partial rotation follow causing problems when rotation goes from 180 to -180

So in this case where the rotation multiplier is 0.5, when it goes from 180 to -180 the rotation of the object that is being rotated goes from 90 to -90 while I need it to go from 90 to 91, 92, etc. and vise versa, so it needs to work in the opposite direction too.

Code (CSharp):

1. [SerializeField] private Transform _target;
2.     [SerializeField] private float _multiplier = 0.5f;
3.  
4.  
5.     void Update()
6.     {
7.         Vector2 directionToTarget = _target.position - transform.position;
8.  
9.         float angle = Mathf.Atan2(directionToTarget.y, directionToTarget.x) * Mathf.Rad2Deg;
10.  
11.         Quaternion targetRotation = Quaternion.Euler(0f, 0f, angle * _multiplier);
12.         transform.rotation = targetRotation;
13.      
14.     }

 

You'll need to start tracking the rotation as a difference, rather than as an absolute. When you see that the difference from the previous frame has changed by more than 180 degrees, you can add or subtract 360 - that way it will interpret 179 to -179 as +2 rather than -358. The number resulting from that would be safe to multiply by any factor.

Code (csharp):

1. float lastAngleSrc = 0f;
2. float myAngle= 0f;
3. void Update() {
4. //using your original code here
5.     Vector2 directionToTarget = _target.position - transform.position;
6.     float angle = Mathf.Atan2(directionToTarget.y, directionToTarget.x) * Mathf.Rad2Deg;
7. //now we figure out the difference
8.     float angleDiff = angle - lastAngleSrc;
9.     if (angleDiff > 180f) angleDiff -= 360f;
10.     if (angleDiff < -180f) angleDiff += 360f;
11.     myAngle += angleDiff * _multiplier;
12.     lastAngleSrc = angle;
13. //and now we're back to your logic
14.     Quaternion targetRotation = Quaternion.Euler(0f, 0f, myAngle * _multiplier);
15.     transform.rotation = targetRotation;
16. }

 

thanks