RAGE:MP C# Tutorials - 22 -> 23

gistfile1.txt

[Command("inventory")]
        public void CMD_Inventory(Client client)
        {
            PlayerStats pStats = PlayerHelper.GetPlayerStats(client);

            if (pStats == null)
                return;

            List<Item> items = pStats.GetItems();

            if (items.Count == 0)
            {
                client.SendChatMessage("You don't have any items.");
                return;
            }

            foreach(Item item in items)
            {
                client.SendChatMessage($"{item.Name}: {item.Quantity}");
            }
        }

        [Command("additem")]
        public void CMD_AddItem(Client client, string item_name, double quantity)
        {
            PlayerStats pStats = PlayerHelper.GetPlayerStats(client);

            if (pStats == null)
                return;

            Item item = new Item();
            item.Name = item_name;
            item.Quantity = quantity;


            pStats.AddItem(item);

            Database.Update(pStats);

            client.SendChatMessage("Added a new item.");
        }

        [Command("useitem")]
        public void CMD_UseItem(Client client, string item_name)
        {
            PlayerStats pStats = PlayerHelper.GetPlayerStats(client);

            if (pStats == null)
                return;

            Item item = new Item();
            item.Name = item_name;
            item.Quantity = 1;

            bool result = pStats.RemoveItem(item);

            if (!result)
            {
                client.SendChatMessage("That item does not exist!");
                return;
            }

            Database.Update(pStats);
            client.SendChatMessage($"You used {item_name}");
        }




public void AddItem(Item item)
        {
            int count = 0;
            bool found_item = false;
            string serialized_item = "";

            foreach(string json_item in items)
            {
                Item des_item = NAPI.Util.FromJson<Item>(json_item);

                if (des_item.Name.ToLower() == item.Name.ToLower())
                {
                    des_item.Quantity += item.Quantity;
                    serialized_item = NAPI.Util.ToJson(des_item);
                    found_item = true;
                    break;
                }

                count++;
            }

            if (found_item)
            {
                items[count] = serialized_item;
                return;
            }

            items.Add(NAPI.Util.ToJson(item));
        }

        public bool RemoveItem(Item item)
        {
            int count = 0;
            Tuple<bool, bool> found_and_quantity = new Tuple<bool, bool>(false, false);
            string serialized_item = "";

            foreach (string json_item in items)
            {
                Item des_item = NAPI.Util.FromJson<Item>(json_item);

                if (des_item.Name.ToLower() == item.Name.ToLower())
                {
                    if (des_item.Quantity < item.Quantity)
                        break;

                    des_item.Quantity -= item.Quantity;
                    serialized_item = NAPI.Util.ToJson(des_item);
                    
                    if (des_item.Quantity <= 0)
                    {
                        found_and_quantity = new Tuple<bool, bool>(true, false); // Found Item, Don't Re-insert
                    } else
                    {
                        found_and_quantity = new Tuple<bool, bool>(true, true); // Found Item, Re-insert
                    }
                    break;
                }

                count++;
            }

            if (!found_and_quantity.Item1)
                return false;
            
            if (found_and_quantity.Item2)
            {
                items[count] = serialized_item;
                return true;
            }

            items.RemoveAt(count);
            return true;
        }

        public List<Item> GetItems()
        {
            List<Item> des_items = new List<Item>();

            foreach(string json_item in items)
            {
                des_items.Add(NAPI.Util.FromJson<Item>(json_item));
            }

            return des_items;
        }