Suppose that you are creating a fantasy role- playing game. In this game, we have four different types of creatures: humans, cyberdemons, balrogs, and elves. To represent one of these creatures, we might define a Creature class as follows: class Creature { private: int type; // 0 human, 1 cyberdemon, 2 balrog, 3 elf int strength; // How much damage we can inflict int hitpoints; // How much damage we can sustain string getSpecies(); // Returns type of species public: Creature(); // Initialize to human, 10 strength, 10 hit points Creature(int newType, int newStrength, int newHit); // Initialize creature to new type, strength, hit points // Also add appropriate accessor and mutator functions // for type, strength, and hit points int getDamage(); // Returns amount of damage this creature // inflicts in one round of combat }; Here is an implementation of the getSpecies() function: string Creature::getSpecies() { switch (type) { case 0: return " Human"; case 1: return " Cyberdemon"; case 2: return " Balrog"; case 3: return " Elf"; } return " Unknown"; } The getDamage() function outputs and returns the damage this creature can inflict in one round of combat. The rules for calculating the damage are as follows: Every creature inflicts damage that is a random number r, where 0 < r <= strength. Demons have a 5% chance of inflicting a demonic attack, which is an additional 50 damage points. Balrogs and Cyberdemons are demons. Elves have a 10% chance to inflict a magical attack that doubles the normal amount of damage. Balrogs are very fast, so they get to attack twice. An implementation of getDamage() is given here: int Creature::getDamage() { int damage; // All creatures inflict damage, which is a // random number up to their strength damage = ( rand() % strength) + 1; cout << getSpecies() << " attacks for " << damage << " points!" << endl; // Demons can inflict damage of 50 with a 5% chance if ((type = 2) || (type == 1)) if ((rand() % 100) < 5) { damage = damage + 50; cout << " Demonic attack inflicts 50 " << " additional damage points!" << endl; } // Elves inflict double magical damage with a 10% chance if (type == 3) { if ((rand() % 10)== 0) { cout << " Magical attack inflicts " << damage << " additional damage points!" << endl; damage = damage * 2; } } // Balrogs are so fast they get to attack twice if (type == 2) { int damage2 = (rand() % strength) + 1; cout << " Balrog speed attack inflicts " << damage2 << " additional damage points!" << endl; damage = damage + damage2; } return damage; } One problem with this implementation is that it is unwieldy to add new creatures. Rewrite the Creature class, and add the child classes to use inheritance, which eliminates the need for the variable type: The Creature class should be the base class. The classes Demon, Elf, and Human should be derived from Creature. The classes Cyberdemon and Balrog should be derived from Demon. You will need to rewrite the getSpecies() and getDamage() functions so they are appropriate for each class. For example, the getDamage() function in each class should only compute the damage appropriate for that object. The total damage is then calculated by combining the results of getDamage() at each level of the inheritance hierarchy. As an example, invoking getDamage() for a Balrog object should invoke getDamage() for the Demon object, which should invoke getDamage() for the Creature object. This will compute the basic damage that all creatures inflict, followed by the random 5% damage that demons inflict, followed by the double damage that balrogs inflict. Also include mutator and accessor functions for the private variables of each class. Write a main function that contains a driver to test your classes. It should create an object for each type of creature and repeatedly outputs the results of getDamage(). // File: fantasymain.cpp // // Main file. This tests the classes by making several // instances of creatures and outputs their damage. #include #include #include #include "human.h" #include "elf.h" #include "balrog.h" #include "cyberdemon.h" using namespace std; // ========================= // ======== main =========== // ========================= // You may have to run this program many times to encounter the // special attacks. int main() { srand(static_cast(time(NULL))); Human h(30, 10); h.getDamage(); cout << endl; Elf e; e.getDamage(); cout << endl; Balrog b(50, 50);; b.getDamage(); cout << endl; Cyberdemon c(30, 40); c.getDamage(); cout << endl; system("pause"); }