forked from Sokomine/yl_speak_up
added yl_speak_up.input_add_trade_simple
This commit is contained in:
Sokomine
parent
39632a71f4
commit
2e2ede2ebf
106
trade_simple.lua
106
trade_simple.lua
@ -5,7 +5,89 @@ yl_speak_up.trade_fail_fs = "size[6,2]"..
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"label[0.2,0.5;Ups! The trade is not possible.\nPlease notify an admin.]"..
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"button_exit[2,1.5;1,0.9;exit;Exit]"
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-- TODO: when closing the formspec: give the items in the pay slot back
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-- the player wants to add a simple trade; handle formspec input
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yl_speak_up.input_add_trade_simple = function(player, formname, fields)
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if(not(player)) then
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return 0
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end
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local pname = player:get_player_name()
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-- the trade can only be changed in edit mode
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if(yl_speak_up.edit_mode[pname] ~= yl_speak_up.speak_to[pname].n_id
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or not(yl_speak_up.speak_to[pname].n_id)) then
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return 0
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end
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-- we return from showing an error message (the player may not have noticed
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-- a chat message while viewing a formspec)
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if(fields.back_from_error_msg) then
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minetest.show_formspec(pname, "yl_speak_up:add_trade_simple",
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yl_speak_up.get_fs_trade_simple(player))
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return
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end
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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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local d_id = yl_speak_up.speak_to[pname].d_id
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local n_id = yl_speak_up.speak_to[pname].n_id
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-- this also contains the inventory list "setup" where the player placed the items
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local trade_inv = minetest.get_inventory({type="detached", name="yl_speak_up_player_"..pname})
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-- fields.abort_trade_simple can be ignored as it is similar to ESC
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local pay = trade_inv:get_stack("setup", 1)
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local buy = trade_inv:get_stack("setup", 2)
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-- store the new trade
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if(fields.store_trade_simple) then
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local error_msg = ""
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-- check for error conditions
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if(pay:is_empty()) then
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error_msg = "What shall the customer pay?\nWe don't give away stuff for free here!"
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elseif(buy:is_empty()) then
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error_msg = "What shall your NPC sell?\nCustomers won't pay for nothing!"
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elseif(pay:get_wear() > 0 or buy:get_wear() > 0) then
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error_msg = "Selling used items is not possible."
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elseif(not(minetest.registered_items[ pay:get_name() ])
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or not(minetest.registered_items[ buy:get_name() ])) then
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error_msg = "Unkown items cannot be traded."
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elseif(pay:get_name() == buy:get_name()) then
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error_msg = "Selling *and* buying the same item\nat the same time makes no sense."
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else
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-- TODO: *can* we store the trade?
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-- TODO no trade stored for that option yet?
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error_msg = "So far so good!"
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end
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-- show error message (that leads back to this formspec)
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if(error_msg) then
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minetest.show_formspec(pname, "yl_speak_up:add_trade_simple",
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"size[6,2]"..
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"label[0.2,0.5;"..error_msg.."]"..
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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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end
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-- give the items back to the player (he took them from his inventory and had no
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-- real chance to put them elsewhere - so there really ought to be room enough)
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local player_inv = player:get_inventory()
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if( 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("setup", 1, "")
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end
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if( player_inv:room_for_item("main", buy)) then
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player_inv:add_item("main", buy)
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trade_inv:set_stack("setup", 2, "")
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end
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-- TODO: or show the trade we just stored directly?
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-- ..and go back to the edit options formspec
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minetest.show_formspec(pname, "yl_speak_up:edit_option_dialog",
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yl_speak_up.get_fs_edit_option_dialog(player, n_id, d_id, trade.o_id))
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end
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-- can this trade be made? called in allow_take
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yl_speak_up.can_trade_simple = function(player, count)
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@ -140,8 +222,9 @@ yl_speak_up.get_fs_trade_simple = function(player, player_gives, npc_gives)
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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(trade.n_id)})
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-- show edit button for the owner
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if(yl_speak_up.may_edit_npc(player, trade.n_id)) then
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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, trade.n_id)
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and (yl_speak_up.edit_mode[pname] == yl_speak_up.speak_to[pname].n_id)) then
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formspec = formspec..
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"button[0.2,1.6;0.8,0.9;edit_trade_simple;Edit]"..
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"tooltip[edit_trade_simple;Edit this trade. You can do so only "..
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@ -242,6 +325,23 @@ minetest.register_on_joinplayer(function(player, last_login)
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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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if(stack:get_wear() > 0) then
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minetest.chat_send_player(player:get_player_name(),
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"Your NPC accepts only undammaged items. "..
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"Trading dammaged items would be unfair.")
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return 0
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end
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-- items with metadata cannot be traded
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if(yl_speak_up.check_stack_has_meta(player, stack)) then
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minetest.chat_send_player(player:get_player_name(),
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"Your NPC cannot sell items that contain "..
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"additional (meta-) data.")
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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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allow_take = function(inv, listname, index, stack, player)
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