---
title: LightmapComponent.EntityIndex
framework: realitykit
role: symbol
role_heading: Type Alias
path: realitykit/lightmapcomponent/entityindex
---

# LightmapComponent.EntityIndex

## Declaration

```swift
typealias EntityIndex = Int
```

## See Also

### Mapping entities to the lightmap

- [entityIndexInLightmapResource](realitykit/lightmapcomponent/entityindexinlightmapresource.md)