Merge pull request #19 from kpoppel/master

Solar arrays and bug fixes to HV tier.

item_drop/item_entity.lua

@@ -109,7 +109,7 @@ minetest.register_entity(":__builtin:item", {
 			return
 		end
 		
-		if minetest.registered_nodes[name].liquidtype == "flowing" then
+		if minetest.registered_nodes[name] and minetest.registered_nodes[name].liquidtype == "flowing" then
 			get_flowing_dir = function(self)
 				local pos = self.object:getpos()
 				local param2 = minetest.env:get_node(pos).param2

technic/alloy_furnaces_commons.lua

@@ -36,4 +36,4 @@ register_alloy_recipe ("default:steel_ingot",3, "technic:chromium_ingot",1, "tec
 register_alloy_recipe ("technic:copper_dust",2, "technic:zinc_dust",1, "technic:brass_dust",3)
 register_alloy_recipe ("moreores:copper_ingot",2, "technic:zinc_ingot",1, "technic:brass_ingot",3)
 register_alloy_recipe ("default:sand",2, "technic:coal_dust",2, "technic:silicon_wafer",1)
-register_alloy_recipe ("technic:silicon_wafer",1, "technic:mithril_dust",1, "technic:doped_silicon_wafer",1)
+register_alloy_recipe ("technic:silicon_wafer",1, "technic:gold_dust",1, "technic:doped_silicon_wafer",1)

technic/battery_box_hv.lua

@@ -13,7 +13,7 @@ minetest.register_craft({
 	output = 'technic:hv_battery_box 1',
 	recipe = {
 		{'technic:mv_battery_box', 'technic:mv_battery_box', 'mv_technic:battery_box'},
-		{'technic:mv_battery_box', 'technic:transformer', 'mv_technic:battery_box'},
+		{'technic:mv_battery_box', 'technic:hv_transformer', 'mv_technic:battery_box'},
 		{'', 'technic:hv_cable', ''},
 	}
 }) 
@@ -78,7 +78,7 @@ minetest.register_node("technic:hv_battery_box"..i, {
 	drop="technic:hv_battery_box",
 	on_construct = function(pos)
 		local meta = minetest.env:get_meta(pos)
-		meta:set_string("infotext", "hv Battery box")
+		meta:set_string("infotext", "HV Battery box")
 		meta:set_float("technic_hv_power_machine", 1)
 		meta:set_string("formspec", battery_box_formspec)
 		local inv = meta:get_inventory()
@@ -342,7 +342,7 @@ end
 
 function check_HV_node_subp (PR_nodes,RE_nodes,HV_nodes,pos1)
 meta = minetest.env:get_meta(pos1)
-if meta:get_float("HV_cablelike")==1 then new_node_added=add_new_HVcable_node(HV_nodes,pos1) end
+if meta:get_float("hv_cablelike")==1 then new_node_added=add_new_HVcable_node(HV_nodes,pos1) end
 for i in ipairs(HV_machines) do
 	if minetest.env:get_node(pos1).name == HV_machines[i].machine_name then 
 		if HV_machines[i].machine_type == "PR" then

technic/init.lua

@@ -20,6 +20,7 @@ dofile(modpath.."/battery_box.lua")
 dofile(modpath.."/alloy_furnaces_commons.lua")
 dofile(modpath.."/alloy_furnace.lua")
 dofile(modpath.."/solar_panel.lua")
+dofile(modpath.."/solar_array_lv.lua")
 dofile(modpath.."/geothermal.lua")
 dofile(modpath.."/water_mill.lua")
 dofile(modpath.."/electric_furnace.lua")
@@ -34,7 +35,7 @@ dofile(modpath.."/cnc_nodes.lua")
 --MV machines
 dofile(modpath.."/wires_mv.lua")
 dofile(modpath.."/battery_box_mv.lua")
-dofile(modpath.."/solar_panel_mv.lua")
+dofile(modpath.."/solar_array_mv.lua")
 dofile(modpath.."/electric_furnace_mv.lua")
 dofile(modpath.."/alloy_furnace_mv.lua")
 dofile(modpath.."/forcefield.lua")
@@ -42,6 +43,7 @@ dofile(modpath.."/forcefield.lua")
 --HV machines
 dofile(modpath.."/wires_hv.lua")
 dofile(modpath.."/battery_box_hv.lua")
+dofile(modpath.."/solar_array_hv.lua")
 
