Prepare for lib 'networks'

.test/sink.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	GPL v3
 	See LICENSE.txt for more information

basic_machines/concentrator.lua

@@ -16,7 +16,6 @@
 local M = minetest.get_meta
 local S = techage.S
 
-local networks = techage.networks
 local Tube = techage.Tube
 
 local size = 2/8
@@ -29,7 +28,7 @@ local Boxes = {
 	{{-size, -size, -size, size, 0.5,  size}}, -- y+
 }
 
-local names = techage.register_junction("techage:concentrator", 2/8, Boxes, Tube, {
+local names = networks.register_junction("techage:concentrator", 2/8, Boxes, Tube, {
 	description = S("Tube Concentrator"),
 	tiles = {
 		"techage_tube_junction.png^techage_appl_arrow2.png^[transformR270",
@@ -45,13 +44,13 @@ local names = techage.register_junction("techage:concentrator", 2/8, Boxes, Tube
 
 	after_place_node = function(pos, placer, itemstack, pointed_thing)
 		local node = minetest.get_node(pos)
-		local name = "techage:concentrator"..techage.junction_type(pos, Tube, "R", node.param2)
+		local name = "techage:concentrator"..networks.junction_type(pos, Tube, "R", node.param2)
 		minetest.swap_node(pos, {name = name, param2 = node.param2})
 		M(pos):set_int("push_dir", techage.side_to_outdir("R", node.param2))
 		Tube:after_place_node(pos)
 	end,
 	tubelib2_on_update2 = function(pos, dir1, tlib2, node)
-		local name = "techage:concentrator"..techage.junction_type(pos, Tube, "R", node.param2)
+		local name = "techage:concentrator"..networks.junction_type(pos, Tube, "R", node.param2)
 		minetest.swap_node(pos, {name = name, param2 = node.param2})
 	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
@@ -67,7 +66,7 @@ techage.register_node(names, {
 	is_pusher = true,  -- is a pulling/pushing node
 })	
 
-names = techage.register_junction("techage:ta4_concentrator", 2/8, Boxes, Tube, {
+names = networks.register_junction("techage:ta4_concentrator", 2/8, Boxes, Tube, {
 	description = S("TA4 Tube Concentrator"),
 	tiles = {
 		"techage_tubeta4_junction.png^techage_appl_arrow2.png^[transformR270",
@@ -83,13 +82,13 @@ names = techage.register_junction("techage:ta4_concentrator", 2/8, Boxes, Tube,
 
 	after_place_node = function(pos, placer, itemstack, pointed_thing)
 		local node = minetest.get_node(pos)
-		local name = "techage:ta4_concentrator"..techage.junction_type(pos, Tube, "R", node.param2)
+		local name = "techage:ta4_concentrator"..networks.junction_type(pos, Tube, "R", node.param2)
 		minetest.swap_node(pos, {name = name, param2 = node.param2})
 		M(pos):set_int("push_dir", techage.side_to_outdir("R", node.param2))
 		Tube:after_place_node(pos)
 	end,
 	tubelib2_on_update2 = function(pos, dir1, tlib2, node)
-		local name = "techage:ta4_concentrator"..techage.junction_type(pos, Tube, "R", node.param2)
+		local name = "techage:ta4_concentrator"..networks.junction_type(pos, Tube, "R", node.param2)
 		minetest.swap_node(pos, {name = name, param2 = node.param2})
 	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)

basic_machines/source.lua

@@ -28,8 +28,7 @@ local CYCLE_TIME = 2
 local PWR_PERF = 100
 
 local function formspec(self, pos, nvm)
-	return  techage.generator_formspec(self, pos, nvm, S("Power Source"), 
+	return techage.generator_formspec(self, pos, nvm, S("Power Source"), nvm.provided, PWR_PERF)
-		nvm.provided, PWR_PERF, nvm.generating)
 end
 
 -- Axles texture animation
@@ -39,7 +38,7 @@ local function switch_axles(pos, on)
 end
 
 local function start_node2(pos, nvm, state)
-	nvm.generating = true
+	nvm.running = true
 	nvm.provided = 0
 	local outdir = M(pos):get_int("outdir")
 	switch_axles(pos, true)
@@ -47,7 +46,7 @@ local function start_node2(pos, nvm, state)
 end
 
 local function stop_node2(pos, nvm, state)
-	nvm.generating = false
+	nvm.running = false
 	nvm.provided = 0
 	nvm.load = 0
 	local outdir = M(pos):get_int("outdir")
@@ -56,14 +55,16 @@ local function stop_node2(pos, nvm, state)
 end
 
 local function start_node3(pos, nvm, state)
-	nvm.generating = true
+	local meta = M(pos) 
+	nvm.running = true
 	nvm.provided = 0
-	local outdir = M(pos):get_int("outdir")
+	techage.evaluate_charge_termination(nvm, meta)
+	local outdir = meta:get_int("outdir")
 	power.start_storage_calc(pos, Cable, outdir)
 end
 
 local function stop_node3(pos, nvm, state)
-	nvm.generating = false
+	nvm.running = false
 	nvm.provided = 0
 	local outdir = M(pos):get_int("outdir")
 	power.start_storage_calc(pos, Cable, outdir)
@@ -89,24 +90,30 @@ local State3 = techage.NodeStates:new({
 
 local function node_timer2(pos, elapsed)
 	--print("node_timer2")
+	local meta = M(pos)
 	local nvm = techage.get_nvm(pos)
-	local outdir = M(pos):get_int("outdir")
+	local outdir = meta:get_int("outdir")
-	nvm.provided = power.provide_power(pos, Axle, outdir, PWR_PERF, nvm.termpoint1, nvm.termpoint2)
+	local tp1 = tonumber(meta:get_string("termpoint1"))
+	local tp2 = tonumber(meta:get_string("termpoint2"))
+	nvm.provided = power.provide_power(pos, Axle, outdir, PWR_PERF, tp1, tp2)
 	nvm.load = power.get_storage_load(pos, Axle, outdir, PWR_PERF)
 	if techage.is_activeformspec(pos) then
-		M(pos):set_string("formspec", formspec(State2, pos, nvm))
+		meta:set_string("formspec", formspec(State2, pos, nvm))
 	end
 	return true
 end
 
 local function node_timer3(pos, elapsed)
 	--print("node_timer4")
+	local meta = M(pos)
 	local nvm = techage.get_nvm(pos)
 	local outdir = M(pos):get_int("outdir")
-	nvm.provided = power.provide_power(pos, Cable, outdir, PWR_PERF, nvm.termpoint1, nvm.termpoint2)
+	local tp1 = tonumber(meta:get_string("termpoint1"))
+	local tp2 = tonumber(meta:get_string("termpoint2"))
+	nvm.provided = power.provide_power(pos, Cable, outdir, PWR_PERF, tp1, tp2)
 	nvm.load = power.get_storage_load(pos, Cable, outdir, PWR_PERF)
 	if techage.is_activeformspec(pos) then
-		M(pos):set_string("formspec", formspec(State3, pos, nvm))
+		meta:set_string("formspec", formspec(State3, pos, nvm))
 	end
 	return true
 end
@@ -117,7 +124,6 @@ local function on_receive_fields2(pos, formname, fields, player)
 	end
 	local nvm = techage.get_nvm(pos)
 	State2:state_button_event(pos, nvm, fields)
-	techage.evaluate_charge_termination(nvm, fields)
 	M(pos):set_string("formspec", formspec(State2, pos, nvm))
 end
 
@@ -127,7 +133,6 @@ local function on_receive_fields3(pos, formname, fields, player)
 	end
 	local nvm = techage.get_nvm(pos)
 	State3:state_button_event(pos, nvm, fields)
-	techage.evaluate_charge_termination(nvm, fields)
 	M(pos):set_string("formspec", formspec(State3, pos, nvm))
 end
 
@@ -172,7 +177,7 @@ end
 
 local function get_generator_data(pos, tlib2)
 	local nvm = techage.get_nvm(pos)
-	if nvm.generating then
+	if nvm.running then
 		return {level = (nvm.load or 0) / PWR_PERF, perf = PWR_PERF, capa = PWR_PERF * 2}
 	end
 end
@@ -221,6 +226,7 @@ minetest.register_node("techage:t4_source", {
 	after_place_node = after_place_node3,
 	after_dig_node = after_dig_node3,
 	get_generator_data = get_generator_data,
+	ta3_formspec = techage.generator_settings("ta3", PWR_PERF),
 })
 
 power.register_nodes({"techage:t2_source"}, Axle, "gen", {"R"})
@@ -231,10 +237,8 @@ techage.register_node({"techage:t4_source"}, {
 		local nvm = techage.get_nvm(pos)
 		if topic == "delivered" then
 			return nvm.provided or 0
-		elseif topic == "info" then
-			
 		else
-			return State:on_receive_message(pos, topic, payload)
+			return State3:on_receive_message(pos, topic, payload)
 		end
 	end,
 })	
@@ -245,13 +249,14 @@ control.register_nodes({"techage:t4_source"}, {
 		on_request = function(pos, tlib2, topic)
 			if topic == "info" then
 				local nvm = techage.get_nvm(pos)
+				local meta = M(pos)
 				return {
 					type = S("Ele Power Source"),
-					number = M(pos):get_string("node_number") or "",
+					number = meta:get_string("node_number") or "",
-					running = nvm.generating or false,
+					running = nvm.running or false,
 					available = PWR_PERF,
 					provided = nvm.provided or 0,
-					termpoint = nvm.termpoint or "unknown", 
+					termpoint = meta:get_string("termpoint"), 
 				}
 			end
 			return false

basis/firebox_lib.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information

basis/fuel_lib.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -17,7 +17,7 @@ local P2S = minetest.pos_to_string
 local M = minetest.get_meta
 local S = techage.S
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local liquid = networks.liquid
 local ValidOilFuels = techage.firebox.ValidOilFuels
 local Burntime = techage.firebox.Burntime
 
@@ -28,11 +28,12 @@ local BLOCKING_TIME = 0.3 -- 300ms
 
 techage.fuel.CAPACITY = CAPACITY
 
--- fuel burning categories (better than...)
+-- fuel burning categories (equal or better than...)
-techage.fuel.BT_BITUMEN = 4
+techage.fuel.BT_BITUMEN  = 5
-techage.fuel.BT_OIL     = 3
+techage.fuel.BT_OIL      = 4
-techage.fuel.BT_FUELOIL = 2
+techage.fuel.BT_FUELOIL  = 3
-techage.fuel.BT_NAPHTHA = 1
+techage.fuel.BT_NAPHTHA  = 2
+techage.fuel.BT_GASOLINE = 1
 
 
 function techage.fuel.fuel_container(x, y, nvm)
@@ -95,6 +96,7 @@ function techage.fuel.burntime(name)
 	return 0.01 -- not zero !
 end
 
+-- equal or better than the given category (see 'techage.fuel.BT_BITUMEN,...')
 function techage.fuel.valid_fuel(name, category)
 	return ValidOilFuels[name] and ValidOilFuels[name] <= category
 end
@@ -109,7 +111,7 @@ function techage.fuel.on_punch(pos, node, puncher, pointed_thing)
 	
 	local wielded_item = puncher:get_wielded_item():get_name()
 	local item_count = puncher:get_wielded_item():get_count()
-	local new_item = liquid.fill_on_punch(nvm, wielded_item, item_count, puncher) 
+	local new_item = techage.liquid.fill_on_punch(nvm, wielded_item, item_count, puncher) 
 	if new_item then
 		puncher:set_wielded_item(new_item)
 		M(pos):set_string("formspec", techage.fuel.formspec(pos, nvm))
@@ -117,11 +119,11 @@ function techage.fuel.on_punch(pos, node, puncher, pointed_thing)
 		return
 	end
 		
-	local ldef = liquid.get_liquid_def(wielded_item)
+	local ldef = techage.liquid.get_liquid_def(wielded_item)
 	if ldef and ValidOilFuels[ldef.inv_item] then
 		local lqd = (minetest.registered_nodes[node.name] or {}).liquid
 		if not lqd.fuel_cat or ValidOilFuels[ldef.inv_item] <= lqd.fuel_cat then
-			local new_item = liquid.empty_on_punch(pos, nvm, wielded_item, item_count)
+			local new_item = techage.liquid.empty_on_punch(pos, nvm, wielded_item, item_count)
 			if new_item then
 				puncher:set_wielded_item(new_item)
 				M(pos):set_string("formspec", techage.fuel.formspec(pos, nvm))
@@ -154,3 +156,42 @@ function techage.fuel.get_fuel_amount(nvm)
 	end
 	return 0
 end
+
+function techage.fuel.get_liquid_table(valid_fuel, capacity, start_firebox)
+	return {
+		capa = capacity,
+		fuel_cat = valid_fuel,
+		peek = function(pos)
+			local nvm = techage.get_nvm(pos)
+			return liquid.srv_peek(nvm)
+		end,
+		put = function(pos, indir, name, amount)
+			if techage.fuel.valid_fuel(name, valid_fuel) then
+				local nvm = techage.get_nvm(pos)
+				local res = liquid.srv_put(nvm, name, amount, capacity)
+				start_firebox(pos, nvm)
+				if techage.is_activeformspec(pos) then
+					M(pos):set_string("formspec", techage.fuel.formspec(nvm))
+				end
+				return res
+			end
+			return amount
+		end,
+		take = function(pos, indir, name, amount)
+			local nvm = techage.get_nvm(pos)
+			amount, name = liquid.srv_take(nvm, name, amount)
+			if techage.is_activeformspec(pos) then
+				M(pos):set_string("formspec", techage.fuel.formspec(nvm))
+			end
+			return amount, name
+		end,
+		untake = function(pos, indir, name, amount)
+			local nvm = techage.get_nvm(pos)
+			local leftover = liquid.srv_put(nvm, name, amount, capacity)
+			if techage.is_activeformspec(pos) then
+				M(pos):set_string("formspec", techage.fuel.formspec(nvm))
+			end
+			return leftover
+		end
+	}
+end

basis/node_states.lua

@@ -67,7 +67,7 @@ local N = techage.get_node_lvm
 --
 
 techage.RUNNING = 1	-- in normal operation/turned on
-techage.BLOCKED = 2 -- a pushing node is blocked due to a full destination inventory
+techage.BLOCKED = 2     -- a pushing node is blocked due to a full destination inventory
 techage.STANDBY = 3	-- nothing to do (e.g. no input items), or node (world) not loaded
 techage.NOPOWER = 4	-- only for power consuming nodes, no operation
 techage.FAULT   = 5	-- any fault state (e.g. wrong source items), which can be fixed by the player
@@ -158,6 +158,12 @@ function techage.needs_power(nvm)
 	return state == RUNNING or state == NOPOWER
 end
 
+-- consumes power
+function techage.needs_power2(state)
+	state = state or STOPPED
+	return state == RUNNING or state == NOPOWER
+end
+
 function techage.get_state_string(nvm)
 	return techage.StateStrings[nvm.techage_state or STOPPED]
 end

chemistry/ta4_doser.lua

@@ -67,7 +67,7 @@ local function get_liquids(pos)
 	-- determine the available input liquids
 	local tbl = {}
 	for outdir = 1,4 do
-		local name, num = liquid.peek(pos, outdir)
+		local name, num = liquid.peek(pos, Pipe, outdir)
 		if name then
 			tbl[name] = outdir
 		end
@@ -87,7 +87,7 @@ local function reload_liquids(pos)
 	-- determine the available input liquids
 	local tbl = {}
 	for outdir = 1,4 do
-		local name, num = liquid.peek(pos, outdir)
+		local name, num = liquid.peek(pos, Pipe, outdir)
 		if name then
 			tbl[name] = outdir
 		end
@@ -155,7 +155,7 @@ local State = techage.NodeStates:new({
 
 local function untake(pos, taken)
 	for _,item in pairs(taken) do
-		liquid.untake(pos, item.outdir, item.name, item.num)
+		liquid.untake(pos, Pipe, item.outdir, item.name, item.num)
 	end
 end	
 
@@ -210,7 +210,7 @@ local function dosing(pos, nvm, elapsed)
 				untake(pos, taken)
 				return
 			end
-			local num = liquid.take(pos, outdir, item.name, item.num, starter)
+			local num = liquid.take(pos, Pipe, outdir, item.name, item.num, starter)
 			if num < item.num then
 				taken[#taken + 1] = {outdir = outdir, name = item.name, num = num}
 				State:standby(pos, nvm)
@@ -307,7 +307,6 @@ minetest.register_node("techage:ta4_doser", {
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		techage.remove_node(pos, oldnode, oldmetadata)
 		Pipe:after_dig_node(pos)
-		liquid.after_dig_pump(pos)
 		techage.del_mem(pos)
 	end,
 	on_receive_fields = on_receive_fields,

chemistry/ta4_liquid_filter.lua

@@ -105,7 +105,6 @@ minetest.register_node("techage:ta4_liquid_filter_filler", {
 	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_node(pos)
-		liquid.after_dig_pump(pos)
 		techage.del_mem(pos)
 	end,
 
@@ -134,7 +133,7 @@ minetest.register_node("techage:ta4_liquid_filter_filler", {
 			end
 			if math.random() < 0.5 then
 				local out_pos = {x=pos.x,y=pos.y-8,z=pos.z}
-				local leftover = liquid.put(out_pos, networks.side_to_outdir(out_pos, "R"), "techage:lye", 1)
+				local leftover = liquid.put(out_pos, Pipe, networks.side_to_outdir(out_pos, "R"), "techage:lye", 1)
 				if leftover > 0 then
 					return amount
 				end

chemistry/ta4_reactor.lua

@@ -85,7 +85,7 @@ end
 local function base_waste(pos, payload)
 	local pos2 = {x = pos.x, y = pos.y-3, z = pos.z}
 	local outdir = M(pos2):get_int("outdir")
-	return liquid.put(pos2, outdir, payload.name, payload.amount, payload.player_name)
+	return liquid.put(pos2, Pipe, outdir, payload.name, payload.amount, payload.player_name)
 end
 
 -- controlled by the doser

chemistry/ta4_stand.lua

@@ -117,7 +117,6 @@ minetest.register_node("techage:ta4_reactor_stand", {
 	after_dig_node = function(pos, oldnode)
 		Pipe:after_dig_node(pos)
 		Cable:after_dig_node(pos)
-		liquid.after_dig_pump(pos)
 		techage.del_mem(pos)
 	end,
 	
@@ -153,7 +152,7 @@ techage.register_node({"techage:ta4_reactor_stand"}, {
 			return nvm.has_power or power.power_available(pos, Cable)
 		elseif topic == "output" then
 			local outdir = M(pos):get_int("outdir")
-			return liquid.put(pos, outdir, payload.name, payload.amount, payload.player_name)
+			return liquid.put(pos, Pipe, outdir, payload.name, payload.amount, payload.player_name)
 		elseif topic == "can_start" then
 			return power.power_available(pos, Cable)
 		elseif topic == "start" then

coal_power_station/generator.lua

@@ -26,8 +26,7 @@ local power = networks.power
 local control = networks.control
 
 local function formspec(self, pos, nvm)
-	return techage.generator_formspec(self, pos, nvm, S("Generator"), 
+	return techage.generator_formspec(self, pos, nvm, S("Generator"), nvm.provided, PWR_CAPA)
-		nvm.provided, PWR_CAPA, nvm.running)
 end
 
 local function transfer_turbine(pos, topic, payload)
@@ -41,17 +40,18 @@ end
 
 local function start_node(pos, nvm, state)
 	local outdir = M(pos):get_int("outdir")
-	power.start_storage_calc(pos, Cable, outdir)
+	techage.evaluate_charge_termination(nvm, M(pos))
 	transfer_turbine(pos, "start")
 	nvm.running = true
+	power.start_storage_calc(pos, Cable, outdir)
 end
 
 local function stop_node(pos, nvm, state)
 	local outdir = M(pos):get_int("outdir")
-	power.start_storage_calc(pos, Cable, outdir)
 	nvm.provided = 0
 	transfer_turbine(pos, "stop")
 	nvm.running = false
+	power.start_storage_calc(pos, Cable, outdir)
 end
 
 local State = techage.NodeStates:new({
@@ -67,6 +67,7 @@ local State = techage.NodeStates:new({
 })
 
 local function node_timer(pos, elapsed)
+	local meta = M(pos)
 	local nvm = techage.get_nvm(pos)
 	nvm.firebox_trigger = (nvm.firebox_trigger or 0) - 1
 	if nvm.firebox_trigger <= 0 then
@@ -74,13 +75,15 @@ local function node_timer(pos, elapsed)
 		stop_node(pos, nvm, State)
 		transfer_turbine(pos, "stop")	
 	else
-		local outdir = M(pos):get_int("outdir")
+		local outdir = meta:get_int("outdir")
-		nvm.provided = power.provide_power(pos, Cable, outdir, PWR_CAPA, nvm.termpoint1, nvm.termpoint2)
+		local tp1 = tonumber(meta:get_string("termpoint1"))
+		local tp2 = tonumber(meta:get_string("termpoint2"))
+		nvm.provided = power.provide_power(pos, Cable, outdir, PWR_CAPA, tp1, tp2)
 		nvm.load = power.get_storage_load(pos, Cable, outdir, PWR_CAPA)
 		State:keep_running(pos, nvm, COUNTDOWN_TICKS)
 	end
 	if techage.is_activeformspec(pos) then
-		M(pos):set_string("formspec", formspec(State, pos, nvm))
+		meta:set_string("formspec", formspec(State, pos, nvm))
 	end
 	return State:is_active(nvm)
 end
@@ -91,7 +94,6 @@ local function on_receive_fields(pos, formname, fields, player)
 	end
 	local nvm = techage.get_nvm(pos)
 	State:state_button_event(pos, nvm, fields)
-	techage.evaluate_charge_termination(nvm, fields)
 end
 
 local function on_rightclick(pos, node, clicker)
@@ -106,6 +108,7 @@ local function after_place_node(pos)
 	State:node_init(pos, nvm, number)
 	M(pos):set_int("outdir", networks.side_to_outdir(pos, "R"))
 	M(pos):set_string("formspec", formspec(State, pos, nvm))
+	techage.evaluate_charge_termination(nvm, M(pos))
 	Cable:after_place_node(pos)
 end
 
