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我作为最后的手段来到这里,因为我需要尽快帮助解决明天到期的任务。

我正在用 C++ 组合一个简单的引擎来处理节点、纹理/资产加载和状态系统。我想尝试继续编码与资产相关的东西,但为了做到这一点,我需要状态系统正常工作。

应用程序.h

#pragma once
#include "AppGSM\EGameStateManager.h"

class EGameStateManager;

class EApplication 
{
public:

    static void Init();
    static void RunApp(); 
    EGameStateManager* GetGameStateManager();


protected: 

    static int windowWidth;
    static int windowHeight;
    static bool fullScreen;
    static bool frameSync;
    static char* windowTitle;

};

目前,每当我尝试在我的 teststate 类和 main.cpp 中使用上面看到的指针指向游戏状态管理器时,我都会收到链接器错误。(见下文)

测试状态.cpp

#include "AppGSM\ETestState.h"
#include "AppGSM\EApplication.h"
#include <iostream>

ETestState::ETestState(EApplication* pApp){}

ETestState::~ETestState(){}

void ETestState::Update(float deltaTime)
{
    //if(INPUT::GetKey(KEY_T))
    //{
    //  cout << "Entered Test State" << endl;
    //}

    m_testTimer += deltaTime;

    if(m_testTimer > 3.0f)
    {
        m_pApp->GetGameStateManager()->ChangeState("Second TEST");
    }
}

void ETestState::Draw(){}

主文件

#include "GL\glew.h"
#include "GL\glfw.h"
#include <conio.h>
#include "AppGSM\EApplication.h"
#include "AppGSM\ETestState.h"

void main()
{
    EApplication::Init();

    EApplication* pApp = new EApplication();

    pApp->GetGameStateManager()->SetState("TEST", new ETestState(pApp));

    EApplication::RunApp();
}

这是包含在 teststate 中使用的应用程序指针的基本游戏状态类:

BASEGAMESTATE.h

#pragma once 

class EApplication;
class EGameStateManager;

class EBaseGameState
{
public:

    EBaseGameState(){}
    EBaseGameState(EApplication* pApp);

    //always make the destructor virtual !!
    virtual ~EBaseGameState();

    //all game states must define update and draw
    virtual void Update(float deltaTime)    = 0;
    virtual void Draw()                     = 0;


protected:

    EApplication* m_pApp;


};

这些是链接器错误:

Error   9   error LNK2019: unresolved external symbol "public: class EGameStateManager * __thiscall EApplication::GetGameStateManager(void)" (?GetGameStateManager@EApplication@@QAEPAVEGameStateManager@@XZ) referenced in function _main  D:\Engine\main.obj

Error   10  error LNK2001: unresolved external symbol "public: class EGameStateManager * __thiscall EApplication::GetGameStateManager(void)" (?GetGameStateManager@EApplication@@QAEPAVEGameStateManager@@XZ)   D:\Engine\ETestState.obj

通常我会将链接器错误归结为循环包含,但我已经写下了各种序列图,并且没有包含任何包含自身的东西。它可能很明显..我真的很紧张。任何帮助将非常感激。

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1 回答 1

1

链接器找不到该函数。您需要实现 GetGameStateManager() 函数

于 2013-10-27T06:29:14.843 回答