODRAW );
+	SetToOutSize();
+
+	// set up the ignition point
+	m_flHeatAbsorb = m_flHeatLevel * 0.05;
+	m_flHeatLevel = 0;
+	Init( GetAbsOrigin(), m_flFireSize, m_flAttackTime, m_flFuel, m_spawnflags, m_nFireType );
+	
+	if( m_bStartDisabled )
+	{
+		Disable();
+	}
+	else
+	{
+		m_bEnabled = true;
+	}
+}
+
+int CFire::UpdateTransmitState()
+{
+	// Don't want to be FL_EDICT_DONTSEND because our fire entity may make us transmit.
+	return SetTransmitState( FL_EDICT_ALWAYS );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFire::Activate( void )
+{
+	BaseClass::Activate();
+	
+	//See if we should start active
+	if ( !m_bDidActivate && ( m_spawnflags & SF_FIRE_START_ON ) )
+	{
+		m_flHeatLevel = m_flMaxHeat;
+
+		StartFire();
+	}
+
+	m_bDidActivate = true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFire::SpawnEffect( fireType_e type, float scale )
+{
+	CBaseFire *pEffect = NULL;
+	switch ( type )
+	{
+	default:
+	case FIRE_NATURAL:
+		{
+			CFireSmoke	*fireSmoke = (CFireSmoke *) CreateEntityByName( "_firesmoke" );
+			fireSmoke->EnableSmoke( ( m_spawnflags & SF_FIRE_SMOKELESS )==false );
+			fireSmoke->EnableGlow( ( m_spawnflags & SF_FIRE_NO_GLOW )==false );
+			fireSmoke->EnableVisibleFromAbove( ( m_spawnflags & SF_FIRE_VISIBLE_FROM_ABOVE )!=false );
+			
+			pEffect			= fireSmoke;
+			m_nFireType		= FIRE_NATURAL;
+			m_takedamage	= DAMAGE_YES;
+		}
+		break;
+
+	case FIRE_PLASMA:
+		{
+			CPlasma	*plasma = (CPlasma *) CreateEntityByName( "_plasma" );
+			plasma->EnableSmoke( true );
+		
+			pEffect			= plasma;
+			m_nFireType		= FIRE_PLASMA;
+			m_takedamage	= DAMAGE_YES;
+
+			// Start burn sound
+			EmitSound( "Fire.Plasma" );
+		}
+		break;
+	}
+
+	UTIL_SetOrigin( pEffect, GetAbsOrigin() );
+	pEffect->Spawn();
+	pEffect->SetParent( this );
+	pEffect->Scale( m_flFireSize, m_flFireSize, 0 );
+	//Start it going
+	pEffect->Enable( ( m_spawnflags & SF_FIRE_START_ON ) );
+	m_hEffect = pEffect;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Spawn and initialize the fire
+// Input  : &position - where the fire resides
+//			lifetime - 
+//-----------------------------------------------------------------------------
+void CFire::Init( const Vector &position, float scale, float attackTime, float fuel, int flags, int fireType )
+{
+	m_flAttackTime = attackTime;
+	
+	m_spawnflags = flags;
+	m_nFireType = fireType;
+
+	if ( flags & SF_FIRE_INFINITE )
+	{
+		fuel = 0;
+	}
+	m_flFuel = fuel;
+	if ( m_flFuel )
+	{
+		m_spawnflags |= SF_FIRE_DIE_PERMANENT;
+	}
+
+	Vector localOrigin = position;
+	if ( GetMoveParent() )
+	{
+		EntityMatrix parentMatrix;
+		parentMatrix.InitFromEntity( GetMoveParent() );
+		localOrigin = parentMatrix.WorldToLocal( position );
+	}
+	UTIL_SetOrigin( this, localOrigin );
+
+	SetSolid( SOLID_NONE );
+	m_flFireSize = scale;
+	m_flMaxHeat = FIRE_MAX_HEAT_LEVEL * FIRE_SCALE_FROM_SIZE(scale);
+	//See if we should start on
+	if ( m_spawnflags & SF_FIRE_START_FULL )
+	{
+		m_flHeatLevel = m_flMaxHeat;
+	}
+	m_flLastHeatLevel = 0;
+
+}
+
+void CFire::Start()
+{
+	float boxWidth = (m_flFireSize * (FIRE_WIDTH/FIRE_HEIGHT))*0.5f;
+	UTIL_SetSize(this, Vector(-boxWidth,-boxWidth,0),Vector(boxWidth,boxWidth,m_flFireSize));
+
+	//Spawn the client-side effect
+	SpawnEffect( (fireType_e)m_nFireType, FIRE_SCALE_FROM_SIZE(m_flFireSize) );
+	m_OnIgnited.FireOutput( this, this );
+	SetThink( &CFire::BurnThink );
+	m_flDamageTime = 0;
+	// think right now
+	BurnThink();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Determines whether or not the fire is still active
+// Output : Returns true on success, false on failure.
