# PhysicsCallbacks.IBodyUpdateCallback

> An interface that when implemented, can be called as a target by PhysicsWorld.SendBodyUpdateCallbacks.

## Definition

* **Type:** Interface
* **Namespace:** [Unity.U2D.Physics](/engine/6000.6/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public interface PhysicsCallbacks.IBodyUpdateCallback
```

## Methods

| Method                                                                                                                     | Description                                                                                                                                                                                                                               |
| -------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [OnBodyUpdate2D](/engine/6000.6/script-reference/unity/u2d/physics/physicscallbacks/ibodyupdatecallback/onbodyupdate2d.md) | Called when a [PhysicsEvents.BodyUpdateEvent](/engine/6000.6/script-reference/unity/u2d/physics/physicsevents/bodyupdateevent.md) for the object occurs. This will always be called on the main-thread after the simulation has finished. |