I am working on an assignment for a game of dice with two player. There are two

Question

I am working on an assignment for a game of dice with two player. There are two classes of dice: Die and LoadedDie. LoadedDie must inherit from Die. The LoadedDie should return a higher average number. My problem appears to be that the LoadedDie class function rollDie does not get called and the score for player 2 is erroneous no matter where it is regular Die or a LoadedDie. Here is the code.

#ifndef DICE_HPP
#define DICE_HPP

class Die
{
public:
int N; // N represents the number of sides on the die
  

public:
Die();
Die(int N );
virtual int rollDie() const;

};

#endif
  

#include "Dice.hpp"
#include <iostream>
#include <cstdlib>

using std::cout;
using std::endl;

Die::Die()
{
N = 6;
}

Die::Die(int numSides)
{
cout << "Dice is running." << endl;
N = numSides;
}

int Die::rollDie() const
{
cout << "the Die random number is " << rand() % N + 1 << endl;
return rand() % N + 1; //randon number
}

#ifndef LOADEDDIE_HPP
#define LOADEDDIE_HPP

#include "Dice.hpp"

class LoadedDie : public Die
{
public:
LoadedDie();
LoadedDie(int);
int rollDie(int)const; //override base class function
~LoadedDie();

};

#endif

#include "LoadedDie.hpp"
#include <iostream>
#include <cstdlib>
#include <ctime>

using std::cout;
using std::endl;

LoadedDie::LoadedDie()
{
N = 6;
srand(time(NULL) ) ;
}

LoadedDie::LoadedDie(int sides ) : Die( N )
{
cout << "LoadedDie is running." << endl;
N = sides;
//this->N = N;
srand(time(NULL));
}

/***********************************************************************************
* LoadedDie::rollDie
* This function simulates a roll of the LoadedDie.
* ********************************************************************************/

int LoadedDie::rollDie(int N ) const
{
if(rand() %2)
{
cout << "Loaded Die if value is " << N << endl;
return N;
}
else
{
cout << "Loaded Due else value is " << (rand() % N ) + 1 << endl;
return (rand() % N) + 1;
}

//return rand() % N + 1 ; // random number
}

Here is the part of the code where I use the classes and their functions.

Die *player1;
player1 = NULL;
Die *player2;
player2 = NULL;

if( player1DieType == 1)
{  
player1 = new Die(player1numSides);
}

else if ( player1DieType == 2)
{
player1 = new LoadedDie(player1numSides);
}

if ( player2DieType == 1)
{
player2 = new Die(player2numSides);
}

else if( player2DieType == 2)
{
player2 = new LoadedDie(player2numSides);
}

for (int i = 0; i < turns; i++ )
{
player1score = player1->rollDie();
player2score = player2->rollDie();
player1Total += player1score;
player2Total += player2score;
cout << "Player 1 rolled a " << player1score << endl;
cout << "Player 2 rolled a " << player2score << endl;
cout << "Player 1 total score " << player1Total << endl;
cout << "Player 2 total score " << player2Total << endl;
}
if (player1Total > player2Total)
{
cout << "Player 1 wins. Final score: Player 1: " << player1Total << " Player 2: " << player2Total << endl;
}
else if (player1Total < player2Total)
{
cout << "Player 2 wins. Final score: Player 2: " << player2Total << " Player 1: " << player1Total << endl;
}
else if (player1Total == player2Total)
{
cout << "It is a tie. Final score: Player 1: " << player1Total << " Player 2: " << player2Total << endl;
}

}

Explanation / Answer

In the LoadedDie header file specified as  Pubic Dice instead of Die.

