How to slowly rotate a gameObject from 0 to -90 and then from -90 to 0 every 5 seconds?

Unity Engine
,
1

Hi! I have this object in my game and I want it to rotate every 5 seconds, opening and closing the street. In order to do that, I need it to rotate in the X axis from 0 degrees (closed) to -90 degrees (open), waiting 5 seconds and then rotating again, this time from -90 to 0 degrees, repeating that cycle.

Currently this is the code I’m using:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class GuaritaRotation : MonoBehaviour
{
    public int tempoIntervalo;
    float angle = 90f;

    void Start()
    {
        StartCoroutine(Coroutine());
    }

    IEnumerator Coroutine()
    {
        while (true)
        {
            if (angle == 90f)
            {
                angle = -90f;
            }
            else if(angle == -90f)
            {
                angle = 90f;
            }
            transform.Rotate(angle, 0.0f, 0f);
            yield return new WaitForSeconds(tempoIntervalo);
        }
    }

}

It works but the object goes directly from 0 to -90 and I’d like it to slowly rotate from one angle to another. I’m having some troubles discovering how to make that, so any help is appreciated!

2

*Time.deltaTime

3

You first find the speed you want to rotate by, which is float rotationspeed = 90 / 5 (degrees per second). You then make a int called multiplier (make it global, aka above Start()). This will be set to 1 when we move the bridge up, 0 when it stands still and -1 when it moves the bridge down. Then you want to call in Update(): transform.Rotate(rotationspeed * multiplier * Time.deltaTime, 0, 0); then you edit your IEnumerator to be: while (true) { Set multiplier to -1 (or 1, depends on starting location), wait 5 seconds, set to 0, wait 5 seconds, set to 1, wait 5 second }.
Edit formatted code:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class GuaritaRotation : MonoBehaviour
{
    public int tempoIntervalo;
    int multiplier = 1; //Will be -1 to lower, 1 to raisen and 0 to stand still
    float rotationSpeed = 0f; //The speed we rotate by, set in Start()

    void Start()
    {
        StartCoroutine(SetMultiplier()); //I took the liberty to make a better function name
        rotationSpeed = 90 / 5; //90 degrees per 5 seconds
    }

    private void Update()
    {
        if(multiplier==0)
        {
            return;
        }
        //This can be somewhat inaccurate so we will also set the accurate rotation when we have reached the final position
        transform.Rotate(multiplier * rotationSpeed * Time.deltaTime, 0, 0); // multiplier defines direction,
                                                                             // Time.deltaTime is the time between each frame
    }

    IEnumerator SetMultiplier()
    {
        while (true) //depending on starting position you might need to edit the order of these
        {
            multiplier = 1; //sets the bridge up
            yield return new WaitForSeconds(tempoIntervalo); //waiting for it to rotate down
            SetAccurateRotation(0); //Make sure its in the right position
            multiplier = 0; //let it stand still
            yield return new WaitForSeconds(tempoIntervalo); //waiting
            multiplier = -1; //Rotate down
            yield return new WaitForSeconds(tempoIntervalo); //Wait for rotation to finish
            SetAccurateRotation(-90);//Make sure position is accurate
        }
    }

    //We do this to make sure we have the exact rotation.
    void SetAccurateRotation(int angle)
    {
        transform.rotation = Quaternion.Euler(angle, transform.rotation.y, transform.rotation.z);
    } //Sets the rotation to be exactly what you want
}