diff --git a/deco.lua b/deco.lua
new file mode 100644
index 0000000..5ff6d9a
--- /dev/null
+++ b/deco.lua
@@ -0,0 +1,110 @@
+--[[
+
+	Hyperloop Mod
+	=============
+
+	Copyright (C) 2017 Joachim Stolberg
+
+	LGPLv2.1+
+	See LICENSE.txt for more information
+
+	History:
+	see init.lua
+
+]]--
+
+local tilesL = {"hyperloop_alpsL.png", "hyperloop_seaL.png", "hyperloop_agyptL.png"}
+local tilesR = {"hyperloop_alpsR.png", "hyperloop_seaR.png", "hyperloop_agyptR.png"}
+
+for idx = 1,3 do
+	
+	minetest.register_node("hyperloop:poster"..idx.."L", {
+		description = "Hyperloop Promo Poster "..idx,
+		tiles = {
+			-- up, down, right, left, back, front
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			tilesL[idx],
+		},
+		drawtype = "nodebox",
+		node_box = {
+			type = "fixed",
+			fixed = {
+				{ -8/16, -8/16, -6/16,  8/16,  8/16, 8/16},
+			},
+		},
+		selection_box = {
+			type = "fixed",
+			fixed = { -8/16, -8/16, -6/16,  24/16,  8/16, 8/16},
+		},
+		
+		after_place_node = function(pos, placer)
+			local meta = minetest.get_meta(pos)
+			local facedir
+			facedir, pos = hyperloop.right_hand_side(pos, placer)
+			meta:set_string("pos", minetest.pos_to_string(pos))
+			if minetest.get_node_or_nil(pos).name == "air" then
+				minetest.add_node(pos, {name="hyperloop:poster"..idx.."R", param2=facedir})
+			end
+		end,
+
+		on_destruct = function(pos)
+			local meta = minetest.get_meta(pos)
+			pos = minetest.string_to_pos(meta:get_string("pos"))
+			if pos ~= nil and minetest.get_node_or_nil(pos).name == "hyperloop:poster"..idx.."R" then
+				minetest.remove_node(pos)
+			end
+		end,
+		
+		
+		paramtype2 = "facedir",
+		light_source = 4,
+		is_ground_content = false,
+		groups = {cracky = 2, stone = 2},
+	})
+
+	minetest.register_node("hyperloop:poster"..idx.."R", {
+		description = "Hyperloop Promo Poster "..idx,
+		tiles = {
+			-- up, down, right, left, back, front
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			"hyperloop_skin2.png",
+			tilesR[idx],
+		},
+		drawtype = "nodebox",
+		node_box = {
+			type = "fixed",
+			fixed = {
+				{ -8/16, -8/16, -6/16,  8/16,  8/16, 8/16},
+			},
+		},
+		paramtype2 = "facedir",
+		light_source = 4,
+		is_ground_content = false,
+		groups = {cracky = 2, stone = 2, not_in_creative_inventory=1},
+	})
+end
+
+
+minetest.register_node("hyperloop:sign", {
+	description = "Hyperloop Station Sign",
+	tiles = {
+		-- up, down, right, left, back, front
+		"hyperloop_sign_top.png",
+		"hyperloop_sign.png",
+		"hyperloop_sign.png",
+		"hyperloop_sign.png",
+		"hyperloop_sign.png",
+		"hyperloop_sign.png",
+	},
+	drawtype = "nodebox",
+	light_source = 4,
+	is_ground_content = false,
+	groups = {cracky = 2, stone = 2},
+})
\ No newline at end of file
diff --git a/elevator.lua b/elevator.lua
new file mode 100644
index 0000000..ef96b38
--- /dev/null
+++ b/elevator.lua
@@ -0,0 +1,510 @@
+--[[
+
+	Hyperloop Mod
+	=============
+
+	Copyright (C) 2017 Joachim Stolberg
+
+	LGPLv2.1+
+	See LICENSE.txt for more information
+
+]]--
+
+
+----------------------------------------------------------------------------------------------------
+----------------------------------------------------------------------------------------------------
+
+--[[
+	spos = <pos.x>:<pos.z>
+	level = pos.y
+	hyperloop.data.tAllElevators[spos].floors[level] = {
+		pos = {x,y,z},	-- lower elevator block
+		facedir = n,	-- for the door placement
+		name = "...",	-- floor name
+		up = true,		-- connetion flag
+		down = true,	-- connetion flag
+	}
+]]--
+
+-- return index of the table position matching pos or nil
+local function pos_index(tbl, pos)