+//-----------------------------------------------------------------------------
+bool CFire::IsBurning( void ) const
+{
+	if ( m_flHeatLevel > 0 )
+		return true;
+
+	return false;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Get the damage box of the fire
+//-----------------------------------------------------------------------------
+bool CFire::GetFireDimensions( Vector *pFireMins, Vector *pFireMaxs )
+{
+	if ( m_flHeatLevel <= 0 )
+	{
+		pFireMins->Init();
+		pFireMaxs->Init();
+		return false;
+	}
+
+	float scale = m_flHeatLevel / m_flMaxHeat;
+	float damageRadius = scale * m_flFireSize * FIRE_WIDTH / FIRE_HEIGHT * 0.5;	
+
+	damageRadius *= FIRE_SPREAD_DAMAGE_MULTIPLIER; //FIXME: Trying slightly larger radius for burning
+
+	if ( damageRadius < 16 )
+	{
+		damageRadius = 16;
+	}
+
+	pFireMins->Init(-damageRadius,-damageRadius,0);
+	pFireMaxs->Init(damageRadius,damageRadius,m_flFireSize*scale);
+
+	return true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Update the fire and its children
+//-----------------------------------------------------------------------------
+void CFire::Update( float simTime )
+{
+	VPROF_FIRE( "CFire::Update" );
+
+	if ( m_flFuel != 0 )
+	{
+		m_flFuel -= simTime;
+		if ( m_flFuel <= 0 )
+		{
+			GoOutInSeconds( 1 );
+			return;
+		}
+	}
+
+	float strength = m_flHeatLevel / FIRE_MAX_HEAT_LEVEL;
+	if ( m_flHeatLevel != m_flLastHeatLevel )
+	{
+		m_flLastHeatLevel = m_flHeatLevel;
+		// Make the effect the appropriate size given the heat level
+		m_hEffect->Scale( strength, 0.5f );		
+	}
+	// add heat to myself (grow)
+	float addedHeat = (m_flAttackTime > 0) ? m_flMaxHeat / m_flAttackTime : m_flMaxHeat;
+	addedHeat *= simTime * fire_growthrate.GetFloat();
+	AddHeat( addedHeat, true );
+
+	// add heat to nearby fires
+	float outputHeat = strength * m_flHeatLevel;
+
+	Vector fireMins;
+	Vector fireMaxs;
+	Vector fireEntityDamageMins;
+	Vector fireEntityDamageMaxs;
+
+	GetFireDimensions( &fireMins, &fireMaxs );
+
+	if ( FIRE_SPREAD_DAMAGE_MULTIPLIER != 1.0 ) // if set to 1.0, optimizer will remove this code
+	{
+		fireEntityDamageMins = fireMins / FIRE_SPREAD_DAMAGE_MULTIPLIER;
+		fireEntityDamageMaxs = fireMaxs / FIRE_SPREAD_DAMAGE_MULTIPLIER;
+	}
+
+	//NDebugOverlay::Box( GetAbsOrigin(), fireMins, fireMaxs, 255, 255, 255, 0, fire_dmginterval.GetFloat() );
+	fireMins += GetAbsOrigin();
+	fireMaxs += GetAbsOrigin();
+
+	if ( FIRE_SPREAD_DAMAGE_MULTIPLIER != 1.0 )
+	{
+		fireEntityDamageMins += GetAbsOrigin();
+		fireEntityDamageMaxs += GetAbsOrigin();
+	}
+
+	CBaseEntity *pNearby[256];
+	CFire *pFires[16];
+	int nearbyCount = UTIL_EntitiesInBox( pNearby, ARRAYSIZE(pNearby), fireMins, fireMaxs, 0 );
+	int fireCount = 0;
+	int i;
+
+	// is it time to do damage?
