Having issue with moving child up y -axis

Ok what I am attempting to do and to some extent succeeded is to have an object on a plane turn into the child of the player object. Which I have done. I am wanting the child to now rotate around the player object up the y-axis to be destroyed at a certain point. I can get the child object to rotate however I have had no luck in making it go up.

Any help would be great.

Thanks.

Code (CSharp):

1. {
2.    
3.     public Transform a;
4.     public Transform b;
5.    
6.     void OnCollisionenter(Collider other)
7.        
8.     {
9.        
10.         if (other.gameObject.tag == "c")
11.            
12.         {
13.            
14.             other.transform.parent = transform;
15.                        
16.         }
17.         b.transform.RotateAround (a.transform.position, Vector3.up, 365 * Time.deltaTime);
18.          }
19. }

 

You are probably going to want to use a coroutine to do the entire effect.

Review the StartCoroutine() method and then you would rotate and lift the child object's transform.localPosition value over a period of time, then (for example) destroy (or hide) it.