public static void OnBuyItem(WorldClient client, INetPacketStream packet)
{
var buyItemPacket = new BuyItemPacket(packet);
var npcShopEvent = new NpcShopBuyEventArgs(buyItemPacket.ItemId, buyItemPacket.Quantity, buyItemPacket.Tab, buyItemPacket.Slot);
client.Player.NotifySystem <NpcShopSystem>(npcShopEvent);
}
/// <summary>
/// Buys an item from the current shop.
/// </summary>
/// <param name="player">Player entity</param>
/// <param name="e"></param>
private void BuyItem(IPlayerEntity player, NpcShopBuyEventArgs e)
{
var npcLoader = DependencyContainer.Instance.Resolve <NpcLoader>();
var npcData = npcLoader.GetNpcData(player.PlayerData.CurrentShopName);
if (npcData == null)
{
Logger.Error($"ShopSystem: Cannot find NPC: {player.PlayerData.CurrentShopName}");
return;
}
if (!npcData.HasShop)
{
Logger.Error($"ShopSystem: NPC {npcData.Name} doesn't have a shop.");
return;
}
var currentTab = npcData.Shop.Items[e.Tab];
if (e.Slot < 0 || e.Slot > currentTab.Count - 1)
{
Logger.Error($"ShopSystem: Item slot index was out of tab bounds. Slot: {e.Slot}");
return;
}
var shopItem = currentTab[e.Slot];
if (shopItem.Id != e.ItemId)
{
Logger.Error($"ShopSystem: Shop item id doens't match the item id that {player.Object.Name} is trying to buy.");
return;
}
if (player.PlayerData.Gold < e.ItemData.Cost)
{
Logger.Info($"ShopSystem: {player.Object.Name} doens't have enough gold to buy item {e.ItemData.Name} at {e.ItemData.Cost}.");
WorldPacketFactory.SendDefinedText(player, DefineText.TID_GAME_LACKMONEY);
return;
}
int quantity = e.Quantity;
int cost = e.ItemData.Cost;
if (e.ItemData.IsStackable)
{
for (var i = 0; i < InventorySystem.EquipOffset; i++)
{
Item inventoryItem = player.Inventory.Items[i];
if (inventoryItem.Id == e.ItemId)
{
if (inventoryItem.Quantity + quantity > e.ItemData.PackMax)
{
int boughtQuantity = inventoryItem.Data.PackMax - inventoryItem.Quantity;
quantity -= boughtQuantity;
inventoryItem.Quantity = inventoryItem.Data.PackMax;
player.PlayerData.Gold -= cost * boughtQuantity;
}
else
{
inventoryItem.Quantity += quantity;
player.PlayerData.Gold -= cost * quantity;
quantity = 0;
}
WorldPacketFactory.SendUpdateAttributes(player, DefineAttributes.GOLD, player.PlayerData.Gold);
WorldPacketFactory.SendItemUpdate(player, UpdateItemType.UI_NUM, inventoryItem.UniqueId, inventoryItem.Quantity);
}
}
if (quantity > 0)
{
if (!player.Inventory.HasAvailableSlots())
{
WorldPacketFactory.SendDefinedText(player, DefineText.TID_GAME_LACKSPACE);
}
else
{
var item = new Item(e.ItemId, quantity, -1);
if (player.Inventory.CreateItem(item))
{
player.PlayerData.Gold -= cost;
WorldPacketFactory.SendItemCreation(player, item);
WorldPacketFactory.SendUpdateAttributes(player, DefineAttributes.GOLD, player.PlayerData.Gold);
}
else
{
Logger.Error("ShopSystem: Failed to create item.");
}
}
}
}
else
{
while (quantity > 0)
{
if (!player.Inventory.HasAvailableSlots())
{
WorldPacketFactory.SendDefinedText(player, DefineText.TID_GAME_LACKSPACE);
break;
}
var item = new Item(e.ItemId, 1, -1);
if (player.Inventory.CreateItem(item))
{
player.PlayerData.Gold -= cost;
WorldPacketFactory.SendItemCreation(player, item);
WorldPacketFactory.SendUpdateAttributes(player, DefineAttributes.GOLD, player.PlayerData.Gold);
}
else
{
Logger.Error("ShopSystem: Failed to create item.");
}
quantity--;
}
}
}
