new events is now always valid to append to

also "vore" now resets the eaten list

updatedshmup.p8

@@ -66,12 +66,13 @@ end
 
 -- vore eats another linked list
 -- by appending its contents.
--- the ingested linked
--- list is no longer valid.
+-- the ingested linked is empty.
 function linked_list:vore(x)
  if (not x.next) return
  self.tail.next = x.next
  self.tail = x.tail
+ x.next = nil
+ x.tail = x
 end
 
 -- strip calls f(x) for each
@@ -153,6 +154,7 @@ function wipe_level()
  intangibles_fg = linked_list.new()
  intangibles_bg = linked_list.new()
  events = linked_list.new()
+ new_events = linked_list.new()
 end
 
 function _update60()
@@ -169,9 +171,8 @@ end
 
 function updategame()
  leveldone = level_frame()
-	new_events = linked_list.new()
- events:strip(call_move)
  events:vore(new_events)
+ events:strip(call_move)
  for _, lst in ipairs{intangibles_bg, pships, eships, pbullets, ebullets} do
   lst:strip(call_move)
  end