+	bool damage = false;
+	int outputDamage = 0;
+	if ( m_flDamageTime <= gpGlobals->curtime )
+	{
+		m_flDamageTime = gpGlobals->curtime + fire_dmginterval.GetFloat();
+		outputDamage = (fire_dmgbase.GetFloat() + outputHeat * fire_dmgscale.GetFloat() * m_flDamageScale) * fire_dmginterval.GetFloat();
+		if ( outputDamage )
+		{
+			damage = true;
+		}
+	}
+	int damageFlags = (m_nFireType == FIRE_NATURAL) ? DMG_BURN : DMG_PLASMA;
+	for ( i = 0; i < nearbyCount; i++ )
+	{
+		CBaseEntity *pOther = pNearby[i];
+
+		if ( pOther == this )
+		{
+			continue;
+		}
+		else if ( FClassnameIs( pOther, "env_fire" ) )
+		{
+			if ( fireCount < ARRAYSIZE(pFires) )
+			{
+				pFires[fireCount] = (CFire *)pOther;
+				fireCount++;
+			}
+			continue;
+		}
+		else if ( pOther->m_takedamage == DAMAGE_NO )
+		{
+			pNearby[i] = NULL;
+		}
+		else if ( damage )
+		{
+			bool bDoDamage;
+
+			if ( FIRE_SPREAD_DAMAGE_MULTIPLIER != 1.0 && !pOther->IsPlayer() ) // if set to 1.0, optimizer will remove this code
+			{
+				Vector otherMins, otherMaxs;
+				pOther->CollisionProp()->WorldSpaceAABB( &otherMins, &otherMaxs );
+				bDoDamage = IsBoxIntersectingBox( otherMins, otherMaxs, 
+												  fireEntityDamageMins, fireEntityDamageMaxs );
+
+			}
+			else
+				bDoDamage = true;
+
+			if ( bDoDamage )
+			{
+				// Make sure can actually see entity (don't damage through walls)
+				trace_t tr;
+				UTIL_TraceLine( this->WorldSpaceCenter(), pOther->WorldSpaceCenter(), MASK_FIRE_SOLID, pOther, COLLISION_GROUP_NONE, &tr );
+
+				if (tr.fraction == 1.0 && !tr.startsolid)
+				{
+					pOther->TakeDamage( CTakeDamageInfo( this, this, outputDamage, damageFlags ) );
+				}
+			}
+		}
+	}
+
+	outputHeat *= fire_heatscale.GetFloat() * simTime;
+
+	if ( fireCount > 0 )
+	{
+		outputHeat /= fireCount;
+		for ( i = 0; i < fireCount; i++ )
+		{
+			pFires[i]->AddHeat( outputHeat, false );
+		}
+	}
+}
+
+// Destroy any effect I have
+void CFire::DestroyEffect()
+{
+	CBaseFire *pEffect = m_hEffect;
+	if ( pEffect != NULL )
+	{
+		//disable the graphics and remove the entity
+		pEffect->Enable( false );
+		UTIL_Remove( pEffect );
+	}
+}
+//-----------------------------------------------------------------------------
+// Purpose: Think
+//-----------------------------------------------------------------------------
+void CFire::BurnThink( void )
+{
+	SetNextThink( gpGlobals->curtime + FIRE_THINK_INTERVAL );
+
+	Update( FIRE_THINK_INTERVAL );
+}
+
