instantiate problem

Question

when i instantiate between my prefabs they spawn at random places, not where i want them to, i need them to spawn in the y axis right where the prefab ended. heres my script using UnityEngine; using System.Collections;

 public class SpawnPlatfoms : MonoBehaviour {
     public GameObject[] obj;
     public float spawnMin = 1f;
     public float spawnMax = 2f;
     // Use this for initialization
     void Start () {
         spawn();
     }
     
     // Update is called once per frame
     void spawn(){
         Instantiate (obj [Random.Range (0, obj.GetLength (0))], transform.position, Quaternion.identity);
         Invoke ("spawn", Random.Range (spawnMin, spawnMax));
     }
 }

Answer 1

Answer by _joe_ · Mar 29, 2015 at 03:57 PM

Using Instantiate(object, position, rotation), you will be adding the object to the position specified, in your case, it is "transform.position" which is the position of the object where you script (SpawnPlatforms) is added.

If you want to iteratively position your newly spawned prefabs one after the other on Y, you can do one of many things:

Save a counter, and position the new prefab based on that counter (for instance):

 int spawnCount = 0;
 float Offset = 5.0f;//pick the offset that is relative to your prefab size
 
 void spawn(){
     Vector3 newPosition = new Vector3(this.transform.position.x, 
 this.transform.position.y + spawnCount * Offest, this.transform.z);
 
     Instantiate (obj [Random.Range (0, obj.GetLength (0))], newPosition, Quaternion.identity);
 
     Invoke ("spawn", Random.Range (spawnMin, spawnMax));
 }

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