Re: execute() doesn't return

It seems like your robot is running into an infinite loop somehow. This 
could be due to e.g. an event handler being called, that calls some method, 
that triggers the exact same event handler or something else.
The onSkippedTurn() is not called this will only happen if one execute() is 
executed at time X and another execute() is executed at time Y, and the 
delta time between X and Y is too big. Then you receive onSkippedTurn() as 
a notification that you have a serious issue with your robot. When 
execute() never returns due to an infinite loop, the SkippedTurnEvent never 
happens.

I recommend that you add some out.println (e.g. out.print("#") ) statements 
in your run method - especially in loops. You could also add a 
out.println("onScannedRobot") as the first line for your onScannedRobot() 
handler and do this for every event handler you have.
If you are lucky you should be able to see which out.print statements that 
are called too many times. :-)

As alternative, you can send the robot (source file) to me at fnl (at) 
users.sourceforge.net. Then I will have a look. I will not share the source 
code with anybody and only keep it temporarily while debugging it.

Cheers,
- Flemming


Den onsdag den 12. marts 2014 21.03.46 UTC+1 skrev Jeff Van Epps:
>
> I've started working on an AdvancedRobot, and I find that sometimes the 
> call to execute() just doesn't return. I've got an out.println() right 
> after that which never prints. So far I haven't found a way to trigger it 
> to happen. Other robots in the battle continue executing. onSkippedTurn() 
> isn't being called. What I've asked it to do on the turn when it hangs is 
> sometimes as simple as just a setTurnGunRight(20). Sometimes, when the next 
> round begins, I see this printed:
>
> java.lang.ThreadDeath
> at java.lang.Thread.stop(Thread.java:758)
> at 
> net.sf.robocode.host.security.RobotThreadManager.stop(RobotThreadManager.java:189)
> at 
> net.sf.robocode.host.security.RobotThreadManager.stopSteps(RobotThreadManager.java:171)
> at 
> net.sf.robocode.host.security.RobotThreadManager.forceStop(RobotThreadManager.java:142)
> at 
> net.sf.robocode.host.security.RobotThreadManager.waitForStop(RobotThreadManager.java:127)
> at 
> net.sf.robocode.host.proxies.HostingRobotProxy.waitForStopThread(HostingRobotProxy.java:151)
> at 
> net.sf.robocode.host.proxies.BasicRobotProxy.waitForStopThread(BasicRobotProxy.java:43)
> at net.sf.robocode.battle.peer.RobotPeer.waitForStop(RobotPeer.java:1670)
> at net.sf.robocode.battle.Battle.finalizeRound(Battle.java:386)
> at net.sf.robocode.battle.BaseBattle.run(BaseBattle.java:206)
> at java.lang.Thread.run(Thread.java:662)
> SYSTEM: This robot has been stopped.  No score will be generated.
>
> I'm not starting any threads of my own, or doing any file/network I/O. 
> Really it's nothing but some trig, not that complicated.
>
> Any notions?
>
> Version 1.9.0.0 Running on *Java 1.6.0_26 (64-bit)* by Sun Microsystems 
> Inc.
> on Ubuntu 13.10 64-bit
>
>
>
>

-- 
You received this message because you are subscribed to the Google Groups "robocode" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
For more options, visit https://groups.google.com/d/optout.