编程小练习

* 问题描述: 杀伤距离的限制
 */
#include<iostream>
#include<cstring>
#include<cmath>
using namespace std;
class Point
{
public:
    Point (int x=0,int y=0);
    int getX();
    int getY();
    double distance(const Point &p);//返回与另外一点p之间的距离
    void moveTo(int x,int y);
    void move(int dx,int dy);
private:
    int x;
    int y;
};
class Weapon
{
public:
    Weapon(string wnam,int f,double k);
    Weapon(const Weapon&);
    string getWname();
    int getForce();
    double getKillRange();//返回杀伤距离
private:
    string wname;
    int force;
    double killRange;
};
class Role
{
public:
    Role (string nam,int b,Point l,Weapon w);
    ~Role();
    void eat(int d);
    void attack(Role &r);
    void beAttack(int f);
    double distance(Role &r);
    bool isAlived();
    void moveTo(int x,int y);
    void move(int dx,int dy);
    void show();
private:
    string name;
    int blood;
    bool life;
    Point location;
    Weapon weapon;
};
Point::Point(int x,int y):x(x),y(y){}
int Point::getX()
{
    return x;
}
int Point::getY()
{
    return y;
}
void Point::moveTo(int dx,int dy)
{
    this->x=x;
    this->y=y;
}
void Point::move(int dx,int dy)
{
    this->x+=dx;
    this->y+=dy;
}
double Point::distance(const Point &p)
{
    double dx=this->x-p.x;
    double dy=this->y-p.y;
    return (sqrt(dx * dx + dy * dy));

}
Weapon::Weapon(string wnam,int f,double k):wname(wnam),force(f),killRange(k){}
Weapon::Weapon(const Weapon &w):wname(w.wname),force(w.force),killRange(w.killRange){}
string Weapon::getWname()
{
    return wname;
}
int Weapon::getForce()
{
    return force;
}
double Weapon::getKillRange()
{
    return killRange;
}
Role::Role(string nam, int b, Point l, Weapon w):name(nam),blood(b),location(l),weapon(w)
{
    if(blood>0)
        life=true;
    else
        life=false;
}
Role::~Role()
{
    cout<<name<<"退出江湖..."<<endl;
}
void Role::eat(int d){
    blood+=d;
    if(blood>0)
        life=true;
}
void Role::attack(Role &r){
    if(isAlived()&&weapon.getKillRange()>this->distance(r))     {
        blood+=weapon.getForce();
        r.beAttack(weapon.getForce());
    }
}

void Role::beAttack(int f)
{
    blood-=f;
    if(blood<=0)
        life=false;
}

double Role::distance(Role &r)
{
    return location.distance(r.location);
}

bool Role::isAlived()
{
    return life;
}

void Role::moveTo(int x, int y)
{
    if(isAlived())
        location.moveTo(x,y);
}

void Role::move(int dx, int dy)
{
    if(isAlived())
        location.move(dx,dy);
}

void Role::show()
{
    cout<<name<<" has "<<blood<<" blood, hold "<<weapon.getWname();
    cout<<". He is in ("<<location.getX()<<", "<<location.getY()<<") and ";
    if(isAlived())
        cout<<"alived.";
    else
        cout<<"dead.";
    cout<<endl;
}
int main()
{
    Weapon w1("Gold stick",200, 100), w2("Fire point gun",180,300);
    Role wuKong("WuKong", 500, Point(0, 0), w1);
    Role neZha("NeZha", 210, Point(30,30), w2);
    cout<<"---begin---"<<endl;
    wuKong.show();
    neZha.show();
    cout<<"---1st round---"<<endl;
    wuKong.attack(neZha);
    wuKong.show();
    neZha.show();
    cout<<"---2nd round---"<<endl;
    neZha.attack(wuKong);
    wuKong.show();
    neZha.show();
    cout<<"---3rd round---"<<endl;
    neZha.moveTo(100,100);
    wuKong.attack(neZha);
    wuKong.show();
    neZha.show();
    cout<<"---4th round---"<<endl;
    neZha.attack(wuKong);
    wuKong.show();
    neZha.show();
    cout<<"---then---"<<endl;
    neZha.attack(wuKong);
    neZha.attack(wuKong);
    wuKong.attack(neZha);
    wuKong.show();
    neZha.show();
    cout<<"---end---"<<endl;
    return 0;

}