{

public:

virtual ~IPhysicsObjectPairHash() {}

virtual void AddObjectPair( void *pObject0, void *pObject1 ) = 0;

virtual void RemoveObjectPair( void *pObject0, void *pObject1 ) = 0;

virtual bool IsObjectPairInHash( void *pObject0, void *pObject1 ) = 0;

virtual void RemoveAllPairsForObject( void *pObject0 ) = 0;

virtual bool IsObjectInHash( void *pObject0 ) = 0;

// Used to iterate over all pairs an object is part of

virtual int GetPairCountForObject( void *pObject0 ) = 0;

virtual int GetPairListForObject( void *pObject0, int nMaxCount, void **ppObjectList ) = 0;