#include <SDL/SDL.h>
#include <string>

using namespace std;

// screen attributes
const int SCREEN_WIDTH = 600;
const int SCREEN_HEIGHT = 600;
const int SCREEN_BPP = 32;

// images
SDL_Surface * tLeft = 0;
SDL_Surface * bLeft = 0;
SDL_Surface * bRight = 0;
SDL_Surface * tRight = 0;
SDL_Surface * screen = 0;
SDL_Surface * backGround = 0;

SDL_Surface * loadImage( string fileName )
{
    // temp + optimized images
    SDL_Surface * loadedImage = 0;
    SDL_Surface * optImage = 0;
    
    // loads image
    loadedImage = SDL_LoadBMP( fileName.c_str() );
    
    // if image loads fine
    if( loadedImage != NULL )
    {
        optImage = SDL_DisplayFormat( loadedImage );
        
        // frees old image
        SDL_FreeSurface( loadedImage );
    }
    
    return optImage;
}

void applyImage( int x, int y, SDL_Surface * pic, SDL_Surface * dest )
{
    SDL_Rect offSet;
    
    // sets the offSet x/y
    offSet.x = x;
    offSet.y = y;
    
    SDL_BlitSurface( pic, NULL, dest, &offSet );
}

int main( int argc, char* args[] )
{
    // initializes SDL
    if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 )
    {
        return 1;
    }
    
    // loads all the images
    backGround = loadImage( "background.bmp" );
    tLeft = loadImage( "top_left.bmp" );
    tRight = loadImage( "top_right.bmp" );
    bLeft = loadImage( "bottom_left.bmp" );
    bRight = loadImage( "bottom_right.bmp" );
    
    // loads images to screen
    applyImage( 0, 0, backGround, screen );
    applyImage( 0, 0, tLeft, screen );
    applyImage( 0, 500, bLeft, screen );
    applyImage( 500, 0, tRight, screen );
    applyImage( 500, 500, bRight, screen );
    
    screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );
    
    // if screen isnt set up
    if( screen == NULL )
    {
        return 1;
    }
    
    SDL_WM_SetCaption( "The Eye of All Things Holy!", NULL );
    
    if( SDL_Flip( screen ) == -1 )
    {
        return 1;
    }
    
    SDL_Delay( 3000 );
    
    // free all the images
    SDL_FreeSurface( tLeft );
    SDL_FreeSurface( tRight );
    SDL_FreeSurface( bLeft );
    SDL_FreeSurface( bRight );
    
    SDL_Quit();
    
    return 0;
}