@@ -139,6 +142,7 @@ minetest.register_node("techage:generator", {
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
 	get_generator_data = get_generator_data,
+	ta3_formspec = techage.generator_settings("ta3", PWR_CAPA),
 
 	paramtype2 = "facedir",
 	groups = {cracky=2, crumbly=2, choppy=2},
@@ -183,6 +187,7 @@ minetest.register_node("techage:generator_on", {
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
 	get_generator_data = get_generator_data,
+	ta3_formspec = techage.generator_settings("ta3", PWR_CAPA),
 
 	drop = "",
 	paramtype2 = "facedir",
@@ -225,13 +230,14 @@ control.register_nodes({"techage:generator", "techage:generator_on"}, {
 		on_request = function(pos, tlib2, topic)
 			if topic == "info" then
 				local nvm = techage.get_nvm(pos)
+				local meta = M(pos)
 				return {
 					type = S("TA3 Generator"),
-					number = M(pos):get_string("node_number") or "",
+					number = meta:get_string("node_number") or "",
 					running = nvm.running or false,
 					available = PWR_CAPA,
 					provided = nvm.provided or 0,
-					termpoint = nvm.termpoint or "unknown", 
+					termpoint = meta:get_string("termpoint"), 
 				}
 			end
 			return false

coal_power_station/oilfirebox.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -20,7 +20,7 @@ local S = techage.S
 local firebox = techage.firebox
 local fuel = techage.fuel
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local liquid = networks.liquid
 
 local CYCLE_TIME = 2
 local BURN_CYCLE_FACTOR = 0.5
@@ -115,44 +115,10 @@ minetest.register_node("techage:oilfirebox", {
 			minetest.after(1, start_firebox, pos, nvm)
 		end
 	end,
-	
---	liquid = {   TODO
---		capa = fuel.CAPACITY,
---		fuel_cat = fuel.BT_BITUMEN,
---		peek = liquid.srv_peek,
---		put = function(pos, indir, name, amount)
---			if fuel.valid_fuel(name, fuel.BT_BITUMEN) then
---				local leftover = liquid.srv_put(pos, indir, name, amount)
---				local nvm = techage.get_nvm(pos)
---				nvm.liquid = nvm.liquid or {}
---				nvm.liquid.amount = nvm.liquid.amount or 0
---				start_firebox(pos, nvm)
---				if techage.is_activeformspec(pos) then
---					local nvm = techage.get_nvm(pos)
---					M(pos):set_string("formspec", fuel.formspec(nvm))
---				end
---				return leftover
---			end
---			return amount
---		end,
---		take = function(pos, indir, name, amount)
---			amount, name = liquid.srv_take(pos, indir, name, amount)
---			if techage.is_activeformspec(pos) then
---				local nvm = techage.get_nvm(pos)
---				M(pos):set_string("formspec", fuel.formspec(nvm))
---			end
---			return amount, name
---		end
---	},
---	networks = {
---		pipe2 = {
---			sides = techage.networks.AllSides, -- Pipe connection sides
---			ntype = "tank",
---		},
---	},
 })
 
-Pipe:add_secondary_node_names({"techage:oilfirebox"})
+liquid.register_nodes({"techage:oilfirebox"},
+	Pipe, "tank", nil, fuel.get_liquid_table(fuel.BT_OIL, fuel.CAPACITY, start_firebox))
 
 
 techage.register_node({"techage:oilfirebox"}, {
@@ -161,7 +127,7 @@ techage.register_node({"techage:oilfirebox"}, {
 		if topic == "state" then
 			return nvm.running and "running" or "stopped"
 		elseif topic == "fuel" then
-			return techage.fuel.get_fuel_amount(nvm)
+			return fuel.get_fuel_amount(nvm)
 		else
 			return "unsupported"
 		end

furnace/booster.lua

@@ -20,8 +20,7 @@ local PWR_NEEDED = 3
 local CYCLE_TIME = 2
 
 local Cable = techage.ElectricCable
-local power = techage.power
+local power = networks.power
---local networks = techage.networks
 
 local function infotext(pos, state)
 	M(pos):set_string("infotext", S("TA3 Booster")..": "..state)
@@ -58,23 +57,6 @@ local function stop_sound(pos)
 	end
 end
 
-local function on_power(pos)
-	swap_node(pos, "techage:ta3_booster_on")
-	infotext(pos, "running")
-	play_sound(pos)
-end
-
-local function on_nopower(pos)
-	swap_node(pos, "techage:ta3_booster")
-	infotext(pos, "no power")
-	stop_sound(pos)
-end
-
-local function node_timer(pos, elapsed)
-	power.consumer_alive(pos, Cable, CYCLE_TIME)
-	return true
-end
-
 local function after_place_node(pos)
 	local nvm = techage.get_nvm(pos)
 	Cable:after_place_node(pos)
@@ -89,10 +71,6 @@ local function after_dig_node(pos, oldnode)
 	techage.del_mem(pos)
 end
 
-local function tubelib2_on_update2(pos, outdir, tlib2, node) 
-	power.update_network(pos, outdir, tlib2)
-end
-
 minetest.register_node("techage:ta3_booster", {
 	description = S("TA3 Booster"),
 	tiles = {
@@ -105,19 +83,17 @@ minetest.register_node("techage:ta3_booster", {
 		"techage_filling_ta3.png^techage_appl_compressor.png^[transformFX^techage_frame_ta3.png",
 	},
 	
-	on_timer = node_timer,
+	on_timer = function(pos, elapsed)
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
+		if consumed == PWR_NEEDED then
+			swap_node(pos, "techage:ta3_booster_on")
+			infotext(pos, "running")
+			play_sound(pos)
+		end
+		return true
+	end,
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
-	tubelib2_on_update2 = tubelib2_on_update2,
-	networks = {
-		ele1 = {
-			sides = {B = true, F = true, L = true, D = true, U = true},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-			nominal = PWR_NEEDED,
-		},
-	},
 	
 	paramtype2 = "facedir",
 	groups = {cracky=2, crumbly=2, choppy=2},
@@ -126,7 +102,6 @@ minetest.register_node("techage:ta3_booster", {
 	sounds = default.node_sound_wood_defaults(),
 })
 
-
 minetest.register_node("techage:ta3_booster_on", {
 	tiles = {
 		-- up, down, right, left, back, front
@@ -156,20 +131,17 @@ minetest.register_node("techage:ta3_booster_on", {
 		},
 	},
 	
-	on_timer = node_timer,
+	on_timer = function(pos, elapsed)
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
+		if consumed < PWR_NEEDED then
+			swap_node(pos, "techage:ta3_booster")
+			infotext(pos, "no power")
+			stop_sound(pos)
+		end
+		return true
+	end,
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
-	tubelib2_on_update2 = tubelib2_on_update2,
-	networks = {
-		ele1 = {
-			sides = {B = true, F = true, L = true, D = true, U = true},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-			nominal = PWR_NEEDED,
-			is_running = function() return true end,
-		},
-	},
 	
 	paramtype2 = "facedir",
 	groups = {not_in_creative_inventory = 1},
@@ -179,7 +151,7 @@ minetest.register_node("techage:ta3_booster_on", {
 	sounds = default.node_sound_wood_defaults(),
 })
 
-Cable:add_secondary_node_names({"techage:ta3_booster", "techage:ta3_booster_on"})
+power.register_nodes({"techage:ta3_booster", "techage:ta3_booster_on"}, Cable, "con", {"B", "F", "L", "D", "U"})
 
 -- for intra machine communication
 techage.register_node({"techage:ta3_booster", "techage:ta3_booster_on"}, {
@@ -194,15 +166,16 @@ techage.register_node({"techage:ta3_booster", "techage:ta3_booster_on"}, {
 			elseif topic == "start" and not nvm.running then
 				if power.power_available(pos, Cable) then
 					nvm.running = true
-					power.consumer_start(pos, Cable, CYCLE_TIME)
 					minetest.get_node_timer(pos):start(CYCLE_TIME)
+					swap_node(pos, "techage:ta3_booster_on")
+					infotext(pos, "running")
+					play_sound(pos)
 				else
 					infotext(pos, "no power")
 				end
 			elseif topic == "stop" then
 				nvm.running = false
 				swap_node(pos, "techage:ta3_booster")
-				power.consumer_stop(pos, Cable)
 				minetest.get_node_timer(pos):stop()
 				infotext(pos, "stopped")
 				stop_sound(pos)

furnace/firebox.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -19,7 +19,7 @@ local S = techage.S
 local firebox = techage.firebox
 local fuel = techage.fuel
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local liquid = networks.liquid
 
 local CYCLE_TIME = 2
 local EFFICIENCY = 2 -- burn cycles
@@ -80,38 +80,6 @@ local function booster_cmnd(pos, cmnd)
 		{"techage:ta3_booster", "techage:ta3_booster_on"})
 end
 
-local _liquid = {
-	capa = fuel.CAPACITY,
-	fuel_cat = fuel.BT_BITUMEN,
-	peek = liquid.srv_peek,
-	put = function(pos, indir, name, amount)
-		if fuel.valid_fuel(name, fuel.BT_BITUMEN) then
-			local res = liquid.srv_put(pos, indir, name, amount)
-			if techage.is_activeformspec(pos) then
-				local nvm = techage.get_nvm(pos)
-				M(pos):set_string("formspec", fuel.formspec(nvm))
-			end
-			return res
-		end
-		return amount
-	end,
-	take = function(pos, indir, name, amount)
-		amount, name = liquid.srv_take(pos, indir, name, amount)
-		if techage.is_activeformspec(pos) then
-			local nvm = techage.get_nvm(pos)
-			M(pos):set_string("formspec", fuel.formspec(nvm))
-		end
-		return amount, name
-	end
-}
-
-local _networks = {
-	pipe2 = {
-		sides = techage.networks.AllSides, -- Pipe connection sides
-		ntype = "tank",
-	},
-}
-
 minetest.register_node("techage:furnace_firebox", {
 	description = S("TA3 Furnace Oil Burner"),
 	tiles = {
@@ -134,8 +102,6 @@ minetest.register_node("techage:furnace_firebox", {
 	on_punch = fuel.on_punch,
 	on_receive_fields = fuel.on_receive_fields,
 	on_rightclick = fuel.on_rightclick,
-	liquid = _liquid,
-	networks = _networks,
 	
 	on_construct = function(pos)
 		local nvm = techage.get_nvm(pos)
@@ -185,8 +151,6 @@ minetest.register_node("techage:furnace_firebox_on", {
 	on_receive_fields = fuel.on_receive_fields,
 	on_punch = fuel.on_punch,
 	on_rightclick = fuel.on_rightclick,
-	liquid = _liquid,
-	networks = _networks,
 })
 
 minetest.register_craft({
@@ -204,7 +168,7 @@ techage.register_node({"techage:furnace_firebox", "techage:furnace_firebox_on"},
 		if topic == "state" then
 			return nvm.running and "running" or "stopped"
 		elseif topic == "fuel" then
-			return techage.fuel.get_fuel_amount(nvm)
+			return fuel.get_fuel_amount(nvm)
 		else
 			return "unsupported"
 		end
@@ -237,4 +201,5 @@ techage.register_node({"techage:furnace_firebox", "techage:furnace_firebox_on"},
 	end,
 })	
 
-Pipe:add_secondary_node_names({"techage:furnace_firebox", "techage:furnace_firebox_on"})
+liquid.register_nodes({"techage:furnace_firebox", "techage:furnace_firebox_on"},
+	Pipe, "tank", nil, fuel.get_liquid_table(fuel.BT_OIL, fuel.CAPACITY, start_firebox))

furnace/heater.lua

@@ -16,11 +16,11 @@
 local M = minetest.get_meta
 local S = techage.S
 
-local CYCLE_TIME = 2
 local PWR_NEEDED = 14
+local CYCLE_TIME = 2
 
 local Cable = techage.ElectricCable
-local power = techage.power
+local power = networks.power
 
 local function swap_node(pos, name)
 	local node = techage.get_node_lvm(pos)
@@ -31,18 +31,6 @@ local function swap_node(pos, name)
 	minetest.swap_node(pos, node)
 end
 
-local function on_power(pos)
-	swap_node(pos, "techage:furnace_heater_on")
-end
-
-local function on_nopower(pos)
-	swap_node(pos, "techage:furnace_heater")
-end
-
-local function node_timer(pos, elapsed)
-	power.consumer_alive(pos, Cable, CYCLE_TIME)
-	return true
-end
 
 local function after_place_node(pos)
 	Cable:after_place_node(pos)
@@ -53,10 +41,6 @@ local function after_dig_node(pos, oldnode)
 	techage.del_mem(pos)
 end
 
-local function tubelib2_on_update2(pos, outdir, tlib2, node) 
-	power.update_network(pos, outdir, tlib2)
-end
-
 minetest.register_node("techage:furnace_heater", {
 	description = S("TA4 Furnace Heater"),
 	tiles = {
@@ -69,19 +53,15 @@ minetest.register_node("techage:furnace_heater", {
 		"techage_concrete.png^techage_appl_heater.png^techage_frame_ta3.png",
 	},
 	
-	on_timer = node_timer,
+	on_timer = function(pos, elapsed)
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
+		if consumed == PWR_NEEDED then
+			swap_node(pos, "techage:furnace_heater_on")
+		end
+		return true
+	end,
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
-	tubelib2_on_update2 = tubelib2_on_update2,
-	networks = {
-		ele1 = {
-			sides = {B = true, F = true, L = true, D = true, U = true},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-			nominal = PWR_NEEDED,
-		},
-	},
 	
 	paramtype2 = "facedir",
 	groups = {cracky=2, crumbly=2, choppy=2},
@@ -102,20 +82,15 @@ minetest.register_node("techage:furnace_heater_on", {
 		"techage_concrete.png^techage_appl_heater_on.png^techage_frame_ta3.png",
 	},
 	
-	on_timer = node_timer,
+	on_timer = function(pos, elapsed)
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
+		if consumed < PWR_NEEDED then
+			swap_node(pos, "techage:furnace_heater")
+		end
+		return true
+	end,
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
-	tubelib2_on_update2 = tubelib2_on_update2,
-	networks = {
-		ele1 = {
-			sides = {B = true, F = true, L = true, D = true, U = true},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-			nominal = PWR_NEEDED,
-			is_running = function() return true end,
-		},
-	},
 	
 	light_source = 8,
 	paramtype2 = "facedir",
@@ -126,16 +101,7 @@ minetest.register_node("techage:furnace_heater_on", {
 	sounds = default.node_sound_wood_defaults(),
 })
 
-Cable:add_secondary_node_names({"techage:furnace_heater", "techage:furnace_heater_on"})
+power.register_nodes({"techage:furnace_heater", "techage:furnace_heater_on"}, Cable, "con", {"B", "F", "L", "D", "U"})
-
-minetest.register_craft({
-	output = "techage:furnace_heater",
-	recipe = {
-		{'techage:aluminum', 'default:steel_ingot', 'techage:aluminum'},
-		{'techage:basalt_stone', 'basic_materials:heating_element', 'techage:basalt_stone'},
-		{'techage:aluminum', 'techage:ta4_furnace_ceramic', 'techage:aluminum'},
-	},
-})
 
 techage.register_node({"techage:furnace_heater", "techage:furnace_heater_on"}, {
 	-- called from furnace_top
@@ -148,16 +114,23 @@ techage.register_node({"techage:furnace_heater", "techage:furnace_heater_on"}, {
 		elseif topic == "start" and not nvm.running then
 			if power.power_available(pos, Cable) then
 				nvm.running = true
-				power.consumer_start(pos, Cable, CYCLE_TIME)
 				minetest.get_node_timer(pos):start(CYCLE_TIME)
 				return true
 			end
 		elseif topic == "stop" and nvm.running then
 			nvm.running = false
 			swap_node(pos, "techage:furnace_heater")
-			power.consumer_stop(pos, Cable)
 			minetest.get_node_timer(pos):stop()
 			return true
 		end
 	end
 })	
+
+minetest.register_craft({
+	output = "techage:furnace_heater",
+	recipe = {
+		{'techage:aluminum', 'default:steel_ingot', 'techage:aluminum'},
+		{'techage:basalt_stone', 'basic_materials:heating_element', 'techage:basalt_stone'},
+		{'techage:aluminum', 'techage:ta4_furnace_ceramic', 'techage:aluminum'},
+	},
+})

init.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -13,7 +13,7 @@
 techage = {}
 
 -- Version for compatibility checks, see readme.md/history
-techage.version = 0.26
+techage.version = 1.00
 
 if minetest.global_exists("tubelib") then
 	minetest.log("error", "[techage] Techage can't be used together with the mod tubelib!")
@@ -113,10 +113,10 @@ dofile(MP.."/power/powerswitchbox_legacy.lua")
 dofile(MP.."/power/powerswitchbox.lua")
 dofile(MP.."/power/powerswitch.lua")
 dofile(MP.."/power/protection.lua")
---dofile(MP.."/power/power_line.lua")
+dofile(MP.."/power/power_line.lua")
---dofile(MP.."/power/ta4_cable.lua")
+dofile(MP.."/power/ta4_cable.lua")
---dofile(MP.."/power/ta4_cable_wall_entry.lua")
+dofile(MP.."/power/ta4_cable_wall_entry.lua")
---dofile(MP.."/power/laser.lua")
+dofile(MP.."/power/laser.lua")
 
 -- Iron Age
 dofile(MP.."/iron_age/main.lua")
@@ -143,8 +143,8 @@ dofile(MP.."/steam_engine/flywheel.lua")
 
 -- Liquids I
 dofile(MP.."/liquids/liquid_pipe.lua")
---dofile(MP.."/liquids/valve.lua")
+dofile(MP.."/liquids/valve.lua")
---dofile(MP.."/liquids/pipe_wall_entry.lua")
+dofile(MP.."/liquids/pipe_wall_entry.lua")
 
 -- Basic Machines
 dofile(MP.."/basic_machines/consumer.lua")  -- consumer base model
@@ -165,15 +165,15 @@ dofile(MP.."/basic_machines/ta4_chest.lua")
 dofile(MP.."/basic_machines/ta4_injector.lua")
 dofile(MP.."/basic_machines/itemsource.lua")
 dofile(MP.."/basic_machines/recycler.lua")
---dofile(MP.."/basic_machines/concentrator.lua")
+dofile(MP.."/basic_machines/concentrator.lua")
 
 -- Liquids II
---dofile(MP.."/liquids/tank.lua")
+dofile(MP.."/liquids/tank.lua")
---dofile(MP.."/liquids/filler.lua")
+dofile(MP.."/liquids/filler.lua")
---dofile(MP.."/liquids/silo.lua")
+dofile(MP.."/liquids/silo.lua")
---dofile(MP.."/liquids/pump.lua")
+dofile(MP.."/liquids/pump.lua")
---dofile(MP.."/liquids/waterpump.lua")
+dofile(MP.."/liquids/waterpump.lua")
---dofile(MP.."/liquids/waterinlet.lua")
+dofile(MP.."/liquids/waterinlet.lua")
 
 -- Coal power station
 dofile(MP.."/coal_power_station/firebox.lua")
@@ -185,19 +185,19 @@ dofile(MP.."/coal_power_station/cooler.lua")
 dofile(MP.."/coal_power_station/oilfirebox.lua")
 
 -- Industrial Furnace
---dofile(MP.."/furnace/firebox.lua")
+dofile(MP.."/furnace/firebox.lua")
---dofile(MP.."/furnace/cooking.lua")
+dofile(MP.."/furnace/cooking.lua")
---dofile(MP.."/furnace/furnace_top.lua")
+dofile(MP.."/furnace/furnace_top.lua")
---dofile(MP.."/furnace/booster.lua")
+dofile(MP.."/furnace/booster.lua")
---dofile(MP.."/furnace/heater.lua")
+dofile(MP.."/furnace/heater.lua")
---dofile(MP.."/furnace/recipes.lua")
+dofile(MP.."/furnace/recipes.lua")
 
