Lua Advanced functions in Jiddo's npcs

[Vanitas]

Here I've seen that I can create greetCallback which will do something when something.

npcHandler:setCallback(CALLBACK_GREET, greetCallback)

Is there any way to create custom callbacks or I can only use callbacks from Jiddo's system?
Can I create something like CALLBACK_TRADE to do something when player wants to trade?

 

[Cykotitan]

NPC: (final version) rashid godly script! - OpenTibia Fans
Check out rashid.zip

 

[Vanitas]

That's great. Thanks!
But... What if I want do create two trade lists and use only one depended(? my English ;p) on level?

I don't know if it's correct:

local CONST_RASHID_STORAGE_KEY = 1234
local CONST_RASHID_STORAGE_VALUE = 2

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)

function onCreatureAppear(cid)			npcHandler:onCreatureAppear(cid)			end
function onCreatureDisappear(cid)		npcHandler:onCreatureDisappear(cid)			end
function onCreatureSay(cid, type, msg)		npcHandler:onCreatureSay(cid, type, msg)		end
function onThink()				npcHandler:onThink()					end

local shopModule = ShopModule:new()
npcHandler:addModule(shopModule)

function onTradeRequest(cid)
	if getPlayerStorageValue(cid, CONST_RASHID_STORAGE_KEY) == CONST_RASHID_STORAGE_VALUE then
		shopModule:addBuyableItem({'spellbook'}, 2175, 100, 'spellbook')
		shopModule:addBuyableItem({'magic lightwand'}, 2163, 300, 'magic lightwand')
	else
		shopModule:addBuyableItem({'spellbook'}, 2175, 150, 'spellbook')
		shopModule:addBuyableItem({'magic lightwand'}, 2163, 400, 'magic lightwand')
	end
	return TRUE
end

 

[Vanitas]

Bring
Up
My
Post

 

[Cykotitan]

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)

function customCallbackOnBuy(cid, itemid, subType, amount, ignoreCap, inBackpacks, shopWindow)
	local shopItem, npcHandler = nil, NpcHandler
	for _, item in ipairs(shopWindow) do
		if not item.subType then
			item.subType = (isItemFluidContainer(item.id) == TRUE or isItemStackable(item.id) == TRUE) and 0 or 1
		end
		if(item.id == itemid and (item.subType == subType)) then
			shopItem = item
			break
		end
	end

	if(shopItem == nil) then
		error("[ShopModule.onBuy]", "Item not found on shopItems list")
		return false
	end

	if(shopItem.buy < 0) then
		error("[ShopModule.onSell]", "Attempt to purchase an item which is only sellable")
		return false
	end

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

	if(getPlayerMoney(cid) < totalCost) then
		doPlayerSendCancel(cid, npcHandler:parseMessage(npcHandler:getMessage(MESSAGE_NEEDMONEY), {[TAG_PLAYERNAME] = getPlayerName(cid), [TAG_ITEMCOUNT] = amount, [TAG_TOTALCOST] = totalCost, [TAG_ITEMNAME] = shopItem.name}))
		return false
	end

	local subType = shopItem.subType or isItemFluidContainer(itemid) == TRUE and 0 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

		doPlayerSendCancel(cid, npcHandler:parseMessage(npcHandler:getMessage(msgId), {[TAG_PLAYERNAME] = getPlayerName(cid), [TAG_ITEMCOUNT] = amount, [TAG_TOTALCOST] = totalCost, [TAG_ITEMNAME] = shopItem.name, [TAG_ITEMCOUNT] = a}))

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

		return false
	end
	doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, npcHandler:parseMessage(npcHandler:getMessage(MESSAGE_BOUGHT), {[TAG_PLAYERNAME] = getPlayerName(cid), [TAG_ITEMCOUNT] = amount, [TAG_TOTALCOST] = totalCost, [TAG_ITEMNAME] = shopItem.name}))
	doPlayerRemoveMoney(cid, totalCost)

	return true
end

function customCallbackOnSell(cid, itemid, subType, amount, ignoreCap, inBackpacks, shopWindow)
	local shopItem, npcHandler, subType = nil, NpcHandler, subType or 0
	for _, item in ipairs(shopWindow) do
		item.subType = not item.subType and 0 or item.subType
		if(item.id == itemid and (isItemFluidContainer(itemid) == FALSE or isItemFluidContainer(itemid) == TRUE and item.subType == subType)) then
			shopItem = item
			break
		end
	end

	if(shopItem == nil) then
		error("[ShopModule.onBuy]", "Item not found on shopItems list")
		return false
	end

	if(shopItem.sell < 0) then
		error("[ShopModule.onSell]", "Attempt to sell an item which is only buyable")
		return false
	end

	if(doPlayerRemoveItem(cid, itemid, amount, isItemFluidContainer(itemid) == TRUE and subType or isItemStackable(itemid) == TRUE and amount or 1) == TRUE) then
		doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, npcHandler:parseMessage(npcHandler:getMessage(MESSAGE_SOLD), {[TAG_PLAYERNAME] = getPlayerName(cid), [TAG_ITEMCOUNT] = amount, [TAG_TOTALCOST] = amount * shopItem.sell, [TAG_ITEMNAME] = shopItem.name}))
		doPlayerAddMoney(cid, amount * shopItem.sell)

		return true
	end
	doPlayerSendCancel(cid, npcHandler:parseMessage(npcHandler:getMessage(MESSAGE_NEEDITEM), {[TAG_PLAYERNAME] = getPlayerName(cid), [TAG_ITEMCOUNT] = amount, [TAG_TOTALCOST] = amount * shopItem.sell, [TAG_ITEMNAME] = shopItem.name}))

	return false
end

function onCreatureAppear(cid)                  npcHandler:onCreatureAppear(cid)                        end
function onCreatureDisappear(cid)               npcHandler:onCreatureDisappear(cid)                     end
function onCreatureSay(cid, type, msg)          npcHandler:onCreatureSay(cid, type, msg)                end
function onThink()                              npcHandler:onThink()                                    end

function creatureSayCallback(cid, type, msg)
	if(not npcHandler:isFocused(cid)) then
		return false
	elseif msgcontains(msg, "trade") then
		local items = getPlayerLevel(cid) < 50 and {
			{name="spellbook", id=2175, buy=100},
			{name="magic light wand", id=2163, buy=300}
		} or {
			{name="spellbook", id=2175, buy=100},
			{name="magic light wand", id=2163, buy=300}
		}
		openShopWindow(cid, items,
			function(cid, itemid, subType, amount, ignoreCap, inBackpacks)
				customCallbackOnBuy(cid, itemid, subType, amount, ignoreCap, inBackpacks, items)
			end,
			function(cid, itemid, subType, amount, ignoreCap, inBackpacks)
				customCallbackOnSell(cid, itemid, subType, amount, ignoreCap, inBackpacks, items)
			end
		)
		npcHandler:say("Of course, just browse through my wares.", cid)
	end
	return true
end

npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())