Question by Kie789 · Apr 14, 2020 at 02:26 PM · 2d rotation angles 2d platformer 2.5d

Orbiting Crosshair issue when trying to stop at a specific angle

Hi Guys, I am pretty new here and I recently followed a tutorial to get me onto Game Development again. I have been working on a simple 2.5D game where the main player character is able to shoot spheres for the time being. I have managed to implement a crosshair that rotates around the player and managed to get it to stop when it reaches 90 and -90 degrees using the mouse.

However the issue I am having is when I move the mouse fast the crosshair seems to add more or less rotation which means on the next frames it does not stick to the 90 and -90 degrees I desire.

Image 1 - what I want to happen: Image 1 Image 2 - What happens if I move the mouse fast: Image 2

Code is below: public class CrosshairManager : MonoBehaviour { [SerializeField] private Transform _pivotPosition;

     [SerializeField]
     public float yOrbit = 0;
 
     [SerializeField]
     public float yOrbitOver, _oldAngle, _angle;
 
     [SerializeField]
     private bool _goingUp = false, _goingDown = false, _stop = false;
 
     public static Vector3 RotatePointAroundPivot(Vector3 point, Vector3 pivot, Quaternion angle)
     {
         return angle * (point - pivot) + pivot;
     }
 
     // Update is called once per frame
     void FixedUpdate()
     {
         //Work out angle from crosshair position and mouse position
         Vector3 crosshairVector = Camera.main.WorldToScreenPoint(transform.position);
         crosshairVector = Input.mousePosition - crosshairVector;
         _angle = Mathf.Atan2(crosshairVector.y, crosshairVector.x) * Mathf.Rad2Deg;
 
         //Set boolean flags to see if mouse is going up or down
         if (_angle > 0)
         {
             _goingUp = true;
             _goingDown = false;
         }
         else if (_angle < 0)
         {
             _goingDown = true;
             _goingUp = false;
         }
 
         //Check if mouse is going up or down and add angle to yOrbit
         if (_goingDown && yOrbit > -90)
         {
             Debug.Log("Going Down");
             yOrbit += (_angle);
         }
         else if (_goingUp && yOrbit < 90)
         {
             Debug.Log("Going Up");
             yOrbit += (_angle);
         }
 
         //Check if yOrbit (angle of crosshair) is over 90 and stop it in place
         if (yOrbit >= 90.0f)
         {
             yOrbitOver = yOrbit - 90.0f;
             Debug.Log(yOrbitOver);
 
            _angle = _angle + yOrbitOver;
 
             yOrbit -= yOrbitOver;
             _stop = true;
         }
         //Check if yOrbit (angle of crosshair) is below -90 and stop it in place
         else if (yOrbit <= -90.0f)
         {
             yOrbitOver = yOrbit + 90.0f;
             Debug.Log(yOrbitOver);
 
             _angle = _angle - yOrbitOver;
             
             yOrbit -= yOrbitOver;
             _stop = true;
         }
         //If within desired angle restraints then set stop to false and allow movement
         else
         {
             _stop = false;
         }
         //Rotate the corsshair around the pivot point
         if (_stop == false)
         {
             transform.position = RotatePointAroundPivot(transform.position, _pivotPosition.transform.position, Quaternion.Euler(0, 0, _angle));
         }
     }
 }

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