一些修复和优化

Assets/scripts/gamePlay_gameplay/groundParticularController.cs

@@ -60,6 +60,13 @@ public class groundParticularController : MonoBehaviour
     [SerializeField] private float speedMultiplier = 0.1f; 
     [Tooltip("发射速度倍增器")]
     [SerializeField] private float emissionSpeedMultiplier = 1f; 
+    [SerializeField] private float perFrameMoveMultiplier = 0.01f;
+
+    [Header("Rotation Randomness")]
+    [Tooltip("If enabled, each spawned particle gets a random initial rotation offset.")]
+    [SerializeField] private bool enableRandomRotation = false;
+    [Tooltip("Random initial rotation range in degrees. Each axis is offset from -range to +range.")]
+    [SerializeField] private float randomRotationRangeDegrees = 0f;
     
     [Tooltip("起点缩放抖动强度 (基于音频电平)")]
     [SerializeField] private float shakeIntensity = 0.1f;
@@ -214,7 +221,7 @@ public class groundParticularController : MonoBehaviour
             Random.Range(-spawnOffsetY, spawnOffsetY)
         );
         particle.transform.position = startPoint.TransformPoint(finalLocalPos);
-        particle.transform.rotation = startPoint.rotation;
+        particle.transform.rotation = GetSpawnRotation();
 
         // 5. 材质均衡选取逻辑
         MaterialConfig? selectedConfig = GetBalancedMaterialConfig();
@@ -251,6 +258,24 @@ public class groundParticularController : MonoBehaviour
     /// <summary>
     /// 轮询式均衡选取材质，确保每种材质数量大致相同
     /// </summary>
+
+    private Quaternion GetSpawnRotation()
+    {
+        if (!enableRandomRotation || randomRotationRangeDegrees <= 0f || startPoint == null)
+        {
+            return startPoint != null ? startPoint.rotation : Quaternion.identity;
+        }
+
+        float range = Mathf.Abs(randomRotationRangeDegrees);
+        Vector3 randomEuler = new Vector3(
+            Random.Range(-range, range),
+            Random.Range(-range, range),
+            Random.Range(-range, range)
+        );
+
+        return startPoint.rotation * Quaternion.Euler(randomEuler);
+    }
+
     private MaterialConfig? GetBalancedMaterialConfig()
     {
         if (particleMaterials == null || particleMaterials.Count == 0) return null;
@@ -301,13 +326,13 @@ public class groundParticularController : MonoBehaviour
             float noteSpawnerSpeedMultiplier = 1.0f;
             if (beatmapManager != null && beatmapManager.noteSpawner != null)
             {
-                noteSpawnerSpeedMultiplier = beatmapManager.noteSpawner.speedMultiplier;
+                noteSpawnerSpeedMultiplier = beatmapManager.noteSpawner.EffectiveSpeedMultiplier;
             }
 
             float effectiveBPM = Mathf.Max(currentBPM, 60f); 
             float noteSpeed = (totalDist * effectiveBPM * noteSpawnerSpeedMultiplier) / 240f;
             
-            float step = noteSpeed * speedMultiplier * emissionSpeedMultiplier * Time.deltaTime;
+            float step = noteSpeed * speedMultiplier * emissionSpeedMultiplier * perFrameMoveMultiplier * Time.deltaTime;
             if (step <= 0) step = 0.01f;
 
             traveledDist += step;