Recursive Rigidbody Method

Question

,Hi guys. Wrote a method which find highest gameObject parent with Rigidbody.

 public Rigidbody RecursiveReturnRigidbodyParent(GameObject gameObjectGrabed)
 {
     while (gameObjectGrabed.GetComponentInParent<Rigidbody>())
     {
         gameObjectGrabed = gameObjectGrabed.transform.parent.gameObject;
     }
     return gameObjectGrabed.GetComponent<Rigidbody>();
 }

Aaand thats the problem:

NullReferenceException: Object reference not set to an instance of an object

Im grabbing object using raycast. If the object contains rigidbody then it search further if any of the parent object have rigidbody.

Answer 1

Answer by Cornelis-de-Jager · Mar 25, 2019 at 09:51 PM

Because you are getting a GameObject that might have no rigidbody and you are returning that.

 public Rigidbody RecursiveReturnRigidbodyParent(GameObject gameObjectGrabed)
 {
     // Ensure the current object has a rigidBody
     if(gameObjectGrabed.GetComponentInParent<Rigidbody>() == null)
         return null;
     
     var currObject = gameObjectGrabed.GetComponentInParent<Rigidbody>() ;
     
     while (gameObjectGrabed.GetComponentInParent<Rigidbody>() != null)
     {    
         currObject = gameObjectGrabed.GetComponentInParent<Rigidbody>();
         gameObjectGrabed = gameObjectGrabed.transform.parent.gameObject;
     }
     return currObject;
 }

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wysepkawyspa · Mar 26, 2019 at 04:45 AM 0

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Thanks Sir but thats still the problem, the same as before. Is it working for you ?

Recursive Rigidbody Method

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