https://github.com/samuel310/flutter_unity_widget_web

Flutter unity widget for embedding unity in flutter web apps.
https://github.com/samuel310/flutter_unity_widget_web

flutter flutterweb unity unity3d web widget

Last synced: about 1 month ago
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Flutter unity widget for embedding unity in flutter web apps.

• Host: GitHub
• URL: https://github.com/samuel310/flutter_unity_widget_web
• Owner: Samuel310
• License: bsd-3-clause
• Created: 2022-03-14T07:49:55.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2022-05-25T06:32:22.000Z (over 2 years ago)
• Last Synced: 2024-09-27T17:01:39.148Z (about 2 months ago)
• Topics: flutter, flutterweb, unity, unity3d, web, widget
• Language: Dart
• Homepage:
• Size: 477 KB
• Stars: 6
• Watchers: 2
• Forks: 4
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        


Flutter unity widget for embedding unity in flutter web apps. Now you can render unity webGL build in a Flutter web app. Also enables two way communication between flutter web and unity.

## Setup

1. Place the exported unity webGL build folder inside web folder.

![Web folder structure](https://github.com/Samuel310/flutter_unity_widget_web/blob/main/assets/fs.png?raw=true "Location to place exported unity web folder")

2. Modify the index.html file inside unity webGL build folder.

   - Add following script in index.html.

     ```javascript

     let globalUnityInstance;

     window["receiveMessageFromUnity"] = function (params) {

       window.parent.postMessage(params, "*");

     };

     window.parent.addEventListener("flutter2js", function (params) {

       const obj = JSON.parse(params.data);

       globalUnityInstance.SendMessage(obj.gameObject, obj.method, obj.data);

     });

     ```

     index.html file after adding the above script.

     ![index.html file image](https://github.com/Samuel310/flutter_unity_widget_web/blob/main/assets/index1.png?raw=true "index.html will look like this after adding the above script")

   - Add following script in index.html.

     ```javascript

     window.parent.postMessage("unity_loaded", "*");

     globalUnityInstance = unityInstance;

     ```

     index.html file after adding the above script.

     ![index.html file image](https://github.com/Samuel310/flutter_unity_widget_web/blob/main/assets/index2.png?raw=true "index.html will look like this after adding the above script")

## Usage

```dart

import 'package:flutter/material.dart';

import 'package:flutter_unity_widget_web/flutter_unity_widget_web.dart';

class UnityScreen extends StatefulWidget {

  const UnityScreen({Key? key}) : super(key: key);

  @override

  State createState() => _UnityScreenState();

}

class _UnityScreenState extends State {

  late UnityWebController _unityWebController;

  @override

  Widget build(BuildContext context) {

    return UnityWebWidget(

      url: 'http://localhost:${Uri.base.port}/unity/index.html',

      listenMessageFromUnity: _listenMessageFromUnity,

      onUnityLoaded: _onUnityLoaded,

    );

  }

  @override

  void dispose() {

    _unityWebController.dispose();

    super.dispose();

  }

  void _listenMessageFromUnity(String data) {

    if (data == 'load_next_scene') { // any message emitted from unty.

      _unityWebController.sendDataToUnity(

        gameObject: 'GameWindow',

        method: 'LoadNextScene',

        data: '0', // data sent to unity from flutter web.

      );

    }

  }

  void _onUnityLoaded(UnityWebController controller) {

    _unityWebController = controller;

    setState(() {});

  }

}

```

## API

- `onUnityLoaded(UnityWebController controller)` (Unity to flutter web binding and listener when unity is loaded)

- `listenMessageFromUnity(String data)` (Listen for message sent from unity to flutter web)

- `sendDataToUnity(String gameObject, String method, String data)` (Allows you to send date from flutter web to untiy)

## Features and bugs

Please file feature requests and bugs at the [issue tracker][tracker].

[tracker]: https://github.com/Samuel310/flutter_unity_widget_web/issues