CWE-ou-minkata/Sources/Plasma/PubUtilLib/plScene/plSceneNode.cpp

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*==LICENSE==*/


#include "HeadSpin.h"
#include <algorithm>

#include "plSceneNode.h"
#include "pnDispatch/plDispatch.h"
#include "plMessage/plNodeCleanupMsg.h"
#include "pnMessage/plNodeRefMsg.h"

#include "hsStream.h"
#include "hsResMgr.h"

#include "pnSceneObject/plSceneObject.h"
#include "plDrawable.h"
#include "plPhysical.h"
#include "plAudible.h"
#include "plGLight/plLightInfo.h"
#include "pnMessage/plRefMsg.h"
#include "plPipeline.h"
#include "pnKeyedObject/plKey.h"
#include "plDrawable/plSpaceTreeMaker.h"
#include "plDrawable/plSpaceTree.h"
#include "plPageTreeMgr.h"
#include "plOccluder.h"

//MFHORSE
//BLACK
// temp hack for debugging
#include "plDrawable/plDrawableSpans.h"
#include "pnKeyedObject/plKeyImp.h"

plSceneNode::plSceneNode()
:   fDepth(0),
    fSpaceTree(nil),
    fFilterGenerics(false)
{
}

plSceneNode::~plSceneNode()
{
    plgDispatch::Dispatch()->UnRegisterForExactType(plNodeCleanupMsg::Index(), GetKey());

    delete fSpaceTree;
}

//// Init ////////////////////////////////////////////////////////////////////
//  Because we can't register for messages on construction. Doh.

void plSceneNode::Init()
{
    ///  :P
    plgDispatch::Dispatch()->RegisterForExactType(plNodeCleanupMsg::Index(), GetKey());
}

void plSceneNode::Read(hsStream* s, hsResMgr* mgr)
{
    hsKeyedObject::Read(s, mgr);

    uint32_t n;
    int i;

    n = s->ReadLE32();
    fSceneObjects.clear();
    for( i = 0; i < n; i++ )
    {
        plNodeRefMsg* refMsg = new plNodeRefMsg(GetKey(), plRefMsg::kOnCreate, i, plNodeRefMsg::kObject);
        plKey key = mgr->ReadKeyNotifyMe(s, refMsg, plRefFlags::kActiveRef);
    }

    n = s->ReadLE32();
    fGenericPool.clear();
    for( i = 0; i < n; i++ )
    {
        plNodeRefMsg* refMsg = new plNodeRefMsg(GetKey(), plRefMsg::kOnCreate, -1, plNodeRefMsg::kGeneric);
        mgr->ReadKeyNotifyMe(s, refMsg, plRefFlags::kActiveRef);
    }
}

void plSceneNode::Write(hsStream* s, hsResMgr* mgr)
{
    hsKeyedObject::Write(s, mgr);

    int i;

    s->WriteLE32(fSceneObjects.size());
    for( i = 0; i < fSceneObjects.size(); i++ )
        mgr->WriteKey(s,fSceneObjects[i]);

    s->WriteLE32(fGenericPool.size());
    for( i = 0; i < fGenericPool.size(); i++ )
        mgr->WriteKey(s, fGenericPool[i]);
}

void plSceneNode::Harvest(plVolumeIsect* isect, hsTArray<plDrawVisList>& levList)
{
    static hsTArray<int16_t> visList;
    visList.SetCount(0);
    GetSpaceTree()->HarvestLeaves(isect, visList);
    static hsTArray<int16_t> visSpans;
    visSpans.SetCount(0);

    int i;
    for( i = 0; i < visList.GetCount(); i++ )
    {
        int idx = visList[i];
        fDrawPool[idx]->GetSpaceTree()->HarvestLeaves(isect, visSpans);
        if( visSpans.GetCount() )
        {
            plDrawVisList* drawVis = levList.Push();
            drawVis->fDrawable = fDrawPool[idx];
            drawVis->fVisList.Swap(visSpans);
        }
    }
}