+void CFire::GoOutThink()
+{
+	GoOut();
+}
+
+void CFire::GoOutInSeconds( float seconds )
+{
+	Scale( 0.0f, seconds );
+	
+	SetThink( &CFire::GoOutThink );
+	SetNextThink( gpGlobals->curtime + seconds );
+}
+
+//------------------------------------------------------------------------------
+// Purpose : Blasts of significant size blow out fires that take damage
+// Input   :
+// Output  :
+//------------------------------------------------------------------------------
+int CFire::OnTakeDamage( const CTakeDamageInfo &info )
+{
+	return 0;
+}
+
+void CFire::AddHeat( float heat, bool selfHeat )
+{
+	if ( m_bEnabled )
+	{
+		if ( !selfHeat )
+		{
+			if ( IsBurning() )
+			{
+				// scale back the incoming heat from surrounding fires
+				// if I've already ignited
+				heat *= fire_incomingheatscale.GetFloat();
+			}
+		}
+		m_lastDamage = gpGlobals->curtime + 0.5;
+		bool start = m_flHeatLevel <= 0 ? true : false;
+		if ( m_flHeatAbsorb > 0 )
+		{
+			float absorbDamage = heat * fire_absorbrate.GetFloat();
+			if ( absorbDamage > m_flHeatAbsorb )
+			{
+				heat -= m_flHeatAbsorb / fire_absorbrate.GetFloat();
+				m_flHeatAbsorb = 0;
+			}
+			else
+			{
+				m_flHeatAbsorb -= absorbDamage;
+				heat = 0;
+			}
+		}
+
+		m_flHeatLevel += heat;
+		if ( start && m_flHeatLevel > 0 && m_hEffect == NULL )
+		{
+			StartFire();
+		}
+		if ( m_flHeatLevel > m_flMaxHeat )
+			m_flHeatLevel = m_flMaxHeat;
+	}
+}
+
+	
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : end - 
+//			time - 
+//-----------------------------------------------------------------------------
+void CFire::Scale( float end, float time )
+{
+	CBaseFire *pEffect = m_hEffect;
+	if ( pEffect )
+	{
+		pEffect->Scale( end, time );
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : time - 
+//-----------------------------------------------------------------------------
+void CFire::Extinguish( float heat )
+{
+	if ( !m_bEnabled )
+		return;
+
+	m_lastDamage = gpGlobals->curtime + 0.5;
+	bool out = m_flHeatLevel > 0 ? true : false;
+
+	m_flHeatLevel -= heat;
+	m_flHeatAbsorb += fire_extabsorb.GetFloat() * heat;
+	if ( m_flHeatAbsorb > fire_maxabsorb.GetFloat() )
+	{
+		m_flHeatAbsorb = fire_maxabsorb.GetFloat();
+	}
+
+	// drift toward the average attack time after being sprayed
+	// some fires are heavily scripted so their attack looks weird 
+	// once interacted with.  Basically, this blends out the scripting 
+	// as the fire is sprayed with the extinguisher.
