Someone

        public void LifeCheck(GameServer.PlayerLifeManaChange lifeMana)
        {
            int LifeThreshold = LifeCheck_LifeThreshold;
            int ManaThreshold = LifeCheck_ManaThreshold;
            int DrinkDelay = LifeCheck_DrinkDelay;

            TimeSpan span = new TimeSpan(DateTime.Now.Ticks - this.LastDrink.Ticks);

            if (span.TotalMilliseconds > DrinkDelay && (this.Player.Life <= LifeThreshold || this.Player.Mana <= ManaThreshold))
            {
                // This is what we'll compare each acceptable find to
                Potion bestPotSoFar = new Potion();
                // We'll set this to the best slot we find
                int bestPotSlot = -1;

                // First check for rejuv, then for health pot with highest potency
                for (int i = 0; i < 4; i++)
                {
                    // if this slot isn't empty
                    if (this.Player.Belt[i].Count > 0)
                    {
                        Potion tempPot = (Potion)this.Player.Belt[i].Peek();

                        // Make sure pot being used is for correct threshhold
                        if (tempPot.Type != PotionType.Rejuvination)
                        {
                            // If life is below threshhold, but mana isn't, only drink a health
                            if (this.Player.Life <= LifeThreshold && this.Player.Mana >= ManaThreshold)
                                if (tempPot.Type != PotionType.Health) { continue; }

                            // If mana is below threshhold, but life isn't, only drink a mana
                            if (this.Player.Mana <= ManaThreshold && this.Player.Life >= LifeThreshold)
                                if (tempPot.Type != PotionType.Mana) { continue; }
                        }

                        if (tempPot.Potency > bestPotSoFar.Potency)
                        {
                            bestPotSoFar = tempPot;
                            bestPotSlot = i;
                        }
                    }
                }

                if (bestPotSlot < 0)
                {
                    // Ran out of pots

                    OnDebugOutput(new DebugOutput("No potions left!?"));
                }
                else
                {
                    Action drink = new Action(ActionPriority.High);

                    drink.OnActionExecute += delegate
                    {
                        Potion pot = this.Player.Belt[bestPotSlot].Peek() as Potion;

                        GameClient.UseBeltItem p = new GameClient.UseBeltItem(pot.UID, false);
                        GameClient.UseBeltItem p2 = new GameClient.UseBeltItem(p.PacketData);

                        if (p.ItemUID != p2.ItemUID || p.ToMerc != p2.ToMerc || p.Unknown9 != p2.Unknown9)
                        {
                            throw new Exception("Bad packet building result, drinking potion.");
                        }

                        this.SendPacket(p.PacketData);
                    };

                    OnDebugOutput(new DebugOutput("Enqueued to drink: " + bestPotSlot.ToString()));

                    // Drink this slot
                    this.EnqueuePriority(drink);
                }
            }
        }