Instant Transform.Rotate?

Question

I want to make a light switch, and want to use transform.rotate to make the button turn from 14,0,0 to -14,0,0 and vice versa, but my script keeps bringing up the following errors:

Assets/LightSwitchRotation.cs(8,23): error CS0131: The left-hand side of an assignment must be a variable, a property or an indexer

Assets/LightSwitchRotation.cs(11,28): error CS0131: The left-hand side of an assignment must be a variable, a property or an indexer

This is my script:

 using UnityEngine;
 using System.Collections;
 
 public class LightSwitchRotation : MonoBehaviour {
 
 private void OnMouseDown()
 {
     if (transform.Rotate = (new Vector3(-14,0,0)))
         {transform.Rotate(new Vector3(14,0,0));}
         
     else if (transform.Rotate = (new Vector3(14,0,0)))
     {transform.Rotate(new Vector3(-14,0,0));}
 }
 }

Answer 1

Your comparisons are incorrect.

First you need to use == instead of = in an if statement. A single equal sign will assign a value to something; double equal signs compare if two things are the same. This is what your error is actually referring to, because the compiler sees transform.Rotate = new Vector3(-14,0,0) and it says "Oh, you are trying to assign a vector to a function, that's not good!"

Second, transform.Rotate is a function that is used to rotate an object by some amount, so it doesn't make sense to use it in the comparison statements. Instead, you probably want transform.rotation.eulerAngles or transform.eulerAngles . Both do the same thing.

Therefore, you code should look like this:

 private void OnMouseDown()
 {
     if (transform.eulerAngles == new Vector3(-14,0,0))
     {
         transform.Rotate(new Vector3(14,0,0));
     }
     else if (transform.eulerAngles == new Vector3(14,0,0))
     {
         transform.Rotate(new Vector3(-14,0,0));        
     }
 }

You could also just check to see if transform.eulerAngles.x == -14 instead

Instant Transform.Rotate?

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