Re: Recording RoboCode battles from Java API

Hi Flemming

Thank you for your answer, it was helpful :)

However, it didn't really solve my problem... maybe it's better if i 
explain you my use case a little:

I would like to trigger a set of battles on my server every time i push 
to a git repository. The battles are run using a CI system that, 
ideally, will give me the artifacts of the recorded battles once the 
process is complete. Using the graphic interface is not an option here.

As you suggested i could just create several Java processes triggering 
the Robocode CLI with different battle files. This solution would work 
for sure, but I would like to know it we could do something better (it 
reloads a JVM after every battle, definitely not optimal). All i need is 
something like this example 
http://robocode.sourceforge.net/docs/robocode/robocode/control/package-summary.html 
but able to record the battles to a br file.

Is it possible?

Cheers
Andrea

On 03/06/2016 11:53 PM, fnl wrote:
> Hi Andrea,
>
> First of all, the robocode.control.RobocodeEngine does not support 
> saving the games. It should be added to the RobocodeEngine.
>
> Note that you should only use classes that are a part of the public 
> API. That is robocode.* classes like e.g. robocode.control.
> You are not supposed to "hack" into the internals of Robocode by 
> accessing net.sf.robocode classes. Those are internal and could change 
> at any time.
> Code based on internal classes might work now, but not in the future. 
> Only the public API is guaranteed to be backward compatible.
>
> What you could do instead is enabling "auto recording" in Robocode 
> from the UI by selecting Options -> Preferences -> Common Options -> 
> "Enable auto recording ..."
>
> This feature will automatically record the battles and store these 
> into the /battles directory under the /robocode directory.
> A record will get a name like 
> "20160306-233521-sample.RamFire-sample.Corners.zip.br" (br stands for 
> Battle Record)
>
> You can replay this in Robocode (Battle -> Open Record).
>
> Alternatively, you could use the Robocode command-line option 
> <http://robowiki.net/wiki/Robocode/Console_Usage>s, where you can set 
> '-battle <battle file>' to run a specific battle specification and 
> also set '-recordXML' in order to record the battle in XML format.
> You can replay the records using '-replay <record file>' .
>
> Note that you could run Robocode in a Java Process 
> <https://docs.oracle.com/javase/7/docs/api/java/lang/Process.html>. If 
> you do this, you should use robocode.sh as the first command-line 
> argument and the add the command-line options, you need. :-)
>
> I hope this helps?
>
> Kind regards
> - Flemming
>
> Den fredag den 4. marts 2016 kl. 15.24.17 UTC+1 skrev Andrea Giardini:
>
>     Hello everyone
>
>     I'm trying to record battles from the java API. I would like to
>     trigger battles inside Java and then, at the end of the run, be
>     able to see the replay only of the battles i'm interested in.
>
>     This is my code:
>
>     -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>     import robocode.control.*;
>     import net.sf.robocode.battle.events.BattleEventDispatcher;
>     import net.sf.robocode.io.Logger;
>     import net.sf.robocode.recording.BattleRecordFormat;
>     import net.sf.robocode.recording.RecordManager;
>     import net.sf.robocode.serialization.SerializableOptions;
>     import net.sf.robocode.settings.SettingsManager;
>
>     public class BattleRunner {
>
>         // Path configuration
>         public static String roboCodePath =
>     "/home/andrea/git/AttProgIA_2016/RoboCode";
>
>         private static String recordFile = "/tmp/testingLOL.xml";
>
>         // Recording
>         private static SettingsManager settingsManager = new
>     SettingsManager();
>         private static BattleEventDispatcher battleEventDispatcher =
>     new BattleEventDispatcher();
>         private static RecordManager recordManager = new
>     RecordManager(settingsManager);
>
>         public static void main(String[] args) {
>
>
>             // Disable log messages from Robocode
>             RobocodeEngine.setLogMessagesEnabled(false);
>
>             // Create the RobocodeEngine
>             RobocodeEngine engine = new RobocodeEngine(new
>     java.io.File(roboCodePath));
>
>
>             // Setup the battle specification
>
>             int numberOfRounds = 5;
>             BattlefieldSpecification battlefield = new
>     BattlefieldSpecification(800, 600); // 800x600
>             RobotSpecification[] selectedRobots =
>     engine.getLocalRepository("sample.RamFire,sample.Corners");
>
>             BattleSpecification battleSpec = new
>     BattleSpecification(numberOfRounds, battlefield, selectedRobots);
>
>             // *********************
>             Logger.setLogListener(battleEventDispatcher);
>             recordManager.attachRecorder(battleEventDispatcher);
>
>
>             // Show the Robocode battle view
>             engine.setVisible(false);
>
>             // *********************
>
>             // Run our specified battle and let it run till it is over
>             engine.runBattle(battleSpec, true); // waits till the
>     battle finishes
>
>             // Save the recording
>
>             recordManager.saveRecord(recordFile,
>     BattleRecordFormat.XML, new SerializableOptions(false));
>             // Cleanup our RobocodeEngine
>             engine.close();
>
>             // Make sure that the Java VM is shut down properly
>             System.exit(0);
>          }
>      }
>
>     -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>     Unfortunately all i get it's:
>
>     -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>     No robocode.properties. Using defaults.
>     Exception in thread "Application Thread"
>     java.lang.NullPointerException
>         at
>     net.sf.robocode.recording.RecordManager.saveRecord(RecordManager.java:344)
>         at BattleRunner.main(BattleRunner.java:57)
>
>     -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>     Which i really don't understand... battles run properly (i tried
>     to print the results and it works correctly), but as soon as i try
>     to save the record i receive this null pointer exception. It looks
>     like the recordInfo variable inside RecordManager it's not
>     initialized properly...
>
>     Can you give me a hint? It's really annoying, and unfortunately i
>     can't find any documentation or examples online...
>
>     Thank you
>
>     Andrea
>

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