public BaseItem TakeItemAmountFromSlot(byte inventory, short slot, short amount, bool takeStars)
{
var item = GetItem(inventory, slot);
if (item == null)
{
return(null);
}
if (!takeStars)
{
if (item.Amount - amount < 0)
{
return(null);
}
}
bool removeItem = false;
BaseItem newItem;
if (takeStars && Constants.isStar(item.ItemID))
{
// Take the whole item
newItem = item;
removeItem = true;
}
else
{
newItem = item.SplitInTwo(amount);
removeItem = item.Amount == 0 && Constants.isStar(item.ItemID) == false;
}
if (removeItem)
{
SetItem(inventory, slot, null);
TryRemoveCashItem(item);
InventoryPacket.SwitchSlots(Character, slot, 0, inventory);
}
else
{
// Update item
InventoryPacket.AddItem(Character, inventory, item, false);
}
return(newItem);
}
/// <summary>
/// Try to remove <paramref name="amount"/> amount of itemid <paramref name="itemid"/>.
/// Does not 'remove' stacks, keeps them as-is (with 0 items).
/// </summary>
/// <param name="itemid">The Item ID</param>
/// <param name="amount">Amount</param>
/// <returns>Amount of items that were _not_ taken away</returns>
public int TakeItem(int itemid, int amount)
{
if (amount == 0)
{
return(0);
}
int initialAmount = amount;
var isRechargeable = Constants.isRechargeable(itemid);
byte inventory = Constants.getInventory(itemid);
for (short i = 1; i <= MaxSlots[inventory - 1]; i++)
{
BaseItem item = GetItem(inventory, i);
if (item == null || item.ItemID != itemid)
{
continue;
}
var maxRemove = Math.Min(item.Amount, amount);
item.Amount -= (short)maxRemove;
if (item.Amount == 0 && !isRechargeable)
{
// Your item. Gone.
SetItem(inventory, i, null);
TryRemoveCashItem(item);
InventoryPacket.SwitchSlots(Character, i, 0, inventory);
}
else
{
// Update item with new amount
InventoryPacket.AddItem(Character, inventory, item, false);
}
amount -= maxRemove;
}
return(initialAmount - amount);
}
public static void HandleNPCShop(Character chr, Packet packet)
{
if (chr.ShopNPCID == 0)
{
return;
}
var shopInfo = DataProvider.NPCs[chr.ShopNPCID].Shop;
var transferId = "" + chr.ID + "-" + chr.ShopNPCID + "-" + RNG.Range.generate(0, long.MaxValue).ToString();
byte type = packet.ReadByte();
switch ((ShopReq)type)
{
case ShopReq.Buy:
{
short slot = packet.ReadShort();
int itemid = packet.ReadInt();
short amount = packet.ReadShort();
if (amount < 1 ||
(Constants.isEquip(itemid) && amount != 1))
{
Program.MainForm.LogAppend("Disconnecting player: trying to buy a negative amount of items OR multiple equips. " + packet);
chr.Player.Socket.Disconnect();
return;
}
if (slot < 0 || slot >= shopInfo.Count)
{
SendShopResult(chr, ShopRes.BuyUnknown);
return;
}
ShopItemData sid = shopInfo[slot];
int costs = amount * sid.Price;
if (false && sid.Stock == 0)
{
SendShopResult(chr, ShopRes.BuyNoStock);
return;
}
if (sid.ID != itemid)
{
SendShopResult(chr, ShopRes.BuyUnknown);
return;
}
if (costs > chr.Inventory.Mesos)
{
SendShopResult(chr, ShopRes.BuyNoMoney);
return;
}
if (Constants.isRechargeable(itemid))
{
costs = amount * sid.Price;
if (amount > DataProvider.Items[itemid].MaxSlot) // You can't but multiple sets at once
{
SendShopResult(chr, ShopRes.BuyUnknown);
return;
}
}
if (!chr.Inventory.HasSlotsFreeForItem(itemid, amount, true))
{
SendShopResult(chr, ShopRes.BuyUnknown);
return;
}
Common.Tracking.MesosTransfer.PlayerBuysFromShop(chr.ID, chr.ShopNPCID, costs,
transferId);
Common.Tracking.ItemTransfer.PlayerBuysFromShop(chr.ID, chr.ShopNPCID, itemid, amount,
transferId, null);
chr.Inventory.AddNewItem(itemid, amount);
SendShopResult(chr, ShopRes.BuySuccess);
sid.Stock -= amount;
chr.AddMesos(-costs);
break;
}
case ShopReq.Sell:
{
short itemslot = packet.ReadShort();
int itemid = packet.ReadInt();
short amount = packet.ReadShort();
byte inv = Constants.getInventory(itemid);
BaseItem item = chr.Inventory.GetItem(inv, itemslot);
if (item == null ||
item.ItemID != itemid ||
amount < 1 ||
// Do not trigger this when selling stars and such.
