tk2dSpriteAnimator become null (sometimes)

[wijesijp]

I have following code in my take damage function

Code: [Select]

if (isAlive)
        {
            towerHealth -= damageAmount;
            if (towerHealth <= 0)
            {

                isAlive = false;
                anim.Stop();

            }
        }
This works properly most of the time.
But once in a while I get following error, NullReferenceException: Object reference not set to an instance of an object

I trace the error to anim (tk2dSpriteAnimator) becoming null.
The main game object with the sprite is active, any idea how this could happen?

Any advice on how to fix this?

[unikronsoftware]

No idea how this could happen - tk2dSpriteAnimator is a component, add some breakpoints on all your code that destroys components, maybe this is getting destroyed by accident?

[wijesijp]

tk2dSpriteAnimator is a child object inside the main object.
I never destroy the animator.

if the parent object is active tk2dSpriteAnimator should be there too right?

[unikronsoftware]

Yup it should. The animator is never destroyed by any tk2d code - what does the scene looks like immedaitely after its gone null? Does the object still exist, or is it just the reference that has gone null?

[wijesijp]

Seems like the reference that has gone null
to stop the error I am now doing this,

Code: [Select]

anim = gameObject.GetComponentInChildren<tk2dSpriteAnimator>();
the problem is I can't simulate the problem without adding large number of units to the screen. It does not happen if I have few units on the screen

As you can see from the previous code I am in the process of destroying the main game object when the health goes below 0.
what I am doing is playing death animation and at the end I am destroying the gameObject

 

[unikronsoftware]

How are you destroying the gameobject? If you're using Destroy, try DestroyImmediate. Just to rule out more things....