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Question by DarkNinja88 · Jul 15, 2015 at 08:48 PM · 2d

Instantiating a prefab from an objects y position?

hello, here is my code:

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class Matrix : MonoBehaviour 
 {
     public float speed = 10f;
     public float scaleRate = 1.0f;
     public float minScale = 1.0f;
     public float maxScale = 10.0f;
     public bool SizeCheck = false;
     public float Top;
 
 
 
     public Vector3 randomDirection;
     public float ForceSpeed;
 
 
     public SpriteRenderer sprite;
     public float FadeAffect = 1;
     
 
 
 
     // Use this for initialization
     void Start () 
     {
         Top = Screen.height - Screen.height;
         speed = 10f;
 
         randomDirection = new Vector3(Random.Range(-1f, 1f) * speed, Random.Range(-1f, 1f) * speed, 0);
         
         //Drag is how fast object slowing down 
         GetComponent<Rigidbody>().drag = 0;
         
         GetComponent<Rigidbody> ().AddForce (randomDirection * ForceSpeed);
 
 
     }
 
 
 
     // Update is called once per frame
     void Update () 
     {
         if(maxScale >= transform.localScale.x && transform.localScale.y <= maxScale && SizeCheck != true)
             ApplyScaleRate ();
 
         Reset ();
         if (SizeCheck == true) 
             {
                 transform.Rotate (0, 40 * Time.deltaTime, 0);
             }
 
 
 
 
     }
 
 
 
 
     
     void Reset ()
     {
 
         if (transform.position.y > Camera.main.WorldToScreenPoint (transform.position).y) 
         {
             SizeCheck = true;
             sprite.color = new Color(1f, 1f, 1f, 1f );
             transform.localScale = new Vector3(1, 1, 1);
             GetComponent<Rigidbody>().velocity = new Vector3(0, -50, 0);
             this.transform.position = new Vector3 (20f, Top + 175f, 0f);
         }
     }
     
     
     void ApplyScaleRate() 
     {
         GetComponent<Rigidbody>().velocity = new Vector3(0, -50, 0);
         transform.localScale += Vector3.one * scaleRate * Time.deltaTime;
         FadeAffect -= Time.deltaTime * 0.3f ;
         if(FadeAffect > 0)
             sprite.color = new Color(1f, 1f, 1f,FadeAffect );
     }
     
     
 
 
 }





What I am trying to do is instantiate a logo that appears based on my objects y position. My Reset() function resets the object to the top of the screen where it will begin to fall down. At that point, it should instantiate the logos one after the other down it's y path that it takes, and then i plan on having them fade away slowly but that can be dealt with later. I know how to instantiate, but I am not sure how I would even check for a constantly moving y position to be able to instantiate something?

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