Instantiate sometimes creates more then 1 objects

Are you sure this script is only attached to one object?

that only1/2 stuff is unnecessary. the code won't create more than one at a time and will wait for between 1 and 5 seconds... i created a test script as proof. as mentioned, maybe you have it attached to more than one object.

 using UnityEngine;
 using System.Collections;
  
 public class SingleInst : $$anonymous$$onoBehaviour
 {
     public GameObject gameObj1, gameObj2;
 
     private Vector3 pos1 = new Vector3(0,0,0);
     private Vector3 pos2 = new Vector3(1,0,0);
 
     public void Awake()
     {
         StartCoroutine(GenerateObjects());
     }
 
     private IEnumerator GenerateObjects()
     {
         while (true)
         {
             GenerateObj(gameObj1, pos1);
             yield return new WaitForSeconds(Random.Range(1, 5));
 
             GenerateObj(gameObj2, pos2);
             yield return new WaitForSeconds(Random.Range(1, 5));
         }
     }
 
     private void GenerateObj(GameObject obj, Vector3 pos)
     {
         var point = Instantiate(obj, pos, Quaternion.identity) as GameObject;
 
         if (point != null)
         {
             point.rigidbody2D.velocity = transform.TransformDirection(new Vector2(-1, 0) * 5);
         }
         
         Debug.Log(Time.time);
     }
 }

i checked twice and the script is on only one object the main camera. the script works good at first but after a while it generates like 2 objects on top of each other

i think this is a glitch or a bug because i tryed again and it worked perfectly

and it happend again it instaniates random but on top of each other and this should not happend because i have 2 spawn positions

but after you've instantiated 2 objects, the next will be over one that's already there. how many objects in your PointArray?

it wont be because im adding velocity to my instantiated objects making them move

ohhh... i have 10 objects in the array(3 objects but im puting more of one kind so higher chance of getting those)

why would the next one after the 2 be on top of an existing one if they apear on spawn point ?

if you're moving them, they shouldn't. are you sure they're moving?

try adding in some Debug.Log()'s to see when things are Instantiated and their positions...

all instantiated objects have rigidbodys and are moving corectly my only problem is that sometimes i find 2 in the same spot moving on top of each other and are diferent or same(so random works)

is it possible that one is Instantiated and moves to a spawn point where another is, giving the appearance that it's spawning 2?

did you log the time when each is spawned? that'll prove whether Instantiate is still the problem.

yes i have done some logs and it is working as it should spawning them 1-5 seconds.

so, it's working as written?

yes but when im watching the spawnpoint i see 2 instantiated sometimes not always

I now added a wait for seconds before the first instantiate and i see it happening much less and im happy with taht for now thank you for taking the time to help me

did you print variables earlier in the event chain to see where things can be confused? Unless there is a frame processing problem, i.e. variables dont have time to change between frames, it can only be a variable assignment error.

after i gave the delay before the first instantiate this problem seems to be gone i played the game a few times and i did not see it anymore

omg i just noticed now... my code is set to instantiate on spwner 1 and 2 and 90% are on spawner 1 for some reason so there is an instantiate problem here...

the code that you posted alternates between the 2 positions. maybe post your updated code.

i am still using this but there are obvious problem here because it only rearly generate on 2nd position ...

  yield return new WaitForSeconds(Random.Range(2,5));
         GameObject Point1 = Instantiate(PointArray[(Random.Range(0, PointArray.Length))], PointSpawner1.position, Quaternion.identity) as GameObject;
         Point1.rigidbody2D.velocity = transform.TransformDirection(new Vector2(-1, 0) * 5);
         yield return new WaitForSeconds(Random.Range (2,5));
         GameObject Point2 = Instantiate(PointArray[(Random.Range(0, PointArray.Length))], PointSpawner2.position, Quaternion.identity) as GameObject;
         Point2.rigidbody2D.velocity = transform.TransformDirection(new Vector2(-1, 0) * 5);
         yield return new WaitForSeconds(Random.Range(2,5));

if im using debug.log and typing at start at middle and at end the time values im getting this: at start(0),at middle(5.09),at end(7) at start(7) etc

can you print the contents of PointArray and PointSpawner1/2 positions

ok so for point spawner 1:(8.5, 3.7, -4.0),point spawner2:(8.5, 3.0, -4.0) and for the array:normalpoint,highpoint,megapoint

1) you said the array had 10 entries but you posted 3.

