Trade: Full support for dedicated trading.
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zorman2000
parent
8648e8fdff
commit
ce39d59356
@ -82,7 +82,7 @@ end
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-- Gets all the item for a specified budget
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function npc.trade.prices.get_items_for_currency_count(tier, count, price_factor)
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local result = {}
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minetest.log("Currency quantity: "..dump(count))
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--minetest.log("Currency quantity: "..dump(count))
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for item_name, price in pairs(npc.trade.prices.table) do
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-- Check price currency is of the same tier
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if price.tier == tier and price.count <= count then
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@ -116,7 +116,7 @@ function npc.trade.prices.get_items_for_currency_count(tier, count, price_factor
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result[item_name].max_buyable_item_count = max_buying_item_count
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end
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end
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minetest.log("Final result: "..dump(result))
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--minetest.log("Final result: "..dump(result))
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return result
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end
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145
trade/trade.lua
145
trade/trade.lua
@ -9,6 +9,10 @@ npc.trade.NONE = "none"
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npc.trade.OFFER_BUY = "buy"
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npc.trade.OFFER_SELL = "sell"
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-- This variable establishes how much items a dedicated
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-- trader will buy until retiring the offer
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npc.trade.DEDICATED_MAX_BUY_AMOUNT = 5
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-- This table holds all responses for trades
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npc.trade.results = {
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single_trade_offer = {},
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@ -193,6 +197,9 @@ function npc.trade.generate_trade_offers_by_status(self)
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[1] = npc.trade.get_casual_trade_offer(self, npc.trade.OFFER_SELL)
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}
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elseif status == npc.trade.TRADER then
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-- Clear current offers
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self.trader_data.buy_offers = {}
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self.trader_data.sell_offers = {}
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-- Get trade offers for a dedicated trader
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local offers = npc.trade.get_dedicated_trade_offers(self)
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-- Store buy offers
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@ -291,49 +298,70 @@ function npc.trade.get_dedicated_trade_offers(self)
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local trade_list = self.trader_data.trade_list.both
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for item_name, trade_info in pairs(trade_list) do
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-- Abort if more than 12 buy or sell offers are made
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if table.getn(offers.sell) >= 12 or table.getn(offers.buy) >= 12 then
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break
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end
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-- For each item on the trader list, check if it is in the NPC inventory.
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-- If it is, create a sell offer, else create a buy offer if possible.
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-- Also, avoid creating sell offers immediately if the item was just bought
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local item = npc.inventory_contains(self, item_name)
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if item ~= nil then
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-- Create sell offer for this item. Currently, traders will offer to sell only
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-- of their items to allow the fine control for players to buy what they want.
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-- This requires, however, that the trade offers are re-generated everytime a
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-- sell is made.
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table.insert(offers.sell, npc.trade.create_offer(
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npc.trade.OFFER_SELL,
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item_name,
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nil,
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nil,
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1)
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)
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-- Set last offer type
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trade_info.last_offer_type = npc.trade.OFFER_SELL
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if item ~= nil and trade_info.last_offer_type ~= npc.trade.OFFER_BUY then
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-- Create sell offer for this item. Currently, traders will offer to sell only
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-- of their items to allow the fine control for players to buy what they want.
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-- This requires, however, that the trade offers are re-generated everytime a
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-- sell is made.
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table.insert(offers.sell, npc.trade.create_offer(
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npc.trade.OFFER_SELL,
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item_name,
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nil,
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nil,
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1)
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)
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-- Set last offer type
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trade_info.last_offer_type = npc.trade.OFFER_SELL
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else
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-- Avoid flipping an item to the buy side if the stock was just depleted
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if trade_info.last_offer_type ~= npc.trade.OFFER_SELL then
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-- Create buy offer for this item
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-- Only do if the NPC can actually afford the items.
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local currencies = npc.trade.get_currencies_in_inventory(self)
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-- Choose a random currency
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local chosen_tier = currencies[math.random(#currencies)]
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-- Get items for this currency
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local buyable_items =
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npc.trade.prices.get_items_for_currency_count(chosen_tier.name, chosen_tier.count, 0.5)
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-- Check if the item from trader list is present in the buyable items list
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for buyable_item, price_info in pairs(buyable_items) do
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if buyable_item == item_name then
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-- If item found, create a buy offer for this item
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-- Again, offers are created for one item only. Buy offers should be removed
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-- after the NPC has bought a certain quantity, say, 5 items.
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table.insert(offers.buy, npc.trade.create_offer(
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npc.trade.OFFER_BUY,
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item_name,
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price_info.price,
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price_info.min_buyable_item_price,
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price_info.min_buyable_item_count)
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)
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-- Set last offer type
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trade_info.last_offer_type = npc.trade.OFFER_BUY
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-- Check if currency isn't empty
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if #currencies > 0 then
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-- Choose a random currency
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local chosen_tier = currencies[math.random(#currencies)]
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-- Get items for this currency
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local buyable_items =
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npc.trade.prices.get_items_for_currency_count(chosen_tier.name, chosen_tier.count, 0.5)
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-- Check if the item from trader list is present in the buyable items list
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for buyable_item, price_info in pairs(buyable_items) do
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if buyable_item == item_name then
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-- If item found, create a buy offer for this item
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-- Again, offers are created for one item only. Buy offers should be removed
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-- after the NPC has bought a certain quantity, say, 5 items.
