stateEncoder.h

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/*********************************************************************
** Copyright (c) 1992-2025 MAK Technologies, Inc
** All rights reserved.
*********************************************************************/


#ifndef stateEncoder_H_
#define stateEncoder_H_

#if DtDIS

#include <vlutil/vlMachineTypes.h>
#include <vl/pduEncoder.h>

#define DtStateChange_FORCE      0x0001
#define DtStateChange_OTHER      0x0002
#define DtStateChange_ATTRIBUTES 0x0004

class DtEntityIdentifier;
class DtPdu;
class DtStateRepository;

#define DtCLONE_ENCODER(encoderClass) \
   virtual DtPduEncoder* clone() const \
{ \
   return new encoderClass(*this); \
}

class DT_DLL_VL DtStateEncoder : public DtPduEncoder
{
public:
   DtStateEncoder();

   virtual ~DtStateEncoder();

   DtStateEncoder(const DtStateEncoder& orig);

   DtStateEncoder& operator=(const DtStateEncoder& orig);

   virtual void setSendNeeded();

   virtual DtU32 changedState() const { return myChangedState; }
   virtual void clearChangedState() { myChangedState = 0;    }
   virtual bool isChangedStateBit(DtU32 st) const { return myChangedState & st; }
   virtual void resetChangedStateBit(DtU32 st) { myChangedState &= ~st; }
   virtual void setChangedStateBit(DtU32 st) { myChangedState |= st; }

   virtual DtPduEncoder* clone() const = 0;

   virtual void encode(DtPdu * pdu);

   virtual void fillOutAttributeRecords(
      const DtStateRepository& stateRep,
      DtPduWithAttributeRecordSets* pdu,
      const DtEntityIdentifier& id, bool clearBeforeAdding = true );

   virtual bool sendNeededAttributeRecords( 
      const DtStateRepository& stateRep,
      const DtStateRepository& asSeenByRemote);

protected:
   bool myForceSendNeeded;
   DtU32 myChangedState;
};

#endif
#endif