Switching from object to object with Raycast Problem

Question

Hello everyone reading this.

I hope someone knows how to crack this!

I use a Raycast that makes my enemies(asteroids) HealthUI pop up.
When my players Raycast deselects the asteroid, my UI disables which is perfect.
BUT: When I go select an asteroid after another asteroid (with no space in between) the UI of the previous asteroid stays on screen. I tried a lot of things. But obviously just not the right thing.

Here's my script:

 public Transform brickPlayer;
     public LineRenderer lineRenderer;
     public LayerMask mask;
     private AsteroidUI1 AsteroidUI;                
     public Transform NewHitObject;
 
 
     void FixedUpdate()
     {
         Ray ray = new Ray (transform.position, transform.forward);
         RaycastHit hitInfo;
 
         if (Physics.Raycast (ray, out hitInfo, mask)) 
         {
             Debug.DrawLine (ray.origin, hitInfo.point, Color.red);
             NewHitObject = hitInfo.collider.transform;
 
             if (hitInfo.collider.tag == "Asteroid") 
             { 
                 lineRenderer.SetPosition (0, brickPlayer.position);
                 lineRenderer.SetPosition (1, hitInfo.point);
                 lineRenderer.enabled = true;
 
                 ShowAsteroidUI ();
             } 
         } 
         else
         {
             if (NewHitObject == true) 
             {
                 StopShowAsteroidUI ();
             }
 
             Debug.DrawLine (ray.origin, ray.origin + ray.direction * 100, Color.green);
             lineRenderer.enabled = false;
         }
     }
 
 
     public void ShowAsteroidUI()
     {
         NewHitObject.GetComponent<AsteroidUI1> ().ShowUI ();
     }
 
     public void StopShowAsteroidUI()
     {
         NewHitObject.GetComponent<AsteroidUI1> ().StopShowUI ();
     }

Answer 1

Hopefully this is what you're after. I essentially added a local variable to store the "old" hit object before things get going, then used that variable to first stop the old hit object's UI in the case where you find a new hit object.

      public Transform brickPlayer;
      public LineRenderer lineRenderer;
      public LayerMask mask;
      private AsteroidUI1 AsteroidUI;                
      public Transform NewHitObject;
  
  
      void FixedUpdate()
      {
          Ray ray = new Ray (transform.position, transform.forward);
          RaycastHit hitInfo;
 
          // store the hit object in a local variable
          var oldHitObject = NewHitObject;
  
          if (Physics.Raycast (ray, out hitInfo, mask)) 
          {
              Debug.DrawLine (ray.origin, hitInfo.point, Color.red);
              NewHitObject = hitInfo.collider.transform;
  
              if (hitInfo.collider.tag == "Asteroid") 
              { 
                  lineRenderer.SetPosition(0, brickPlayer.position);
                  lineRenderer.SetPosition(1, hitInfo.point);
                  lineRenderer.enabled = true;
  
                  // hide the old hit object UI before showing the new one
                  StopShowAsteroidUI(oldHitObject);
                  ShowAsteroidUI(NewHitObject);
              } 
          } 
          else
          {
              if (oldHitObject == true) 
              {
                  // clear the hit object just so this code doesn't execute over and over
                  NewHitObject = null;
                  StopShowAsteroidUI(oldHitObject);
              }
  
              Debug.DrawLine(ray.origin, ray.origin + ray.direction * 100, Color.green);
              lineRenderer.enabled = false;
          }
      }
  
  
      public static void ShowAsteroidUI(Transform t)
      {
          t.GetComponent<AsteroidUI1>().ShowUI();
      }
  
      public static void StopShowAsteroidUI(Transform t)
      {
          t.GetComponent<AsteroidUI1>().StopShowUI();
      }

Switching from object to object with Raycast Problem

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