void plSceneNode::CollectForRender(plPipeline* pipe, hsTArray<plDrawVisList>& levList, plVisMgr* visMgr)
{
    static hsTArray<int16_t> visList;
    visList.SetCount(0);
    pipe->HarvestVisible(GetSpaceTree(), visList);
    static hsTArray<int16_t> visSpans;
    visSpans.SetCount(0);

    int i;
    for( i = 0; i < visList.GetCount(); i++ )
    {
        int idx = visList[i];
        if( pipe->PreRender(fDrawPool[idx], visSpans, visMgr) )
        {
            plDrawVisList* drawVis = levList.Push();
            drawVis->fDrawable = fDrawPool[idx];
            drawVis->fVisList.Swap(visSpans);
        }
    }
}

void plSceneNode::SubmitOccluders(plPageTreeMgr* pageMgr) const
{
    pageMgr->AddOccluderList(fOccluders);
}

plSpaceTree* plSceneNode::IBuildSpaceTree()
{
    plSpaceTreeMaker maker;
    maker.Reset();
    
    hsBounds3Ext bnd;
    hsPoint3 zero(0, 0, 0);
    bnd.Reset(&zero);
    
    int i;
    for( i = 0; i < fDrawPool.size(); i++ )
    {
        if( fDrawPool[i] )
            maker.AddLeaf(fDrawPool[i]->GetSpaceTree()->GetWorldBounds());
        else
            maker.AddLeaf(bnd, true);
    }

    fSpaceTree = maker.MakeTree();
    fSpaceTree->MakeDirty();

    return fSpaceTree;
}

plSpaceTree* plSceneNode::ITrashSpaceTree()
{
    delete fSpaceTree;
    return fSpaceTree = nil;
}

void plSceneNode::IDirtySpaceTree()
{
    for (size_t i = 0; i < fDrawPool.size(); ++i)
    {
        plDrawable* drawable = fDrawPool[i];
        if (drawable && drawable->GetSpaceTree()->IsDirty() )
        {
            drawable->GetSpaceTree()->Refresh();
            fSpaceTree->MoveLeaf(i, drawable->GetSpaceTree()->GetWorldBounds());
        }
    }
}

plSpaceTree* plSceneNode::GetSpaceTree()
{
    if (!fSpaceTree)
        IBuildSpaceTree();
    IDirtySpaceTree();
    return fSpaceTree;
}

void plSceneNode::ISetDrawable(plDrawable* d)
{
    if( !d )
        return;

    if (std::find(fDrawPool.begin(), fDrawPool.end(), d) == fDrawPool.end()) {
        fDrawPool.push_back(d);
        ITrashSpaceTree();
    }
}

void plSceneNode::ISetAudible(plAudible* a)
{
    if( !a )
        return;

    if (std::find(fAudioPool.begin(), fAudioPool.end(), a) == fAudioPool.end())
        fAudioPool.push_back(a);
}

void plSceneNode::ISetPhysical(plPhysical* p)
{
    if( !p )
        return;

    if (std::find(fSimulationPool.begin(), fSimulationPool.end(), p) == fSimulationPool.end())
        fSimulationPool.push_back(p);
}

void plSceneNode::ISetObject(plSceneObject* o)
{
    if (!o)
        return;

    if (std::find(fSceneObjects.begin(), fSceneObjects.end(), o) == fSceneObjects.end())
        fSceneObjects.push_back(o);

