The potion hud

public class PotionHud implements IHud
{

    private boolean iconsOnly;
    private HudBox box;
    protected static final ResourceLocation icons = new ResourceLocation("textures/gui/container/inventory.png");

    public PotionHud()
    {
        this.box = new HudBox(0, 0, 100, 25);
        iconsOnly = false;
    }

    @Override
    public void draw()
    {
        // Check whether the inventory is opened, if so, don't render potions
        if (!(RenderHelper.getMC().currentScreen instanceof InventoryEffectRenderer))
        {
            int x = 10;
            int y = 10;
            int yOffGlob = 0;
            // Get all active potion effects
            LinkedList<?> activePotions = new LinkedList<Object>(RenderHelper.getMC().thePlayer.getActivePotionEffects());
            Collections.sort(activePotions, new Comparator<Object>()
            {
                @Override
                public int compare(Object o, Object o2)
                {
                    return ((PotionEffect) o2).getDuration() - ((PotionEffect) o).getDuration();
                }
            });
            // If there are any active effects, render them into the screen
            if (!activePotions.isEmpty())
            {
                GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
                GL11.glDisable(GL11.GL_LIGHTING);
                int yOff = 28;

                if (activePotions.size() > 5)
                {
                    yOff = 132 / (activePotions.size() - 1);
                }

                if (iconsOnly)
                {
                    box.setPosition(10, 10);
                    box.setSize(120, 25);
                    box.draw();
                }

                for (int i = 0; i < activePotions.size(); i++)
                {
                    PotionEffect effect = (PotionEffect) activePotions.toArray()[i];
                    Potion potion = Potion.potionTypes[effect.getPotionID()];
                    GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
                    float alpha = 1F;

                    // Slowly fade out the potion
                    if (effect.getDuration() <= 20)
                    {
                        GL11.glEnable(GL11.GL_BLEND);
                        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
                        alpha = 1F / (21 - effect.getDuration());
                        GL11.glColor4f(1, 1, 1, alpha);
                    }
                    if (!iconsOnly)
                    {
                        if (RenderHelper.getMC().gameSettings.guiScale == 1 && (box.getWidth() == 100 || box.getWidth() == 120))
                        {
                            box.setSize(140, 25);
                            yOffGlob = 1;
                        } else if (box.getWidth() == 140 || box.getWidth() == 120)
                        {
                            box.setSize(100, 25);
                            yOffGlob = 0;
                        }
                        box.setPosition(x, y + yOff * i);
                        box.draw();

                        if (potion.hasStatusIcon())
                        {
                            int icon = potion.getStatusIconIndex();
                            RenderHelper.drawRectangle(icons, x + 5, y + i * yOff + 4, icon % 8 * 18, 198 + icon / 8 * 18, 18, 18, 1);
                        }

                        String name = I18n.format(potion.getName());

                        if (effect.getAmplifier() == 1)
                        {
                            name = name + " II";
                        } else if (effect.getAmplifier() == 2)
                        {
                            name = name + " III";
                        } else if (effect.getAmplifier() == 3)
                        {
                            name = name + " IV";
                        }

                        int alphaColorName = ((int) Math.floor(255 * alpha)) << 24 | 0xFFFFFF;
                        int alphaColorDuration = ((int) Math.floor(255 * alpha)) << 24 | 0xCCCCCC;

                        RenderHelper.drawSmallString(name, x + 7 + 18, y + i * yOff + 4, alphaColorName, true, 1);
                        String duration = Potion.getDurationString(effect);
                        RenderHelper.drawSmallString(duration, x + 7 + 18, y + i * yOff + 4 + 8 + yOffGlob, alphaColorDuration, true, 1);
                    } else
                    {
                        if (potion.hasStatusIcon())
                        {
                            int icon = potion.getStatusIconIndex();
                            RenderHelper.drawRectangle(icons, 15 + i * 19, 14, icon % 8 * 18, 198 + icon / 8 * 18, 18, 18, 1);
                        }
                    }
                }
            }
        }
    }

    public void toggleMode()
    {
        this.iconsOnly = !iconsOnly;
    }
}