Game Object Scaling based on Proximity

Question

helloHello,

I want to scale a Game object based on how far away on how close the player is.

Note This is eventually for VR. I have a Game Object thats a small room and as you get closer it scales to be larger & visVersa.

What am I doing wrong?

 public class scalePlayer : MonoBehaviour
 {
     public GameObject room;
     public Transform center;
     public float oldDist;
 
     void Awake()
     {
    //Determine the Starting Distance between player and center of room to be scaled
          float oldDist = Vector3.Distance(center.position, transform.position);
     }
 
 
 
     void Update()
     {
             //Determine the New distance between player and center of room to be scaled
             float newDist = Vector3.Distance(center.position, transform.position);
             room.transform.localScale = room.transform.localScale * (oldDist - newDist) * Time.deltaTime;;
        }
 }

There has to be an elegant way to do this

The scale of the room just goes down to Zero

Any ideas?

Thanks!

~be

Answer 1

Best Answer

Answer by Hellium · Dec 13, 2020 at 07:50 PM

You were on the right track actually. Lenda0210 is right indicating you should remove the Time.deltaTime. If you want to scale down the closer the object is from the center (if the obejct is at center's position, the object will have a scale of (0,0,0):

   public class scalePlayer : MonoBehaviour
   {
       public GameObject room;
       public Transform center;
       public float ScaleMultiplier;
       private Vector3 initialScale;
   
       void Awake()
       {
               initialScale = room.transform.localScale;
       }
   
       void Update()
       {
               float distance = Vector3.Distance(center.position, transform.position);
               room.transform.localScale = initialScale * distance * ScaleMultiplier;
       }
   }

If you want the room to have its initial size when the object is on the same position as the center:

       void Update()
       {
               float distance = Vector3.Distance(center.position, transform.position);
               room.transform.localScale = initialScale + Vector3.one * distance * ScaleMultiplier;
       }

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Bentoon · Dec 13, 2020 at 09:46 PM 1

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@Hellium Awesome! Thank you ! Since I want make the Object Larger as you approach I modded the code like such:

  public class scalePlayer : $$anonymous$$onoBehaviour
   {
        public GameObject room;
        public Transform center;
        public float Scale$$anonymous$$ultiplier;
        private Vector3 initialScale;
    
        void Awake()
        {
                initialScale = room.transform.localScale;
        }
    
        void Update()
        {
                float distance = Vector3.Distance(center.position, transform.position);
                room.transform.localScale = (initialScale / distance) * Scale$$anonymous$$ultiplier;
        
 
        }
    
   }

Thanks both @Lenda0210 & @Hellium

Answer 2

Answer by Lenda0210 · Dec 13, 2020 at 07:50 AM

Just remove the Time.delta time and should be fine ^-^ If multiplier equals to one, it will be increasing 1 scale per distance (meters maybe? The unity base distance unit idk). Hope this helps you!

  public class scalePlayer : MonoBehaviour
  {
      public GameObject room;
      public Transform center;
      public float ScaleMultiplier;
  
      void Awake()
      {
 
      }
  
      void Update()
      {
              float Dist = Vector3.Distance(center.position, transform.position);
              room.transform.localScale = Dist * ScaleMultiplier;
         }
  }

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Bentoon · Dec 13, 2020 at 07:18 PM 0

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@Lenda0210 Thanks but the "room" Just gets big really fast and doesn't come back down when I move away

Game Object Scaling based on Proximity

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