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Assets/_Game/Scripts/Camera/CameraFallBiasExtension.cs

@@ -15,7 +15,7 @@ namespace BaseGames.Camera
     /// <list type="number">
     ///   <item><see cref="CameraAsymmetricDampingExtension"/> — 先对 Y 轴做非对称阻尼平滑；</item>
     ///   <item><b>本扩展（CameraFallBiasExtension）</b> — 将偏置叠加到平滑后的 Y 上；</item>
-    ///   <item><c>CinemachineConfiner2D</c> — 最后将偏置后的位置裁剪回限位边界内。</item>
+    ///   <item><c>CinemachineConfiner3D</c> — 最后将偏置后的位置裁剪回限位边界内。</item>
     /// </list>
     /// <para>如果顺序错误（本扩展在 Confiner 之后），偏置会导致相机超出限位边界且不被修正。</para>
     /// </summary>
@@ -98,10 +98,10 @@ namespace BaseGames.Camera
                 return;
             }
 
-            // ── 估算玩家 Y 轴速度（负值 = 下落）────────────────────────────
+            // ── 估算玩家 Y 轴速度（帧率无关指数平滑）─────────────────────
             float rawVY    = (follow.position.y - _lastFollowY) / deltaTime;
             _lastFollowY   = follow.position.y;
-            _smoothedVY    = Mathf.Lerp(_smoothedVY, rawVY, deltaTime * 10f);
+            _smoothedVY    = Mathf.Lerp(_smoothedVY, rawVY, 1f - Mathf.Exp(-deltaTime * 10f));
 
             bool isFalling = _smoothedVY < -_fallSpeedThreshold;
 
@@ -115,7 +115,7 @@ namespace BaseGames.Camera
             // 超过 activationDelay 后线性增加偏置；0.4s 达到最大
             float effectiveMax = _configuredMaxShift >= 0f ? _configuredMaxShift : _maxShift;
             float ratio        = Mathf.Clamp01((_fallTimer - _activationDelay) / 0.4f);
-            float targetShift  = -effectiveMax * ratio;                        // 负就：相机向下
+            float targetShift  = -effectiveMax * ratio;                        // 负值：相机向下
 
             // 使用指数衰减公式（帧率无关）替代 Lerp*deltaTime
             float dampingTime = targetShift < _currentShift