 -- Tools
 dofile(MP.."/tools/trowel.lua")
---dofile(MP.."/tools/repairkit.lua")
+dofile(MP.."/tools/repairkit.lua")
---dofile(MP.."/tools/pipe_wrench.lua")
+dofile(MP.."/tools/pipe_wrench.lua")
---dofile(MP.."/basic_machines/blackhole.lua")
+dofile(MP.."/basic_machines/blackhole.lua")
---dofile(MP.."/basic_machines/forceload.lua")
+dofile(MP.."/basic_machines/forceload.lua")
 
 -- Lamps
 dofile(MP.."/lamps/lib.lua")
@@ -214,19 +214,19 @@ dofile(MP.."/lamps/growlight.lua")
 dofile(MP.."/lamps/lampholder.lua")
 
 -- Oil
---dofile(MP.."/oil/explore.lua")
+dofile(MP.."/oil/explore.lua")
---dofile(MP.."/oil/tower.lua")
+dofile(MP.."/oil/tower.lua")
---dofile(MP.."/oil/drillbox.lua")
+dofile(MP.."/oil/drillbox.lua")
---dofile(MP.."/oil/pumpjack.lua")
+dofile(MP.."/oil/pumpjack.lua")
---dofile(MP.."/oil/distiller.lua")
+dofile(MP.."/oil/distiller.lua")
---dofile(MP.."/oil/reboiler.lua")
+dofile(MP.."/oil/reboiler.lua")
---  --  dofile(MP.."/oil/gasflare.lua")
+--  dofile(MP.."/oil/gasflare.lua")
 
 -- TA3 power based
---dofile(MP.."/ta3_power/tiny_generator.lua")
+dofile(MP.."/ta3_power/tiny_generator.lua")
 dofile(MP.."/ta3_power/akkubox.lua")
---dofile(MP.."/ta3_power/axle2power.lua")
+dofile(MP.."/ta3_power/axle2power.lua")
---dofile(MP.."/ta3_power/power2axle.lua")
+dofile(MP.."/ta3_power/power2axle.lua")
 
 -- Digtron
 --if minetest.global_exists("digtron") then
@@ -262,9 +262,9 @@ dofile(MP.."/recipe_checker.lua")
 dofile(MP.."/.test/sink.lua")
 
 -- Solar
---dofile(MP.."/solar/minicell.lua")
+dofile(MP.."/solar/minicell.lua")
---dofile(MP.."/solar/solarcell.lua")
+dofile(MP.."/solar/solarcell.lua")
---dofile(MP.."/solar/inverter.lua")
+dofile(MP.."/solar/inverter.lua")
 
 -- Wind
 --dofile(MP.."/wind_turbine/rotor.lua")
@@ -311,14 +311,14 @@ dofile(MP.."/lua_controller/controller.lua")
 --dofile(MP.."/lua_controller/terminal.lua")
 
 -- Items
---dofile(MP.."/items/registered_nodes.lua")
+dofile(MP.."/items/registered_nodes.lua")
---dofile(MP.."/items/barrel.lua")
+dofile(MP.."/items/barrel.lua")
---dofile(MP.."/items/baborium.lua")
+dofile(MP.."/items/baborium.lua")
---dofile(MP.."/items/usmium.lua")
+dofile(MP.."/items/usmium.lua")
---dofile(MP.."/items/lye.lua")
+dofile(MP.."/items/lye.lua")
---dofile(MP.."/items/oil.lua")
+dofile(MP.."/items/oil.lua")
---dofile(MP.."/items/petroleum.lua")
+dofile(MP.."/items/petroleum.lua")
---dofile(MP.."/items/bauxit.lua")
+dofile(MP.."/items/bauxit.lua")
 --dofile(MP.."/items/silicon.lua")
 --dofile(MP.."/items/steelmat.lua")
 --dofile(MP.."/items/powder.lua")

items/filling.lua

@@ -26,4 +26,5 @@ techage.FILLING_ITEMS = {
 	"default:goldblock",
 	"default:mese",
 	"default:diamondblock",
+        "techage:power_pole3",
 }

liquids/liquid_pipe.lua

@@ -165,12 +165,12 @@ local names = networks.register_junction("techage:ta3_junctionpipe", 1/8, Boxes,
 	sounds = default.node_sound_metal_defaults(),
 
 	after_place_node = function(pos, placer, itemstack, pointed_thing)
-		local name = "techage:ta3_junctionpipe"..techage.junction_type(pos, Pipe)
+		local name = "techage:ta3_junctionpipe" .. networks.junction_type(pos, Pipe)
 		minetest.swap_node(pos, {name = name, param2 = 0})
 		Pipe:after_place_node(pos)
 	end,
 	tubelib2_on_update2 = function(pos, dir1, tlib2, node)
-		local name = "techage:ta3_junctionpipe"..techage.junction_type(pos, Pipe)
+		local name = "techage:ta3_junctionpipe" .. networks.junction_type(pos, Pipe)
 		minetest.swap_node(pos, {name = name, param2 = 0})
 		power.update_network(pos, 0, tlib2, node)
 	end,

liquids/node_api.lua

@@ -1,245 +0,0 @@
---[[
-
-	TechAge
-	=======
-
-	Copyright (C) 2019-2020 Joachim Stolberg
-
-	AGPL v3
-	See LICENSE.txt for more information
-	
-	Liquid transportation API via Pipe(s) (peer, put, take)
-
-]]--
-
-local P2S = minetest.pos_to_string
-local M = minetest.get_meta
-local N = function(pos) return minetest.get_node(pos).name end
-local LQD = function(pos) return (minetest.registered_nodes[techage.get_node_lvm(pos).name] or {}).liquid end
-local Pipe = techage.LiquidPipe
-local S = techage.S
-
-local net_def = techage.networks.net_def
-local networks = techage.networks
-
-local liquid = techage.liquid
-
---
--- Networks
---
-
--- determine network ID (largest hash number of all pumps)
-local function determine_netID(pos, outdir)
-	local netID = 0
-	networks.connection_walk(pos, outdir, Pipe, function(pos, indir, node)
-		local ntype = net_def(pos, "pipe2").ntype
-		if ntype and ntype == "pump" then
-			local new = minetest.hash_node_position(pos) * 8 + outdir
-			if netID <= new then
-				netID = new
-			end
-		end
-	end)
-	return netID
-end
-
--- store network ID on each pump like node
-local function store_netID(pos, outdir, netID)
-	networks.connection_walk(pos, outdir, Pipe, function(pos, indir, node)
-		local ntype = net_def(pos, "pipe2").ntype
-		if ntype and ntype == "pump" then
-			local nvm = techage.get_nvm(pos)
-			local outdir = networks.Flip[indir]
-			nvm.pipe2 = nvm.pipe2 or {}
-			nvm.pipe2.netIDs = nvm.pipe2.netIDs or {}
-			nvm.pipe2.netIDs[outdir] = netID
-		end
-	end)
-end
-
--- delete network and ID on each pump like node
-local function delete_netID(pos, outdir)
-	local netID = 0
-	networks.connection_walk(pos, outdir, Pipe, function(pos, indir, node)
-		local ntype = net_def(pos, "pipe2").ntype
-		if ntype and ntype == "pump" then
-			local nvm = techage.get_nvm(pos)
-			local outdir = networks.Flip[indir]
-			if nvm.pipe2 and nvm.pipe2.netIDs and nvm.pipe2.netIDs[outdir] then
-				netID = nvm.pipe2.netIDs[outdir]
-				nvm.pipe2.netIDs[outdir] = nil
-			end
-		end
-	end)
-	networks.delete_network("pipe2", netID)
-end
-
-local function get_netID(pos, outdir)
-	local nvm = techage.get_nvm(pos)
-	if not nvm.pipe2 or not nvm.pipe2.netIDs or not nvm.pipe2.netIDs[outdir] then
-		local netID = determine_netID(pos, outdir)
-		store_netID(pos, outdir, netID)
-	end
-	return nvm.pipe2 and nvm.pipe2.netIDs and nvm.pipe2.netIDs[outdir]
-end
-
--- return list of nodes {pos = ..., indir = ...} of given type
-local function get_network_table(pos, outdir, ntype)
-	local netID = get_netID(pos, outdir)
-	if netID then
-		local netw = networks.get_network("pipe2", netID)
-		if not netw then
-			netw = networks.collect_network_nodes(pos, outdir, Pipe)
-			networks.set_network("pipe2", netID, netw)
-		end
-		if not netw[ntype] then -- connection lost (e.g. tank cart)?
-			-- reactivate network
-			networks.node_connections(pos, Pipe)
-			delete_netID(pos, outdir)
-		end
-		--print("netw", string.format("%012X", netID),  dump(netw[ntype]))
-		return netw[ntype] or {}
-	end
-	return {}
-end
-
-
---
--- Client remote functions
---
-
--- Determine and return liquid 'name' from the
--- remote inventory.
-function liquid.peek(pos, outdir)
-	for _,item in ipairs(get_network_table(pos, outdir, "tank")) do
-		local liq = LQD(item.pos)
-		if liq and liq.peek then
-			return liq.peek(item.pos, item.indir)
-		end
-	end
-end
-
--- Add given amount of liquid to the remote inventory.
--- return leftover amount
-function liquid.put(pos, outdir, name, amount, player_name)
-	for _,item in ipairs(get_network_table(pos, outdir, "tank")) do
-		local liq = LQD(item.pos)
-		if liq and liq.put and liq.peek then
-			-- wrong items?
-			local peek = liq.peek(item.pos, item.indir)
-			if peek and peek ~= name then return amount or 0 end
-			if player_name then
-				local num = techage.get_node_number(pos) or "000"
-				techage.mark_position(player_name, item.pos, "("..num..") put", "", 1)
-			end
-			amount = liq.put(item.pos, item.indir, name, amount)
-			if not amount or amount == 0 then break end
-		end
-	end
-	return amount or 0
-end
-
--- Take given amount of liquid from the remote inventory.
--- return taken amount and item name
-function liquid.take(pos, outdir, name, amount, player_name)
-	local taken = 0
-	for _,item in ipairs(get_network_table(pos, outdir, "tank")) do
-		local liq = LQD(item.pos)
-		if liq and liq.take then
-			if player_name then
-				local num = techage.get_node_number(pos)
-				techage.mark_position(player_name, item.pos, "("..num..") take", "", 1)
-			end
-			taken, name = liq.take(item.pos, item.indir, name, amount)
-			if taken and name and taken > 0 then
-				break 
-			end
-		end
-	end
-	return taken, name
-end
-
-function liquid.untake(pos, outdir, name, amount)
-	for _,item in ipairs(get_network_table(pos, outdir, "tank")) do
-		local liq = LQD(item.pos)
-		if liq and liq.untake then
-			amount = liq.untake(item.pos, item.indir, name, amount)
-			if not amount or amount == 0 then break end
-		end
-	end
-	return amount or 0
-end
-
---
--- Server local functions
---
-
-function liquid.srv_peek(pos, indir)
-	local nvm = techage.get_nvm(pos)
-	nvm.liquid = nvm.liquid or {}
-	return nvm.liquid.name
-end
-
-function liquid.srv_put(pos, indir, name, amount)
-	local nvm = techage.get_nvm(pos)
-	nvm.liquid = nvm.liquid or {}
-	amount = amount or 0
-	if not nvm.liquid.name then
-		nvm.liquid.name = name
-		nvm.liquid.amount = amount
-		return 0
-	elseif nvm.liquid.name == name then
-		nvm.liquid.amount = nvm.liquid.amount or 0
-		local capa = LQD(pos).capa
-		if nvm.liquid.amount + amount <= capa then
-			nvm.liquid.amount = nvm.liquid.amount + amount
-			return 0
-		else
-			local rest = nvm.liquid.amount + amount - capa
-			nvm.liquid.amount = capa
-			return rest
-		end
-	end
-	return amount
-end
-
-function liquid.srv_take(pos, indir, name, amount)
-	local nvm = techage.get_nvm(pos)
-	nvm.liquid = nvm.liquid or {}
-	amount = amount or 0
-	if not name or nvm.liquid.name == name then
-		name = nvm.liquid.name
-		nvm.liquid.amount = nvm.liquid.amount or 0
-		if nvm.liquid.amount > amount then
-			nvm.liquid.amount = nvm.liquid.amount - amount
-			return amount, name
-		else 
-			local rest = nvm.liquid.amount
-			local name = nvm.liquid.name
-			nvm.liquid.amount = 0
-			nvm.liquid.name = nil
-			return rest, name
-		end
-	end
-	return 0
-end
-
-
--- To be called from each node via 'tubelib2_on_update2'
--- 'output' is optional and only needed for nodes with dedicated
--- pipe sides (e.g. pumps).
-function liquid.update_network(pos, outdir)
-	networks.node_connections(pos, Pipe)
-	delete_netID(pos, outdir)
-end
-
--- To be called from each pump in 'after_dig_node'
--- before calling 'techage.del_mem(pos)'
-function liquid.after_dig_pump(pos)
-	local nvm = techage.get_nvm(pos)
-	if nvm.pipe2 and nvm.pipe2.netIDs then
-		for outdir, netID in pairs(nvm.pipe2.netIDs) do
-			networks.delete_network("pipe2", netID)
-		end
-	end
-end

liquids/pump.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -17,35 +17,14 @@ local P2S = minetest.pos_to_string
 local M = minetest.get_meta
 local S = techage.S
 local Pipe = techage.LiquidPipe
-local networks = techage.networks
+local liquid = networks.liquid
-local liquid = techage.liquid
+local Flip = networks.Flip
-local Flip = techage.networks.Flip
 
 local STANDBY_TICKS = 3
 local COUNTDOWN_TICKS = 4
 local CYCLE_TIME = 2
 local CAPA = 4
 
--- to mark the pump source and destinstion node
-local DebugCache = {}
-
-local function set_starter_name(pos, clicker)
-	local key = minetest.hash_node_position(pos)
-	DebugCache[key] = {starter = clicker:get_player_name(), count = 10}
-end
-
-local function get_starter_name(pos)
-	local key = minetest.hash_node_position(pos)
-	local def = DebugCache[key]
-	if def then
-		def.count = (def.count or 0) - 1
-		if def.count > 0 then
-			return def.starter
-		end
-		DebugCache[key] = nil
-	end
-end
-
 local State3 = techage.NodeStates:new({
 	node_name_passive = "techage:t3_pump",
 	node_name_active = "techage:t3_pump_on",
@@ -63,14 +42,15 @@ local State4 = techage.NodeStates:new({
 })
 
 local function pumping(pos, nvm, state, capa)
+	local mem = techage.get_mem(pos)
+	mem.dbg_cycles = (mem.dbg_cycles or 0) - 1
 	local outdir = M(pos):get_int("outdir")
-	local starter = get_starter_name(pos)
 	--print("pumping", outdir, Flip[outdir])
-	local taken, name = liquid.take(pos, Flip[outdir], nil, capa, starter)
+	local taken, name = liquid.take(pos, Pipe, Flip[outdir], nil, capa, mem.dbg_cycles > 0)
 	if taken > 0 then
-		local leftover = liquid.put(pos, outdir, name, taken, starter)
+		local leftover = liquid.put(pos, Pipe, outdir, name, taken, mem.dbg_cycles > 0)
-		if leftover then
+		if leftover and leftover > 0 then
-			liquid.untake(pos, Flip[outdir], name, leftover)
+			liquid.untake(pos, Pipe, Flip[outdir], name, leftover)
 			if leftover == taken then
 				state:blocked(pos, nvm)
 				return
@@ -117,25 +97,22 @@ local function on_rightclick(pos, node, clicker)
 	
 	local nvm = techage.get_nvm(pos)
 	if node.name == "techage:t3_pump" then
-		set_starter_name(pos, clicker)
+		local mem = techage.get_mem(pos)
+		mem.dbg_cycles = 5
 		State3:start(pos, nvm)
 	elseif node.name == "techage:t3_pump_on" then
 		State3:stop(pos, nvm)
 	elseif node.name == "techage:t4_pump" then
-		set_starter_name(pos, clicker)
+		local mem = techage.get_mem(pos)
+		mem.dbg_cycles = 5
 		State4:start(pos, nvm)
 	elseif node.name == "techage:t4_pump_on" then
 		State4:stop(pos, nvm)
 	end
 end
 
-local function tubelib2_on_update2(pos, outdir, tlib2, node)
-	liquid.update_network(pos, outdir)
-end
-
 local function after_dig_node(pos, oldnode, oldmetadata, digger)
 	Pipe:after_dig_node(pos)
-	liquid.after_dig_pump(pos)
 	techage.del_mem(pos)
 end
 
@@ -215,23 +192,14 @@ local ta4_tiles_act = {
 	},
 }
 
-local nworks = {
-	pipe2 = {
-		sides = {L = 1, R = 1}, -- Pipe connection side
-		ntype = "pump",
-	},
-}
-
 minetest.register_node("techage:t3_pump", {
 	description = S("TA3 Pump"),
 	tiles = ta3_tiles_pas,
 	after_place_node = after_place_node3,
 	on_rightclick = on_rightclick,
-	tubelib2_on_update2 = tubelib2_on_update2,
 	on_timer = node_timer3,
 	after_dig_node = after_dig_node,
 	on_rotate = screwdriver.disallow,
-	networks = nworks,
 	paramtype2 = "facedir",
 	on_rotate = screwdriver.disallow,
 	groups = {cracky=2},
@@ -244,11 +212,9 @@ minetest.register_node("techage:t3_pump_on", {
 	tiles = ta3_tiles_act,
 	--after_place_node = after_place_node3,
 	on_rightclick = on_rightclick,
-	tubelib2_on_update2 = tubelib2_on_update2,
 	on_timer = node_timer3,
 	after_dig_node = after_dig_node,
 	on_rotate = screwdriver.disallow,
-	networks = nworks,
 	paramtype2 = "facedir",
 	on_rotate = screwdriver.disallow,
 	diggable = false,
@@ -262,11 +228,9 @@ minetest.register_node("techage:t4_pump", {
 	tiles = ta4_tiles_pas,
 	after_place_node = after_place_node4,
 	on_rightclick = on_rightclick,
-	tubelib2_on_update2 = tubelib2_on_update2,
 	on_timer = node_timer4,
 	after_dig_node = after_dig_node,
 	on_rotate = screwdriver.disallow,
-	networks = nworks,
 	paramtype2 = "facedir",
 	on_rotate = screwdriver.disallow,
 	groups = {cracky=2},
@@ -279,11 +243,9 @@ minetest.register_node("techage:t4_pump_on", {
 	tiles = ta4_tiles_act,
 	--after_place_node = after_place_node4,
 	on_rightclick = on_rightclick,
-	tubelib2_on_update2 = tubelib2_on_update2,
 	on_timer = node_timer4,
 	after_dig_node = after_dig_node,
 	on_rotate = screwdriver.disallow,
-	networks = nworks,
 	paramtype2 = "facedir",
 	on_rotate = screwdriver.disallow,
 	diggable = false,
@@ -304,10 +266,11 @@ techage.register_node({"techage:t4_pump", "techage:t4_pump_on"}, {
 	end,
 })
 
-Pipe:add_secondary_node_names({
+-- Pumps have to provide one output and one input side
+liquid.register_nodes({
 	"techage:t3_pump", "techage:t3_pump_on",
 	"techage:t4_pump", "techage:t4_pump_on",
-})
+}, Pipe, "pump", {"L", "R"}, {})
 
 minetest.register_craft({
 	output = "techage:t3_pump 2",

liquids/silo.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -18,7 +18,7 @@ local M = minetest.get_meta
 local S = techage.S
 local LQD = function(pos) return (minetest.registered_nodes[techage.get_node_lvm(pos).name] or {}).liquid end
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local liquid = networks.liquid
 
 local INV_SIZE = 8
 local STACKMAX = 99
@@ -170,13 +170,6 @@ local tLiquid = {
 	end,
 }
 
-local tNetworks = {
-	pipe2 = {
-		sides = techage.networks.AllSides, -- Pipe connection sides
-		ntype = "tank",
-	},
-}
-
 minetest.register_node("techage:ta3_silo", {
 	description = S("TA3 Silo"),
 	tiles = {
@@ -203,16 +196,11 @@ minetest.register_node("techage:ta3_silo", {
 		meta:set_string("infotext", S("TA3 Silo").." "..number)
 		Pipe:after_place_node(pos)
 	end,
-	tubelib2_on_update2 = function(pos, outdir, tlib2, node)
-		liquid.update_network(pos, outdir)
-	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_node(pos)
 		techage.remove_node(pos, oldnode, oldmetadata)
 		techage.del_mem(pos)
 	end,
-	liquid = tLiquid,
-	networks = tNetworks,
 	can_dig = can_dig,
 	allow_metadata_inventory_put = allow_metadata_inventory_put,
 	allow_metadata_inventory_take = allow_metadata_inventory_take,
@@ -249,16 +237,11 @@ minetest.register_node("techage:ta4_silo", {
 		meta:set_string("infotext", S("TA4 Silo").." "..number)
 		Pipe:after_place_node(pos)
 	end,
-	tubelib2_on_update2 = function(pos, outdir, tlib2, node)
-		liquid.update_network(pos, outdir)
-	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_node(pos)
 		techage.remove_node(pos, oldnode, oldmetadata)
 		techage.del_mem(pos)
 	end,
-	liquid = tLiquid,
-	networks = tNetworks,
 	can_dig = can_dig,
 	allow_metadata_inventory_put = allow_metadata_inventory_put,
 	allow_metadata_inventory_take = allow_metadata_inventory_take,
@@ -335,7 +318,7 @@ techage.register_node({"techage:ta3_silo", "techage:ta4_silo"}, {
 	end,
 })	
 
