# isBuildingPlayer

> Returns true when Unity is actively building a Player or AssetBundles

## Definition

* **Type:** Property
* **Namespace:** [UnityEditor](/engine/6000.6/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

```csharp
public static bool isBuildingPlayer { get; }
```

### Remarks

This returns true during Player builds ([BuildPipeline.BuildPlayer](/engine/6000.6/script-reference/unityeditor/buildpipeline/buildplayer.md)) and AssetBundle builds ([BuildPipeline.BuildAssetBundles](/engine/6000.6/script-reference/unityeditor/buildpipeline/buildassetbundles.md)). It can be used to check the context inside script code that could be triggered during a build, for example when [ExecuteAlways](/engine/6000.6/script-reference/unityengine/executealways.md) is being used on a [MonoBehaviour](/engine/6000.6/script-reference/unityengine/monobehaviour.md).