c++ - 变量变化值和不确定原因

问题描述

所以我对 c++ 和一般编程还是很陌生，但我想假设我对概念和控制流有相当好的掌握（可能是大声笑）。我目前正在创建一个自上而下的游戏，允许用户与箱子的库存进行交互。让我非常困惑的问题是我修改了一个变量，但是在“更新”控制台之后它变成了完全不同的东西。按 s 更新控制台后显示 10 金币的交互式胸部库存

在 chestLoot() 函数中，宝箱中的金币数量设置为 10，但随后更改为 303，这是治疗药水的宏。为什么我设置为 10 后，chest.gold 值变为 303？对此的任何帮助将不胜感激。（不要太苛刻，我对堆栈溢出和 c++ 以及一般编程还是新手）

这是处理胸部库存以及生成的战利品的代码：

void chestLoot(int x)
{

    switch (tutorial.chestIt)
    {
    case 0:
        chest.inventory[x] = WOODEN_SWORD_ID;
        break;

    case 1:
        chest.inventory[x] = GOLD_ID;
        chest.gold = 10;
        break;

    case 2:
        chest.inventory[x] = HEALING_POTION_ID;
        break;

    case 3:
        chest.inventory[x] = LEATHER_HELMET_ID;
        break;
    }
    tutorial.chestIt++;
}
void chestInventory()
{
    bool endLoop = false;
    int x = 0;
    int selection = 0;
    int highlighted = 0;

    while (endLoop == false)
    {
        system("cls");
        std::cout << "Chest:" << std::endl << std::endl;
        if (tutorial.gridChestOpened == false)
            updatePlayer(5);
        for (x = 0; x <= player.level + 3; x++)
        {
            if (tutorial.gridChestOpened == false)
            {
                chestLoot(x);
            }
            switch (chest.inventory[x])
            {
            case WOODEN_SWORD_ID:
                std::cout << x + 1 << ". ";
                if (selection == x)
                {
                    std::cout << "- ";
                    highlighted = selection;
                }
                std::cout << "Wooden Sword";
                break;

            case GOLD_ID:
                std::cout << x + 1 << ". ";
                if (selection == x)
                {
                    std::cout << "- ";
                    highlighted = selection;
                }
                std::cout << chest.gold << " Gold";
                break;

            case HEALING_POTION_ID:
                std::cout << x + 1 << ". ";
                if (selection == x)
                {
                    std::cout << "- ";
                    highlighted = selection;
                }
                std::cout << "Healing Potion";
                break;

            case LEATHER_HELMET_ID:
                std::cout << x + 1 << ". ";
                if (selection == x)
                {
                    std::cout << "- ";
                    highlighted = selection;
                }
                std::cout << "Leather Helmet";
                break;

            case NULL:
                break;
            }
            std::cout << std::endl;
        }
        tutorial.gridChestOpened = true;
        switch (_getch())
        {
        case 'w':
            --selection;
            if (selection < 0)
                selection = 0;
            if (chest.inventory[selection] == NULL)
                ++selection;
            break;

        case 's':
            ++selection;
            if (selection > tutorial.chestIt)
                selection = tutorial.chestIt;
            if (chest.inventory[selection] == NULL)
                --selection;
            break;

        case 'e':
            if (chest.inventory[highlighted] == 0)
            {
                std::cout << "There is nothing there";
                break;
            }
            else if (chest.inventory[highlighted] == GOLD_ID)
            {
                player.gold = player.gold + chest.gold;
                chest.inventory[highlighted] = NULL;
                break;
            }
            else
            {
                for (int y = 1; y <= player.level + 9; y++)
                {
                    if (player.inventory[y] == NULL)
                    {
                        player.inventory[y] = chest.inventory[highlighted];
                        chest.inventory[highlighted] = NULL;
                    }
                }
            }
            break;

        case 27:
            endLoop = true;
            drawScreen(NULL);
            break;
        }
    }
}

以下是函数中使用的全局变量：

struct Loot
{
    int inventory[2];
    int gold;
}chest, pot;
struct Entity
{
    int position[2] = { 2, 2 };
    int gold = 0;

    int health = 10;
    int level = 1;
    int totalXp = 0;
    int inventory[11];

    int mainHand[2] = {/*location, item*/};
}player/*enemy*/;
struct Grid 
{
    int grid[6][12] = {
       {1,1,1,1,1,1,1,1},
       {1,0,0,0,0,0,0,1,1,1,1,1},
       {1,0,0,0,0,2,0,1,0,0,3,1},
       {1,0,2,0,0,0,0,1,0,0,0,1},
       {1,0,0,0,0,2,0,0,0,0,0,1},
       {1,1,1,1,1,1,1,1,1,1,4,1}
    };
    bool gridChestOpened = false;
    int chestIt = 0;
}tutorial;

// Item ID's
#define WOODEN_SWORD_ID        301
#define GOLD_ID                302
#define HEALING_POTION_ID      303
#define LEATHER_HELMET_ID      304

任何关于改进我的代码的提示也非常感谢:)

2 : Check Here将变量从一个函数传递到另一个函数

标签： c++

c++ - 变量变化值和不确定原因

问题描述

解决方案

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