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minetest.log("Item: "..item_name)
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minetest.log("Trade info: "..dump(trade_info))
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minetest.log("Logic: "..dump(trade_info.item_bought_count == nil
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or (trade_info.item_bought_count ~= nil and trade_info.item_bought_count <= npc.trade.DEDICATED_MAX_BUY_AMOUNT)))
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if trade_info.item_bought_count == nil
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or (trade_info.item_bought_count ~= nil and trade_info.item_bought_count <= npc.trade.DEDICATED_MAX_BUY_AMOUNT) then
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-- Create trade offer for this item
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table.insert(offers.buy, npc.trade.create_offer(
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npc.trade.OFFER_BUY,
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item_name,
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price_info.price,
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price_info.min_buyable_item_price,
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price_info.min_buyable_item_count)
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)
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-- Set last offer type
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trade_info.last_offer_type = npc.trade.OFFER_BUY
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else
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-- Clear the trade info for this item
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trade_info.item_bought_count = 0
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end
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end
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end
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end
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end
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@ -382,8 +410,9 @@ function npc.trade.create_offer(offer_type, item, price, min_price_item_count, c
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end
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-- TODO: THis method needs to be refactored to be able to manage
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-- both NPC inventories and chest inventories
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-- TODO: This method needs to be refactored to be able to manage
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-- both NPC inventories and chest inventories.
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-- Returns true if trade was possible, else returns false.
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function npc.trade.perform_trade(self, player_name, offer)
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local item_stack = ItemStack(offer.item)
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@ -397,20 +426,25 @@ function npc.trade.perform_trade(self, player_name, offer)
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if inv:contains_item("main", item_stack) then
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-- Check if there is enough room to add the price item to player
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if inv:room_for_item("main", price_stack) then
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-- Remove item from player
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-- Remove item from player
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inv:remove_item("main", item_stack)
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-- Remove price item from NPC
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npc.take_item_from_inventory_itemstring(self, offer.price)
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-- Add item to NPC's inventory
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npc.add_item_to_inventory_itemstring(self, offer.item)
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-- Add price items to player
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inv:add_item("main", price_stack)
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-- Send message to player
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minetest.chat_send_player(player_name, "Thank you!")
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return true
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else
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minetest.chat_send_player(player_name,
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"Looks like you can't get what I'm giving you for payment!")
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return false
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end
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else
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minetest.chat_send_player(player_name, "Looks like you don't have what I want to buy...")
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return false
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end
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else
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-- If NPC is selling to the player, then player gives price and gets
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@ -419,19 +453,24 @@ function npc.trade.perform_trade(self, player_name, offer)
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if inv:contains_item("main", price_stack) then
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-- Check if there is enough room to add the item to player
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if inv:room_for_item("main", item_stack) then
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-- Remove item from player
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-- Remove price item from player
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inv:remove_item("main", price_stack)
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-- Remove sell item from NPC
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npc.take_item_from_inventory_itemstring(self, offer.item)
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-- Add item to NPC's inventory
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npc.add_item_to_inventory_itemstring(self, offer.price)
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-- Add price items to player
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inv:add_item("main", item_stack)
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-- Send message to player
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minetest.chat_send_player(player_name, "Thank you!")
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return true
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else
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minetest.chat_send_player(player_name, "Looks like you can't carry anything else...")
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return false
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end
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else
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minetest.chat_send_player(player_name, "Looks like you don't have what I'm asking for!")
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return false
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end
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end
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end
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@ -469,7 +508,35 @@ minetest.register_on_player_receive_fields(function (player, formname, fields)
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for i = 1, #trade_offers do
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local price_button = "price"..tostring(i)
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if fields[price_button] then
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npc.trade.perform_trade(player_response.npc, player_name, trade_offers[i])
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local trade_result = npc.trade.perform_trade(player_response.npc, player_name, trade_offers[i])
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if trade_result == true then
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-- Lock actions
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npc.lock_actions(player_response.npc)
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-- Account for buyed items
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if player_response.offers_type == npc.trade.OFFER_BUY then
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-- Increase the item bought count
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local offer_item_name = npc.get_item_name(trade_offers[i].item)
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minetest.log("Bought item name: "..dump(offer_item_name))
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minetest.log(dump(player_response.npc.trader_data.trade_list.both[offer_item_name]))
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-- Check if this item has been bought before
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if player_response.npc.trader_data.trade_list.both[offer_item_name].item_bought_count == nil then
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-- Set first count to 1
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player_response.npc.trader_data.trade_list.both[offer_item_name].item_bought_count = 1
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else
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-- Increase count
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player_response.npc.trader_data.trade_list.both[offer_item_name].item_bought_count
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= player_response.npc.trader_data.trade_list.both[offer_item_name].item_bought_count + 1
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end
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end
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-- Re-generate trade offers
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npc.trade.generate_trade_offers_by_status(player_response.npc)
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-- Show refreshed formspec again to player
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npc.trade.show_dedicated_trade_formspec(player_response.npc, player, player_response.offers_type)
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return true
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else
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minetest.close_formspec(player_name, "advanced_npc:dedicated_trading_offers")
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return false
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end
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--minetest.log("Player selected: "..dump(trade_offers[i]))
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end
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end
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