forked from Sokomine/yl_speak_up
added trade interface via buy button
This commit is contained in:
Sokomine
parent
0d88093a45
commit
d5fe15a7c7
314
fs_trade_via_buy_button.lua
Normal file
314
fs_trade_via_buy_button.lua
Normal file
@ -0,0 +1,314 @@
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-- buy-button-based trading from trade list: one item(stack) for another item(stack)
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-- helper function
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yl_speak_up.get_trade_item_desc = function(item)
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local stack = ItemStack(item)
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local def = minetest.registered_items[stack:get_name()]
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if(def and def.description) then
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return minetest.formspec_escape(tostring(stack:get_count()).."x "..def.description)
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end
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return minetest.formspec_escape(tostring(stack:get_count()).."x "..stack:get_name())
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end
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-- helper function; also used by trade_list.lua
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yl_speak_up.get_sorted_trade_id_list = function(dialog)
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-- make sure all fields exist
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yl_speak_up.setup_trade_limits(dialog)
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local keys = {}
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for k, v in pairs(dialog.trades) do
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if(k ~= "limits" and k ~= "") then
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-- structure of the indices: sell name amount for name amount
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local parts = string.split(k, " ")
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if(parts and #parts == 6 and parts[4] == "for"
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and v.pay and v.pay[1] ~= "" and v.pay[1] == parts[5].." "..parts[6]
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and v.buy and v.buy[1] ~= "" and v.buy[1] == parts[2].." "..parts[3]
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and minetest.registered_items[parts[5]]
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and minetest.registered_items[parts[2]]
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and tonumber(parts[6]) > 0
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and tonumber(parts[3]) > 0) then
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table.insert(keys, k)
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end
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end
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end
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table.sort(keys)
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return keys
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end
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yl_speak_up.input_trade_via_buy_button = function(player, formname, fields)
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local pname = player:get_player_name()
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if(fields.buy_directly) then
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local trade_id = yl_speak_up.speak_to[pname].trade_id
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local error_msg = yl_speak_up.check_trade_via_buy_button(player, trade_id, true)
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if(error_msg ~= "OK") then
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yl_speak_up.show_fs(player, "msg", {
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input_to = "yl_speak_up:trade_via_buy_button",
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formspec = "size[6,2.5]"..
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"label[0.2,-0.2;"..error_msg.."\nTrade aborted.]"..
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"button[2,1.5;1,0.9;back_from_error_msg;Back]"})
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return
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end
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yl_speak_up.show_fs(player, "trade_via_buy_button", trade_id)
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return
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end
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-- scroll through the trades with prev/next buttons
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if(fields.prev_trade or fields.next_trade) then
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local pname = player:get_player_name()
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local n_id = yl_speak_up.speak_to[pname].n_id
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local dialog = yl_speak_up.speak_to[pname].dialog
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local keys = yl_speak_up.speak_to[pname].trade_id_list or {}
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local trade_id = yl_speak_up.speak_to[pname].trade_id
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local idx = math.max(1, table.indexof(keys, trade_id))
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if(fields.prev_trade) then
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idx = idx - 1
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elseif(fields.next_trade) then
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idx = idx + 1
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end
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if(idx > #keys) then
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idx = 1
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elseif(idx < 1) then
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idx = #keys
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end
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yl_speak_up.speak_to[pname].trade_id = keys[idx]
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-- this is another trade; count from 0 again
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yl_speak_up.speak_to[pname].trade_done = nil
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end
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-- TODO: delete button if(fields.delete_trade_via_buy_button) then
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-- show the trade list
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if(fields.back_to_trade_list or fields.quit
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or not(yl_speak_up.speak_to[pname].trade_id)) then
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yl_speak_up.show_fs(player, "trade_list")
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return
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end
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-- show the trade formspec again
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yl_speak_up.show_fs(player, "trade_via_buy_button", yl_speak_up.speak_to[pname].trade_id)
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end
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-- helper function
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-- if do_trade is false: check only if the trade would be possible and return
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-- error message if not; return "OK" when trade is possible
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-- if do_trade is true: if possible, execute the trade; return the same as above
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yl_speak_up.check_trade_via_buy_button = function(player, trade_id, do_trade)
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local pname = player:get_player_name()
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local n_id = yl_speak_up.speak_to[pname].n_id
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local dialog = yl_speak_up.speak_to[pname].dialog
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-- make sure all necessary table entries exist
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yl_speak_up.setup_trade_limits(dialog)
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local this_trade = dialog.trades[trade_id]
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-- the players' inventory
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local player_inv = player:get_inventory()
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-- the NPCs' inventory
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local npc_inv = minetest.get_inventory({type="detached", name="yl_speak_up_npc_"..tostring(n_id)})
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if(not(this_trade)) then
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return "Trade not found."
