Reset Rigidbody2D

Hi!

I'm trying to reset a Rigidbody2D after it falls and hits the ground, all works except the
myRigidBody.sleepMode = RigidbodySleepMode2D.StartAsleep;
It goes back to the start position but it do not want to sleep.
Help Please!.

Code (CSharp):

1. void OnCollisionEnter2D(Collision2D other)
2. {
3. if (other.gameObject.layer == 8)
4. {
5.  
6.  
7. myRigidBody.position = myStartPosition;
8. myRigidBody.velocity = Vector3.zero;
9. myRigidBody.angularVelocity = 0f;
10. myRigidBody.constraints = orginalConstrains;
11. myRigidBody.sleepMode = RigidbodySleepMode2D.StartAsleep;
12.  
13. }
14. }

 

I want to reset objects in the level when the players dies and restart from a re-spawn point.
So I have stones and other objects that falls down on to the ground with rigidbodies2d on em.
I can reset all except the sleeping state on the objects.
The state they have are Start asleep. How do i make em sleep again after they have woken?

The Debug.Log(myRigidBody.sleepMode) prints StartAsleep after reset code but still they fall.
What else do I have to reset to make the rigid body sleep again?
It is like they still have collision with the ground after the Reset().
Do I need to make a coroutine yield WaitForFixedUpdate after moving it to know that it do not collide
with anything? Or turn the collider on/off?

 

Hmm if i log it ( Debug.Log(myRigidBody.IsSleeping() ) , it goes to sleep for one frame the it wakes up again.
When it falls for the first time and hit the ground it never falls asleep either.

 

Thanks for the super fast and good help, got it working by enabling and disabling the collider!

Here is the code (don't know if all is needed in the Reset() but it works )
Used keys for testing purpose.

Code (CSharp):

1. public class Stone : MonoBehaviour
2. {
3.     public SoundManager_sc sm;
4.     private Vector2 myStartPosition;
5.     private LayerMask GroundLayerMask;
6.     private Rigidbody2D myRigidBody;
7.     private RigidbodyConstraints2D orginalConstrains;
8.     private CircleCollider2D myCollider;
9.  
10.     private void Awake()
11.     {
12.         myStartPosition = transform.position;
13.     }
14.  
15.     void Start()
16.     {
17.         myStartPosition = transform.position;
18.         sm = FindObjectOfType<SoundManager_sc>();
19.         GroundLayerMask = LayerMask.GetMask("Ground");
20.         myRigidBody = GetComponent<Rigidbody2D>();
21.         orginalConstrains = myRigidBody.constraints;
22.         myCollider = GetComponent<CircleCollider2D>();
23.         onGround = false;
24.     }
25.  
26.     private void Update()
27.     {
28.         if (myCollider.enabled == false && myRigidBody.IsSleeping() == true) myCollider.enabled = true;
29.  
30.         if (Input.GetKeyUp("h") == true) ResetMe();
31.  
32.         if (Input.GetKeyUp("g") == true) myRigidBody.WakeUp();
33.     }
34.  
35.     void ResetMe()
36.     {
37.         myCollider.enabled = false;
38.         transform.position = myStartPosition;
39.         myRigidBody.constraints = RigidbodyConstraints2D.None;
40.         myRigidBody.velocity = new Vector2(0.0f, 0.0f);
41.         myRigidBody.angularVelocity = 0f;
42.         myRigidBody.rotation = 0.0f;
43.         myRigidBody.constraints = orginalConstrains;
44.         myRigidBody.Sleep();
45.     }
46.  
47.     void OnCollisionEnter2D(Collision2D other)
48.     {
49.         if (other.gameObject.layer == 8)
50.         {
51.             sm.Play("StoneFall");
52.             myRigidBody.velocity = new Vector2(0.0f, 0.0f);
53.             myRigidBody.constraints = RigidbodyConstraints2D.FreezeAll;
54.  
55.         }
56.     }
57. }

 

Works (for now anyway )
Why would it wake it up if it's not colliding whit anything?
It is being enabled a frame after I move the rigidbody so it has nothing to collide with.

I can imagine same thing can be done by enabling/disabling isKinematic and some flags.