Clipboard

void CEnvExplosion::InputExplode( inputdata_t &inputdata )
{
	trace_t tr;

	SetModelName( NULL_STRING );//invisible
	SetSolid( SOLID_NONE );// intangible

	Vector vecSpot = GetAbsOrigin() + Vector( 0 , 0 , 8 );
	UTIL_TraceLine( vecSpot, vecSpot + Vector( 0, 0, -40 ), (MASK_SOLID_BRUSHONLY | MASK_WATER), this, COLLISION_GROUP_NONE, &tr );

	// Pull out of the wall a bit. We used to move the explosion origin itself, but that seems unnecessary, not to mention a
	// little weird when you consider that it might be in hierarchy. Instead we just calculate a new virtual position at
	// which to place the explosion. We don't use that new position to calculate radius damage because according to Steve's
	// comment, that adversely affects the force vector imparted on explosion victims when they ragdoll.
	Vector vecExplodeOrigin = GetAbsOrigin();
	if ( tr.fraction != 1.0 )
	{
		vecExplodeOrigin = tr.endpos + (tr.plane.normal * 24 );
	}

	// draw decal
	if (! ( m_spawnflags & SF_ENVEXPLOSION_NODECAL ))
	{
		if ( ! ( m_spawnflags & SF_ENVEXPLOSION_ICE ))
			UTIL_DecalTrace( &tr, "Scorch" );
		else
			UTIL_DecalTrace( &tr, "Ice_Explosion_Decal" );
	}


	// It's stupid that this entity's spawnflags and the flags for the
	// explosion temp ent don't match up. But because they don't, we
	// have to reinterpret some of the spawnflags to determine which
	// flags to pass to the temp ent.
	int nFlags = TE_EXPLFLAG_NONE;

	if( m_spawnflags & SF_ENVEXPLOSION_NOFIREBALL )
	{
		nFlags |= TE_EXPLFLAG_NOFIREBALL;
	}

	if( m_spawnflags & SF_ENVEXPLOSION_NOSOUND )
	{
		nFlags |= TE_EXPLFLAG_NOSOUND;
	}

	if ( m_spawnflags & SF_ENVEXPLOSION_RND_ORIENT )
	{
		nFlags |= TE_EXPLFLAG_ROTATE;
	}

	if ( m_nRenderMode == kRenderTransAlpha )
	{
		nFlags |= TE_EXPLFLAG_DRAWALPHA;
	}
	else if ( m_nRenderMode != kRenderTransAdd )
	{
		nFlags |= TE_EXPLFLAG_NOADDITIVE;
	}

	if( m_spawnflags & SF_ENVEXPLOSION_NOPARTICLES )
	{
		nFlags |= TE_EXPLFLAG_NOPARTICLES;
	}

	if( !(m_spawnflags & SF_ENVEXPLOSION_NODLIGHTS) )
	{
		nFlags |= TE_EXPLFLAG_DLIGHT;
	}

	if ( m_spawnflags & SF_ENVEXPLOSION_NOFIREBALLSMOKE )
	{
		nFlags |= TE_EXPLFLAG_NOFIREBALLSMOKE;
	}

	if ( m_spawnflags & SF_ENVEXPLOSION_ICE )
	{
		nFlags |= TE_EXPLFLAG_ICE;
	}

	//Get the damage override if specified
	int	iRadius = ( m_iRadiusOverride > 0 ) ? m_iRadiusOverride : ( m_iMagnitude * 2.5f );

	CPASFilter filter( vecExplodeOrigin );
	te->Explosion( filter, 0.0,
		&vecExplodeOrigin,
		( m_sFireballSprite < 1 ) ? g_sModelIndexFireball : m_sFireballSprite,
		!( m_spawnflags & SF_ENVEXPLOSION_NOFIREBALL ) ? ( m_spriteScale / 10.0 ) : 0.0,
		15,
		nFlags,
		iRadius,
		m_iMagnitude );

	// do damage
	if ( !( m_spawnflags & SF_ENVEXPLOSION_NODAMAGE ) )
	{
		CBaseEntity *pAttacker = GetOwnerEntity() ? GetOwnerEntity() : this;

		// Only calculate damage type if we didn't get a custom one passed in
		int iDamageType = m_iCustomDamageType;
		if ( iDamageType == -1 )
		{
			iDamageType = HasSpawnFlags( SF_ENVEXPLOSION_GENERIC_DAMAGE ) ? DMG_GENERIC : DMG_BLAST;
		}

		CTakeDamageInfo info( m_hInflictor ? m_hInflictor : this, pAttacker, m_iMagnitude, iDamageType );

		if( HasSpawnFlags( SF_ENVEXPLOSION_SURFACEONLY ) )
		{
			info.AddDamageType( DMG_BLAST_SURFACE );
		}

		if ( m_flDamageForce )
		{
			// Not the right direction, but it'll be fixed up by RadiusDamage.
			info.SetDamagePosition( GetAbsOrigin() );
			info.SetDamageForce( Vector( m_flDamageForce, 0, 0 ) );
		}

		RadiusDamage( info, GetAbsOrigin(), iRadius, m_iClassIgnore, m_hEntityIgnore.Get() );
	}

	SetThink( &CEnvExplosion::Smoke );
	SetNextThink( gpGlobals->curtime + 0.3 );

	// Only do these effects if we're not submerged
	if ( UTIL_PointContents( GetAbsOrigin(), MASK_WATER ) & CONTENTS_WATER )
	{
		// draw sparks
		if ( !( m_spawnflags & SF_ENVEXPLOSION_NOSPARKS ) )
		{
			int sparkCount = random->RandomInt(0,3);

			for ( int i = 0; i < sparkCount; i++ )
			{
				QAngle angles;
				VectorAngles( tr.plane.normal, angles );
				Create( "spark_shower", vecExplodeOrigin, angles, NULL );
			}
		}
	}
}