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elseif(not(player_inv)) then
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return "Couldn't find player's inventory."
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elseif(not(npc_inv)) then
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return "Couldn't find the NPC's inventory."
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end
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-- store which trade we're doing
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yl_speak_up.speak_to[pname].trade_id = trade_id
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-- what the player pays to the npc:
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local pay_stack = ItemStack(dialog.trades[ trade_id ].pay[1])
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-- what the npc sells and the player buys:
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local buy_stack = ItemStack(dialog.trades[ trade_id ].buy[1])
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local npc_name = minetest.formspec_escape(dialog.n_npc)
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-- can the NPC provide his part?
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if(not(npc_inv:contains_item("npc_main", buy_stack))) then
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return "Out of stock" --"Sorry. "..npc_name.." ran out of stock.\nPlease come back later."
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-- has the NPC room for the payment?
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elseif(not(npc_inv:room_for_item("npc_main", pay_stack))) then
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return npc_name.." has no room left!"
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-- return "Sorry. "..npc_name.." ran out of inventory space.\n"..
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-- "There is no room to store your payment!"
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end
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-- are there any limits which we have to take into account?
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local min_storage = dialog.trades.limits.sell_if_more[ buy_stack:get_name() ]
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local max_storage = dialog.trades.limits.buy_if_less[ pay_stack:get_name() ]
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if((min_storage and min_storage > 0)
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or (max_storage and max_storage < 10000)) then
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local counted_npc_inv = yl_speak_up.count_npc_inv(n_id)
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local stock_pay = counted_npc_inv[ pay_stack:get_name() ] or 0
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local stock_buy = counted_npc_inv[ buy_stack:get_name() ] or 0
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-- trade limit: is enough left after the player buys the item?
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if( min_storage and min_storage > stock_buy - buy_stack:get_count()) then
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return "Sorry. "..npc_name.." currently does not want to\nsell that much."..
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" Current stock: "..tostring(stock_buy)..
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" (min: "..tostring(min_storage).."). Perhaps later?"
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-- trade limit: make sure the bought amount does not exceed the desired maximum
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elseif(max_storage and max_storage < stock_pay + pay_stack:get_count()) then
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return "Sorry. "..npc_name.." currently does not want to\n"..
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"buy that much."..
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" Current stock: "..tostring(stock_pay)..
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" (max: "..tostring(max_storage).."). Perhaps later?"
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end
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end
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-- can the player pay?
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if(not(player_inv:contains_item("main", pay_stack))) then
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-- both slots will remain empty
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return "You can't pay the price."
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elseif(not(player_inv:room_for_item("main", buy_stack))) then
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-- the player has no room for the sold item; give a warning
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return "You don't have enough free inventory\nspace to store your purchase."
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end
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-- was it a dry run to check if the trade is possible?
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if(not(do_trade)) then
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return "OK"
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end
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-- actually do the trade
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local payment = player_inv:remove_item("main", pay_stack)
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local sold = npc_inv:remove_item("npc_main", buy_stack)
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-- used items cannot be sold as there is no fair way to indicate how
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-- much they are used
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if(payment:get_wear() > 0 or sold:get_wear() > 0) then
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-- revert the trade
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player_inv:add_item("main", payment)
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npc_inv:add_item("npc_main", sold)
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return "Sorry. "..npc_name.." accepts only undammaged items."
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end
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player_inv:add_item("main", sold)
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npc_inv:add_item("npc_main", payment)
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-- save the inventory of the npc so that the payment does not get lost
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yl_speak_up.save_npc_inventory( n_id )
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-- store for statistics how many times the player has executed this trade
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-- (this is also necessary to switch to the right target dialog when
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-- dealing with dialog options trades)
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if(not(yl_speak_up.speak_to[pname].trade_done)) then
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yl_speak_up.speak_to[pname].trade_done = 0
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end
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yl_speak_up.speak_to[pname].trade_done = yl_speak_up.speak_to[pname].trade_done + 1
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-- log the trade
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yl_speak_up.log_change(pname, n_id,
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"bought "..tostring(pay_stack:to_string())..
