random obstacle generator

it's working great thanks.but i want the obstacles to appear after a specific y distance.can you help me with that.i really can't thank you enough for this.thanks for the quick reply.also,can you tell me why my script wouldn't work?i'm trying to learn from my mistakes

i also have this script attached to the obstacles in order to destroy them when not needed

using UnityEngine; using System.Collections;

public class Destroy_obstacle : $$anonymous$$onoBehaviour {

 // Use this for initialization
 void Start () {
 
 }
 
 // Update is called once per frame
 void Update () {
     if (loco.playerDistance > transform.position.y) {
                     Destroy (this.gameObject);
             }
 
 }

} but when i use this ,the generator stops generating ant any more obstacles.some help?

Hi, so here's a quick update to the script:

 public float startDistance = 10;
 public float yDistance = 100;
 public float $$anonymous$$Spread = 5;
 public float maxSpread = 10;
 
 public Transform playerTransform;
 public Transform obstaclePrefab;
 
 float ySpread;
 float lastYPos;
 
 void Start(){
     ySpread = Random.Range($$anonymous$$Spread, maxSpread);
     lastYPos = playerTransform.position.y + (startDistance - ySpread - yDistance);
 }
 
 void Update () {
     if(playerTransform.position.y - lastYPos >= ySpread){
         float lanePos = Random.Range(0, 3);
         lanePos = (lanePos-1)*1.5f;
         Instantiate(obstaclePrefab, new Vector3(lanePos, lastYPos + ySpread + yDistance, 0), Quaternion.identity);
         
         lastYPos += ySpread;
         ySpread = Random.Range($$anonymous$$Spread, maxSpread);
     }
 }

Changing startDistance should change how far ahead of the player, objects start and hopefully changing the yDistance variable will control how far ahead of the player, objects are spawned.

As for why your first attempt was incorrect, when the playerDistance was 10 or 10.1 or 10.4 or 10.3222223323 your if would return true, so there was a range of time between certain positions where it would keep instantiating new objects. It is basically equivalent to:

 while(loco.playerDistance > 9.5 %% loco.playerDistance < 10.5){
     Instantiate();
 }

Your last problem I am not too sure about. Is this code attached to the same object as where you are attaching the code I have given you, if so you are deleting the object that runs the instantiations.

Otherwise add some debugs:

 if (loco.playerDistance > transform.position.y) {
     Debug.Log("Player distance: " + loco.playerDistance);
     Debug.Log(gameObject + " is at height " + transform.position.y);
     Destroy (gameObject);
 }

yup,it's working .i have created an empty object called obstacleGenerator to which your script is attached.then there is another object called obstacle which i've referenced to the script.what's happening is it deletes the object obstacle and hence the script doesn't know what to instantiate.how can i overcome this?

Ahh, save your obstacle object as a prefab. Set up an obstacle with your deletion script on it and put it at position (0, 0, 0) and then drag that whole object into your Project window and it should create what is known as a prefab. Then set the variable on the obstacleGenerator to the obstacle prefab. That way, the instantiated objects are clones of the prefab and not the original, so the original is never deleted.