forked from your-land-mirror/yl_speak_up
introduced privs for npc
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Sokomine
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README.md
22
README.md
@ -13,6 +13,12 @@ Chat commands
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/npc_talk_debug Allows to debug dialogs.
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/npc_talk_privs grant, revoke or list the privs of NPC. NPC need privs for
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some dangerous things like executing lua code. Examples:
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/npc_talk_privs list lists the privs of all NPC
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/npc_talk_privs grant n_3 effect_exec_lua
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grants NPC n_3 the right to execute
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lua code as an effect/result
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Terminology
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===========
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@ -65,6 +71,20 @@ npc_master allows players to edit *any* NPC supported by this mod.
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code without restrictions.
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Only grant this to staff members you really trust.
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NPC can have privs as well. The NPC...
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precon_exec_lua ..is allowed to excecute lua code as a precondition
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effect_exec_lua ..is allowed to execute lua code as an effect
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effect_give_item ..can give items to the player, created out of thin air
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effect_take_item ..can accept and destroy items given to it by a player
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effect_move_player ..can move the player to another position
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Tools
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=====
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There are diffrent staffs for diffrent functionality:
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@ -207,6 +227,8 @@ take a look at
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In order to add custom functions, you need to be able to edit that file or
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execute Lua code on the server.
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NPC may need extra privs for some actions.
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Alternate Text
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==============
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Sometimes you may encounter a situation where your NPC ought to answer to
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@ -307,12 +307,18 @@ yl_speak_up.execute_effect = function(player, n_id, o_id, r)
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return true
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elseif(r.r_type == "function") then
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-- this can only be set and edited with the staff
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if(not(yl_speak_up.npc_has_priv(n_id, "effect_exec_lua"))) then
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return false
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end
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return yl_speak_up.eval_and_execute_function(player, r, "r_")
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-- this can only be set and edited with the staff
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elseif(r.r_type == "give_item") then
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if(not(r.r_value)) then
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return false
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end
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if(not(yl_speak_up.npc_has_priv(n_id, "effect_give_item"))) then
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return false
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end
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local item = ItemStack(r.r_value)
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if(not(minetest.registered_items[item:get_name()])) then
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yl_speak_up.debug_msg(player, n_id, o_id, tostring(r.r_id).." "..
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@ -328,6 +334,9 @@ yl_speak_up.execute_effect = function(player, n_id, o_id, r)
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return true
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-- this can only be set and edited with the staff
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elseif(r.r_type == "take_item") then
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if(not(yl_speak_up.npc_has_priv(n_id, "effect_take_item"))) then
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return false
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end
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if(not(r.r_value)) then
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return false
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end
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@ -346,6 +355,9 @@ yl_speak_up.execute_effect = function(player, n_id, o_id, r)
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return true
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-- this can only be set and edited with the staff
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elseif(r.r_type == "move") then
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if(not(yl_speak_up.npc_has_priv(n_id, "effect_move_player"))) then
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return false
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end
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-- copeid/moved here from AliasAlreadyTakens code in functions.lua
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local target_pos = nil
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local target_pos_valid = false
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@ -87,6 +87,9 @@ yl_speak_up.eval_precondition = function(player, n_id, p, other_options_true_or_
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-- a precondition set by using the staff; kept for compatibility
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return true
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elseif(p.p_type == "function") then
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if(not(yl_speak_up.npc_has_priv(n_id, "precon_exec_lua"))) then
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return false
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end
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-- a precondition set by using the staff;
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-- extremly powerful (executes any lua code)
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return yl_speak_up.eval_and_execute_function(player, p, "p_")
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142
privs.lua
142
privs.lua
@ -1,23 +1,159 @@
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-- the privs players need some privs
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-- npc_talk_owner is required to set up an NPC;
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-- npc_talk_master allows to edit NPC of other players;
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-- npc_master allows to set dangerous commands like execute lua code
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local npc_master_priv_definition = {
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description="Can use the staffs to command NPCs",
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give_to_singleplayer = false,
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give_to_admin = true,
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}
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minetest.register_privilege("npc_master", npc_master_priv_definition)
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local npc_talk_owner_priv_definition = {
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description="Can edit the dialogs of his/her own NPCs",
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give_to_singleplayer = false,
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give_to_admin = true,
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}
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minetest.register_privilege("npc_talk_owner", npc_talk_owner_priv_definition)
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local npc_talk_master_priv_definition = {
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description="Can edit the dialogs of NPCs independent of owner",
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give_to_singleplayer = false,
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give_to_admin = true,
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}
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minetest.register_privilege("npc_talk_master", npc_talk_master_priv_definition)
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-- NPC also need privs to execute more dangerous commands
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-- this table will hold the actual privs in the form of
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-- indices of the form t[<npc_name>][<priv_name>] = True
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yl_speak_up.npc_priv_table = {}
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-- where shall the privs be stored so that they will be available after server restart?
