add bdr/statistics parser

src/statistics.py

@@ -0,0 +1,61 @@
+import enum
+from typing import List, Tuple
+
+from hanabi import hanab_game
+
+
+class GameOutcome(enum.Enum):
+    win = 0
+    discard_crit = 1
+    bomb_crit = 2
+    strikeout = 3
+    bottom_deck = 4
+    vote_to_kill = 5
+    out_of_pace = 6
+
+
+class GameAnalysisResult:
+    def __init__(self, outcomes: List[GameOutcome], bdrs: List[Tuple[hanab_game.DeckCard, int]]):
+        self.outcome = GameOutcome
+        self.bdrs = bdrs
+
+
+def analyze_game(instance: hanab_game.HanabiInstance, actions: List[hanab_game.Action]) -> GameAnalysisResult:
+    # List of bdrs
+    bdrs = []
+    # This is the default value if we find no other reason why the game was lost (or won)
+    outcomes = []
+    game = hanab_game.GameState(instance)
+
+    def handle_lost_card(card, game, play: bool):
+        if not game.is_trash(card):
+            if game.is_critical(card):
+                outcomes.append(GameOutcome.bomb_crit if play else GameOutcome.discard_crit)
+            elif card.rank != 1:
+                if card in game.deck[game.progress:]:
+                    bdrs.append((card, game.draw_pile_size))
+            else:
+                if game.deck[game.progress:].count(card) == 2:
+                    bdrs.append((card, game.draw_pile_size))
+
+    for action in actions:
+        if action.type == hanab_game.ActionType.Discard:
+            discarded_card = instance.deck[action.target]
+            handle_lost_card(discarded_card, game, False)
+        if action.type == hanab_game.ActionType.Play:
+            played_card = instance.deck[action.target]
+            if not game.is_playable(played_card) and not game.is_trash(played_card):
+                bombed_card = instance.deck[action.target]
+                handle_lost_card(bombed_card, game, True)
+        game.make_action(action)
+        if game.pace < 0 and GameOutcome.out_of_pace not in outcomes:
+            outcomes.append(GameOutcome.out_of_pace)
+
+    if game.strikes == 3:
+        outcomes.append(GameOutcome.strikeout)
+    elif actions[-1].type in [hanab_game.ActionType.EndGame, hanab_game.ActionType.VoteTerminate]:
+        outcomes.append(GameOutcome.vote_to_kill)
+    if game.score == 5 * instance.num_suits:
+        outcomes.append(GameOutcome.win)
+
+    return GameAnalysisResult(outcomes, bdrs)