void CClientStreamer::Restream ( bool bMovedFar )
{
// Limit distance stream in/out rate
// Vehicles might have to ignore this to reduce blocking loads elsewhere.
int iMaxOut = 6;
int iMaxIn = 6;
if ( bMovedFar )
{
iMaxOut = 1000;
iMaxIn = 1000;
}
// Do we have any elements waiting to be streamed out?
while ( !m_ToStreamOut.empty () )
{
CClientStreamElement* pElement = m_ToStreamOut.front ();
// Make sure we have no stream-references
if ( pElement->GetTotalStreamReferences () == 0 )
{
// Stream out 1 of them per frame
pElement->InternalStreamOut ();
iMaxOut--;
}
m_ToStreamOut.remove ( pElement );
if ( iMaxOut <= 0 )
break;
}
static std::vector < CClientStreamElement* > ClosestStreamedOutList;
static std::vector < CClientStreamElement* > FurthestStreamedInList;
ClosestStreamedOutList.clear();
FurthestStreamedInList.clear();
bool bReachedLimit = ReachedLimit ();
// Loop through our active elements list (they should be ordered closest to furthest)
list < CClientStreamElement* > ::iterator iter = m_ActiveElements.begin ();
for ( ; iter != m_ActiveElements.end (); iter++ )
{
CClientStreamElement* pElement = *iter;
float fElementDistanceExp = pElement->GetExpDistance ();
// Is this element streamed in?
if ( pElement->IsStreamedIn () )
{
if ( IS_VEHICLE ( pElement ) )
{
CClientVehicle* pVehicle = DynamicCast < CClientVehicle > ( pElement );
if ( pVehicle )
{
if ( pVehicle->GetOccupant ( ) && IS_PLAYER ( pVehicle->GetOccupant ( ) ) )
{
CClientPlayer* pPlayer = DynamicCast < CClientPlayer > ( pVehicle->GetOccupant ( ) );
if ( pPlayer->GetLastPuresyncType ( ) == PURESYNC_TYPE_LIGHTSYNC )
{
// if the last packet was ls he shouldn't be streamed in
m_ToStreamOut.push_back ( pElement );
}
}
// Is this a trailer?
if ( pVehicle->GetTowedByVehicle ( ) != NULL )
{
// Don't stream it out (this is handled by the towing vehicle)
continue;
}
}
}
if ( IS_PLAYER ( pElement ) )
{
CClientPlayer* pPlayer = DynamicCast < CClientPlayer > ( pElement );
if ( pPlayer->GetLastPuresyncType ( ) == PURESYNC_TYPE_LIGHTSYNC )
{
// if the last packet was ls he isn't/shouldn't be streamed in
m_ToStreamOut.push_back ( pElement );
}
}
// Too far away? Use the threshold so we won't flicker load it if it's on the border moving.
if ( fElementDistanceExp > m_fMaxDistanceThreshold )
{
// Unstream it now?
if ( iMaxOut > 0 )
{
// Make sure we have no stream-references
if ( pElement->GetTotalStreamReferences () == 0 )
{
// Stream out now
pElement->InternalStreamOut ();
iMaxOut--;
}
m_ToStreamOut.remove ( pElement );
}
else
{
// or later
m_ToStreamOut.push_back ( pElement );
}
}
else
{
FurthestStreamedInList.push_back( pElement );
}
}
else
{
// Same dimension as us?
if ( pElement->GetDimension () == m_usDimension )
{
// Too far away? Stop here.
if ( fElementDistanceExp > m_fMaxDistanceExp )
continue;
if ( IS_VEHICLE ( pElement ) )
{
CClientVehicle* pVehicle = DynamicCast < CClientVehicle > ( pElement );
if ( pVehicle && pVehicle->GetOccupant ( ) && IS_PLAYER ( pVehicle->GetOccupant ( ) ))
{
CClientPlayer* pPlayer = DynamicCast < CClientPlayer > ( pVehicle->GetOccupant ( ) );
if ( pPlayer->GetLastPuresyncType ( ) == PURESYNC_TYPE_LIGHTSYNC )
{
// if the last packet was ls he isn't streaming in soon.
