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];
}
}
}
break;
}
if ( bUseExtraPoints )
{
mins = mins.Min( vecAbsExtra1 );
mins = mins.Min( vecAbsExtra2 );
maxs = maxs.Max( vecAbsExtra1 );
maxs = maxs.Max( vecAbsExtra2 );
}
// Make sure the bounds are measured in *relative coords*
Vector vecAbsOrigin = GetAbsOrigin();
mins -= vecAbsOrigin;
maxs -= vecAbsOrigin;
}