//The headers
#include "SDL/SDL.h"
#include "SDL/SDL_image.h"
#include <string>

//Screen attributes
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
const int SCREEN_BPP = 32;

//The surfaces
SDL_Surface *image = NULL;
SDL_Surface *screen = NULL;

//The event structure that will be used
SDL_Event event;

SDL_Surface *load_image(std::string filename)
{
//The image that's loaded
SDL_Surface* loadedImage = NULL;
//The optimized image that will be used
SDL_Surface* optimizedImage = NULL;
//Load the image
loadedImage = IMG_Load(filename.c_str());
//If the image loaded
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)
{
//Temporary rectangle to hold the offsets
SDL_Rect offset;

//Get the offsets
offset.x = x;
offset.y = y;
//Blit the surface
SDL_BlitSurface(source, NULL, destination, &offset);
}

bool init()
{
//Initialize all SDL subsystems
if(SDL_Init(SDL_INIT_EVERYTHING) == -1);
{
return false;
}

//Set up the screen
screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE);
//If there was an error in setting up the screen
if(screen == NULL)
{
return false;
}

//Set the window caption
SDL_WM_SetCaption("Event test", NULL);

//If everythign initialized fine
return true;
}

bool load_files()
{
//Load the image
image = load_image("x.png");
//If there was an error in loading the image
if(image == NULL)
{
return false;
}
//if everything loads fine
return true;
}

void clean_up()
{
//free the image
SDL_FreeSurface(image);
//quit SDL
SDL_Quit();
}

int main(int argc, char* args[])
{
//Make sure the program waits for a quit
bool quit = false;
//initialize
if(init() == false)
{
return 1;
}
//Load the files
if(load_files() == false)
{
return 1;
}

//Apply the surface to the screen
apply_surface(0, 0, image, screen);

//update the screen
if(SDL_Flip(screen) == -1)
{
return 1;
}

//While the user hasn't quit
while(quit == false)
{
while(SDL_PollEvent(&event))
{
//if the user has Xed out the window
if(event.type == SDL_QUIT)
{
//Quit the program
quit = true;
}
}
}
//free the surface and quit SDL
clean_up();
return 0;
}