 --Tools
 if technic.config:getBool("enable_mining_drill") then dofile(modpath.."/mining_drill.lua") end

technic/items.lua

@@ -160,6 +160,21 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craftitem( "technic:lv_transformer", {
+	description = "Low Voltage Transformer",
+	inventory_image = "technic_lv_transformer.png",
+	on_place_on_ground = minetest.craftitem_place_item,
+})
+
+minetest.register_craft({
+	output = 'technic:lv_transformer',
+	recipe = {
+		{'default:iron_lump',   'default:iron_lump', 'default:iron_lump'},
+		{'technic:copper_coil', 'default:iron_lump', 'technic:copper_coil'},
+		{'default:iron_lump',   'default:iron_lump', 'default:iron_lump'},
+	}
+})
+
 minetest.register_craftitem( "technic:mv_transformer", {
 	description = "Medium Voltage Transformer",
 	inventory_image = "technic_mv_transformer.png",
@@ -175,6 +190,21 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craftitem( "technic:hv_transformer", {
+	description = "High Voltage Transformer",
+	inventory_image = "technic_hv_transformer.png",
+	on_place_on_ground = minetest.craftitem_place_item,
+})
+
+minetest.register_craft({
+	output = 'technic:hv_transformer',
+	recipe = {
+		{'technic:stainless_steel_ingot', 'technic:stainless_steel_ingot', 'technic:stainless_steel_ingot'},
+		{'technic:copper_coil',           'technic:stainless_steel_ingot', 'technic:copper_coil'},
+		{'technic:stainless_steel_ingot', 'technic:stainless_steel_ingot', 'technic:stainless_steel_ingot'},
+	}
+})
+
 minetest.register_craftitem( "technic:control_logic_unit", {
 	description = "Control Logic Unit",
 	inventory_image = "technic_control_logic_unit.png",

technic/solar_array_hv.lua

@@ -0,0 +1,93 @@
+-- The high voltage solar array is an assembly of medium voltage arrays.
+-- The assembly can deliver high voltage levels and is a 20% less efficient
+-- compared to 5 individual medium voltage arrays due to losses in the transformer.
+-- However high voltage is supplied.
+-- Solar arrays are not able to store large amounts of energy.
+minetest.register_node("technic:solar_array_hv", {
+	tiles = {"technic_hv_solar_array_top.png", "technic_hv_solar_array_bottom.png", "technic_hv_solar_array_side.png",
+		 "technic_hv_solar_array_side.png", "technic_hv_solar_array_side.png", "technic_hv_solar_array_side.png"},
+	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2},
+	sounds = default.node_sound_wood_defaults(),
+    	description="HV Solar Array",
+	active = false,
+	technic_hv_power_machine=1,
+	internal_EU_buffer=0;
+	internal_EU_buffer_size=3000;
+	drawtype = "nodebox",
+	paramtype = "light",
+	is_ground_content = true,	
+	node_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		},
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		},
+	on_construct = function(pos)
+		local meta = minetest.env:get_meta(pos)
+		meta:set_float("technic_hv_power_machine", 1)
+		meta:set_float("internal_EU_buffer", 0)
+		meta:set_float("internal_EU_buffer_size", 3000)
+
+		meta:set_string("infotext", "HV Solar Array")
+		meta:set_float("active", false)
+	end,
+})
+
+minetest.register_craft({
+	output = 'technic:solar_array_hv 1',
+	recipe = {
+		{'technic:solar_array_mv', 'technic:solar_array_mv','technic:solar_array_mv'},
+		{'technic:solar_array_mv', 'technic:hv_transformer','technic:solar_array_mv'},
+		{'', 'technic:hv_cable',''},
+
+	}
+})
+
+minetest.register_abm(
+	{nodenames = {"technic:solar_array_hv"},
+	interval   = 1,
+	chance     = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		-- The action here is to make the solar array produce power
+		-- Power is dependent on the light level and the height above ground
+		-- 130m and above is optimal as it would be above cloud level.
+                -- Height gives 1/4 of the effect, light 3/4. Max. effect is 2880EU for the array.
+                -- 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 -10m
+		local pos1={}
+		pos1.y=pos.y+1
+		pos1.x=pos.x
+		pos1.z=pos.z
+
+		local light = minetest.env:get_node_light(pos1, nil)
+		local time_of_day = minetest.env:get_timeofday()
+		local meta = minetest.env:get_meta(pos)
+		if light == nil then light = 0 end
+		-- 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 > -10 then
+			local internal_EU_buffer      = meta:get_float("internal_EU_buffer")
+			local internal_EU_buffer_size = meta:get_float("internal_EU_buffer_size")
+			local charge_to_give          = math.floor(light*(light*9.6+pos1.y/130*48))
+			if charge_to_give<0   then charge_to_give=0 end
+			if charge_to_give>2880 then charge_to_give=2880 end
+			if internal_EU_buffer+charge_to_give>internal_EU_buffer_size then
+			   charge_to_give=internal_EU_buffer_size-internal_EU_buffer
+			end
+			meta:set_string("infotext", "Solar Array is active ("..charge_to_give.."EU)")
+			meta:set_float("active",1)
+			internal_EU_buffer=internal_EU_buffer+charge_to_give
+			meta:set_float("internal_EU_buffer",internal_EU_buffer)
+			
+		else
+			meta:set_string("infotext", "Solar Array is inactive");
+			meta:set_float("active",0)
+		end
+	end,
+}) 
+
+register_HV_machine ("technic:solar_array_hv","PR")

