---
title: EarlyUpdate.PhysicsCore2DEarlyUpdate
product: Unity Editor
version: '6000.6'
latest_version: '7000.0'
status: This page documents version 6000.6. The latest version is 7000.0.
canonical: https://docs.unity.com/en-us/engine/6000.6/script-reference/unityengine/playerloop/earlyupdate/physicscore2dearlyupdate
latest_url: https://docs.unity.com/en-us/engine/7000.0/script-reference/unityengine/playerloop/earlyupdate/physicscore2dearlyupdate.md
last_updated: 2026-11-04
generated_at: 2026-11-04T19:52:29.950Z
locale: en-us
---

# EarlyUpdate.PhysicsCore2DEarlyUpdate

> Native Player loop system that performs the early-frame update for the low-level 2D physics API in the Unity.U2D.Physics namespace.

## Definition

* **Type:** Struct
* **Namespace:** [UnityEngine.PlayerLoop](/engine/6000.6/script-reference/unityengine/playerloop.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public struct EarlyUpdate.PhysicsCore2DEarlyUpdate
```

## Remarks

Unlike the other `PhysicsCore2D` systems, this system also runs in Edit mode so that authoring changes take effect.

This struct identifies a native system in the Player loop. It has no members, and the system's update logic runs in native engine code. Use this type with [PlayerLoopSystem.type](/engine/6000.6/script-reference/unityengine/lowlevel/playerloopsystem/type.md) to find the system when you reorder, replace, or remove it in a custom Player loop. For more information, refer to [Customizing the Player loop](/engine/6000.6/manual/scripting/managing-update-order/player-loop-customizing.md).