Trying to rotate a 2D sprite

Question

I've got this code attached to a 2D sprite that I want to rotate. So far I'm working on making it rotate left when the left arrow key is pressed. I get no parsing errors, but when I run the game, the code doesn't work. Any idea what I'm doing wrong?

 using UnityEngine;
 using System.Collections;
 
 public class Rotate : MonoBehaviour {
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
 
         if (Input.GetButtonDown ("left"))
             RotateLeft();
     }
 
     void RotateLeft () {
         Quaternion theRotation = transform.localRotation;
         theRotation.z *= 270;
         transform.localRotation = theRotation;
     }
 }

Answer 1

Best Answer

Answer by Eric5h5 · Nov 21, 2013 at 03:50 AM

 void RotateLeft () {
    transform.Rotate (Vector3.forward * -90);
 }

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anosmicAnimator · Nov 21, 2013 at 04:04 AM 0

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Looks like I have another problem now...

 UnityException: Input Button left is not setup.
  To change the input settings use: Edit -> Project Settings -> Input

prof · Nov 21, 2013 at 04:29 AM 0

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Input

Eric5h5 · Nov 21, 2013 at 04:31 AM 1

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Did you do what the error message says?

anosmicAnimator · Nov 21, 2013 at 04:38 AM 0

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Alright, it works now. Thanks for your help, everybody!

Yoman · Oct 13, 2014 at 02:37 PM 2

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Mark this answer as correct, then.

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Answer 2

Answer by epicpython · Sep 18, 2016 at 02:41 PM

Instead of subtracting 90 from the forward direction, you can use Vector3.forward and vector3.back:

 //rotate counterclockwise
 transform.Rotate (Vector3.forward);
 
 //rotate clockwise
 transform.Rotate (Vector3.back);

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Trying to rotate a 2D sprite

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