-Pipe:add_secondary_node_names({"techage:ta3_silo", "techage:ta4_silo"})
+liquid.register_nodes({"techage:ta3_silo", "techage:ta4_silo"},	Pipe, "tank", nil, tLiquid)
 
 minetest.register_craft({
 	output = "techage:ta3_silo",

liquids/tank.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -15,23 +15,25 @@
 local S2P = minetest.string_to_pos
 local P2S = minetest.pos_to_string
 local M = minetest.get_meta
+local N = tubelib2.get_node_lvm
+local LQD = function(pos) return (minetest.registered_nodes[N(pos).name] or {}).liquid end
 local S = techage.S
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local liquid = networks.liquid
 
 local CAPACITY = 1000
 
 local function on_rightclick(pos, node, clicker)
 	local nvm = techage.get_nvm(pos)
 	techage.set_activeformspec(pos, clicker)
-	M(pos):set_string("formspec", liquid.formspec(pos, nvm))
+	M(pos):set_string("formspec", techage.liquid.formspec(pos, nvm))
 	minetest.get_node_timer(pos):start(2)
 end
 
 local function node_timer(pos, elapsed)
 	if techage.is_activeformspec(pos) then
 		local nvm = techage.get_nvm(pos)
-		M(pos):set_string("formspec", liquid.formspec(pos, nvm))
+		M(pos):set_string("formspec", techage.liquid.formspec(pos, nvm))
 		return true
 	end	
 	return false
@@ -41,14 +43,19 @@ local function can_dig(pos, player)
 	if minetest.is_protected(pos, player:get_player_name()) then
 		return false
 	end
-	return liquid.is_empty(pos)
+	return techage.liquid.is_empty(pos)
+end
+
+local function peek_liquid(pos)
+	local nvm = techage.get_nvm(pos)
+	return liquid.srv_peek(nvm)
 end
 
 local function take_liquid(pos, indir, name, amount)
-	amount, name = liquid.srv_take(pos, indir, name, amount)
+	local nvm = techage.get_nvm(pos)
+	amount, name = liquid.srv_take(nvm, name, amount)
 	if techage.is_activeformspec(pos) then
-		local nvm = techage.get_nvm(pos)
+		M(pos):set_string("formspec", techage.liquid.formspec(pos, nvm))
-		M(pos):set_string("formspec", liquid.formspec(pos, nvm))
 	end
 	return amount, name
 end
@@ -57,10 +64,10 @@ local function put_liquid(pos, indir, name, amount)
 	-- check if it is not powder
 	local ndef = minetest.registered_craftitems[name] or {}
 	if not ndef.groups or ndef.groups.powder ~= 1 then
-		local leftover = liquid.srv_put(pos, indir, name, amount)
+		local nvm = techage.get_nvm(pos)
+		local leftover = liquid.srv_put(nvm, name, amount, LQD(pos).capa)
 		if techage.is_activeformspec(pos) then
-			local nvm = techage.get_nvm(pos)
+			M(pos):set_string("formspec", techage.liquid.formspec(pos, nvm))
-			M(pos):set_string("formspec", liquid.formspec(pos, nvm))
 		end
 		return leftover
 	end
@@ -68,21 +75,14 @@ local function put_liquid(pos, indir, name, amount)
 end
 
 local function untake_liquid(pos, indir, name, amount)
-	local leftover = liquid.srv_put(pos, indir, name, amount)
+	local nvm = techage.get_nvm(pos)
+	local leftover = liquid.srv_put(nvm, name, amount, LQD(pos).capa)
 	if techage.is_activeformspec(pos) then
-		local nvm = techage.get_nvm(pos)
+		M(pos):set_string("formspec", techage.liquid.formspec(pos, nvm))
-		M(pos):set_string("formspec", liquid.formspec(pos, nvm))
 	end
 	return leftover
 end
 
-local networks_def = {
-	pipe2 = {
-		sides = techage.networks.AllSides, -- Pipe connection sides
-		ntype = "tank",
-	},
-}
-
 minetest.register_node("techage:ta3_tank", {
 	description = S("TA3 Tank"),
 	tiles = {
@@ -101,27 +101,16 @@ minetest.register_node("techage:ta3_tank", {
 		local number = techage.add_node(pos, "techage:ta3_tank")
 		meta:set_string("node_number", number)
 		meta:set_string("owner", placer:get_player_name())
-		meta:set_string("formspec", liquid.formspec(pos, nvm))
+		meta:set_string("formspec", techage.liquid.formspec(pos, nvm))
 		meta:set_string("infotext", S("TA3 Tank").." "..number)
 		Pipe:after_place_node(pos)
 	end,
-	tubelib2_on_update2 = function(pos, outdir, tlib2, node)
-		liquid.update_network(pos, outdir)
-	end,
 	on_timer = node_timer,
-	on_punch = liquid.on_punch,
+	on_punch = techage.liquid.on_punch,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_node(pos)
 		techage.remove_node(pos, oldnode, oldmetadata)
 	end,
-	liquid = {
-		capa = CAPACITY,
-		peek = liquid.srv_peek,
-		put = put_liquid,
-		take = take_liquid,
-		untake = untake_liquid,
-	},
-	networks = networks_def,
 	on_rightclick = on_rightclick,
 	can_dig = can_dig,
 	paramtype2 = "facedir",
@@ -131,6 +120,16 @@ minetest.register_node("techage:ta3_tank", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
+liquid.register_nodes({"techage:ta3_tank"},
+	Pipe, "tank", nil, {
+		capa = CAPACITY,
+		peek = peek_liquid,
+		put = put_liquid,
+		take = take_liquid,
+		untake = untake_liquid,
+	}
+)
+
 minetest.register_node("techage:oiltank", {
 	description = S("Oil Tank"),
 	tiles = {
@@ -161,27 +160,16 @@ minetest.register_node("techage:oiltank", {
 		local number = techage.add_node(pos, "techage:oiltank")
 		meta:set_string("node_number", number)
 		meta:set_string("owner", placer:get_player_name())
-		meta:set_string("formspec", liquid.formspec(pos, nvm))
+		meta:set_string("formspec", techage.liquid.formspec(pos, nvm))
 		meta:set_string("infotext", S("Oil Tank").." "..number)
 		Pipe:after_place_node(pos)
 	end,
-	tubelib2_on_update2 = function(pos, outdir, tlib2, node)
-		liquid.update_network(pos, outdir)
-	end,
 	on_timer = node_timer,
-	on_punch = liquid.on_punch,
+	on_punch = techage.liquid.on_punch,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_node(pos)
 		techage.remove_node(pos, oldnode, oldmetadata)
 	end,
-	liquid = {
-		capa = CAPACITY * 4,
-		peek = liquid.srv_peek,
-		put = put_liquid,
-		take = take_liquid,
-		untake = untake_liquid,
-	},
-	networks = networks_def,
 	on_rightclick = on_rightclick,
 	can_dig = can_dig,
 	paramtype2 = "facedir",
@@ -191,6 +179,16 @@ minetest.register_node("techage:oiltank", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
+liquid.register_nodes({"techage:oiltank"},
+	Pipe, "tank", nil, {
+		capa = CAPACITY * 4,
+		peek = peek_liquid,
+		put = put_liquid,
+		take = take_liquid,
+		untake = untake_liquid,
+	}
+)
+
 minetest.register_node("techage:ta4_tank", {
 	description = S("TA4 Tank"),
 	tiles = {
@@ -210,13 +208,10 @@ minetest.register_node("techage:ta4_tank", {
 		local number = techage.add_node(pos, "techage:ta4_tank")
 		meta:set_string("node_number", number)
 		meta:set_string("owner", placer:get_player_name())
-		meta:set_string("formspec", liquid.formspec(pos, nvm))
+		meta:set_string("formspec", techage.liquid.formspec(pos, nvm))
 		meta:set_string("infotext", S("TA4 Tank").." "..number)
 		Pipe:after_place_node(pos)
 	end,
-	tubelib2_on_update2 = function(pos, outdir, tlib2, node)
-		liquid.update_network(pos, outdir)
-	end,
 	on_receive_fields = function(pos, formname, fields, player)
 		if minetest.is_protected(pos, player:get_player_name()) then
 			return
@@ -226,19 +221,11 @@ minetest.register_node("techage:ta4_tank", {
 		end
 	end,
 	on_timer = node_timer,
-	on_punch = liquid.on_punch,
+	on_punch = techage.liquid.on_punch,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_node(pos)
 		techage.remove_node(pos, oldnode, oldmetadata)
 	end,
-	liquid = {
-		capa = CAPACITY * 2,
-		peek = liquid.srv_peek,
-		put = put_liquid,
-		take = take_liquid,
-		untake = untake_liquid,
-	},
-	networks = networks_def,
 	on_rightclick = on_rightclick,
 	can_dig = can_dig,
 	paramtype2 = "facedir",
@@ -248,9 +235,17 @@ minetest.register_node("techage:ta4_tank", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
-techage.register_node({"techage:ta3_tank", "techage:ta4_tank", "techage:oiltank"}, liquid.recv_message)	
+liquid.register_nodes({"techage:ta4_tank"},
+	Pipe, "tank", nil, {
+		capa = CAPACITY * 2,
+		peek = peek_liquid,
+		put = put_liquid,
+		take = take_liquid,
+		untake = untake_liquid,
+	}
+)
 
-Pipe:add_secondary_node_names({"techage:ta3_tank", "techage:ta4_tank", "techage:oiltank"})
+techage.register_node({"techage:ta3_tank", "techage:ta4_tank", "techage:oiltank"}, techage.liquid.recv_message)	
 
 minetest.register_craft({
 	output = "techage:ta3_tank 2",

liquids/valve.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -17,73 +17,7 @@ local P2S = minetest.pos_to_string
 local M = minetest.get_meta
 local S = techage.S
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local liquid = networks.liquid
-
-local function switch_node(pos, node)
-	if node.name == "techage:ta3_valve_open" then
-		node.name = "techage:ta3_valve_closed"
-		--node.name = "default:dirt"
-		minetest.swap_node(pos, node)
-		local number = M(pos):get_string("node_number")
-		M(pos):set_string("infotext", S("TA3 Valve closed")..": "..number)
-		Pipe:after_dig_tube(pos, {name = "techage:ta3_valve_open", param2 = node.param2})
-	elseif node.name == "techage:ta3_valve_closed" then
-		node.name = "techage:ta3_valve_open"
-		minetest.swap_node(pos, node)	
-		local number = M(pos):get_string("node_number")
-		M(pos):set_string("infotext", S("TA3 Valve open")..": "..number)
-		Pipe:after_place_tube(pos)
-	end
-	minetest.sound_play("techage_valve", {
-		pos = pos, 
-		gain = 1,
-		max_hear_distance = 10})
-end
-
-local function on_rightclick(pos, node, clicker)
-	if not minetest.is_protected(pos, clicker:get_player_name()) then
-		switch_node(pos, node)
-	end
-end
-
---local function node_timer(pos, elapsed)
---	if techage.is_activeformspec(pos) then
---		local nvm = techage.get_nvm(pos)
---		M(pos):set_string("formspec", liquid.formspec(pos, nvm))
---		return true
---	end	
---	return false
---end
-
---local function can_dig(pos, player)
---	if minetest.is_protected(pos, player:get_player_name()) then
---		return false
---	end
---	return liquid.is_empty(pos)
---end
-
---local function take_liquid(pos, indir, name, amount)
---	amount, name = liquid.srv_take(pos, indir, name, amount)
---	if techage.is_activeformspec(pos) then
---		local nvm = techage.get_nvm(pos)
---		M(pos):set_string("formspec", liquid.formspec(pos, nvm))
---	end
---	return amount, name
---end
-	
---local function put_liquid(pos, indir, name, amount)
---	-- check if it is not powder
---	local ndef = minetest.registered_craftitems[name] or {}
---	if not ndef.groups or ndef.groups.powder ~= 1 then
---		local leftover = liquid.srv_put(pos, indir, name, amount)
---		if techage.is_activeformspec(pos) then
---			local nvm = techage.get_nvm(pos)
---			M(pos):set_string("formspec", liquid.formspec(pos, nvm))
---		end
---		return leftover
---	end
---	return amount
---end
 
 minetest.register_node("techage:ta3_valve_open", {
 	description = S("TA Valve"),
@@ -102,21 +36,24 @@ minetest.register_node("techage:ta3_valve_open", {
 			return true
 		end
 		local meta = M(pos)
-		local nvm = techage.get_nvm(pos)
-		nvm.liquid = {}
 		local number = techage.add_node(pos, "techage:ta3_valve_closed")
 		meta:set_string("node_number", number)
 		meta:set_string("owner", placer:get_player_name())
-		meta:set_string("infotext", S("TA3 Valve open")..": "..number)
+		meta:set_string("infotext", S("TA3 Valve")..": "..number)
 		return false
 	end,
-	
+	on_rightclick = function(pos, node, clicker)
+		if liquid.turn_valve_off(pos, Pipe, "techage:ta3_valve_closed", "techage:ta3_valve_open") then
+			minetest.sound_play("techage_valve", {
+				pos = pos, 
+				gain = 1,
+				max_hear_distance = 10})
+		end
+	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_tube(pos, oldnode, oldmetadata)
 	end,
 	
-	on_rightclick = on_rightclick,
-	
 	paramtype2 = "facedir", -- important!
 	drawtype = "nodebox",
 	node_box = {
@@ -146,17 +83,19 @@ minetest.register_node("techage:ta3_valve_closed", {
 		"techage_gaspipe_valve_hole.png",
 	},
 	
-	tubelib2_on_update2 = function(pos, outdir, tlib2, node)
+	on_rightclick = function(pos, node, clicker)
-		liquid.update_network(pos, outdir)
+		if liquid.turn_valve_on(pos, Pipe, "techage:ta3_valve_closed", "techage:ta3_valve_open") then
+			minetest.sound_play("techage_valve", {
+				pos = pos, 
+				gain = 1,
+				max_hear_distance = 10})
+		end
 	end,
-	
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Pipe:after_dig_node(pos)
 		techage.remove_node(pos, oldnode, oldmetadata)
 	end,
 	
-	on_rightclick = on_rightclick,
-	
 	paramtype2 = "facedir", -- important!
 	drawtype = "nodebox",
 	node_box = {
@@ -180,10 +119,10 @@ techage.register_node({"techage:ta3_valve_closed", "techage:ta3_valve_open"}, {
 	on_recv_message = function(pos, src, topic, payload)
 		local node = techage.get_node_lvm(pos)
 		if topic == "on" and node.name == "techage:ta3_valve_closed" then
-			switch_node(pos, node)
+			liquid.turn_valve_on(pos, Pipe, "techage:ta3_valve_closed", "techage:ta3_valve_open")
 			return true
 		elseif topic == "off" and node.name == "techage:ta3_valve_open" then
-			switch_node(pos, node)
+			liquid.turn_valve_off(pos, Pipe, "techage:ta3_valve_closed", "techage:ta3_valve_open")
 			return true
 		elseif topic == "state" then
 			if node.name == "techage:ta3_valve_open" then
@@ -196,6 +135,8 @@ techage.register_node({"techage:ta3_valve_closed", "techage:ta3_valve_open"}, {
 	end,
 })	
 
+liquid.register_nodes({"techage:ta3_valve_closed"}, Pipe, "special", {}, {}) 
+
 minetest.register_craft({
 	output = "techage:ta3_valve_open",
 	recipe = {

liquids/waterpump.lua

@@ -87,7 +87,7 @@ local function pumping(pos, nvm)
 		power.consumer_alive(pos, Cable, CYCLE_TIME)
 	end
 	if nvm.running then
-		local leftover = liquid.put(pos, 6, "techage:water", 1)
+		local leftover = liquid.put(pos, Pipe, 6, "techage:water", 1)
 		if leftover and leftover > 0 then
 			State:blocked(pos, nvm)
 			return
@@ -126,7 +126,6 @@ end
 local function after_dig_node(pos, oldnode, oldmetadata, digger)
 	Pipe:after_dig_node(pos)
 	Cable:after_dig_node(pos)
-	liquid.after_dig_pump(pos)
 	techage.del_mem(pos)
 end
 

oil/distiller.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -17,8 +17,7 @@ local P2S = minetest.pos_to_string
 local M = minetest.get_meta
 local S = techage.S
 local Pipe = techage.LiquidPipe
-local networks = techage.networks
+local liquid = networks.liquid
-local liquid = techage.liquid
 
 
 local function orientation(pos, names)
@@ -40,10 +39,6 @@ local function after_place_node(pos, placer)
 	Pipe:after_place_node(pos)
 end
 
-local function tubelib2_on_update2(pos, dir, tlib2, node)
-	liquid.update_network(pos, dir, tlib2)
-end
-
 local function after_dig_node(pos, oldnode, oldmetadata, digger)
 	Pipe:after_dig_node(pos)
 end
@@ -73,9 +68,7 @@ minetest.register_node("techage:ta3_distiller_base", {
 		type = "fixed",
 		fixed = {-1/2, -1/2, -1/2, 1/2, 1/2, 1/2},
 	},
-	
 	after_place_node = after_place_node,
-	tubelib2_on_update2 = tubelib2_on_update2,
 	after_dig_node = after_dig_node,
 	
 	paramtype2 = "facedir",
@@ -83,15 +76,10 @@ minetest.register_node("techage:ta3_distiller_base", {
 	groups = {cracky=2},
 	is_ground_content = false,
 	sounds = default.node_sound_stone_defaults(),
-
-	networks = {
-		pipe2 = {
-			sides = {B=1}, -- Pipe connection sides
-			ntype = "pump",
-		},
-	},
 })
 
+liquid.register_nodes({"techage:ta3_distiller_base"}, Pipe, "pump", {"B"}, {})
+
 minetest.register_node("techage:ta3_distiller1", {
 	description = S("TA3 Distillation Tower 1"),
 	tiles = {"techage_distiller1.png"},
@@ -112,8 +100,6 @@ minetest.register_node("techage:ta3_distiller1", {
 		after_place_node(pos, placer)
 		return res
 	end,
-	
-	tubelib2_on_update2 = tubelib2_on_update2,
 	after_dig_node = after_dig_node,
 
 	paramtype = "light",
@@ -122,15 +108,10 @@ minetest.register_node("techage:ta3_distiller1", {
 	groups = {cracky=2},
 	is_ground_content = false,
 	sounds = default.node_sound_metal_defaults(),
-
-	networks = {
-		pipe2 = {
-			sides = {F=1}, -- Pipe connection sides
-			ntype = "tank",
-		},
-	},
 })
 
+liquid.register_nodes({"techage:ta3_distiller1"}, Pipe, "pump", {"F"}, {})
+
 minetest.register_node("techage:ta3_distiller2", {
 	description = S("TA3 Distillation Tower 2"),
 	tiles = {"techage_distiller2.png"},
@@ -175,8 +156,6 @@ minetest.register_node("techage:ta3_distiller3", {
 		local res = orientation(pos, {"techage:ta3_distiller2"})
 		return res
 	end,
-	
-	tubelib2_on_update2 = tubelib2_on_update2,
 	after_dig_node = after_dig_node,
 	
 	paramtype = "light",
@@ -185,15 +164,10 @@ minetest.register_node("techage:ta3_distiller3", {
 	groups = {cracky=2},
 	is_ground_content = false,
 	sounds = default.node_sound_metal_defaults(),
-
-	networks = {
-		pipe2 = {
-			sides = {B=1}, -- Pipe connection sides
-			ntype = "pump",
-		},
-	},
 })
 
+liquid.register_nodes({"techage:ta3_distiller3"}, Pipe, "pump", {"B"}, {})
+
 minetest.register_node("techage:ta3_distiller4", {
 	description = S("TA3 Distillation Tower 4"),
 	tiles = {"techage_distiller4.png"},
@@ -213,8 +187,6 @@ minetest.register_node("techage:ta3_distiller4", {
 		after_place_node(pos, placer)
 		return res
 	end,
-	
-	tubelib2_on_update2 = tubelib2_on_update2,
 	after_dig_node = after_dig_node,
 	
 	paramtype = "light",
@@ -223,40 +195,28 @@ minetest.register_node("techage:ta3_distiller4", {
 	groups = {cracky=2},
 	is_ground_content = false,
 	sounds = default.node_sound_metal_defaults(),
-
-	networks = {
-		pipe2 = {
-			sides = {U=1}, -- Pipe connection sides
-			ntype = "pump",
-		},
-	},
 })
 
+liquid.register_nodes({"techage:ta3_distiller4"}, Pipe, "pump", {"U"}, {})
 
