Question

I have started to make a game in C++ with SDL. My Code is:

main.cpp

#include "SDL/SDL.h"
#include "gameSystem.h"

int main(int argc, char *args[])
{
    gameSystem systemHandler;
    SDL_Surface *buffer;
    SDL_Event event;
    while(event.type != SDL_QUIT)
    {
        SDL_PollEvent(&event);
        SLD_Flip(buffer);
    }
}

gameSystem.cpp

#include "SDL/SDL.h"
#include "gameSystem.h"

gameSystem::gameSystem()
{
    SDL_Init(SDL_INIT_EVERYTHING);
    SDL_WM_SetCaption("GameName", NULL);
    SDL_Surface *buffer;
    bool fullscreen = false;
    if (fullscreen == true)
        {buffer = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE | SDL_FULLSCREEN);}
    else
        {buffer = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);}
}

gameSystem::~gameSystem()
{
    SDL_Quit();
}

gameSystem.h

class gameSystem
{
    public:
        gameSystem();
        ~gameSystem();
    private:
        SDL_Surface *buffer;
};

My linker options include: -lmingw32 -lSDLmain -lSDL -lwinmm -sdl_Mixer

I get the following error: “error: ‘SLD_Flip’ was not declared in this scope” on line 12 of main.cpp.

All the other SDL functions seem to be fine.

Does anyone know how to fix this problem?

Answer 1

You misspelled it. It should be SDL_Flip, not SLD_Flip.

Also, you haven’t initialized your variable buffer in main. You are not setting its value inside of gameSystem::gameSystem(); the variable is out of scope.