technic/solar_array_lv.lua

@@ -0,0 +1,94 @@
+-- The solar array is an assembly of panels into a powerful array
+-- The assembly can deliver more energy than the individual panel because
+-- of the transformer unit which converts the panel output variations into
+-- a stable supply.
+-- Solar arrays are not able to store large amounts of energy.
+-- The LV arrays are used to make medium voltage arrays.
+minetest.register_node("technic:solar_array_lv", {
+	tiles = {"technic_lv_solar_array_top.png", "technic_lv_solar_array_bottom.png", "technic_lv_solar_array_side.png",
+		"technic_lv_solar_array_side.png", "technic_lv_solar_array_side.png", "technic_lv_solar_array_side.png"},
+	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2},
+	sounds = default.node_sound_wood_defaults(),
+    	description="LV Solar Array",
+	active = false,
+	technic_power_machine=1,
+	internal_EU_buffer=0;
+	internal_EU_buffer_size=1000;
+	drawtype = "nodebox",
+	paramtype = "light",
+	is_ground_content = true,	
+	node_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		},
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		},
+	on_construct = function(pos)
+		local meta = minetest.env:get_meta(pos)
+		meta:set_float("technic_power_machine", 1)
+		meta:set_float("internal_EU_buffer", 0)
+		meta:set_float("internal_EU_buffer_size", 1000)
+
+		meta:set_string("infotext", "LV Solar Array")
+		meta:set_float("active", false)
+	end,
+})
+
+minetest.register_craft({
+	output = 'technic:solar_array_lv 1',
+	recipe = {
+		{'technic:solar_panel', 'technic:solar_panel',    'technic:solar_panel'},
+		{'technic:solar_panel', 'technic:lv_transformer', 'technic:solar_panel'},
+		{'default:steel_ingot', 'technic:lv_cable',       'default:steel_ingot'},
+
+	}
+})
+
+minetest.register_abm(
+	{nodenames = {"technic:solar_array_lv"},
+	interval   = 1,
+	chance     = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		-- The action here is to make the solar array produce power
+		-- Power is dependent on the light level and the height above ground
+		-- 130m and above is optimal as it would be above cloud level.
+                -- Height gives 1/4 of the effect, light 3/4. Max. effect is 160EU for the array.
+                -- 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 arrays do not work outside daylight hours or if
+                -- built below -10m
+		local pos1={}
+		pos1.y=pos.y+1
+		pos1.x=pos.x
+		pos1.z=pos.z
+
+		local light = minetest.env:get_node_light(pos1, nil)
+		local time_of_day = minetest.env:get_timeofday()
+		local meta = minetest.env:get_meta(pos)
+		if light == nil then light = 0 end
+		-- 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 > -10 then
+			local internal_EU_buffer      = meta:get_float("internal_EU_buffer")
+			local internal_EU_buffer_size = meta:get_float("internal_EU_buffer_size")
+			local charge_to_give          = math.floor(light*(light*0.5333+pos1.y/130*2.6667))
+			if charge_to_give<0   then charge_to_give=0 end
+			if charge_to_give>160 then charge_to_give=160 end
+			if internal_EU_buffer+charge_to_give>internal_EU_buffer_size then
+			   charge_to_give=internal_EU_buffer_size-internal_EU_buffer
+			end
+			meta:set_string("infotext", "Solar Array is active ("..charge_to_give.."EU)")
+			meta:set_float("active",1)
+			internal_EU_buffer=internal_EU_buffer+charge_to_give
+			meta:set_float("internal_EU_buffer",internal_EU_buffer)
+			
+		else
+			meta:set_string("infotext", "Solar Array is inactive");
+			meta:set_float("active",0)
+		end
+	end,
+}) 
+
+register_LV_machine ("technic:solar_array_lv","PR")