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" for "..tostring(buy_stack:to_string()))
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return "OK"
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end
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-- trade for a player (the owner of the NPC): one item(stack) for another
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-- trade by clicking on the "buy" button instead of moving inventory items around
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-- checks if payment and buying is possible
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yl_speak_up.get_fs_trade_via_buy_button = function(player, trade_id)
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local pname = player:get_player_name()
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local n_id = yl_speak_up.speak_to[pname].n_id
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local dialog = yl_speak_up.speak_to[pname].dialog
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-- make sure all necessary table entries exist
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yl_speak_up.setup_trade_limits(dialog)
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local this_trade = dialog.trades[trade_id]
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-- the players' inventory
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local player_inv = player:get_inventory()
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-- the NPCs' inventory
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local npc_inv = minetest.get_inventory({type="detached", name="yl_speak_up_npc_"..tostring(n_id)})
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if(not(this_trade) or not(player_inv) or not(npc_inv)) then
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return yl_speak_up.trade_fail_fs
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end
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-- what the player pays to the npc:
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local pay = dialog.trades[ trade_id ].pay[1]
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-- what the npc sells and the player buys:
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local buy = dialog.trades[ trade_id ].buy[1]
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local pay_name = yl_speak_up.get_trade_item_desc(pay)
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local buy_name = yl_speak_up.get_trade_item_desc(buy)
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local npc_name = minetest.formspec_escape(dialog.n_npc)
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-- get the number of the trade
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local keys = yl_speak_up.speak_to[pname].trade_id_list or {}
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local idx = math.max(1, table.indexof(keys, trade_id))
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-- the common formspec, shared by actual trade and configuration
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-- no listring here as that would make things more complicated
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local formspec = { -- "size[8.5,8]"..
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yl_speak_up.show_fs_simple_deco(10, 8.8)..
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"container[0.75,0]"..
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"label[4.35,1.4;", npc_name, " sells:]",
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"list[current_player;main;0.2,4.55;8,1;]",
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"list[current_player;main;0.2,5.78;8,3;8]",
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-- "label[7.0,0.2;Offer ", tostring(idx), "/", tostring(#keys), "]",
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-- "label[2.5,0.7;Trading with ", npc_name, "]",
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"label[1.5,0.7;Offer no. ",
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tostring(idx), "/", tostring(#keys),
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" from ", npc_name, "]",
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"label[1.5,1.4;You pay:]",
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-- show images of price and what is sold so that the player knows what
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-- it costs and what he will get even if the trade is not possible at
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-- that moment
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-- "item_image[2.1,2.0;1,1;",
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"item_image_button[2.1,1.9;1.2,1.2;",
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tostring(pay),
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";pay_item_img;",
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"]",
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-- "item_image[5.1,2.0;1,1;",
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-- tostring(buy),
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"item_image_button[5.1,1.9;1.2,1.2;",
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tostring(buy),
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";buy_item_img;",
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"]",
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"label[1.5,3.0;",
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pay_name,
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"]",
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"label[4.35,3.0;",
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buy_name,
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"]",
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"image[3.5,2.0;1,1;gui_furnace_arrow_bg.png^[transformR270]",
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-- go back to the trade list
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"button[0.2,0.0;8.0,1.0;back_to_trade_list;Back to list]"..
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"tooltip[back_to_trade_list;Click here once you've traded enough with this "..
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"NPC and want to get back to the trade list.]"
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}
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-- show edit button for the owner if in edit_mode
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if(yl_speak_up.may_edit_npc(player, n_id)) then
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-- for trades in trade list: allow delete (new trades can easily be added)
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-- allow delete for trades in trade list even if not in edit mode
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-- (entering edit mode for that would be too much work)
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table.insert(formspec,
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"button[0.2,2.0;1.2,0.9;delete_trade_via_buy_button;Delete]"..
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"tooltip[delete_trade_via_buy_button;"..
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"Delete this trade. You can do so only if\n"..
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"you can edit the NPC as such (i.e. own it).]")
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end
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-- dry-run: test if the trade can be done
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local trade_possible = yl_speak_up.check_trade_via_buy_button(player, trade_id, false)
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if(trade_possible == "OK") then
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local buy_str = "Buy"
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local trade_done = yl_speak_up.speak_to[pname].trade_done
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if(trade_done and trade_done > 0) then
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buy_str = "Buy again. Bought: "..tostring(trade_done).."x"
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end
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table.insert(formspec, "button[0.2,3.5;8.0,1.0;buy_directly;")
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-- "button[6.5,2.0;1.7,0.9;buy_directly;Buy]"..
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table.insert(formspec, buy_str)
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table.insert(formspec, "]")
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table.insert(formspec, "tooltip[buy_directly;Click here in order to buy.]")
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else
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-- set a red background color in order to alert thep layer to the error
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table.insert(formspec, "style_type[button;bgcolor=#FF4444]"..
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"button[0.2,3.5;8.0,1.0;back_from_error_msg;")
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-- table.insert(formspec, "label[0.5,3.5;")
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table.insert(formspec, trade_possible)
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table.insert(formspec, ']')
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-- set the background color for the next buttons back to our normal one
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table.insert(formspec, 'style_type[button;bgcolor=#a37e45]')
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-- table.insert(formspec, "label[6.5,2.0;Trade not\npossible.]")
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end
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table.insert(formspec, "container_end[]"..
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"real_coordinates[true]"..
