many worldgen mods and gonna try technic now

mods/technic_plus/technic/machines/register/solar_array.lua

@@ -0,0 +1,66 @@
+
+local S = technic.getter
+
+function technic.register_solar_array(data)
+	local tier = data.tier
+	local ltier = string.lower(tier)
+
+	local run = function(pos, node)
+		-- The action here is to make the solar array produce power
+		-- Power is dependent on the light level and the height above ground
+		-- There are many ways to cheat by using other light sources like lamps.
+		-- As there is no way to determine if light is sunlight that is just a shame.
+		-- To take care of some of it solar panels do not work outside daylight hours or if
+		-- built below 0m
+		local pos1 = {}
+		local machine_name = S("Arrayed Solar %s Generator"):format(tier)
+		pos1.y = pos.y + 1
+		pos1.x = pos.x
+		pos1.z = pos.z
+
+		technic.get_or_load_node(pos1)
+		local light = minetest.get_node_light(pos1, nil)
+		local time_of_day = minetest.get_timeofday()
+		local meta = minetest.get_meta(pos)
+		light = light or 0
+
+		-- turn on array only during day time and if sufficient light
+		-- I know this is counter intuitive when cheating by using other light sources.
+		if light >= 12 and time_of_day >= 0.24 and time_of_day <= 0.76 and pos.y > 0 then
+			local charge_to_give = math.floor((light + pos.y) * data.power)
+			charge_to_give = math.max(charge_to_give, 0)
+			charge_to_give = math.min(charge_to_give, data.power * 50)
+			meta:set_string("infotext", S("@1 Active (@2)", machine_name,
+				technic.EU_string(charge_to_give)))
+			meta:set_int(tier.."_EU_supply", charge_to_give)
+		else
+			meta:set_string("infotext", S("%s Idle"):format(machine_name))
+			meta:set_int(tier.."_EU_supply", 0)
+		end
+	end
+
+	minetest.register_node("technic:solar_array_"..ltier, {
+		tiles = {"technic_"..ltier.."_solar_array_top.png",  "technic_"..ltier.."_solar_array_bottom.png",
+			 "technic_"..ltier.."_solar_array_side.png", "technic_"..ltier.."_solar_array_side.png",
+			 "technic_"..ltier.."_solar_array_side.png", "technic_"..ltier.."_solar_array_side.png"},
+		groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2, technic_machine=1, ["technic_"..ltier]=1},
+		connect_sides = {"bottom"},
+		sounds = default.node_sound_wood_defaults(),
+		description = S("Arrayed Solar %s Generator"):format(tier),
+		active = false,
+		drawtype = "nodebox",
+		paramtype = "light",
+		node_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		},
+		on_construct = function(pos)
+			local meta = minetest.get_meta(pos)
+			meta:set_int(tier.."_EU_supply", 0)
+		end,
+		technic_run = run,
+	})
+
+	technic.register_machine(tier, "technic:solar_array_"..ltier, technic.producer)
+end
+