Zepheus.Zone.Game.ZoneCharacter.GiveItem C# (CSharp) Method

        public InventoryStatus GiveItem(ushort id, byte amount = 1)
        {
            ItemInfo info;
            if (DataProvider.Instance.ItemsByID.TryGetValue(id, out info))
            {
                if (info.Slot == FiestaLib.ItemSlot.Normal)
                {
                    foreach (var i in InventoryItems.Values)
                    {
                        if (i.ItemID == id && i.Amount < i.Info.MaxLot)
                        {
                            // We found the same item and it can stack more!
                            byte left = (byte)(i.Info.MaxLot - i.Amount);
                            if (left > amount)
                            {
                                i.Amount += left;
                                amount -= left;
                            }
                            else
                            {
                                i.Amount += amount;
                                amount = 0;
                            }
                            Handler12.ModifyInventorySlot(this, 0x24, (byte)i.Slot, (byte)i.Slot, i);
                            if (amount == 0)
                            {
                                break;
                            }
                        }
                    }
                    // If we have still some stuff left, go ahead and create new stacks!
                    if (amount > 0)
                    {
                        while (amount > 0)
                        {
                            sbyte invslot;
                            if (GetFreeInventorySlot(out invslot))
                            {
                                DatabaseItem item = new DatabaseItem();
                                item.Amount = amount;
                                item.Character = character;
                                item.ObjectID = info.ItemID;
                                item.Slot = invslot;
                                Program.Entity.AddToDatabaseItems(item);
                                Item nitem = new Item(item);
                                InventoryItems.Add(invslot, nitem);
                                Handler12.ModifyInventorySlot(this, 0x24, (byte)invslot, (byte)invslot, nitem);
                                amount -= info.MaxLot;
                            }
                            else return InventoryStatus.FULL;
                        }
                    }
                    Save();
                    return InventoryStatus.ADDED;
                }
                else
                {
                    sbyte invslot;
                    if (GetFreeInventorySlot(out invslot))
                    {
                        DatabaseEquip equip = new DatabaseEquip();
                        equip.Character = character;
                        equip.EquipID = info.ItemID;
                        equip.Slot = invslot;
                        Program.Entity.AddToDatabaseEquips(equip);
                        Equip nequip = new Equip(equip);
                        InventoryItems.Add(invslot, nequip);
                        Save();
                        Handler12.ModifyInventorySlot(this, 0x24, (byte)invslot, (byte)invslot, nequip);
                        return InventoryStatus.ADDED;
                    }
                    else return InventoryStatus.FULL;
                }
            }
            else return InventoryStatus.NOT_FOUND;
        }

        private void ItemCommand(ZoneCharacter character, params string[] param)
        {
            ushort id = ushort.Parse(param[1]);
            byte amount = 1;
            if (param.Length > 2)
            {
                amount = byte.Parse(param[2]);
            }

            switch (character.GiveItem(id, amount))
            {
                case FiestaLib.InventoryStatus.FULL:
                    Handler12.InventoryFull(character);
                    return;
                case FiestaLib.InventoryStatus.NOT_FOUND:
                    character.DropMessage("Item not found.");
                    return;
            }
        }