+	for idx,v in ipairs(tbl) do
+		if v.pos.x == pos.x and v.pos.y == pos.y and v.pos.z == pos.z then
+			return idx
+		end
+	end
+	return nil
+end
+
+-- remove invalid entries
+local function remove_artifacts(floors)
+	local tbl = {}
+	for idx,floor in ipairs(floors) do
+		if floor.pos ~= nil and floor.name ~= nil and floor.up ~= nil and floor.down ~= nil then
+			table.insert(tbl, floor)
+		end
+	end
+	return tbl
+end
+
+
+-- determine the elevator list
+local function get_elevator_list(pos)
+	local spos = tostring(pos.x)..":"..tostring(pos.z)
+	if hyperloop.data.tAllElevators[spos] == nil then
+		-- create the elevator
+		hyperloop.data.tAllElevators[spos] = {}
+	end
+	if hyperloop.data.tAllElevators[spos].floors == nil then
+		-- create the floor list
+		hyperloop.data.tAllElevators[spos].floors = {}
+	end
+	-- remove invalid entries
+	hyperloop.data.tAllElevators[spos].floors = remove_artifacts(hyperloop.data.tAllElevators[spos].floors)
+	return hyperloop.data.tAllElevators[spos].floors
+end
+
+local function remove_elevator_list(pos)
+	local spos = tostring(pos.x)..":"..tostring(pos.z)
+	hyperloop.data.tAllElevators[spos] = nil
+	--print(spos, dump(hyperloop.data.tAllElevators))
+end
+
+-- determine the elevator floor item or create one
+local function get_floor_item(pos)
+	local floors = get_elevator_list(pos)
+	local idx = pos_index(floors, pos)
+	if idx == nil then
+		-- create the floor item
+		table.insert(floors, {pos=pos})
+		idx = #floors
+	end
+	return floors[idx]
+end
+
+-- Add the given arguments to the elevator table
+local function add_to_elevator_list(pos, tArgs)
+	--print("add_to_elevator_list", dump(pos))
+	local floor = get_floor_item(pos)
+	for k,v in pairs(tArgs) do
+		floor[k] = v
+	end
+end
+
+local function dbg_out(label, pos)
+	print(label..":")
+	local floors = get_elevator_list(pos)
+	for _,floor in ipairs(floors) do
+		print("  pos="..floor.pos.x..","..floor.pos.y..","..floor.pos.z..
+			  " facedir="..tostring(floor.facedir).." name="..tostring(floor.name)..
+			  " up="..dump(floor.up).." down="..dump(floor.down))
+	end
+end
+
+-- return a sorted list of connected floors
+local function floor_list(pos)
+	local floors = table.copy(get_elevator_list(pos))
+	-- sort the list
+	table.sort(floors, function(x,y) 
+			return x.pos.y > y.pos.y
+		end)
+	-- check if elevator is complete
+	for idx,floor in ipairs(floors) do
+		--print(idx, #floors, floor.name, floor.up, floor.down)
+		if idx == 1 then
+			if floor.down == false then
+				return {}
+			end
+		elseif idx == #floors then
+			if floor.up == false then
+				return {}
+			end
+		elseif floor.up == false or floor.down == false then
+			return {}
+		end
+	end
+	return floors
+end
+
+
+-- store floor_pos (lower car block) as meta data
+local function set_floor_pos(pos, floor_pos)
+	local s = minetest.pos_to_string(floor_pos)
+	minetest.get_meta(pos):set_string("floor_pos", s)
+	return floor_pos
+end
+
+-- read floor_pos (upper car block) from meta data
+local function get_floor_pos(pos)
+	local s = minetest.get_meta(pos):get_string("floor_pos")
+	if s == nil then
+		return nil
+	end
+	return minetest.string_to_pos(s)
+end
+	
+	
+-- Form spec for the floor list
+local function formspec(pos)
+	local tRes = {"size[5,10]label[0.5,0; Wähle dein Ziel :: Select your destination]"}
+	tRes[2] = "label[1,0.6;Destination]label[2.5,0.6;Floor]"
+	local list = floor_list(pos)
+	for idx,floor in ipairs(list) do
+		if idx >= 12 then
+			break
+		end
+		local ypos = 0.5 + idx*0.8
+		local ypos2 = ypos - 0.2
+		tRes[#tRes+1] = "button_exit[1,"..ypos2..";1,1;button;"..#list-idx.."]"
