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vlaleli/abstractfactory.cpp

Created March 11, 2026 12:31
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abstractfactory.cpp
#include <iostream>
#include <vector>
#include <string>
using namespace std;
class Herbivore {
protected:
int weight;
bool life;
public:
Herbivore(int w) : weight(w), life(true) {}
virtual ~Herbivore() {}
virtual void EatGrass() = 0;
virtual string GetName() const = 0;
int GetWeight() const {
return weight;
}
bool IsAlive() const {
return life;
}
void SetLife(bool state) {
life = state;
}
};
class Carnivore {
protected:
int power;
public:
Carnivore(int p) : power(p) {}
virtual ~Carnivore() {}
virtual void Eat(Herbivore* herbivore) = 0;
virtual string GetName() const = 0;
int GetPower() const {
return power;
}
};
class Wildebeest : public Herbivore {
public:
Wildebeest() : Herbivore(50) {}
void EatGrass() override {
if (life) {
weight += 10;
cout << "Wildebeest eats grass. Weight = " << weight << endl;
}
}
string GetName() const override {
return "Wildebeest";
}
};
class Bison : public Herbivore {
public:
Bison() : Herbivore(60) {}
void EatGrass() override {
if (life) {
weight += 10;
cout << "Bison eats grass. Weight = " << weight << endl;
}
}
string GetName() const override {
return "Bison";
}
};
class Elk : public Herbivore {
public:
Elk() : Herbivore(70) {}
void EatGrass() override {
if (life) {
weight += 10;
cout << "Elk eats grass. Weight = " << weight << endl;
}
}
string GetName() const override {
return "Elk";
}
};
class Lion : public Carnivore {
public:
Lion() : Carnivore(80) {}
void Eat(Herbivore* herbivore) override {
if (!herbivore->IsAlive()) {
cout << "Lion cannot eat dead " << herbivore->GetName() << endl;
return;
}
cout << "Lion attacks " << herbivore->GetName() << endl;
if (power > herbivore->GetWeight()) {
power += 10;
herbivore->SetLife(false);
cout << "Lion wins. Power = " << power << endl;
} else {
power -= 10;
cout << "Lion loses. Power = " << power << endl;
}
}
string GetName() const override {
return "Lion";
}
};
class Wolf : public Carnivore {
public:
Wolf() : Carnivore(65) {}
void Eat(Herbivore* herbivore) override {
if (!herbivore->IsAlive()) {
cout << "Wolf cannot eat dead " << herbivore->GetName() << endl;
return;
}
cout << "Wolf attacks " << herbivore->GetName() << endl;
if (power > herbivore->GetWeight()) {
power += 10;
herbivore->SetLife(false);
cout << "Wolf wins. Power = " << power << endl;
} else {
power -= 10;
cout << "Wolf loses. Power = " << power << endl;
}
}
string GetName() const override {
return "Wolf";
}
};
class Tiger : public Carnivore {
public:
Tiger() : Carnivore(90) {}
void Eat(Herbivore* herbivore) override {
if (!herbivore->IsAlive()) {
cout << "Tiger cannot eat dead " << herbivore->GetName() << endl;
return;
}
cout << "Tiger attacks " << herbivore->GetName() << endl;
if (power > herbivore->GetWeight()) {
power += 10;
herbivore->SetLife(false);
cout << "Tiger wins. Power = " << power << endl;
} else {
power -= 10;
cout << "Tiger loses. Power = " << power << endl;
}
}
string GetName() const override {
return "Tiger";
}
};
class Continent {
public:
virtual ~Continent() {}
virtual Herbivore* CreateHerbivore() = 0;
virtual Carnivore* CreateCarnivore() = 0;
};
class Africa : public Continent {
public:
Herbivore* CreateHerbivore() override {
return new Wildebeest();
}
Carnivore* CreateCarnivore() override {
return new Lion();
}
};
class NorthAmerica : public Continent {
public:
Herbivore* CreateHerbivore() override {
return new Bison();
}
Carnivore* CreateCarnivore() override {
return new Wolf();
}
};
class Eurasia : public Continent {
public:
Herbivore* CreateHerbivore() override {
return new Elk();
}
Carnivore* CreateCarnivore() override {
return new Tiger();
}
};
class AnimalWorld {
private:
vector<Herbivore*> herbivores;
vector<Carnivore*> carnivores;
public:
AnimalWorld(Continent* continent, int count = 3) {
for (int i = 0; i < count; i++) {
herbivores.push_back(continent->CreateHerbivore());
carnivores.push_back(continent->CreateCarnivore());
}
}
~AnimalWorld() {
for (size_t i = 0; i < herbivores.size(); i++) {
delete herbivores[i];
}
for (size_t i = 0; i < carnivores.size(); i++) {
delete carnivores[i];
}
}
void MealsHerbivores() {
cout << "Herbivores are eating:" << endl;
for (size_t i = 0; i < herbivores.size(); i++) {
herbivores[i]->EatGrass();
}
}
void NutritionCarnivores() {
cout << "Carnivores are hunting:" << endl;
for (size_t i = 0; i < carnivores.size(); i++) {
carnivores[i]->Eat(herbivores[i]);
}
}
void ShowState() {
cout << "Herbivores:" << endl;
for (size_t i = 0; i < herbivores.size(); i++) {
cout << herbivores[i]->GetName()
<< " Weight = " << herbivores[i]->GetWeight()
<< " Life = " << (herbivores[i]->IsAlive() ? "Alive" : "Dead") << endl;
}
cout << "Carnivores:" << endl;
for (size_t i = 0; i < carnivores.size(); i++) {
cout << carnivores[i]->GetName()
<< " Power = " << carnivores[i]->GetPower() << endl;
}
}
};
int main() {
Africa africa;
NorthAmerica northAmerica;
Eurasia eurasia;
cout << "AFRICA" << endl;
AnimalWorld world1(&africa);
world1.ShowState();
world1.MealsHerbivores();
world1.NutritionCarnivores();
world1.ShowState();
cout << endl;
cout << "NORTH AMERICA" << endl;
AnimalWorld world2(&northAmerica);
world2.ShowState();
world2.MealsHerbivores();
world2.NutritionCarnivores();
world2.ShowState();
cout << endl;
cout << "EURASIA" << endl;
AnimalWorld world3(&eurasia);
world3.ShowState();
world3.MealsHerbivores();
world3.NutritionCarnivores();
world3.ShowState();
return 0;
}
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