2) what are values of the normalpoint, etc.

i'm trying to recreate your problem so need the exact info.

ok so it has 10 elements 0-5 normal points,6-9 high point and last one mega point

normaly it should spawn 1 point on top next on bottom at diferent speeds but it spawns sometimes 2 on top or 3 on bottom ins$$anonymous$$d of one on the top and one on the bottom

i'm not understanding what you expect this to do versus what it is doing. the code performs as written. maybe you can post some screenshot of what you see (showing the incorrect spawning). my tests with the info you gave all do what they're supposed to.

can you print all of the debug log for each spawn... this modified code will do it, along with showing gizmos on the spawn points (they're fairly close to each other)

 using UnityEngine;
 using System.Collections;
  
 public class SingleInst : $$anonymous$$onoBehaviour
 {
     private readonly Vector3 _pos1 = new Vector3(8.5f, 3.7f, -4.0f);
     private readonly Vector3 _pos2 = new Vector3(8.5f, 3.0f, -4.0f);
 
     public GameObject NormalPoint, HighPoint, $$anonymous$$egaPoint;
 
     private GameObject[] _pointArray;
 
     public void Awake()
     {
         _pointArray = new [] {
             NormalPoint, NormalPoint, NormalPoint, NormalPoint, NormalPoint,
             HighPoint, HighPoint, HighPoint, HighPoint,
             $$anonymous$$egaPoint
         };
 
         StartCoroutine(GenerateObjects());
     }
 
     private IEnumerator GenerateObjects()
     {
         while (true)
         {
             GenerateObj(_pos1);
             yield return new WaitForSeconds(Random.Range(1, 5));
             
             GenerateObj(_pos2);
             yield return new WaitForSeconds(Random.Range(1, 5));
         }
     }
 
     private void GenerateObj(Vector3 spawnPos)
     {
         var point = Instantiate(_pointArray[(Random.Range(0, _pointArray.Length))], spawnPos, Quaternion.identity) as GameObject;
 
         if (point != null)
         {
             point.rigidbody2D.velocity = transform.TransformDirection(new Vector2(-1, 0) * 5);
             Debug.Log(Time.time + " at " + point.transform.position);
         }
         else
         {
             Debug.Log("Instantiated failed!");
         }       
     }
 
     public void OnDrawGizmos()
     {
         AddDebugGizmoSphere(_pos1, 0.3f, Color.red);
         AddDebugGizmoSphere(_pos2, 0.3f, Color.green);
     }
 
     private void AddDebugGizmoSphere(Vector3 pos, float radius, Color color)
     {
         Gizmos.color = color;
         Gizmos.DrawSphere(pos, radius);
     }
 }

here you see these 2 points spawning way to close to each other and sometimes they are on top of each other

i did the spawners again and even if they apear to spawn on the same place on the Debug.Log it shows them spawning perfectly each time on spawner1 and spawner2

between the time it printed the perfect values i noticed it spawned 2-3 more before printing the next ones

or it prints the transform at 3.0 and spawns it at 3.7

at this point, i'd have to see a lot more of your code and proj settings, etc. because i'm confident the bits i've seen work fine.

  using UnityEngine;

using System.Collections;

public class PointSpawner : $$anonymous$$onoBehaviour { public GameObject[] PointArray; public Transform PointSpawner1; public Transform PointSpawner2;

 void Start () 
 {
     StartCoroutine(SpawnPoints());
 }

 IEnumerator SpawnPoints()
 {
     while(true)
     {
         yield return new WaitForSeconds(Random.Range(2,5));
         GameObject Point1 = Instantiate(PointArray[(Random.Range(0, PointArray.Length))],PointSpawner1.position, Quaternion.identity) as GameObject;
         Point1.rigidbody2D.velocity = transform.TransformDirection(new Vector2(-1, 0) * 5); 
         yield return new WaitForSeconds(Random.Range (2,5));
         GameObject Point2 = Instantiate(PointArray[(Random.Range(0, PointArray.Length))],PointSpawner2.position, Quaternion.identity) as GameObject;
         Point2.rigidbody2D.velocity = transform.TransformDirection(new Vector2(-1, 0) * 5); 
         yield return new WaitForSeconds(Random.Range(2,5));
     }
 }

}

This is the whole code for the point spawner.I put this script on the $$anonymous$$ain Camera ill post below a picture of what i have in the inspector for the script

i still can't see anything wrong.

i sent you a pm. click on the forums then in the top right you should find a link to your inbox.

um after just a few hours i think i found the problem ... and it is kinda frustrating...i was moving the points via the animation and not via velocity so ... derp

and i was controlling the animation via a script on each of the point objects

oops ;) so, all ok?

yes.... and i wasted so much time with this thank you :)