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Question by ElectrikVocal095 · Jul 06, 2018 at 03:11 AM · c#unity 5rigidbody2daddforcelookat

How to make that a GameObject look with a Look At() in the opposite direction to the force exerted on it?

For example, if you increase in the "X and Y axes" that you look at a side opposite to that assigned force

It is to make an oblique 2D shot for a game like the one in the image

alt text

mmx4-z-rakuhouha2-ss.png (13.2 kB)
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Answer by Sabre-Runner · Jul 07, 2018 at 05:30 AM

If you have the force vector and/or you have the direction of movement as a vector X, you can use them to determine the direction in which you want to look. Then use Quaternion.SetFromToRotation to create a rotation from your current look vector to the desired one. Then apply it to your object's rotation quaternion.

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Answer by ElectrikVocal095 · Jul 07, 2018 at 08:24 AM

Thanks you for answering! Finally I designed this C# script, and then playing with the variables I could give that attack effect.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class LookAtForce : MonoBehaviour 
 {
     Rigidbody2D rb;
     public float forceInX, forceInY;
     public int RotateDegree;
 
     void Start () 
     {
         rb = GetComponent<Rigidbody2D> ();
         transform.Rotate (new Vector3(0,0,-RotateDegree));
     }
 
     void Update () 
     {
         rb.AddForce (new Vector2(forceInX,forceInY), ForceMode2D.Impulse);
     }
 }

But I still do not know how to rotate a GameObject depending of the direction of this :(

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avatar image Sabre-Runner · Jul 09, 2018 at 05:01 AM 0
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If you already know the force exactly (If it's not physics based) then just take the reverse vector to that and do a SetFromToRotation from the force vector to its opposite.

avatar image ElectrikVocal095 Sabre-Runner · Jul 15, 2018 at 10:53 PM 0
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Thanks again!

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