Alloy furnace: Accept only unique ItemStacks from tubes (#523)

Serhiy Zahoriya

2020-01-11 1a45ad19d4fa627e147bd385665e37942f6147fb

 technic/machines/register/extractor_recipes.lua

@@ -15,6 +15,7 @@
   -- register recipes with the same crafting ratios as `dye` provides
   local dye_recipes = {
      {"technic:coal_dust",                 "dye:black 2"},
      {"default:blueberries",               "dye:violet 2"},
      {"default:grass_1",                   "dye:green 1"},
      {"default:dry_shrub",                 "dye:brown 1"},
      {"default:junglegrass",               "dye:green 2"},
@@ -36,13 +37,21 @@
   -- overwrite the existing crafting recipes
   local dyes = {"white", "red", "yellow", "blue", "violet", "orange"}
   for _, color in ipairs(dyes) do
      minetest.register_craft({
              type = "shapeless",
              output = "dye:"..color.." 1",
              recipe = {"group:flower,color_"..color},
      minetest.clear_craft({
         type = "shapeless",
         recipe = {"group:flower,color_"..color},
      })

      minetest.register_craft({
         type = "shapeless",
         output = "dye:"..color.." 1",
         recipe = {"group:flower,color_"..color},
      })
   end

   minetest.clear_craft({
      type = "shapeless",
      recipe = {"group:coal"},
   })
   minetest.register_craft({
      type = "shapeless",
      output = "dye:black 1",
@@ -50,6 +59,10 @@
   })

   if unifieddyes then
      minetest.clear_craft({
         type = "shapeless",
         recipe = {"default:cactus"},
      })
      minetest.register_craft({
         type = "shapeless",
         output = "dye:green 1",