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yl_speak_up.npc_priv_path = minetest.get_worldpath().."/yl_speak_up_npc_privs.data"
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-- these are deemed dangerous and checked
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yl_speak_up.npc_priv_names = {
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"precon_exec_lua",
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"effect_exec_lua", "effect_give_item", "effect_take_item", "effect_move_player",
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}
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yl_speak_up.npc_has_priv = function(n_id, priv_name)
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-- fallback: disallow
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if(not(n_id) or not(priv_name)) then
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return false
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end
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if(not(yl_speak_up.npc_priv_table[n_id])
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or not(yl_speak_up.npc_priv_table[n_id][priv_name])) then
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minetest.log(
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"action",
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"[MOD] yl_speak_up: NPC with ID "..tostring(n_id)..
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" was denied the NPC priv "..tostring(priv_name)..".")
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return false
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end
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return true
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end
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yl_speak_up.npc_privs_load = function()
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local file,err = io.open( yl_speak_up.npc_priv_path, "rb")
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if (file == nil) then
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yl_speak_up.npc_priv_table = {}
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return
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end
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local data = file:read("*all")
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file:close()
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yl_speak_up.npc_priv_table = minetest.deserialize(data)
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end
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yl_speak_up.npc_privs_store = function()
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local file,err = io.open( yl_speak_up.npc_priv_path, "wb")
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if (file == nil) then
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return
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end
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file:write(minetest.serialize(yl_speak_up.npc_priv_table))
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file:close()
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end
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-- a chat command to grant or deny or disallow npc these privs;
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-- it is not checked if the NPC exists
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minetest.register_chatcommand( 'npc_talk_privs', {
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description = "Grants or revokes the privilege <priv> to the "..
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"yl_speak_up-NPC with the ID <n_id>.\n"..
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"Call: [grant|revoke] <n_id> <priv>\n"..
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"If called with parameter [list], all granted privs for all NPC are shown.",
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privs = {privs = true},
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func = function(pname, param)
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if(not(param) or param == "") then
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minetest.chat_send_player(pname,
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"Usage: [grant|revoke|list] <n_id> <priv>\n"..
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"The following privilege exist:\n\t"..
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table.concat(yl_speak_up.npc_priv_names, ", ")..".")
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return
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end
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local parts = string.split(param, " ")
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if(parts[1] == "list") then
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local text = "This list contains the privs of each NPC in the form of "..
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"<npc_name>: <list of privs>"
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-- create list of all existing extra privs for npc
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for n_id, v in pairs(yl_speak_up.npc_priv_table) do
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text = text..".\n"..tostring(n_id)..":"
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local found = false
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for priv, w in pairs(v) do
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text = text.." "..tostring(priv)
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found = true
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end
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if(not(found)) then
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text = text.." <none>"
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end
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end
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minetest.chat_send_player(pname, text..".")
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return
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end
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if((parts[1] ~= "grant" and parts[1] ~= "revoke") or #parts ~= 3) then
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minetest.chat_send_player(pname, "Usage: [grant|revoke] <n_id> <priv>")
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return
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end
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local command = parts[1]
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local n_id = parts[2]
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local priv = parts[3]
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if(table.indexof(yl_speak_up.npc_priv_names, priv) == -1) then
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minetest.chat_send_player(pname,
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"Unknown priv \""..tostring(priv).."\".\n"..
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"The following privilege exist:\n\t"..
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table.concat(yl_speak_up.npc_priv_names, ", ")..".")
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return
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end
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if(command == "grant" and not(yl_speak_up.npc_priv_table[n_id])) then
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yl_speak_up.npc_priv_table[n_id] = {}
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end
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if(command == "grant") then
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yl_speak_up.npc_priv_table[n_id][priv] = true
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elseif(yl_speak_up.npc_priv_table[n_id]) then
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yl_speak_up.npc_priv_table[n_id][priv] = nil
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end
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local text = "New privs of NPC "..tostring(n_id)..":"
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local found = false
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if(yl_speak_up.npc_priv_table[n_id]) then
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for k, v in pairs(yl_speak_up.npc_priv_table[n_id]) do
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text = text.." "..tostring(k)
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found = true
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end
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end
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if(not(found)) then
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text = text.." <none>"
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yl_speak_up.npc_priv_table[n_id] = nil
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end
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minetest.chat_send_player(pname, text..".")
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yl_speak_up.npc_privs_store()
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end
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})
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-- when the game is started: load the npc privs
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yl_speak_up.npc_privs_load()
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