-Pipe:add_secondary_node_names({
+local Liquids = {"techage:bitumen", "techage:fueloil", "techage:naphtha", "techage:gasoline", "techage:gas"}
-		"techage:ta3_distiller_base", "techage:ta3_distiller1",
+local YPos = {-1, 2, 4, 6, 7}
-		"techage:ta3_distiller3", "techage:ta3_distiller4",
-})
-
-local Liquids = {
-	[-1] = "techage:bitumen",
-	[2] = "techage:fueloil",
-	[4] = "techage:naphtha",
-	[6] = "techage:gasoline",
-	[7] = "techage:gas",
-}
 
 techage.register_node({"techage:ta3_distiller1"}, {
 	on_transfer = function(pos, in_dir, topic, payload)
 		if topic == "put" then
-			local leftover = 0
+			local nvm = techage.get_nvm(pos)
-			local outdir = M(pos):get_int("outdir")
+			nvm.idx = nvm.idx or 1
-			for _,y in ipairs({-1, 2, 4, 6, 7}) do
+			local outdir
-				local pos2 = {x = pos.x, y = pos.y + y, z = pos.z}
+			if nvm.idx == 5 then 
-				if y == 7 then
+				outdir = 6 -- up
-					outdir = 6
+			else
-				end
+				outdir = M(pos):get_int("outdir")
-				leftover = leftover + liquid.put(pos2, outdir, Liquids[y], 1)
+			end
+			local pos2 = {x = pos.x, y = pos.y + YPos[nvm.idx], z = pos.z}
+			local leftover = liquid.put(pos2, Pipe, outdir, Liquids[nvm.idx], 1)
+			if leftover == 0 then
+				nvm.idx = (nvm.idx % 5) + 1
 			end
 			return leftover
 		end

oil/drillbox.lua

@@ -238,7 +238,7 @@ local tubing = {
 		local nvm = techage.get_nvm(pos)
 		if not nvm.assemble_locked then
 			local meta = minetest.get_meta(pos)
-			if meta:get_int("push_dir") == in_dir  or in_dir == 5 then
+			if meta:get_int("push_dir") == in_dir then
 				local inv = M(pos):get_inventory()
 				CRD(pos).State:start_if_standby(pos)
 				return techage.put_items(inv, "src", stack)
@@ -299,6 +299,7 @@ local _, node_name_ta3, _ =
 		sounds = default.node_sound_wood_defaults(),
 		num_items = {0,1,1,1},
 		power_consumption = {0,10,16,24},
+		tube_sides = {L=1, R=1},
 	},
 	{false, false, true, false})  -- TA3 only
 

oil/explore.lua

@@ -23,7 +23,7 @@ local OIL_MAX = 20000
 local DEPTH_MIN = 16
 local DEPTH_MAX = 25*16
 local DEPTH_STEP = 16
-local YPOS_MAX = -6*16  -- oil can found below this level
+local YPOS_MAX = -6*16  -- oil can't found below this level
 local OIL_BUBBLE_SIZE = 4096
 
 local seed = tonumber(minetest.settings:get("techage_oil_exploration_seed")) or 1234  -- confidental!

oil/pumpjack.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -18,7 +18,7 @@ local M = minetest.get_meta
 local P = minetest.string_to_pos
 local S = techage.S
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local liquid = networks.liquid
 
 -- Consumer Related Data
 local CRD = function(pos) return (minetest.registered_nodes[techage.get_node_lvm(pos).name] or {}).consumer end
@@ -103,7 +103,7 @@ end
 
 local function pumping(pos, crd, meta, nvm)
 	if has_oil(pos, meta) then
-		local leftover = liquid.put(pos, 6, "techage:oil_source", 1)
+		local leftover = liquid.put(pos, Pipe, 6, "techage:oil_source", 1)
 		if leftover and leftover > 0 then
 			crd.State:blocked(pos, nvm)
 			stop_sound(pos)
@@ -211,12 +211,6 @@ local _, node_name_ta3, _ =
 			end
 			Pipe:after_place_node(pos)
 		end,
-		networks = {
-			pipe2 = {
-				sides = {U = 1}, -- Pipe connection side
-				ntype = "pump",
-			},
-		},
 		power_sides = {F=1, B=1, L=1, R=1, D=1},
 		on_rightclick = on_rightclick,
 		on_receive_fields = on_receive_fields,
@@ -244,5 +238,5 @@ minetest.register_craft({
 	},
 })
 
-Pipe:add_secondary_node_names({"techage:ta3_pumpjack_pas", "techage:ta3_pumpjack_act"})
+liquid.register_nodes({"techage:ta3_pumpjack_pas", "techage:ta3_pumpjack_act"}, Pipe, "pump", {"U"}, {})
 

oil/reboiler.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -16,15 +16,14 @@ local S2P = minetest.string_to_pos
 local P2S = minetest.pos_to_string
 local M = minetest.get_meta
 local S = techage.S
+local Flip = networks.Flip
 local Pipe = techage.LiquidPipe
-local networks = techage.networks
-local liquid = techage.liquid
-local Flip = techage.networks.Flip
 local Cable = techage.ElectricCable
-local power = techage.power
+local liquid = networks.liquid
+local power = networks.power
 
-local CYCLE_TIME = 16
+local CYCLE_TIME = 2
-local CAPA = 12
+local WAITING_CYCLES = 5  -- in case BLOCKED
 local PWR_NEEDED = 14
 
 local function play_sound(pos)
@@ -51,90 +50,98 @@ end
 
 local function swap_node(pos, on)
 	local nvm = techage.get_nvm(pos)
-	if on then
+	local node = techage.get_node_lvm(pos)
-		local node = techage.get_node_lvm(pos)
+	if on and node.name == "techage:ta3_reboiler" then
 		node.name = "techage:ta3_reboiler_on"
 		minetest.swap_node(pos, node)
-		minetest.get_node_timer(pos):start(CYCLE_TIME)
 		play_sound(pos)
-	elseif not on and nvm.running then
+	elseif not on and node.name == "techage:ta3_reboiler_on" then
-		local node = techage.get_node_lvm(pos)
 		node.name = "techage:ta3_reboiler"
 		minetest.swap_node(pos, node)
-		minetest.get_node_timer(pos):stop()
-		nvm.running = false
-		power.consumer_stop(pos, Cable)
 		stop_sound(pos)
 	end
 end
 
-local function on_power(pos)
+local function pump_cmnd(pos)
-	swap_node(pos, true)
+	local leftover = techage.transfer(
-end
-
-local function on_nopower(pos)
-	swap_node(pos, false)
-end
-
-local function is_running(pos, nvm) 
-	return nvm.running 
-end
-
-local function pump_cmnd(pos, cmnd, payload)
-	return techage.transfer(
 		pos, 
 		"R",  -- outdir
-		cmnd,  -- topic
+		"put",  -- topic
-		payload,  -- payload
+		nil,  -- payload
 		Pipe,  -- Pipe
 		{"techage:ta3_distiller1"})
+	
+	-- number of processed oil items
+	return  1 - (tonumber(leftover) or 1)
 end
 
-local function node_timer(pos, elapsed)
+local function new_state(pos, nvm, state)
-	local nvm = techage.get_nvm(pos)
+	if nvm.state ~= state then
-	nvm.liquid = nvm.liquid or {}
+		nvm.state = state
-	nvm.liquid.amount = nvm.liquid.amount or 0
+		M(pos):set_string("infotext", S("TA3 Oil Reboiler") .. ": " .. techage.StateStrings[state])
-	
+		swap_node(pos, state == techage.RUNNING)
-	if not nvm.error or nvm.error == 0 then
-		power.consumer_alive(pos, Cable, CYCLE_TIME)
 	end
+end
 
-	if nvm.liquid.amount >= 5 and nvm.liquid.name == "techage:oil_source" then
+local function on_timer(pos)
-		nvm.liquid.amount = nvm.liquid.amount - 5
+	local nvm = techage.get_nvm(pos)
-		local leftover = pump_cmnd(pos, "put")
+	nvm.oil_amount = nvm.oil_amount or 0
-		if (tonumber(leftover) or 1) > 0 then
+	
-			nvm.liquid.amount = nvm.liquid.amount + 5
+	-- Power handling
-			nvm.error = 2 -- = 2 pump cycles
+	if nvm.state == techage.STOPPED then
-			M(pos):set_string("infotext", S("TA3 Oil Reboiler: blocked"))
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
-			swap_node(pos, false)
+		if consumed == PWR_NEEDED then
-			return false
+			new_state(pos, nvm, techage.RUNNING)
+			return true
+		end
+	elseif nvm.state == techage.RUNNING then
+		local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
+		if consumed < PWR_NEEDED then
+			local nvm = techage.get_nvm(pos)
+			new_state(pos, nvm, techage.STOPPED)
+			return true
+		end
+	elseif nvm.state == techage.BLOCKED or nvm.state == techage.STANDBY then
+		if not power.power_available(pos, Cable) then
+			local nvm = techage.get_nvm(pos)
+			new_state(pos, nvm, techage.STOPPED)
+			return true
 		end
-		return true
 	end
-	swap_node(pos, false)
-	return false
-end	
 	
-local function start_node(pos)
+	-- Oil handling
-	local nvm = techage.get_nvm(pos)
+	if nvm.state == techage.RUNNING then
-	if nvm.running then return end
+		if nvm.oil_amount >= 1 then
-	
+			local processed = pump_cmnd(pos)
-	nvm.liquid = nvm.liquid or {}
+			nvm.oil_amount = nvm.oil_amount - processed
-	nvm.liquid.amount = nvm.liquid.amount or 0
+			nvm.waiting_cycles = WAITING_CYCLES
-	if nvm.liquid.amount >= 5 and nvm.liquid.name == "techage:oil_source" then
+			if processed == 0 then
-		if power.power_available(pos, Cable) then
+				new_state(pos, nvm, techage.BLOCKED)
-			if node_timer(pos, CYCLE_TIME) then
+			else
-				nvm.running = true
+				new_state(pos, nvm, techage.RUNNING)
-				power.consumer_start(pos, Cable, CYCLE_TIME)
+			end
-				minetest.get_node_timer(pos):start(CYCLE_TIME)
+		else
+			nvm.waiting_cycles = nvm.waiting_cycles - 1
+			if nvm.waiting_cycles <= 0 then
+				new_state(pos, nvm, techage.STANDBY)
 			end
 		end
+	elseif nvm.state == techage.BLOCKED then
+		nvm.waiting_cycles = nvm.waiting_cycles - 1
+		if nvm.waiting_cycles <= 0 then
+			new_state(pos, nvm, techage.RUNNING)
+		end
+	else
+		-- STANDBY: 'put' will trigger the state change
 	end
+	return true
 end
 	
 local function after_place_node(pos)
+	local nvm = techage.get_nvm(pos)
+	new_state(pos, nvm, techage.STOPPED)
 	Pipe:after_place_node(pos)
-	Cable:after_place_node(pos)
+	Cable.after_place_node(pos)
 end
 
 local function after_dig_node(pos, oldnode)
@@ -143,51 +150,13 @@ local function after_dig_node(pos, oldnode)
 	techage.del_mem(pos)
 end
 
-local function tubelib2_on_update2(pos, outdir, tlib2, node) 
+local function on_rightclick(pos, node, clicker)
-	if tlib2.tube_type == "pipe2" then
+	local nvm = techage.get_nvm(pos)
-		liquid.update_network(pos, outdir, tlib2)
+	nvm.oil_amount = 0
-	else
+	new_state(pos, nvm, techage.STOPPED)
-		power.update_network(pos, outdir, tlib2)
+	minetest.get_node_timer(pos):start(CYCLE_TIME)
-	end
 end
 
-local liquid_def = {
-	capa = CAPA,
-	peek = liquid.srv_peek,
-	put = function(pos, indir, name, amount)
-		local nvm = techage.get_nvm(pos)
-		if nvm.error and nvm.error > 0 then
-			nvm.error = nvm.error - 1
-			if nvm.error <= 0 then
-				M(pos):set_string("infotext", S("TA3 Oil Reboiler"))
-				start_node(pos)
-				return liquid.srv_put(pos, indir, name, amount)
-			else
-				return amount
-			end
-		else
-			start_node(pos)
-			return liquid.srv_put(pos, indir, name, amount)
-		end
-	end,
-	take = liquid.srv_take,
-}
-
-local net_def = {
-	pipe2 = {
-		sides = {L = true, R = true}, -- Pipe connection sides
-		ntype = "tank",
-	},
-	ele1 = {
-		sides = techage.networks.AllSides, -- Cable connection sides
-		ntype = "con1",
-		on_power = on_power,
-		on_nopower = on_nopower,
-		nominal = PWR_NEEDED,
-		is_running = is_running,
-	},
-}
-
 minetest.register_node("techage:ta3_reboiler", {
 	description = S("TA3 Oil Reboiler"),
 	tiles = {
@@ -200,26 +169,10 @@ minetest.register_node("techage:ta3_reboiler", {
 		"techage_filling_ta3.png^techage_appl_reboiler.png^techage_frame_ta3.png",
 	},
 
-	after_place_node = function(pos, placer)
+	on_timer = on_timer,
-		local nvm = techage.get_nvm(pos)
-		nvm.liquid = {}
-		local meta = M(pos)
-		meta:set_string("infotext", S("TA3 Oil Reboiler"))
-		meta:set_int("outdir", networks.side_to_outdir(pos, "R"))
-		local number = techage.add_node(pos, "techage:ta3_reboiler")
-		meta:set_string("node_number", number)
-		meta:set_string("owner", placer:get_player_name())
-		Pipe:after_place_node(pos)
-		power.after_place_node(pos)
-	end,
-	
-	tubelib2_on_update2 = tubelib2_on_update2,
-	on_timer = node_timer,
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
-	after_dig_node = after_dig_node,
+	on_rightclick = on_rightclick,
-	liquid = liquid_def,
-	networks = net_def,
 	
 	paramtype2 = "facedir",
 	on_rotate = screwdriver.disallow,
@@ -258,10 +211,8 @@ minetest.register_node("techage:ta3_reboiler_on", {
 		},
 	},
 
-	tubelib2_on_update2 = tubelib2_on_update2,
+	on_timer = on_timer,
-	on_timer = node_timer,
+	on_rightclick = on_rightclick,
-	liquid = liquid_def,
-	networks = net_def,
 	
 	paramtype2 = "facedir",
 	on_rotate = screwdriver.disallow,
@@ -271,25 +222,43 @@ minetest.register_node("techage:ta3_reboiler_on", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
-Pipe:add_secondary_node_names({"techage:ta3_reboiler", "techage:ta3_reboiler_on"})
+local liquid_def = {
-Cable:add_secondary_node_names({"techage:ta3_reboiler", "techage:ta3_reboiler_on"})
+	peek = function(pos)
+		local nvm = techage.get_nvm(pos)
+		return liquid.srv_peek(nvm)
+	end,
+	put = function(pos, indir, name, amount)
+		local nvm = techage.get_nvm(pos)
+		nvm.oil_amount = nvm.oil_amount or 0
+	
+		if nvm.state == techage.STANDBY or nvm.state == techage.RUNNING then
+			if name == "techage:oil_source" and amount > 0 then
+				if nvm.state == techage.STANDBY then
+					new_state(pos, nvm, techage.RUNNING)
+				end
+				-- Take one oil item every 2 cycles
+				-- Hint: We have to take two items, because the pump will pause for 4 cycles,
+				-- if nothing is taken.
+				nvm.take = nvm.take ~= true
+				if nvm.take and nvm.oil_amount < 5 then
+					nvm.oil_amount = nvm.oil_amount + 2
+					return amount - 2
+				end
+			end
+		end
+		return amount
+	end
+}
+
+liquid.register_nodes({"techage:ta3_reboiler", "techage:ta3_reboiler_on"}, Pipe, "tank", {"L", "R"}, liquid_def)
+power.register_nodes({"techage:ta3_reboiler", "techage:ta3_reboiler_on"}, Cable, "con")
 
 techage.register_node({"techage:ta3_reboiler", "techage:ta3_reboiler_on"}, {
 	on_recv_message = function(pos, src, topic, payload)
 		local nvm = techage.get_nvm(pos)
-		if topic == "on" then
+		if topic == "state" then
-			start_node(pos)
+			nvm.state = nvm.state or techage.STOPPED
-			return true
+			return techage.StateStrings[nvm.state]
-		elseif topic == "off" then
-			swap_node(pos, false)
-			return true
-		elseif topic == "state" then
-			if nvm.error and nvm.error > 0 then
-				return "blocked"
-			elseif nvm.running then
-				return "running"
-			end
-			return "stopped"
 		else
 			return "unsupported"
 		end

power/electric_cable.lua

@@ -37,6 +37,8 @@ local Cable = tubelib2.Tube:new({
 			minetest.swap_node(pos, {name = name, param2 = param2 % 32})
 		elseif name == "techage:power_line" or name == "techage:power_lineS" or name == "techage:power_lineA" then
 			minetest.swap_node(pos, {name = "techage:power_line"..tube_type, param2 = param2 % 32})
+		elseif name == "techage:power_pole2" then
+			-- nothing
 		elseif not networks.hidden_name(pos) then
 			minetest.swap_node(pos, {name = "techage:electric_cable"..tube_type, param2 = param2 % 32})
 		end
@@ -47,7 +49,7 @@ local Cable = tubelib2.Tube:new({
 
 -- Enable hidden cables
 networks.use_metadata(Cable)
-networks.register_hidden_message("Use the tool to remove the node.")
+networks.register_hidden_message("Use the trowel tool to remove the node.")
 networks.register_filling_items(techage.FILLING_ITEMS)
 
 -- Use global callback instead of node related functions

power/formspecs.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -24,10 +24,6 @@ local in_range = techage.in_range
 local power = networks.power
 techage.power = {}
 
--- Charge termination areas
-local Cp2Idx = {["40% - 60%"] = 1, ["60% - 80%"] = 2, ["80% - 100%"] = 3}
-
-
 -------------------------------------------------------------------------------
 -- Helper function
 -------------------------------------------------------------------------------
@@ -131,8 +127,8 @@ function techage.formspec_charging_bar(pos, x, y, label, data)
 	
 	if data then
 		charging = data.provided - data.consumed
-		consumed = data.consumed
+		consumed = round(data.consumed)
-		available = data.available
+		available = round(data.available)
 		if charging > 0 then
 			percent = 50 + (charging / data.available * 50)
 		elseif charging < 0 then
@@ -159,26 +155,6 @@ function techage.formspec_storage_bar(pos, x, y, label, curr_load, max_load)
 		"container_end[]"
 end
 
-function techage.formspec_charge_termination(pos, x, y, label, value, running)
-	local idx = Cp2Idx[value] or 2
-	value = value or 0
-	
-	if running then
-		return "container[" .. x .. "," .. y .. "]" ..
-			"box[0,0;3.2,1.5;#395c74]" ..
-			"label[0.2,0;" .. label .. "]" ..
-			"box[0.2,0.6;2.7,0.7;#000000]" ..
-			"label[0.3,0.75;" .. value .. "]" ..
-			"container_end[]"
-	else
-		return "container[" .. x .. "," .. y .. "]" ..
-			"box[0,0;3.2,1.5;#395c74]" ..
-			"label[0.2,0;" .. label .. "]" ..
-			"dropdown[0.2,0.6;3.0;termpoint;40% - 60%,60% - 80%,80% - 100%;" .. idx .. "]" ..
-			"container_end[]"
-	end
-end
-
 -------------------------------------------------------------------------------
 -- API formspec functions
 -------------------------------------------------------------------------------
@@ -195,33 +171,83 @@ function techage.storage_formspec(self, pos, nvm, label, netw_data, curr_load, m
 		"tooltip[2.7,2;1,1;" .. self:get_state_tooltip(nvm) .. "]"
 end
 
-function techage.generator_formspec(self, pos, nvm, label, provided, max_available, running)
+function techage.generator_formspec(self, pos, nvm, label, provided, max_available)
-	return "size[6,4]" ..
+	return "size[5,4]" ..
 		default.gui_bg ..
 		default.gui_bg_img ..
 		default.gui_slots ..
-		"box[0,-0.1;5.8,0.5;#c6e8ff]" ..
+		"box[0,-0.1;4.8,0.5;#c6e8ff]" ..
 		"label[0.2,-0.1;" .. minetest.colorize( "#000000", label) .. "]" ..
 		techage.formspec_power_bar(pos, 0, 0.8, S("power"), provided, max_available) ..
-		"image_button[3.8,2.9;1,1;" .. self:get_state_button_image(nvm) .. ";state_button;]" ..
+		"image_button[3.2,2.0;1,1;" .. self:get_state_button_image(nvm) .. ";state_button;]" ..
-		"tooltip[3.8,2.9;1,1;" .. self:get_state_tooltip(nvm) .. "]" ..
+		"tooltip[3.2,2.0;1,1;" .. self:get_state_tooltip(nvm) .. "]"
-		techage.formspec_charge_termination(pos, 2.6, 0.8, S("Charge termination"), nvm.termpoint, running)
 end
 
