Version: 2023.1
LanguageEnglish
  • C#

Collision

class in UnityEngine

/

Implemented in:UnityEngine.PhysicsModule

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Description

Describes a collision.

Collision information is passed to Collider.OnCollisionEnter, Collider.OnCollisionStay and Collider.OnCollisionExit events.

Note: The contact points are in world-space.

See Also: ContactPoint.

Properties

articulationBodyThe ArticulationBody of the collider that your GameObject collides with (Read Only).
bodyThe Rigidbody or ArticulationBody of the collider that your Component collides with (Read Only).
colliderThe Collider we hit (Read Only).
contactCountGets the number of contacts for this collision.
contactsThe contact points generated by the physics engine. You should avoid using this as it produces memory garbage. Use GetContact or GetContacts instead.
gameObjectThe GameObject whose collider you are colliding with. (Read Only).
impulseThe total impulse applied to this contact pair to resolve the collision.
relativeVelocityThe relative linear velocity of the two colliding objects (Read Only).
rigidbodyThe Rigidbody we hit (Read Only). This is null if the object we hit is a collider with no rigidbody attached.
transformThe Transform of the object we hit (Read Only).

Public Methods

GetContactGets the contact point at the specified index.
GetContactsRetrieves all contact points for this collision.