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"button[0.5,1.9;0.8,2.0;prev_trade;<]"..
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"button[11.7,1.9;0.8,2.0;next_trade;>]"..
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"tooltip[prev_trade;Show previous trade offer]"..
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"tooltip[next_trade;Show next trade offer]")
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return table.concat(formspec, '')
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end
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2
init.lua
2
init.lua
@ -87,6 +87,8 @@ dofile(modpath .. "fs_trade_limit.lua")
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dofile(modpath .. "fs_edit_trade_limit.lua")
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-- trade one item(stack) against one other item(stack)
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dofile(modpath .. "trade_simple.lua")
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-- just click on a button to buy items from the trade list
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dofile(modpath .. "fs_trade_via_buy_button.lua")
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-- easily accessible list of all trades the NPC offers
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dofile(modpath .. "trade_list.lua")
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-- as the name says: list which npc acesses a variable how and in which context
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12
show_fs.lua
12
show_fs.lua
@ -45,6 +45,10 @@ minetest.register_on_player_receive_fields( function(player, formname, fields)
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elseif formname == "yl_speak_up:do_trade_simple" then
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yl_speak_up.input_do_trade_simple(player, formname, fields)
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return true
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-- handled in fs_trade_via_buy_button.lua
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elseif formname == "yl_speak_up:trade_via_buy_button" then
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yl_speak_up.input_trade_via_buy_button(player, formname, fields)
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return true
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-- (as above - also handled in trade_simple.lua)
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elseif formname == "yl_speak_up:add_trade_simple" then
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yl_speak_up.input_add_trade_simple(player, formname, fields)
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@ -296,6 +300,14 @@ yl_speak_up.show_fs = function(player, fs_name, param)
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yl_speak_up.show_fs_ver(pname, "yl_speak_up:do_trade_simple",
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yl_speak_up.get_fs_trade_simple(player, param), 1)
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elseif(fs_name == "trade_via_buy_button") then
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-- the optional parameter param is the trade_id
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if(not(param) and yl_speak_up.speak_to[pname]) then
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param = yl_speak_up.speak_to[pname].trade_id
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end
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yl_speak_up.show_fs_ver(pname, "yl_speak_up:trade_via_buy_button",
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yl_speak_up.get_fs_trade_via_buy_button(player, param), 1)
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elseif(fs_name == "add_trade_simple") then
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-- the optional parameter param is the trade_id
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if(not(param) and yl_speak_up.speak_to[pname]) then
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@ -43,7 +43,7 @@ yl_speak_up.input_trade_list = function(player, formname, fields)
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-- the "_" is necessary for the price button so that offer and price
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-- button can each have their tooltip *and* lead to the same dialog
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if(fields[ k ] or fields[ k.."_" ]) then
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yl_speak_up.show_fs(player, "trade_simple", k)
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yl_speak_up.show_fs(player, "trade_via_buy_button", k)
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return
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end
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end
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@ -108,11 +108,9 @@ yl_speak_up.get_fs_trade_list = function(player, show_dialog_option_trades)
|
||||
|
||||
-- the order in which the trades appear shall not change each time;
|
||||
-- but lua cannot sort the keys of a table by itself...
|
||||
local sorted_trades = {}
|
||||
for k in pairs(dialog.trades) do
|
||||
table.insert(sorted_trades, k)
|
||||
end
|
||||
table.sort(sorted_trades)
|
||||
-- this function can be found in fs_trade_via_button.lua
|
||||
local sorted_trades = yl_speak_up.get_sorted_trade_id_list(dialog)
|
||||
yl_speak_up.speak_to[pname].trade_id_list = sorted_trades
|
||||
|
||||
for i, k in ipairs(sorted_trades) do
|
||||
local v = dialog.trades[ k ]
|
||||
@ -157,6 +155,7 @@ yl_speak_up.get_fs_trade_list = function(player, show_dialog_option_trades)
|
||||
-- show the price label only when the offer is in stock
|
||||
table.insert(formspec, "label[0,1.9;->]"..
|
||||
"label[0,4.4;Price:]\ncontainer_end[]")
|
||||
|
||||
end
|
||||
col = col + 1
|
||||
if(col >= yl_speak_up.trade_max_cols) then
|
||||
@ -201,7 +200,7 @@ yl_speak_up.get_fs_trade_list = function(player, show_dialog_option_trades)
|
||||
text, text,
|
||||
true, nil, nil, pname_for_old_fs)
|
||||
-- show a list of how much the NPC will buy and sell
|
||||
text = "Do not buy or sell more than what I will tell you."
|
||||
text = "Limits: Do not buy or sell more than what I will tell you."
|
||||
h = yl_speak_up.add_edit_button_fs_talkdialog(formspec, h,
|
||||
"trade_limit",
|
||||
text, text,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user