Add not_blocking_trains = 1 to visually small nodes

camera.lua

@@ -89,7 +89,7 @@ minetest.register_node("digistuff:camera", {
 		}
 	},
 	sounds = default and default.node_sound_stone_defaults(),
-	groups = {cracky = 2},
+	groups = {cracky = 2, not_blocking_trains = 1},
 	is_ground_content = false,
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)

conductors.lua

@@ -186,7 +186,7 @@ minetest.register_node("digistuff:vertical_tap", {
 	description = "Vertical Digiline Intermediate Connection",
 	tiles = {"digistuff_digiline_full.png"},
 	paramtype = "light",
-	groups = {dig_immediate = 3,vertical_digiline = 1,},
+	groups = {dig_immediate = 3,vertical_digiline = 1,not_blocking_trains = 1},
 	is_ground_content = false,
 	drawtype = "nodebox",
 	node_box = {
@@ -223,7 +223,7 @@ minetest.register_node("digistuff:vertical_bottom", {
 	description = "Vertical Digiline",
 	tiles = {"digistuff_digiline_full.png"},
 	paramtype = "light",
-	groups = {dig_immediate = 3,vertical_digiline = 1,},
+	groups = {dig_immediate = 3,vertical_digiline = 1,not_blocking_trains = 1},
 	is_ground_content = false,
 	drawtype = "nodebox",
 	node_box = {
@@ -260,7 +260,7 @@ minetest.register_node("digistuff:vertical_middle", {
 	description = "Vertical Digiline (middle - you hacker you!)",
 	tiles = {"digistuff_digiline_full.png"},
 	paramtype = "light",
-	groups = {dig_immediate = 3,not_in_creative_inventory = 1,vertical_digiline = 1,},
+	groups = {dig_immediate = 3,not_in_creative_inventory = 1,vertical_digiline = 1,not_blocking_trains = 1},
 	drop = "digistuff:vertical_bottom",
 	is_ground_content = false,
 	walkable = false,
@@ -288,7 +288,7 @@ minetest.register_node("digistuff:vertical_top", {
 	description = "Vertical Digiline (top - you hacker you!)",
 	tiles = {"digistuff_digiline_full.png"},
 	paramtype = "light",
-	groups = {dig_immediate = 3,not_in_creative_inventory = 1,vertical_digiline = 1,},
+	groups = {dig_immediate = 3,not_in_creative_inventory = 1,vertical_digiline = 1,not_blocking_trains = 1},
 	drop = "digistuff:vertical_bottom",
 	is_ground_content = false,
 	drawtype = "nodebox",

gpu.lua

@@ -935,7 +935,7 @@ end
 
 minetest.register_node("digistuff:gpu", {
 	description = "Digilines 2D Graphics Processor",
-	groups = { cracky = 3 },
+	groups = { cracky = 3, not_blocking_trains = 1 },
 	is_ground_content = false,
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)

ioexpander.lua

@@ -103,11 +103,22 @@ local ioexp_handle_mesecons = function(pos,_,rule,state)
 	ioexp_digiline_send(pos)
 end
 
+local groups_base = {
+	cracky = 3,
+	not_blocking_trains = 1,
+}
+
 for i=0,15,1 do
 	local offstate = i == 0
+
+	local groups = table.copy(groups_base)
+	if not offstate then
+		groups.not_in_creative_inventory = 1
+	end
+
 	minetest.register_node("digistuff:ioexpander_"..i, {
 		description = offstate and "Digilines I/O Expander" or string.format("Digilines I/O Expander (on state %X - you hacker you!)",i),
-		groups = offstate and {cracky = 3,} or {cracky = 3,not_in_creative_inventory = 1,},
+		groups = groups,
 		is_ground_content = false,
 		on_construct = function(pos)
 			local meta = minetest.get_meta(pos)

light.lua

@@ -1,5 +1,16 @@
+local groups_base = {
+	cracky = 1,
+	not_blocking_trains = 1,
+}
+
 for i=0,14,1 do
 	local mult = 255 - ((14-i)*12)
+
+	local groups = table.copy(groups_base)
+	if i > 0 then
+		groups.not_in_creative_inventory = 1
+	end
+
 	minetest.register_node("digistuff:light_"..i, {
 		drop = "digistuff:light_0",
 		description = "Digilines Dimmable Light"..(i > 0 and " (on state - you hacker you!)" or ""),
@@ -14,7 +25,7 @@ for i=0,14,1 do
 				}
 		},
 		_digistuff_channelcopier_fieldname = "channel",
-		groups = i > 0 and {cracky = 1, not_in_creative_inventory = 1} or {cracky = 1},
+		groups = groups,
 		is_ground_content = false,
 		light_source = i,
 		color = {r = mult,g = mult,b = mult},

memory.lua

@@ -1,6 +1,6 @@
 minetest.register_node("digistuff:ram", {
 	description = "Digilines 128Kbit SRAM",
-	groups = {cracky=3},
+	groups = {cracky=3,not_blocking_trains = 1},
 	is_ground_content = false,
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)

nic.lua

@@ -1,7 +1,7 @@
 local http = ...
 minetest.register_node("digistuff:nic", {
 	description = "Digilines NIC",
-	groups = {cracky=3},
+	groups = {cracky=3,not_blocking_trains = 1},
 	is_ground_content = false,
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)

panel.lua

@@ -108,7 +108,7 @@ end
 
 minetest.register_node("digistuff:panel", {
 	description = "Digilines Control Panel",
-	groups = {cracky=3},
+	groups = {cracky=3,not_blocking_trains = 1},
 	is_ground_content = false,
 	on_construct = function(pos)
 		local helpmsg = "Please set a channel."

sillystuff.lua

@@ -17,7 +17,7 @@ end
 
 minetest.register_node("digistuff:heatsink", {
 	description = "Heatsink (decorative)",
-	groups = {cracky=3},
+	groups = {cracky=3,not_blocking_trains = 1},
 	is_ground_content = false,
 	tiles = {
 		"digistuff_piezo_sides.png"
@@ -57,7 +57,7 @@ minetest.register_node("digistuff:heatsink", {
 minetest.register_node("digistuff:heatsink_onic", {
 	drop = "digistuff:heatsink",
 	description = "Heatsink (decorative, placed on IC - you hacker you!)",
-	groups = {cracky=3,not_in_creative_inventory=1,},
+	groups = {cracky=3,not_in_creative_inventory=1,not_blocking_trains = 1},
 	is_ground_content = false,
 	tiles = {
 		"digistuff_piezo_sides.png"

timer.lua

@@ -1,6 +1,6 @@
 minetest.register_node("digistuff:timer", {
 	description = "Digilines Timer",
-	groups = {cracky=3},
+	groups = {cracky=3,not_blocking_trains = 1},
 	is_ground_content = false,
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)

touchscreen.lua

@@ -230,7 +230,7 @@ end
 
 minetest.register_node("digistuff:touchscreen", {
 	description = "Digilines Touchscreen",
-	groups = {cracky = 3},
+	groups = {cracky = 3, not_blocking_trains = 1},
 	is_ground_content = false,
 	tiles = {
 		"digistuff_panel_back.png",