Random object from array problem

Questions & Answers
1

Hello everyone. I have some object in the scene, and I want them to move upwards randomly with 1 second break. But the one which moved once will not move again, so engine will not choose the gameObject which it chose before. I made a code for it but it doesn’t work. It chooses all of the objects in array.

var targets : GameObject [];


function Update () {


StartCh();

}

function StartCh(){
yield WaitForSeconds(1);

for ( var target : GameObject in targets )
{
target.GetComponent(MoveUpScript).moveUp=true; // move the choosen object up.
}


 
 }

Thanks :slight_smile:

2

Instead of having a for - which goes over all the objects in your array one by one and applies whatever is in the block to them, which is why you’re getting that behavior - access the array at a random index using Random.Range(0, targets.Length). Also don’t call a co-routine from update, it’ll just keep piling them on top of each other. Instead have an infinite loop on Start or in the co-routine itself. Your code should look something like this:

var targets : GameObject [];

function Start () 
{
	StartCh();
}

function StartCh()
{
	while(true)
	{
		targets[Random.Range(0, targets.Length)].GetComponent(MoveUpScript).moveUp=true;
		yield WaitForSeconds(1);
	}
}