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Question by lemiwinks · Sep 10, 2013 at 01:19 PM · sphere

How do i make empty/cube follow a sphere?

hi, i have a game that involves a moving ball, and for some special effects to work i need an empty or a cube to follow the ball without rotating. ive tried a few ways, when i use a rigid body on the cube, it falls through the floor. ive tried small scripts to lock rotation on the cube however that causes my ball to roll in strange ways. any help would be great

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Answer by AlfredDuler · Sep 10, 2013 at 01:56 PM

Atach this script to your empty GameObject or Cube. In the inspector, drag and drop your sphere gameobject in the script.

If there is a Box Collider on the cube, be sure to check "IsTrigger" and if there is a rigidbody, be sure to UNCHECK "Use Gravity" and check "Is Kinematic"

 var mySphere : GameObject;

 function Update()
 {

       gameObject.transform.position = mySphere.transform.position;

 }
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avatar image lemiwinks · Sep 10, 2013 at 02:13 PM 0
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This worked great for me, i also found out the cube objects i had following my ball had a collision effect causing the strange movement

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Answer by Superwayne · Sep 10, 2013 at 02:04 PM

Couldn't you just make it a child object of the sphere? If a empty object with a rigidbody (no gravite and is kinematic) results in strange behaviour you could attach a script to the empty object:

 void Update()
 {
  
 transform.rotation = new Quaternion(-transform.parent.rotation.x, - transform.parent.rotation.y, -transform.parent.rotation.z);
  
 }

I don't know if transform.rotation = -transform.parent.rotation; would also work..

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