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archive development-discussion-jme2
1

Hello together,



maybe there is someone that may help me.

I want to jumpstart into jme but I struggled with the setup:



Currently installed is

  • WinXP SP3
  • Eclipse (last recent version 3.4.2)
  • TortoiseSVN (last recent version 1.6.2)



    One question:

    What to do to get a basic project running ? Goal: To have an APPLET in the end displying some 3d graphics.



    REALLY RUNNING sample code available ?



    Thanks even for little help!



    Best regards

    /HB
2

The wiki has tutorials on getting jME set up. Once you have it, there is a package jmetest with tons of working example code.



Is there a specific problem that’s holding you up?

3
Alric said:

Is there a specific problem that's holding you up?


Yes, unfortunately I am unskilful with setting up eclipse. I tried to follow some descriptions found here but failed because of different reasons:
* Sometimes it seems that the linux installation is used
* ANT setup should be done (how?)
* The descriptions at all seem to be inaccurate in several meanings (old eclipse version?)

I have downloaded the svn tree of the engine.

And now I need to generate a project within eclipse which has no unsolved bindings, errors or whatever.

Does someone have eventually a stripped down project framework - with maybe only the init and an empty game loop ... which I can directly use by IMPORT into eclipse ?

... ugent help needed ...
4

Hi Hardbreaker,



maybe this zipped project could be useful…



it contains an Eclipse project with all the necessary

libs needed to compile and run the provided example class.



Ok, some goodies: the provided Ant file could be used to:


  • build the application jar
  • build the junit test classes jar (see src/test directory - there is an example junit class)
  • execute junit test suite and create junit report and emma code coverage report
  • create javadoc with a nice custom doclet



    Let me know if this works for you.


5

Hi foxat,



thanks a lot for reacting so fast !!!





I got the following result on the console:



14.05.2009 15:31:30 com.jme.app.BaseGame start

INFO: Application started.

14.05.2009 15:31:30 com.jme.system.PropertiesGameSettings <init>

INFO: PropertiesGameSettings created

14.05.2009 15:31:30 com.jme.system.PropertiesGameSettings load

WARNUNG: Could not load properties. Creating a new one.

14.05.2009 15:31:30 class org.foo.bar.CreateObject start()

SCHWERWIEGEND: Exception in game loop

java.lang.UnsatisfiedLinkError: no lwjgl in java.library.path

 at java.lang.ClassLoader.loadLibrary(Unknown Source)

at java.lang.Runtime.loadLibrary0(Unknown Source)

at java.lang.System.loadLibrary(Unknown Source)

at org.lwjgl.Sys$1.run(Sys.java:72)

at java.security.AccessController.doPrivileged(Native Method)

at org.lwjgl.Sys.doLoadLibrary(Sys.java:65)

at org.lwjgl.Sys.loadLibrary(Sys.java:81)

at org.lwjgl.Sys.<clinit>(Sys.java:98)

at org.lwjgl.opengl.Display.<clinit>(Display.java:129)

at com.jme.system.lwjgl.LWJGLPropertiesDialog$ModesRetriever.run(LWJGLPropertiesDialog.java:682)

at com.jme.app.AbstractGame.getAttributes(AbstractGame.java:252)

at com.jme.app.BaseGame.start(BaseGame.java:67)

at org.foo.bar.CreateObject.main(CreateObject.java:34)

14.05.2009 15:31:30 com.jme.app.BaseSimpleGame cleanup

INFO: Cleaning up resources.

14.05.2009 15:31:30 com.jme.system.lwjgl.LWJGLDisplaySystem <init>

INFO: LWJGL Display System created.

14.05.2009 15:31:30 com.jme.app.BaseGame start

INFO: Application ending.









Building with right click on "build.xml" and "run as/1 Ant build" brings following error:

Buildfile: D:ProjectsEclipseJavaQoodexbuild.xml

clean:

  [delete] Deleting directory D:ProjectsEclipseJavaQoodexdist

init:

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdist

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistclasses_test

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistclasses

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistclasses_instrumented

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistreportjunit

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistreportemma

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistreportemmasrc

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistreportfindBugs

    [mkdir] Created dir: D:ProjectsEclipseJavaQoodexdistreportpmd

build.main:

_javac:

    [echo]

    [echo] ================================================================================

    [echo] Compiling application classes …

    [echo] ================================================================================

    [echo]  compile src:      D:ProjectsEclipseJavaQoodexsrcmain

    [echo]  output classes:  D:ProjectsEclipseJavaQoodexdistclasses

    [echo]  output jar:      D:ProjectsEclipseJavaQoodexdist/jmeStartProject.jar

    [echo]  classpath refid:  classpath.common

    [echo]

    [echo]  debug:            true

    [echo]  nowarn:          true

    [echo]  optimize:        off

    [echo]  verbose:          false

    [echo]   

    [javac] Compiling 1 source file to D:ProjectsEclipseJavaQoodexdistclasses



BUILD FAILED

D:ProjectsEclipseJavaQoodexbuild.xml:88: The following error occurred while executing this line:

D:ProjectsEclipseJavaQoodexconfantcompilation.xml:46: Error running javac.exe compiler



Total time: 297 milliseconds

6

You should execute the example class inside the eclipse IDE, because it contains the correct settings for the classPath and lwjgl native library.

lwjgl is a Java wrapper + native OS library for the OpenGL implementation provided by your OS / gfx driver.

See the Eclipse .classpath file: it points to the win32 implementation

 Ooops… ok, it seems you are working with Windows, so this setting should be ok …



<classpathentry kind="lib" path="lib/lwjgl/lwjgl.jar">
  <attributes>
    <attribute name="org.eclipse.jdt.launching.CLASSPATH_ATTR_LIBRARY_PATH_ENTRY" value="jmeStartProject/lib/lwjgl/native/windows"/>
    </attributes>
</classpathentry>



Anyway, to change / reset this setting (if you are using linux or a mac), read the "Configure the jME Project" chapter @
http://www.jmonkeyengine.com/wiki/doku.php?id=setting_up_eclipse_to_build_jme

So, inside Eclipse:

a) select the CreateObject java class from Package Explorer
b) click the right mouse button
c) "Run As" / "Java application"

Provided Ant file is used only to compile and create the application jar ... not to run its classes  :D
7

add this to the build.xml file:



<!--
   -  Execute the class specified by ${targetClass} property
   -->
<target name="execute">
  <property name="targetClass" value="org.foo.bar.CreateObject"/>
  <property name="targetOS"    value="windows"/>

  <java
    fork         = "true"
    classpathref = "classpath.test"
    classname    = "${targetClass}">
    <jvmarg value="-Djava.library.path=${basedir}/lib/lwjgl/native/${targetOS}/"/>
  </java>
</target>



from the shell (cmd.exe):


ant build execute



8

OK - thank you very much!!!



It runs now - not as an applet but as a full screen application.



As I am new here in this field I have made several mistakes:



First: I only have the normal JAVA jre6 installed.

This was the reason why I couldn't get ANT running. It always told me that "tools.jar" was not found. On my whole system was no "tools.jar". Then I realized that I sould download and install the development thing. I installed the latest version which is now "jdk1.6.0_13" and voil

9
hardbreaker said:

First: I only have the normal JAVA jre6 installed.
This was the reason why I couldn't get ANT running. It always told me that "tools.jar" was not found.


yes, the jre doesn't provide the javac compiler (javac executable and tools.jar library). The full JDK does.

P.S.
I suggest you to spend a bit of time with Eclise IDE before to start with jme...  this could simplifying the things a bit ...

Good work !