continue;
}
}
if ( pVehicle && pVehicle->GetTowedByVehicle ( ) )
{
// Streaming in of towed vehicles is done in CClientVehicle::StreamIn by the towing vehicle
continue;
}
}
if ( IS_PLAYER ( pElement ) )
{
CClientPlayer* pPlayer = DynamicCast < CClientPlayer > ( pElement );
if ( pPlayer->GetLastPuresyncType ( ) == PURESYNC_TYPE_LIGHTSYNC )
{
// if the last packet was ls he isn't streaming in soon.
continue;
}
}
// If attached and attached-to is streamed out, don't consider for streaming in
CClientStreamElement* pAttachedTo = DynamicCast< CClientStreamElement >( pElement->GetAttachedTo() );
if ( pAttachedTo && !pAttachedTo->IsStreamedIn() )
{
// ...unless attached to low LOD version
CClientObject* pAttachedToObject = DynamicCast < CClientObject > ( pAttachedTo );
CClientObject* pObject = DynamicCast < CClientObject > ( pElement );
if ( !pObject || !pAttachedToObject || pObject->IsLowLod () == pAttachedToObject->IsLowLod () )
continue;
}
// Not room to stream in more elements?
if ( bReachedLimit )
{
// Add to the list that might be streamed in during the final phase
if ( (int)ClosestStreamedOutList.size() < iMaxIn ) // (only add if there is a chance it will be used)
ClosestStreamedOutList.push_back( pElement );
}
else
{
// Stream in the new element. Don't do it instantly unless moved from far away.
pElement->InternalStreamIn ( bMovedFar );
bReachedLimit = ReachedLimit ();
if ( !bReachedLimit )
{
iMaxIn--;
if ( iMaxIn <= 0 )
break;
}
}
}
}
}
// Complex code of doom:
// ClosestStreamedOutList is {nearest to furthest} list of streamed out elements within streaming distance
// FurthestStreamedInList is {nearest to furthest} list of streamed in elements
if ( bReachedLimit )
{
// Check 'furthest streamed in' against 'closest streamed out' to see if the state can be swapped
int iFurthestStreamedInIndex = FurthestStreamedInList.size() - 1;
uint uiClosestStreamedOutIndex = 0;
for( uint i = 0 ; i < 10 ; i++ )
{
// Check limits for this frame
if ( iMaxIn <= 0 || iMaxOut <= 0 )
break;
// Check indicies are valid
if ( iFurthestStreamedInIndex < 0 )
break;
if ( uiClosestStreamedOutIndex >= ClosestStreamedOutList.size() )
break;
// See if ClosestStreamedOut is nearer than FurthestStreamedIn
CClientStreamElement* pFurthestStreamedIn = FurthestStreamedInList[ iFurthestStreamedInIndex ];
CClientStreamElement* pClosestStreamedOut = ClosestStreamedOutList[ uiClosestStreamedOutIndex ];
if ( pClosestStreamedOut->GetExpDistance () >= pFurthestStreamedIn->GetExpDistance () )
break;
// Stream out FurthestStreamedIn candidate if possible
if ( pFurthestStreamedIn->GetTotalStreamReferences () == 0 )
{
// Stream out now
pFurthestStreamedIn->InternalStreamOut ();
iMaxOut--;
}
m_ToStreamOut.remove ( pFurthestStreamedIn );
iFurthestStreamedInIndex--; // Always advance to the next candidate
// Stream in ClosestStreamedOut candidate if possible
if ( !ReachedLimit () )
{
// Stream in the new element. No need to do it instantly unless moved from far away.
pClosestStreamedOut->InternalStreamIn ( bMovedFar );
iMaxIn--;
uiClosestStreamedOutIndex++;
}
}
}
}
