void UseDestroyForMonoBehaviours()
{
// cube primitive is created.
GameObject gameCube = GameObject.CreatePrimitive(PrimitiveType.Cube);
// the MonoBehaviour that scales the cube when the event is called
// then destroys itself once countdown is less than 0
UsesOnDestroy monoDestroyer = gameCube.AddComponent <UsesOnDestroy>();
// dispatcher will call the event that the self destroying MonoBehaviour
// is listening to.
DestroyEventDispatcher destroyDispatcher = new DestroyEventDispatcher();
// the event dispatcher is assigned to the MonoBehaviour
monoDestroyer.AssignListenerUpdater(destroyDispatcher);
// there will be a cube for a moment after start
// but it's destroyed almost right away.
destroyDispatcher.CallUpdateListenerEvent();
}
/* * * * * * * * * * * * * * * * *
* Section 7.17.3 The Ugly Truth *
* * * * * * * * * * * * * * * * */
void UseDestroyTooMuch()
{
GameObject gameCube = GameObject.CreatePrimitive(PrimitiveType.Cube);
UsesOnDestroy monoDestroyer = gameCube.AddComponent <UsesOnDestroy>();
DestroyEventDispatcher destroyDispatcher = new DestroyEventDispatcher();
monoDestroyer.AssignListenerUpdater(destroyDispatcher);
// Calling the event 100 times.
destroyDispatcher.CallUpdateListenerEventTooManyTimes();
// it should be gone, but it's still listening?
destroyDispatcher.UpdateListenerEvent -= monoDestroyer.OnUpdateListener;
// lets disconnect the event listener.
Debug.Log("Calling event again");
// Calling the event 100 times.
destroyDispatcher.CallUpdateListenerEventTooManyTimes();
Debug.Log("When will the UseOnDestroy script actually destroy itself?");
}