-function techage.evaluate_charge_termination(nvm, fields)
+function techage.generator_settings(tier, available)
-	if fields.termpoint and not nvm.running then 
+	if tier == "ta3" then
-		nvm.termpoint = fields.termpoint
+		return {
-		if fields.termpoint == "40% - 60%" then 
+			{
-			nvm.termpoint1 = 0.4
+				type = "const",
-			nvm.termpoint2 = 0.6
+				name = "available",
-		elseif fields.termpoint == "60% - 80%" then 
+				label = S("Maximum output [ku]"),      
-			nvm.termpoint1 = 0.6
+				tooltip = S("The maximum power the generator can provide"),
-			nvm.termpoint2 = 0.8
+				value = available,
-		elseif fields.termpoint == "80% - 100%" then 
+			},
-			nvm.termpoint1 = 0.8
+			{
-			nvm.termpoint2 = 1.0
+				type = "output",
-		end
+				name = "provided",
-		return true
+				label = S("Current output [ku]"),      
+				tooltip = S("The current power the generator provides"),
+			},
+			{
+				type = "dropdown",
+				choices = "40% - 60%,60% - 80%,80% - 100%",
+				name = "termpoint",
+				label = S("Charge termination"),      
+				tooltip = S("Range in which the generator reduces its power"),
+			},
+		}
+	else
+		return {
+			{
+				type = "const",
+				name = "available",
+				label = S("Maximum output [ku]"),      
+				tooltip = S("The maximum power the generator can provide"),
+				value = available,
+			},
+			{
+				type = "output",
+				name = "provided",
+				label = S("Current output [ku]"),      
+				tooltip = S("The current power the generator provides"),
+			},
+			{
+				type = "dropdown",
+				choices = "40% - 60%,60% - 80%,80% - 100%",
+				name = "termpoint",
+				label = S("Charge termination"),      
+				tooltip = S("Range in which the generator reduces its power"),
+			},
+		}
+	end
+end
+
+function techage.evaluate_charge_termination(nvm, meta)
+	local termpoint = meta:get_string("termpoint")
+	if termpoint == "40% - 60%" then 
+		meta:set_string("termpoint1", 0.4)
+		meta:set_string("termpoint2", 0.6)
+	elseif termpoint == "60% - 80%" then 
+		meta:set_string("termpoint1", 0.6)
+		meta:set_string("termpoint2", 0.8)
+	elseif termpoint == "80% - 100%" then 
+		meta:set_string("termpoint1", 0.8)
+		meta:set_string("termpoint2", 1.0)
+	else
+		meta:set_string("termpoint", "80% - 100%")
+		meta:set_string("termpoint1", 0.8)
+		meta:set_string("termpoint2", 1.0)
 	end
 end
 

power/gearbox.lua

@@ -130,6 +130,12 @@ minetest.register_node("techage:gearbox_on", {
 
 power.register_nodes({"techage:gearbox", "techage:gearbox_on"}, Axle, "junc")
 	
+techage.register_node({"techage:gearbox", "techage:gearbox_on"}, {
+	on_node_load = function(pos, node)
+		minetest.get_node_timer(pos):start(CYCLE_TIME)
+	end,
+})
+
 minetest.register_craft({
 	output = "techage:gearbox 2",
 	recipe = {

power/laser.lua

@@ -19,8 +19,7 @@ local M = minetest.get_meta
 local S = techage.S
 
 local Cable = techage.ElectricCable
-local power = techage.power
+local power = networks.power
-local networks = techage.networks
 
 minetest.register_node("techage:ta4_laser_emitter", {
 	description = S("TA4 Laser Beam Emitter"),
@@ -122,9 +121,7 @@ minetest.register_node("techage:ta4_laser_receiver", {
 	sounds = default.node_sound_wood_defaults(),
 })
 
-Cable:add_secondary_node_names({"techage:ta4_laser_emitter", "techage:ta4_laser_receiver"})
+power.register_nodes({"techage:ta4_laser_emitter", "techage:ta4_laser_receiver"}, Cable, "special", {"F"})
-Cable:set_valid_sides("techage:ta4_laser_emitter", {"F"})
-Cable:set_valid_sides("techage:ta4_laser_receiver", {"F"})
 
 minetest.register_craft({
 	output = "techage:ta4_laser_emitter",

power/power_line.lua

@@ -43,10 +43,7 @@ minetest.register_node("techage:power_line", {
 	end,
 	
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		if oldmetadata and oldmetadata.fields and oldmetadata.fields.tl2_param2 then
+		Cable:after_dig_tube(pos, oldnode)
-			oldnode.param2 = oldmetadata.fields.tl2_param2
-			Cable:after_dig_tube(pos, oldnode)
-		end
 	end,
 	
 	paramtype2 = "facedir", -- important!
@@ -85,10 +82,7 @@ minetest.register_node("techage:power_lineS", {
 	end,
 	
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		if oldmetadata and oldmetadata.fields and oldmetadata.fields.tl2_param2 then
+		Cable:after_dig_tube(pos, oldnode)
-			oldnode.param2 = oldmetadata.fields.tl2_param2
-			Cable:after_dig_tube(pos, oldnode)
-		end
 	end,
 	
 	paramtype2 = "facedir", -- important!
@@ -133,10 +127,7 @@ minetest.register_node("techage:power_lineA", {
 	end,
 	
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		if oldmetadata and oldmetadata.fields and oldmetadata.fields.tl2_param2 then
+		Cable:after_dig_tube(pos, oldnode)
-			oldnode.param2 = oldmetadata.fields.tl2_param2
-			Cable:after_dig_tube(pos, oldnode)
-		end
 	end,
 	
 	paramtype2 = "facedir", -- important!
@@ -213,13 +204,7 @@ minetest.register_node("techage:power_pole2", {
 	end,
 	can_dig = can_dig,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		if oldmetadata and oldmetadata.fields and oldmetadata.fields.tl2_param2 then
+		Cable:after_dig_tube(pos, oldnode)
-			oldnode.param2 = oldmetadata.fields.tl2_param2
-			Cable:after_dig_tube(pos, oldnode)
-		end
-	end,
-	tubelib2_on_update2 = function(pos, dir1, tlib2, node)
-		power.update_network(pos, nil, tlib2)
 	end,
 	
 	on_rotate = screwdriver.disallow, -- important!
@@ -303,20 +288,10 @@ minetest.register_node("techage:power_pole_conn", {
 	},
 	connects_to = {"techage:power_line", "techage:power_lineS", "techage:power_lineA"},
 
-	-- after_place_node -- see techage:power_pole
+	can_dig = can_dig,
-	tubelib2_on_update2 = function(pos, dir1, tlib2, node)
-		power.update_network(pos, nil, tlib2)
-	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Cable:after_dig_node(pos)
 	end,
-	can_dig = can_dig,
-	networks = {
-		ele1 = {
-			sides = networks.AllSides, -- connection sides for cables
-			ntype = "junc",
-		},
-	},
 	
 	drop = "techage:power_pole",
 	on_rotate = screwdriver.disallow, -- important!
@@ -328,8 +303,7 @@ minetest.register_node("techage:power_pole_conn", {
 	sounds = default.node_sound_defaults(),
 })
 
-Cable:add_secondary_node_names({"techage:power_pole_conn"})
+power.register_nodes({"techage:power_pole_conn"}, Cable, "junc")
-
 
 minetest.register_node("techage:power_pole3", {
 	description = S("TA Power Pole"),

power/ta4_cable.lua

@@ -18,7 +18,7 @@ local P2S = minetest.pos_to_string
 local M = minetest.get_meta
 local S = techage.S
 
-local power = techage.power
+local power = networks.power
 
 local ELE2_MAX_CABLE_LENGHT = 200
 
@@ -40,13 +40,10 @@ local Cable = tubelib2.Tube:new({
 	end,
 })
 
---Cable:register_on_tube_update(function(node, pos, out_dir, peer_pos, peer_in_dir)
+-- Use global callback instead of node related functions
---	local ndef = minetest.registered_nodes[node.name]
+Cable:register_on_tube_update2(function(pos, outdir, tlib2, node)
---	if ndef and ndef.after_tube_update then
+	power.update_network(pos, outdir, tlib2, node)
---		minetest.registered_nodes[node.name].after_tube_update(node, pos, out_dir, peer_pos, peer_in_dir)
+end)
---	end
---end)
-
 
 minetest.register_node("techage:ta4_power_cableS", {
 	description = S("TA4 Low Power Cable"),
@@ -155,17 +152,11 @@ minetest.register_node("techage:ta4_power_box", {
 		Cable:after_place_node(pos)
 	end,
 	tubelib2_on_update2 = function(pos, dir1, tlib2, node)
-		power.update_network(pos, nil, tlib2)
+		power.update_network(pos, 0, tlib2, node)
 	end,
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		Cable:after_dig_node(pos)
 	end,
-	networks = {
-		ele2 = {
-			sides = {L=1, R=1, F=1, B=1},
-			ntype = "junc",
-		},
-	},
 	
 	on_rotate = screwdriver.disallow, -- important!
 	paramtype = "light",
@@ -176,7 +167,7 @@ minetest.register_node("techage:ta4_power_box", {
 	sounds = default.node_sound_defaults(),
 })
 
-Cable:add_secondary_node_names({"techage:ta4_power_box"})
+power.register_nodes({"techage:ta4_power_box"}, Cable, "junc", {"L", "R", "F", "B"})
 
 minetest.register_craft({
 	output = "techage:ta4_power_cableS 8",

solar/inverter.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -20,8 +20,8 @@ local S2P = minetest.string_to_pos
 
 local Cable = techage.ElectricCable
 local Solar = techage.TA4_Cable
-local power = techage.power
+local power = networks.power
-local networks = techage.networks
+local control = networks.control
 
 local CYCLE_TIME = 2
 local PWR_PERF = 100
@@ -29,13 +29,19 @@ local PWR_PERF = 100
 local function determine_power(pos, nvm)
 	-- determine DC node position
 	local outdir = M(pos):get_int("leftdir")
-	local max_power, num_inverter = power.get_power(pos, outdir, Solar, "techage:ta4_solar_inverter")
+	local netw = networks.get_network_table(pos, Solar, outdir) or {}
-	if num_inverter == 1 then
+	local num_inv = #(netw.con or {})
+	local max_power = 0
+	for _, power in ipairs(control.request(pos, Solar, outdir, "junc", "power")) do
+		max_power = max_power + power
+	end
+	
+	if num_inv == 1 then  -- only one inverter is allowed
 		nvm.max_power = math.min(PWR_PERF, max_power)
 	else
 		nvm.max_power = 0
 	end
-	return max_power, num_inverter
+	return max_power, num_inv
 end
 
 local function determine_power_from_time_to_time(pos, nvm)
@@ -46,7 +52,7 @@ local function determine_power_from_time_to_time(pos, nvm)
 		return
 	end
 	nvm.ticks = nvm.ticks or 0
-	if (nvm.ticks % 10) == 0 then -- calculate max_power not to often
+	if (nvm.ticks % 30) == 0 then -- calculate max_power not to often
 		determine_power(pos, nvm)
 	else
 		nvm.max_power = nvm.max_power or 0
@@ -56,7 +62,7 @@ end
 
 local function formspec(self, pos, nvm)
 	local max_power = nvm.max_power or 0
-	local delivered = nvm.delivered or 0
+	local provided = nvm.provided or 0
 	local arrow = "image[2.5,1.5;1,1;techage_form_arrow_bg.png^[transformR270]"
 	if nvm.running then
 		arrow = "image[2.5,1.5;1,1;techage_form_arrow_fg.png^[transformR270]"
@@ -67,8 +73,8 @@ local function formspec(self, pos, nvm)
 		default.gui_slots..
 		"box[0,-0.1;5.8,0.5;#c6e8ff]"..
 		"label[2.5,-0.1;"..minetest.colorize( "#000000", S("Inverter")).."]"..
-		power.formspec_label_bar(pos, 0,   0.8, S("Power DC"), PWR_PERF, max_power)..
+		techage.formspec_power_bar(pos, 0,   0.8, S("Power DC"), max_power, PWR_PERF)..
-		power.formspec_label_bar(pos, 3.5, 0.8, S("Power AC"), max_power, delivered)..
+		techage.formspec_power_bar(pos, 3.5, 0.8, S("Power AC"), provided, max_power)..
 		arrow..
 		"image_button[2.5,3;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2.5,3;1,1;"..self:get_state_tooltip(nvm).."]"
@@ -82,18 +88,20 @@ local function can_start(pos, nvm, state)
 end
 
 local function start_node(pos, nvm, state)
+	local meta = M(pos)
 	nvm.running = true
-	nvm.delivered = 0
+	nvm.provided = 0
 	nvm.ticks = 0
-	local outdir = M(pos):get_int("outdir")
+	local outdir = meta:get_int("outdir")
-	power.generator_start(pos, Cable, CYCLE_TIME, outdir, nvm.max_power)
+	techage.evaluate_charge_termination(nvm, meta)
+	power.start_storage_calc(pos, Cable, outdir)
 end
 
 local function stop_node(pos, nvm, state)
 	nvm.running = false
-	nvm.delivered = 0
+	nvm.provided = 0
 	local outdir = M(pos):get_int("outdir")
-	power.generator_stop(pos, Cable, outdir)
+	power.start_storage_calc(pos, Cable, outdir)
 end
 
 local State = techage.NodeStates:new({
@@ -108,16 +116,18 @@ local State = techage.NodeStates:new({
 })
 
 local function node_timer(pos, elapsed)
+	local meta = M(pos)
 	local nvm = techage.get_nvm(pos)
 	determine_power_from_time_to_time(pos, nvm)
-	--if nvm.max_power > 0 then
+	local outdir = M(pos):get_int("outdir")
-		local outdir = M(pos):get_int("outdir")
+	local tp1 = tonumber(meta:get_string("termpoint1"))
-		nvm.delivered = power.generator_alive(pos, Cable, CYCLE_TIME, outdir, nvm.max_power)
+	local tp2 = tonumber(meta:get_string("termpoint2"))
-	--else
+	if nvm.max_power and nvm.max_power > 0 then
-		--nvm.delivered = 0
+		nvm.provided = power.provide_power(pos, Cable, outdir, nvm.max_power, tp1, tp2)
-	--end
+		nvm.load = power.get_storage_load(pos, Cable, outdir, nvm.max_power)
+	end
 	if techage.is_activeformspec(pos) then
-		M(pos):set_string("formspec", formspec(State, pos, nvm))
+		meta:set_string("formspec", formspec(State, pos, nvm))
 	end
 	State:trigger_state(pos, nvm)
 	return true
@@ -142,8 +152,11 @@ local function on_rightclick(pos, node, clicker)
 	M(pos):set_string("formspec", formspec(State, pos, nvm))
 end
 
-local function tubelib2_on_update2(pos, outdir, tlib2, node) 
+local function get_generator_data(pos, tlib2)
-	power.update_network(pos, outdir, tlib2)
+	local nvm = techage.get_nvm(pos)
+	if nvm.running then
+		return {level = (nvm.load or 0) / nvm.max_power, perf = nvm.max_power, capa = nvm.max_power * 2}
+	end
 end
 
 minetest.register_node("techage:ta4_solar_inverter", {
@@ -179,38 +192,48 @@ minetest.register_node("techage:ta4_solar_inverter", {
 		techage.del_mem(pos)
 	end,
 
-	tubelib2_on_update2 = tubelib2_on_update2,
 	on_receive_fields = on_receive_fields,
 	on_rightclick = on_rightclick,
 	on_timer = node_timer,
-	networks = {
+	get_generator_data = get_generator_data,
-		ele1 = {
+	ta3_formspec = techage.generator_settings("ta4", PWR_PERF)
-			sides = {R = 1},
-			ntype = "gen1",
-			nominal = PWR_PERF,
-			regenerative = true,
-		},
-		ele2 = {
-			sides = {L = 1},
-			ntype = "con1",
-		},
-	}
 })
 
-Cable:add_secondary_node_names({"techage:ta4_solar_inverter"})
+power.register_nodes({"techage:ta4_solar_inverter"}, Cable, "gen", {"R"})
-Solar:add_secondary_node_names({"techage:ta4_solar_inverter"})
+power.register_nodes({"techage:ta4_solar_inverter"}, Solar, "con", {"L"})
 
 techage.register_node({"techage:ta4_solar_inverter"}, {
 	on_recv_message = function(pos, src, topic, payload)
 		local nvm = techage.get_nvm(pos)
 		if topic == "delivered" then
-			return math.floor((nvm.delivered or 0) + 0.5)
+			return math.floor((nvm.provided or 0) + 0.5)
 		else
 			return State:on_receive_message(pos, topic, payload)
 		end
 	end,
 })	
 
+control.register_nodes({"techage:ta4_solar_inverter"}, {
+		on_receive = function(pos, tlib2, topic, payload)
+		end,
+		on_request = function(pos, tlib2, topic)
+			if topic == "info" then
+				local nvm = techage.get_nvm(pos)
+				local meta = M(pos)
+				return {
+					type = S("TA4 Solar Inverter"),
+					number = meta:get_string("node_number") or "",
+					running = nvm.running or false,
+					available = nvm.max_power or 0,
+					provided = nvm.provided or 0,
+					termpoint = meta:get_string("termpoint"), 
+				}
+			end
+			return false
+		end,
+	}
+)
+
 minetest.register_craft({
 	output = "techage:ta4_solar_inverter",
 	recipe = {

solar/solarcell.lua

@@ -20,7 +20,8 @@ local S = techage.S
 local PWR_PERF = 3
 
 local Cable = techage.TA4_Cable
-local power = techage.power
+local power = networks.power
+local control = networks.control
 
 local function temperature(pos)
 	local data = minetest.get_biome_data(pos)
@@ -32,7 +33,7 @@ end
 
 -- return the required param2 for solar modules
 local function get_param2(pos, side)
-	local dir = techage.networks.side_to_outdir(pos, side)
+	local dir = networks.side_to_outdir(pos, side)
 	return (dir + 1) % 4
 end
 
@@ -89,25 +90,9 @@ local function after_dig_node(pos, oldnode)
 end
 
 local function tubelib2_on_update2(pos, outdir, tlib2, node) 
-	power.update_network(pos, nil, tlib2)
+	power.update_network(pos, 0, tlib2, node)
 end
 
-local net_def1 = {
-	ele2 = {
-		sides = {F=1, B=1},
-		ntype = "junc",
-		on_getpower = on_getpower1,
-	},
-}
-
-local net_def2 = {
-	ele2 = {
-		sides = {F=1, B=1},
-		ntype = "junc",
-		on_getpower = on_getpower2,
-	},
-}
-
 minetest.register_node("techage:ta4_solar_module", {
 	description = S("TA4 Solar Module"),
 	inventory_image = "techage_solar_module_top.png",
@@ -170,7 +155,6 @@ minetest.register_node("techage:ta4_solar_carrier", {
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
 	tubelib2_on_update2 = tubelib2_on_update2,
-	networks = net_def1,
 	
 	paramtype = "light",
 	use_texture_alpha = techage.CLIP,
@@ -210,7 +194,6 @@ minetest.register_node("techage:ta4_solar_carrierB", {
 	after_place_node = after_place_node,
 	after_dig_node = after_dig_node,
 	tubelib2_on_update2 = tubelib2_on_update2,
-	networks = net_def2,
 	
 	paramtype = "light",
 	use_texture_alpha = techage.CLIP,
@@ -249,8 +232,29 @@ minetest.register_node("techage:ta4_solar_carrierT", {
 	sounds = default.node_sound_stone_defaults(),
 })
 
-Cable:add_secondary_node_names({"techage:ta4_solar_carrier", "techage:ta4_solar_carrierB"})
+power.register_nodes({"techage:ta4_solar_carrier", "techage:ta4_solar_carrierB"}, Cable, "junc", {"F", "B"})
 
+control.register_nodes({"techage:ta4_solar_carrier"}, {
+		on_receive = function(pos, tlib2, topic, payload)
+		end,
+		on_request = function(pos, tlib2, topic)
+			if topic == "power" then
+				return on_getpower1(pos)
+			end
+		end,
+	}
+)
+
+control.register_nodes({"techage:ta4_solar_carrierB"}, {
+		on_receive = function(pos, tlib2, topic, payload)
+		end,
+		on_request = function(pos, tlib2, topic)
+			if topic == "power" then
+				return on_getpower2(pos)
+			end
+		end,
+	}
+)
 
 minetest.register_craft({
 	output = "techage:ta4_solar_module",
@@ -288,13 +292,3 @@ minetest.register_craft({
 	},
 })
 
