OK, I’ve been playing around with Ruby’s YAML library, and have confirmed that I need to take Procs out of Zyps. YAML has no problem serializing a Proc, but the moment it tries to load it again, I’m hit with:

Error: allocator undefined for Proc

This is probably why things blew up when I experimented with setting up a server with DRb (which I believe sends YAML over the wire). Everything was fine until I created a creature with a Behavior. Never got a real error from that, though; it just locked up.

:::sigh::: Too bad, Procs are such a cool idea… I should probably be blaming the YAML and DRb libraries instead, but I need them more than I need Procs.

- !ruby/object:Creature
  behaviors:
  - !ruby/object:Demo::Eat
    actions: []

    conditions: []

    environment: *id001
  birth_time: 1187737093.55
  color: !ruby/object:Color
    blue: 0
    green: 1
    red: 0
  identifier: 40776432
  location: !ruby/object:Location
    x: 0
    y: 150
  name:
  size: 157.0
  tags: []

  vector: !ruby/object:Vector
    pitch: 0.0
    speed: 10