public static BPhysicsWorld Get()
 {
     if (singleton == null && !_isDisposed)
     {
         if (!Application.isPlaying)
         {
             return(null);
         }
         BPhysicsWorld[] ws = FindObjectsOfType <BPhysicsWorld>();
         if (ws.Length == 1)
         {
             singleton = ws[0];
         }
         else if (ws.Length == 0)
         {
             Debug.LogError("Need to add a dynamics world to the scene");
         }
         else
         {
             Debug.LogError("Found more than one dynamics world.");
             singleton = ws[0];
             for (int i = 1; i < ws.Length; i++)
             {
                 GameObject.Destroy(ws[i].gameObject);
             }
         }
         singleton._InitializePhysicsWorld();
     }
     //if (singleton.m_world == null && !singleton.isDisposed) singleton._InitializePhysicsWorld();
     return(singleton);
 }