---minetest.register_lbm({
---	label = "Repair Carrier Module",
---	name = "techage:ta4_solar_carrier",
---	nodenames = {"techage:ta4_solar_carrier", "techage:ta4_solar_carrierB"},
---	run_at_every_load = false,
---	action = function(pos, node)
---		local ndef = minetest.registered_nodes[node.name]
---		ndef.after_place_node(pos)
---	end,
---})

steam_engine/flywheel.lua

@@ -31,15 +31,7 @@ local function switch_axles(pos, on)
 end
 
 local function formspec(self, pos, nvm)
-	return "size[4,4]" ..
+	return techage.generator_formspec(self, pos, nvm, S("Flywheel"), nvm.provided, PWR_PERF)
-		"box[0,-0.1;3.8,0.5;#c6e8ff]" ..
-		"label[1,-0.1;" .. minetest.colorize( "#000000", S("Flywheel")) .. "]" ..
-		default.gui_bg ..
-		default.gui_bg_img ..
-		default.gui_slots ..
-		techage.formspec_power_bar(pos, 0, 0.8, S("power"), nvm.provided, PWR_PERF) ..
-		"image_button[2.8,2;1,1;" .. self:get_state_button_image(nvm) .. ";state_button;]" ..
-		"tooltip[2.8,2;1,1; " .. self:get_state_tooltip(nvm) .. "]"
 end
 
 local function transfer_cylinder(pos, topic, payload)
@@ -54,18 +46,18 @@ end
 local function start_node(pos, nvm, state)
 	switch_axles(pos, true)
 	local outdir = M(pos):get_int("outdir")
-	power.start_storage_calc(pos, Axle, outdir)
 	transfer_cylinder(pos, "start")
 	nvm.running = true
+	power.start_storage_calc(pos, Axle, outdir)
 end
 
 local function stop_node(pos, nvm, state)
 	switch_axles(pos, false)
 	local outdir = M(pos):get_int("outdir")
-	power.start_storage_calc(pos, Axle, outdir)
 	nvm.provided = 0
 	transfer_cylinder(pos, "stop")
 	nvm.running = false
+	power.start_storage_calc(pos, Axle, outdir)
 end
 
 local State = techage.NodeStates:new({

ta3_power/axle2power.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -20,8 +20,7 @@ local S2P = minetest.string_to_pos
 
 local Cable = techage.ElectricCable
 local Axle = techage.Axle
-local power = techage.power
+local power = networks.power
-local networks = techage.networks
 
 local CYCLE_TIME = 2
 local PWR_PERF = 24
@@ -35,64 +34,54 @@ local function swap_node(pos, name)
 	minetest.swap_node(pos, node)
 end
 
-local function on_power(pos)
+local function node_timer_on(pos, elapsed)
+	local meta = M(pos)
 	local nvm = techage.get_nvm(pos)
-	nvm.axle = nvm.axle or {}
+	local outdir = meta:get_int("outdir")
-	nvm.consumer_powered = true
+	nvm.buffer = nvm.buffer or 0
-	M(pos):set_string("infotext", S("TA2 Power Generator"))
-	swap_node(pos, "techage:ta2_generator_on")
-	nvm.ticks = 0
-	local outdir = M(pos):get_int("outdir")
-	nvm.axle.curr_power = techage.power.needed_power(pos, Cable, outdir)
-end
 	
-local function on_nopower(pos)
+	local amount = math.min(PWR_PERF * 2 - nvm.buffer, PWR_PERF)
-	local nvm = techage.get_nvm(pos)
+	local taken = power.consume_power(pos, Axle, networks.Flip[outdir], amount)
-	nvm.consumer_powered = false
+	print("node_timer_on", amount, taken, nvm.buffer)
-	if (nvm.ticks or 0) < 4 then
+	nvm.buffer = nvm.buffer + taken - 1  -- some loss
-		M(pos):set_string("infotext", S("TA2 Power Generator: Overload fault?\n(restart with right-click)"))
+	
+	if nvm.buffer >= PWR_PERF then
+		local tp1 = tonumber(meta:get_string("termpoint1"))
+		local tp2 = tonumber(meta:get_string("termpoint2"))
+		nvm.provided = power.provide_power(pos, Cable, outdir, PWR_PERF, tp1, tp2)
+		nvm.load = power.get_storage_load(pos, Cable, outdir, PWR_PERF)
+		nvm.buffer = nvm.buffer - nvm.provided
+		print("provided", nvm.provided, nvm.load, nvm.buffer)
 	end
-	nvm.ticks = 0
+	if amount > 0 and taken == 0 then
-end
+		swap_node(pos, "techage:ta2_generator_off")
-
-local function node_timer(pos, elapsed)
-	local nvm = techage.get_nvm(pos)
-	nvm.axle = nvm.axle or {}
-	
-	-- trigger network on consumer side
-	nvm.ticks = (nvm.ticks or 0) + 1
-	if nvm.ticks % 2 then
-		power.consumer_alive(pos, Axle, CYCLE_TIME)
-	end
-	
-	-- handle generator side delayed
-	if nvm.ticks > 3 then
 		local outdir = M(pos):get_int("outdir")
-		
+		nvm.running = false
-		if nvm.consumer_powered and not nvm.running_as_generator then
+		power.start_storage_calc(pos, Cable, outdir)
-			nvm.running_as_generator = true
-			power.generator_start(pos, Cable, CYCLE_TIME, outdir, nvm.max_power)
-		elseif not nvm.consumer_powered and nvm.running_as_generator then
-			nvm.running_as_generator = false
-			power.generator_stop(pos, Cable, outdir)
-		end
-		
-		if nvm.running_as_generator then
-			nvm.axle.curr_power = power.generator_alive(pos, Cable, CYCLE_TIME, outdir, PWR_PERF) + 1
-		else
-			swap_node(pos, "techage:ta2_generator_off")
-		end
 	end
 	return true
 end
 		
-local function tubelib2_on_update2(pos, outdir, tlib2, node) 
+local function node_timer_off(pos, elapsed)
 	local nvm = techage.get_nvm(pos)
-	nvm.axle = nvm.axle or {}
+	local outdir = M(pos):get_int("outdir")
-	nvm.axle.curr_power = 1
+	
-	power.update_network(pos, outdir, tlib2)
+	if power.power_available(pos, Axle, networks.Flip[outdir]) then
+		swap_node(pos, "techage:ta2_generator_on")
+		nvm.running = true
+		power.start_storage_calc(pos, Cable, outdir)
+	end
+	return true
 end
 
+local function get_generator_data(pos, tlib2)
+	local nvm = techage.get_nvm(pos)
+	if nvm.running then
+		return {level = (nvm.load or 0) / PWR_PERF, perf = PWR_PERF, capa = PWR_PERF * 2}
+	end
+end
+
+
 minetest.register_node("techage:ta2_generator_off", {
 	description = S("TA2 Power Generator"),
 	tiles = {
@@ -110,24 +99,10 @@ minetest.register_node("techage:ta2_generator_off", {
 	is_ground_content = false,
 
 	after_place_node = function(pos)
-		local nvm = techage.get_nvm(pos)
-		nvm.axle = nvm.axle or {}
-		nvm.axle.curr_power = 1
-		nvm.consumer_powered = false
-		nvm.running_as_generator = false
 		M(pos):set_int("outdir", networks.side_to_outdir(pos, "R"))
-		M(pos):set_int("leftdir", networks.side_to_outdir(pos, "L"))
 		Cable:after_place_node(pos)
 		Axle:after_place_node(pos)
 		minetest.get_node_timer(pos):start(CYCLE_TIME)   
-		power.consumer_start(pos, Axle, CYCLE_TIME*2)
-		M(pos):set_string("infotext", S("TA2 Power Generator"))
-	end,
-	
-	on_rightclick = function(pos, node, clicker)
-		local nvm = techage.get_nvm(pos)
-		nvm.axle = nvm.axle or {}
-		nvm.axle.curr_power = 1
 		M(pos):set_string("infotext", S("TA2 Power Generator"))
 	end,
 	
@@ -137,21 +112,8 @@ minetest.register_node("techage:ta2_generator_off", {
 		techage.del_mem(pos)
 	end,
 	
-	tubelib2_on_update2 = tubelib2_on_update2,
+	on_timer = node_timer_off,
-	on_timer = node_timer,
+	get_generator_data = get_generator_data,
-	networks = {
-		ele1 = {
-			sides = {R = 1},
-			ntype = "gen1",
-			nominal = PWR_PERF,
-		},
-		axle = {
-			sides = {L = 1},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-		},
-	}
 })
 
 minetest.register_node("techage:ta2_generator_on", {
@@ -199,21 +161,8 @@ minetest.register_node("techage:ta2_generator_on", {
 	groups = {not_in_creative_inventory=1},
 	diggable = false,
 
-	tubelib2_on_update2 = tubelib2_on_update2,
+	on_timer = node_timer_on,
-	on_timer = node_timer,
+	get_generator_data = get_generator_data,
-	networks = {
-		ele1 = {
-			sides = {R = 1},
-			ntype = "gen1",
-			nominal = PWR_PERF,
-		},
-		axle = {
-			sides = {L = 1},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-		},
-	}
 })
 
 techage.register_node({"techage:ta2_generator_off", "techage:ta2_generator_on"}, {
@@ -222,8 +171,8 @@ techage.register_node({"techage:ta2_generator_off", "techage:ta2_generator_on"},
 	end,
 })
 
-Cable:add_secondary_node_names({"techage:ta2_generator_off", "techage:ta2_generator_on"})
+power.register_nodes({"techage:ta2_generator_off", "techage:ta2_generator_on"}, Axle, "con", {"L"})
-Axle:add_secondary_node_names({"techage:ta2_generator_off", "techage:ta2_generator_on"})
+power.register_nodes({"techage:ta2_generator_off", "techage:ta2_generator_on"}, Cable, "gen", {"R"})
 
 minetest.register_craft({
 	output = "techage:ta2_generator_off",

ta3_power/power2axle.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -20,17 +20,15 @@ local S2P = minetest.string_to_pos
 
 local Cable = techage.ElectricCable
 local Axle = techage.Axle
-local power = techage.power
+local power = networks.power
-local networks = techage.networks
 
 local CYCLE_TIME = 2
 local PWR_PERF = 40
 
 -- Axles texture animation
 local function switch_axles(pos, on)
-	for _,outdir in ipairs(networks.get_node_connections(pos, "axle")) do
+	local outdir = M(pos):get_int("outdir")
-		Axle:switch_tube_line(pos, outdir, on and "on" or "off")
+	Axle:switch_tube_line(pos, outdir, on and "on" or "off")
-	end
 end
 
 local function swap_node(pos, name)
@@ -42,64 +40,48 @@ local function swap_node(pos, name)
 	minetest.swap_node(pos, node)
 end
 
-local function on_power(pos)
+local function node_timer_on(pos, elapsed)
 	local nvm = techage.get_nvm(pos)
-	nvm.ele1 = nvm.ele1 or {}
-	nvm.consumer_powered = true
-	M(pos):set_string("infotext", S("TA3 Electric Motor"))
-	swap_node(pos, "techage:ta3_motor_on")
-	nvm.ticks = 0
 	local outdir = M(pos):get_int("outdir")
-	nvm.ele1.curr_power = techage.power.needed_power(pos, Axle, outdir)
+	nvm.buffer = nvm.buffer or 0
-end
 	
-local function on_nopower(pos)
+	local amount = math.min(PWR_PERF * 2 - nvm.buffer, PWR_PERF)
-	local nvm = techage.get_nvm(pos)
+	local taken = power.consume_power(pos, Cable, networks.Flip[outdir], amount)
-	nvm.consumer_powered = false
+	nvm.buffer = nvm.buffer + taken - 1  -- some loss
-	if (nvm.ticks or 0) < 4 then
+	
-		M(pos):set_string("infotext", S("TA3 Electric Motor: Overload fault?\n(restart with right-click)"))
+	if nvm.buffer >= PWR_PERF then
+		nvm.provided = power.provide_power(pos, Axle, outdir, PWR_PERF)
+		nvm.load = power.get_storage_load(pos, Axle, outdir, PWR_PERF)
+		nvm.buffer = nvm.buffer - nvm.provided
 	end
-	nvm.ticks = 0
+	if amount > 0 and taken == 0 then
-end
+		swap_node(pos, "techage:ta3_motor_off")
-
+		switch_axles(pos, false)
-local function node_timer(pos, elapsed)
-	local nvm = techage.get_nvm(pos)
-	nvm.ele1 = nvm.ele1 or {}
-	
-	-- trigger network on consumer side
-	nvm.ticks = (nvm.ticks or 0) + 1
-	if nvm.ticks % 2 then
-		power.consumer_alive(pos, Cable, CYCLE_TIME)
-	end
-	
-	-- handle generator side delayed
-	if nvm.ticks > 3 then
 		local outdir = M(pos):get_int("outdir")
-		
+		nvm.running = false
-		if nvm.consumer_powered and not nvm.running_as_generator then
+		power.start_storage_calc(pos, Cable, outdir)
-			nvm.running_as_generator = true
-			power.generator_start(pos, Axle, CYCLE_TIME, outdir, nvm.max_power)
-			switch_axles(pos, true)
-		elseif not nvm.consumer_powered and nvm.running_as_generator then
-			nvm.running_as_generator = false
-			power.generator_stop(pos, Axle, outdir)
-			switch_axles(pos, false)
-		end
-		
-		if nvm.running_as_generator then
-			nvm.ele1.curr_power = power.generator_alive(pos, Axle, CYCLE_TIME, outdir, PWR_PERF) + 1
-		else
-			swap_node(pos, "techage:ta3_motor_off")
-		end
 	end
 	return true
 end
 		
-local function tubelib2_on_update2(pos, outdir, tlib2, node) 
+local function node_timer_off(pos, elapsed)
 	local nvm = techage.get_nvm(pos)
-	nvm.ele1 = nvm.ele1 or {}
+	local outdir = M(pos):get_int("outdir")
-	nvm.ele1.curr_power = 1
+	
-	power.update_network(pos, outdir, tlib2)
+	if power.power_available(pos, Cable) then
+		swap_node(pos, "techage:ta3_motor_on")
+		switch_axles(pos, true)
+		nvm.running = true
+		power.start_storage_calc(pos, Cable, outdir)
+	end
+	return true
+end
+
+local function get_generator_data(pos, tlib2)
+	local nvm = techage.get_nvm(pos)
+	if nvm.running then
+		return {level = (nvm.load or 0) / PWR_PERF, perf = PWR_PERF, capa = PWR_PERF * 2}
+	end
 end
 
 minetest.register_node("techage:ta3_motor_off", {
@@ -119,24 +101,10 @@ minetest.register_node("techage:ta3_motor_off", {
 	is_ground_content = false,
 
 	after_place_node = function(pos)
-		local nvm = techage.get_nvm(pos)
-		nvm.ele1 = nvm.ele1 or {}
-		nvm.ele1.curr_power = 1
-		nvm.consumer_powered = false
-		nvm.running_as_generator = false
 		M(pos):set_int("outdir", networks.side_to_outdir(pos, "R"))
-		M(pos):set_int("leftdir", networks.side_to_outdir(pos, "L"))
 		Cable:after_place_node(pos)
 		Axle:after_place_node(pos)
 		minetest.get_node_timer(pos):start(CYCLE_TIME)   
-		power.consumer_start(pos, Cable, CYCLE_TIME*2)
-		M(pos):set_string("infotext", S("TA3 Electric Motor"))
-	end,
-	
-	on_rightclick = function(pos, node, clicker)
-		local nvm = techage.get_nvm(pos)
-		nvm.ele1 = nvm.ele1 or {}
-		nvm.ele1.curr_power = 1
 		M(pos):set_string("infotext", S("TA3 Electric Motor"))
 	end,
 	
@@ -146,21 +114,8 @@ minetest.register_node("techage:ta3_motor_off", {
 		techage.del_mem(pos)
 	end,
 	
-	tubelib2_on_update2 = tubelib2_on_update2,
+	on_timer = node_timer_off,
-	on_timer = node_timer,
+	get_generator_data = get_generator_data,
-	networks = {
-		axle = {
-			sides = {R = 1},
-			ntype = "gen1",
-			nominal = PWR_PERF,
-		},
-		ele1 = {
-			sides = {L = 1},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-		},
-	}
 })
 
 minetest.register_node("techage:ta3_motor_on", {
@@ -208,21 +163,8 @@ minetest.register_node("techage:ta3_motor_on", {
 	groups = {not_in_creative_inventory=1},
 	diggable = false,
 
-	tubelib2_on_update2 = tubelib2_on_update2,
+	on_timer = node_timer_on,
-	on_timer = node_timer,
+	get_generator_data = get_generator_data,
-	networks = {
-		axle = {
-			sides = {R = 1},
-			ntype = "gen1",
-			nominal = PWR_PERF,
-		},
-		ele1 = {
-			sides = {L = 1},
-			ntype = "con1",
-			on_power = on_power,
-			on_nopower = on_nopower,
-		},
-	}
 })
 
 techage.register_node({"techage:ta3_motor_off", "techage:ta3_motor_on"}, {
@@ -231,8 +173,8 @@ techage.register_node({"techage:ta3_motor_off", "techage:ta3_motor_on"}, {
 	end,
 })
 
-Cable:add_secondary_node_names({"techage:ta3_motor_off", "techage:ta3_motor_on"})
+power.register_nodes({"techage:ta3_motor_off", "techage:ta3_motor_on"}, Axle, "gen", {"R"})
-Axle:add_secondary_node_names({"techage:ta3_motor_off", "techage:ta3_motor_on"})
+power.register_nodes({"techage:ta3_motor_off", "techage:ta3_motor_on"}, Cable, "con", {"L"})
 
 minetest.register_craft({
 	output = "techage:ta3_motor_off",

ta3_power/tiny_generator.lua

@@ -3,7 +3,7 @@
 	TechAge
 	=======
 
-	Copyright (C) 2019-2020 Joachim Stolberg
+	Copyright (C) 2019-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
@@ -18,11 +18,10 @@ local S = techage.S
 
 local Cable = techage.ElectricCable
 local firebox = techage.firebox
-local power = techage.power
 local fuel = techage.fuel
 local Pipe = techage.LiquidPipe
-local liquid = techage.liquid
+local power = networks.power
-local networks = techage.networks
+local liquid = networks.liquid
 
 local CYCLE_TIME = 2
 local PWR_CAPA = 12
@@ -34,12 +33,12 @@ local function formspec(self, pos, nvm)
 		default.gui_bg_img..
 		default.gui_slots..
 		"box[0,-0.1;4.8,0.5;#c6e8ff]"..
-		"label[1.5,-0.1;"..minetest.colorize( "#000000", S("Tiny Generator")).."]"..
+		"label[0.2,-0.1;"..minetest.colorize( "#000000", S("Tiny Generator")).."]"..
 		fuel.fuel_container(0, 0.9, nvm)..
 		"image[1.4,1.6;1,1;techage_form_arrow_bg.png^[transformR270]"..
 		"image_button[1.4,3.2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[1.5,3;1,1;"..self:get_state_tooltip(nvm).."]"..
-		power.formspec_label_bar(pos, 2.5, 0.8, S("Electricity"), PWR_CAPA, nvm.provided)
+		techage.formspec_power_bar(pos, 2.5, 0.8, S("Electricity"), nvm.provided, PWR_CAPA)
 end
 
 local function play_sound(pos)
@@ -74,7 +73,7 @@ end
 local function start_node(pos, nvm, state)
 	nvm.running = true -- needed by fuel_lib
 	local outdir = M(pos):get_int("outdir")
-	power.generator_start(pos, Cable, CYCLE_TIME, outdir)
+	power.start_storage_calc(pos, Cable, outdir)
 	play_sound(pos)
 end
 
@@ -82,7 +81,7 @@ local function stop_node(pos, nvm, state)
 	nvm.running = false
 	nvm.provided = 0
 	local outdir = M(pos):get_int("outdir")
-	power.generator_stop(pos, Cable, outdir)
+	power.start_storage_calc(pos, Cable, outdir)
 	stop_sound(pos)
 end
 
@@ -122,15 +121,19 @@ local function burning(pos, nvm)
 end
 
 local function node_timer(pos, elapsed)
+	local meta = M(pos)
 	local nvm = techage.get_nvm(pos)
-	local outdir = M(pos):get_int("outdir")
+	local outdir = meta:get_int("outdir")
+	local tp1 = tonumber(meta:get_string("termpoint1"))
+	local tp2 = tonumber(meta:get_string("termpoint2"))
 	if nvm.running and burning(pos, nvm) then
-		nvm.provided = power.generator_alive(pos, Cable, CYCLE_TIME, outdir)
+		nvm.provided = power.provide_power(pos, Cable, outdir, PWR_CAPA, tp1, tp2)
+		nvm.load = power.get_storage_load(pos, Cable, outdir, PWR_CAPA)
 	else
 		nvm.provided = 0
 	end
 	if techage.is_activeformspec(pos) then
-		M(pos):set_string("formspec", formspec(State, pos, nvm))
+		meta:set_string("formspec", formspec(State, pos, nvm))
 	end
 	return State:is_active(nvm)
 end
@@ -150,42 +153,12 @@ local function on_rightclick(pos, node, clicker)
 	M(pos):set_string("formspec", formspec(State, pos, nvm))
 end
 
-local liquid_def = {
+local function get_generator_data(pos, tlib2)
-	fuel_cat = fuel.BT_NAPHTHA,
+	local nvm = techage.get_nvm(pos)
-	capa = fuel.CAPACITY,
+	if nvm.running then
-	peek = liquid.srv_peek,
+		return {level = (nvm.load or 0) / PWR_CAPA, perf = PWR_CAPA, capa = PWR_CAPA * 2}
-	put = function(pos, indir, name, amount)
-		if fuel.valid_fuel(name, fuel.BT_OIL) then
-			local res = liquid.srv_put(pos, indir, name, amount)
-			if techage.is_activeformspec(pos) then
-				local nvm = techage.get_nvm(pos)
-				M(pos):set_string("formspec", formspec(State, pos, nvm))
-			end
-			return res
-		end
-		return amount
-	end,
-	take = function(pos, indir, name, amount)
-		amount, name = liquid.srv_take(pos, indir, name, amount)
-		if techage.is_activeformspec(pos) then
-			local nvm = techage.get_nvm(pos)
-			M(pos):set_string("formspec", formspec(State, pos, nvm))
-		end
-		return amount, name
 	end
-}
+end
-
-local net_def = {
-	pipe2 = {
-		sides = techage.networks.AllSides, -- Pipe connection sides
-		ntype = "tank",
-	},
-	ele1 = {
-		sides = {R = 1},
-		ntype = "gen1",
-		nominal = PWR_CAPA,
-	},
-}
 
 minetest.register_node("techage:tiny_generator", {
 	description = S("TA3 Tiny Power Generator"),
@@ -221,13 +194,13 @@ minetest.register_node("techage:tiny_generator", {
 		techage.del_mem(pos)
 	end,
 
