template <class T>class ParamObject {
public:    
  void *parent;
  virtual void ToFile ( FILE *dest ) {
    fwrite ( (char*)this - sizeof(T), sizeof(T),1, dest );
  }
};
#define PARAM(TYPE,NAME) union { TYPE NAME; struct { TYPE NAME##alias; ParamObject<TYPE> NAME##object; }; };

class AClass {
public:
  int a,b;
};{ TYPE NAME##alias; ParamObject<TYPE> NAME##object; }; };

void test ( ) {
  struct {
    PARAM(float,time);
    PARAM(float,time2);
    PARAM(AClass,time3);
  }s;
  
  s.time = 23.0f;
  s.timeobject.ToFile ( 0 );
  s.time3.a = 3;
  s.time2 += s.time;
  s.time3object.ToFile ( 0 );
}