Refactor electric chainsaws

tools/electric_tool.lua

@@ -19,11 +19,20 @@ industrialtest.internal.unpackTableInto(industrialtest.ElectricTool,{
 	prepare=industrialtest.ElectricItem.prepare
 })
 
+function industrialtest.ElectricTool.createDefinitionTable(self)
+	local def=industrialtest.Tool.createDefinitionTable(self)
+	def.after_use=function()
+		-- Hack to make sure that chainsaw won't be destroyed when has 0 EU
+		return nil
+	end
+	return def
+end
+
 function industrialtest.ElectricTool.onPlace(self,itemstack,user,pointed)
 	self:prepare(itemstack)
 
 	local meta=itemstack:get_meta()
-	local opPower=self:getOpPower()
+	local opPower=self:getOpPower(itemstack)
 	if meta:get_int("industrialtest.powerAmount")<opPower then
 		return false
 	end