Make it use tubelib2 for electric cables.

crafting.lua

@@ -49,6 +49,17 @@ if minetest.get_modpath("hades_technic") then
   items.transformer = "hades_technic:lv_transformer"
 end
 
+minetest.register_craft({
+    output = "power_generators:electric_cableS 6",
+    recipe = {
+      {"basic_materials:plastic_sheet", "", ""},
+      {"", "basic_materials:copper_wire", ""},
+      {"", "", "basic_materials:plastic_sheet"},
+    },
+    replacements = {{items.copper_wire,items.empty_spool}},
+  })
+
+
 minetest.register_craft({
     output = "power_generators:combustion_engine_piston",
     recipe = {

electric_network.lua

@@ -0,0 +1,107 @@
+local S = power_generators.translator;
+
+-- for lazy programmers
+local S2P = minetest.string_to_pos
+local P2S = minetest.pos_to_string
+
+local Cable = tubelib2.Tube:new({
+  dirs_to_check = {1,2,3,4,5,6},
+  max_tube_length = 128, 
+  show_infotext = false,
+  tube_type = "powgencable",
+  primary_node_names = {"power_generators:electric_cableS", "power_generators:electric_cableA",
+    },
+  after_place_tube = function(pos, param2, tube_type, num_tubes)
+    minetest.swap_node(pos, {name = "power_generators:electric_cable"..tube_type, param2 = param2})
+  end,
+})
+
+power_generators.electric_cable = Cable
+
+local function gen_on_blast(drop)
+  return function(pos, intensity)
+    if intensity < 0.5 then
+      return {}
+    end
+    local node = minetest.get_node(pos)
+    minetest.remove_node(pos)
+    Cable:after_dig_tube(pos, node)
+    return {drop}
+  end
+end
+
+minetest.register_node("power_generators:electric_cableS", {
+  description = S("PG Electric Cable"),
+  tiles = {
+    -- up, down, right, left, back, front
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable_end.png",
+    "power_generators_electric_cable_end.png",
+  },
+  paramtype2 = "facedir", -- important!
+  drawtype = "nodebox",
+  node_box = {
+    type = "fixed",
+    fixed = {
+      {-1/16, -1/16, -1/2,  1/16, 1/16, 1/2},
+    },
+  },
+  paramtype = "light",
+  sunlight_propagates = true,
+  is_ground_content = false,
+  groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 3, power_generator_cable = 1},
+  sounds = default.node_sound_defaults(),
+  
+  after_place_node = function(pos, placer, itemstack, pointed_thing)
+    if not Cable:after_place_tube(pos, placer, pointed_thing) then
+      minetest.remove_node(pos)
+      return true
+    end
+    return false
+  end,
+  after_dig_node = function(pos, oldnode, oldmetadata, digger)
+    Cable:after_dig_tube(pos, oldnode, oldmetadata)
+  end,
+  on_rotate = screwdriver.disallow, -- important!
+  on_blast = gen_on_blast("power_generators:electric_cableS"),
+})
+
+minetest.register_node("power_generators:electric_cableA", {
+  description = S("PG Electric Cable"),
+  tiles = {
+    -- up, down, right, left, back, front
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable_end.png",
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable.png",
+    "power_generators_electric_cable_end.png",
+  },
+  
+  paramtype2 = "facedir", -- important!
+  drawtype = "nodebox",
+  node_box = {
+    type = "fixed",
+    fixed = {
+      {-1/16, -1/2, -1/16,  1/16, 1/16,  1/16},
+      {-1/16, -1/16, -1/2,  1/16, 1/16, -1/16},
+    },
+  },
+  paramtype = "light",
+  sunlight_propagates = true,
+  is_ground_content = false,
+  groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 3, 
+      techage_trowel = 1, not_in_creative_inventory = 1},
+  sounds = default.node_sound_defaults(),
+  drop = "power_generators:electric_cableS",
+  
+  after_dig_node = function(pos, oldnode, oldmetadata, digger)
+    Cable:after_dig_tube(pos, oldnode)
+  end,
+  on_rotate = screwdriver.disallow, -- important!
+  on_blast = gen_on_blast("power_generators:electric_cableS"),
+})
+

emergency_generator.lua

@@ -6,6 +6,7 @@
 -- Initial Functions --
 -----------------------
 local S = power_generators.translator;
+local Cable = power_generators.electric_cable
 
 power_generators.emergency_generator = appliances.appliance:new(
     {
@@ -176,6 +177,11 @@ local node_active = {
 
 emergency_generator:register_nodes(node_def, node_inactive, node_active)
 
