Unity 试图访问被破坏的 object

Question

I instantiate a prefab object (bullet) and if it gets destroyed while the yield return seconds, Unity throws an error at the line where I set the rigidbody velocity to zero. It doesn't care about object null checks wherever I put them. The script is attached to the Instantiated gameobject.

public IEnumerator GetOutState (GameObject target) {

        state = State.GetOut;
        if (state == State.GetOut && gameObject != null)  {
            rbMissile.velocity = -transform.up * speed;

            yield return new WaitForSecondsRealtime(1);

            rbMissile.velocity = Vector2.zero;


            StartCoroutine(FlyState(target));

        }

    }

Answer 1

What game object is this script attached to? You are checking if the gameobject attached to the script is null with

if (state == State.GetOut && gameObject != null)  {

did you mean to put

if (state == State.GetOut && rbMissile != null)  {

Also if this does not solve the issue, your issue is likely that:

StartCoroutine(FlyState(target));

Something in the FlyState method is referencing the null game object

if

if (state == State.GetOut && rbMissile != null)  { 

didn't fix it your missle is getting destroyed between when this method is called and the one second delay from:

yield return new WaitForSecondsRealtime(1);

Two possible fixes: change the IEnumerator to a void method and remove

 yield return new WaitForSecondsRealtime(1);

or else add in another check after a second passes

if (rbMissle != null) {
rbMissile.velocity = Vector2.zero;
}