Comments on: Games, Physics, JavaFX #devoxx

By: JavaFX links of the week, January 18 // JavaFX News, Demos and Insight // FX Experience

Sun, 17 Jan 2010 20:12:09 +0000

[...] I’ve seen Phys2D used in JavaFX, with Richard Bair and Jasper Potts having used it in their Devoxx game, and Simon Morris using it for some demos as [...]

By: JOKe

JOKe — Sat, 12 Dec 2009 19:52:38 +0000

awesome

By: Jasper Potts

Jasper Potts — Thu, 26 Nov 2009 08:56:06 +0000

It does seem to cache them, I am not sure how to force them to update. I would have assumed a new file with new timestamp would have done it. I will have to investigate. You can clear the cache in Java Preferences on Mac and Java control panel on windows.

By: Ryan de Laplante

Ryan de Laplante — Thu, 26 Nov 2009 03:24:12 +0000

I’m having the same problem after pressing New Game many many times. Does Java Web Start cache the jars so I did not get the fixed version?

By: Jasper Potts

Jasper Potts — Wed, 25 Nov 2009 16:29:50 +0000

Fixed, see comment below

By: Jasper Potts

Jasper Potts — Wed, 25 Nov 2009 16:29:10 +0000

Sorry I uploaded new Jar and broke things. It was compiled against the wrong JavaFX version. It is now fixed and should work. I had to clear my webstart cache for some annoying reason to get it to pickup the new jar.

By: Olivier Allouch

Olivier Allouch — Wed, 25 Nov 2009 15:46:25 +0000

The window never opens and I get a “java.lang.NoSuchMethodError: com.sun.javafx.runtime.location.SBECL.init” in the log file (Vista Java 6 update 15)

By: Mark D

Mark D — Wed, 25 Nov 2009 14:49:17 +0000

Tried to load the game and got this error:

Java Web Start 1.6.0_13
Using JRE version 1.6.0_13 Java HotSpot(TM) Client VM
User home directory = C:\Users\mdonahue
—————————————————-
…
—————————————————-
java.lang.NoSuchMethodError: com.sun.javafx.runtime.location.SBECL.(ILjava/lang/Object;Ljava/lang/Object;[Ljava/lang/Object;Z)V
at game.Game$_SBECL.(Game.fx:195)
at game.Game$_SBECL.(Game.fx:195)
at game.Game.(Game.fx:21)
at game.Main.javafx$run$(Main.fx:17)

Haven’t read any comments so dont know if anyone else has seen this, but thought you’d like to get the report

By: Jasper Potts

Jasper Potts — Wed, 25 Nov 2009 13:28:01 +0000

Done, I have uploaded new version with leek fixed I hope. It recreates the physical world and all physical objects on each new game now. Some how it was leaking huge amounts of Vector2f objects, like 300 million after 10 games or so. Now we throw away the complete tree which lets GC clean it all up easily. If we had time to rewrite physics library avoiding all object creation on something that needs to run at 60 times a second seems to make sense.

By: Richard Bair

Richard Bair — Wed, 25 Nov 2009 02:55:26 +0000

Hey Ryan, thanks for the Report. Jasper and Stephen Chin did some profiling today and it looks like somehow the physics model was leaking really badly. It might have been a listener that we didn’t release or something deeper in the engine, not sure. But it seems if we chuck everything and rebuild everything on New Game the issue goes away. Maybe Jasper will have a new version up tomorrow.