gistfile1.txt

        
enum Sprites {
    HERO_MOVE,
    HERO_STAND_UP,
    HERO_STAND_DOWN,
}

class Bitmap {}

class Hero {
    private final Loader loader;
    private Sprites state;

    Hero(Loader loader) {
        this.loader = loader;
        state = Sprites.HERO_MOVE;
    }

    void onDraw() {
        final List<Bitmap> sprites = loader.getSprites(state);
        drawSprites(sprites);
    }

    private void drawSprites(List<Bitmap> sprites) {
        // draw logic
    }
}

class Loader {
    Map<Sprites, List<Bitmap>> store = new HashMap<>();

    public Loader() {
        // load all bitmaps
        load();
    }

    public List<Bitmap> getSprites(Sprites key) {
        return store.get(key);
    }

    private void load() {
        store.put(Sprites.HERO_MOVE, createHeroMoveSprites());
    }

    private List<Bitmap> createHeroMoveSprites() {
        List<Bitmap> list = new ArrayList<>();
        list.add(new Bitmap());
        return list;
    }