    // MF_NET_GROUPS_TEST
    // This will have no effect on members of NetGroupConstants
    o->SetNetGroup(o->SelectNetGroup(GetKey()));

    o->SetSceneNode(GetKey());
}

void plSceneNode::ISetLight(plLightInfo* l)
{
    if (std::find(fLightPool.begin(), fLightPool.end(), l) == fLightPool.end())
        fLightPool.push_back(l);
}

void plSceneNode::ISetOccluder(plOccluder* o)
{
    if( fOccluders.kMissingIndex == fOccluders.Find(o) )
    {
        fOccluders.Append(o);
    }
}

void plSceneNode::ISetGeneric(hsKeyedObject* k)
{
    if (std::find(fGenericPool.begin(), fGenericPool.end(), k) == fGenericPool.end())
        fGenericPool.push_back(k);
}

void plSceneNode::IRemoveDrawable(plDrawable* d)
{
    auto it = std::find(fDrawPool.begin(), fDrawPool.end(), d);
    if (it != fDrawPool.end()) {
        fDrawPool.erase(it);
        ITrashSpaceTree();
    }
}

void plSceneNode::IRemoveAudible(plAudible* a)
{
    auto it = std::find(fAudioPool.begin(), fAudioPool.end(), a);
    if (it != fAudioPool.end())
        fAudioPool.erase(it);
}

void plSceneNode::IRemovePhysical(plPhysical* p)
{
    hsAssert(p, "Removing nil physical");

#ifdef HS_DEBUGGING
    if (p)
    {
        plKey oldNodeKey = p->GetSceneNode();
        if (oldNodeKey && oldNodeKey != GetKey())
        {
            char buf[256];
            sprintf(buf, "Trying to remove physical %s from scenenode %s,\nbut it's actually in %s",
                p->GetKeyName().c_str(), GetKeyName().c_str(), oldNodeKey->GetName().c_str());
            hsAssert(0, buf);
        }
    }
#endif

    auto it = std::find(fSimulationPool.begin(), fSimulationPool.end(), p);
    if (it != fSimulationPool.end())
        fSimulationPool.erase(it);
}

void plSceneNode::IRemoveObject(plSceneObject* o)
{
    auto it = std::find(fSceneObjects.begin(), fSceneObjects.end(), o);
    if (it != fSceneObjects.end())
        fSceneObjects.erase(it);
}

void plSceneNode::IRemoveLight(plLightInfo* l)
{
    hsAssert(l, "Removing nil light");

    auto it = std::find(fLightPool.begin(), fLightPool.end(), l);
    if (it != fLightPool.end())
        fLightPool.erase(it);
}

void plSceneNode::IRemoveOccluder(plOccluder* o)
{
    int idx = fOccluders.Find(o);
    if( idx != fOccluders.kMissingIndex )
        fOccluders.Remove(idx);
}

void plSceneNode::IRemoveGeneric(hsKeyedObject* k)
{
    auto it = std::find(fGenericPool.begin(), fGenericPool.end(), k);
    if (it != fGenericPool.end())
        fGenericPool.erase(it);
}

bool plSceneNode::IOnRemove(plNodeRefMsg* refMsg)
{

    switch( refMsg->fType )
    {
    case plNodeRefMsg::kDrawable:
        IRemoveDrawable(plDrawable::ConvertNoRef(refMsg->GetRef()));
        break;
    case plNodeRefMsg::kPhysical:
        IRemovePhysical(plPhysical::ConvertNoRef(refMsg->GetRef()));
        break;
    case plNodeRefMsg::kAudible:
        IRemoveAudible(plAudible::ConvertNoRef(refMsg->GetRef()));
        break;
    case plNodeRefMsg::kObject:
        IRemoveObject(plSceneObject::ConvertNoRef(refMsg->GetRef()));
        break;
    case plNodeRefMsg::kLight:
        IRemoveLight(plLightInfo::ConvertNoRef(refMsg->GetRef()));
        break;
    case plNodeRefMsg::kOccluder:
        IRemoveOccluder(plOccluder::ConvertNoRef(refMsg->GetRef()));
        break;
    case plNodeRefMsg::kGeneric:
        IRemoveGeneric(refMsg->GetRef());
        break;
    }
    if( refMsg->GetRef() && (refMsg->GetContext() & plRefMsg::kOnRemove) )
        GetKey()->Release(refMsg->GetRef()->GetKey());
        
