[Solved] Trying to add a group for an existing node

[yawin]

Hello! I'm trying to add a group to an existing node (without overwriting the groups I already have) and the only way I can think of is this:
minetest.override_item("default:stone", {
groups.magical_tier1 = 1,
})
But it does not work. Does anyone comes up with something?

[duane]

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

-- Modify a node to add a group
function minetest.add_group(node, groups)
   local def = minetest.registered_items[node]
   if not def then
      return false
   end
   local def_groups = def.groups or {}
   for group, value in pairs(groups) do
      if value ~= 0 then
         def_groups[group] = value
      else
         def_groups[group] = nil
      end
   end
   minetest.override_item(node, {groups = def_groups})
   return true
end


From Valleys Mapgen (GPL3).

[kaeza]

Please see my comments here.

[yawin]

Please see my comments here.

Oh!! Lot of thanks!