trade_inv now calls extra functions so that the code can be changed at runtime with npc_talk_reload, too
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Sokomine
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trade_simple.lua
211
trade_simple.lua
@ -862,6 +862,118 @@ yl_speak_up.get_fs_trade_simple = function(player, trade_id)
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end
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-- functions for handling the detached trade inventory of players
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-- these functions exist as extra functions so that they can be changed with /npc_talk_reload
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-- moving of items between diffrent lists is not allowed
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yl_speak_up.trade_inv_allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
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if(not(player)) then
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return 0
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end
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if(from_list ~= to_list) then
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return 0
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end
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return count
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end
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-- these all require calling special functions, depending on context
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yl_speak_up.trade_inv_allow_put = function(inv, listname, index, stack, player)
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if(not(player)) then
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return 0
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end
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-- the "buy" slot is managed by the NPC; the player only takes from it
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if(listname == "buy") then
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return 0
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end
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-- do not allow used items or items with metadata in the setup slots
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-- (they can't really be traded later on anyway)
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if(listname == "setup") then
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-- check if player can edit NPC, item is undammaged and contains no metadata
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return yl_speak_up.inventory_allow_item(player, stack,
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"yl_speak_up:add_trade_simple")
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end
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-- allow putting something in in edit mode - but not otherwise
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if(listname == "npc_gives") 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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-- only in edit mode! else the NPC manages this slot
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if(not(n_id) or yl_speak_up.edit_mode[pname] ~= n_id) then
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return 0
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end
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end
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return stack:get_count()
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end
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yl_speak_up.trade_inv_allow_take = function(inv, listname, index, stack, player)
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if(not(player)) then
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return 0
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end
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-- can the trade be made?
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if(listname == "buy") then
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return yl_speak_up.can_trade_simple(player, stack:get_count())
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end
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return stack:get_count()
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end
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yl_speak_up.trade_inv_on_move = function(inv, from_list, from_index, to_list, to_index, count, player)
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end
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yl_speak_up.trade_inv_on_put = function(inv, listname, index, stack, player)
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if(listname == "pay") then
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local pname = player:get_player_name()
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-- show formspec with updated information (perhaps sale is now possible)
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yl_speak_up.show_fs(player, "trade_simple")
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elseif(listname == "npc_gives"
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or listname == "npc_wants") then
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-- monitor changes in order to adjust the formspec
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yl_speak_up.action_inv_changed(inv, listname, index, stack, player, "put")
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end
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end
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yl_speak_up.trade_inv_on_take = function(inv, listname, index, stack, player)
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-- the player may have put something wrong in the payment slot
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-- -> show updated formspec
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if(listname == "pay") then
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local pname = player:get_player_name()
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-- show formspec with updated information (perhaps sale is now possible)
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yl_speak_up.show_fs(player, "trade_simple")
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elseif(listname == "buy") then
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-- do the exchange
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yl_speak_up.do_trade_simple(player, stack:get_count())
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local pname = player:get_player_name()
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-- which trade are we talking about?
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local trade = yl_speak_up.trade[pname]
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-- when the player traded once inside an action: that action was a success;
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-- execute next action
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-- but only if not in edit mode
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if(trade and trade.trade_done > 0
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and not(trade.trade_is_trade_list)
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and yl_speak_up.edit_mode[pname] ~= trade.n_id) then
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local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
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-- return surplus items from the pay slot
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local pay = trade_inv:get_stack("pay", 1)
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local player_inv = player:get_inventory()
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if( pay and player_inv:room_for_item("main", pay)) then
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player_inv:add_item("main", pay)
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trade_inv:set_stack("pay", 1, "")
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end
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-- done trading
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yl_speak_up.speak_to[pname].target_d_id = nil
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yl_speak_up.speak_to[pname].trade_id = nil
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-- execute the next action
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yl_speak_up.execute_next_action(player, trade.a_id, true)
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return
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end
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-- information may require an update (NPC might now be out of stock), or
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-- the player can do the trade a second time
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yl_speak_up.show_fs(player, "trade_simple")
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elseif(listname == "npc_gives"
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or listname == "npc_wants") then
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-- monitor changes in order to adjust the formspec
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yl_speak_up.action_inv_changed(inv, listname, index, stack, player, "take")
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end
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end
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-- create a detached inventory for the *player* for trading with the npcs
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-- (called in minetest.register_on_joinplayer)
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yl_speak_up.player_joined_add_trade_inv = function(player, last_login)
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@ -871,109 +983,26 @@ yl_speak_up.player_joined_add_trade_inv = function(player, last_login)
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-- the functions for monitoring changes will be important later on
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-- only the the player owning this detached inventory may access it
