1

I am working in a demo game project in which, there is a tower that shot bullets and can rotate from -30 to +30 then +30 to -30 and continue this rotation forever. I am having problem with roatation. I am using Quaternion.Slerp to rotate it from -30 to 30 (rotating fine). But i am unable to make the reverse rotation from +30 to -30. Please help me how to do that reverse rotation. I am new to Unity. Thank you!
//Here is my code

using UnityEngine;
using System.Collections;

public class RotateTo : MonoBehaviour
{

    private Quaternion rotationFrom;
    private Quaternion rotationTo;

	void Start () {
	    

        rotationFrom = Quaternion.Euler(0.0f, -30, 0.0f);
        rotationTo = Quaternion.Euler(0.0f, 30, 0.0f);
        
	}
	// Update is called once per frame
	void Update ()
	{
        transform.rotation = Quaternion.Slerp(rotationFrom, rotationTo, 0.5f * Time.time);
	}
}
2

You’re close, you just need to flip flop the numbers when you reach your goal:

private Quaternion rotationFrom;
private Quaternion rotationTo;

float ellapsedTime = 0f;

void Start () {


	rotationFrom = Quaternion.Euler(0.0f, -30, 0.0f);
	rotationTo = Quaternion.Euler(0.0f, 30, 0.0f);

}
// Update is called once per frame
void Update ()
{
	ellapsedTime += Time.deltaTime;
	transform.rotation = Quaternion.Slerp(rotationFrom, rotationTo, 0.5f * ellapsedTime);

	//if we get within a 10th of a degree...
	if (Quaternion.Angle (transform.rotation, rotationTo) < .1f) 
	{
		//Start our time over
		ellapsedTime = 0f;

		//Flip flop our values
		Quaternion temp = rotationTo;
		rotationTo = rotationFrom;
		rotationFrom = temp;
	}
}