+		if floor.pos.y ~= pos.y then
+			tRes[#tRes+1] = "label[2.5,"..ypos..";"..floor.name.."]"
+		else
+			tRes[#tRes+1] = "label[2.5,"..ypos..";(current position)]"
+		end
+	end
+	return table.concat(tRes)
+end
+
+local function update_formspec(pos)
+	local meta = minetest.get_meta(pos)
+	meta:set_string("formspec", formspec(pos))
+end
+
+local function remove_from_elevator_list(pos)
+	local floors = get_elevator_list(pos)
+	local idx = pos_index(floors, pos)
+	if idx ~= nil then
+		table.remove(floors, idx)
+	end
+	-- last car in the list?
+	if not next(floors) then
+		remove_elevator_list(pos)
+	else
+		-- update all other elevator cars 
+		for _,floor in ipairs(get_elevator_list(pos)) do
+			print(_, floor.name)
+			if floor.name ~= "<unknown>" then
+				update_formspec(floor.pos)
+			end
+		end
+	end
+end
+
+function hyperloop.update_elevator(pos)
+	local up = false
+	local down = false
+	--print("update y=", pos.y)
+	
+	pos.y = pos.y - 1
+	if string.find(minetest.get_node_or_nil(pos).name, "hyperloop:shaft") then
+		down = true
+	end
+	
+	pos.y = pos.y + 3
+	if string.find(minetest.get_node_or_nil(pos).name, "hyperloop:shaft") then
+		up = true
+	end
+	
+	pos.y = pos.y - 2
+	add_to_elevator_list(pos, {up=up, down=down})
+	--dbg_out("update", pos)
+
+	-- update all elevator cars which are already named
+	for _,floor in ipairs(get_elevator_list(pos)) do
+		print(_, floor.name)
+		if floor.name ~= "<unknown>" then
+			update_formspec(floor.pos)
+		end
+	end
+end
+
+
+-- place the elevator door on the given position: y, y+1
+local function place_door(pos, facedir, floor_pos)
+	if minetest.get_node_or_nil(pos).name == "air" then
+		minetest.add_node(pos, {name="hyperloop:elevator_door", param2=facedir})	
+		set_floor_pos(pos, floor_pos)
+	end
+	pos.y = pos.y + 1
+	if minetest.get_node_or_nil(pos).name == "air" then
+		minetest.add_node(pos, {name="hyperloop:elevator_door_top", param2=facedir})	
+		set_floor_pos(pos, floor_pos)
+	end
+	pos.y = pos.y - 1	-- restore old value
+end	
+
+-- remove the elevator door on the given position: y, y+1
+local function remove_door(pos)
+	if minetest.get_node_or_nil(pos).name == "hyperloop:elevator_door" then
+		minetest.remove_node(pos)	
+	end
+	pos.y = pos.y + 1
+	if minetest.get_node_or_nil(pos).name == "hyperloop:elevator_door_top" then
+		minetest.remove_node(pos)	
+	end
+	pos.y = pos.y - 1	-- restore old value
+end	
+
+local function door_command(floor_pos, facedir, cmnd)
+	local placedir = hyperloop.facedir_to_placedir(facedir)
+	print("placedir="..placedir.." facedir="..facedir)
+	local pos = hyperloop.new_pos(floor_pos, placedir, "1B")
+	if cmnd == "close" then
+		place_door(pos, facedir, floor_pos)
+	elseif cmnd == "open" then
+		remove_door(pos)
+	end
+end
+	
+-- on arrival station
+local function on_close_door(pos, facedir)
+	-- close the door and play sound if no player is around
+	if hyperloop.is_player_around(pos) then
+		-- try again later
+		minetest.after(3.0, on_close_door, pos, facedir)
+	else
+		door_command(pos, facedir, "close")
+	end
+end
+
+-- on arrival station
+local function on_open_door(pos, facedir)
+	minetest.sound_play("door", {
+			pos = pos,
+			gain = 0.5,
+			max_hear_distance = 10,
+		})
+	door_command(pos, facedir, "open")
+	minetest.after(5.0, on_close_door, pos, facedir)
+end
+
+local function on_arrival(pos, player)
+	local floor = get_floor_item(pos)
+	--door_command(dest.pos, facedir, "close")
+	if player ~= nil then
+		player:setpos(floor.pos)
+	end
+	minetest.after(1.0, on_open_door, floor.pos, floor.facedir)
+end
+
+minetest.register_node("hyperloop:elevator_bottom", {
+	description = "Hyperloop Elevator",
+	tiles = {
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+	},
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -8/16, -8/16, -8/16,  -7/16,  8/16, 8/16},
+			{  7/16, -8/16, -8/16,   8/16,  8/16, 8/16},
+			{ -7/16, -8/16,  7/16,   7/16,  8/16, 8/16},
+		},
+	},
+	selection_box = {
+		type = "fixed",
+		fixed = { -8/16, -8/16, -7/16,   8/16, 24/16, 8/16 },
+	},
+	inventory_image = "hyperloop_elevator_inventory.png",
+	drawtype = "nodebox",
+	paramtype = 'light',
+	light_source = 4,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	groups = {snappy = 3},
+
+	after_place_node = function(pos, placer, itemstack, pointed_thing)
+		-- store floor_pos (lower car block) as meta data
+		set_floor_pos(pos, pos)
+		local facedir = hyperloop.get_facedir(placer)
+		add_to_elevator_list(pos, {name="<unknown>", up=false, down=false, facedir=facedir, pos=pos})
+		hyperloop.update_elevator(pos)
+		-- formspec
+		local meta = minetest.get_meta(pos)
+		local formspec = "size[6,4]"..
