add decorative tubes: one steel block embedded the other passing through an airtight pane

decorative_tubes.lua

@@ -0,0 +1,79 @@
+local straight = function(pos, node, velocity, stack) return {velocity} end
+
+minetest.register_node("pipeworks:steel_block_embedded_tube", {
+	description = "Airtight steelblock embedded tube",
+	tiles = {
+		"default_steel_block.png", "default_steel_block.png",
+		"default_steel_block.png", "default_steel_block.png",
+		"default_steel_block.png^pipeworks_tube_connection_metallic.png",
+		"default_steel_block.png^pipeworks_tube_connection_metallic.png",
+		},
+	paramtype = "light",
+	paramtype2 = "facedir",
+	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1},
+	legacy_facedir_simple = true,
+	sounds = default.node_sound_stone_defaults(),
+	tube = {
+		connect_sides = {front = 1, back = 1,},
+		priority = 50,
+		can_go = straight,
+		can_insert = function(pos, node, stack, direction)
+			local dir = minetest.facedir_to_dir(node.param2)
+			return vector.equals(dir, direction) or vector.equals(vector.multiply(dir, -1), direction)
+		end,
+	},
+})
+
+minetest.register_craft( {
+	output = "pipeworks:steel_block_embedded_tube 1",
+	recipe = {
+		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" },
+		{ "default:steel_ingot", "pipeworks:tube_1", "default:steel_ingot" },
+		{ "default:steel_ingot", "default:steel_ingot", "default:steel_ingot" }
+	},
+})
+
+local pane_box = {
+	type = "fixed",
+	fixed = {
+		{ -9/64, -9/64, -8/16, 9/64, 9/64, 8/16 }, -- tube
+		{ -8/16, -8/16, -1/16, 8/16, 8/16, 1/16 } -- pane
+	}
+}
+minetest.register_node("pipeworks:steel_pane_embedded_tube", {
+	drawtype = "nodebox",
+	description = "Airtight panel embedded tube ",
+	tiles = {
+		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
+		"pipeworks_pane_embedded_tube_sides.png^[transformR90",
+		"pipeworks_pane_embedded_tube_sides.png",
+		"pipeworks_pane_embedded_tube_sides.png",
+		"pipeworks_pane_embedded_tube_ends.png", "pipeworks_pane_embedded_tube_ends.png",
+		},
+	node_box = pane_box,
+	selection_box = pane_box,
+	collision_box = pane_box,
+	paramtype = "light",
+	paramtype2 = "facedir",
+	groups = {cracky=1, oddly_breakable_by_hand = 1, tubedevice = 1},
+	legacy_facedir_simple = true,
+	sounds = default.node_sound_stone_defaults(),
+	tube = {
+		connect_sides = {front = 1, back = 1,},
+		priority = 50,
+		can_go = straight,
+		can_insert = function(pos, node, stack, direction)
+			local dir = minetest.facedir_to_dir(node.param2)
+			return vector.equals(dir, direction) or vector.equals(vector.multiply(dir, -1), direction)
+		end,
+	},
+})
+
+minetest.register_craft( {
+	output = "pipeworks:steel_pane_embedded_tube 1",
+	recipe = {
+		{ "", "pipeworks:tube_1t", "" },
+		{ "default:steel_ingot", "pipeworks:tube_1", "default:steel_ingot" },
+		{ "", "pipeworks:tube_1", "" }
+	},
+})

init.lua

@@ -120,6 +120,7 @@ dofile(pipeworks.modpath.."/routing_tubes.lua")
 dofile(pipeworks.modpath.."/sorting_tubes.lua")
 dofile(pipeworks.modpath.."/vacuum_tubes.lua")
 dofile(pipeworks.modpath.."/signal_tubes.lua")
+dofile(pipeworks.modpath.."/decorative_tubes.lua")
 dofile(pipeworks.modpath.."/filter-injector.lua")
 dofile(pipeworks.modpath.."/trashcan.lua")
 dofile(pipeworks.modpath.."/wielder.lua")