technic/solar_array_mv.lua

@@ -0,0 +1,94 @@
+-- The medium voltage solar array is an assembly of low voltage arrays.
+-- The assembly can deliver medium voltage levels and is a 10% less efficient
+-- compared to 5 individual low voltage arrays due to losses in the transformer.
+-- However medium voltage is supplied.
+-- Solar arrays are not able to store large amounts of energy.
+-- The MV arrays are used to make high voltage arrays.
+minetest.register_node("technic:solar_array_mv", {
+	tiles = {"technic_mv_solar_array_top.png", "technic_mv_solar_array_bottom.png", "technic_mv_solar_array_side.png",
+		 "technic_mv_solar_array_side.png", "technic_mv_solar_array_side.png", "technic_mv_solar_array_side.png"},
+	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2},
+	sounds = default.node_sound_wood_defaults(),
+    	description="MV Solar Array",
+	active = false,
+	technic_mv_power_machine=1,
+	internal_EU_buffer=0;
+	internal_EU_buffer_size=1000;
+	drawtype = "nodebox",
+	paramtype = "light",
+	is_ground_content = true,	
+	node_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		},
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
+		},
+	on_construct = function(pos)
+		local meta = minetest.env:get_meta(pos)
+		meta:set_float("technic_mv_power_machine", 1)
+		meta:set_float("internal_EU_buffer", 0)
+		meta:set_float("internal_EU_buffer_size", 1000)
+
+		meta:set_string("infotext", "MV Solar Array")
+		meta:set_float("active", false)
+	end,
+})
+
+minetest.register_craft({
+	output = 'technic:solar_array_mv 1',
+	recipe = {
+		{'technic:solar_array_lv', 'technic:solar_array_lv','technic:solar_array_lv'},
+		{'technic:solar_array_lv', 'technic:mv_transformer','technic:solar_array_lv'},
+		{'', 'technic:mv_cable',''},
+
+	}
+})
+
+minetest.register_abm(
+	{nodenames = {"technic:solar_array_mv"},
+	interval   = 1,
+	chance     = 1,
+	action = function(pos, node, active_object_count, active_object_count_wider)
+		-- The action here is to make the solar array produce power
+		-- Power is dependent on the light level and the height above ground
+		-- 130m and above is optimal as it would be above cloud level.
+                -- Height gives 1/4 of the effect, light 3/4. Max. effect is 720EU for the array.
+                -- 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 -10m
+		local pos1={}
+		pos1.y=pos.y+1
+		pos1.x=pos.x
+		pos1.z=pos.z
+
+		local light = minetest.env:get_node_light(pos1, nil)
+		local time_of_day = minetest.env:get_timeofday()
+		local meta = minetest.env:get_meta(pos)
+		if light == nil then light = 0 end
+		-- 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 > -10 then
+			local internal_EU_buffer      = meta:get_float("internal_EU_buffer")
+			local internal_EU_buffer_size = meta:get_float("internal_EU_buffer_size")
+			local charge_to_give          = math.floor(light*(light*2.4+pos1.y/130*12))
+			if charge_to_give<0   then charge_to_give=0 end
+			if charge_to_give>720 then charge_to_give=720 end
+			if internal_EU_buffer+charge_to_give>internal_EU_buffer_size then
+			   charge_to_give=internal_EU_buffer_size-internal_EU_buffer
+			end
+			meta:set_string("infotext", "Solar Array is active ("..charge_to_give.."EU)")
+			meta:set_float("active",1)
+			internal_EU_buffer=internal_EU_buffer+charge_to_give
+			meta:set_float("internal_EU_buffer",internal_EU_buffer)
+			
+		else
+			meta:set_string("infotext", "Solar Array is inactive");
+			meta:set_float("active",0)
+		end
+	end,
+}) 
+
+register_MV_machine ("technic:solar_array_mv","PR")

