Why won't my coroutine start?

Question

I have a script which uses iTween to display experience gained from an enemy which is kicked off by a health script attached to the enemy. Here are the relevant parts of the script:

EnemyHealth.js attached to enemy - this happens upon death

var aRotation = Quaternion.Euler(0 , 0 , 0); Instantiate(xpText, transform.position, aRotation); print(myExpText); xpText.GetComponent(XPText).ChangeText(myExpText); xpText.GetComponent(XPText).DisplayXP();

 Network.Destroy(gameObject);

XPText.js (attached to a 3DText prefab called XPText)

function DisplayXP() {

 yield WaitForSeconds(1);
 print(textContent);
 GetComponent(TextMesh).text = textContent;
 iTween.FadeTo(gameObject, 1, 0.5);
 yield WaitForSeconds(2);
 iTween.FadeTo(gameObject, 0, 0.5);

 yield WaitForSeconds(1);
 Destroy(gameObject);

function ChangeText(valueA)
{
    textContent = valueA.ToString() + "XP";
}

Please note that Network.Instantiate is intentional.

When I kill an enemy I get the following error:

"Coroutine couldn't be started because the the game object 'XPText' is inactive!"

So I removed the "yield WaitForSeconds" lines but then I get the error:

Destroying assets is not permitted to avoid data loss. If you really want to remove an asset use DestroyImmediate (theObject, true); UnityEngine.Object:Destroy(Object)

Any ideas how what I've done wrong or any way around this?

Answer 1

Best Answer

Answer by Mike 3 · Apr 07, 2011 at 10:11 PM

You're trying to start the coroutine on the prefab, not the instantiated object

Try something like this:

var instantiated = Instantiate(xpText, transform.position, aRotation);
print(myExpText);
instantiated.GetComponent(XPText).ChangeText(myExpText);
instantiated.GetComponent(XPText).DisplayXP();

1 Show 1 · Share

GesterX · Apr 07, 2011 at 10:16 PM 0

Share

Spot on! Thanks!

Answer 2

Answer by DaveA · Apr 07, 2011 at 09:39 PM

Just a quick thought: If the XPText it refers to is on this line:

Instantiate(xpText, transform.position, aRotation);

then make sure xpText is active by either setting .active = true or checking the box on it in the Inspector.

0 Show 1 · Share

GesterX · Apr 07, 2011 at 09:55 PM 0

Share

When I add xpText.gameObject.active = true; I get an error saying: "Prefab GameObject's can not be made active! (XPText)". xpText is a Prefab for a 3DText GameObject with the XPText script attached to it. Basically when the enemy dies I want it to instantiate the 3DText with a fade effect (hence iTween).

Why won't my coroutine start?

2 Replies

Your answer

Update about the future of Unity Answers

Follow this Question

Related Questions