+		"label[0,0;Please insert floor name]" ..
+		"field[0.5,1.5;5,1;floor;Floor name;Base]" ..
+		"button_exit[2,3.6;2,1;exit;Save]"
+		meta:set_string("formspec", formspec)
+		
+		-- swap last shaft node
+		pos.y = pos.y - 1
+		if minetest.get_node_or_nil(pos).name == "hyperloop:shaft" then
+			local node = minetest.get_node(pos)
+			node.name = "hyperloop:shaft2"
+			minetest.swap_node(pos, node)
+		end
+		pos.y = pos.y + 1
+		
+		-- add upper part of the car
+		local floor_pos = table.copy(pos)
+		pos.y = pos.y + 1
+		minetest.add_node(pos, {name="hyperloop:elevator_top", param2=facedir})
+		-- store floor_pos (lower car block) as meta data
+		set_floor_pos(pos, floor_pos)
+		pos.y = pos.y - 1
+		--dbg_out("after_place_node", pos)
+	end,
+
+	on_receive_fields = function(pos, formname, fields, player)
+		-- floor name entered?
+		if fields.floor ~= nil then
+			local floor = string.trim(fields.floor)
+			if floor == "" then
+				return
+			end
+			-- store the floor name in the global elevator list
+			local floor_pos = get_floor_pos(pos)
+			add_to_elevator_list(floor_pos, {name=floor})
+			hyperloop.update_elevator(floor_pos)
+			--dbg_out("on_receive_fields", floor_pos)
+		-- destination selected?
+		elseif fields.button ~= nil then
+			local floor_pos = get_floor_pos(pos)
+			local floor = get_floor_item(floor_pos)
+			local idx = tonumber(fields.button)
+			local list = floor_list(floor_pos)
+			local dest = list[#list-idx]
+			if dest.pos.y ~= floor_pos.y then
+				--local facedir = get_floor_item(floor_pos).facedir
+				minetest.sound_play("door", {
+						pos = floor_pos,
+						gain = 0.5,
+						max_hear_distance = 10,
+					})
+				door_command(floor_pos, floor.facedir, "close")
+				door_command(dest.pos, dest.facedir, "close")
+				minetest.after(2.0, on_arrival, dest.pos, player)
+			end
+		end
+	end,
+
+	on_destruct = function(pos)
+		pos.y = pos.y - 1
+		if minetest.get_node_or_nil(pos).name == "hyperloop:shaft2" then
+			local node = minetest.get_node(pos)
+			node.name = "hyperloop:shaft"
+			minetest.swap_node(pos, node)
+		end
+		pos.y = pos.y + 2
+		--print("pos.y="..pos.y)
+		minetest.remove_node(pos)
+		pos.y = pos.y - 1
+		remove_from_elevator_list(pos)
+		--local facedir = minetest.get_meta(pos):get_int("facedir")
+		--door_command(pos, facedir, "open")
+	end,
+
+})
+
+minetest.register_node("hyperloop:elevator_top", {
+	description = "Hyperloop Elevator",
+	tiles = {
+		-- up, down, right, left, back, front
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+		"hyperloop_elevator_top.png",
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+		"hyperloop_elevator.png",
+	},
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -8/16, -8/16, -8/16,  -7/16,  8/16, 8/16},
+			{  7/16, -8/16, -8/16,   8/16,  8/16, 8/16},
+			{ -7/16, -8/16,  7/16,   7/16,  8/16, 8/16},
+		},
+	},
+	
+	drawtype = "nodebox",
+	paramtype = 'light',
+	light_source = 2,
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	groups = {snappy = 3, not_in_creative_inventory=1},
+	drop = "hyperloop:elevator_bottom",
+})
+
+minetest.register_node("hyperloop:elevator_door_top", {
+	description = "Hyperloop Elevator Door",
+	tiles = {
+		-- up, down, right, left, back, front
+		"hyperloop_elevator_door_top.png",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -8/16, -8/16,  7/16,   8/16,  8/16, 8/16},