technic/solar_panel.lua

@@ -1,3 +1,6 @@
+-- Solar panels are the building blocks of LV solar arrays
+-- They can however also be used separately but with reduced efficiency due to the missing transformer.
+-- Individual panels are 20% less efficient than when the panels are combined into full arrays.
 minetest.register_node("technic:solar_panel", {
 	tiles = {"technic_solar_panel_top.png", "technic_solar_panel_bottom.png", "technic_solar_panel_side.png",
 		"technic_solar_panel_side.png", "technic_solar_panel_side.png", "technic_solar_panel_side.png"},
@@ -7,7 +10,7 @@ minetest.register_node("technic:solar_panel", {
 	active = false,
 	technic_power_machine=1,
 	internal_EU_buffer=0;
-	internal_EU_buffer_size=1000;
+	internal_EU_buffer_size=160;
 	drawtype = "nodebox",
 	paramtype = "light",
 	is_ground_content = true,	
@@ -23,7 +26,7 @@ minetest.register_node("technic:solar_panel", {
 		local meta = minetest.env:get_meta(pos)
 		meta:set_float("technic_power_machine", 1)
 		meta:set_float("internal_EU_buffer", 0)
-		meta:set_float("internal_EU_buffer_size", 1000)
+		meta:set_float("internal_EU_buffer_size", 160)
 
 		meta:set_string("infotext", "Solar Panel")
 		meta:set_float("active", false)
@@ -34,7 +37,7 @@ minetest.register_craft({
 	output = 'technic:solar_panel 1',
 	recipe = {
 		{'technic:doped_silicon_wafer', 'technic:doped_silicon_wafer','technic:doped_silicon_wafer'},
-		{'technic:doped_silicon_wafer', 'moreores:copper_ingot','technic:doped_silicon_wafer'},
+		{'technic:doped_silicon_wafer', 'technic:lv_cable',           'technic:doped_silicon_wafer'},
 		{'technic:doped_silicon_wafer', 'technic:doped_silicon_wafer','technic:doped_silicon_wafer'},
 
 	}
@@ -42,29 +45,39 @@ minetest.register_craft({
 
 minetest.register_abm(
 	{nodenames = {"technic:solar_panel"},
-	interval = 1,
-	chance = 1,
+	interval   = 1,
+	chance     = 1,
 	action = function(pos, node, active_object_count, active_object_count_wider)
-		
+		-- The action here is to make the solar panel prodice power
+		-- Power is dependent on the light level and the height above ground
+		-- 130m and above is optimal as it would be above cloud level.
+                -- Height gives 1/4 of the effect, light 3/4. Max. effect is 26EU.
+                -- 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 -10m
 		local pos1={}
 		pos1.y=pos.y+1
 		pos1.x=pos.x
 		pos1.z=pos.z
 
