Float over the ground

I try to float a rigidbody object in a distance of ground, with Raycast + "AddForce" or "MovePosition" but It's not working well,

Code (CSharp):

1.  
2.     public float Distancevalue;
3.     public LayerMask Mymask;
4.  
5.     void FixedUpdate()
6.     {
7.         if (Physics.Raycast(transform.position, Vector3.down, Distancevalue))
8.         {
9.             RaycastHit hitInfo;
10.             Physics.Raycast(transform.position, Vector3.down, out hitInfo, Distancevalue, Mymask.value);
11.             float correction = Distancevalue - hitInfo.distance;
12.  
13.          //   transform.position = new Vector3(transform.position.x, transform.position.y + correction, transform.position.z);
14.          //   GetComponent<Rigidbody>().AddForce(transform.position.x, transform.position.y + correction, transform.position.z);
15.             GetComponent<Rigidbody>().MovePosition(new Vector3(transform.position.x, transform.position.y + correction, transform.position.z));
16.  
17.         }
18.     }

is there something wrong ?

thanks

 

You might need to set the rigidbody "Is kinematic" when the object needs to hover and put it back once it no longer needs to hover.

Code (CSharp):

1.     private Rigidbody rigidBody;
2.  
3.     private void Start()
4.     {
5.         rigidBody = GetComponent<Rigidbody>();
6.     }
7.  
8.     private void FixedUpdate()
9.     {
10.         rigidBody.isKinematic = true;
11.     }

Code (CSharp):

1.     private Rigidbody rigidBody;
2.  
3.     private void Start()
4.     {
5.         rigidBody = GetComponent<Rigidbody>();
6.     }
7.  
8.     private void FixedUpdate()
9.     {
10.         rigidBody.isKinematic = false;
11.     }

 

I need the rigidbody object to float all the time with a specific distance to the ground, but I need to mask some objects on the ground to just fly over them and keep the object distance to the ground.
did you mean, I should make "isKinematic = false" once the rigidbody detect an object on the bottom?