jbe/bsw@0: --[[--
poelzi@34: slot.reset_all{
poelzi@34:   except       =  except, -- Reset all slots, except slots named in this list
poelzi@34: }
jbe/bsw@0: 
jbe/bsw@0: Calling this function resets all slots to be empty.
jbe/bsw@0: 
jbe/bsw@0: --]]--
jbe/bsw@0: 
poelzi@34: function slot.reset_all(args)
poelzi@34:   local saved = {}
poelzi@34:   if args and args.except then
poelzi@34:     for i,key in ipairs(args.except) do
poelzi@34:       saved[key] = slot._data[key]
poelzi@34:     end
poelzi@34:   end
jbe/bsw@0:   slot._data = setmetatable({}, slot._data_metatable)
poelzi@34:   if saved then
poelzi@34:     for key,value in pairs(saved) do
poelzi@34:       slot._data[key] = value
poelzi@34:     end
poelzi@34:   end
jbe/bsw@0: end