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random.h

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/**********************************************************************
* FILE: random.h
* AUTHOR: Christopher L
* DATE:   15 March 1993
* PURPOSE:
*   Declares a class/object for generating random numbers.
***********************************************************************/
 
#ifndef _RANDOM_H
#define _RANDOM_H
 
#include <stdlib.h>
#include <time.h>
 
/**********************************************************************
* CLASS:  Randomizer
*
* PURPOSE:
*   The Randomizer class simply provides a nice interface for the
*   rand and srand functions.  Also, since the only instance of the
*   class is global, the random number generator automatically gets
*   seeded at the beginning of the program.
*
* FUNCTIONS:
*   Value   Returns a random value between 0 and the integer
*       limit-1, inclusive.
*   operator* A different interface for Value:
*       int x = Random * 12;
***********************************************************************/
 
class Randomizer
{
  private:
    time_t seed;
  public:
    Randomizer (void);
    Value (int limit)  { return (rand () % limit); }
    friend int operator* (Randomizer R, int limit)
      { return R.Value (limit); }
};
 
 
extern Randomizer Random;   // Global instance
 
 
#endif

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