NPCs + Backpacks (Solved)

[LucasFerraz]

Hello,
When I select 'buy with backpack' do not have effect.
How can I solve it without changing my modules.lua?

modules.lua

	-- Callback onBuy() function. If you wish, you can change certain Npc to use your onBuy().
	function ShopModule:callbackOnBuy(cid, itemid, subType, amount, ignoreCap, inBackpacks)
		local shopItem = nil
		for _, item in ipairs(self.npcHandler.shopItems) do
			if(item.id == itemid and item.subType == subType) then
				shopItem = item
				break
			end
		end

		if(shopItem == nil) then

			return false
		end

		if(shopItem.buy == -1) then
			print('[Warning - ' .. getCreatureName(getNpcId()) .. '] NpcSystem:', 'ShopModule.onBuy - Attempt to purchase an item which only sellable')
			return false
		end

		if(amount <= 0) then
			print('[Warning - ' .. getCreatureName(getNpcId()) .. '] NpcSystem:', 'ShopModule.onBuy - Attempt to purchase ' .. amount .. ' items')
			return false
		end

		local backpack, totalCost = 1988, amount * shopItem.buy
		if(inBackpacks) then
			totalCost = totalCost + (math.max(1, math.floor(amount / getContainerCapById(backpack))) * 20)
		end

		local parseInfo = {
			[TAG_PLAYERNAME] = getPlayerName(cid),
			[TAG_ITEMCOUNT] = amount,
			[TAG_TOTALCOST] = totalCost,
			[TAG_ITEMNAME] = shopItem.name
		}

		if(getPlayerMoney(cid) < totalCost) then
			local msg = self.npcHandler:getMessage(MESSAGE_NEEDMONEY)
			doPlayerSendCancel(cid, self.npcHandler:parseMessage(msg, parseInfo))
			return false
		end

		local subType = shopItem.subType or 1
		local a, b = doNpcSellItem(cid, itemid, amount, subType, ignoreCap, inBackpacks, backpack)
		if(a < amount) then
			local msgId = MESSAGE_NEEDMORESPACE
			if(a == 0) then
				msgId = MESSAGE_NEEDSPACE
			end

			local msg = self.npcHandler:getMessage(msgId)
			parseInfo[TAG_ITEMCOUNT] = a

			doPlayerSendCancel(cid, self.npcHandler:parseMessage(msg, parseInfo))
			if(NPCHANDLER_CONVBEHAVIOR ~= CONVERSATION_DEFAULT) then
				self.npcHandler.talkStart[cid] = os.time()
			else
				self.npcHandler.talkStart = os.time()
			end

			if(a > 0) then
				doPlayerRemoveMoney(cid, ((a * shopItem.buy) + (b * 20)))
				return true
			end

			return false
		end

		local msg = self.npcHandler:getMessage(MESSAGE_BOUGHT)
		doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, self.npcHandler:parseMessage(msg, parseInfo))

		doPlayerRemoveMoney(cid, totalCost)
		if(NPCHANDLER_CONVBEHAVIOR ~= CONVERSATION_DEFAULT) then
			self.npcHandler.talkStart[cid] = os.time()
		else
			self.npcHandler.talkStart = os.time()
		end

		return true
	end

 

[LucasFerraz]

bump

 

[LucasFerraz]

bump

 

[LucasFerraz]

bump

 

[LucasFerraz]

bump

 

[LucasFerraz]

bump

 

[LucasFerraz]

bump

 

[Cykotitan]

for all items or only stackable items?

 

[LucasFerraz]

Only stackable items :<

 

[Cykotitan]

in npc.lua, replace:

	if(isItemStackable(itemid)) then
		if(isItemRune(itemid)) then
			amount = amount * subType
		end

		local count = amount
		repeat
			item = doCreateItemEx(itemid, math.min(100, count))
			if(doPlayerAddItemEx(cid, item, ignoreCap) ~= RETURNVALUE_NOERROR) then
				return 0, 0
			end

			count = count - math.min(100, count)
		until count == 0
		return amount, 0
	end

with:

	if isItemStackable(itemid) then
		local k
		if(inBackpacks) then
			k = doCreateItemEx(backpack)
			doAddContainerItem(k, itemid, amount)
		else
			k = doCreateItemEx(itemid, amount)
		end
		return doPlayerAddItemEx(cid, k, ignoreCap) ~= RETURNVALUE_NOERROR and 0 or amount, 0
	end

 

[LucasFerraz]

Thanks cyko

 

[Ceejzor]

Thanks Cyko~