// header file Die.h

#ifndef DIE_H
#define DIE_H
class Die
{
public:
int N; // N represents the number of sides on the die
  
public:
Die();
Die(int N );
virtual int rollDie() const;
};

#endif /* DICE_H */

Die.cpp

#include "Die.h"
#include <iostream>
#include <cstdlib>
using std::cout;
using std::endl;

Die::Die()
{
N = 6;
}
Die::Die(int numSides)
{
cout << "Dice is running." << endl;
N = numSides;
}
int Die::rollDie() const
{
cout << "the Die random number is " << rand() % N + 1 << endl;
return rand() % N + 1; //random number
}

//LoadedDie.h

#ifndef LOADEDDIE_H
#define LOADEDDIE_H

#include "Die.h"
class LoadedDie : public Die
{
public:
LoadedDie();
LoadedDie(int);
int rollDie(int)const; //override base class function
~LoadedDie();
};

#endif /* LOADEDDIE_H */

//LoadedDie.cpp

#include "LoadedDie.h"
#include <iostream>
#include <cstdlib>
#include <ctime>
using std::cout;
using std::endl;

LoadedDie::LoadedDie()
{
N = 6;
srand(time(NULL) ) ;
}

LoadedDie::LoadedDie(int sides ) : Die( N )
{
cout << "LoadedDie is running." << endl;
N = sides;
//this->N = N;
srand(time(NULL));
}
int LoadedDie::rollDie(int N ) const
{
if(rand() %2)
{
cout << "Loaded Die if value is " << N << endl;
return N;
}
else
{
cout << "Loaded Due else value is " << (rand() % N ) + 1 << endl;
return (rand() % N) + 1;
}
//return rand() % N + 1 ; // random number
}

//driver-main.cpp

#include <cstdlib>
# include "Die.h"
# include "LoadedDie.h"
#include<iostream>
#include<iomanip>

using namespace std;

int main(int argc, char** argv) {
int player1numSides,player2numSides,player1DieType,player2DieType;
int turns;
int player1score =0,player2score=0;
int player1Total = 0,player2Total=0;

Die *player1;
player1 = NULL;
Die *player2;
player2 = NULL;
cout<<" Enter the Number of sides of die for player1 :";
cin>>player1numSides;
cout<<" Enter the Number of sides of die for player2 :";
cin>>player2numSides;
cout<<" Enter the Die Type for player1 :";
cin>>player1DieType;
cout<<" Enter the Die Type for player2 :";
cin>>player2DieType;
cout<<" Enter the number of turns :";
cin>>turns;
if( player1DieType == 1)
{  
player1 = new Die(player1numSides);
}
else if ( player1DieType == 2)
{
player1 = new LoadedDie(player1numSides);
}
if ( player2DieType == 1)
{
player2 = new Die(player2numSides);
}
else if( player2DieType == 2)
{
player2 = new LoadedDie(player2numSides);
}

for (int i = 0; i < turns; i++ )
{
player1score = player1->rollDie();
player2score = player2->rollDie();
player1Total += player1score;
player2Total += player2score;
cout << "Player 1 rolled a " << player1score << endl;
cout << "Player 2 rolled a " << player2score << endl;
cout << "Player 1 total score " << player1Total << endl;
cout << "Player 2 total score " << player2Total << endl;
}
if (player1Total > player2Total)
{
cout << "Player 1 wins. Final score: Player 1: " << player1Total << " Player 2: " << player2Total << endl;
}
else if (player1Total < player2Total)
{
cout << "Player 2 wins. Final score: Player 2: " << player2Total << " Player 1: " << player1Total << endl;
}
else if (player1Total == player2Total)
{
cout << "It is a tie. Final score: Player 1: " << player1Total << " Player 2: " << player2Total << endl;
}

return 0;
}

Sample Run:

Enter the Number of sides of die for player1 :6

Enter the Number of sides of die for player2 :6

Enter the Die Type for player1 :2

Enter the Die Type for player2 :2

Enter the number of turns :4
Dice is running.
LoadedDie is running.
Dice is running.
LoadedDie is running.
the Die random number is 2
the Die random number is 2
Player 1 rolled a 6
Player 2 rolled a 2
Player 1 total score 6
Player 2 total score 2
the Die random number is 2
the Die random number is 6
Player 1 rolled a 1
Player 2 rolled a 2
Player 1 total score 7
Player 2 total score 4
the Die random number is 6
the Die random number is 5
Player 1 rolled a 5
Player 2 rolled a 6
Player 1 total score 12
Player 2 total score 10
the Die random number is 3
the Die random number is 5
Player 1 rolled a 6
Player 2 rolled a 4
Player 1 total score 18
Player 2 total score 14
Player 1 wins. Final score: Player 1: 18 Player 2: 14

RUN SUCCESSFUL (total time: 8s)

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