設計模式 --策略模式

#include<iostream>
using namespace std;

//策略模式定義了一系列算法，並將每一個算法封裝起來，而且使他們還可以相互替換
//策略模式讓算法獨立於使用它的客戶而獨立變化

//抽象武器   武器策略
class WeaponStrategy
{
public:
	virtual void UseWeapon() = 0;
};

class Knife :public WeaponStrategy
{
public:
	virtual void UseWeapon()
	{
		cout << "使用匕首。。。" << endl;
	}
};

class AK47 :public WeaponStrategy
{
public:
	virtual void UseWeapon()
	{
		cout << "使用AK47。。。" << endl;
	}
};

class Character {
public:
	void setWeapon(WeaponStrategy* weapan) {
		this->pWeapan = weapan;
	}
	void ThrowWeapon()
	{
		this->pWeapan->UseWeapon();
	}


public:
	WeaponStrategy* pWeapan;
};


void test01()
{
	//創建角色
	Character* character = new Character;

	//武器策略
	WeaponStrategy* pKnife = new Knife;

	character->setWeapon(pKnife);
	character->ThrowWeapon();
}

int main() {

	test01();

	system("pause");
	return 0;
}