我有一个包含 20 多个类/头文件的程序。一切都很顺利，直到我昨天开始做一些改变。从字面上看，我花了很长时间才发现我需要在其中一个标题上进行前向声明。虽然我昨天有同样的工作并且它没有使用类的前向声明。
我让它编译并正确运行。我尝试再添加一种方法。我又开始遇到所有这些可怕的错误！就像我说的，昨天所有这些东西都在工作，不知何故我做了一个改变，并不断收到错误说“生物尚未被声明”，即使我没有改变那个类或任何东西..以及同样的错误其他类和这些类的其他对象。
标头包含在它说错误所在的文件中 - 我什至可能添加了额外的包含只是为了尝试一下。这太令人沮丧了，我花了几个小时试图弄清楚如何回到昨天的状态。我尝试简单地添加另一个功能，同样的事情发生了！！请帮助我解决这种持续的挫败感。这是我得到的当前错误：
g++ -c Ammunition.cpp -o Ammunition.o -std=c++0x
g++ -c Armor.cpp -o Armor.o -std=c++0x
g++ -c Consumable.cpp -o Consumable.o -std=c++0x
g++ -c Creature.cpp -o Creature.o -std=c++0x
In file included from DungeonLevel.h:4:0,
from Creature.h:5,
from Creature.cpp:1:
Tile.h:15:19: error: ‘Creature’ has not been declared
Tile.h:16:2: error: ‘Creature’ does not name a type
Tile.h:38:2: error: ‘Creature’ does not name a type
In file included from DungeonLevel.h:7:0,
from Creature.h:5,
from Creature.cpp:1:
Player.h:9:32: error: expected class-name before ‘{’ token
make: *** [Creature.o] Error 1
这是错误所在的头文件和片段
地牢等级.h
#include "Tile.h"
#include <vector>
#include <random>
#include "Player.h"
class Player; //This is how I fixed the error that took me all day when "Player" was not
//declared. If you take it out, You'll get error "Player not declared"
class DungeonLevel {
public:
DungeonLevel(int iWidth, int iHeight, std::mt19937 & randomGen);
~DungeonLevel(void);
void dump();
char at(int x, int y);
void placeInGame(Player& playerToPlace, std::mt19937 & randomGen);
int getWidth();
int getHeight();
private:
std::vector<std::vector<Tile>> m_vvTiles; //Tile was char
};
地牢关卡.cpp
#include <iostream>
#include <random>
#include "Tile.h"
#include "DungeonLevel.h"
#include "Player.h"
using namespace std;
void DungeonLevel::placeInGame(Player & playerToPlace, std::mt19937 & randomGen$
int x;
int y;
do {
y = randomGen() % 20;
x = randomGen() % 79;
} while (m_vvTiles[y][x].getDisplayChar() != '.');
m_vvTiles[y][x].setCreature(&playerToPlace);
}
//Then other code that I don't think is needed
生物.h
#include "Entity.h"
#include "DungeonLevel.h"
class Creature : public Entity {
public:
Creature(void);
virtual ~Creature(void);
virtual void dumpObject();
virtual void dumpObjectData();
virtual void writeFragment(std::ostream & output);
virtual void writeDataAsFragment(std::ostream & output);
virtual void setElementData(std::string elementName, std::string elemen$
virtual void move(int dir, DungeonLevel & dl);
virtual void setXLoc(int xToSet);
virtual int getXLoc();
virtual void setYLoc(int yToSet);
virtual int getYLoc();
virtual int getLevel();
virtual void setLevel(int levelToSet);
virtual int getHP();
virtual void setHP(int HPToSet);
virtual int getMaxHP();
virtual void setMaxHP(int maxHPToSet);
private:
int xLoc;
int yLoc;
int level;
int HP;
int maxHP;
// Not worried about inventory yet...
//std::vector<Item*> m_vInventory;
};
生物.cpp
#include "Creature.h"
#include <cstdlib>
#include "DungeonLevel.h"
using namespace std;
Creature::Creature(void){
HP = 0;
maxHP = 0;
level = 0;
}
Creature::~Creature(void){
}
void Creature::move(int dir, DungeonLevel & dl){
//If I take the DungeonLevel & dl param. out.. I don't get errors
}
void Creature::dumpObject(){
cout << "Creature:" << endl;
dumpObjectData();
}
//The rest shouldn't be needed
瓷砖.h
#include "Creature.h"
#include "Item.h"
#include <vector>
class Tile : public Entity {
public:
Tile(void);
Tile(char ch);
virtual ~Tile(void);
void setCreature(Creature * creatureToSet);
Creature * getCreature();
void setDisplayChar(char displayCharToSet);
char getDisplayChar();
private:
char displayChar;
Creature * theCreature;
std::vector<Item*> inventory;
};
瓷砖.cpp
#include "Tile.h"
#include "Entity.h"
using namespace std;
Tile::Tile(void){
displayChar = ' ';
theCreature = NULL;
}
Tile::Tile(char ch) {
setDisplayChar(ch);
theCreature = NULL;
}
Tile::~Tile(void){
}
void Tile::setDisplayChar(char displayCharToSet){
displayChar = displayCharToSet;
}
char Tile::getDisplayChar(){
if ( theCreature != NULL ){
return theCreature->getDisplayChar();
}
else {
return displayChar;
}
}
void Tile::setCreature(Creature * creatureToSet){
theCreature = creatureToSet;
}
Creature * Tile::getCreature(){
return theCreature;
}
播放器.h
#include "Creature.h"
#include "Weapon.h"
#include "Armor.h"
#include "DungeonLevel.h"
class Player : public Creature {
public:
Player(void);
virtual ~Player(void);
virtual void dumpObject();
virtual void dumpObjectData();
virtual void writeFragment(std::ostream & output);
virtual void writeDataAsFragment(std::ostream & output);
virtual void setElementData(std::string elementName, std::string elemen$
virtual int getScore();
virtual void setScore(int scoreToSet);
virtual int getXp();
virtual void setXp(int xpToSet);
virtual void setPlayerWeapon(Weapon* playerWeaponToSet);
virtual Weapon* getPlayerWeapon();
virtual void setPlayerArmor(Armor* playerArmorToSet);
virtual Armor* getPlayerArmor();
private:
//Creature provides level, HP, and maxHP
int score;
int xp;
Weapon * playerWeapon;
Armor * playerArmor;
};
播放器.cpp
#include "Player.h"
#include "Creature.h"
#include <cstdlib>
using namespace std;
Player::Player(void){
setMaxHP(25);
setHP(getMaxHP());
setLevel(1);
setDisplayChar('o');
score = 0;
xp = 0;
}
Player::~Player(void){
}
//the rest shouldn't be needed
请帮助我，谢谢！让我知道是否需要提供更多。谢谢！