装饰器模式案例

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>

using namespace std;


//一般情况下 用继承实现类的功能

//抽象英雄
class AbstractHero
{
public:
	virtual void ShowStatus() = 0;
	int mHp;
	int mMp;
	int mAt;
	int mDf;
};

//具体英雄
class HeroA : public AbstractHero
{
public:
	HeroA()
	{
		mHp = 0;
		mMp = 0;
		mAt = 0;
		mDf = 0;
	}
	virtual void ShowStatus()
	{
		cout << "血量：" << mHp << endl;
		cout << "魔法：" << mMp << endl;
		cout << "攻击：" << mAt << endl;
		cout << "防御：" << mDf << endl;
	}
};

//英雄穿上某个装饰物，那么他还是个英雄
class AbstractEquipment : public AbstractHero
{
public:
	AbstractEquipment(AbstractHero* hero)
	{
		this->pHero = hero;
	}
	virtual void ShowStatus() {}
	AbstractHero* pHero;
};

class KuangtuEquioment : public AbstractEquipment
{
public:
	KuangtuEquioment(AbstractHero* hero) : AbstractEquipment(hero) {}
	//额外增加功能
	void AddKuangtu()
	{
		cout << "英雄穿上狂徒之后..." << endl;
		this->mHp = this->pHero->mHp;
		this->mMp = this->pHero->mMp;
		this->mAt = this->pHero->mAt;
		this->mDf = this->pHero->mDf + 30;

		delete this->pHero;
	}
	virtual void ShowStatus()
	{
		AddKuangtu();
		cout << "血量：" << mHp << endl;
		cout << "魔法：" << mMp << endl;
		cout << "攻击：" << mAt << endl;
		cout << "防御：" << mDf << endl;
	}
};

class WujinzhiKnife : public AbstractEquipment
{
public:
	WujinzhiKnife(AbstractHero* hero) : AbstractEquipment(hero) {}
	//额外增加功能
	void AddWujinzhiKnife()
	{
		cout << "英雄装备无尽之刃之后..." << endl;
		this->mHp = this->pHero->mHp;
		this->mMp = this->pHero->mMp;
		this->mAt = this->pHero->mAt + 80;
		this->mDf = this->pHero->mDf;

		delete this->pHero;
	}
	virtual void ShowStatus()
	{
		AddWujinzhiKnife();
		cout << "血量：" << mHp << endl;
		cout << "魔法：" << mMp << endl;
		cout << "攻击：" << mAt << endl;
		cout << "防御：" << mDf << endl;
	}
};


void test01()
{
	AbstractHero* hero = new HeroA;
	hero->ShowStatus();

	cout << "---------------------" << endl;

	//给裸奔的英雄穿上狂徒
	hero = new KuangtuEquioment(hero);
	hero->ShowStatus();

	cout << "---------------------" << endl;

	//给英雄装备武器
	hero = new WujinzhiKnife(hero);
	hero->ShowStatus();

}



int main()
{
	test01();
	

	return 0;
}