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dlls/smoke_trail.cpp

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	DEFINE_KEYFIELD( m_SpawnRadius, FIELD_FLOAT, "spawnradius" ),
	DEFINE_FIELD( m_bEmit, FIELD_BOOLEAN ),
	DEFINE_FIELD( m_nAttachment, FIELD_INTEGER ),

END_DATADESC()

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	DEFINE_KEYFIELD( m_SpawnRadius, FIELD_FLOAT, "spawnradius" ),
	DEFINE_FIELD( m_bEmit, FIELD_BOOLEAN ),
	DEFINE_FIELD( m_nAttachment, FIELD_INTEGER ),
	DEFINE_THINKFUNC( Think ),

END_DATADESC()

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		m_nAttachment = 0;
	}

	BaseClass::FollowEntity( pEntity );
}


//==================================================
// RocketTrail
//==================================================
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		m_nAttachment = 0;
	}

	SetThink( &SmokeTrail::Think );
	SetNextThink( gpGlobals->curtime );

	BaseClass::FollowEntity( pEntity );
}

//-----------------------------------------------------------------------------
// Purpose: Kill the trail if in water and do bubbles
//-----------------------------------------------------------------------------
void SmokeTrail::Think( void )
{
	// A smoke trail dies when the object 
	// it is attached to goes into water

	if( GetFollowedEntity() )
	{
		if( GetFollowedEntity()->GetWaterLevel() != 0 )
		{
			if( m_bEmit )
				SetEmit( false );

			// If we're going slow enough, don't do bubbles anymore
			// Also make sure we're still underwater and haven't bounced out
			if( ( GetFollowedEntity()->GetAbsVelocity() != vec3_origin ) && ( UTIL_PointContents( GetFollowedEntity()->GetAbsOrigin() ) & MASK_WATER ) )
			{
				// Do bubbles!
				UTIL_Bubbles( GetFollowedEntity()->GetAbsOrigin() - Vector( 16, 16, 16 ), GetFollowedEntity()->GetAbsOrigin() + Vector( 16, 16, 16 ), random->RandomInt( 3, 8 ) );
			}			

			// Think slower underwater
			SetNextThink( gpGlobals->curtime + random->RandomFloat( 0.1f, 0.4f ) );
		}
		else
		{
			// Set next time to think. Not underwater
			// yet so keep spamming the think function
			SetNextThink( gpGlobals->curtime );
		}		
	}	
}

//==================================================
// RocketTrail
//==================================================

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	DEFINE_FIELD( m_nAttachment, FIELD_INTEGER ),
	DEFINE_FIELD( m_bDamaged, FIELD_BOOLEAN ),
	DEFINE_FIELD( m_flFlareScale, FIELD_FLOAT ),

END_DATADESC()

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	DEFINE_FIELD( m_nAttachment, FIELD_INTEGER ),
	DEFINE_FIELD( m_bDamaged, FIELD_BOOLEAN ),
	DEFINE_FIELD( m_flFlareScale, FIELD_FLOAT ),
	DEFINE_THINKFUNC( Think ),

END_DATADESC()

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		m_nAttachment = 0;
	}

	BaseClass::FollowEntity( pEntity );
}

//==================================================
// SporeTrail
//==================================================
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		m_nAttachment = 0;
	}

	SetThink( &RocketTrail::Think );
	SetNextThink( gpGlobals->curtime );

	BaseClass::FollowEntity( pEntity );
}

//-----------------------------------------------------------------------------
// Purpose: Kill the trail if in water and do bubbles
//-----------------------------------------------------------------------------
void RocketTrail::Think( void )
{
	// A rocket trail dies when the object 
	// it is attached to goes into water but
	// will restart if that object comes out
	// of water

	if( GetFollowedEntity() )
	{
		if( GetFollowedEntity()->GetWaterLevel() != 0 )
		{
			if( m_bEmit )
				SetEmit( false );

			// Make sure we're still under water... since we
			// think slower we might have left the water and
			// are now airborn (so therefore we don't want
			// bubbles being made!)
			if( UTIL_PointContents( GetFollowedEntity()->GetAbsOrigin() ) & MASK_WATER )
			{
				// Do bubbles!
				UTIL_Bubbles( GetFollowedEntity()->GetAbsOrigin() - Vector( 16, 16, 16 ), GetFollowedEntity()->GetAbsOrigin() + Vector( 16, 16, 16 ), random->RandomInt( 3, 8 ) );
			}			

			// Think slower underwater
			SetNextThink( gpGlobals->curtime + random->RandomFloat( 0.1f, 0.4f ) );
		}
		else
		{
			// Turn on the trail, we're leaving water
			if( !m_bEmit )
				SetEmit( true );

			// Set next time to think
			SetNextThink( gpGlobals->curtime );
		}		
	}
	else
	{
		// If we're not following an entity, remove self
		// See if this helps the rogue rocket trails at all
		SetThink(&RocketTrail::SUB_Remove);
		SetNextThink(gpGlobals->curtime);
	}
}

//==================================================
// SporeTrail
//==================================================