Normal•2y ago

Is there a way to change ownership automatically when remote rigidbody is owned by another client?

I want ownership to change when an rigidbody owned by client a hits a rigidbody owned by client b. The object rigidbody by client b is automatically moving, not asleep. What is the best way to approach this?

kapa.ai•7/9/24, 11:41 PM

Hi @Ryan Green | MONA. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base.

kapa.ai•7/9/24, 11:41 PM

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Yes, there is a way to change ownership automatically when a Rigidbody owned by one client interacts with a Rigidbody owned by another client. This is handled by the

RealtimeTransform

RealtimeTransform

component in NormalVR.

When a Rigidbody with a

RealtimeTransform

RealtimeTransform

component collides with another Rigidbody with a

RealtimeTransform

RealtimeTransform

component, it will automatically call

RequestOwnership()

RequestOwnership()

on the second object, as long as the second object is not already owned by another client. This ensures that the same client can simulate both objects in the collision, preventing the appearance of delays during the objects' interactions.

Here is an example of how this works:

This will ensure that the collision works smoothly for local and remote players. However, please note that

RealtimeTransform

RealtimeTransform

will automatically call

ClearOwnership()

ClearOwnership()

when the Rigidbody comes to rest in order to allow other clients to take it over and simulate it. If you want to maintain ownership while the Rigidbody is sleeping, you can set in the Unity editor[^1^][^2^].

kapa.ai•7/9/24, 11:41 PM

^1^]: [RealtimeTransform + Physics (https://normcore.io/documentation/realtime/networked-physics#realtimetransform--physics)
^2^]: [Rigidbody mode (https://normcore.io/documentation/realtime/realtimetransform#rigidbody-mode)
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Note: you can ask me a follow up question by @ mentioning me again

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kapa.ai•7/9/24, 11:41 PM

@337874773742845953 kapa.ai is still learning and improving, please let us know how it did by reacting below

Ryan GreenOP•7/9/24, 11:43 PM

@Normcore Assistant can I override this default behavior so that if the second object is already owned by another client, request ownership still occurs on collision

kapa.ai•7/9/24, 11:43 PM

Let me check the knowledge base for you. One moment!

kapa.ai•7/9/24, 11:43 PM

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The default behavior of the

RealtimeTransform

RealtimeTransform

component in NormalVR is designed to respect the ownership of objects. If an object is already owned by a client, the

RequestOwnership()

RequestOwnership()

method will not take effect on collision[^1^]. This is to prevent conflicts and ensure smooth and predictable behavior in a multiplayer environment.

However, if you want to override this behavior, you would need to implement your own custom logic. This could involve checking the ownership status of the object upon collision and then attempting to request ownership regardless of its current status.

Please note that even if you call

RequestOwnership()

RequestOwnership()

, the server may still deny the request if the

preventOwnershipTakeover

preventOwnershipTakeover

flag is set to

true

true

or if the object's parent is owned by another client[^2^].

It's important to carefully consider the implications of overriding the default ownership behavior, as it could lead to unexpected results or conflicts between clients.

^1^]: [RealtimeTransform + Physics (https://normcore.io/documentation/realtime/networked-physics#realtimetransform--physics)
^2^]: [RequestOwnership() + ClearOwnership() (https://normcore.io/documentation/room/ownership-and-lifetime-flags#requestownership--clearownership)
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Note: you can ask me a follow up question by @ mentioning me again

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Mechabit•7/10/24, 10:00 AM

just use oncollisionenter to request ownership

maxweisel•7/10/24, 12:15 PM

yeah you’ll just call RequestOwnership, but you’ll want to make sure the script doesn’t also make Client B take over ownership of Client A’s rigidbody

maxweisel•7/10/24, 12:15 PM

ie if you’re hitting a baseball with a bat, you’ll want to make sure the bat checks that it’s only ever taking over ownership of a baseball