default settings have to be global or pipeworks can't see them

(duh!)  confined them to pipeworks.{} table.

default_settings.txt

@@ -1,18 +1,18 @@
 -- Various settings
 
-local enable_pipes = true
-local enable_autocrafter = true
-local enable_deployer = true
-local enable_node_breaker = true
-local enable_teleport_tube = true
-local enable_pipe_devices = true
-local enable_redefines = true
-local enable_mese_tube = true
-local enable_detector_tube = true
-local enable_conductor_tube = true
-local enable_accelerator_tube = true
-local enable_crossing_tube = true
-local enable_sand_tube = true
-local enable_mese_sand_tube = true
-local enable_one_way_tube = true
-local CYCLIC = true
+pipeworks.enable_pipes = true
+pipeworks.enable_autocrafter = true
+pipeworks.enable_deployer = true
+pipeworks.enable_node_breaker = true
+pipeworks.enable_teleport_tube = true
+pipeworks.enable_pipe_devices = true
+pipeworks.enable_redefines = true
+pipeworks.enable_mese_tube = true
+pipeworks.enable_detector_tube = true
+pipeworks.enable_conductor_tube = true
+pipeworks.enable_accelerator_tube = true
+pipeworks.enable_crossing_tube = true
+pipeworks.enable_sand_tube = true
+pipeworks.enable_mese_sand_tube = true
+pipeworks.enable_one_way_tube = true
+pipeworks.enable_cyclic_mode = true

init.lua

@@ -126,13 +126,13 @@ local rules_all = {{x=0, y=0, z=1},{x=0, y=0, z=-1},{x=1, y=0, z=0},{x=-1, y=0,
 		{x=0, y=1, z=1},{x=0, y=1, z=-1},{x=1, y=1, z=0},{x=-1, y=1, z=0},
 		{x=0, y=-1, z=1},{x=0, y=-1, z=-1},{x=1, y=-1, z=0},{x=-1, y=-1, z=0},
 		{x=0, y=1, z=0}, {x=0, y=-1, z=0}}
-if enable_pipes then dofile(pipeworks.modpath.."/pipes.lua") end
-if enable_teleport_tube then dofile(pipeworks.modpath.."/teleport_tube.lua") end
-if enable_pipe_devices then dofile(pipeworks.modpath.."/devices.lua") end
-if enable_redefines then dofile(pipeworks.modpath.."/compat.lua") end
-if enable_autocrafter then dofile(pipeworks.modpath.."/autocrafter.lua") end
-if enable_deployer then dofile(pipeworks.modpath.."/deployer.lua") end
-if enable_node_breaker then dofile(pipeworks.modpath.."/node_breaker.lua") end
+if pipeworks.enable_pipes then dofile(pipeworks.modpath.."/pipes.lua") end
+if pipeworks.enable_teleport_tube then dofile(pipeworks.modpath.."/teleport_tube.lua") end
+if pipeworks.enable_pipe_devices then dofile(pipeworks.modpath.."/devices.lua") end
+if pipeworks.enable_redefines then dofile(pipeworks.modpath.."/compat.lua") end
+if pipeworks.enable_autocrafter then dofile(pipeworks.modpath.."/autocrafter.lua") end
+if pipeworks.enable_deployer then dofile(pipeworks.modpath.."/deployer.lua") end
+if pipeworks.enable_node_breaker then dofile(pipeworks.modpath.."/node_breaker.lua") end
 
 minetest.register_alias("pipeworks:pipe", "pipeworks:pipe_110000_empty")
 

item_transport.lua

@@ -471,7 +471,7 @@ function go_next(pos,velocity,stack)
 					break
 				end
 			until false
-			if CYCLIC then
+			if pipeworks.enable_cyclic_mode then
 				meta:set_int("tubedir",n)
 			end
 			velocity.x=tubes[n].vect.x*vel.speed
@@ -492,7 +492,7 @@ function go_next(pos,velocity,stack)
 				break
 			end
 		until false
-		if CYCLIC then
+		if pipeworks.enable_cyclic_mode then
 			meta:set_int("tubedir",n)
 		end
 		velocity.x=chests[n].vect.x*speed

tubes.lua

@@ -223,7 +223,7 @@ local mese_end_textures={"pipeworks_mese_tube_end.png","pipeworks_mese_tube_end.
 local mese_short_texture="pipeworks_mese_tube_short.png"
 local mese_inv_texture="pipeworks_mese_tube_inv.png"
 
