# CharacterControllerComponent.Collision A container that holds collision state for the character controller. ``` struct Collision ``` ## Overview All coordinates are in *physics space*, the coordinate system of the physics simulation. ## Topics ### Initializers [`init(characterEntity: Entity, hitEntity: Entity, hitPosition: SIMD3, hitNormal: SIMD3, moveDirection: SIMD3, moveDistance: Float)`](/documentation/RealityKit/CharacterControllerComponent/Collision/init(characterEntity:hitEntity:hitPosition:hitNormal:moveDirection:moveDistance:)) Create Collision and initialize all fields. ### Instance Properties [`var characterEntity: Entity`](/documentation/RealityKit/CharacterControllerComponent/Collision/characterEntity) Entity owning the character controller component. [`var hitEntity: Entity`](/documentation/RealityKit/CharacterControllerComponent/Collision/hitEntity) The entity that was hit by the character controller. [`var hitNormal: SIMD3`](/documentation/RealityKit/CharacterControllerComponent/Collision/hitNormal) Hit normal relative to physics origin. In physics space. [`var hitPosition: SIMD3`](/documentation/RealityKit/CharacterControllerComponent/Collision/hitPosition) Hit position relative to physics origin. In physics space. [`var moveDirection: SIMD3`](/documentation/RealityKit/CharacterControllerComponent/Collision/moveDirection) Move direction controller was moving (unit vector). In physics space. [`var moveDistance: Float`](/documentation/RealityKit/CharacterControllerComponent/Collision/moveDistance) Move distance controller was attempting to move. In physics space. --- 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)