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local trade_inv = minetest.create_detached_inventory("yl_speak_up_player_"..tostring(pname), {
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-- moving of items between diffrent lists is not allowed
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allow_move = function(inv, from_list, from_index, to_list, to_index, count, player)
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if(not(player) or player:get_player_name() ~= pname) then
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return 0
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end
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if(from_list ~= to_list) then
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return 0
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end
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return count
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return yl_speak_up.trade_inv_allow_move(inv, from_list, from_index, to_list,
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to_index, count, player)
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end,
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-- these all require calling special functions, depending on context
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allow_put = function(inv, listname, index, stack, player)
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if(not(player) or player:get_player_name() ~= pname) then
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return 0
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end
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-- the "buy" slot is managed by the NPC; the player only takes from it
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if(listname == "buy") then
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return 0
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end
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-- do not allow used items or items with metadata in the setup slots
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-- (they can't really be traded later on anyway)
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if(listname == "setup") then
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-- check if player can edit NPC, item is undammaged and contains no metadata
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return yl_speak_up.inventory_allow_item(player, stack,
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"yl_speak_up:add_trade_simple")
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end
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-- allow putting something in in edit mode - but not otherwise
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if(listname == "npc_gives") 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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-- only in edit mode! else the NPC manages this slot
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if(not(n_id) or yl_speak_up.edit_mode[pname] ~= n_id) then
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return 0
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end
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end
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return stack:get_count()
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return yl_speak_up.trade_inv_allow_put(inv, listname, index, stack, player)
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end,
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allow_take = function(inv, listname, index, stack, player)
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if(not(player) or player:get_player_name() ~= pname) then
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return 0
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end
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-- can the trade be made?
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if(listname == "buy") then
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return yl_speak_up.can_trade_simple(player, stack:get_count())
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end
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return stack:get_count()
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return yl_speak_up.trade_inv_allow_take(inv, listname, index, stack, player)
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end,
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on_move = function(inv, from_list, from_index, to_list, to_index, count, player)
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return yl_speak_up.trade_inv_on_move(inv, from_list, from_index, to_list,
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to_index, count, player)
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end,
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on_put = function(inv, listname, index, stack, player)
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if(listname == "pay") then
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local pname = player:get_player_name()
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-- show formspec with updated information (perhaps sale is now possible)
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yl_speak_up.show_fs(player, "trade_simple")
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elseif(listname == "npc_gives"
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or listname == "npc_wants") then
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-- monitor changes in order to adjust the formspec
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yl_speak_up.action_inv_changed(inv, listname, index, stack, player, "put")
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end
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return yl_speak_up.trade_inv_on_put(inv, listname, index, stack, player)
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end,
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on_take = function(inv, listname, index, stack, player)
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-- the player may have put something wrong in the payment slot
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-- -> show updated formspec
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if(listname == "pay") then
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local pname = player:get_player_name()
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-- show formspec with updated information (perhaps sale is now possible)
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yl_speak_up.show_fs(player, "trade_simple")
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elseif(listname == "buy") then
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-- do the exchange
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yl_speak_up.do_trade_simple(player, stack:get_count())
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local pname = player:get_player_name()
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-- which trade are we talking about?
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local trade = yl_speak_up.trade[pname]
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-- when the player traded once inside an action: that action was a success;
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-- execute next action
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-- but only if not in edit mode
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if(trade and trade.trade_done > 0
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and not(trade.trade_is_trade_list)
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and yl_speak_up.edit_mode[pname] ~= trade.n_id) then
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local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
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-- return surplus items from the pay slot
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local pay = trade_inv:get_stack("pay", 1)
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local player_inv = player:get_inventory()
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if( pay and player_inv:room_for_item("main", pay)) then
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player_inv:add_item("main", pay)
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trade_inv:set_stack("pay", 1, "")
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end
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-- done trading
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yl_speak_up.speak_to[pname].target_d_id = nil
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yl_speak_up.speak_to[pname].trade_id = nil
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-- execute the next action
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yl_speak_up.execute_next_action(player, trade.a_id, true)
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return
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end
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-- information may require an update (NPC might now be out of stock), or
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-- the player can do the trade a second time
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yl_speak_up.show_fs(player, "trade_simple")
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elseif(listname == "npc_gives"
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or listname == "npc_wants") then
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-- monitor changes in order to adjust the formspec
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yl_speak_up.action_inv_changed(inv, listname, index, stack, player, "take")
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end
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return yl_speak_up.trade_inv_on_take(inv, listname, index, stack, player)
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end,
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})
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-- prepare the actual inventories
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