Question

我正在为一个游戏开发课程进行摄入任务，但是在将我的代码分成几个类之后，我被视觉工作室的一个恼人的错误所困扰。错误状态LNK2019 unresolved external symbol _main referenced in function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ)所以我的main函数应该是错误的。我环顾四周，最合乎逻辑的原因似乎是错误的子系统，但这是设置为控制台应用程序。这是我的代码：

Main.cpp的：

#include <Box2D/Box2D.h>
#include <SFML/Graphics.hpp>

#include "Game.hpp"

int main() {
    Game game; //Sets up the game

    game.populateWorld();

    while (game.window.isOpen()) {
        game.checkEvents();

        game.drawBodies();

        game.m_Player->movePlayer();

    }

    return 0;
}

Game.hpp：

#ifndef Game_hpp
#define Game_hpp

#include <SFML/Graphics.hpp>
#include "World.hpp" 
#include "Player.hpp"
class Game {
public:
    Game();
    void checkEvents();
    void drawBodies();//Displays the bodies and keeps the view centered

    //Public data members to be used by other classes
    sf::Texture backGroundTexture;
    sf::Texture playerTex;
    sf::Texture platformTex;//Doesn't have a sprite declared since multiple copy's will be made
    sf::Sprite backGround;
    sf::Sprite player;
    sf::View view;
    sf::RenderWindow window;

    const float m_Scale;//Number of pixels per meter

    Player* m_Player = NULL;
    World* m_World = NULL;
    void populateWorld();
private:
    void loadResources();//Loads resources and applies them where needed
};
#endif // !Game_hpp

World.hpp：

#ifndef World_hpp
#define World_hpp

#include <Box2D/Box2D.h>

class World {
public:
//Public member functions
    World(const float scale);
    ~World();
    void step();
    b2Body* spawnPlayer(float x, float y);

//Public data members
    b2World* world = NULL; //Points to the entire world! Handle with care ;)

    void createPlatform(b2Vec2 point);
private:
//Private data members
    b2Vec2 gravity;
    const float m_Scale;

    //Declaring step values
    float32 m_TimeStep;
    int32 m_VelocityIterators;
    int32 m_PositionIterators;
};

#endif // !World_hpp

Player.hpp：

#ifndef Player_hpp
#define Player_hpp

#include <Box2D/Box2D.h>

#include "World.hpp"

class Player{

public:
    Player(World* world, const float scale, float x, float y);
    void movePlayer();
    b2Body* m_PlayerBody;//A pointer to the player Character's body needed      for the movement
private:
    World* m_World;
    const float m_Scale;
};

#endif // !Player_hpp

希望任何人都可以指出我正确的方向与错误：）

Answer 1

猜猜我是无知的...有一个关于main.cpp的警告使用Mac OS X的行结尾，因为我在iMac上工作我不在乎。但是当我在Notepad ++ EDIT -> EOL Conversion -> Windows Format中修复它时，它就像一个沙姆！我的坏我害怕^^

Answer 2

我通过以下方式解决了我的问题：

1）关闭项目并重新启动PC

2）创建一个新项目并关注这个线程因为我在做GUI http://www.bogotobogo.com/cplusplus/application_visual_studio_2013.php

未解析的外部符号_main引用

2 个答案: