Re: [xmlvm-users] xmlvm newbie needs help

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Erez,

simply running ant only compiles the XMLVM jar. Demos are not compiled.
To compile Xokoban go to the demo/android/xokoban folder and run "ant
compile". This will compile Xokoban. Note that you need the Android SDK
installed and configured in $XMLVM/properties/local.properties.
Compiling Xokoban using the provided ant script will also produce the
missing R class.

-- Wolfgang

On 29.03.11 09:38, Erez D wrote:
> thanks for replying,
>
> I am  an N900 user, a goal of mine is to have many more applications
> for me and any other N900 users.
> As I saw XMLVM can be used to translate android apps to iphone, i
> thought i could use XMLVM to translate android apps to the N900 as well.
> The N900 runs on a pseudo debian system, so making a native c+gtk or
> c+qt app will probably suffice.
>
> as a first step, i wanted to see if i could translate an application (
> and took xokoban as an example ) to run under ubuntu, and later the  N900.
>
> I read the XMLVM documentation, I got the idea, but some
> examples/tutorials could have helped me.
>
>
> i did 'ant clean' and then 'ant' and everything was built ok,
> then i did:
> cd xmlvm/trunk/xmlvm/demo/android/xokoban/src/org/xmlvm/demo/xokoban
> javac Ball.java
>
> and got:
>
> Ball.java:27: cannot find symbol
> symbol: class MovableGamePiece
> public class Ball extends MovableGamePiece {
>                           ^
> Ball.java:28: cannot find symbol
> symbol  : class GameView
> location: class org.xmlvm.demo.xokoban.Ball
>     public Ball(GameView view, int tileSize, int x, int y) {
>                 ^
> Ball.java:34: package R does not exist
>             return R.drawable.ball_20;
>                     ^
> Ball.java:36: package R does not exist
>             return R.drawable.ball_30;
>                     ^
> Ball.java:38: package R does not exist
>             return R.drawable.ball_100;
>
> still need help getting started here.
>
>
> thanks,
> erez.
>
> On Mon, Mar 28, 2011 at 5:59 PM, Paul Poley <bay...@gm...
> <mailto:bay...@gm...>> wrote:
>
>     XMLVM will translate Java code to Objective-C or C, but not C++. 
>     This is good though since C++ is an extension of C.
>
>     As you say you are a C++ programmer looking to translate Xokoban
>     to C++, I'm not sure XMLVM is what you're looking for.  I.e. the
>     idea is to write code in Java & it will work the same running as
>     Objective-C or C++, but you shouldn't have to look at the
>     Objective-C or C++ code, barring some exceptions.  If you do look
>     at the generated code, you can easily tell a human didn't write
>     it, although with some XMLVM knowledge, you can read & understand it.
>
>     That to say, if you are interested in writing C++, XMLVM is
>     probably not the solution.  If however, you are interested in
>     writing Java, you've come to the right place.
>
>     To answer your question, Java source files are *.java.  When you
>     compile them using "javac", they are converted into *.class. 
>     Those byte code files (think of them in some ways similar to
>     *.exe) are what the JVM executes in Java proper & what XMLVM uses
>     to translate to another language.
>
>     So if you are interested in XMLVM, I recommend first acquainting
>     yourself with Java proper.
>
>     Possibly to get you started though, run "ant clean" first to get
>     rid of some old files that may be causing 'package R does not exist'.
>
>     Thanks,
>     Paul
>
>
>     On Mon, Mar 28, 2011 at 4:16 AM, Erez D <ere...@gm...
>     <mailto:ere...@gm...>> wrote:
>
>         I have just checked out xmlvm, and want to use it to compile
>         android app to c++
>         I read the documentation, but still have problems
>         understanding what to do.
>
>         i have generated dist/xmlvm.jar using ant and openjdk
>
>         BTW, I'm a c++ programmer, with small experiance  in java.
>
>         For example, i need help compiling xokoban (from xmlvm demo)
>         to c++
>         1. according to the docs, xmlvm's input is *.class, but
>         xokoban files are *.java.  do i just use javac to compile
>         xokoban.java to xokoban.class (this will make java bytcode. is
>         it ok or dex is needed ? (if so, how do i generate dex ?) )
>         2. trying 'javac Ball.java' from xokoban's directory: i get
>         many error messages of missing stuff, like 'package R does not
>         exist'. is this because of the order i am compiling or am i
>         missing somthing.
>
>
>         can someone give me a small tutorials of how to generate c/cpp
>         from xokoban (ubuntu 10.10 64 bit).
>
>         thanks,
>         erez.
>
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