我在另一个程序上遇到这个问题,但是我试图用这个简化它。我无法通过p.getWeaopn()。setName(“ sword”);来设置武器名称。当我只是通过它自己的对象对其进行设置时,它可以正常工作,但是当我尝试通过播放器访问设置器时,它什么也没设置。
#include <iostream>
#include <string>
#include "Player.h"
#include "Weapon.h"
using namespace std;
int main()
{
Player p; // Player contains only a Weapon weapon;
Weapon w; // Weapon only contains a string name;
//w.setName("sword"); // this changes the name of the weapon
p.setWeapon(w);
p.weapon.setName("sword"); // this also changes the name
p.getWeapon().setName("sword"); // this is not setting the name. Why?
// checking if weapon has a name
if (p.getWeapon().getName().empty())
{
cout << "Weapon name is empty!" << endl;
}
else
{
cout << "Weapon name is " << p.getWeapon().getName() << endl;
}
}
Weapon.h
#pragma once
#include <string>
using namespace std;
class Weapon
{
private:
string name;
public:
string getName();
void setName(string);
};
Weapon.cpp
#include "Weapon.h"
string Weapon::getName()
{
return name;
}
void Weapon::setName(string n)
{
name = n;
}
Player.h
#pragma once
#include "Weapon.h"
class Player
{
private:
public:
Weapon *weapon;
Weapon* getWeapon();
void setWeapon(Weapon*);
};
Player.cpp
#include "Player.h"
Weapon* Player::getWeapon()
{
return weapon;
}
void Player::setWeapon(Weapon* w)
{
weapon = w;
}
最佳猜测p.getWeapon()每次都会返回武器的新副本,而不是对武器的引用。更改副本中的名称不会更改原始名称。