Re: [xmlvm-dev] Games with LibGDX on iPhone

[Arno P. <ar...@pu...>]

some comments from my side:

- the following works for me with the current HEAD:
   cd xmlvm
   ant
   cd demo/android/xokoban
   ant run-Xcode

- ignore the vtable index -1 messages for now. Should not have
   an impact on the cross-compiled application.

- there are a bunch of tutorials you may also want to try:
   cd tutorial/ios/helloworld/portrait
   ant run-Xcode
   Also look at http://xmlvm.org/tutorial

The general approach for adding new API (such as the one you propose):

- create the Java API in xmlvm/src/xmlvm2objc/compat-lib/java. There
   is no need to provide an implementation.
- run "ant gen-c-wrappers" to create the C wrappers for the new API.
   You can find the wrappers in xmlvm/src/xmlvm2c/compat-lib/iphone
- Implement the wrappers.

For the last item check out the slides in xmlvm/doc/slides for some 
comments on the C backend (in the middle of the slide deck). Also look 
at the extensive inline comments in org_xmlvm_iphone_UIView.m and 
org_xmlvm_iphone_NSObject.m to see the pattern for implementing the 
wrappers.

Let us know if you have further questions.

Arno


On 9/10/11 3:44 PM, Tomás Lázaro wrote:
> Hi,
>
> Thanks for your quick response!
>
> I'm still having trouble with the demos, I did a fresh checkout of the
> xmlvm trunk. The 'ant' command worked fine but 'ant demos' afterwards
> still produces the error with the aforementioned xmls.
>
>     /home/tomas/NetBeansProjects/xmlvm/demo/iphone/ifireworks/nbproject/xmlvm.xml:96:
>     The following error occurred while executing this line:
>     java.io.FileNotFoundException:
>     /home/tomas/NetBeansProjects/xmlvm/demo/iphone/ifireworks/nbproject/*build-xcode.xml*
>     (No such file or directory)
>
>
> There is a total of 8 files inside /xmlvm/demo/ that are named
> *build-Xcode.xml* but should be *build-xcode.xml*.
>
> After fixing those I get these errors:
>
>     -xproject-create:
>           [echo] Creating Xcode project with the C backend.
>           [java] [09/10/11 19:14:07.984]    ERROR: Vtable index for
>     javax.xml.parsers.DocumentBuilder.setErrorHandler is -1!
>           [java]
>           [java] [09/10/11 19:14:07.985]    ERROR: Vtable index for
>     javax.xml.parsers.DocumentBuilder.setEntityResolver is -1!
>           [java]
>           [java] [09/10/11 19:18:39.447]    ERROR: Oh no, XMLVM needs
>     more memory. Try running with -Xmx1G or more.
>
>     -xproject-trim:
>
>     -xproject-updater:
>
>     BUILD FAILED
>     /home/tomas/NetBeansProjects/xmlvm/build.xml:341: The following
>     error occurred while executing this line:
>     /home/tomas/NetBeansProjects/xmlvm/demo/build.xml:54: The following
>     error occurred while executing this line:
>     /home/tomas/NetBeansProjects/xmlvm/demo/android/xokoban/nbproject/xmlvm.xml:96:
>     The following error occurred while executing this line:
>     /home/tomas/NetBeansProjects/xmlvm/demo/android/xokoban/nbproject/build-xcode.xml:85:
>     Src directory does not exist.
>
>
> I'm not sure if there is a problem with 'Src' folder or it is because
> XMLVM ran out of memory. I have a 4GB RAM, I would not mind adding the
> "-Xmx1G" but I just don't know where to put that since it's not for the
> 'ant' process itself... isn't it?
>
> I'm using Ubuntu 64-bit 11.04, Ant 1.8.1, Java 1.6.0_26.
>
> Thanks again!
> Tomás Lázaro
>
> On Sat, Sep 10, 2011 at 7:53 AM, Panayotis Katsaloulis
> <pan...@pa... <mailto:pan...@pa...>> wrote:
>
>
>     On 10 Σεπ 2011, at 1:51 μ.μ., Panayotis Katsaloulis wrote:
>
>>     What you should do first is to implement in XMLVM all the advanced
>>     OpenGL features of iOS you will require.
>
>     Just a comment to make myself clear:
>     I mean to write the Java code which later on the libGDX will use as
>     an API.
>
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