How to detect the end of Rigidbody.AddForce?

Unity Engine
1

I am looking at the following:

MonoBehaviour.FixedUpdate - Unity - Scripting API: MonoBehaviour.FixedUpdate()
Rigidbody.AddForce - Unity - Scripting API: Rigidbody.AddForce

I’d like to call audio.Play(); at the end of AddForce so it plays the audio when the rigid body hits the ground/plane.

How to do the above?

Thanks in advance for your help.

2

AddForce ends right after, it has no continous impact.

but if you want to detect the hit of it against something else, you can use void OnCollisionEnter( … )

3

I apply AddForce to a rectangular prism. The rectangular prism then falls down. Unity animates when it is falling down.

I tried theOnCollisionEnter() but it played the audio when it starts falling.

I’d like to call audio.Play() right after it hits the ground. How can I do it?

Thanks again.

4

Check for the collision between the object and the ground in OnCollisionEnter().

5

I’ve just tried the following C# code:

void OnCollisionEnter(Collision other)
{

if (other.gameObject.name == “ground”)
{
audio.Play();
}
}

Unfortunately, it still does not work. The audio.Play() still happens at the beginning of the anmation(falling down). I’d like to the audio.Play() happens when it hits the ground.

This is a test program. I only have rectangular prism and the ground in the scene.
I am wondering if I am not doing right.

Thanks again.

6

After debugging further, I think I have a better understanding of my problem now.

BEFORE: I call rigidbody.AddForce() in FixedUpdate() all the time. This is how I see the animation when it is falling.

NOW: I call rigidbody.AddForce() once. Now, it works as expected.

Please correct me if my observation/conclusion above is wrong.

Thanks again for your help.