我的类 GraphicsManager 出现错误。
图形管理器.cpp：
#include "C:\Users\Chris Uzzolina\Desktop\obj\include\GraphicsManager.h"
#include <SDL.h>
#include <string>
GraphicsManager::GraphicsManager(int SCREEN_WIDTH, int SCREEN_HEIGHT, int SCREEN_BPP, std::string caption, SDL_Surface *screen)
{
}
GraphicsManager::~GraphicsManager()
{
//dtor
}
bool init(int SCREEN_WIDTH, int SCREEN_HEIGHT, int SCREEN_BPP, std::string caption, SDL_Surface *scr)
{
//Initialize all SDL subsystems
if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 )
{
return false;
}
//Set up the screen
scr = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );
//If there was an error in setting up the screen
if( scr == NULL )
{
return false;
}
//Set the window caption
SDL_WM_SetCaption( "Event test", NULL );
//If everything initialized fine
return true;
}
SDL_Surface *load_image( std::string filename )
{
//Temporary storage for the image that's loaded
SDL_Surface* loadedImage = NULL;
//The optimized image that will be used
SDL_Surface* optimizedImage = NULL;
//Load the image
loadedImage = SDL_LoadBMP( filename.c_str() );
//If nothing went wrong in loading the image
if( loadedImage != NULL )
{
//Create an optimized image
optimizedImage = SDL_DisplayFormat( loadedImage );
//Free the old image
SDL_FreeSurface( loadedImage );
}
//Return the optimized image
return optimizedImage;
}
void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination )
{
//Make a temporary rectangle to hold the offsets
SDL_Rect offset;
//Give the offsets to the rectangle
offset.x = x;
offset.y = y;
//Blit the surface
SDL_BlitSurface( source, NULL, destination, &offset );
}
void clean_up(SDL_Surface *image)
{
//Free the image
SDL_FreeSurface( image );
}
void quit_sdl()
{
SDL_Quit();
}
图形管理器.h：
#ifndef GRAPHICSMANAGER_H
#define GRAPHICSMANAGER_H
#include <string>
#include<SDL.h>
class GraphicsManager
{
public:
GraphicsManager();
GraphicsManager(int SCREEN_WIDTH, int SCREEN_HEIGHT, int SCREEN_BPP, std::string caption, SDL_Surface *screen);
virtual ~GraphicsManager();
bool init(int SCREEN_WIDTH, int SCREEN_HEIGHT, int SCREEN_BPP, std::string caption, SDL_Surface *screen );
SDL_Surface *load_image(std::string filename);
void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination );
void clean_up(SDL_Surface *image);
void quit_sdl();
protected:
private:
};
#endif // GRAPHICSMANAGER_H
SDLLesson01.cpp：
#include "SDL/SDL.h"
#include "SDL/SDL_image.h"
#include <string>
#include "C:\Users\Chris Uzzolina\Desktop\obj\include\GraphicsManager.h"
int SCREEN_WIDTH = 640;
int SCREEN_HEIGHT = 480;
int SCREEN_BPP = 32;
SDL_Surface *message = NULL;
SDL_Surface *background = NULL;
SDL_Surface *screen = NULL;
std::string caption = "THProject";
SDL_Event event;
int main( int argc, char* args[] )
{
bool quit=false;
GraphicsManager grmanager();
grmanager.init(SCREEN_WIDTH , SCREEN_HEIGHT , SCREEN_BPP , caption , screen);
message = grmanager.load_image( "riku.bmp" );
background = grmanager.load_image( "abc.bmp" );
grmanager.apply_surface( 0, 0, background, screen );
grmanager.apply_surface( 320, 0, background, screen );
grmanager.apply_surface( 0, 240, background, screen );
grmanager.apply_surface( 320, 240, background, screen );
grmanager.apply_surface( 180, 140, message, screen );
if( SDL_Flip( screen ) == -1 )
{
return 1;
}
while(quit==false)
{
while(SDL_PollEvent(&event))
{
if (event.type== SDL_QUIT)
{
quit=true;
}
}
}
grmanager.clean_up(message);
grmanager.clean_up(background);
grmanager.quit_sdl();
return 0;
}
到目前为止，我已经在这个网站上搜索了多个错误，并且被我最新的错误难住了。如果有人可以对这个问题提供一些见解，将不胜感激。我正在运行 Windows Vista 并Code::Blocks与mingw编译器和SDL库一起使用。这是构建消息：
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp||In function 'int SDL_main(int, char**)':|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|20|error: request for member 'init' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|21|error: request for member 'load_image' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|22|error: request for member 'load_image' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|23|error: request for member 'apply_surface' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|24|error: request for member 'apply_surface' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|25|error: request for member 'apply_surface' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|26|error: request for member 'apply_surface' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|27|error: request for member 'apply_surface' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|42|error: request for member 'clean_up' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|43|error: request for member 'clean_up' in 'grmanager', which is of non-class type 'GraphicsManager()'|
C:\Users\Chris Uzzolina\Desktop\obj\SDLLesson01.cpp|44|error: request for member 'quit_sdl' in 'grmanager', which is of non-class type 'GraphicsManager()'|
||=== Build finished: 11 errors, 0 warnings ===|