Robocode / News: Recent posts

Version 1.9.5.2 (24-Oct-2023)

Bugfix:

• Fixed Throwable: java.lang.LinkageError: loader constraint violation: when resolving method issue in the RobotClassLoader.

Version 1.9.5.1 (30-Jul-2023)

Bugfix:

• Fixed ClassCastException with URLClassLoader when accessing ClassLoader.getSystemClassLoader() on Java version newer
  than Java 8 and running with -DNOSECURITY=true.

Improvements

• Updated all .bat, .sh, and .command files so the _JAVA_OPTIONS is now set automatically regardless of the Java
  version.
• Updated dependencies.

Version 1.9.5.0

Please note that you should be aware of which version of Java you are using for running Robocode. Otherwise, Robocode might not start.
You can check this by running this command in a terminal: java -version. If you are running on a Java version older than version 12, you need to uncomment or remove this line in the robocode.bat or robocode.sh file:

shell _JAVA_OPTIONS="-Djava.security.manager=allow"... read more

Version 1.9.4.9 (28-Jan-2023) Fixed "no security" and HiDPI

Bugfixes

• NOSECURITY=true could cause a ClassNotFoundException for the robots.
• Rendering issue on Windows when setting sun.java2d.ddoffscreen=false. Hence, this setting has been removed.
• If the NOSECURITY or EXPERIMENTAL property has been set to true, a warning is now printed out to standard out.
• Re-fix [Bug-394] by actually supporting HiDPI. Thanks to Xor for this fix! :)... read more

Version 1.9.4.8 (29-Nov-2022) Reworked Disabling Security Manager

Bugfixes

• Rendering issues on Windows using accelerated hardware, by setting this Java properties:
  • sun.java2d.d3d=false (turn off use of Direct3D)
  • sun.java2d.ddoffscreen=false (turn of Direct Draw off-screen)
  • sun.java2d.noddraw=true (no use of Direct Draw)
  • sun.java2d.opengl=True
• Adding -source 1.5 to the ECJ compiler options to prevent "...only available if source level is 1.5 or greater"
  error when compiling with ECJ. ... read more

Version 1.9.4.7 (05-Aug-2022) System.getenv support

Changes

• #35 System.getenv is now allowed and can now be called
  without throwing a security exception. Hence, the robot will not be banned from battles when using System.getenv.

Version 1.9.4.6 (15-Jun-2022) The Java 18 support release

Bugfix

• Java 18 fix: Robocode could not run on the newest Java 18 due to the terminally deprecated Security Manager.
  • The Security Manager is now explicitly being allowed to run with the .bat, .sh, and .command files by adding setting this system property:
    -Djava.security.manager=allow.
• Give bots without rank highest priority in the LiteRumble (RoboRumble). Thank you Xor for this fix! :)... read more

Version 1.9.4.5 (22-03-2022)

Bugfix

• Fixed java.io.IOException: Stream Closed when auto-recording is enabled.
• A mystic word on was written to the console.

Version 1.9.4.3 (04-09-2021)

Changes

• Chocolatey installer is now provided for Windows.
• https://community.chocolatey.org/packages/robocode
• Install by choco install robocode
• Roborumble could now override RUMBLE_USER, RUMBLE_PARTICIPANTSURL, RUMBLE_UPDATEBOTSURL, RUMBLE_RESULTSURL, RUMBLE_RATINGSURL via environment variables. Fixed to not clash with system USER env variable.
• Updated ReadMe file.
• Updated link to Java API documentation.... read more

Robocode 1.9.4.2 has been released

This version is a maintenance release that fixes issues with team robots. Read more about it here:
https://robo-code.blogspot.com/2021/05/robocode-1942.html

Happy TeamRobot coding! :)

This release comes with lots of improvements. First and foremost, the old Maven build setup has been replaced with a Gradle build setup, and we moved to use IntelliJ IDEA for developing Robocode. The Robocode artefacts can also be uploaded to Sonatype's Maven Repository using Gradle.

In addition, a bug fix has been made for ramming, but a lot of other improvements were made for easy testability.

And a RoboRumble client has also been published as Docker image as well.... read more

The RoboWiki is currently down. Julian Kent is providing a temporary RoboWiki based on a backup from September running on a Raspberry Pi:
http://robowiki.duckdns.org

A big thanks go to Xor (@bumfo) for the recent fixes and improvements. 😃👍

https://robo-code.blogspot.com/2020/03/robocode-1938.html

This version fixes a problem where robot could not be found when compiled, and problems regarding development versions of robots (marked with a asterix character). Robots are also detected faster under RoboRumble. A security issue with DNS interaction has also been fixed.

https://robo-code.blogspot.com/2019/05/robocode-1936.html

Robocode 1.9.3.5 has just been released, which fixes issues for the RoboRumble and also adds support for developing robots in the Kotlin programming language.

Enjoy Robocoding! :-)

https://robo-code.blogspot.com/2019/03/robocode-1935.html

This release fixes issues with packaging robot teams, handles a visual HiDPI scaling issue, and running more frequent checks with the RoboRumble server.
Read more about it here:
http://robo-code.blogspot.dk/2018/03/robocode-1931.html

Robocode 1.8.1.0 has just been released, which is a maintenance release that fixes the Skipped Turns issues among other issues. :-)
Enjoy!
http://robo-code.blogspot.dk/2013/03/robocode-1810.html

Robocode 1.7.4.4 has been released Read the details here:
http://robo-http://robo-code.blogspot.dk/2012/11/robocode-1744.html

Robocode 1.7.4.3 has been released
Read the details here:
http://robo-code.blogspot.dk/2012/11/robocode-1743_17.html

Read the details here:
http://robo-code.blogspot.dk/2012/08/robocode-1742.html

Read more about it here:
http://robo-code.blogspot.com/2012/07/robocode-1741.html

Version 1.7.3.6
(29-Apr-2012)

---

= Bugfixes =
* Bug [3519547] - RoboRumble client has infinite timeout. Default connection timeout, read timeout and session timeout have been set to 10 seconds.

= New features =
* A new config file has been added for RoboRumble in the roborumble directory in the robocode directory named roborumble.properties. with this config file it is possible to configure the connection timeout, read timeout and session timeout used when downloading robots and uploading results.
* Req [3506263] - Mac ... start with icon and name... read more

Version 1.7.3.5
(11-Mar-2012)

---

= Bugfixes =
* Bug [3468437] - Package of team fails to load in team battles.
* Fixed minor issue where the Robot Packager tells that a NanoBot can be 250 bytes and a MiniBot 750 bytes, when these must be lesser than 250 and 750 bytes.

Read the details here:

http://robo-code.blogspot.com/2011/12/robocode-1734.html

Version 1.7.3.3
(05-Nov-2011)

---

= Bugfixes =
* Bug [3400398] - Unable to change drawing color in .NET (C#)
* Bug [3409705] - Package name allows bad chars.
* Bug [3406423] - Installer throws NumberFormatException on Linux 3.0.
* Bug [3409844] - "About" window colors are awful.
* Bug [3376538] - out.write(int) uses up allocated printing quickly.

= Changes =
* The layout of the about box has been completely redesigned.
* If running on Java 1.6+, OS/system based font antialiasing will be enabled.
* Upgraded to Maven 2.2.1 for building Robocode. Cleaned up the build, improved the speed, and got rid of issue with building and testing every twice.
* Upgraded Eclipse Compiler for Java (ECJ) to version 3.7.
* Upgraded jni4net (Java <-> .NET bridge) to version 0.8.6.0