- Home /
Objects will not destroy after they have been instantiated
So here is my code. I am not a programmer so I probably have done quite a few things wrong. I am an artist and this is a prototype for a project I hope to create. So I create these objects randomly (for demo purposes they are cubes and spheres) and after a certain time I want them to be destroyed and new objects replace them. However instead of the clones being destroyed the gameobject this script is attached to is destroyed.
var grid: int = 4; //size of grid
var randomnum : float = 0.1; //random number generator
var isSpawned : boolean = false;
var spawncubePrefab : GameObject; //cube
var spawnspherePrefab : GameObject; //sphere
function Start () {
}
function Update () {
if (isSpawned == true){
return;
}
else {
CreateGrid();
isSpawned = true;
DestroyClones();
} }
function CreateGrid() {
for (var i=1; i<(grid+1); i++){
var zpos= (2.5*((i*i)+i+4)); //creates rows at certain distance
for (var j=0; j randomnum) {
Instantiate(spawncubePrefab, Vector3(xpos,2,zpos), transform.rotation);
Debug.Log("I created a cube");
}
else {
Instantiate(spawnspherePrefab, Vector3(xpos,2,zpos), transform.rotation);
Debug.Log("I created a sphere");
}
}
}
}
function DestroyClones() {
var randomtime = Random.Range(3,7);
print (randomtime);
yield WaitForSeconds (randomtime);
Destroy(gameObject);
isSpawned = false;
Debug.Log("Destroyed");
}
Answer by aldonaletto · Sep 08, 2012 at 03:48 AM
@jkish1990, this damned UA text editor seems to have eaten part of your code, in the j loop. I don't know what exactly it was before, but tried to calculate xpos in some logical manner, and selected the prefab randomly based on a 50%/50% cube/sphere ratio.
Anyway, you were destroying gameObject, which's the reference to the object to which this script is attached - you should instead destroy the objects you have created, but this is impossible at DestroyClones because you don't have references to the objects! Fortunately, there's a simple solution in this case: call Destroy(clone, randomtime) right after creating an object (where clone is a reference to the object created) - this will kill the object after a randomtime delay. Since all objects are created in the same frame, they will also die in a single frame, randomtime seconds after - just wait the randomtime delay and clear the variable isSpawned:
var grid: int = 4; //size of grid var isSpawned : boolean = false; var spawncubePrefab : GameObject; //cube var spawnspherePrefab : GameObject; //sphere
function Update () { if (isSpawned == true){ return; } else { CreateGrid(); isSpawned = true; } }
function CreateGrid() { var randomtime = Random.Range(3,7); // generate the random life time for (var i=1; i<(grid+1); i++){ // create the objects var zpos= (2.5*((i*i)+i+4)); //creates rows at certain distance for (var j=0; j < grid; j++){ var xpos = 2.5 * j; //creates columns at certain distance var prefab: GameObject; if (Random.value >= 0.5) { // select the prefab randomly prefab = spawncubePrefab; } else { prefab = spawnspherePrefab; } // create the object and get a reference to it: var clone: GameObject = Instantiate(prefab, Vector3(xpos,2,zpos), transform.rotation); // program the object destruction time: Destroy(clone, randomtime); } } yield WaitForSeconds(randomtime); // wait randomtime... isSpawned = false; // then clear isSpawned, since all objects have suicided by now }
Thank you for your swift answer. I really appreciate your help and I am proud to say it works!!
Your answer
![](https://koobas.hobune.stream/wayback/20220613080754im_/https://answers.unity.com/themes/thub/images/avi.jpg)