Use appropriate item power exchange direction

machines/canning_machine.lua

@@ -37,7 +37,12 @@ industrialtest.internal.unpackTableInto(industrialtest.CanningMachine,{
 		"upgrades",
 		"powerStorage"
 	},
-	powerLists={"powerStorage"},
+	powerLists={
+		{
+			list="powerStorage",
+			direction="i"
+		}
+	},
 	active={
 		tiles={
 			"industrialtest_machine_block.png",
@@ -184,7 +189,6 @@ function industrialtest.CanningMachine.shouldDeactivate(self,pos)
 end
 
 function industrialtest.CanningMachine.afterDeactivation(self,pos)
-	minetest.debug("deactivated")
 	local meta=minetest.get_meta(pos)
 	local inv=meta:get_inventory()
 	local targetSlot=inv:get_stack("dst",1)

machines/electric_machine.lua

@@ -161,16 +161,31 @@ function industrialtest.ElectricMachine.powerExchange(self,pos)
 	if self.powerLists then
 		local inv=meta:get_inventory()
 		local powerFlow=meta:get_int("industrialtest.powerFlow")
-		for _,list in ipairs(self.powerLists) do
-			if meta:get_int("industrialtest.powerAmount")<=0 then
-				break
-			end
-			local slot=inv:get_stack(list,1)
-			if slot:get_count()>0 and not industrialtest.api.isFullyCharged(slot:get_meta()) then
-				industrialtest.api.transferPowerToItem(meta,slot,powerFlow)
-				inv:set_stack(list,1,slot)
-				self:updateFormspec(pos)
-				shouldRerunTimer=shouldRerunTimer or (not industrialtest.api.isFullyCharged(slot:get_meta()) and meta:get_int("industrialtest.powerAmount")>0)
+		for _,listDesc in ipairs(self.powerLists) do
+			local slot=inv:get_stack(listDesc.list,1)
+			if slot:get_count()>0 then
+				if listDesc.direction=="o" then
+					if meta:get_int("industrialtest.powerAmount")<=0 then
+						break
+					end
+					if not industrialtest.api.isFullyCharged(slot:get_meta()) then
+						industrialtest.api.transferPowerToItem(meta,slot,powerFlow)
+						inv:set_stack(listDesc.list,1,slot)
+						self:updateFormspec(pos)
+						shouldRerunTimer=shouldRerunTimer or (not industrialtest.api.isFullyCharged(slot:get_meta()) and meta:get_int("industrialtest.powerAmount")>0)
+					end
+				elseif listDesc.direction=="i" then
+					if industrialtest.api.isFullyCharged(meta) then
+						break
+					end
+					local slotMeta=slot:get_meta()
+					if slotMeta:get_int("industrialtest.powerAmount")>0 then
+						industrialtest.api.transferPowerFromItem(slot,meta,powerFlow)
+						inv:set_stack(listDesc.list,1,slot)
+						self:updateFormspec(pos)
+						shouldRerunTimer=shouldRerunTimer or (not industrialtest.api.isFullyCharged(meta) and slotMeta:get_int("industrialtest.powerAmount")>0)
+					end
+				end
 			end
 		end
 	end

machines/generator.lua

@@ -50,7 +50,12 @@ industrialtest.internal.unpackTableInto(industrialtest.Generator,{
 	flow=industrialtest.api.lvPowerFlow,
 	ioConfig="oooooo",
 	hasPowerOutput=true,
-	powerLists={"charged"}
+	powerLists={
+		{
+			list="charged",
+			direction="o"
+		}
+	}
 })
 
 function industrialtest.Generator.onConstruct(self,pos)