OnTriggerEnter and spawning gameObjects

Unity Engine
1

Hi All,

I am having trouble with the following:
I have a small army of 100 soldiers. The player can cast a shield on top of those soldiers. The shield is a big sphere that when entered, sends the troops a message that they are shielded. On Exit the shield sends the soldiers the opposite message. It works fine for one thing. If the soldiers are stationary and I spawn the shield, the collision is not detected. If I then move the soldiers, it is detected. I tried scaling the shield, but that the problem stays the same. Same thing when the shield shrinks: the collision is not detected when the soldiers are stationary. Is there any way to fix this? I have included the code on the shield.

//this script handles the effects of the AoE shield
private var shrink : boolean;

function Start () 
{
	yield WaitForSeconds(5);
	shrink = true;
	Destroy(this.gameObject, 3);
}

function Update()
{
	
	if(transform.localScale != Vector3(100, 100, 100)  !shrink)
	{
		transform.localScale = Vector3.Lerp(transform.localScale, Vector3(100, 100, 100) ,Time.deltaTime);
	}

	if(shrink)
	{
		transform.localScale = Vector3.Lerp(transform.localScale, Vector3(0,0,0),Time.deltaTime*2);
	}
}
function OnTriggerEnter(other : Collider)
{
	if(other.tag == "Soldier")
	{
		other.GetComponent(troopScript).ActivateAOEShield();
		
	}
}

function OnTriggerExit(other : Collider)
{
	if(other.tag == "Soldier")
	{
		other.GetComponent(troopScript).DeactivateAOEShield();
	}
}
2

Have you tried OnTriggerStay ?

You could try to cast a physics sphere-cast to those in the sphere every couple of seconds to save on performance. This will allow you to get to those inside the trigger as an alt to OnTriggerStay.

3

Thanks for the answer. I could do a OnTriggerStay, but wouldn’t that give me the same problem? The trigger isn’t registered until the soldier moves. I am not sure what you mean by “a physics sphere-cast”. Could you elaborate?