diff --git a/robot.lua b/robot.lua
deleted file mode 100644
index af24528..0000000
--- a/robot.lua
+++ /dev/null
@@ -1,161 +0,0 @@
---[[
-
-	Hyperloop Mod
-	=============
-
-	Copyright (C) 2017 Joachim Stolberg
-
-	LGPLv2.1+
-	See LICENSE.txt for more information
-
-	History:
-	see init.lua
-
-]]--
-
-local function get_inventory_item(inv)
-	local stack = ItemStack("hyperloop:tube0")
-	local taken = inv:remove_item("src", stack)
-	return taken:get_count() == 1
-end
-
-local function get_inventory(pos)
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	local stack = ItemStack("hyperloop:tube0 99")
-	return inv:remove_item("src", stack)
-end
-
-local function set_inventory(pos, stack)
-	local meta = minetest.get_meta(pos)
-	local inv = meta:get_inventory()
-	inv:add_item("src", stack)
-	return inv
-end
-
-local function allow_metadata_inventory(pos, listname, index, stack, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return 0
-	end
-	return stack:get_count()
-end
-
-local function place_tube(pos, name, facedir, placer)
-	if minetest.is_protected(pos, placer:get_player_name()) then
-		hyperloop.chat(placer, "Area is protected!")
-		return false
-	end
-	node = minetest.get_node(pos)
-	if node.name ~= "air" and node.name ~= "default:water_source" and node.name ~= "default:water_flowing" then
-		return false
-	end
-	if hyperloop.scan_neighbours(pos) ~= 1 then
-		return false
-	end
-	minetest.add_node(pos, {name=name, param2=facedir})
-	minetest.registered_nodes[name].after_place_node(pos, placer, nil, nil)
-	return true
-end
-
-local function move_robot(pos, inv, facedir, placer)
-	if minetest.get_meta(pos):get_int("stopped") ~= 1 then
-		if get_inventory_item(inv) then
-			-- remve robot and replace through tube
-			local stack = get_inventory(pos)
-			minetest.remove_node(pos)
-			place_tube(pos, "hyperloop:tube1", facedir, placer)
-			-- place robot on the new position
-			pos = hyperloop.new_pos(pos, facedir, "1F", 0)
-			if place_tube(pos, "hyperloop:robot", facedir, placer) then
-				inv = set_inventory(pos, stack)
-				minetest.after(1, move_robot, pos, inv, facedir, placer)
-			else
-				pos = hyperloop.new_pos(pos, facedir, "1B", 0)
-				minetest.remove_node(pos)
-				place_tube(pos, "hyperloop:robot", facedir, placer)
-				stack:add_item("src", ItemStack("hyperloop:tube0"))
-				set_inventory(pos, stack)
-			end
-		end
-	end
-end
-
-local station_formspec =
-	"size[8,8]"..
-	"label[3,0;Hyperloop Tube Robot]" ..
-	"label[1,1.3;Hyperloop Tubes]" ..
-	"list[context;src;3,1;1,1;]"..
-	"button_exit[4,1;1,1;button;Start]"..
-	"list[current_player;main;0,4;8,4;]"..
-    "listring[context;src]"..
-    "listring[current_player;main]"
-
-minetest.register_node("hyperloop:robot", {
-	description = "Hyperloop Tube Robot",
-	tiles = {
-		-- up, down, right, left, back, front
-		"hyperloop_robot.png",
-		"hyperloop_robot.png",
-		"hyperloop_robot2.png",
-		"hyperloop_robot2.png",
-		"hyperloop_robot2.png",
-		"hyperloop_robot2.png",
-	},
-		
-	after_place_node = function(pos, placer, itemstack, pointed_thing)
-		local res, nodes = hyperloop.scan_neighbours(pos)
-		if res == 1 then        -- one neighbor available?
-			local dir = vector.subtract(pos, nodes[1].pos)
-			local facedir = minetest.dir_to_facedir(dir)
-			local meta = minetest.get_meta(pos)
-			meta:set_int("facedir", facedir)
-			meta:set_string("formspec", station_formspec)
-			local inv = meta:get_inventory()
-			inv:set_size('src', 1)
-		else
-			hyperloop.chat(player, "You can't start with a Robot block!")
-			local node = minetest.get_node(pos)
-			hyperloop.remove_node(pos, node)
-			return itemstack
-		end
-	end,
-	
-	on_receive_fields = function(pos, formname, fields, player)
-		if fields.button == nil then
-			return
-		end
-		local meta = minetest.get_meta(pos)
-		local inv = meta:get_inventory()
-		local facedir = meta:get_int("facedir")
-		meta:set_int("stopped", 0)
-		minetest.after(1, move_robot, pos, inv, facedir, player)
-	end,
-	
-	on_punch = function(pos, node, puncher, pointed_thing)
-		if minetest.is_protected(pos, puncher:get_player_name()) then
-			return
-		end
-		local meta = minetest.get_meta(pos)
-		meta:set_int("stopped", 1)
-	end,
-		
-	on_dig = function(pos, node, puncher, pointed_thing)
-		if minetest.is_protected(pos, puncher:get_player_name()) then
-			return
-		end
-		local meta = minetest.get_meta(pos)
-		local inv = meta:get_inventory()
-		meta:set_int("stopped", 1)
-		if inv:is_empty("src") then
-			minetest.node_dig(pos, node, puncher, pointed_thing)
-		end
-	end,
-
-	allow_metadata_inventory_put = allow_metadata_inventory,
-	allow_metadata_inventory_take = allow_metadata_inventory,
-
-	on_rotate = screwdriver.disallow,	
-	paramtype2 = "facedir",
-	groups = {cracky=1},
-	is_ground_content = false,
-})
diff --git a/textures/hyperloop_robot.png b/textures/hyperloop_robot.png
deleted file mode 100644
index 62497d3..0000000
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diff --git a/textures/hyperloop_robot2.png b/textures/hyperloop_robot2.png
deleted file mode 100644
index d9cc216..0000000
Binary files a/textures/hyperloop_robot2.png and /dev/null differ