当我编译时,我正在使用它来加载错误。如果我解决其中一个问题,希望事情会变得更加清晰(如果没有,我可以发布其余部分):
'Weapon' : illegal member initialization: 'Name' is not a base or member
它具有名称和成本。武器继承了Shopable,Shopable在其受保护的部分中具有名称,成本和描述。
Shopable.h:
#ifndef _SHOPABLE_H_
#define _SHOPABLE_H_
#include "Library.h"
class Shopable{
protected:
std::string Name;
int Cost;
std::string Description;
public:
std::string getName() const{return Name;}
int getCost() const {return Cost;}
virtual std::string getDesc() const = 0;
};
#endif
Weapon.h:
#ifndef _WEAPON_H_
#define _WEAPON_H_
#include "Shopable.h"
class Weapon : public Shopable{
private:
int Damage;
public:
Weapon(int c,int d,std::string n) : Cost(c), Damage(d), Name(n){}
std::string getDesc() const{
return getName()+"\t"+tostring(Damage)+"\t"+tostring(Cost);
}
int getDamage() const{return Damage;}
int DamageTarget(Entity* target){
int DamageDealt = 0;
//do damage algorithm things here
return DamageDealt;
}
};
#endif
Library.h:
#ifndef _LIBRARY_
#define _LIBRARY_
#include <iostream>
#include <string>
#include <cstring>
#include <cmath>
#include <cstdio>
#include <cstdarg>
#include <vector>
#include <ctime>
#include <cmath>
#include <cstdlib>
#include <map>
#include <exception>
#include <sstream>
//file includes
#include "Globals.h"
#include "Player.h"
#include "Exception.h"
#include "Weapon.h"
#include "Armour.h"
#include "Consumable.h"
//prototypes that require "Library.h"
bool Poglathon(std::vector<std::string>& text,Player *player);
bool PoglathonTown(std::vector<std::string>& text,Player *player);
std::map<std::string,Weapon*> init_weapons(void);
std::map<std::string,Armour*> init_armour(void);
std::map<std::string,Consumable*> init_consumables(void);
#endif //__LIBRARY__
Globals.h:
//global variables
#ifndef _GLOBAL_
#define _GLOBAL_
#include <vector>
#include <iostream>
#include <string>
//prototypes
void NPCTalk(std::string const& speaker,std::vector<std::string> const& text);
void wait(double seconds);
void regionChange(int amount);
int getPositionInStringVector(std::vector<std::string> const& vec,std::string value);
//variables
//defines
#define RegionChange 3
////tostring
template <class TYPE> std::string tostring(const TYPE & t ) {
std::ostringstream os;
os << t;
return os.str();
};
#endif //__GLOBAL__
答案 0 :(得分:8)
您只能在初始化列表中初始化当前类的成员。 Name
(和Cost
)都是基类的成员;它们必须在基类构造函数中初始化。
最简单的方法是向Shopable
添加构造函数:
class Shopable {
...
public:
Shopable(std::string n, int c, std::string d)
: Name(n), Cost(c), Description(d) {}
...
};
然后在Weapon
初始化列表中使用它:
class Weapon : public Shopable {
...
public:
Weapon(int c,int d,std::string n)
: Shopable(n,c,""), Damage(d)
{}
};
答案 1 :(得分:2)
在
Weapon(int c,int d,std::string n) : Cost(c), Damage(d), Name(n){}
您不能在初始化列表中使用基类的成员。相反,在Shoppable
中定义一个合适的构造函数,并像这样调用它:
Weapon(int c,int d,std::string n) : Shoppable(c, d, n)
答案 2 :(得分:2)
您应该为Shopable创建一个构造函数,并使用它来初始化继承的成员。
class Shopable{
protected:
std::string Name;
int Cost;
std::string Description;
public:
std::string getName() const{return Name;}
int getCost() const {return Cost;}
virtual std::string getDesc() const = 0;
public:
Shopable(std::string n, int c, std::string d) : Name(n), Cost(c), Description(d) {}
};
和
class Weapon : public Shopable{
private:
int Damage;
public:
Weapon(int c,int d,std::string n) : Shopable(n, c, "Weapon"), Damage(d) {} // should probably reorder the parameters to match, just for consistency
std::string getDesc() const{
return getName()+"\t"+tostring(Damage)+"\t"+tostring(Cost);
}
int getDamage() const{return Damage;}
int DamageTarget(Entity* target){
int DamageDealt = 0;
//do damage algorithm things here
return DamageDealt;
}
};