fence2 reg

function default.register_fence2(name, def)
   minetest.register_craft({
      output = name .. " 4",
      recipe = {
         { def.material, 'group:stick', def.material },
         { def.material, 'group:stick', def.material },
      }
   })

   local fence_texture = "default_fence_overlay.png^" .. def.image ..
         "^default_fence_overlay.png^[makealpha:255,126,126"
   -- Allow almost everything to be overridden
   local default_fields = {
      paramtype = "light",
      drawtype = "nodebox",
      node_box = {
         type = "connected",
         fixed = {{-1/8, -1/2, -1/8, 1/8, 1/2, 1/8}},
         -- connect_top =
         -- connect_bottom =
         connect_front = {{-1/16,3/16,-1/2,1/16,5/16,-1/8},
            {-1/16,-5/16,-1/2,1/16,-3/16,-1/8}},
         connect_left = {{-1/2,3/16,-1/16,-1/8,5/16,1/16},
            {-1/2,-5/16,-1/16,-1/8,-3/16,1/16}},
         connect_back = {{-1/16,3/16,1/8,1/16,5/16,1/2},
            {-1/16,-5/16,1/8,1/16,-3/16,1/2}},
         connect_right = {{1/8,3/16,-1/16,1/2,5/16,1/16},
            {1/8,-5/16,-1/16,1/2,-3/16,1/16}},
      },
      connects_to = {"group:fence", "group:wood", "group:tree"},
      inventory_image = def.image,
      wield_image = def.image,
      tiles = def.texture,
      sunlight_propagates = true,
      is_ground_content = false,
      groups = {},
   }
   for k, v in pairs(default_fields) do
      if not def[k] then
         def[k] = v
      end
   end

   -- Always add to the fence group, even if no group provided
   def.groups.fence = 1

   def.texture = nil
   def.material = nil

   minetest.register_node(name, def)
end