+		},
+	},
+	
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	groups = {snappy = 3, not_in_creative_inventory=1},
+})
+
+minetest.register_node("hyperloop:elevator_door", {
+	description = "Hyperloop Elevator Door",
+	tiles = {
+		-- up, down, right, left, back, front
+		"hyperloop_elevator_door.png",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{ -8/16, -8/16,  7/16,   8/16,  8/16, 8/16},
+		},
+	},
+	
+	selection_box = {
+		type = "fixed",
+		fixed = { -8/16, -8/16, 7/16,   8/16, 24/16, 8/16 },
+	},
+	
+	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
+		local floor_pos = get_floor_pos(pos)
+		local floor = get_floor_item(floor_pos)
+		print(dump(floor.pos), floor.facedir)
+		door_command(floor.pos, floor.facedir, "open")
+	end,
+	
+	paramtype2 = "facedir",
+	is_ground_content = false,
+	groups = {snappy = 3, not_in_creative_inventory=1},
+})
+
+-------------------------------------------------------
+--[[
+local pos = {x=1, y=2, z=3}
+local spos = tostring(pos.x)..":"..tostring(pos.z)
+hyperloop.data.tAllElevators[spos].floors = nil
+
+local floor = get_floor_item(pos)
+dbg_out("1", pos)
+add_to_elevator_list(pos, {name="test1", up=false, down=false, facedir=1, pos=pos})
+dbg_out("2", pos)
+remove_from_elevator_list(pos)
+dbg_out("3", pos)
+add_to_elevator_list(pos, {name="test1", up=false, down=false, facedir=1, pos=pos})
+dbg_out("4", pos)
+add_to_elevator_list(pos, {up=true})
+dbg_out("5", pos)
+print("6: ", dump(floor_list(pos)))
+
+local pos2 = {x=1, y=5, z=3}
+add_to_elevator_list(pos2, {name="test2", up=true, down=true, facedir=1, pos=pos2})
+dbg_out("7", pos2)
+print("8: ", dump(floor_list(pos2)))
+
+local pos3 = {x=1, y=9, z=3}
+add_to_elevator_list(pos3, {name="test3", up=false, down=true, facedir=1, pos=pos3})
+dbg_out("9", pos3)
+print("10: ", dump(floor_list(pos3)))
+]]--
diff --git a/shaft.lua b/shaft.lua
new file mode 100644
index 0000000..4fc1f2f
--- /dev/null
+++ b/shaft.lua
@@ -0,0 +1,82 @@
+--[[
+
+	Hyperloop Mod
+	=============
+
+	Copyright (C) 2017 Joachim Stolberg
+
+	LGPLv2.1+
+	See LICENSE.txt for more information
+
+	History:
+	see init.lua
+
+]]--
+
+	
+-- simple shaft without logic or "memory"
+minetest.register_node("hyperloop:shaft", {
+	description = "Hyperloop Elevator Shaft",
+	tiles = {
+		-- up, down, right, left, back, front
+		'hyperloop_tube_open.png',
+		'hyperloop_tube_open.png',
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+	},
+
+	after_place_node = function(pos, placer, itemstack, pointed_thing)
+		local npos = table.copy(pos)
+		npos.y = npos.y - 1
+		if minetest.get_node_or_nil(npos).name == "hyperloop:shaft" then
+			local node = minetest.get_node(npos)
+			node.name = "hyperloop:shaft2"
+			minetest.swap_node(npos, node)
+		elseif minetest.get_node_or_nil(npos).name == "hyperloop:elevator_top" then
+			npos.y = npos.y - 1
+			hyperloop.update_elevator(npos)
+		else
+			minetest.remove_node(pos)
+			return itemstack
+		end
+	end,
+	
+	after_destruct = function(pos)
+		local npos = table.copy(pos)
+		npos.y = npos.y - 1
+		if minetest.get_node_or_nil(npos).name == "hyperloop:shaft2" then
+			local node = minetest.get_node(npos)
+			node.name = "hyperloop:shaft"
+			minetest.swap_node(npos, node)
+		elseif minetest.get_node_or_nil(npos).name == "hyperloop:elevator_top" then
+			npos.y = npos.y - 1
