void Game_Window::screenshot(){
    //Determine the date and time.
    time_t now;
    struct tm *tm_now;
    char buff[BUFSIZ];
    now=time(NULL);
    tm_now=localtime(&now);

    //Store the date and time in buff.
    strftime(buff,sizeof buff,"%Y-%m-%d_%H.%M.%S",tm_now);

    string date=buff;

    string screenshot_name=engine_interface.get_home_directory()+"screenshots/";
    screenshot_name+=date;
    screenshot_name+=".png";

    unsigned char pixel_data[4*REAL_SCREEN_WIDTH*REAL_SCREEN_HEIGHT];

    if(SDL_RenderReadPixels(renderer,NULL,SDL_PIXELFORMAT_ABGR8888,pixel_data,REAL_SCREEN_WIDTH*4)!=0){
        string msg="Error reading renderer pixels: ";
        msg+=SDL_GetError();
        message_log.update_error_log(msg);
    }

    uint32_t rmask,gmask,bmask,amask;
    engine_interface.get_rgba_masks(&rmask,&gmask,&bmask,&amask);

    SDL_Surface* surface=SDL_CreateRGBSurfaceFrom(pixel_data,REAL_SCREEN_WIDTH,REAL_SCREEN_HEIGHT,32,REAL_SCREEN_WIDTH*4,rmask,gmask,bmask,amask);

    if(surface==0){
        string msg="Error creating surface for screenshot: ";
        msg+=SDL_GetError();
        message_log.update_error_log(msg);
    }

    IMG_SavePNG(surface,screenshot_name.c_str());

    SDL_FreeSurface(surface);
}