Epic/mods/hopper/init.lua

-- define global
hopper = {}

-- internationalization boilerplate
local MP = minetest.get_modpath(minetest.get_current_modname())
local S, NS = dofile(MP.."/intllib.lua")

if minetest.get_modpath("default") then
   hopper.formspec_bg = default.gui_bg .. default.gui_bg_img .. default.gui_slots
else
   hopper.formspec_bg = "bgcolor[#080808BB;true]" .. "listcolors[#00000069;#5A5A5A;#141318;#30434C;#FFF]"
end

dofile(MP.."/config.lua")
dofile(MP.."/api.lua")
dofile(MP.."/utility.lua")
dofile(MP.."/doc.lua")
dofile(MP.."/nodes/hoppers.lua")
dofile(MP.."/nodes/chute.lua")
dofile(MP.."/nodes/sorter.lua")
dofile(MP.."/nodes/trash.lua")
dofile(MP.."/abm.lua")

-------------------------------------------------------------------------------------------
-- Formspec handling

minetest.register_on_player_receive_fields(function(player, formname, fields)
   if "hopper_formspec:" == string.sub(formname, 1, 16) then
      local pos = minetest.string_to_pos(string.sub(formname, 17, -1))
      local meta = minetest.get_meta(pos)
      local eject_setting = meta:get_string("eject") == "true"
      local filter_all_setting = meta:get_string("filter_all") == "true"
      if fields.eject then
         if eject_setting then
            meta:set_string("eject", nil)
         else
            meta:set_string("eject", "true")
         end
      end
      if fields.filter_all then
         if filter_all_setting then
            meta:set_string("filter_all", nil)
         else
            meta:set_string("filter_all", "true")
         end
      end
   end
end)