-if enable_mese_tube then
+if pipeworks.enable_mese_tube then
 	pipeworks.register_tube("pipeworks:mese_tube","Mese pneumatic tube segment",mese_plain_textures,mese_noctr_textures,
 		mese_end_textures,mese_short_texture,mese_inv_texture,
 		{tube={can_go=function(pos,node,velocity,stack)
@@ -327,7 +327,7 @@ end
 	local mesecons_rules={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=1,y=0,z=0},{x=-1,y=0,z=0},{x=0,y=1,z=0},{x=0,y=-1,z=0}}
 
 
-if enable_detector_tube then
+if pipeworks.enable_detector_tube then
 
 	local detector_plain_textures={"pipeworks_detector_tube_plain.png","pipeworks_detector_tube_plain.png","pipeworks_detector_tube_plain.png",
 			"pipeworks_detector_tube_plain.png","pipeworks_detector_tube_plain.png","pipeworks_detector_tube_plain.png"}
@@ -395,7 +395,7 @@ local conductor_on_noctr_textures={"pipeworks_conductor_tube_on_noctr.png","pipe
 local conductor_on_end_textures={"pipeworks_conductor_tube_on_end.png","pipeworks_conductor_tube_on_end.png","pipeworks_conductor_tube_on_end.png",
 		"pipeworks_conductor_tube_on_end.png","pipeworks_conductor_tube_on_end.png","pipeworks_conductor_tube_on_end.png"}
 
-if enable_conductor_tube then
+if pipeworks.enable_conductor_tube then
 	pipeworks.register_tube("pipeworks:conductor_tube_off","Conductor tube segment",conductor_plain_textures,conductor_noctr_textures,
 		conductor_end_textures,conductor_short_texture,conductor_inv_texture,
 		{groups={mesecon=2},
@@ -423,7 +423,7 @@ local accelerator_end_textures={"pipeworks_accelerator_tube_end.png","pipeworks_
 local accelerator_short_texture="pipeworks_accelerator_tube_short.png"
 local accelerator_inv_texture="pipeworks_accelerator_tube_inv.png"
 
-if enable_accelerator_tube then
+if pipeworks.enable_accelerator_tube then
 	pipeworks.register_tube("pipeworks:accelerator_tube","Accelerator pneumatic tube segment",accelerator_plain_textures,
 			accelerator_noctr_textures,accelerator_end_textures,accelerator_short_texture,accelerator_inv_texture,
 			{tube={can_go=function(pos,node,velocity,stack)
@@ -433,7 +433,7 @@ if enable_accelerator_tube then
 	})
 end
 
-if enable_crossing_tube then
+if pipeworks.enable_crossing_tube then
 	pipeworks.register_tube("pipeworks:crossing_tube","Crossing tube segment",accelerator_plain_textures,
 			accelerator_noctr_textures,accelerator_end_textures,accelerator_short_texture,accelerator_inv_texture,
 			{tube={can_go=function(pos,node,velocity,stack)
@@ -451,7 +451,7 @@ local sand_end_textures={"pipeworks_sand_tube_end.png","pipeworks_sand_tube_end.
 local sand_short_texture="pipeworks_sand_tube_short.png"
 local sand_inv_texture="pipeworks_sand_tube_inv.png"
 
-if enable_sand_tube then
+if pipeworks.enable_sand_tube then
 	pipeworks.register_tube("pipeworks:sand_tube","Sand pneumatic tube segment",sand_plain_textures,sand_noctr_textures,sand_end_textures,
 			sand_short_texture,sand_inv_texture,
 			{groups={sand_tube=1}})
@@ -483,7 +483,7 @@ local mese_sand_end_textures={"pipeworks_mese_sand_tube_end.png","pipeworks_mese
 local mese_sand_short_texture="pipeworks_mese_sand_tube_short.png"
 local mese_sand_inv_texture="pipeworks_mese_sand_tube_inv.png"
 
-if enable_mese_sand_tube then
+if pipeworks.enable_mese_sand_tube then
 	pipeworks.register_tube("pipeworks:mese_sand_tube","Mese sand pneumatic tube segment",mese_sand_plain_textures,mese_sand_noctr_textures,mese_sand_end_textures,
 			mese_sand_short_texture,mese_sand_inv_texture,
 			{groups={mese_sand_tube=1},
@@ -552,7 +552,7 @@ local function facedir_to_right_dir(facedir)
 						z=topdir.x*backdir.y - backdir.x*topdir.y}
 end
 
-if enable_one_way_tube then
+if pipeworks.enable_one_way_tube then
 	minetest.register_node("pipeworks:one_way_tube", {
 		description = "One way tube",
 		tiles = {"pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_top.png", "pipeworks_one_way_tube_output.png",