module Worker
  # Called by jobmanager
  def assign_task(id, action, target, location)
    @task_id = id
    ...

    # Call the worker's movement/action code
    # To join these, we can specify a block to be executed after the movement
    #  is completed, which in this case would be the action code or nil if it's
    #  just a movement
  end

  # Called internally by the worker
  def done_with_job
    # Call into jobmanager, telling it you're done with @task_id

    @task_id = nil
  end