How to make trail renderer lasts after game object destroyed?

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I’m trying to have trail renderer following my bullets. However, I want the trail renderer to still exist until the duration ends even after the bullet is destroyed.

1 Answer

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If you want to have the trail survive after the bullet is destroyed, first make sure that the trail renderer is attached to a child object of the main bullet. Then, in your bullet object, make sure you have a reference to the trail renderer (set it up in the inspector), then do something like this:

void OnDestroy()
{
    trail.transform.parent = null;
    trail.autodestruct = true;
}

This will make the trail detach, and then destroy iteslf when the trail expires.

Adding to @syclamoth, you should also set the reference to null to prevent leaks: void OnDestroy() { trail.transform.parent = null; trail.autodestruct = true; trail = null; } As a general rule, I use the OnDestroy() method to release all references. Not doing so may result in memory waste, especially on iOS.

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The garbage collecter should handle this for you, though. Have you got any evidence that this decreases memory leakage?

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