# withCollisions(_:) Provides access to the collisions with cloth bodies that took place. ``` func withCollisions(_ callback: (Span) -> Result) -> Result ``` ## Parameters `callback` A closure that receives a span over the collisions. ## Return Value The value returned by `callback`. ## Discussion This span is only available during the subscription callback of this event. The provided span is only valid for the lifetime of the callback. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)