#07 观察者模式
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include<list>
using namespace std;
//抽象的英雄 抽象的观察者
class AbstractHero{
public:
virtual void Update() = 0;
};
//具体英雄 具体观察者
class HeroA :public AbstractHero{
public:
HeroA(){
cout << "英雄A正在撸BOSS ..." << endl;
}
virtual void Update(){
cout << "英雄A停止撸,待机状态..." << endl;
}
};
class HeroB :public AbstractHero{
public:
HeroB(){
cout << "英雄B正在撸BOSS ..." << endl;
}
virtual void Update(){
cout << "英雄B停止撸,待机状态..." << endl;
}
};
class HeroC :public AbstractHero{
public:
HeroC(){
cout << "英雄C正在撸BOSS ..." << endl;
}
virtual void Update(){
cout << "英雄C停止撸,待机状态..." << endl;
}
};
class HeroD :public AbstractHero{
public:
HeroD(){
cout << "英雄D正在撸BOSS ..." << endl;
}
virtual void Update(){
cout << "英雄D停止撸,待机状态..." << endl;
}
};
class HeroE :public AbstractHero{
public:
HeroE(){
cout << "英雄E正在撸BOSS ..." << endl;
}
virtual void Update(){
cout << "英雄E停止撸,待机状态..." << endl;
}
};
//观察目标抽象
class AbstractBoss{
public:
//添加观察者
virtual void addHero(AbstractHero* hero) = 0;
//删除观察者
virtual void deleteHero(AbstractHero* hero) = 0;
//通知所有观察者
virtual void notify() = 0;
};
//具体的观察者 BOSSA
class BOSSA : public AbstractBoss{
public:
virtual void addHero(AbstractHero* hero){
pHeroList.push_back(hero);
}
//删除观察者
virtual void deleteHero(AbstractHero* hero){
pHeroList.remove(hero);
}
//通知所有观察者
virtual void notify(){
for (list<AbstractHero*>::iterator it = pHeroList.begin(); it != pHeroList.end();it ++){
(*it)->Update();
}
}
public:
list<AbstractHero*> pHeroList;
};
void test01(){
//创建观察者
AbstractHero* heroA = new HeroA;
AbstractHero* heroB = new HeroB;
AbstractHero* heroC = new HeroC;
AbstractHero* heroD = new HeroD;
AbstractHero* heroE = new HeroE;
//创建观察目标
AbstractBoss* bossA = new BOSSA;
bossA->addHero(heroA);
bossA->addHero(heroB);
bossA->addHero(heroC);
bossA->addHero(heroD);
bossA->addHero(heroE);
cout << "heroC阵亡..." << endl;
bossA->deleteHero(heroC);
cout << "Boss死了...通知其他英雄停止攻击，抢装备..." << endl;
bossA->notify();
}
int main(void){
test01();
return 0;
}
