smooth

logic/pve/official_evaluator.py

@@ -30,6 +30,7 @@
 import argparse
 import importlib
 import json
+import math
 import os
 import sys
 from pathlib import Path
@@ -46,6 +47,11 @@
 from RLInterfaces import BaseAgent
 
 
+def _smooth_score(score: float, scale: float = 1000.0) -> float:
+    """Bounded score smoothing using tanh followed by sigmoid."""
+    z = math.tanh(score / scale)
+    return 1.0 / (1.0 + math.exp(-z))
+
 def load_agent(submission_dir: str, model_path: Optional[str], env: GameEnvironment) -> BaseAgent:
     """
     Dynamically load contestant's Agent class from submission_dir/agent.py.
@@ -123,7 +129,8 @@ def evaluate(
             action = agent.get_action(obs)
             obs, _reward, terminated, truncated, info = env.step(action)
             ep_len += 1
-            ep_score = info.get("score", 0.0)
+            raw_score = info.get("score", 0.0)
+            ep_score = _smooth_score(raw_score)
             done = terminated or truncated
 
         scores.append(ep_score)