#include <string>
#include <iostream>
#include <vector>

class Item
{
public:

    Item(double weight)
        : weight { weight }
    {
    }

    virtual ~Item() = default;
    
    double get_weight() const
    {
        return weight;
    }

    virtual void print(std::ostream& os) const = 0;
    
protected:

    virtual void print_info(std::ostream& os) const
    {
        os << "(" << weight << " kg)";
    }
    
    double weight;
    
};

class Shovel : public Item
{
public:

    Shovel()
        : Item { 3.0 }
    {
    }

    void print(std::ostream& os) const override
    {
        os << "A shovel ";
        print_info(os);
    }
    
};

class Weapon : public Item
{
public:

    Weapon(double damage, double weight)
        : Item { weight }, damage { damage }
    {
    }

    double get_damage() const
    {
        return damage;
    }
    
protected:

    void print_info(std::ostream& os) const override
    {
        os << "dealing " << damage << " damage ";
        Item::print_info(os);
    }
    
    double damage;
    
};

class Sword : public Weapon
{
public:

    Sword(std::string const& name, double damage, double weight)
        : Weapon { damage, weight }, name { name }
    {
    }

    void print(std::ostream& os) const override
    {
        os << "Sword named '" << name << "' ";
        print_info(os);
    }
    
protected:

    std::string name;
    
};

class Bow : public Weapon
{
public:

    using Weapon::Weapon;
    void print(std::ostream& os) const override
    {
        os << "A bow ";
        print_info(os);
    }
    
};

int main()
{
    std::vector<Item*> bag {
        new Sword { "Sword of stabbing", 10.0, 2.5 },
        new Sword { "Sword of pricking", 5.0, 0.9 },
        new Bow   { 7.5, 0.6 },
        new Shovel { }
    };

    double total_weight { 0.0 };
    double greatest_damage { 0.0 };
    
    std::cout << "Your bag contains: " << std::endl;
    for (Item* item : bag)
    {
        std::cout << " - ";
        item->print(std::cout);
        std::cout << std::endl;

        Weapon* weapon = dynamic_cast<Weapon*>(item);
        if (weapon != nullptr)
        {
            if (weapon->get_damage() > greatest_damage)
            {
                greatest_damage = weapon->get_damage();
            }
        }
        
        total_weight += item->get_weight();
    }
    std::cout << "Total weight: " << total_weight << " kg" << std::endl;
    std::cout << "Best damage: " << greatest_damage << " damage" << std::endl;

    for (Item* item : bag)
    {
        delete item;
    }
}