/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
#include "hsResMgr.h"
#include "hsTemplates.h"
#include "plSharedMesh.h"
#include "plGeometrySpan.h"
#include "plInstanceDrawInterface.h"
#include "plDrawableSpans.h"
#include "plMorphSequence.h"

plSharedMesh::plSharedMesh() : fMorphSet(nil), fFlags(0)
{
}

plSharedMesh::~plSharedMesh()
{
    hsAssert(fActiveInstances.GetCount() == 0, "Tried to delete a shared mesh that has active instances.");
    
    while (fSpans.GetCount() > 0)
        delete fSpans.Pop();
}
/*
void plSharedMesh::CreateInstance(plSceneObject *so, UInt8 boneIndex)
{   
plDrawInterface *di = so->GetVolatileDrawInterface();

  //    hsAssert((fActiveInstances.GetCount == 0) || 
  //             (di->GetDrawable() == fActiveInstances[0]->GetDrawInterface()->GetDrawable()),
  //             "Trying to share a mesh between two seperate drawables. No can do.");
  
    
      fActiveInstances.Append(so);
      }
      
        void plSharedMesh::RemoveInstance(plSceneObject *so)
        {
        so->GetVolatileDrawInterface()->ReleaseData();
        
          fActiveInstances.RemoveItem(so);
          }
*/

hsBool plSharedMesh::MsgReceive(plMessage* msg)
{
    plGenRefMsg *refMsg = plGenRefMsg::ConvertNoRef(msg);
    if (refMsg)
    {
        plMorphDataSet *set = plMorphDataSet::ConvertNoRef(refMsg->GetRef());
        if (set)
        {
            if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
            {
                fMorphSet = plMorphDataSet::ConvertNoRef(refMsg->GetRef());
            }
            else if( refMsg->GetContext() & (plRefMsg::kOnDestroy|plRefMsg::kOnRemove) )
            {
                fMorphSet = nil;
            }
            return true;
        }
    }
    
    return hsKeyedObject::MsgReceive(msg);
}

// Currently, active instances are not meant to be created at export and written to disk.
void plSharedMesh::Read(hsStream* s, hsResMgr* mgr)
{
    hsKeyedObject::Read(s, mgr);
    
    int i;
    fSpans.SetCount(s->ReadSwap32());
    for (i = 0; i < fSpans.GetCount(); i++)
    {
        fSpans[i] = TRACKED_NEW plGeometrySpan;
        fSpans[i]->Read(s);
    }

    mgr->ReadKeyNotifyMe(s, TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnCreate, -1, -1), plRefFlags::kActiveRef);
    fFlags = s->ReadByte();
}

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

    int i;
    s->WriteSwap32(fSpans.GetCount());
    for (i = 0; i < fSpans.GetCount(); i++)
        fSpans[i]->Write(s);

    mgr->WriteKey(s, (fMorphSet ? fMorphSet->GetKey() : nil));
    s->WriteByte(fFlags);
}

//////////////////////////////////////////////////////////////////////////////////////

plSharedMeshBCMsg::plSharedMeshBCMsg() : plMessage(), fMesh(nil), fIsAdding(true) { SetBCastFlag(plMessage::kBCastByExactType); }