Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: Flame entity to be attached to target entity. Serves two purposes:
//
// 1) An entity that can be placed by a level designer and triggered
// to ignite a target entity.
//
// 2) An entity that can be created at runtime to ignite a target entity.
//
//=============================================================================//
#include "cbase.h"
#include "EntityFlame.h"
#include "ai_basenpc.h"
#include "fire.h"
#include "shareddefs.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
BEGIN_DATADESC( CEntityFlame )
DEFINE_KEYFIELD( m_flLifetime, FIELD_FLOAT, "lifetime" ),
DEFINE_FIELD( m_flSize, FIELD_FLOAT ),
DEFINE_FIELD( m_hEntAttached, FIELD_EHANDLE ),
DEFINE_FIELD( m_bUseHitboxes, FIELD_BOOLEAN ),
DEFINE_FIELD( m_iNumHitboxFires, FIELD_INTEGER ),
DEFINE_FIELD( m_flHitboxFireScale, FIELD_FLOAT ),
// DEFINE_FIELD( m_bPlayingSound, FIELD_BOOLEAN ),
DEFINE_FUNCTION( FlameThink ),
DEFINE_INPUTFUNC( FIELD_VOID, "Ignite", InputIgnite ),
END_DATADESC()
IMPLEMENT_SERVERCLASS_ST( CEntityFlame, DT_EntityFlame )
SendPropEHandle( SENDINFO( m_hEntAttached ) ),
END_SEND_TABLE()
LINK_ENTITY_TO_CLASS( entityflame, CEntityFlame );
LINK_ENTITY_TO_CLASS( env_entity_igniter, CEntityFlame );
PRECACHE_REGISTER(entityflame);
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
CEntityFlame::CEntityFlame( void )
{
m_flSize = 0.0f;
m_iNumHitboxFires = 10;
m_flHitboxFireScale = 1.0f;
m_flLifetime = 0.0f;
m_bPlayingSound = false;
}
void CEntityFlame::UpdateOnRemove()
{
// Sometimes the entity I'm burning gets destroyed by other means,
// which kills me. Make sure to stop the burning sound.
if ( m_bPlayingSound )
{
EmitSound( "General.StopBurning" );
m_bPlayingSound = false;
}
BaseClass::UpdateOnRemove();
}
void CEntityFlame::Precache()
{
BaseClass::Precache();
PrecacheScriptSound( "General.StopBurning" );
PrecacheScriptSound( "General.BurningFlesh" );
PrecacheScriptSound( "General.BurningObject" );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : inputdata -
//-----------------------------------------------------------------------------
void CEntityFlame::InputIgnite( inputdata_t &inputdata )
{
if (m_target != NULL_STRING)
{
CBaseEntity *pTarget = NULL;
while ((pTarget = gEntList.FindEntityGeneric(pTarget, STRING(m_target), this, inputdata.pActivator)) != NULL)
{
// Combat characters know how to catch themselves on fire.
CBaseCombatCharacter *pBCC = pTarget->MyCombatCharacterPointer();
if (pBCC)
{
// DVS TODO: consider promoting Ignite to CBaseEntity and doing everything here
pBCC->Ignite(m_flLifetime);
}
// Everything else, we handle here.
else
{
CEntityFlame *pFlame = CEntityFlame::Create(pTarget);
if (pFlame)
{
pFlame->SetLifetime(m_flLifetime);
}
}
}
}
}
//-----------------------------------------------------------------------------
// Purpose: Creates a flame and attaches it to a target entity.
// Input : pTarget -
//-----------------------------------------------------------------------------
CEntityFlame *CEntityFlame::Create( CBaseEntity *pTarget, bool useHitboxes )
{
CEntityFlame *pFlame = (CEntityFlame *) CreateEntityByName( "entityflame" );
if ( pFlame == NULL )
return NULL;
float xSize = pTarget->CollisionProp()->OBBMaxs().x - pTarget->CollisionProp()->OBBMins().x;
float ySize = pTarget->CollisionProp()->OBBMaxs().y - pTarget->CollisionProp()->OBBMins().y;
float size = ( xSize + ySize ) * 0.5f;
if ( size < 16.0f )
{
size = 16.0f;
}
UTIL_SetOrigin( pFlame, pTarget->GetAbsOrigin() );
pFlame->m_flSize = size;
pFlame->SetThink( &CEntityFlame::FlameThink );
pFlame->SetNextThink( gpGlobals->curtime + 0.1f );
pFlame->AttachToEntity( pTarget );
pFlame->SetLifetime( 2.0f );
//Send to the client even though we don't have a model
pFlame->AddEFlags( EFL_FORCE_CHECK_TRANSMIT );
pFlame->SetUseHitboxes( useHitboxes );
return pFlame;
}
//-----------------------------------------------------------------------------
// Purpose: Attaches the flame to an entity and moves with it
// Input : pTarget - target entity to attach to
//-----------------------------------------------------------------------------
void CEntityFlame::AttachToEntity( CBaseEntity *pTarget )
{
// For networking to the client.
m_hEntAttached = pTarget;
if( pTarget->IsNPC() )
{
EmitSound( "General.BurningFlesh" );
}
else
{
EmitSound( "General.BurningObject" );
}
m_bPlayingSound = true;
// So our heat emitter follows the entity around on the server.
