Chainsaw: Partial rewrite, various improvements (#607)

SmallJoker

2022-10-25 7d39136764c894cb4adc3f0726f1df5eb6a4926b

 technic/machines/register/battery_box.lua

@@ -304,9 +304,9 @@
         drop = "technic:"..ltier.."_battery_box0",
         on_construct = function(pos)
            local meta = minetest.get_meta(pos)
            local EU_upgrade, tube_upgrade = 0, 0
            local EU_upgrade, _ = 0
            if data.upgrade then
               EU_upgrade, tube_upgrade = technic.handle_machine_upgrades(meta)
               EU_upgrade, _ = technic.handle_machine_upgrades(meta)
            end
            local max_charge = data.max_charge * (1 + EU_upgrade / 10)
            local charge = meta:get_int("internal_EU_charge")
@@ -345,9 +345,9 @@
               meta = minetest.get_meta(pos)
               if not pipeworks.may_configure(pos, sender) then return end
               fs_helpers.on_receive_fields(pos, fields)
               local EU_upgrade, tube_upgrade = 0, 0
               local EU_upgrade, _ = 0
               if data.upgrade then
                  EU_upgrade, tube_upgrade = technic.handle_machine_upgrades(meta)
                  EU_upgrade, _ = technic.handle_machine_upgrades(meta)
               end
               local max_charge = data.max_charge * (1 + EU_upgrade / 10)
               local charge = meta:get_int("internal_EU_charge")