如何在类之间传递变量值

Question

所以我做一个小项目只是为了好玩（因为在我的课堂上我们根本没有做任何有趣的事情）试图复制旧 RPG 的战斗系统，我遇到了这个问题：我有 2类，一个需要另一个类的变量的值。虽然我还是有点新，所以请不要把任何事情视为理所当然。代码如下：

#include<iostream>
#include<string>
#include<stdlib.h>
#include<time.h>

class Moveset
{
    int pp;
    int precision;
    std::string moveName;
public:
    bool hit(int precision)
    {
        srand(time(0));
        int randomNumber = rand() % 100 + 1;
        if (randomNumber <= precision && randomNumber >= 1)
        {
            return true;
        }
        else
        {
            return false;
        }
    }

    void scratch(float &HP)
    {
        pp = 15;
        precision = 80;
        moveName = "scratch";

        bool success = hit(precision);


        //here i want to replace the question marks with the playerName from
        //the player class, but how can i do that?

        std::cout << "??? used " << moveName << " !" << std::endl;
        pp--;

        if (success)
        {
            HP = HP - 20;

            std::cout << "HP: " << HP << std::endl;
        }
        else
        {
            std::cout << "It missed!" << std::endl;
        }
    }

};

class Player
{
public:

    float HP;
    std::string playerName;
    int age;
    Moveset ptr0;
};

int main()
{

    for (int i = 0; i <= 2; i++)
    {
        switch (i)
        {
        case 0:
            std::cout << "Welcome to the test of this special combat system!" << std::endl;
            break;
        case 1:
            std::cout << "In this small test you'll have access of a prototype of it!" << std::endl;
            break;
        case 2:
            std::cout << "Now get ready and experience the first version ever! Go!" << std::endl;
            break;
        default:
            break;

        }
        system("pause");
        system("cls");
    }

    Moveset Move;
    Player Niko;
    Niko.HP = 100;
    Niko.playerName = "Niko";
    Niko.ptr0 = Move;
    Niko.ptr0.scratch(Niko.HP);
    system("pause");

}

Answer 1

更好的使用对象，像这样：

void scratch(Player &p)

因此，您将拥有所有玩家数据，而不仅仅是 HP。

您将在 Player 和 Moveset 类之间存在交叉依赖关系，但这是另一个问题，您也可以在它自己的 Moveset 中保留对 Player 的引用，或者使用接口.