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Question by $$anonymous$$ · Mar 15, 2014 at 08:01 PM · physicsaddforcelookat

I need to add force based on the angle I'm looking at the object.

Here, I'm using Unity's add force script from the tutorial.


 using UnityEngine;
 using System.Collections;
 
 public class MoveBox : MonoBehaviour
 {
     public float pushForce = 1000;
     
     
     void OnMouseDown() {
         rigidbody.AddForce(-transform.forward * pushForce);
         rigidbody.useGravity = true;
     }
 }


No matter where I'm looking at the object, (in first-person) it only adds negative force along the z axis (the blue arrow). How can I change this, so it will add force forward from where I'm looking at it.

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Answer by fafase · Mar 15, 2014 at 08:07 PM

Try with:

 Vector3 direction = (transform.position + transform.forward) - transform.position;
 rigidbody.AddForce(direction * pushForce);

Note this is just doing:

 Vector3 direction = transform.TransformDirection(Vector3.forward);
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avatar image $$anonymous$$ · Mar 15, 2014 at 11:35 PM 0
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Hm... It did not work. This time it just pushes it the other way on the z axis, no matter where I am.

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