@Override
  public void update() {
    super.update();

    float health = (float) Dungeon.hero.HP / Dungeon.hero.HT;

    if (health == 0) {
      avatar.tint(0x000000, 0.6f);
      blood.on = false;
    } else if (health < 0.25f) {
      avatar.tint(0xcc0000, 0.4f);
      blood.on = true;
    } else {
      avatar.resetColor();
      blood.on = false;
    }

    hp.scale.x = health;
    exp.scale.x = (width / exp.width) * Dungeon.hero.exp / Dungeon.hero.maxExp();

    if (Dungeon.hero.lvl != lastLvl) {

      if (lastLvl != -1) {
        Emitter emitter = (Emitter) recycle(Emitter.class);
        emitter.revive();
        emitter.pos(27, 27);
        emitter.burst(Speck.factory(Speck.STAR), 12);
      }

      lastLvl = Dungeon.hero.lvl;
      level.text(Integer.toString(lastLvl));
      level.measure();
      level.x = PixelScene.align(27.0f - level.width() / 2);
      level.y = PixelScene.align(27.5f - level.baseLine() / 2);
    }

    int k = IronKey.curDepthQuantity;
    if (k != lastKeys) {
      lastKeys = k;
      keys.text(Integer.toString(lastKeys));
      keys.measure();
      keys.x = width - 8 - keys.width() - 18;
    }

    int tier = Dungeon.hero.tier();
    if (tier != lastTier) {
      lastTier = tier;
      avatar.copy(HeroSprite.avatar(Dungeon.hero.heroClass, tier));
    }
  }
 @Override
 protected void onTouchUp() {
   image.resetColor();
 }