Elysian Shadows

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#include "SDL.h"
#include "SDL_image.h"
#include <string>

#include <iostream>
using namespace std;

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

//The surfaces that will be used 
SDL_Surface *image = NULL; 
SDL_Surface *screen = NULL;
SDL_Event event;

SDL_Surface *load_image(std::string filename)
{
	SDL_Surface *loadedImage = NULL;
	SDL_Surface *optimizedImage = NULL;

	loadedImage = IMG_Load(filename.c_str());

	if(loadedImage != NULL)
	{
		optimizedImage = SDL_DisplayFormat(loadedImage);
		SDL_FreeSurface(loadedImage);
	}

	return optimizedImage;
}

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);
}

bool init()
{
	if(SDL_Init(SDL_INIT_EVERYTHING) == -1)
	{
	  cout << "init" << endl;
		return false;
	}

	screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE | SDL_DOUBLEBUF);
	
	if(screen == NULL)
	{
	  cout << "videomode" << endl;
		return false;
	}

	SDL_WM_SetCaption("Hello world", NULL);
	return true;
}

bool load_files()
{
	image = load_image("x.png");

	if(image == NULL)
	{
	  cout << "image" << endl;
		return false;
	}

	return true;
}

void clean_up()
{
	SDL_FreeSurface(image);
	SDL_Quit();
}

int main( int argc, char* args[] ) 
{
	bool quit = false;

	if(init() == false)
	{
		return 1;
	}

	if(load_files() == false)
	{
		return 1;
	}

	apply_surface(0, 0, image, screen);

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

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

	clean_up();

	return 0;
}