teavm VS Unreal.js

Joel from our team worked on the initial prototype for WASI support in TeaVM (https://github.com/konsoletyper/teavm/pull/610), and we temporarily forked before the WASI support made it to the official repo.

Good reminder to deprecate that now!

A number of concerns with the viability of the current WASM GC are covered here (Google translation to English):

https://habr-com.translate.goog/ru/articles/757182/?_x_tr_sl...

and the original article:

https://habr.com/ru/articles/757182/

This is from the author of TeaVM, who has 10 years of experience getting Java and JVM code to run efficiently in the browser. https://teavm.org/

TeaVM's existing transpilation of Java to JavaScript performs well (using the browsers JS GC). It will be interesting to see if WASM GC matures to the point where it is even faster.

Uses this apparently: https://github.com/konsoletyper/teavm

How does this compare to say the TeaVM (https://github.com/konsoletyper/teavm) which I know only has "experimental" WASM support at the moment?

For Java, no WASM file is requested. Maybe the Java code was transpiled to JavaScript, perhaps using TeaVM.

>> It's not like you can take a random JAR and convert it to WASM.

Maybe you can:

TeaVM is an ahead-of-time compiler for Java bytecode that emits JavaScript and WebAssembly that runs in a browser. Its close relative is the well-known GWT. The main difference is that TeaVM does not require source code, only compiled class files. Moreover, the source code is not required to be Java, so TeaVM successfully compiles Kotlin and Scala.

https://teavm.org/

I have never had an opportunity to try out TeaVM, but it seems promising.

For a fast, lightweight, Java-based front-end, try TeaVM and its Flavour toolkit:

https://teavm.org/

It is easy to get started by using the maven archtetype, there's an tutorial in Java Magazine here:

https://blogs.oracle.com/javamagazine/post/java-in-the-brows...

With TeamVM and Flavour you get a full front-end SPA framework that lets you code business logic in Java, and pair that with HTML and CSS to make components.

To see what it can do, check out Wordii, a fast-paced 5-letter word game:

> Someone will make the JRE run on WASM

https://teavm.org/

Minecraft contains some native dependencies, though; you'll need something like https://copy.sh/v86/ or https://bellard.org/jslinux/ with the right operating system image to run it in browser.

There are some links on the GitHub page: https://github.com/ncsoft/Unreal.js

This reminds me of Unreal.js, which allows you to write games with Unreal Engine in JavaScript (V8, to be specific): https://github.com/ncsoft/Unreal.js.

If you wanted to, sure. remake a game engine in js. But remember the hoops you had to go through to make it less efficient than it needs to be. Don't start wondering if you fall behind in graphics quality, number of objects capable of running physics, or framerate.

I have also found a plugin for unreal called unreal.js (https://github.com/ncsoft/Unreal.js).

For example, here is Unreal.js's example for extending the 3rd Person Template: https://github.com/ncsoft/Unreal.js/wiki/Third-Person-Template-in-Unreal.js