Physics material enumerator, allows for 3dengine to get material id from game code.

struct IPhysMaterialEnumerator {
};

I3DEngine.h

virtual ~IPhysMaterialEnumerator();

virtual int EnumPhysMaterial(const char * szPhysMatName) = 0;

virtual int GetMaterialCount() = 0;

virtual const char* GetMaterialNameByIndex(int index) = 0;

virtual bool IsCollidable(int nMatId) = 0;