+			hyperloop.update_elevator(npos)
+		end
+	end,
+	
+	light_source = 6,
+	paramtype2 = "facedir",
+	groups = {cracky=1},
+	is_ground_content = false,
+})
+
+-- simple shaft without logic or "memory"
+minetest.register_node("hyperloop:shaft2", {
+	description = "Hyperloop Elevator Shaft",
+	tiles = {
+		-- up, down, right, left, back, front
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+		"hyperloop_tube_locked.png^[transformR90]",
+	},
+
+	diggable = false,
+	paramtype2 = "facedir",
+	groups = {cracky=1, not_in_creative_inventory=1},
+	is_ground_content = false,
+})
diff --git a/station.lua b/station.lua
new file mode 100644
index 0000000..0ffb4f1
--- /dev/null
+++ b/station.lua
@@ -0,0 +1,89 @@
+--[[
+
+	Hyperloop Mod
+	=============
+
+	Copyright (C) 2017 Joachim Stolberg
+
+	LGPLv2.1+
+	See LICENSE.txt for more information
+
+	History:
+	see init.lua
+
+]]--
+
+local function assembly_plan(pos, facedir, clbk)
+	local placedir = hyperloop.facedir_to_placedir(facedir)
+	local res = true
+	facedir = (facedir + 1) % 4
+	pos = hyperloop.new_pos(pos, placedir, "1L")
+	res = clbk(pos, facedir, "hyperloop:tube0") and res
+	pos.y = pos.y + 1
+	res = clbk(pos, facedir, "hyperloop:pod_wall") and res
+	pos.y = pos.y + 1
+	res = clbk(pos, facedir, "hyperloop:pod_wall") and res
+	pos.y = pos.y - 2
+	pos = hyperloop.new_pos(pos, placedir, "1R")
+	facedir = (facedir + 2) % 4
+	res = clbk(pos, facedir, "hyperloop:tube0") and res
+	pos.y = pos.y + 2
+	res = clbk(pos, facedir, "hyperloop:lcd") and res
+	pos.y = pos.y - 2
+	facedir = (facedir + 2) % 4
+	pos = hyperloop.new_pos(pos, placedir, "1R")
+	res = clbk(pos, facedir, "hyperloop:junction") and res
+	pos.y = pos.y + 1
+	res = clbk(pos, facedir, "hyperloop:seat") and res
+	return res
+end
+
+
+local function check_space(pos, facedir)
+	local clbk = function(pos, facedir, block)
+		return minetest.get_node_or_nil(pos).name == "air"
+	end
+	
+	local my_pos = table.copy(pos)
+	return assembly_plan(my_pos, facedir, clbk)
+end
+
+local function construct(pos, facedir)
+	local clbk = function(pos, facedir, block)
+		if block == "hyperloop:lcd" then
+			local tbl = {[0]=4, [1]=2, [2]=5, [3]=3} 
+			minetest.add_node(pos, {name=block, paramtype2="wallmounted", param2=tbl[facedir]})
+			hyperloop.after_lcd_placed(pos, tbl[facedir])
+		elseif block == "hyperloop:seat" then
+			minetest.add_node(pos, {name=block, param2=facedir})
+			hyperloop.after_seat_placed(pos, facedir)
+		else
+			minetest.place_node(pos, {name=block, param2=facedir})
+		end
+	end
+	
+	local my_pos = table.copy(pos)
+	return assembly_plan(my_pos, facedir, clbk)
+end
+
+minetest.register_node("hyperloop:station", {
+	description = "Hyperloop Station Core",
+	inventory_image = "hyperloop_station_inventory.png",
+	wield_image = "hyperloop_station_inventory.png",
+
+	on_place = function(itemstack, placer, pointed_thing)
+		print("on_place")
+		local pos = minetest.pointed_thing_to_face_pos(placer, pointed_thing)
+		pos.y = pos.y + 0.5
+		--pos = vector.floor(pos)
+		print(dump(pos))
+		local facedir = hyperloop.get_facedir(placer)
+		if check_space(pos, facedir) then
+			print("checked")
+			construct(pos, facedir)
+			itemstack:take_item(1)
+			print("done")
+		end
+		return itemstack
+	end,
+})
\ No newline at end of file
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