Robowiki - User contributions [en]

Talk:Robocode/My First Robot

2010-05-25T22:17:58Z

Giants27: /* Compiling */

== HELP! ==

I am an experienced 13 year old Java programmer, and I decided to try this, (it looks VERY cool) but when I try to compile the simple default program it gives many errors. I figured out pretty quickly; it can't find the robocode package. I need to like set the classpath, but I can't directly do this. >=( Robocode SHOULD do this on its own...

:Ok, I figured it out on my own... It's different on a mac. [[User:Awesomeness|Awesomeness]] 01:01, 13 March 2009 (UTC)

Robocode can't simply do everything for you, becasuse it is a Java setting issue, if you are using Eclipse you can set it trough the Build Path Settings, on the Libraries tab, select Add External Jars, search for your Robocode instalation directory (default in Windows is C:\robocode) under that directory there should be a libs directory, there are four jars, you might not need all of them, but I recommend you add all of them for now.

If you are compiling from the console you should do something like
<pre>
javac -cp C:\robocode\libs\cachecleaner.jar;C:\robocode\libs\codesize.jar;C:\robocode\libs\robocode.jar;C:\robocode\libs\roborumble.jar ...
</pre>

To set the classpath, but I really recommend using an advanced IDE like Eclipse (or whatever you prefer, ie. NetBeans). Hope it helps, and welcome to Robocode. --[[User:Zyx|zyx]] 08:55, 11 March 2009 (UTC)

Actually Zyx, you don't need the cachecleaner, codesize or roborumble jars ofr compiling bots. --[[User:Rednaxela|Rednaxela]] 12:44, 11 March 2009 (UTC)

Maybe this is easier?
<pre>
javac -cp C:\robocode\libs\*; ...
</pre>
it load every library in <code>/libs</code> automatically. (ripped from Robocode 1.7 startup files) » <span style="font-size:0.9em;color:darkgreen;">[[User:Nat|Nat]] | [[User_talk:Nat|Talk]]</span> » 13:14, 11 March 2009 (UTC)

Yes [[User:Rednaxela|Rednaxela]], you are right that for compilation there is no point to include any jar that is not robocode.jar. I didn't know that the * wildcard worked but is good to know [[User:Nat|Nat]]. But all my disinformation comes from Eclipse, I added the 4 jars there and he knows what to use :-). --[[User:Zyx|zyx]] 19:44, 11 March 2009 (UTC)

I don't think the * will work for .jar files. It works for .class files only. Well, that was my experience several years ago, when I last used Windows. --[[User:Skilgannon|Skilgannon]] 19:49, 11 March 2009 (UTC)
* I had to test it, it works as [[User:Nat|Nat]] posted it, but if it is missing that ; after the * it tries to use the jar files as input files and of course fails. But bottom line is that it does work. --[[User:Zyx|zyx]] 00:29, 12 March 2009 (UTC)
* It should work because robocode 1.7 later than 1.7.0.1 use this method. I myself just add robocode.jar to eclipse :-) » <span style="font-size:0.9em;color:darkgreen;">[[User:Nat|Nat]] | [[User_talk:Nat|Talk]]</span> » 00:51, 12 March 2009 (UTC)

== Compiling ==

I can create my robot without a problem but when I go to compile it, it doesn't do anything and won't let me save it. Thoughts? I can set up battles (can't save them either...) and don't have the javac file which I think may be what's causing this. If it is, where is a good place to download it? I'm using Windows XP and I don't know if it's a 32-bit or 64-bit.--[[User:Giants27|Giants27]] 21:52, 24 May 2010 (UTC)

I think you want to get the JDK for Windows here: [http://java.sun.com/javase/6/webnotes/install/index.html#windows]. If you don't know, I'd go with 32-bit. I thought Robocode would setup the "jikes" compiler if you didn't have javac installed, but I'm not sure. Once you have the JDK installed, (I'd probably restart Robocode, then) go to Robot Editor, Compiler > Options > Reset Compiler and it should find javac. Btw, are you getting an error when you try to compile, or what happens? You might also find some good info at [[Robocode/System Requirements]] or in [[:Category:Tutorials]]. Good luck! --[[User:Voidious|Voidious]] 21:59, 24 May 2010 (UTC)

When I go to compile, nothing happens and it just sits on the robot editing screen. It did install "jikes" but for whatever reason it still does nothing when I go to compile. I'll go try to install that.--[[User:Giants27|Giants27]] 22:07, 24 May 2010 (UTC)

I installed JDK from [http://java.sun.com/javase/downloads/widget/jdk6.jsp here] but, the robot editor still doesn't detect javac and I still can't save anything.--[[User:Giants27|Giants27]] 22:20, 24 May 2010 (UTC)

Not that this has any relevancy to the discussion but why don't we include Javac instead of Jikes with robocode. I believe javac is open-sourced here: [http://openjdk.java.net/groups/compiler/]. --[[User:Exauge|Exauge]]

Anything?--[[User:Giants27|Giants27]] 22:17, 25 May 2010 (UTC)

Talk:Robocode/My First Robot

2010-05-24T22:20:04Z

Giants27: /* Compiling */

Talk:Robocode/My First Robot

2010-05-24T22:07:02Z

Giants27: /* Compiling */

Talk:Robocode/My First Robot

2010-05-24T21:52:52Z

Giants27: /* Compiling */ new section