我正在监督一个技术营地，其中一个营员为一个基于文本的视频游戏创建了一些代码，他无法显示结果。当程序编译并正确运行时，当选择“治疗”时它不会增加玩家的健康状况，当用户选择“攻击”时我们也会得到零。我对编程知识有限，并且我尽力帮助他，以便他在这里的经历将是愉快和充实的。如果您能提供任何帮助或建议，我们将非常感激。这是代码：
// Test for hard stuff.cpp : Defines the entry point for the console application.
//
// Bigger proj
// Constructors will make characters with rolling statistics
#include "stdafx.h"
#include <iostream>
#include <string>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
using namespace std;
// declaring function for hit power
//int power( int str, int def);
int command;
class character
{
public:
character();
//~character();
string name;
float str;
float def;
float health; // hit points
float regen; // health regen amount
float roll; // for random value
float ouch; // amount of attack damage
float getAttack(void);
float getHeal(void);
void setRegen(float reg);
//void setHeal(float healAmt);
private:
};
character::character()
{
srand(time_t(NULL));
str = rand() % 30 + 5;
def = rand() % 30 + 5;
health = 100;
//Output to check the constructor is running properly
cout<< "Character has been created.\n";
}
void character::setRegen( float reg )
{
regen = reg;
}
float character::getAttack()
{
//defines the magnitude/power of attack
//function shows how much damage is inflicted
// ouch is how much damage is done
roll = rand() % 20 + 1; // range between 1 &20
if (roll <= 11)
{
ouch = str - (def /2);
}
else if ((roll <= 17) && (roll >= 12))
{
ouch = (str * 2) - (def / 2);
}
else if ((roll <= 20) && (roll >= 18))
{
ouch = (str * 3) - (def / 2);
//cout << "CRITICAL HIT!!";
}
return ouch;
}
float character::getHeal()
{
//this is what happens when you chose to heal
regen = rand() % 20 + 3;
cout << "regen value= " << regen<< ".\n";
return regen;
}
/*character::~character()
{
str = 0;
def = 0;
health = 0;
// Output to check the destructor is running properly
cout << "Character has been destroyed\n";
} */
int _tmain(int argc, _TCHAR* argv[])
{
//Class objects
character user, computer;
//Hard code in a name for the computer's player
computer.name = "ZOID\n";
float attackDamage;
float healthAdded;
user.setRegen(void);
//Recieve data for the user's player
cout<< "Please enter a name for your character:\n";
cin>> user.name;
//Output name and stats to the user
cout<< "\nYour name is: " << user.name << endl;
cout << "here are your statistics: \n"
<< "strength: " << user.str << endl
<< "Defense: " << user.def << endl
<< "Health: " << user.health << endl;
cout<< "oh no an oppenent appeared!!!\n";
cout<< "you will have to fight him!" << endl<< endl;
cout << "opponent's health: 100" << endl
<< "what would you like to do: heal (1), attack(2), or run(3).\n";
cin>> command;
switch(command)
{
case 1 :
healthAdded = user.getHeal();
cout<< ""<<user.name <<" has regenerated " << healthAdded << " health.\n";
break;
case 2 :
attackDamage = user.getAttack();
cout << "" <<user.name <<" did " << attackDamage << " damage to the opponent!\n";
break;
case 3:
cout<< ""<<user.name<<" got away!\n";
break;
default:
cout<< "Please enter a valid choice!";
} //end switch
return 0;
}
答案 0 :(得分：6)
我会尽力帮助我。我的行号可能与您的行号略有不同，所以请随意浏览一下。
在：
115 user.setRegen(void);
setRegen声明为float：
20 class character
21 {
22 public:
.
.
.
34 void setRegen(float reg);
所以你无法通过void。顺便说一句，在C ++中，习惯上在调用不带参数的函数时不传递任何内容，而不是传递显式的void。但是，明确的void是可以的。
getHeal()函数计算一个随机ammount来修复字符，但它实际上不会增加health成员变量。您可以通过这种方式实现修复，请参阅第92行：
87 float character::getHeal()
88 {
89 //this is what happens when you chose to heal
90 regen = rand() % 20 + 3;
91 cout << "regen value= " << regen<< ".\n";
92 health += regen;
93 return regen;
94 } Z
攻击时你也不会降低对手的生命值。你可以这样做的一种方法是将对手的引用传递给getAttack()并在那里进行修改：
58 float character::getAttack(character& opponent)
59 {
60 //defines the magnitude/power of attack
61 //function shows how much damage is inflicted
62
63
64 // ouch is how much damage is done
65 roll = rand() % 20 + 1; // range between 1 &20
66
67 if (roll <= 11)
68 {
69 ouch = str - (def /2);
70 }
71
72 else if ((roll <= 17) && (roll >= 12))
73 {
74 ouch = (str * 2) - (def / 2);
75 }
76
77 else if ((roll <= 20) && (roll >= 18))
78 {
79 ouch = (str * 3) - (def / 2);
80 //cout << "CRITICAL HIT!!";
81 }
82
83 opponent.health -= ouch;
84
85 return ouch;
86
87 }
您还需要更改getAttack()的声明（原型）：
20 class character
21 {
22 public:
.
