Getting a List of Currently Registered Items

[SegFault22]

I'm working on a mod, where it would be very helpful to be able to "get" (return, via function output) a list of the names (itemstrings) of all currently registered items. I'm working on a bit of code that can scan the list for items that conform to an existing naming convention, and register their material name in a list to be used when adding stuff made out of materials added by other mods.
For example, if another mod adds a material that doesn't exist in the mod, it would be detected by the sniffer and added to a list of materials, for which to register items such as ingots, plates, dust-piles, wires, rods, bolts, rounds, and such, and recipes using them to create those and other items. However, it would have to conform to an existing naming convention, such as "modname:item_ingot_(material name, such as "nichrome", "steel", etc)" or "modname:ingot_(material name)" or "modname:item_(material name)_ingot" - items detected that do not conform to such conventions would simply not be added to the list, and a text-output would be sent to the console, including the unknown item's name, inserted into a "please report to development for further compatibility"-message.

Is there any way, with the currently-existing api, to make the game return a list of registered items (in stackstring format, or a format that can be changed to or interpreted as stackstring), without making a script that checks all possible mod/item ids for existing things (which would consume far more resources than necessary), or patching the register code to output each registered item's stackstring to a list of items?

[rubenwardy]

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Code: Select all

keys = {}
for key, val in pairs(minetest.registered_items) do
      -- iterate through items, for example to add keys to a table
      table.insert(keys, key)
end

Also see Lua Patterns and string.split(key, ":").

[SegFault22]

Your phone or window isn't wide enough to display the code box. If it's a phone, try rotating it to landscape mode.

Code: Select all

keys = {}
for key, val in pairs(minetest.registered_items) do
      -- iterate through items, for example to add keys to a table
      table.insert(keys, key)
end

Also see Lua Patterns and string.split(key, ":").

Thank you, I did not know there was access to minetest.registered_items outside of the "C++ part of the engine". With this I will commence adding more of the significant planned features to my mod, and it is now much closer to being ready for official release

[Casimir]

This code writes a list of all items in the world directory. However, they are unsorted.

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Code: Select all

local function count_items()
   local number = 0
   local file = minetest.get_worldpath() .. "/items"
   local output = io.open(file, "w")
   for name, item in pairs(minetest.registered_items) do
      number = number + 1
      output:write(name.."\n")
   end
   io.close(output)
   print("There are "..number.." registered items.")
   minetest.chat_send_player("singleplayer", "There are "..number.." registered items.")
end

minetest.after(5, count_items)

[orwell]

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Code: Select all

core.register_chatcommand("ilist", {
   params = "[search]",
   description = "find item names or list all items",
   privs = {},
   func = function(name, param)
      --minetest.chat_send_player(name, "")
      local parami=""
      if param~=nil then
         parami=param
      end
      minetest.chat_send_player(name,"------------------------nodes")
      for n, i in pairs(core.registered_nodes) do
         if string.find(n, parami, 1, true) then
            minetest.chat_send_player(name, n)
         end
      end
      minetest.chat_send_player(name,"------------------------tools")
      for n, i in pairs(core.registered_tools) do
         if string.find(n, parami, 1, true) then
            minetest.chat_send_player(name, n)
         end
      end
      minetest.chat_send_player(name,"------------------------craftitems")
      for n, i in pairs(core.registered_craftitems) do
         if string.find(n, parami, 1, true) then --plain text search
            minetest.chat_send_player(name, n)
         end
      end

   end,

})

A chatcommand I wrote one day to list and search for item IDs. (searches for plain text and case-sensitive and prints to caller)