Added alternative recipes, falling back on the default: items as they seem to be in the rest of the mod.

May need rebalancing though.

advtrains_interlocking/tcb_ts_ui.lua

@@ -120,13 +120,41 @@ minetest.register_node("advtrains_interlocking:tcb_node", {
 
 
 -- Crafting
+
+-- set some fallbacks
+local tcb_core = "default:mese_crystal"
+local tcb_secondary = "default:mese_crystal_fragment"
+
+--alternative recipe items
+--core
+if minetest.get_modpath("basic_materials") then
+	tcb_core = "basic_materials:ic"
+elseif minetest.get_modpath("technic") then
+	tcb_core = "technic:control_logic_unit"
+end
+--print("TCB Core: "..tcb_core)
+--secondary
+if minetest.get_modpath("mesecons") then
+	tcb_secondary = 'mesecons:wire_00000000_off'
+end
+--print("TCB Secondary: "..tcb_secondary)
+
 minetest.register_craft({
 	output = 'advtrains_interlocking:tcb_node 4',
 	recipe = {
-		{'mesecons:wire_00000000_off', 'basic_materials:ic', 'mesecons:wire_00000000_off'},
+		{tcb_secondary,tcb_core,tcb_secondary},
+		{'advtrains:dtrack_placer','','advtrains:dtrack_placer'}
 	},
+	--actually use track in the tcb recipe
+	replacements = {
+		{"advtrains:dtrack_placer","advtrains:dtrack_placer"},
+		{"advtrains:dtrack_placer","advtrains:dtrack_placer"},
+	}
 })
 
+--nil the temp crafting variables
+tcb_core= nil
+tcb_secondary = nil
 
 minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 	local pname = player:get_player_name()

advtrains_signals_ks/init.lua

@@ -270,11 +270,18 @@ minetest.register_craft({
 	},
 })
 
+local sign_material = "default:sign_wall_steel" --fallback
+if minetest.get_modpath("basic_materials") then
+	sign_material = "basic_materials:plastic_sheet"
+end
+--print("Sign Material: "..sign_material)
+
 minetest.register_craft({
 	output = "advtrains_signals_ks:sign_8_0 2",
 	recipe = {
-		{'basic_materials:plastic_sheet', 'dye:black'},
+		{sign_material, 'dye:black'},
 		{'default:stick', ''},
 		{'default:stick', ''},
 	},
 })
+sign_material = nil

advtrains_train_track/init.lua

@@ -298,15 +298,27 @@ advtrains.register_tracks("default", {
 	end
 				     }, advtrains.trackpresets.t_30deg_straightonly)
 
+-- mod-dependent crafts
+local loader_core = "default:mese_crystal"  --fallback
+if minetest.get_modpath("basic_materials") then
+	loader_core = "basic_materials:ic"
+elseif minetest.get_modpath("technic") then
+	loader_core = "technic:control_logic_unit"
+end
+--print("Loader Core: "..loader_core)
+
 minetest.register_craft({
 	type="shapeless",
 	output = 'advtrains:dtrack_load_placer',
 	recipe = {
 		"advtrains:dtrack_placer",
-		"basic_materials:ic",
+		loader_core,
 		"default:chest"
 	},
 })
+loader_core = nil --nil the crafting variable
+
+--craft between load/unload tracks
 minetest.register_craft({
 	type="shapeless",
 	output = 'advtrains:dtrack_unload_placer',