Question

Ey和

我的游戏需要一些帮助。我正在尝试更改介绍类中的游戏状态，但它会产生很多错误。

Intro.h

#pragma once
#include "SpriteBatch.h"
#include "GameState.h"

class Intro
{
public:
    Intro();
    ~Intro();

    void Update(GameState* gameState);
    void Draw(DirectX::SpriteBatch* spriteBatch);

private:

    float _timer = 0.0f;
};

Intro.cpp

#include "Intro.h"
#include "LoadContent.h"
#include "SimpleMath.h"


Intro::Intro()
{
    LoadContent::InitIntro();
    if (!LoadContent::isLoaded("Block"))
        LoadContent::LoadTexture(L"Images/Block.dds", "Block");
}


Intro::~Intro()
{
}

void Intro::Update(GameState* gameState)
{
    if (_timer < 10)
        _timer += 0.1;
    else
        gameState->SwitchState(GameState::ScreenType::MenuScreen);
}

void Intro::Draw(DirectX::SpriteBatch* spriteBatch)
{
    spriteBatch->Draw(LoadContent::GetTexture("Block"), DirectX::SimpleMath::Vector2(170, 196), DirectX::Colors::White);
}

GameState.h

#pragma once
#include "SpriteBatch.h"
#include "Menu.h"
#include "SwitchScreen.h"
#include "Intro.h"

class GameState
{
public:
    GameState();
    ~GameState();

    void Update();
    void Draw(DirectX::SpriteBatch* spriteBatch, DirectX::SpriteFont* spriteFont);

public:

    enum ScreenType{Direct, MenuScreen, Game};

private:

    ScreenType _screenType;
    Intro* _screen;
    Menu* _menu;
    SwitchScreen* _switch;

public:
    void GameState::SwitchState(ScreenType switchtype);

};

GameState.cpp

#pragma once
#include "GameState.h"


GameState::GameState()
{
    _switch = new SwitchScreen();
    _screenType = ScreenType::Direct;
    SwitchState(_screenType);
}


GameState::~GameState()
{
}

void GameState::Update()
{
    _switch->Update();

    switch (_screenType)
    {
    case GameState::Direct:
        _screen->Update(this);
        break;
    case GameState::MenuScreen:
        _menu->Update();
        break;
    case GameState::Game:
        break;
    default:
        break;
    }
}


void GameState::Draw(DirectX::SpriteBatch* spriteBatch, DirectX::SpriteFont* spriteFont)
{
    switch (_screenType)
    {
    case GameState::Direct:
        _screen->Draw(spriteBatch);
        break;
    case GameState::MenuScreen:
        _menu->Draw(spriteBatch, spriteFont);
        break;
    case GameState::Game:
        break;
    default:
        break;
    }
    _switch->Draw(spriteBatch);
}

void GameState::SwitchState(ScreenType switchtype)
{
    if (!_switch->GetUpdate())
    {
        _switch = new SwitchScreen();
    }
    else {
        if (_switch->GetUpdate())
        {
            _screen = NULL;
            _menu = NULL;

            switch (switchtype)
            {
            case GameState::Direct:
                _screen = new Intro();
                break;
            case GameState::MenuScreen:
                _menu = new Menu();
                break;
            case GameState::Game:
                break;
            default:
                break;
            }
            //_switch->SetSwitch(false);
        }
    }
}

错误1错误C2061：语法错误：标识符   'GameState'\ jelly \ intro.h 11

错误2错误C2061：语法错误：标识符   'GameState'\ jelly \ intro.h 11

错误6错误C2061：语法错误：标识符   'GameState'\ jelly \ intro.h 11

错误3错误C2143：语法错误：缺少';'之前   '*'\ jelly \ gamestate.h 23

错误7错误C2660：   '简介::更新'：功能不带1   arguments \ jelly \ gamestate.cpp 24

错误4错误C4430：   缺少类型说明符 - 假设为int。注意：C ++不支持   default-int \ jelly \ gamestate.h 23

警告5警告C4305：'+ ='   ：从'double'截断到   'float'\ jelly \ intro.cpp 21

谢谢

Answer 1

看起来像一个循环包含问题。

您应该尝试在GameState头文件

中声明Intro.h

<强> Intro.h

#include "SpriteBatch.h"
// #include "GameState.h" <<< Nope!
class GameState; // Do this instead

而非在GameState.h中加入Intro.h。

相应地在GameState.h中加入Intro.cpp，以便在那里看到完整的成熟类声明：

<强> Intro.cpp

#include "Intro.h"
#include "LoadContent.h"
#include "SimpleMath.h"
#include "Gamestate.h" // <<<<

Answer 2

1。您在GameState.h中不需要Intro.h。

<强> Intro.h

#pragma once
#include "SpriteBatch.h"
//#include "GameState.h" -> remove this

class GameState; //Add this line - forward declaration is enough to declare a pointer.

2。将GameState.h添加到Intro.cpp。

<强> Intro.cpp

#include "Intro.h"
#include "LoadContent.h"
#include "SimpleMath.h"
#include "GameState.h" //add this

3。您Intro.h中不需要GameState.h。

<强> GameState.h

#pragma once
#include "SpriteBatch.h"
#include "Menu.h"
#include "SwitchScreen.h"
//#include "Intro.h" -> remove this

class Intro; //Add this line - forward declaration is enough to declare a pointer.

4. 。将Intro.h添加到GameState.cpp。

<强> GameState.cpp

#pragma once
#include "GameState.h"
#include "Intro.h" //add this

5. 最大的问题。

在GameState课程中，更改：

public:
  void GameState::SwitchState(ScreenType switchtype);

到

public:
  void SwitchState(ScreenType switchtype);

这就是你的编译器可能在抱怨的事情。

DirectX游戏语法错误

2 个答案: