学步园

#include <iostream>
#include <vector>
using namespace std;

//
class CMemento
{
public:
	CMemento(int vitality, int attack, int defense) : m_vitality(vitality), m_attack(attack), m_defense(defense) { }
	CMemento& operator=(const CMemento& memento)
	{
		m_vitality = memento.m_vitality;
		m_attack = memento.m_attack;
		m_defense = memento.m_defense;
		return *this;
	}

public:
	int m_vitality;
	int m_attack;
	int m_defense;
};

class CGameRole
{
public:
	CGameRole() : m_vitality(100), m_attack(100), m_defense(100) { }

	CMemento Save()
	{
		CMemento memento(m_vitality, m_attack, m_defense);
		return memento;
	}

	void Load(const CMemento memento)
	{
		m_vitality = memento.m_vitality;
		m_attack = memento.m_attack;
		m_defense = memento.m_defense;
	}

	void Show() { cout<<"vitality:"<<m_vitality<<" attack:"<<m_attack<<" defense:"<<m_defense<<endl; }

	void Attack()
	{
		m_vitality -= 10;
		m_attack -= 10;
		m_defense -= 10;
	}

private:
	int m_vitality;
	int m_attack;
	int m_defense;
};

class CCareTake
{
public:
	void Save(CMemento memento) { m_mementoVec.push_back(memento); }
	CMemento Load(int state) { return m_mementoVec[state]; }

private:
	vector<CMemento> m_mementoVec;
};

//
void main()
{
	CGameRole gameRole;
	gameRole.Show();

	CCareTake caretake;
	caretake.Save(gameRole.Save());

	gameRole.Attack();
	gameRole.Show();

	gameRole.Load(caretake.Load(0));
	gameRole.Show();
}