.
.
32 float getAttack(character& opponent);
...以及如何在main()中调用它：
152 case 2 :
153
154 attackDamage = user.getAttack(computer);
155
156 cout << "" <<user.name <<" did " << attackDamage << " damage to the opponent!\n";
157
158 break;
我也注意到该程序根本没有循环。它只接受一个动作，执行它并终止。如果游戏循环直到其中一个玩家死亡，游戏可能会更有趣。
最后一件事，当使用随机数时，通常在程序运行开始时调用srand一个。每次创建character时都会调用它。
Here是我之前关于使用rand的一个答案的无耻插件。
我为你做了一些修改。这是一个link to ideone，代码如下：
// Test for hard stuff.cpp : Defines the entry point for the console application.
//
// Bigger proj
// Constructors will make characters with rolling statistics
//#include "stdafx.h"
#include <iostream>
#include <string>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
using namespace std;
// declaring function for hit power
//int power( int str, int def);
int command;
class character
{
public:
character();
//~character();
string name;
float str;
float def;
float health; // hit points
float regen; // health regen amount
float roll; // for random value
float ouch; // amount of attack damage
float getAttack(character& opponent);
float getHeal(void);
void setRegen(float reg);
bool IsAlive() const;
//void setHeal(float healAmt);
private:
};
character::character()
{
str = rand() % 30 + 5;
def = rand() % 30 + 5;
health = 100;
//Output to check the constructor is running properly
cout<< "Character has been created.\n";
}
bool character::IsAlive() const
{
return health > 0.0f;
}
void character::setRegen( float reg )
{
regen = reg;
}
float character::getAttack(character& opponent)
{
//defines the magnitude/power of attack
//function shows how much damage is inflicted
// ouch is how much damage is done
roll = rand() % 20 + 1; // range between 1 &20
if (roll <= 11)
{
ouch = str - (def /2);
}
else if ((roll <= 17) && (roll >= 12))
{
ouch = (str * 2) - (def / 2);
}
else if ((roll <= 20) && (roll >= 18))
{
ouch = (str * 3) - (def / 2);
//cout << "CRITICAL HIT!!";
}
opponent.health -= ouch;
return ouch;
}
float character::getHeal()
{
//this is what happens when you chose to heal
regen = rand() % 20 + 3;
cout << "regen value= " << regen<< ".\n";
health += regen;
return regen;
}
/*character::~character()
{
str = 0;
def = 0;
health = 0;
// Output to check the destructor is running properly
cout << "Character has been destroyed\n";
} */
int main()
{
srand(time_t(NULL));
//Class objects
character user, computer;
//Hard code in a name for the computer's player
computer.name = "ZOID\n";
float attackDamage;
float healthAdded;
user.setRegen(42.0);
//Recieve data for the user's player
cout<< "Please enter a name for your character:\n";
cin>> user.name;
//Output name and stats to the user
cout<< "\nYour name is: " << user.name << endl;
cout << "here are your statistics: \n"
<< "strength: " << user.str << endl
<< "Defense: " << user.def << endl
<< "Health: " << user.health << endl;
cout<< "oh no an oppenent appeared!!!\n";
cout<< "you will have to fight him!" << endl<< endl;
cout << "opponent's health: 100" << endl;
while (user.IsAlive() && computer.IsAlive())
{
cout << "Str: " << user.str << "\t"
<< "Def: " << user.def << "\t"
<< "Health: " << user.health << "\t"
<< "\n";
cout << "what would you like to do: heal (1), attack(2), or run(3).\n";
cin>> command;
switch(command)
{
case 1 :
healthAdded = user.getHeal();
cout<< ""<<user.name <<" has regenerated " << healthAdded << " health.\n";
break;
case 2 :
attackDamage = user.getAttack(computer);
cout << "" <<user.name <<" did " << attackDamage << " damage to the opponent!\n";
break;
case 3:
cout<< ""<<user.name<<" got away!\n";
break;
default:
cout<< "Please enter a valid choice!";
} //end switch
}
return 0;
}
答案 1 :(得分：2)
一般来说，解决此类问题的方法之一是检查逐行发生的情况并确定每条线的作用。它有时很长（很多次，真的），但也很好地确保你不会错过任何东西。在这种特殊情况下，让我们来看看愈合问题。
当你输入switch语句并命中case 1（愈合）时，代码所做的第一件事就是将user.getHeal（）的结果赋给healthAdded。你从这里做的是“进入”getHeal（），看看它做了什么。 getHeal（）获取一个regen编号，并将其分配给regen。然后打印regen，最后返回存储在regen中的值。
现在我们知道了getHeal（）的作用，我们可以跳回到我们的案例1：并完全说出第一行的作用。它需要在getHeal（）中构建的regen值并将其分配给healthAdded。
案例1：然后在休息前打印healthAdded中的值;声明。休息;完成案例1。
因此，您的代码以快速列表形式执行的操作是：
您想要做的是根据regen值修改用户的运行状况，因此您缺少一步：使用您在getHeal（）中构建的regen编号更改user.health值。
攻击破坏的问题与此类似，请尝试将您希望代码执行的目标与您看到的代码实际执行的内容进行比较。