docs: def run_simulation(c1, c2):
      """
      using character and planet, run the simulation
      """
      print('running simulation...')
      traits = character.CharacterCollection(character.fldr)
      c1 = traits.generate_random_character()
      c2 = traits.generate_random_character()
      print(c1)
      print(c2)
      rules = battle.BattleRules(battle.rules_file)
      b = battle.Battle(c1, c2, traits, rules, print_console='Yes')
      print(b.status)