//  Die.h            Dave Reed (based on code by Owen Astrachan)
//                   davereed@creighton.edu
//
//  A class for simulating an N-sided die.
//
//  Die(int sides) -- constructor, with the number of die sides specified
//                    (a default value of 6 is assumed if not specified)
//  int Roll()     -- returns the random "roll" of the die, a uniformly
//                    distributed random number between 1 and # sides
//  int NumSides() -- access function, returns # of sides
//  int NumRolls() -- access function, returns # of times Roll called
//                    for that particular Die


#ifndef _DIE_H
#define _DIE_H

#include <ctime>

class Die
{
  public:
    Die(int sides = 6);
    int Roll();
    int NumSides() const;
    int NumRolls() const;

  private:
    int myRollCount;            // # times die rolled
    int mySides;                // # sides on die

    static bool ourInitialized; // for 'per-class' initialization

};

/////////////////////////////////////////////////////

bool Die::ourInitialized = false;

Die::Die(int sides)
// Results: all private fields are initialized     
{
    if (!ourInitialized)
    {   
        ourInitialized = true;       // only call srand once
        srand(unsigned(time(0)));    // randomize
    }
    myRollCount = 0;
    mySides = sides;
}

int Die::Roll()
// Returns: a random 'die' roll (and roll count is incremented)    
{
    int dieRoll = int(rand()) % mySides + 1;
    myRollCount++;

    return dieRoll;
}

int Die::NumSides() const
// Returns: # of sides on the die     
{
    return mySides;
}

int Die::NumRolls() const
// Returns: # of times the die has been rolled     
{
    return myRollCount;
}

#endif    /* _DIE_H not defined */