module platformer;

import derelict.sdl.sdl;
import derelict.sdl.image;

import std.string;
import std.stdio;

static this()
{
    DerelictSDL.load();

    if (SDL_Init(SDL_INIT_EVERYTHING) < 0)
    {
        throw new Exception("Failed to initialize SDL: " ~ getSDLError());
    }
}

static ~this()
{
    SDL_Quit();
}

void main()
{
    SDL_Surface *screen = SDL_SetVideoMode(640, 480, 32, SDL_HWSURFACE | SDL_DOUBLEBUF);
    if (screen is null)
    {
        throw new Exception("Error when setting video mode.");
    }

    const void[] imageData = import("images/background.png");
    SDL_RWops *rwop = SDL_RWFromConstMem(imageData.ptr, imageData.length);

    SDL_Surface *image = IMG_Load_RW(rwop, 0);
    if(image is null)
    {
        throw new Exception("Error when loading image.");
    }

    bool running = true;
    while (running)
    {
        SDL_Event event;
        while(SDL_PollEvent(&event))
        {
            switch(event.type)
            {
                case SDL_QUIT:
                    running = false;
                    break;
             }
        }

        SDL_BlitSurface(image, null, screen, null);
        SDL_Flip(screen);
    }

    SDL_FreeSurface(image);
}

char[] getSDLError()
{
    return toString(SDL_GetError());
}