pydraughts, a draughts library in Python

[AttackingOrDefending]

Hello,

I have created a library for draughts in Python called pydraughts (https://github.com/AttackingOrDefending/pydraughts). It was originally created to create bots on lidraughts (https://lidraughts.org/player/bots). In June, I added a tournament manager which would allow for the automation of draughts tournaments. While I don't have that much free time at the moment, I was looking for some feedback on what I need to work on next.

Features:

• Variants:
  • International
    Russian
    Brazilian
    English/American
    Italian
    Turkish
    Frisian
    frysk!
    Antidraughts
    Breakthrough
  Engine protocols:
  • Hub
    DXP
    CheckerBoard
  PDN Reading and Writing
  Ballots
  Tournaments

[BertTuyt]

Thanks for sharing.

I have basically 2 questions , in your github example you have a tournament with 2 players, are more players also possible (and in that case) are engines switched on and off automatically.

And last but not least what we would like to see; a tournament with multiple engines which run an a local computer, but where the game in progress, games played so far, and tournament scores so far can be live seen on LiDraughts. So really automatically, so that one does not need to manually operate all constantly during the tournament.

Bert

[AttackingOrDefending]

You can tournaments with more than 2 engines. I have tested with up to 3 engines (scan dxp, kr hub, mobydam dxp) and it worked correctly. I couldn't find more engines to test it, but there shouldn't be any issue with more engines.

Lidraughts doesn't support user-created broadcasts and doesn't have an API for them, like lichess. I sent a message to RoepStoep requesting the addition of a broadcast API but I haven't gotten a reply yet. Playstrategy (https://playstrategy.org), which is also based on lichess, supports broadcasts and has draughts, so this is probably a better choice even though it's less popular.

[gwiesenekker]

Hi,

Thank you! At least for GWD (but I guess also for other engines) it is required it is launched from the directory they are installed in so they can find configuration files etc. By inspecting the source code this is supported for the HubEngine command through the 'cwd' argument:

from draughts.engine import HubEngine, Limit
engine=HubEngine(["C:/Tmp2/GWD7/x64/Release-AVX2/GWD7.exe", ""],cwd="C:/Tmp2/GWD7/x64/Release-AVX2")

But as far as I can see this is not supported for tournament play. I modified lines 60 of tournament.py as follows to launch the engine from the directory it is installed in:

#print(command, os.path.dirname(command[0]))
engine = HubEngine(command, cwd = os.path.dirname(command[0]))

I can then have play GWD against itself as:

from draughts.tournament import RoundRobin
player1 = (["C:/Tmp2/GWD7/x64/Release-AVX2/GWD7.exe", ""], "hub", {})
player2 = (["C:/Tmp2/GWD7/x64/Opponent/GWD7.exe", ""], "hub", {})
players = [player1, player2]
tournament = RoundRobin("tournament.pdn", players, start_time=20, increment=0.2, games_per_pair=4)
scores = tournament.play()
print(scores)

Could you also add 'cwd' support for tournament play?

Thanks,
GW

[AttackingOrDefending]

Hi,

I just released a new version with the change you requested. Let me know if you have any problems with it.