 		local light = minetest.env:get_node_light(pos1, nil)
+		local time_of_day = minetest.env:get_timeofday()
 		local meta = minetest.env:get_meta(pos)
 		if light == nil then light = 0 end
-		if light >= 12 then
-			meta:set_string("infotext", "Solar Panel is active ")
-			meta:set_float("active",1)
+		-- turn on panel only during day time and if sufficient light
+                -- I know this is counter intuitive when cheating by using other light sources underground.
+		if light >= 12 and time_of_day>=0.24 and time_of_day<=0.76 and pos.y > -10 then
 			local internal_EU_buffer=meta:get_float("internal_EU_buffer")
 			local internal_EU_buffer_size=meta:get_float("internal_EU_buffer_size")
-			local charge_to_give=40+(pos1.y/250*40) -- make solar energy depending on height
+			local charge_to_give=math.floor(light*(light*0.0867+pos1.y/130*0.4333))
 			if charge_to_give<0 then charge_to_give=0 end
-			if charge_to_give>160 then charge_to_give=160 end
+			if charge_to_give>26 then charge_to_give=26 end
 			if internal_EU_buffer+charge_to_give>internal_EU_buffer_size then
-			charge_to_give=internal_EU_buffer_size-internal_EU_buffer
+			   charge_to_give=internal_EU_buffer_size-internal_EU_buffer
 			end
+			meta:set_string("infotext", "Solar Panel is active ("..charge_to_give.."EU)")
+			meta:set_float("active",1)
 			internal_EU_buffer=internal_EU_buffer+charge_to_give
 			meta:set_float("internal_EU_buffer",internal_EU_buffer)
 			

technic/solar_panel_mv.lua

@@ -1,78 +0,0 @@
-minetest.register_node("technic:solar_panel_mv", {
-	tiles = {"technic_mv_solar_panel_top.png", "technic_mv_solar_panel_bottom.png", "technic_mv_solar_panel_side.png",
-		"technic_mv_solar_panel_side.png", "technic_mv_solar_panel_side.png", "technic_mv_solar_panel_side.png"},
-	groups = {snappy=2,choppy=2,oddly_breakable_by_hand=2},
-	sounds = default.node_sound_wood_defaults(),
-    	description="MV Solar Panel",
-	active = false,
-	technic_mv_power_machine=1,
-	internal_EU_buffer=0;
-	internal_EU_buffer_size=10000;
-	drawtype = "nodebox",
-	paramtype = "light",
-	is_ground_content = true,	
-	node_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
-		},
-		selection_box = {
-			type = "fixed",
-			fixed = {-0.5, -0.5, -0.5, 0.5, 0, 0.5},
-		},
-	on_construct = function(pos)
-		local meta = minetest.env:get_meta(pos)
-		meta:set_float("technic_mv_power_machine", 1)
-		meta:set_float("internal_EU_buffer", 0)
-		meta:set_float("internal_EU_buffer_size", 10000)
-
-		meta:set_string("infotext", "MV Solar Panel")
-		meta:set_float("active", false)
-	end,
-})
-
-minetest.register_craft({
-	output = 'technic:solar_panel_mv 1',
-	recipe = {
-		{'technic:solar_panel', 'technic:solar_panel','technic:solar_panel'},
-		{'technic:solar_panel', 'technic:mv_transformer','technic:solar_panel'},
-		{'', 'technic:mv_cable',''},
-
-	}
-})
-
-minetest.register_abm(
-	{nodenames = {"technic:solar_panel_mv"},
-	interval = 1,
-	chance = 1,
-	action = function(pos, node, active_object_count, active_object_count_wider)
-		
-		local pos1={}
-		pos1.y=pos.y+1
-		pos1.x=pos.x
-		pos1.z=pos.z
-
-		local light = minetest.env:get_node_light(pos1, nil)
-		local meta = minetest.env:get_meta(pos)
-		if light == nil then light = 0 end
-		if light >= 14 then
-			meta:set_string("infotext", "Solar Panel is active ")
-			meta:set_float("active",1)
-			local internal_EU_buffer=meta:get_float("internal_EU_buffer")
-			local internal_EU_buffer_size=meta:get_float("internal_EU_buffer_size")
-			local charge_to_give=300+(pos1.y/250*300) -- make solar energy depending on height
-			if charge_to_give<0 then charge_to_give=0 end
-			if charge_to_give>600 then charge_to_give=600 end
-			if internal_EU_buffer+charge_to_give>internal_EU_buffer_size then
-			charge_to_give=internal_EU_buffer_size-internal_EU_buffer
-			end
-			internal_EU_buffer=internal_EU_buffer+charge_to_give
-			meta:set_float("internal_EU_buffer",internal_EU_buffer)
-			
-		else
-			meta:set_string("infotext", "Solar Panel is inactive");
-			meta:set_float("active",0)
-		end
-	end,
-}) 
-
-register_MV_machine ("technic:solar_panel_mv","PR")