For empty levels, still get random bubbles to launch

main.lua

@@ -136,6 +136,9 @@ function love.load(arg)
     end
     game.bubble_type_counts[bubble_type] = game.bubble_type_counts[bubble_type] + 1
   end
+  if #bubble_types == 0 then
+    bubble_types = {1,2,3,4,5,6,7,8}
+  end
   game.next_bubble_index = 1
   game.next_bubble = {
     x = game.launcher_x,