Rotation being forced away from what I want

Question

So I have a script for character movement. I have a script that forces the character to face the direction of movement. Problem is for my character, I need the rotation to be X: 90, Y, 180.

Here is my script. It works fine for what I want to do above, but it forces the X and Y rotation to 0. How do I fix this?

     private GameObject parent;
     private Vector3 dir;
     
     void Start(){
         parent = transform.parent.gameObject; //The object uses its parent's velocity
     }
     
     void Update () {
         Vector2 dir = transform.parent.rigidbody2D.velocity;
         float angle = Mathf.Atan2(-dir.y, -dir.x) * Mathf.Rad2Deg; 
         transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
     }
 }

Answer 1

Best Answer

Answer by Scribe · Apr 19, 2016 at 09:30 AM

Option 1 (easy option): set your object to the child of something else, and then rotate the parent around the z direction.

Option 2: Save your desired rotation in a variable and apply your rotation around z as an additional rotation.

Quaternion initialRot;

 void Start(){
     initialRot = this.transform.rotation; //or possibly Quaternion.Euler(blah blah)
 }
 
 void Update(){
     transform.rotation = initialRot*Quaternion.AngleAxis...;
 }

It is possible that for this, you may need to convert Vector3.forward into local space before rotating around it, see Transform.InverseTransformDirection.

0 Show 1 · Share

EmpI · Apr 20, 2016 at 06:29 PM 0

Share

I ended up using both options as it was the only way Unity would allow it to work. I parented it to an object with an X-Y rotation of 90-180 and used initialRot as suggested to get it to work. Still had to monkey around with (-dir.y, -dir.x) part and had to change the Vector3 to Up, but it works now. Thank you!

Rotation being forced away from what I want

1 Reply

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions