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matchmaking.py
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matchmaking.py
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import random
import logging
from timer import Timer
logger = logging.getLogger(__name__)
class Matchmaking:
def __init__(self, li, config, user_profile):
self.li = li
self.variants = list(filter(lambda variant: variant != "fromPosition", config["challenge"]["variants"]))
self.matchmaking_cfg = config.get("matchmaking") or {}
self.user_profile = user_profile
self.last_challenge_created_delay = Timer(25) # The challenge expires 20 seconds after creating it.
self.last_game_ended_delay = Timer(max(self.matchmaking_cfg.get("challenge_timeout") or 30, 1) * 60)
self.last_user_profile_update_time = Timer(5 * 60) # 5 minutes
self.min_wait_time = 60 # Wait 60 seconds before creating a new challenge to avoid hitting the api rate limits.
self.challenge_id = None
self.block_list = []
def should_create_challenge(self):
matchmaking_enabled = self.matchmaking_cfg.get("allow_matchmaking")
time_has_passed = self.last_game_ended_delay.is_expired()
challenge_expired = self.last_challenge_created_delay.is_expired() and self.challenge_id
min_wait_time_passed = self.last_challenge_created_delay.time_since_reset() > self.min_wait_time
if challenge_expired:
self.li.cancel(self.challenge_id)
logger.debug(f"Challenge id {self.challenge_id} cancelled.")
self.challenge_id = None
return matchmaking_enabled and (time_has_passed or challenge_expired) and min_wait_time_passed
def create_challenge(self, username, base_time, increment, days, variant):
mode = self.matchmaking_cfg.get("challenge_mode") or "random"
if mode == "random":
mode = random.choice(["casual", "rated"])
rated = mode == "rated"
params = {"rated": rated, "variant": variant}
play_correspondence = []
if days:
play_correspondence.append(True)
if base_time or increment:
play_correspondence.append(False)
if random.choice(play_correspondence):
params["days"] = days
else:
params["clock.limit"] = base_time
params["clock.increment"] = increment
try:
response = self.li.challenge(username, params)
challenge_id = response.get("challenge", {}).get("id")
if not challenge_id:
logger.error(response)
self.add_to_block_list(username)
return challenge_id
except Exception:
logger.exception("Could not create challenge")
return None
def get_time(self, name, default=None):
match_time = self.matchmaking_cfg.get(name, default)
if match_time is None:
return None
if isinstance(match_time, int):
match_time = [match_time]
return random.choice(match_time)
def perf(self):
return self.user_profile["perfs"]
def username(self):
return self.user_profile["username"]
def update_user_profile(self):
if self.last_user_profile_update_time.is_expired():
self.last_user_profile_update_time.reset()
self.user_profile = self.li.get_profile()
def choose_opponent(self):
variant = self.matchmaking_cfg.get("challenge_variant") or "random"
if variant == "random":
variant = random.choice(self.variants)
base_time = self.get_time("challenge_initial_time", 60)
increment = self.get_time("challenge_increment", 2)
days = self.get_time("challenge_days")
game_type = game_category(variant, base_time, increment, days)
min_rating = self.matchmaking_cfg.get("opponent_min_rating") or 600
max_rating = self.matchmaking_cfg.get("opponent_max_rating") or 4000
rating_diff = self.matchmaking_cfg.get("opponent_rating_difference")
if rating_diff is not None:
bot_rating = self.perf().get(game_type, {}).get("rating", 0)
min_rating = bot_rating - rating_diff
max_rating = bot_rating + rating_diff
logger.info(f"Seeking {game_type} game with opponent rating in [{min_rating}, {max_rating}] ...")
allow_tos_violation = self.matchmaking_cfg.get("opponent_allow_tos_violation", True)
def is_suitable_opponent(bot):
perf = bot.get("perfs", {}).get(game_type, {})
return (bot["username"] != self.username()
and bot["username"] not in self.block_list
and not bot.get("disabled")
and (allow_tos_violation or not bot.get("tosViolation")) # Terms of Service
and perf.get("games", 0) > 0
and min_rating <= perf.get("rating", 0) <= max_rating)
online_bots = self.li.get_online_bots()
online_bots = list(filter(is_suitable_opponent, online_bots))
try:
bot_username = None
bot = random.choice(online_bots)
bot_profile = self.li.get_public_data(bot["username"])
if bot_profile.get("blocking"):
self.add_to_block_list(bot["username"])
else:
bot_username = bot["username"]
except Exception:
if online_bots:
logger.exception("Error:")
else:
logger.error("No suitable bots found to challenge.")
return bot_username, base_time, increment, days, variant
def challenge(self):
self.update_user_profile()
bot_username, base_time, increment, days, variant = self.choose_opponent()
logger.info(f"Will challenge {bot_username} for a {variant} game.")
challenge_id = self.create_challenge(bot_username, base_time, increment, days, variant) if bot_username else None
logger.info(f"Challenge id is {challenge_id}.")
self.last_challenge_created_delay.reset()
self.challenge_id = challenge_id
def add_to_block_list(self, username):
logger.info(f"Will not challenge {username} again during this session.")
self.block_list.append(username)
def game_category(variant, base_time, increment, days):
game_duration = base_time + increment * 40
if variant != "standard":
return variant
elif days:
return "correspondence"
elif game_duration < 179:
return "bullet"
elif game_duration < 479:
return "blitz"
elif game_duration < 1499:
return "rapid"
else:
return "classical"