+	float averageAttackTime = m_flMaxHeat * (FIRE_NORMAL_ATTACK_TIME/FIRE_MAX_HEAT_LEVEL);
+	m_flAttackTime = Approach( averageAttackTime, m_flAttackTime, 2 * gpGlobals->frametime );
+
+	if ( m_flHeatLevel <= 0 )
+	{
+		m_flHeatLevel = 0;
+		if ( out )
+		{
+			GoOut();
+		}
+	}
+}
+
+bool CFire::GoOut()
+{
+	//Signal death
+	m_OnExtinguished.FireOutput( this, this );
+
+	DestroyEffect();
+	m_flHeatLevel -= 20;
+	if ( m_flHeatLevel > 0 )
+		m_flHeatLevel = 0;
+
+	m_flLastHeatLevel = m_flHeatLevel; 
+	SetThink(NULL);
+	SetNextThink( TICK_NEVER_THINK );
+	if ( m_spawnflags & SF_FIRE_DIE_PERMANENT )
+	{
+		UTIL_Remove( this );
+		return true;
+	}
+	SetToOutSize();
+	
+	return false;
+}
+
+//==================================================
+// CEnvFireSource is a source of heat that the player 
+// cannot put out
+//==================================================
+
+#define FIRESOURCE_THINK_TIME		0.25		// seconds to 
+
+#define SF_FIRESOURCE_START_ON		0x0001
+
+class CEnvFireSource : public CBaseEntity
+{
+	DECLARE_CLASS( CEnvFireSource, CBaseEntity );
+public:
+	void Spawn();
+	void Think();
+	void TurnOn();
+	void TurnOff();
+	void InputEnable( inputdata_t &inputdata );
+	void InputDisable( inputdata_t &inputdata );
+
+	DECLARE_DATADESC();
+
+private:
+	bool		m_bEnabled;
+	float		m_radius;
+	float		m_damage;
+};
+
+BEGIN_DATADESC( CEnvFireSource )
+
+	DEFINE_FIELD( m_bEnabled, FIELD_BOOLEAN ),
+	DEFINE_KEYFIELD( m_radius,	FIELD_FLOAT, "fireradius" ),
+	DEFINE_KEYFIELD( m_damage,FIELD_FLOAT, "firedamage" ),
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),
+
+
+END_DATADESC()
+
+LINK_ENTITY_TO_CLASS( env_firesource, CEnvFireSource );
+
+void CEnvFireSource::Spawn()
+{
+	if ( m_spawnflags & SF_FIRESOURCE_START_ON )
+	{
+		TurnOn();
+	}
+	else
+	{
+		TurnOff();
+	}
+}
+
+void CEnvFireSource::Think()
+{
+	if ( !m_bEnabled )
+		return;
+	SetNextThink( gpGlobals->curtime + FIRESOURCE_THINK_TIME );
+
+	CFire *pFires[128];
+	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), false, GetAbsOrigin(), m_radius );
+
+	for ( int i = 0; i < fireCount; i++ )
+	{
+		pFires[i]->AddHeat( m_damage * FIRESOURCE_THINK_TIME );
+	}
+}
+
+void CEnvFireSource::TurnOn()
+{
+	if ( m_bEnabled )
+		return;
+
+	m_bEnabled = true;
+	SetNextThink( gpGlobals->curtime );
+}
+
+void CEnvFireSource::TurnOff()
+{
+	if ( !m_bEnabled )
+		return;
+
+	m_bEnabled = false;
+	SetNextThink( TICK_NEVER_THINK );
+}
+void CEnvFireSource::InputEnable( inputdata_t &inputdata )
+{
+	TurnOn();
+}
+void CEnvFireSource::InputDisable( inputdata_t &inputdata )
+{
+	TurnOff();
+}
+
+//==================================================
+// CEnvFireSensor detects changes in heat
+//==================================================
+#define SF_FIRESENSOR_START_ON	1
+
+class CEnvFireSensor : public CBaseEntity
+{
+	DECLARE_CLASS( CEnvFireSensor, CBaseEntity );
+public:
+	void Spawn();
+	void Think();
+	void TurnOn();
+	void TurnOff();
+	void InputEnable( inputdata_t &inputdata );
+	void InputDisable( inputdata_t &inputdata );
