# LineProviderBehaviour

Class in [Yarn.Unity](/2.0/api/csharp/yarn.unity.md)

Inherits from `MonoBehaviour`

## Summary

A `MonoBehaviour` that produces [LocalizedLine](/2.0/api/csharp/yarn.unity/yarn.unity.localizedline.md) s.

```csharp
public abstract class LineProviderBehaviour : MonoBehaviour
```

## Remarks

[DialogueRunner](/2.0/api/csharp/yarn.unity/yarn.unity.dialoguerunner.md) s use a [LineProviderBehaviour](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour.md) to get [LocalizedLine](/2.0/api/csharp/yarn.unity/yarn.unity.localizedline.md) s, which contain the localized information that [DialogueViewBase](/2.0/api/csharp/yarn.unity/yarn.unity.dialogueviewbase.md) classes use to present content to the player.

Subclasses of this abstract class may return subclasses of [LocalizedLine](/2.0/api/csharp/yarn.unity/yarn.unity.localizedline.md) . For example, [AudioLineProvider](/2.0/api/csharp/yarn.unity/yarn.unity.audiolineprovider.md) returns an [AudioLocalizedLine](/2.0/api/csharp/yarn.unity/yarn.unity.audiolocalizedline.md) , which includes `AudioClip` ; views that make use of audio can then access this additional data.

## Fields

| Name                                                                                                                                 | Description |
| ------------------------------------------------------------------------------------------------------------------------------------ | ----------- |
| [textLanguageCode](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour/yarn.unity.lineproviderbehaviour.textlanguagecode.md) |             |

## Methods

| Name                                                                                                                                            | Description                                                                                                                                       |
| ----------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------- |
| [GetLocalizedLine(Yarn.Line)](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour/yarn.unity.lineproviderbehaviour.getlocalizedline.md) | Prepares and returns a [LocalizedLine](/2.0/api/csharp/yarn.unity/yarn.unity.localizedline.md) from the specified `Yarn.Line` .                   |
| [PrepareForLines(IEnumerable)](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour/yarn.unity.lineproviderbehaviour.prepareforlines.md) | Signals to the line provider that lines with the provided line IDs may be presented shortly.                                                      |
| [Start()](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour/yarn.unity.lineproviderbehaviour.start.md)                                | Called by Unity when the [LineProviderBehaviour](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour.md) has first appeared in the scene. |

## Properties

| Name                                                                                                                             | Description                                                                                                                                                                                         |
| -------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [LinesAvailable](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour/yarn.unity.lineproviderbehaviour.linesavailable.md) | Gets a value indicating whether this line provider is ready to provide [LocalizedLine](/2.0/api/csharp/yarn.unity/yarn.unity.localizedline.md) objects. The default implementation returns `true` . |
| [YarnProject](/2.0/api/csharp/yarn.unity/yarn.unity.lineproviderbehaviour/yarn.unity.lineproviderbehaviour.yarnproject.md)       |                                                                                                                                                                                                     |


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