# Physics

> The changes which require colliders to be rebuilt for physics.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.Tilemaps](/engine/7000.0/script-reference/unityengine/tilemaps.md)
* **Assembly:** UnityEngine.TilemapModule

```csharp
Physics = Replaced | Transform | ColliderType
```

### Remarks

Test against this to ignore changes that cannot affect collision, such as a tile being recolored.