我有一个 C++ 类，尽管我有另一个用类似语法编写的类，并且可以毫不费力地编译，但我一直收到此错误。
这是我的.h：
#ifndef FISHPLAYER_H
#define FISHPLAYER_H
#include "Player.h"
class FishPlayer : public Player
{
public:
float xThrust;
float yThrust;
static FishPlayer* getInstance();
protected:
private:
FishPlayer();
~FishPlayer();
static FishPlayer* instance;
};
#endif
这是我的 .cpp ：
#include "..\include\FishPlayer.h"
FishPlayer* FishPlayer::instance=0; // <== I Get The Error Here
FishPlayer::FishPlayer()
{
//ctor
xThrust = 15.0f;
yThrust = 6.0f;
}
FishPlayer::~FishPlayer()
{
//dtor
}
FishPlayer* FishPlayer::getInstance() { // <== I Get The Error Here
if(!instance) {
instance = new FishPlayer();
}
return instance;
}
我已经找了一段时间了，它一定是大到我看不到的东西。
这是继承：
#ifndef PLAYER_H
#define PLAYER_H
#include "Ennemy.h"
class Player : public Ennemy
{
public:
protected:
Player();
~Player();
private:
};
#endif // PLAYER_H
还有更高的：
#ifndef ENNEMY_H
#define ENNEMY_H
#include "Doodad.h"
class Ennemy : public Doodad
{
public:
float speedX;
float maxSpeedX;
float speedY;
float maxSpeedY;
float accelerationX;
float accelerationY;
Ennemy();
~Ennemy();
protected:
private:
};
和超类
#include <vector>
#include <string>
enum DoodadType{FishPlayer,Player,AstroPlayer,Ennemy,DoodadT = 999};
enum DoodadRange{Close, Medium , Far};
enum EvolutionStage{Tiny, Small, Average, Large};
class Doodad
{
public:
float score;
void die();
EvolutionStage evolutionStage;
DoodadRange range;
Doodad();
virtual ~Doodad();
Doodad(Doodad const& source);
std::vector<Animation> animations;
double posX;
double posY;
std::string name;
std::string currentAnimation;
int currentFrame;
DoodadType type();
SDL_Surface getSpriteSheet();
bool moving;
void update();
protected:
private:
SDL_Surface spriteSheet;
};