FXyz VS FXGL

"and then a 3D line from there to the 3D sphere. " No, this line segment is also a 2D line. Actually its two lines of different colors, thickness and transparency which gives the illusion of 3D shading. I have a manager which reacts to any camera position/rotation changes by computing a transform of the 3D position of the sphere to a 2D point. The line segment's start x and y are bound to that 2D point. An example of how to do that same dynamic transform but with labels is in FXyz3d: https://github.com/FXyz/FXyz/blob/master/FXyz-Samples/src/main/java/org/fxyz3d/samples/utilities/FloatingLabels.java

The CAD models are slightly simplified versions of our machining models and exported as OBJ. They are more complex and produce more artifacts than hand-crafted models, but with instance sharing it's no issue to display hundreds of actuators simultaneously. Most of the models are 1-10MB, but the Hexapod chassis at the end is an unmodified export with ~150MB. The models are loaded using the OBJ loader bundled with FXyz.

I downloaded javafx from here: https://github.com/AlmasB/FXGL as a zip, extracted it, then went to my project structure and added it to my libraries. For a couple seconds it seems to work, but then I get the error again, and the folder isn't showing up in my external libraries.

Java seems to have gained a second wind in recent years, and the innovation in this ecosystem is speeding up. Java 20 and LTS release 21 are expected to happen this year. RIFE2, an actively-developed pure-Java web framework, has recently caught my attention. Like Javalin, it appears to be built on top of the successful Jetty server. I also started exploring FXGL for building games with Java. Lastly, as concerns over COVID-19 variants wane I expect an increase in Java developers participating in community events. For example, Chicago finally had its first in-person JConf event and the Chicago Java User Group (CJUG) is easing back into in-person events.

Have you checked FXGL? It’s built on top of JavaFX.

You might get some good use out of FXGL, a Java / JavaFX / Kotlin Game Library. It would probably save you implementing some things from scratch. It might not cover everything that you need, but it probably be at least somewhat helpful.

If you don't mind depending on all of JavaFX you could also try: https://github.com/AlmasB/FXGL Haven't tried it myself but seems like an easy way to start making a game. The author is a university lecturer, so there are plenty of tutorials for games. As the other comment said, Compose Desktop would be a nice choice for a chess game, with the added benefit of easy porting to Android in case you're interested in learning it!

I can highly recommend FXGL https://github.com/AlmasB/FXGL to get started building simpler 2d games before looking into 3d engines which can be daunting unless that’s what you are in for. Nice and easy api’s with everything you need as well as lots of example games to learn from.

Sure. See FXGL

GitHub sources: https://github.com/AlmasB/FXGL

Either libGDX (https://libgdx.com) or FXGL (http://almasb.github.io/FXGL/) . libGDX is more complicated and more powerful, FGXL is better suited for simpler games and so easier for beginners, but recently it's development is quite active and more and more features are available.