Rigidbody not waking up

Physics
1

Hi,

I seem to have a problem with rigidbodies not waking up. I have 2 dice in my scene, when I press a button I change their position using their transform, use rigidbody.wakeup() and addForce but they are very stubborn about waking up. They usually wake up when I hit this button 2-3 times, so it seems like it registers as woken up after a frame, but I need them to wake up now. Is there a problem prone way to wake up rigidbodies?

here is my code:

    void OnClick()
    {
      //  dice1.rigidbody.isKinematic = false;
      //  dice2.rigidbody.isKinematic = false;

        Vector3 pos = new Vector3(0.3f, 1.5f, -0.4f);
        dice1.transform.position = pos;
        pos.x = 0.5f;
        dice2.transform.position = pos;

        dice1.rigidbody.velocity = Vector3.down;
        dice2.rigidbody.velocity = Vector3.down;

        dice1.rigidbody.WakeUp();
        dice2.rigidbody.WakeUp();

        dice1.GetComponent<gameDice>().Rolled = true;
        dice2.GetComponent<gameDice>().Rolled = true;     

        dice1.rigidbody.AddForce(new Vector3(Random.Range(20, 40), 0, Random.Range(20, 40)));
        dice1.rigidbody.AddTorque(new Vector3(Random.Range(1, 20), 0, Random.Range(1, 20)));
        dice2.rigidbody.AddForce(new Vector3(Random.Range(20, 40), 0, Random.Range(20, 40)));
        dice2.rigidbody.AddTorque(new Vector3(Random.Range(1, 20), 0, Random.Range(1, 20)));

        if (dice1.rigidbody.IsSleeping())
            print("still sleeping");
    }

I would appreciate any help!,

Thanks

2

You don’t need WakeUp if you’re adding forces. You need to wait a physics frame before IsSleeping will return true since the force hasn’t taken effect yet when you do the print statement.

–Eric

3

Hi thanks!

With that information, I’m delaying my calculation for 1 frame using a bool value. It’s working now.

Thanks!