(!Constants.isRechargeable(itemid) && amount > item.Amount) ||
(Constants.isEquip(itemid)
? DataProvider.Equips.ContainsKey(itemid) == false
: DataProvider.Items.ContainsKey(itemid) == false) ||
item.CashId != 0)
{
Program.MainForm.LogAppend("Disconnecting player: invalid trade packet: " + packet);
chr.Player.Socket.Disconnect();
return;
}
int sellPrice = 0;
if (Constants.isEquip(itemid))
{
var ed = DataProvider.Equips[itemid];
sellPrice = ed.Price;
}
else
{
var id = DataProvider.Items[itemid];
sellPrice = id.Price * amount;
}
if (sellPrice < 0)
{
SendShopResult(chr, ShopRes.SellIncorrectRequest);
return;
}
// Change amount here (rechargeables are sold as 1)
if (Constants.isRechargeable(item.ItemID))
{
amount = item.Amount;
}
Common.Tracking.MesosTransfer.PlayerSellsToShop(chr.ID, chr.ShopNPCID, sellPrice, transferId);
Common.Tracking.ItemTransfer.PlayerSellsToShop(chr.ID, chr.ShopNPCID, item.ItemID, amount, transferId, item);
if (amount == item.Amount)
{
chr.Inventory.SetItem(inv, itemslot, null);
chr.Inventory.TryRemoveCashItem(item);
InventoryPacket.SwitchSlots(chr, itemslot, 0, inv);
}
else
{
item.Amount -= amount;
InventoryPacket.AddItem(chr, inv, item, false);
}
chr.AddMesos(sellPrice);
SendShopResult(chr, ShopRes.SellSuccess);
break;
}
case ShopReq.Recharge:
{
short itemslot = packet.ReadShort();
byte inv = 2;
BaseItem item = chr.Inventory.GetItem(inv, itemslot);
if (item == null ||
!Constants.isRechargeable(item.ItemID))
{
Program.MainForm.LogAppend("Disconnecting player: invalid trade packet: " + packet);
chr.Player.Socket.Disconnect();
return;
}
ShopItemData sid = shopInfo.FirstOrDefault((a) => a.ID == item.ItemID);
if (sid == null)
{
Program.MainForm.LogAppend("Disconnecting player: Item not found in shop; not rechargeable?");
chr.Player.Socket.Disconnect();
return;
}
if (sid.UnitRechargeRate <= 0.0)
{
SendShopResult(chr, ShopRes.RechargeIncorrectRequest);
return;
}
ItemData data = DataProvider.Items[item.ItemID];
short maxslot = (short)(data.MaxSlot + chr.Skills.GetRechargeableBonus());
short toFill = (short)(maxslot - item.Amount);
int sellPrice = (int)Math.Ceiling(-1.0 * sid.UnitRechargeRate * toFill);
sellPrice = Math.Max(sellPrice, 1);
if (chr.Inventory.Mesos > -sellPrice)
{
Common.Tracking.MesosTransfer.PlayerBuysFromShop(chr.ID, chr.ShopNPCID, -sellPrice,
transferId);
Common.Tracking.ItemTransfer.PlayerBuysFromShop(chr.ID, chr.ShopNPCID, item.ItemID,
(short)(maxslot - item.Amount), transferId, item);
item.Amount = maxslot;
chr.AddMesos(sellPrice);
InventoryPacket.AddItem(chr, inv, item, false);
SendShopResult(chr, ShopRes.RechargeSuccess);
}
else
{
SendShopResult(chr, ShopRes.RechargeNoMoney); // no muney? hier! suk a kok!
}
break;
}
case ShopReq.Close: chr.ShopNPCID = 0; chr.NpcSession = null; break;
default:
{
Program.MainForm.LogAppend("Unknown NPC shop action: " + packet);
break;
}
}
}