LibGDX Bytecoder backend

Support any libgdx project with any JVM language (Kotlin, Groovy, Scala) on the web!

Discontinued

Please consider supporting https://github.com/xpenatan/gdx-teavm, that project looks as the most viable option to use libgdx-kotlin in the browser as of now.

We have a working demo available, and are working hard to make it work for most libGDX apps out of the box!

Current build status:

Table of Contents

• About the Project
  • Built With
  • Testing JavaScript API's
• Getting Started
  • Installation
• Contact
• Acknowledgements

About The Project

We are making a libGDX backend to run any libgdx app (whether written in Java or another JVM language) on the web using WebAssembly or JavaScript.
Bytecoder transpiles byte code to wasm32 or js.

The status is that a simple libgdx app now can run on the web! See our demo.

Built With

• Libgdx
• Kotlin
• Bytecoder

Testing JavaScript APIs

We are testing JavaScript apis in the web-demo project. Audio and Webgl are now ready, in future things like keyboard, mouse interaction when we implement them in Libgdx.

Having a dedicated project to test those apis, makes the Bytecoder backend implementation just dedicated to porting the JS calls to Kotlin.

Getting Started

To get a local copy up and running follow these simple steps.

Installation

Clone the repo

git clone https://github.com/squins/gdx-backend-bytecoder.git

Libgdx sample app (gradle)

The sample app contains all libgdx features that have been port. JAR files are provided to Bytecoder maven project using local Maven repo.

Steps to build:

cd libgdx-sample-app
./gradlew publishToMavenLocal

Which backend to use

The sample app supports js and wasm.

This can be set in the properties of the gdx-backend-bytecoder-example pom:

<bytecoder-mavenplugin.backend>

with 1 of these properties: js or wasm_llvm, default on js.

Gdx-backend-bytecoder project (root path)

Build project

mvn clean install -DskipTests

Run the sample app

Start a webserver in target/bytecoder. We assume port 8096 is used. Content type for .wasm files must be application/wasm and for .js files, text/javascript.

Go to http://localhost:8096

Click the 'Play' button to start the app. When you press it, you will see a red square and hear some music. This comes from the libGDX game written in Kotlin.

Contact

Squins info: Squins

Project Link: Github

Demo link: Demo

Acknowledgements

• Kotlin
• Bytecoder
• Webgl
• Libgdx

Alternatives

gdx-teavm