Game has to be fully initialized for Net to work?

[Ruth]

This code does not work as I hoped:

Platform plat = new JavaPlatform.Headless(new JavaPlatform.Config());

plat.net().get("http://google.com").onSuccess((result) -> System.out.println(result));

plat.start()

It seems loop is noop for Headless but even if I overwrite it, that won't activate Net-functionality:

        JavaPlatform.Headless plat = new JavaPlatform.Headless(new JavaPlatform.Config()) {
            @Override
            protected void loop() {
                while (true) {
                    System.out.println("loop!");
                    try {
                        Thread.sleep(10);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        };

// This code works as expected

Platform plat = new LWJGLPlatform(new LWJGLPlatform.Config());

plat.net().get("http://google.com").onSuccess((result) -> System.out.println(result));

plat.start()

Is there a technical reason to bind services like Net, Json, etc. to a running Platform and not allow Headless?

[Ruth]

In earlier versions of PlayN I used:

new JavaNet(null) or new JsonImpl() as workarounds.

[Michael Bayne]

There needs to be a game loop running for JavaNet to work. It does the HTTP request on a background thread and then dispatches the result back on the main game thread. But Headless has no game loop because it would not know when to stop the game loop. I guess I could make a separate version of Headless that ran a loop and then you had to manually call stop() on it to say "I'm done."

What's the use case? Unit tests?

On Fri, Aug 11, 2017 at 10:19 AM, 'Ruth' via PlayN <pl...@googlegroups.com> wrote:

In earlier versions of PlayN I used:

new JavaNet(null) or new JsonImpl() as workarounds.

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[Michael Bayne]

Also, you can make your hacky version work by calling emitFrame() inside your fake game loop. So maybe that solves your problem?

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[dieter.h...@googlemail.com]

Yes. Mostly Unit tests but also game-related development of non-graphics parts. Setting up LWJGLPlatform opens an annoying window and it takes quite long for me. About 2 sec.

This slows down development quite a bit and distrubs my thought process, especially when I am "in the flow". The old Java2D mode had a much quicker startup. I guess it probably has its advantages to 'bind' functionality of Net, Json, etc. to the game loop.

I hope you still find time to keep PlayN alive. It is really an impressive piece of software.

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[Ruth]

I only use it for unit tests, that's why I need headless. emitFrames hack fixes it. Thanks!