SetParent( pTarget );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : lifetime -
//-----------------------------------------------------------------------------
void CEntityFlame::SetLifetime( float lifetime )
{
m_flLifetime = gpGlobals->curtime + lifetime;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : use -
//-----------------------------------------------------------------------------
void CEntityFlame::SetUseHitboxes( bool use )
{
m_bUseHitboxes = use;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : iNumHitBoxFires -
//-----------------------------------------------------------------------------
void CEntityFlame::SetNumHitboxFires( int iNumHitboxFires )
{
m_iNumHitboxFires = iNumHitboxFires;
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : flHitboxFireScale -
//-----------------------------------------------------------------------------
void CEntityFlame::SetHitboxFireScale( float flHitboxFireScale )
{
m_flHitboxFireScale = flHitboxFireScale;
}
float CEntityFlame::GetRemainingLife( void )
{
return m_flLifetime - gpGlobals->curtime;
}
int CEntityFlame::GetNumHitboxFires( void )
{
return m_iNumHitboxFires;
}
float CEntityFlame::GetHitboxFireScale( void )
{
return m_flHitboxFireScale;
}
//-----------------------------------------------------------------------------
// Purpose: Burn targets around us
//-----------------------------------------------------------------------------
void CEntityFlame::FlameThink( void )
{
// Assure that this function will be ticked again even if we early-out in the if below.
SetNextThink( gpGlobals->curtime + FLAME_DAMAGE_INTERVAL );
if ( m_hEntAttached )
{
if ( m_hEntAttached->GetFlags() & FL_TRANSRAGDOLL )
{
SetRenderColorA( 0 );
return;
}
CAI_BaseNPC *pNPC = m_hEntAttached->MyNPCPointer();
if ( pNPC && !pNPC->IsAlive() )
{
UTIL_Remove( this );
// Notify the NPC that it's no longer burning!
pNPC->Extinguish();
return;
}
if( m_hEntAttached->GetWaterLevel() > 0 )
{
Vector mins, maxs;
mins = m_hEntAttached->WorldSpaceCenter();
maxs = mins;
maxs.z = m_hEntAttached->WorldSpaceCenter().z;
maxs.x += 32;
maxs.y += 32;
mins.z -= 32;
mins.x -= 32;
mins.y -= 32;
UTIL_Bubbles( mins, maxs, 12 );
}
}
else
{
UTIL_Remove( this );
return;
}
// See if we're done burning, or our attached ent has vanished
if ( m_flLifetime < gpGlobals->curtime || m_hEntAttached == NULL )
{
EmitSound( "General.StopBurning" );
m_bPlayingSound = false;
SetThink( &CEntityFlame::SUB_Remove );
SetNextThink( gpGlobals->curtime + 0.5f );
// Notify anything we're attached to
if ( m_hEntAttached )
{
CBaseCombatCharacter *pAttachedCC = m_hEntAttached->MyCombatCharacterPointer();
if( pAttachedCC )
{
// Notify the NPC that it's no longer burning!
pAttachedCC->Extinguish();
}
}
return;
}
if ( m_hEntAttached )
{
// Do radius damage ignoring the entity I'm attached to. This will harm things around me.
RadiusDamage( CTakeDamageInfo( this, this, 4.0f, DMG_BURN ), GetAbsOrigin(), m_flSize/2, CLASS_NONE, m_hEntAttached );
// Directly harm the entity I'm attached to. This is so we can precisely control how much damage the entity
// that is on fire takes without worrying about the flame's position relative to the bodytarget (which is the
// distance that the radius damage code uses to determine how much damage to inflict)
m_hEntAttached->TakeDamage( CTakeDamageInfo( this, this, FLAME_DIRECT_DAMAGE, DMG_BURN | DMG_DIRECT ) );
if( !m_hEntAttached->IsNPC() && hl2_episodic.GetBool() )
{
const float ENTITYFLAME_MOVE_AWAY_DIST = 24.0f;
// Make a sound near my origin, and up a little higher (in case I'm on the ground, so NPC's still hear it)
CSoundEnt::InsertSound( SOUND_MOVE_AWAY, GetAbsOrigin(), ENTITYFLAME_MOVE_AWAY_DIST, 0.1f, this, SOUNDENT_CHANNEL_REPEATED_DANGER );
CSoundEnt::InsertSound( SOUND_MOVE_AWAY, GetAbsOrigin() + Vector( 0, 0, 48.0f ), ENTITYFLAME_MOVE_AWAY_DIST, 0.1f, this, SOUNDENT_CHANNEL_REPEATING );
}
}
else
{
RadiusDamage( CTakeDamageInfo( this, this, FLAME_RADIUS_DAMAGE, DMG_BURN ), GetAbsOrigin(), m_flSize/2, CLASS_NONE, NULL );
}
FireSystem_AddHeatInRadius( GetAbsOrigin(), m_flSize/2, 2.0f );
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : pEnt -
//-----------------------------------------------------------------------------
void CreateEntityFlame(CBaseEntity *pEnt)
{
CEntityFlame::Create( pEnt );
}