Tried to embed jme into javafx and had some problems

icyboxs · May 31, 2023, 1:05pm

A simple attempt to embed javafx in jme

And when it runs, it finds that nothing happens.

If I use breakpoints and debug, I get a window (I guess it’s multi-threading but I don’t know exactly what’s wrong I don’t understand Java multi-threading very well).

If anyone has the time and is willing, please guide me and give me some tips

Pavl_G · May 31, 2023, 2:23pm

Note: The jmeinjfx shipped with the jMonkeyBuilder is no longer maintained anymore and has some hidden bugs.

I recommend using this:

Maintained by @tlf30.

icyboxs · May 31, 2023, 4:33pm

Thank you for your reply

Can I get the jme screen to draw in the Javafx control?
Can you give me a simple example

Ali_RS · June 1, 2023, 8:20pm

Yes, I think you can do it using this library:

Here is an example I guess

Disclaimer: I have not used it myself and do not know how it works!

icyboxs · June 2, 2023, 3:58pm

github.com

jMonkeyEngine-archive/jfx-11-jme-embedded-jayfella-github/blob/1e6d7fc936563697a8d74169154ed094aa4d1184/src/main/java/com/jayfella/jfx/embedded/SimpleJfxApplication.java#L106


      
              return started;
          }
          
          
/**
           * Indicates that the second of two phases are complete. The engine is initialized.
           * The engine is waiting for the class to set initialized = true.
           * This usually occurs in the users initApp() method.
           *
           * @return whether or not the engine is initialized.
           */
          public boolean isInitialized() {
              return initialized;
          }
          
          
public boolean isJmeThread() {
              return Thread.currentThread() == jmeThread;
          }
          
          
public AppSettings getSettings() {
              return settings;
          }

github.com

jMonkeyEngine-archive/jfx-11-jme-embedded-jayfella-github/blob/1e6d7fc936563697a8d74169154ed094aa4d1184/src/main/java/com/jayfella/jfx/embedded/SimpleJfxApplication.java#LL95C1-L95C1


      
          public boolean isStarted() {

github.com

jMonkeyEngine-archive/jme-in-jfx-jayfella-github/blob/110067ab0e2f0d6e60220bc5eee0e882f0dbcb7b/src/main/java/com/myapp/MyJavaFxApplication.java#L54


      
          
          
    // we have a specific "start" method because due to LWJGL3 behavior this method will never return.
              // If we called this method in the constructor, it would never get constructed, so we have seperated
              // the blocking line of code in a method that gets called after construction.
              jfxApp.get().start();
          
          
}, "LWJGL Render").start();
          
          
// wait for the engine to initialize...
          // You can show some kind of indeterminate progress bar in a splash screen while you wait if you like...
          while (jfxApp.get() == null || !jfxApp.get().isInitialized()) {
              Thread.sleep(10);
          }
          
          
// The application is never going to change from hereon in, so we can just reference the actual value.
          // Just remember that any calls to JME need to be enqueued from app.enqueue(Runnable) if you are not on the JME
          // thread (e.g. you're on the JavaFX thread). Any calls to JavaFx need to be done on the JavaFX thread, or via
          // Plaform.runLater(Runnable).
          SimpleJfxApplication app = jfxApp.get();
          
          
primaryStage.setTitle("Test JME Embedded in JavaFx");

The variable used in this archive is “started” to determine if jme is ready instead of “initialized”, but in the demo it is “initialized” which causes the program to not display the window

So I’ve figured out why my jfx doesn’t show

tlf30 · June 3, 2023, 3:01am

@icyboxs I just replied to you PM.

For reference for everyone else. I did a lot of experimenting with this late 2020.
I have an example of my efforts here: jfx-in-jme-in-jfx/src/main/java/io/tlf/jme/jfxtest at main · tlf30/jfx-in-jme-in-jfx · GitHub

I don’t remember how well it works, but I do know it had some issues. Iirc I think there is an offset from where the viewport is and where it thinks it is for input.

My current jme jfx bindings have the necessary code to replicate this example if I remember correctly, and can be used to accomplish jfx in jme in jfx.