+Cable:add_secondary_node_names({emergency_generator.node_name_active, emergency_generator.node_name_inactive})
+--Cable:add_special_node_names({name})
+Cable:set_valid_sides(emergency_generator.node_name_active, {"R", "L", "F", "B"})
+Cable:set_valid_sides(emergency_generator.node_name_inactive, {"R", "L", "F", "B"})
+
 -------------------------
 -- Recipe Registration --
 -------------------------

functions.lua

@@ -1,13 +1,35 @@
 
+local Cable = power_generators.electric_cable
+
+local tubelib2_side = {
+    right = "R",
+    left = "L",
+    front = "F",
+    back = "B",
+    top = "U",
+    bottom = "D",
+  }
+
+local function get_connected_node(pos, side)
+  local _,node = Cable:get_node(pos)
+  local dir = tubelib2.side_to_dir(side, node.param2)
+  local epos, edir = Cable:get_connected_node_pos(pos, dir)
+  if not (epos and edir) then
+    return nil
+  end
+  return epos
+end
+
 function power_generators.update_generator_supply(self, pos, use_usage)
   local side_data = {};
   local total_demand = 0;
   for _,side in pairs(self.power_connect_sides) do
-    local side_pos = appliances.get_side_pos(pos, side);
-    local side_node = minetest.get_node(side_pos);
-    local side_def = minetest.registered_nodes[side_node.name];
-    if side_def and side_def._generator_connect_sides then
-      if appliances.is_connected_to(side_pos, pos, side_def._generator_connect_sides) then
+    local side_pos = get_connected_node(pos, tubelib2_side[side])
+    if side_pos then
+      local side_node = minetest.get_node(side_pos);
+      print(dump(side_node))
+      local side_def = minetest.registered_nodes[side_node.name];
+      if side_def and side_def._generator_connect_sides then
         local meta = minetest.get_meta(side_pos);
         local demand = meta:get_int("generator_demand") or 0
         if (demand>0) then

init.lua

@@ -5,7 +5,9 @@ power_generators = {
 
 local modpath = minetest.get_modpath(minetest.get_current_modname())
 
+dofile(modpath.."/electric_network.lua")
 dofile(modpath.."/power_supply.lua")
+--dofile(modpath.."/electric_junction.lua")
 
 appliances.register_craft_type("power_generators_fuel", {
     description = "Generator fuel",

mod.conf

@@ -1,5 +1,5 @@
 name = power_generators
 title = Add some power generators
 description = Add power generators based on appliances API.
-depends = appliances
+depends = appliances, tubelib2, screwdriver
 optional_depends = default, biofuel, basic_materials, hades_sounds, hades_biofuel, hades_extramaterials, sounds

power_supply.lua

@@ -1,6 +1,17 @@
 
 -- register power supply to power generators
 
+local Cable = power_generators.electric_cable
+
+local tubelib2_side = {
+    right = "R",
+    left = "L",
+    front = "F",
+    back = "B",
+    top = "U",
+    bottom = "D",
+  }
+
 local power_supply = {
     is_powered = function (self, power_data, pos, meta)
         local eu_input = meta:get_int("generator_input");
@@ -21,6 +32,21 @@ local power_supply = {
         node_def.groups.generator_powered = 1;
         node_def._generator_connect_sides = self.power_connect_sides;
       end,
+    after_register_node = function(self, power_data)
+        local names = {self.node_name_active, self.node_name_inactive}
+        if self.node_name_waiting then
+          table.insert(names, self.node_name_waiting)
+        end
+        local sides = {}
+        for _,side in pairs(self.power_connect_sides) do
+          table.insert(sides, tubelib2_side[side])
+        end
+        for _,name in pairs(names) do
+          Cable:add_secondary_node_names({name})
+          --Cable:add_special_node_names({name})
+          Cable:set_valid_sides(name, sides)
+        end
+      end,
   }
 appliances.add_power_supply("power_generators_power", power_supply)