+
+	DECLARE_DATADESC();
+
+private:
+	bool			m_bEnabled;
+	bool			m_bHeatAtLevel;
+	float			m_radius;
+	float			m_targetLevel;
+	float			m_targetTime;
+	float			m_levelTime;
+
+	COutputEvent	m_OnHeatLevelStart;
+	COutputEvent	m_OnHeatLevelEnd;
+};
+
+BEGIN_DATADESC( CEnvFireSensor )
+
+	DEFINE_KEYFIELD( m_radius,	FIELD_FLOAT, "fireradius" ),
+	DEFINE_KEYFIELD( m_targetLevel, FIELD_FLOAT, "heatlevel" ),
+	DEFINE_KEYFIELD( m_targetTime, FIELD_FLOAT, "heattime" ),
+
+	DEFINE_FIELD( m_bEnabled, FIELD_BOOLEAN ),
+	DEFINE_FIELD( m_bHeatAtLevel, FIELD_BOOLEAN ),
+	DEFINE_FIELD( m_levelTime, FIELD_FLOAT ),
+	
+	DEFINE_INPUTFUNC( FIELD_VOID, "Enable", InputEnable ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "Disable", InputDisable ),
+
+	DEFINE_OUTPUT( m_OnHeatLevelStart, "OnHeatLevelStart"),
+	DEFINE_OUTPUT( m_OnHeatLevelEnd, "OnHeatLevelEnd"),
+
+END_DATADESC()
+
+LINK_ENTITY_TO_CLASS( env_firesensor, CEnvFireSensor );
+
+void CEnvFireSensor::Spawn()
+{
+	if ( m_spawnflags & SF_FIRESENSOR_START_ON )
+	{
+		TurnOn();
+	}
+	else
+	{
+		TurnOff();
+	}
+}
+
+void CEnvFireSensor::Think()
+{
+	if ( !m_bEnabled )
+		return;
+
+	float time = m_targetTime * 0.25;
+	if ( time < 0.1 )
+	{
+		time = 0.1;
+	}
+	SetNextThink( gpGlobals->curtime + time );
+
+	float heat = 0;
+	CFire *pFires[128];
+	int fireCount = FireSystem_GetFiresInSphere( pFires, ARRAYSIZE(pFires), true, GetAbsOrigin(), m_radius );
+	for ( int i = 0; i < fireCount; i++ )
+	{
+		heat += pFires[i]->GetHeatLevel();
+	}
+
+	if ( heat >= m_targetLevel )
+	{
+		m_levelTime += time;
+		if ( m_levelTime >= m_targetTime )
+		{
+			if ( !m_bHeatAtLevel )
+			{
+				m_bHeatAtLevel = true;
+				m_OnHeatLevelStart.FireOutput( this, this );
+			}
+		}
+	}
+	else
+	{
+		m_levelTime = 0;
+		if ( m_bHeatAtLevel )
+		{
+			m_bHeatAtLevel = false;
+			m_OnHeatLevelEnd.FireOutput( this, this );
+		}
+	}
+}
+
+void CEnvFireSensor::TurnOn()
+{
+	if ( m_bEnabled )
+		return;
+
+	m_bEnabled = true;
+	SetNextThink( gpGlobals->curtime );
+	m_bHeatAtLevel = false;
+	m_levelTime = 0;
+}
+
+void CEnvFireSensor::TurnOff()
+{
+	if ( !m_bEnabled )
+		return;
+
+	m_bEnabled = false;
+	SetNextThink( TICK_NEVER_THINK );
+	if ( m_bHeatAtLevel )
+	{
+		m_bHeatAtLevel = false;
+		m_OnHeatLevelEnd.FireOutput( this, this );
+	}
+
+}
+void CEnvFireSensor::InputEnable( inputdata_t &inputdata )
+{
+	TurnOn();
+}
+void CEnvFireSensor::InputDisable( inputdata_t &inputdata )
+{
+	TurnOff();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Draw any debug text overlays
+// Output : Current text offset from the top
+//-----------------------------------------------------------------------------
+int CFire::DrawDebugTextOverlays( void ) 
+{
+	int text_offset = BaseClass::DrawDebugTextOverlays();
+
+	if (m_debugOverlays & OVERLAY_TEXT_BIT) 
+	{
+		char tempstr[512];
+
+		// print flame size
+		Q_snprintf(tempstr,sizeof(tempstr),"    size: %f", m_flFireSize);
+		EntityText(text_offset,tempstr,0);
+		text_offset++;
+	}
+	return text_offset;
+}