Fix NullReferenceException caused by aggressive collider destruction in Editor

Assets/Scripts/Interaction/PingClickHandler.cs

@@ -16,29 +16,27 @@ public class PingClickHandler : MonoBehaviour
         if (_modelRenderer == null) _modelRenderer = GetComponentInChildren<MeshRenderer>();
         foreach (var r in GetComponentsInChildren<Renderer>(true)) r.enabled = false;
         
-        // 彻底清掉旧的 Collider，重新添加一个绝对靠谱的 SphereCollider
-        var colliders = GetComponents<Collider>();
-        foreach(var c in colliders)
+        // 修复之前粗暴销毁导致的编辑器报错，改为安全地复用或添加 Collider
+        var col = GetComponent<Collider>();
+        if (col == null)
         {
-            Destroy(c);
+            col = gameObject.AddComponent<SphereCollider>();
         }
 
-        // 重新添加足够大、形状简单的球形碰撞器
-        var sphere = gameObject.AddComponent<SphereCollider>();
-        // 获取物体本身的渲染边界，如果没有则使用固定值
-        if (_modelRenderer != null)
+        if (col is SphereCollider sphere)
         {
-            // 通过 bounds 的大小来估算一个适合的半径
-            float maxDim = Mathf.Max(_modelRenderer.bounds.size.x, Mathf.Max(_modelRenderer.bounds.size.y, _modelRenderer.bounds.size.z));
+            float maxDim = 0.5f;
+            if (_modelRenderer != null) 
+                maxDim = Mathf.Max(_modelRenderer.bounds.size.x, Mathf.Max(_modelRenderer.bounds.size.y, _modelRenderer.bounds.size.z));
             sphere.radius = Mathf.Max(maxDim * 0.6f, 0.5f);
         }
-        else
+        else if (col is BoxCollider box)
         {
-            sphere.radius = 0.5f;
+            box.size = new Vector3(Mathf.Max(box.size.x, 0.8f), Mathf.Max(box.size.y, 0.8f), Mathf.Max(box.size.z, 0.8f));
         }
 
         // 强制碰撞体处于启用状态
-        sphere.enabled = true;
+        col.enabled = true;
 
         CreateOutlineMesh();
         _modelShown = false;
@@ -228,7 +226,6 @@ public class PingClickHandler : MonoBehaviour
     {
         _modelShown = false;
         
-        // 【关键修复点：重置状态时确保重新添加或修复 Collider】
         var col = GetComponent<Collider>();
         if (col == null)
         {