Flutter

The openbone package is a dart:ffi plugin over the C runtime, compiled with your app, with an OpenBoneWidget that draws, handles touches and plays sound (flutter_soloud). Flutter 3.41+.

Install

flutter pub add openbone

flutter:
  assets:
    - assets/hero/            # hero.obone and the images it references

Export from the editor

Export the project or the runtime data (JSON or Binary) and put it in assets/ with its images.

Play it

import 'package:openbone/openbone.dart';

final controller = OpenBoneController();

OpenBoneWidget.asset(
  'assets/hero/hero.obone',
  controller: controller,
  stateMachine: 'main',       // or animation: 'walk'
  fit: BoxFit.contain,
);

controller.setNumber('speed', 0.8);
controller.setBool('armed', true);
controller.fire('jump');
controller.play('wave', loop: false, track: 1);

Tip

The Export dialog’s Flutter engine pack is an alternative with no native code: a sprite sheet with a Dart widget and a Flame component, or a WebView package running the web player.

Reference: Flutter runtime