Meta Developers

The Meta Avatars SDK for Unity package provides developers with two methods for integrating avatars into their applications: preset avatars and user-created avatars. You can use them in combination to create a richer user experience. Preset avatars can be used to represent NPC characters, or as a fallback avatar when user-created avatars fail to load.

Avatars 1.0 Deprecation

With the introduction of Avatars 2.0, the old style of avatar is being depcreated. Support for loading them will continue until March 30th, 2025.

Preset Avatar

The Avatar SDK includes thirty-three Avatars 2.0 presets that you can load locally from disk. These Avatars are useful for prototyping, offline play, and as a fallback. The assets are located in zips within the Oculus/Avatar2_SampleAssets/SampleAssets directory. All provided example scenes can load preset Avatars. An example of loading them is provided in SampleAvatarEntity.cs. They are named by number_platform.glb, where the number is 0-32 and the platform is either Rift or Quest.

User-Created Avatar

User-created avatars should be used whenever possible to enrich the user experience in your application. In order to load a user-created avatar, do the following:

Initialize the Meta Horizon platform:
- After initializing of OvrPlatformInit, call Users.GetAccessToken() to retrieve the Avatar token from the Meta Horizon platform.
- Then, pass the Meta Access Token to OvrAvatarEntitlement.SetAccessToken().
Set the user ID for each Avatar on the OvrAvatarEntity component:
- Call Users.GetLoggedInUser() to retrieve the local user’s ID from the Meta Horizon platform SDK. In order to load a remote user’s Avatar, their ID must be sent over the network and set on the corresponding OvrAvatarEntity component.
Finally, download and load the Avatar:
- Call LoadUser() to trigger downloading and loading. For an example of retrieving the user ID and loading an Avatar, see SampleAvatarEntity.cs. This example also includes suggested settings for retrying downloads in the case of a network connection issue.

// Source:OvrPlatformInit.cs
Users.GetAccessToken().OnComplete(GetAccessTokenComplete);

void GetAccessTokenComplete(Message<string> msg) {
  if (String.IsNullOrEmpty(msg.Data)) {
    ...  // Error handling
  } else {
    OvrAvatarEntitlement.SetAccessToken(msg.Data);
    status = OvrPlatformInitStatus.Succeeded;
  }
}

// Source:SampleAvatarEntity.cs
LoadUser();

Common Errors and Troubleshooting Steps

App does not have required permissions
- Ensure that you have the proper avatar permission granted for your app. For more details please refer to the setup section.
App IDs are not set properly in Unity project
- In order to retrieve user-created avatars, developers need to ensure that the oculus App IDs are set correctly in the Oculus -> Platform -> Edit Settings section.
User-created avatar is not loading
- This could be caused by various different reasons (network issue, user revoke access, etc). During development, the error log will be available in the Unity console log so that developers can cater for the various scenarios and fallback properly.

Best practices on loading user-created avatar

Have a fallback and retry mechanism. There could be multiple reasons on why loading can fail. Several common reasons are:
- User has no avatar
- User revoke app access
- Network issues

// Possible scenarios
// Source:SampleAvatarEntity.cs
OvrAvatarManager.HasAvatarRequestResultCode.HasNoAvatar
OvrAvatarManager.HasAvatarRequestResultCode.SendFailed
OvrAvatarManager.HasAvatarRequestResultCode.RequestFailed
OvrAvatarManager.HasAvatarRequestResultCode.BadParameter
OvrAvatarManager.HasAvatarRequestResultCode.RequestCancelled
OvrAvatarManager.HasAvatarRequestResultCode.UnknownError

// Retry and fallback logic based on the scenarios above
// Source:SampleAvatarEntity.cs
switch (hasAvatarRequest.Result) {
  case OvrAvatarManager.HasAvatarRequestResultCode.HasAvatar:
    hasFoundAvatar = true;
    requestComplete = true;
    continueRetries = false;
    yield return AutoRetry_LoadUser(true);
    break;

  case OvrAvatarManager.HasAvatarRequestResultCode.HasNoAvatar:
    requestComplete = true;
    continueRetries = false;
    OvrAvatarLog.LogDebug("User has no avatar. Falling back to local avatar.",
                          logScope, this);
    break;

 ... //other scenarios
}

// As a fallback, load local preset avatar
// Source:SampleAvatarEntity.cs
private void LoadLocalAvatar() {
  if (!HasLocalAvatarConfigured) {
    OvrAvatarLog.LogInfo("No local avatar asset configured", logScope, this);
    return;
  }

  var path = new string[1];
  foreach (var asset in _assets) {
    bool isFromZip = (asset.source == AssetSource.Zip);

    string assetPostfix = 'some_postfix'; //see SampleAvatarEntity.cs for full implementation.

    path[0] = asset.path + assetPostfix;
    if (isFromZip) {
      LoadAssetsFromZipSource(path);
    } else {
      LoadAssetsFromStreamingAssets(path);
    }
  }
}

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