power markers for info tool added

error message for inverter and further improvements

basis/mark2.lua

@@ -0,0 +1,67 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019 Joachim Stolberg
+
+	GPL v3
+	See LICENSE.txt for more information
+
+	mark.lua:
+	
+]]--
+
+local marker_region = {}
+
+function techage.unmark_position(name)
+	if marker_region[name] ~= nil then --marker already exists
+		--wip: make the area stay loaded somehow
+		for _, entity in ipairs(marker_region[name]) do
+			entity:remove()
+		end
+		marker_region[name] = nil
+	end
+end
+
+function techage.mark_position(name, pos, nametag, color)
+	local marker = minetest.add_entity(pos, "techage:position_cube")
+	if marker ~= nil then
+		marker:set_nametag_attributes({color = color, text = nametag})
+		marker:get_luaentity().player_name = name
+		if not marker_region[name] then
+			marker_region[name] = {}
+		end
+		marker_region[name][#marker_region[name] + 1] = marker
+	end
+	minetest.after(30, techage.unmark_position, name)
+end
+
+minetest.register_entity(":techage:position_cube", {
+	initial_properties = {
+		visual = "cube",
+		textures = {
+			"techage_cube_mark.png",
+			"techage_cube_mark.png",
+			"techage_cube_mark.png",
+			"techage_cube_mark.png",
+			"techage_cube_mark.png",
+			"techage_cube_mark.png",
+		},
+		--use_texture_alpha = true,
+		physical = false,
+		visual_size = {x = 2, y = 2},
+		collisionbox = {-1,-1,-1, 1,1,1},
+		glow = 8,
+	},
+	on_step = function(self, dtime)
+		if marker_region[self.player_name] == nil then
+			self.object:remove()
+			return
+		end
+	end,
+	on_punch = function(self, hitter)
+		techage.unmark_position(self.player_name)
+	end,
+})
+

basis/node_states.lua

@@ -219,8 +219,9 @@ end
 function NodeStates:start(pos, mem)
 	local state = mem.techage_state or STOPPED
 	if state ~= RUNNING and state ~= FAULT then
-		if not self.can_start(pos, mem, state) then
-			self:fault(pos, mem)
+		local res = self.can_start(pos, mem, state)
+		if res ~= true then
+			self:fault(pos, mem, res)
 			return false
 		end
 		if not self.has_power(pos, mem, state) then
@@ -338,8 +339,9 @@ function NodeStates:nopower(pos, mem)
 	return false
 end	
 
-function NodeStates:fault(pos, mem)
+function NodeStates:fault(pos, mem, err_string)
 	local state = mem.techage_state or STOPPED
+	err_string = err_string or "fault"
 	if state == RUNNING or state == STOPPED then
 		mem.techage_state = FAULT
 		if self.node_name_passive then
@@ -347,7 +349,7 @@ function NodeStates:fault(pos, mem)
 		end
 		if self.infotext_name then
 			local number = M(pos):get_string("node_number")
-			M(pos):set_string("infotext", self.infotext_name.." "..number..": fault")
+			M(pos):set_string("infotext", self.infotext_name.." "..number..": "..err_string)
 		end
 		if self.formspec_func then
 			M(pos):set_string("formspec", self.formspec_func(self, pos, mem))

energy_storage/generator.lua

@@ -132,7 +132,7 @@ techage.register_node({"techage:ta4_generator", "techage:ta4_generator_on"}, {
 		local mem = tubelib2.get_mem(pos)
 		if topic == "power" then
 			mem.remote_trigger = 2
-			return techage.power.power_available(pos, mem, 0)
+			return techage.power.power_network_available(pos)
 		elseif topic == "start" then
 			mem.remote_trigger = 2
 			swap_node(pos, "techage:ta4_generator_on")

init.lua

@@ -46,6 +46,7 @@ else
 	dofile(MP.."/basis/command.lua")  -- tubelib replacement
 	dofile(MP.."/basis/firebox_lib.lua")  -- common firebox functions
 	dofile(MP.."/basis/mark.lua")
+	dofile(MP.."/basis/mark2.lua")
 	dofile(MP.."/basis/assemble.lua")
 
 	-- Main doc

power/power.lua

@@ -237,6 +237,25 @@ local function connection_walk(pos, clbk)
 	end
 end
 
+-- walk limited by number of nodes and hops
+local function connection_walk2(pos, max_hops, max_nodes, clbk)
+	local mem = tubelib2.get_mem(pos)
+	mem.interrupted_dirs = mem.interrupted_dirs or {}
+	if clbk then
+		clbk(pos, mem, max_hops)
+	end
+	max_hops = max_hops - 1
+	if max_hops < 0 then return end
+	for out_dir,item in pairs(mem.connections or {}) do
+		if item.pos and not pos_already_reached(item.pos) and
+				not mem.interrupted_dirs[out_dir] then
+			max_nodes = max_nodes - 1
+			if max_nodes < 0 then return end
+			connection_walk2(item.pos, max_hops, max_nodes, clbk)
+		end
+	end
+end
+
 -- if no power available
 local function consumer_turn_off(pos, mem)
 	local pwr = PWR(pos)
@@ -584,3 +603,23 @@ function techage.power.get_power(start_pos)
 	return sum
 end	
 
