# AllLayers

> Layer mask constant that includes all layers.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.5/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public const int AllLayers = -1
```

### Remarks

Additional Resources: [Physics2D.DefaultRaycastLayers](/engine/6000.5/script-reference/unityengine/physics2d/defaultraycastlayers.md), [Physics2D.IgnoreRaycastLayer](/engine/6000.5/script-reference/unityengine/physics2d/ignoreraycastlayer.md).