java.lang.NoClassDefFoundError: de/lessvoid/nifty/input/mouse/MouseInputEvent

Troubleshooting gui
1

I wanted the Nifty sources so I downloaded all the JAR’s from their site.



de.lessvoid.nifty.input.mouse.MouseInputEvent isn’t in there. Anyone know why nifty 1.3 from jMonkey has this class but nifty 1.3 from nifty doesn’t?



Thanks

2

Because this class was removed from Nifty 4 months ago according to that commit http://nifty-gui.git.sourceforge.net/git/gitweb.cgi?p=nifty-gui/nifty;a=commit;h=9e0d4535e5b893c5528ae8dca5911e55cb7c1c5d



You seem to have a old nifty-1.3-SNAPSHOT.jar somewhere in your classpath …

3

Yeah, from the jMonkey platform…



java.lang.NoClassDefFoundError: de/lessvoid/nifty/input/mouse/MouseInputEvent

at com.jme3.niftygui.InputSystemJme.onMouseMotionEventQueued(InputSystemJme.java:103)

at com.jme3.niftygui.InputSystemJme.forwardEvents(InputSystemJme.java:163)

at de.lessvoid.nifty.Nifty.update(Nifty.java:227)

at com.jme3.niftygui.InputSystemJme.endInput(InputSystemJme.java:91)

at com.jme3.input.InputManager.processQueue(InputManager.java:551)

at com.jme3.input.InputManager.update(InputManager.java:600)

at com.jme3.app.Application.update(Application.java:453)

at web.mcmasters.jmonkey.Game.update(Game.java:69)

at com.jme3.system.lwjgl.LwjglAbstractDisplay.runLoop(LwjglAbstractDisplay.java:158)

at com.jme3.system.lwjgl.LwjglDisplay.runLoop(LwjglDisplay.java:203)

at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:221)

at java.lang.Thread.run(Unknown Source)



In any case, nifty 1.3 from nifty doesn’t have this class, but in the nifty 1.3 in jmonkey it exists.

4

No, its only in the *-SNAPSHOT.jar files, not in the current svn.

5

So instead of using the jars under jmonkeyplatform/libs that the alpha 4 SDK installed, I should use the jars under http://jmonkeyengine.googlecode.com/svn/trunk/engine/libs and check out http://jmonkeyengine.googlecode.com/svn/trunk/engine/src to build jmonkey?

6

No, in the latest svn version the libraries are the “final” 1.3 libs, so you just need to update to nightly. When alpha-4 came out they were not available yet, so it has the snapshots.

7

I’m not sure I understand exactly. You can develop against stock alpha 4 or you can develop against the nightlies. If you develop against stock alpha 4 then you will be developing against 3 month old code and libraries… so some things will have changed since then.

8

I understand that… I tried the nightlies once and had other problems.



How far off is the beta?

9

visible on the horizon