+function techage.power.power_network_available(start_pos)
+	Route = {}
+	NumNodes = 0
+	pos_already_reached(start_pos) 
+	local sum = 0
+	connection_walk2(start_pos, 2, 3, function(pos, mem)
+		sum = sum + 1
+	end)
+	return sum > 1
+end	
+
+function techage.power.mark_nodes(name, start_pos)
+	Route = {}
+	NumNodes = 0
+	pos_already_reached(start_pos) 
+	techage.unmark_position(name)
+	connection_walk2(start_pos, 3, 100, function(pos, mem, max_hops)
+		techage.mark_position(name, pos, S(pos).." : "..(4 - max_hops), "#60FF60")
+	end)
+end	

solar/inverter.lua

@@ -25,7 +25,38 @@ local power = techage.power
 local CYCLE_TIME = 2
 local PWR_PERF = 120
 
+local function determine_power(pos, mem)
+	local time = minetest.get_timeofday() or 0
+	if time < 6.00/24.00 or time > 18.00/24.00 then
+		mem.ticks = 0
+		mem.max_power = 0
+		return
+	end
+	mem.ticks = mem.ticks or 0
+	if (mem.ticks % 20) == 0 then -- calculate max_power not to often
+		local dir = M(pos):get_int("left_dir")
+		-- We have to use get_connected_node_pos, because the inverter has already
+		-- a AC power connection. An additional DC power connection is not possibe,
+		-- so we have to start the connection_walk on the next node.
+		local pos1 = Solar:get_connected_node_pos(pos, dir)
+		mem.max_power = math.min(PWR_PERF, power.get_power(pos1))
+	else
+		mem.max_power = mem.max_power or 0
+	end
+	mem.ticks = mem.ticks + 1
+end
+
+local function determine_power_now(pos, mem)
+	local dir = M(pos):get_int("left_dir")
+	-- We have to use get_connected_node_pos, because the inverter has already
+	-- a AC power connection. An additional DC power connection is not possibe,
+	-- so we have to start the connection_walk on the next node.
+	local pos1 = Solar:get_connected_node_pos(pos, dir)
+	mem.max_power = math.min(PWR_PERF, power.get_power(pos1))
+end
+
 local function formspec(self, pos, mem)
+	determine_power_now(pos, mem)
 	local max_power = mem.max_power or 0
 	local delivered = mem.delivered or 0
 	local bar_in = techage.power.formspec_power_bar(max_power, max_power)
@@ -44,29 +75,9 @@ local function formspec(self, pos, mem)
 		"label[4,2.5;"..delivered.." ku]"
 end
 
-local function determine_power(pos, mem)
-	local time = minetest.get_timeofday() or 0
-	if time < 6.00/24.00 or time > 18.00/24.00 then
-		mem.ticks = 0
-		mem.max_power = 0
-		return
-	end
-	if (mem.ticks % 20) == 0 then -- calculate max_power not to often
-		local dir = M(pos):get_int("left_dir")
-		-- We have to use get_connected_node_pos, because the inverter has already
-		-- a AC power connection. An additional DC power connection is not possibe,
-		-- so we have to start the connection_walk on the next node.
-		local pos1 = Solar:get_connected_node_pos(pos, dir)
-		mem.max_power = math.min(PWR_PERF, power.get_power(pos1))
-	else
-		mem.max_power = mem.max_power or 0
-	end
-	mem.ticks = mem.ticks + 1
-end
-
 local function can_start(pos, mem, state)
 	determine_power(pos, mem)
-	return mem.max_power > 0
+	return mem.max_power > 0 or "no solar power"
 end
 
 local function start_node(pos, mem, state)
@@ -127,7 +138,7 @@ minetest.register_node("techage:ta4_solar_inverter", {
 	description = S("TA4 Solar Inverter"),
 	tiles = {
 		-- up, down, right, left, back, front
-		"techage_filling_ta4.png^techage_frame_ta4_top.png",
+		"techage_filling_ta4.png^techage_frame_ta4_top.png^techage_appl_arrow.png",
 		"techage_filling_ta4.png^techage_frame_ta4.png",
 		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_hole_electric.png",
 		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_ta4_cable.png",

tools/repairkit.lua

@@ -92,6 +92,7 @@ local function read_state(itemstack, user, pointed_thing)
 			end
 		elseif ndef and ndef.description then
 			if ndef.is_power_available then
+				techage.power.mark_nodes(user:get_player_name(), pos)
 				local power = ndef.is_power_available(pos)
 				if power and power.prim_available then
 					local text = "\nGenerators: "..power.prim_available.." ku\nAkkus: "..power.sec_available.." ku\nMachines: "..power.prim_needed.." ku\nNum Nodes: "..power.num_nodes.."\n"