# PhysicsCallbacks.IBodyUpdateCallback

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

## Definition

* **Type:** Interface
* **Namespace:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md)
* **Assembly:** UnityEngine.Physics2DModule

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

## Methods

| Method                                                                                                                                 | Description                                                                                                                                                                                                                                           |
| -------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [OnBodyUpdate2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicscallbacks/ibodyupdatecallback/onbodyupdate2d.md) | Called when a [PhysicsEvents.BodyUpdateEvent](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsevents/bodyupdateevent.md) for the object occurs. This will always be called on the main-thread after the simulation has finished. |