C++ CBaseEntity::GetBeamTraceFilter方法代码示例

void CBeam::RelinkBeam( void )
{
	// FIXME: Why doesn't this just define the absbox too?
	// It seems that we don't need to recompute the absbox
	// in CBaseEntity::SetObjectCollisionBox, in fact the absbox
	// computed there seems way too big
	Vector startPos = GetAbsStartPos(), endPos = GetAbsEndPos();

	Vector vecAbsExtra1, vecAbsExtra2;
	bool bUseExtraPoints = false;

#ifdef PORTAL
	CBaseEntity *pStartEntity = GetStartEntityPtr();
	
	CTraceFilterSkipClassname traceFilter( pStartEntity, "prop_energy_ball", COLLISION_GROUP_NONE );
	
	ITraceFilter *pEntityBeamTraceFilter = NULL;
	if ( pStartEntity )
		pEntityBeamTraceFilter = pStartEntity->GetBeamTraceFilter();

	CTraceFilterChain traceFilterChain( &traceFilter, pEntityBeamTraceFilter );

	bUseExtraPoints = UTIL_Portal_Trace_Beam( this, startPos, endPos, vecAbsExtra1, vecAbsExtra2, &traceFilterChain );
#endif

	// UNDONE: Should we do this to make the boxes smaller?
	//SetAbsOrigin( startPos );

	Vector vecBeamMin, vecBeamMax;
	VectorMin( startPos, endPos, vecBeamMin );
	VectorMax( startPos, endPos, vecBeamMax );

	if ( bUseExtraPoints )
	{
		VectorMin( vecBeamMin, vecAbsExtra1, vecBeamMin );
		VectorMin( vecBeamMin, vecAbsExtra2, vecBeamMin );
		VectorMax( vecBeamMax, vecAbsExtra1, vecBeamMax );
		VectorMax( vecBeamMax, vecAbsExtra2, vecBeamMax );
	}

	SetCollisionBounds( vecBeamMin - GetAbsOrigin(), vecBeamMax - GetAbsOrigin() );
}

//-----------------------------------------------------------------------------
// Computes the bounding box of a beam local to the origin of the beam
//-----------------------------------------------------------------------------
void CBeam::ComputeBounds( Vector& mins, Vector& maxs )
{
	Vector vecAbsStart = GetAbsStartPos();
	Vector vecAbsEnd = GetAbsEndPos();

	// May need extra points for creating the min/max bounds
	bool bUseExtraPoints = false;
	Vector vecAbsExtra1, vecAbsExtra2;

#ifdef PORTAL
	CBaseEntity *pStartEntity = GetStartEntityPtr();

	CTraceFilterSkipClassname traceFilter( pStartEntity, "prop_energy_ball", COLLISION_GROUP_NONE );

	ITraceFilter *pEntityBeamTraceFilter = NULL;
	if ( pStartEntity )
		pEntityBeamTraceFilter = pStartEntity->GetBeamTraceFilter();

	CTraceFilterChain traceFilterChain( &traceFilter, pEntityBeamTraceFilter );

	bUseExtraPoints = UTIL_Portal_Trace_Beam( this, vecAbsStart, vecAbsEnd, vecAbsExtra1, vecAbsExtra2, &traceFilterChain );
#endif

	switch( GetType() )
	{
	case BEAM_LASER:
	case BEAM_ENTS:
	case BEAM_SPLINE:
	case BEAM_ENTPOINT:
		{
			// Compute the bounds here...
			Vector attachmentPoint( 0, 0, 0 );
			mins.Init( 99999, 99999, 99999 );
			maxs.Init( -99999, -99999, -99999 );
			for (int i = 0; i < m_nNumBeamEnts; ++i )
			{
				C_BaseEntity *pTestEnt = m_hAttachEntity[i].Get();
				if ( pTestEnt )
				{
					if ( pTestEnt == this )
					{
						mins = maxs = GetAbsOrigin();
					}
					else
					{
						// We do this so we don't have to calculate attachments (and do expensive bone-setup calculations) on our attachments.
						Vector attMins, attMaxs;
						m_hAttachEntity[i]->GetRenderBoundsWorldspace( attMins, attMaxs );

						mins = mins.Min( attMins );
						mins = mins.Min( attMaxs );
						
						maxs = maxs.Max( attMins );
						maxs = maxs.Max( attMaxs );
					}
					
					//ASSERT_COORD( mins );
					//ASSERT_COORD( maxs );
				}
				else
				{
					if (i == 0)
					{
						VectorCopy( vecAbsStart, attachmentPoint );
					}
					else if (i == 1)
					{
						VectorCopy( vecAbsEnd, attachmentPoint );
					}
					else
					{
						Assert(0);
					}

					mins = mins.Min( attachmentPoint );
					maxs = maxs.Max( attachmentPoint );
				}
			}
		}
		break;

	case BEAM_POINTS:
	default:
		{
			for (int i = 0; i < 3; ++i)
			{
				if (vecAbsStart[i] < vecAbsEnd[i])
				{
					mins[i] = vecAbsStart[i];
					maxs[i] = vecAbsEnd[i];
				}
				else
				{
					mins[i] = vecAbsEnd[i];
					maxs[i] = vecAbsStart[i];
				}
			}
//.........这里部分代码省略.........