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First, create the Data Assets that will define your NPC’s personality and your world’s lore. Feel free to take a look at the example data asset we used for the DemoLevel in the folder shown below. Data Asset Location NPC Personality Data Glade Core Pn
  1. Create an NPC Personality Data Asset:
    • In the Content Browser, right-click and go to Miscellaneous → Data Asset.
    • Select NPCPersonalityData as the class. Name this asset in a way that makes sense for your game. (e.g., DA_Olenna_Personality).
    • Open the asset and fill out the fields:
      • Names: Add the character’s name. The first entry is used for the UI.
      • Lore Entries / System Instructions / etc.: Add various text snippets to define the character’s backstory, speaking style, and instructions for the AI. (You are welcome to follow the demo personality assets for guidance) NPC Personality Data Asset Name Prompt Personality Unreal Pn
      • Personality Emotions: You can statically adjust any of the 10 emotional values from 0 to 100 to tune each NPC. For Dynamic emotion adjustment, subscribe to Pro and reach out.
  2. Select Piper or ElevenLabs for TTS:
    • Piper: To use Piper, select Piper as the TTSProvider. NPC Personality Data Asset Piper Config Pn
Next you will need to import Piper models. Navigate to Window → Project Settings and you will find Glade Core Settings under the Game tab.
UE Project Settings Glade Core Settings
Under Piper Voice Downloads you can download preset piper models or import custom models.
UE Piper Voice Download
Below that there is a section to show the status of your current download in progress or idle state. Lastly, there is a custom voice importer for any other voices you may way to import online whether it be custom trained voices from yourself or other open source projects.
UE Custom Piper Voice Importer
So long as you have the 2 files for the model in the format of .onnx and config.json, you can import the custom model.
  • ElevenLabsVoiceID: To use ElevenLabs, select ElevenLabs as the TTSProvider and enter the specific Voice ID string here. Note that using this would be a cloud approach requiring an API instead of a fully local approach. NPC Personality Data Asset Voice Model Config Pn
  1. Create a World Lore Data Asset:
    • Create another Data Asset, but this time select WorldLoreData as the class. Name it (e.g., DA_World_Lore).
    • Open the asset and add LoreEntries containing common knowledge that all NPCs should be aware of.
UE World Lore Data Pn