Make unconnected generators burn the fuel they still have.

technic/machines/HV/nuclear_reactor.lua

@@ -236,7 +236,29 @@ minetest.register_node("technic:hv_nuclear_reactor_core_active", {
 	allow_metadata_inventory_take = technic.machine_inventory_take,
 	allow_metadata_inventory_move = technic.machine_inventory_move,
 	technic_run = run,
-	technic_disabled_machine_name = "technic:hv_nuclear_reactor_core",
+	technic_on_disable = function(pos, node)
+		local timer = minetest.get_node_timer(pos)
+        	timer:start(1)
+        end,
+	on_timer = function(pos, node)
+		local meta = minetest.get_meta(pos)
+		
+		-- Connected back?
+		if meta:get_int("HV_EU_timeout") > 0 then return end	
+		
+		local burn_time = meta:get_int("burn_time") or 0
+
+		if burn_time >= burn_ticks or burn_time == 0 then
+			meta:set_int("HV_EU_supply", 0)
+			meta:set_int("burn_time", 0)
+			technic.swap_node(pos, "technic:hv_nuclear_reactor_core")
+			return
+		end
+		
+		meta:set_int("burn_time", burn_time + 1)
+		local timer = minetest.get_node_timer(pos)
+        	timer:start(1)
+	end,
 })
 
 technic.register_machine("HV", "technic:hv_nuclear_reactor_core",        technic.producer)

technic/machines/register/generator.lua

@@ -126,7 +126,40 @@ function technic.register_generator(data)
 		allow_metadata_inventory_take = technic.machine_inventory_take,
 		allow_metadata_inventory_move = technic.machine_inventory_move,
 		technic_run = run,
-		technic_disabled_machine_name = "technic:"..ltier.."_generator",
+		technic_on_disable = function(pos, node)
+			local timer = minetest.get_node_timer(pos)
+        		timer:start(1)
+        	end,
+		on_timer = function(pos, node)
+			local meta = minetest.get_meta(pos)
+			
+			-- Connected back?
+			if meta:get_int(tier.."_EU_timeout") > 0 then return end
+			
+			local burn_time = meta:get_int("burn_time") or 0
+
+			if burn_time <= 0 then
+				meta:set_int(tier.."_EU_supply", 0)
+				meta:set_int("burn_time", 0)
+				technic.swap_node(pos, "technic:"..ltier.."_generator")
+				return
+			end
+
+			local burn_totaltime = meta:get_int("burn_totaltime") or 0
+			if burn_totaltime == 0 then burn_totaltime = 1 end
+			burn_time = burn_time - 1
+			meta:set_int("burn_time", burn_time)
+			local percent = math.floor(burn_time / burn_totaltime * 100)
+			meta:set_string("formspec", 
+				"size[8, 9]"..
+				"label[0, 0;"..minetest.formspec_escape(desc).."]"..
+				"list[current_name;src;3, 1;1, 1;]"..
+				"image[4, 1;1, 1;default_furnace_fire_bg.png^[lowpart:"..
+				(percent)..":default_furnace_fire_fg.png]"..
+				"list[current_player;main;0, 5;8, 4;]")
+			local timer = minetest.get_node_timer(pos)
+	        	timer:start(1)
+		end,
 	})
 
 	technic.register_machine(tier, "technic:"..ltier.."_generator",        technic.producer)

technic/machines/switching_station.lua

@@ -359,9 +359,10 @@ minetest.register_abm({
 			if machines[node.name] and switching_station_timeout_count(pos, tier) then
 				local nodedef = minetest.registered_nodes[node.name]
 				if nodedef and nodedef.technic_disabled_machine_name then
-					print(nodedef.technic_disabled_machine_name)
 					node.name = nodedef.technic_disabled_machine_name
 					minetest.swap_node(pos, node)
+				elseif nodedef and nodedef.technic_on_disable then
+					nodedef.technic_on_disable(pos, node)
 				end
 				if nodedef then
 					local meta = minetest.get_meta(pos)