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Hanabi

Robert B. Kaspar, [email protected]

Usage

usage: ./hanabi_wrapper.py p1 p2 [p3 ...] [-t game_type] [-n n_rounds] [-v verbosity] [-l loss_score]
  pi (AI for player i): cheater, basic, brainbow, newest, or human
  game_type: rainbow [default], purple, or vanilla
  n_rounds: positive int [default: 1]
  verbosity: verbose [default], scores, silent, or log
  loss_score (points to award after 3 guesses): zero [default] or full

There is no max number of players. With more than 5, the hand size is still 4 cards.

Example usage

$ ./hanabi_wrapper.py newest newest newest newest

or

$ ./hanabi_wrapper.py cheater cheater -t purple -n 1000 -v silent

Example output

ROUND 0:
[HANDS] Newest1: 1g 1? 2g 4?
        Newest2: 3g 3b 1b 4b
        Newest3: 3y 2r 3w 4r
        Newest4: 3r 4r 5y 1r
[PLAYS] Newest1 [1g 1? 2g 4?] hints 1 to Newest2
        Newest2 [3g 3b 1b 4b] plays 1b and draws 1g
        Newest3 [3y 2r 3w 4r] hints 1 to Newest4
        Newest4 [3r 4r 5y 1r] plays 1r and draws 3r
        ...
        Newest1 [4y 4b 2w 1?] plays 4b and draws 1g
        Newest2 [1r 2y 4y 1?] discards 1r and draws 1w
        Newest3 [5? 1b 1y 3y] hints 5 to Newest4
        Newest4 [1b 5b 4g 2?] plays 5b
        Newest1 [4y 2w 1? 1g] hints 3 to Newest3
        Newest2 [2y 4y 1? 1w] discards 2y
Score: 25

or

AVERAGE SCORE (+/- 1 std. err.): 23.54 +/- 0.09

Available players

  • Cheating Idiot (cheater) by RK
    Peeks at own hand to know when to play, discards randomly, never hints
  • Most Basic (basic) by Ben Zax
    Plays when certain, discards randomly, hints inefficiently, no rainbows
  • Basic Rainbow (brainbow) by Greg Hutchings
    Like basic but checks direct and indirect info to handle rainbows
  • Newest Card (newest) by BZ
    Plays newest hinted card (and hints accordingly), discards oldest card
  • Human (human) by GH
    Allows you to play alongside the AIs (works best on -v silent or log)

How to write your own AI player

Use an existing player as a guide. CheatingIdiot is especially simple.

Just make a player class with a play method whose only argument is a Round instance. (Round stores all of the game information for a single round.)

play must return a two-tuple. The 1st entry tells the framework what kind of action your player is taking: 'hint', 'play', or 'discard'. The 2nd entry specifies the action's target. For a play or discard, that's just which card to use. For a hint, it's another two-tuple: the target player (int between 0 and nPlayers - 1) and the info to give (a one-char str representing a color or number). See Round.get_play() in hanabi_classes.py for more info.

You'll want to use the information available to you from other players' hands, the tableau, the discard pile, and how many hints are left to inform your AI's choices. This info is available in the Round object; see especially Round.__init__(). Note that player hands are stored as sub-objects of Round. For example, in Round instance r a list of player i's cards is available as r.h[i].cards. (Don't look at your own cards unless you're despicable like CheatingIdiot! ... You make me sick.)

After you write your player class, add a couple lines to hanabi_wrapper.py so the framework can detect it. The sections you need to edit are marked TODO:.