prj/cam/src/object/propval_.h

   1 /*
   2 @Copyright Looking Glass Studios, Inc.
   3 1996,1997,1998,1999,2000 Unpublished Work.
   4 */
   5
   6 // $Header: r:/t2repos/thief2/src/object/propval_.h,v 1.3 2000/01/29 13:24:47 adurant Exp $
   7 #pragma once
   8
   9 #ifndef PROPVAL__H
  10 #define PROPVAL__H
  11 #include <propimp.h>
  12
  13 ////////////////////////////////////////////////////////////
  14 // DEFAULT VALUE MANIPULATORS
  15 //
  16 // This is the default "value manipulator" for the proprerty system.
  17 // It should work for scalars and pointer-free structures.
  18 //
  19
  20 class cDefaultPropValueFuncs : public cPropValueFuncs
  21 {
  22    int size_;
  23 public:
  24    cDefaultPropValueFuncs(int size) :size_(size) {};
  25    ~cDefaultPropValueFuncs();
  26
  27    //
  28    // cPropValueFuncs members
  29    //
  30    uint Version(void); // returns size
  31    void Init(ObjID obj, void* value);   // no-op
  32    void New(ObjID obj, void* value, void *sug = NULL); // copy sug or zero out
  33    void Term(ObjID obj, void* value);  // no-op
  34    void Copy(ObjID obj, void* targ, void* src);  // memcpy
  35    void Read(ObjID obj, void* value, uint ver, PropReadFunc read, PropFile* file); // read
  36    void Write(ObjID obj, void* value, PropWriteFunc write, PropFile* file); // write
  37 };
  38
  39 ////////////////////////////////////////////////////////////
  40 // TEMPLATE VALUE FUNCS
  41 //
  42 // For when your property happens to be a class
  43 //
  44 // You probably want to overload read and write.
  45 //
  46
  47 template <class VALUE> class cPropClassValueFuncs : public cPropValueFuncs
  48 {
  49 public:
  50    void Init(ObjID , void* ) { };
  51    void New(ObjID obj, void* value, void* sug)
  52    {
  53       if (sug == NULL)
  54          *(VALUE*)value = VALUE(); // use default constructor
  55       else
  56          Copy(obj,value,sug);
  57    }
  58    void Term(ObjID , void* value) { ((VALUE*)value)->~VALUE(); } // call destructor
  59    void Copy(ObjID , void* t, void* s) { *(VALUE*)t = *(VALUE*)s;};
  60    void Read(ObjID , void* value, uint , PropReadFunc read, PropFile* file)
  61    { read(file,value,sizeof(VALUE));};
  62    void Write(ObjID , void* value, PropWriteFunc write, PropFile* file)
  63    { write(file,value,sizeof(VALUE));};
  64 };
  65
  66
  67 #endif // PROPVAL__H