    return true;
}

bool plSceneNode::IOnAdd(plNodeRefMsg* refMsg)
{
    int which = refMsg->fWhich;

    switch( refMsg->fType )
    {
    case plNodeRefMsg::kDrawable:
        ISetDrawable(plDrawable::ConvertNoRef(refMsg->GetRef()));
        return true;
    case plNodeRefMsg::kPhysical:
        ISetPhysical(plPhysical::ConvertNoRef(refMsg->GetRef()));
        return true;
    case plNodeRefMsg::kAudible:
        ISetAudible(plAudible::ConvertNoRef(refMsg->GetRef()));
        return true;
    case plNodeRefMsg::kObject:
        ISetObject(plSceneObject::ConvertNoRef(refMsg->GetRef()));
        return true;
    case plNodeRefMsg::kLight:
        ISetLight(plLightInfo::ConvertNoRef(refMsg->GetRef()));
        return true;
    case plNodeRefMsg::kOccluder:
        ISetOccluder(plOccluder::ConvertNoRef(refMsg->GetRef()));
        return true;
    case plNodeRefMsg::kGeneric:
        ISetGeneric(refMsg->GetRef());
    }
    return true;
}

bool plSceneNode::MsgReceive(plMessage* msg)
{
    plNodeCleanupMsg    *cleanMsg = plNodeCleanupMsg::ConvertNoRef( msg );

    if( cleanMsg )
    {
        ICleanUp();
        return true;
    }

    plNodeRefMsg* refMsg = plNodeRefMsg::ConvertNoRef(msg);
    
    if( refMsg )
    {
        if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
            return IOnAdd(refMsg);
        else if( refMsg->GetContext() & (plRefMsg::kOnDestroy|plRefMsg::kOnRemove) )
            return IOnRemove(refMsg);

    }

    return hsKeyedObject::MsgReceive(msg);
}

//// ICleanUp ////////////////////////////////////////////////////////////////
//  Export only: Clean up the scene node (i.e. make sure drawables optimize)

void    plSceneNode::ICleanUp( void )
{
    /// Go find drawables to delete
    for (auto draw : fDrawPool)
        draw->Optimize();

    if (fFilterGenerics)
    {
        ssize_t i;
        for ( i = fSceneObjects.size() - 1; i >= 0; i--)
            GetKey()->Release(fSceneObjects[i]->GetKey());
        for ( i = fDrawPool.size() - 1; i >= 0; i--)
            GetKey()->Release(fDrawPool[i]->GetKey());
        for ( i = fSimulationPool.size() - 1; i >= 0; i--)
            GetKey()->Release(fSimulationPool[i]->GetKey());
        for ( i = fAudioPool.size() - 1; i >= 0; i--)
            GetKey()->Release(fAudioPool[i]->GetKey());
        for ( i = fOccluders.GetCount() - 1; i >= 0; i--)
            GetKey()->Release(fOccluders[i]->GetKey());
        for ( i = fLightPool.size() - 1; i >= 0; i--)
            GetKey()->Release(fLightPool[i]->GetKey());
    }

    ITrashSpaceTree();
}

//// GetMatchingDrawable /////////////////////////////////////////////////////
//  Export only: Query for a given drawable.

plDrawable  *plSceneNode::GetMatchingDrawable( const plDrawableCriteria& crit )
{
    for (auto draw : fDrawPool) {
        if (draw->DoIMatch(crit))
            return draw;
    }
    return nullptr;
}

//// OptimizeDrawables ///////////////////////////////////////////////////////
//  Loops through all the drawables and calls Optimize on each one. For the
//  export side, to be called right before writing the drawables to disk.

void    plSceneNode::OptimizeDrawables( void )
{
    for (auto draw : fDrawPool)
        draw->Optimize();
}