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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <iostream>
#include <stdlib.h>
#include "SDL.h"
#include "SDL/SDL_image.h"

using namespace std;

const int SCREENWIDTH = 500;
const int SCREENHEIGHT = 500;
const int SCREENBPP = 32;

SDL_Surface *Box = NULL;
SDL_Surface *Bg = NULL;
SDL_Surface *Screen = NULL;
SDL_Event event;

SDL_Surface *load_image (std::string filename)
{
SDL_Surface *first_act_image = NULL;
SDL_Surface *optimized_image = NULL;
first_act_image = IMG_Load( filename.c_str() );

if (first_act_image != NULL)
{
optimized_image = SDL_DisplayFormat (first_act_image);
SDL_FreeSurface (first_act_image);
}
return optimized_image;
}

void apply_surface (int x, int y, SDL_Surface* source, SDL_Surface* destination)
{
SDL_Rect offset;

offset.x = x;
offset.y = y;

SDL_BlitSurface (source, NULL, destination, &offset);
}

int main (int argc, char* argv [])
{

bool quit = false;

if (SDL_Init(SDL_INIT_EVERYTHING) == -1)
{
return 1;
}

Screen = SDL_SetVideoMode (SCREENWIDTH, SCREENHEIGHT, SCREENBPP, SDL_SWSURFACE);
if(Screen == NULL)
{
return 1;
}

SDL_WM_SetCaption ("HelloSDL", NULL);

Box = load_image ("image.png");
Bg = load_image ("background.png");

apply_surface (0, 0, Bg, Screen);
apply_surface (25, 30, Box, Screen);

if (SDL_Flip (Screen) == -1)
{
return 1;
}

while (quit == false)
{
	while (SDL_PollEvent (&event))
	{
		if (event.type == SDL_QUIT)
		{
			quit = true;
		}
	}
}

SDL_FreeSurface (Box);
SDL_FreeSurface (Bg);

SDL_Quit();

return 0;
}