+	get_generator_data = get_generator_data,
+	ta3_formspec = techage.generator_settings("ta3", PWR_CAPA), 
 	on_receive_fields = on_receive_fields,
 	on_rightclick = on_rightclick,
 	on_punch = fuel.on_punch,
 	on_timer = node_timer,
 	can_dig = fuel.can_dig,
-	liquid = liquid_def,
-	networks = net_def,
 })
 
 minetest.register_node("techage:tiny_generator_on", {
@@ -268,17 +241,56 @@ minetest.register_node("techage:tiny_generator_on", {
 	on_rotate = screwdriver.disallow,
 	is_ground_content = false,
 
+	get_generator_data = get_generator_data,
+	ta3_formspec = techage.generator_settings("ta3", PWR_CAPA), 
 	on_receive_fields = on_receive_fields,
 	on_rightclick = on_rightclick,
 	on_punch = fuel.on_punch,
 	on_timer = node_timer,
 	can_dig = fuel.can_dig,
-	liquid = liquid_def,
-	networks = net_def,
 })
 
-Pipe:add_secondary_node_names({"techage:tiny_generator", "techage:tiny_generator_on"})
+local liquid_def = {
-Cable:add_secondary_node_names({"techage:tiny_generator", "techage:tiny_generator_on"})
+	fuel_cat = fuel.BT_GASOLINE,
+	capa = fuel.CAPACITY,
+	peek = function(pos)
+		local nvm = techage.get_nvm(pos)
+		return liquid.srv_peek(nvm)
+	end,
+	put = function(pos, indir, name, amount)
+		if techage.fuel.valid_fuel(name, fuel.BT_GASOLINE) then
+			local nvm = techage.get_nvm(pos)
+			local leftover = liquid.srv_put(nvm, name, amount, fuel.CAPACITY)
+			if techage.is_activeformspec(pos) then
+				local nvm = techage.get_nvm(pos)
+				M(pos):set_string("formspec", formspec(State, pos, nvm))
+			end
+			return leftover
+		end
+		return amount
+	end,
+	take = function(pos, indir, name, amount)
+		local nvm = techage.get_nvm(pos)
+		local taken = liquid.srv_take(nvm, name, amount)
+		if techage.is_activeformspec(pos) then
+			local nvm = techage.get_nvm(pos)
+			M(pos):set_string("formspec", formspec(State, pos, nvm))
+		end
+		return taken
+	end,
+	untake = function(pos, indir, name, amount)
+		local nvm = techage.get_nvm(pos)
+		local leftover = liquid.srv_put(nvm, name, amount, fuel.CAPACITY)
+		if techage.is_activeformspec(pos) then
+			local nvm = techage.get_nvm(pos)
+			M(pos):set_string("formspec", formspec(State, pos, nvm))
+		end
+		return leftover
+	end,
+}
+
+power.register_nodes({"techage:tiny_generator", "techage:tiny_generator_on"}, Cable, "gen", {"R"})
+liquid.register_nodes({"techage:tiny_generator", "techage:tiny_generator_on"}, Pipe, "tank", nil, liquid_def)
 
 techage.register_node({"techage:tiny_generator", "techage:tiny_generator_on"}, {
 	on_recv_message = function(pos, src, topic, payload)

tools/repairkit.lua

@@ -3,12 +3,11 @@
 	TechAge
 	=======
 
-	Copyright (C) 2017-2019 Joachim Stolberg
+	Copyright (C) 2017-2021 Joachim Stolberg
 
 	AGPL v3
 	See LICENSE.txt for more information
 
-	repairkit.lua:
 ]]--
 
 -- for lazy programmers
@@ -18,178 +17,23 @@ local S = techage.S
 local Cable1 = techage.ElectricCable
 local Cable2 = techage.TA4_Cable
 local Pipe2 = techage.LiquidPipe
-local networks = techage.networks
+local menu = dofile(minetest.get_modpath("techage") .. "/tools/submenu.lua")   
-
-local ListOfNodes = {
-	["techage:generator"] = true, 
-	["techage:generator_on"] = true,
-	["techage:ta4_generator"] = true,
-	["techage:ta4_generator_on"] = true,
-	["techage:ta4_fuelcell"] = true,
-	["techage:ta4_fuelcell_on"] = true,
-	["techage:t3_pump"] = true,
-	["techage:t3_pump_on"] = true,
-	["techage:t4_pump"] = true,
-	["techage:t4_pump_on"] = true,
-	["techage:ta4_solar_inverter"] = true,
-	["techage:flywheel"] = true,
-	["techage:flywheel_on"] = true,
-	["techage:tiny_generator"] = true,
-	["techage:tiny_generator_on"] = true,
-	["techage:ta4_electrolyzer"] = true,
-	["techage:ta4_electrolyzer_on"] = true,
-	["techage:oilfirebox"] = true,
-}
-
-
-local function delete_data(pos)
-	local meta = minetest.get_meta(pos)
-	local owner = meta:get_string("owner")
-	local number = meta:get_string("number")
-	local node_number = meta:get_string("node_number")
-	tubelib2.del_mem(pos)
-	meta:from_table(nil)
-	meta:set_string("owner", owner)
-	meta:set_string("number", number)
-	meta:set_string("node_number", node_number)
-end
-
-local function inv_get_count(inv, listname, size)
-	local cnt = 0
-	for i = 1,size do
-		cnt = cnt + inv:get_stack(listname, i):get_count() 
-	end
-	return cnt
-end
-
-local function inv_get_name(inv, listname, size)
-	for i = 1,size do
-		local name = inv:get_stack(listname, i):get_name() 
-		if name ~= "" then 
-			return name
-		end
-	end
-	return ""
-end
-
-local function inv_clear(inv, listname, size)
-	for i = 1,size do
-		inv:set_stack(listname, i, nil)
-	end
-end
-
-local function restore_inv_content(pos, listname, size)
-	local inv = M(pos):get_inventory()
-	local count = inv_get_count(inv, listname, size)
-	if count > 0 then
-		local nvm = techage.get_nvm(pos)
-		nvm.liquid = nvm.liquid or {}
-		nvm.liquid.amount = count
-		nvm.liquid.name = inv_get_name(inv, listname, size)
-		inv:set_stack(listname, 1, nil)
-		inv_clear(inv, listname, size)
-		return true
-	end
-	return false
-end
-
-local function init_data(pos, netw)
-	local sides = netw.ele1 and netw.ele1.sides
-	if sides and sides["R"] then
-		M(pos):set_int("outdir", networks.side_to_outdir(pos, "R"))
-		M(pos):set_string("infotext", "repaired")
-	end
-	
-	sides = netw.pipe2 and netw.pipe2.sides
-	if sides and sides["R"] then
-		M(pos):set_int("outdir", networks.side_to_outdir(pos, "R"))
-		M(pos):set_string("infotext", "repaired")
-	end
-		
-	sides = netw.ele2 and netw.ele2.sides
-	if sides and sides["L"] then
-		M(pos):set_int("leftdir", networks.side_to_outdir(pos, "L"))
-	end
-	
-	sides = netw.axle and netw.axle.sides
-	if sides and sides["R"] then
-		M(pos):set_int("outdir", networks.side_to_outdir(pos, "R"))
-	end
-	
-	Cable1:after_place_node(pos)
-	Cable2:after_place_node(pos)
-	Pipe2:after_place_node(pos)
-end
-
-
-local function repair(itemstack, user, pointed_thing)
-	local pos = pointed_thing.under
-	if pos and user then
-		if minetest.is_protected(pos, user:get_player_name()) then
-			return itemstack
-		end
-		
-		local number = techage.get_node_number(pos)
-		local node = minetest.get_node(pos)
-		local ndef = minetest.registered_nodes[node.name]
-		if ndef then
-			local netw = ndef.networks
-			if netw and ListOfNodes[node.name] then
-				if node.name == "techage:tiny_generator" or node.name == "techage:tiny_generator_on" then
-					restore_inv_content(pos, "fuel", 1)
-				elseif node.name == "techage:oilfirebox" then
-					restore_inv_content(pos, "fuel", 1)
-				elseif node.name == "techage:ta4_fuelcell" or node.name == "techage:ta4_fuelcell_on" then
-					restore_inv_content(pos, "src", 4)
-				elseif node.name == "techage:ta4_electrolyzer" or node.name == "techage:ta4_electrolyzer_on" then
-					restore_inv_content(pos, "dst", 1)
-				end
-				delete_data(pos)
-				init_data(pos, netw)
-				minetest.chat_send_player(user:get_player_name(), ndef.description.." "..S("repaired"))
-				itemstack:add_wear(65636/200)
-				return itemstack
-			end
-			
-			if netw and netw.ele1 and netw.ele1.ntype == "junc" then
-				if ndef.after_place_node and ndef.tubelib2_on_update2 then
-					ndef.after_place_node(pos)
-					ndef.tubelib2_on_update2(pos, 0, Cable1)
-					minetest.chat_send_player(user:get_player_name(), ndef.description.." "..S("repaired"))
-					itemstack:add_wear(65636/200)
-					return itemstack
-				end
-			end
-		
-			if netw and netw.ele2 and netw.ele2.ntype == "junc" then
-				if ndef.after_place_node and ndef.tubelib2_on_update2 then
-					ndef.after_place_node(pos)
-					ndef.tubelib2_on_update2(pos, 0, Cable2)
-					minetest.chat_send_player(user:get_player_name(), ndef.description.." "..S("repaired"))
-					itemstack:add_wear(65636/200)
-					return itemstack
-				end
-			end
-		end
-	end
-	return itemstack
-end	
 
 local function network_check(start_pos, Cable, player_name)
-	local ndef = techage.networks.net_def(start_pos, Cable.tube_type)
+--	local ndef = techage.networks.net_def(start_pos, Cable.tube_type)
-	local outdir = nil
+--	local outdir = nil
-	local num = 0
+--	local num = 0
-	if ndef and ndef.ntype ~= "junc" then
+--	if ndef and ndef.ntype ~= "junc" then
-		outdir = M(start_pos):get_int("outdir")
+--		outdir = M(start_pos):get_int("outdir")
-	end
+--	end
-	networks.connection_walk(start_pos, outdir, Cable, function(pos, indir, node)
+--	networks.connection_walk(start_pos, outdir, Cable, function(pos, indir, node)
-		local distance = vector.distance(start_pos, pos)
+--		local distance = vector.distance(start_pos, pos)
-		num = num + 1
+--		num = num + 1
-		if distance < 50 and num < 100 then
+--		if distance < 50 and num < 100 then
-			local state = techage.power.power_available(pos, Cable) and "power" or "no power"
+--			local state = techage.power.power_available(pos, Cable) and "power" or "no power"
-			techage.mark_position(player_name, pos, state, "#ff0000", 6)
+--			techage.mark_position(player_name, pos, state, "#ff0000", 6)
-		end
+--		end
-	end)
+--	end)
 end	
 
 local function read_state(itemstack, user, pointed_thing)
@@ -233,7 +77,7 @@ local function read_state(itemstack, user, pointed_thing)
 				local info = techage.send_single("0", number, "info", nil)
 				if info and info ~= "" and info ~= "unsupported" then
 					info = dump(info)
-					minetest.chat_send_player(user:get_player_name(), ndef.description.." "..number..": Supported Commands:\n"..info.."    ")
+					minetest.chat_send_player(user:get_player_name(), ndef.description.." "..number..":\n"..info.."    ")
 				end
 				local state = techage.send_single("0", number, "state", nil)
 				if state and state ~= "" and state ~= "unsupported" then
@@ -284,13 +128,64 @@ local function read_state(itemstack, user, pointed_thing)
 	end
 end
 
+local context = {}
+
+local function settings_menu(pos, playername)
+	local number = techage.get_node_number(pos)
+	local node = minetest.get_node(pos)
+	local ndef = minetest.registered_nodes[node.name]
+	local form_def = ndef and (ndef.ta3_formspec or ndef.ta4_formspec)
+	
+	context[playername] = pos
+	if form_def then
+		minetest.show_formspec(playername, "techage:ta_formspec", menu.generate_formspec(pos, ndef, form_def))
+	end
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+    if formname ~= "techage:ta_formspec" then
+        return false
+    end
+
+	local playername = player:get_player_name()
+	local pos = context[playername]
+	if pos then
+		--context[playername] = nil
+		local number = techage.get_node_number(pos)
+		local node = minetest.get_node(pos)
+		local ndef = minetest.registered_nodes[node.name]
+		local form_def = ndef and (ndef.ta3_formspec or ndef.ta4_formspec)
+		
+		if form_def then
+			if menu.eval_input(pos, ndef, form_def, fields) then
+				--context[playername] = pos
+				minetest.after(0.2, function()
+					minetest.show_formspec(playername, "techage:ta_formspec", menu.generate_formspec(pos, ndef, form_def))
+				end)
+			end
+		end
+	end
+	return true
+end)
+
+
+local function on_place(itemstack, placer, pointed_thing)
+	if pointed_thing.type == "node" then
+		local pos = pointed_thing.under
+		local playername = placer:get_player_name()
+		if placer:get_player_control().sneak then
+			settings_menu(pos, playername)
+		end
+	end
+end
+
 minetest.register_tool("techage:repairkit", {
 	description = S("TechAge Repair Kit"),
 	inventory_image = "techage_repairkit.png",
 	wield_image = "techage_repairkit.png^[transformR270",
 	groups = {cracky=1, book=1},
-	on_use = repair,
+	--on_use = repair,
-	on_place = repair,
+	--on_place = repair,
 	node_placement_prediction = "",
 	stack_max = 1,
 })
@@ -302,21 +197,12 @@ minetest.register_tool("techage:end_wrench", {
 	wield_image = "techage_end_wrench.png",
 	groups = {cracky=1, book=1},
 	on_use = read_state,
-	on_place = read_state,
+	on_place = on_place,
 	node_placement_prediction = "",
 	liquids_pointable = true,
 	stack_max = 1,
 })
 
---minetest.register_craft({
---	output = "techage:repairkit",
---	recipe = {
---		{"", "basic_materials:gear_steel", ""},
---		{"", "techage:end_wrench", ""},
---		{"", "basic_materials:oil_extract", ""},
---	},
---})
-
 minetest.register_craft({
 	output = "techage:end_wrench",
 	recipe = {

tools/submenu.lua

@@ -0,0 +1,190 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019-2021 Joachim Stolberg
+
+	AGPL v3
+	See LICENSE.txt for more information
+	
+    A formspec control to generate formspec strings for machine settings and monitoring
+]]--
+
+local S = techage.S
+
+local menu = {}
+
+local function index(list, x)
+	for idx, v in ipairs(list) do
+		if v == x then return idx end
+	end
+	return nil
+end
+
+
+-- generate the formspec string to be placed into a container frame
+local function generate_formspec_substring(pos, meta, form_def)
+	local tbl = {}
+	if meta and form_def then
+		local nvm = techage.get_nvm(pos)
+		
+		for i,elem in ipairs(form_def) do
+			local offs = (i - 1) * 0.9 - 0.2
+			tbl[#tbl+1] = "label[0," .. offs .. ";" .. minetest.formspec_escape(elem.label) .. ":]"
+			tbl[#tbl+1] = "tooltip[0," .. offs .. ";4,1;" .. elem.tooltip .. "]"
+			if elem.type == "number" then
+				local val = meta:get_int(elem.name)
+				if nvm.running then
+					tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. val .. "]"
+				else
+					tbl[#tbl+1] = "field[5," .. (offs+0.2) .. ";5.3,1;" .. elem.name .. ";;" .. val .. "]"
+				end
+			elseif elem.type == "numbers" then
+				local val = meta:get_string(elem.name)
+				if nvm.running then
+					tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. val .. "]"
+				else
+					tbl[#tbl+1] = "field[5," .. (offs+0.2) .. ";5.3,1;" .. elem.name .. ";;" .. val .. "]"
+				end
+			elseif elem.type == "float" then
+				local val = tonumber(meta:get_string(elem.name)) or 0
+				if nvm.running then
+					tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. val .. "]"
+				else
+					tbl[#tbl+1] = "field[5," .. (offs+0.2) .. ";5.3,1;" .. elem.name .. ";;" .. val .. "]"
+				end
+			elseif elem.type == "ascii" then
+				local val = meta:get_string(elem.name)
+				if nvm.running then
+					tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. minetest.formspec_escape(val) .. "]"
+				else
+					tbl[#tbl+1] = "field[5," .. (offs+0.2) .. ";5.3,1;" .. elem.name .. ";;" .. minetest.formspec_escape(val) .. "]"
+				end
+			elseif elem.type == "const" then
+				tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. elem.value .. "]"
+			elseif elem.type == "output" then
+				local val = nvm[elem.name] or ""
+				if tonumber(val) then
+					val = techage.round(val)
+				end
+				tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. val .. "]"
+			elseif elem.type == "dropdown" then
+				local l = elem.choices:split(",")
+				if nvm.running then
+					local val = meta:get_string(elem.name) or ""
+					tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. val .. "]"
+				else
+					local val = meta:get_string(elem.name) or ""
+					local idx = index(l, val) or 1
+					tbl[#tbl+1] = "dropdown[4.72," .. (offs) .. ";5.5,1.4;" .. elem.name .. ";" .. elem.choices .. ";" .. idx .. "]"
+				end
+			end
+		end
+	end
+	return table.concat(tbl, "")
+end
+
+local function value_check(elem, value)
+	if elem.check then
+		return elem.check(value)
+	end
+	return true
+end
+	
+local function evaluate_data(pos, meta, form_def, fields)
+	local res = true
+	
+	if meta and form_def then
+		local nvm = techage.get_nvm(pos)
+		if not nvm.running then
+		
+			for idx,elem in ipairs(form_def) do
+				if elem.type == "number" then	
+					if fields[elem.name] then
+						if fields[elem.name]:find("^[%d ]+$") then
+							local val = tonumber(fields[elem.name])
+							if value_check(elem, val) then 
+								meta:set_int(elem.name, val)
+								print("set_int", elem.name, val)
+							else
+								res = false
+							end
+						else
+							res = false
+						end
+					end
+				elseif elem.type == "numbers" then	
+					if fields[elem.name] then
+						if fields[elem.name]:find("^[%d ]+$") and value_check(elem, fields[elem.name]) then 
+							meta:set_string(elem.name, fields[elem.name])
+						else
+							res = false
+						end
+					end
+				elseif elem.type == "float" then
+					if fields[elem.name] then
+						local val = tonumber(fields[elem.name])
+						if val and value_check(elem, val) then 
+							meta:set_string(elem.name, val)
+						else
+							res = false
+						end
+					end
+				elseif elem.type == "ascii" then	
+					if fields[elem.name] then
+						if value_check(elem, fields[elem.name]) then
+							meta:set_string(elem.name, fields[elem.name])
+						else
+							res = false
+						end
+					end
+				elseif elem.type == "dropdown" then	
+					if fields[elem.name] ~= nil then
+						meta:set_string(elem.name, fields[elem.name])
+					end
+				end
+			end
+		end
+	end
+	return res
+end
+
+function menu.generate_formspec(pos, ndef, form_def)
+	local meta = minetest.get_meta(pos)
+	local number = techage.get_node_number(pos)
+	local mem = techage.get_mem(pos)
+	mem.star = ((mem.star or 0) + 1) % 2
+	local star = mem.star == 1 and "*" or ""
+	
+	if meta and number and ndef and form_def then
+		local title = ndef.description .. " (" .. number .. ")"
+	
+		return "size[10,9]" ..
+			default.gui_bg ..
+			default.gui_bg_img ..
+			default.gui_slots ..
+			"box[0,-0.1;9.8,0.5;#c6e8ff]" ..
+			"label[0.2,-0.1;" .. minetest.colorize( "#000000", title) .. "]" ..
+		    "label[9.5,-0.1;" .. minetest.colorize( "#000000", star) .. "]" ..
+			"container[0,1]" ..
+			generate_formspec_substring(pos, meta, form_def) ..
+			"container_end[]" ..
+			"button[0.5,8.4;3,1;refresh;" .. S("Refresh") .. "]" ..
+			"button_exit[3.5,8.4;3,1;cancel;" .. S("Cancel") .. "]" ..
+			"button[6.5,8.4;3,1;save;" .. S("Save") .. "]"
+	end
+	return ""
+end
+
+function menu.eval_input(pos, ndef, form_def, fields)	
+	--print(dump(fields))
+	if fields.save then
+		local meta = minetest.get_meta(pos)
+		evaluate_data(pos, meta, form_def, fields)
+	end
+	return fields.refresh or fields.save
+end
+
+
+return menu