solar panel added

init.lua

@@ -25,7 +25,8 @@ else
 		--pwr = true,  -- power distribution
 		sts = true,  -- status plots
 		--dbg = true,
-		dbg2 = true,
+		--dbg2 = true,
+		tst = true,
 	}
 
 	-- Basis features
@@ -154,4 +155,9 @@ else
 	dofile(MP.."/.test/source.lua")
 	dofile(MP.."/.test/akku.lua")
 	--dofile(MP.."/.test/switch.lua")
+	
+	-- Solar
+	dofile(MP.."/nodes/silicon.lua")
+	dofile(MP.."/solar/minicell.lua")
+	
 end

nodes/silicon.lua

@@ -0,0 +1,28 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019 Joachim Stolberg
+
+	LGPLv2.1+
+	See LICENSE.txt for more information
+	
+	TA4 Silicon Wafer
+	
+]]--
+
+local S = techage.S
+
+minetest.register_craftitem("techage:ta4_silicon_wafer", {
+	description = S("TA4 Silicon Wafer"),
+	inventory_image = "techage_silicon_wafer.png",
+})
+
+techage.furnace.register_recipe({
+	output = "techage:ta4_silicon_wafer 8",
+	recipe = {
+		"basic_materials:silicon", 
+	},
+	time = 6,
+})

power/power.lua

@@ -449,7 +449,7 @@ function techage.power.generator_alive(pos, mem)
 	if mem.pwr_is_master then
 		power_distribution(pos, mem, 1)
 	end
-	return mem.pwr_provided
+	return mem.pwr_provided or 0
 end
 
 --

solar/minicell.lua

@@ -0,0 +1,135 @@
+--[[
+
+	TechAge
+	=======
+
+	Copyright (C) 2019 Joachim Stolberg
+
+	LGPLv2.1+
+	See LICENSE.txt for more information
+
+	TA4 Streetlamp Solar Cell
+	
+]]--
+
+-- for lazy programmers
+local P = minetest.string_to_pos
+local M = minetest.get_meta
+
+local S = techage.S
+
+local CYCLE_TIME = 2
+local PWR_PERF = 1
+local PWR_CAPA = 30 * 20 -- default day
+
+minetest.after(2, function()
+	-- calculate the capacity depending on the day duration
+	PWR_CAPA = math.max(minetest.get_gametime() / minetest.get_day_count() / 2, PWR_CAPA)
+end)
+
+local Cable = techage.ElectricCable
+local power = techage.power
+
+local function node_timer(pos, elapsed)
+	local mem = tubelib2.get_mem(pos)
+	mem.capa = mem.capa or 0
+	pos.y = pos.y + 1
+	local light = minetest.get_node_light(pos)
+	pos.y = pos.y - 1
+	
+	if light >= (minetest.LIGHT_MAX - 1) then
+		if mem.providing then
+			power.generator_stop(pos, mem)
+			mem.providing = false
+			mem.provided = 0
+		end
+		mem.capa = math.min(mem.capa + PWR_PERF * 1.2, PWR_CAPA)
+	else
+		if mem.capa > 0 then
+			if not mem.providing then
+				power.generator_start(pos, mem, PWR_PERF)
+				mem.providing = true
+			end
+			mem.provided = power.generator_alive(pos, mem)
+			mem.capa = mem.capa - mem.provided
+		else
+			power.generator_stop(pos, mem)
+			mem.providing = false
+			mem.provided = 0
+			mem.capa = 0
+		end
+	end
+	mydbg("tst", "PWR_CAPA = "..PWR_CAPA..", mem.capa = "..mem.capa..", light = "..light)
+	return true
+end
+
+minetest.register_node("techage:ta4_solar_minicell", {
+	description = S("TA4 Streetlamp Solar Cell"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_solar_cell_mini_top.png",
+		"techage_solar_cell_mini_bottom.png",
+		"techage_solar_cell_mini_side.png",
+	},
+	drawtype = "nodebox",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-14/32, -8/32, -14/32,  14/32, -6/32, 14/32},
+			{-7/32, -16/32, -7/32,  7/32, -8/32, 7/32},
+		},
+	},
+	
+	after_place_node = function(pos)
+		local meta = minetest.get_meta(pos)
+		local number = techage.add_node(pos, "techage:ta4_solar_minicell")
+		meta:set_string("number", number)
+		meta:set_string("infotext", S("TA4 Streetlamp Solar Cell").." "..number)
+		local mem = tubelib2.get_mem(pos)
+		mem.capa = 0
+		mem.providing = false
+		minetest.get_node_timer(pos):start(CYCLE_TIME)
+	end,
+	
+	after_dig_node = function(pos)
+		techage.remove_node(pos)
+	end,
+	
+	paramtype2 = "facedir",
+	groups = {cracky=2, crumbly=2, choppy=2},
+	is_ground_content = false,
+	on_timer = node_timer,
+})
+
+techage.power.register_node({"techage:ta4_solar_minicell"}, {
+	power_network  = Cable,
+})
+
+techage.register_node({"techage:ta4_solar_minicell"}, {	
+	on_recv_message = function(pos, topic, payload)
+		local mem = tubelib2.get_mem(pos)
+		if topic == "state" then
+			if mem.providing then
+				if (mem.provided or 0) > 0 then
+					return "discharging"
+				else
+					return "unused"
+				end
+			else
+				return "charging"
+			end
+		else
+			return "unsupported"
+		end
+	end,
+})
+
+minetest.register_craft({
+	output = "techage:ta4_solar_minicell",
+	recipe = {
+		{"", "", ""},
+		{"techage:ta4_silicon_wafer", "techage:ta4_silicon_wafer", "techage:ta4_silicon_wafer"},
+		{"default:tin_ingot", "techage:iron_ingot", "default:copper_ingot"},
+	},
+})
+