https://github.com/jonnay/watership-down

Supposed to be a stats/achievements Bukkit plugin, but really it is an example of Clojure Bukkit plugins.
https://github.com/jonnay/watership-down

Last synced: about 7 hours ago
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Supposed to be a stats/achievements Bukkit plugin, but really it is an example of Clojure Bukkit plugins.

• Host: GitHub
• URL: https://github.com/jonnay/watership-down
• Owner: jonnay
• Created: 2012-02-07T15:47:13.000Z (almost 13 years ago)
• Default Branch: master
• Last Pushed: 2012-02-07T16:37:24.000Z (almost 13 years ago)
• Last Synced: 2024-11-21T12:48:39.960Z (2 months ago)
• Language: Clojure
• Homepage:
• Size: 86.9 KB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: Readme.org

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README

        
* Watership Down

  Watership Down is an example of a Bukkit plugin written in Clojure.  It is also endeavoring to be fully functional plugin that lets you

  track the stats of your players, and grant achievements based on those stats.

* Classloader woes

  What is there (which isn't much, mind you) is currently compileable through lein, bundles up a plugin.yml, and sets the classpath in the

  manifest to a shared clojure lib in ../server/lib/.  This is great, but there is a slight problem:

#+begin_example

09:10:17 [SEVERE] Could not load 'plugins/watershipdown-0.1.jar' in folder 'plugins': 

java.lang.ExceptionInInitializerError

	at clojure.lang.Namespace.(Namespace.java:34)

	at clojure.lang.Namespace.findOrCreate(Namespace.java:176)

	at clojure.lang.Var.internPrivate(Var.java:149)

	at net.jonnay.watershipdown.WatershipDown.(Unknown Source)

	at java.lang.Class.forName0(Native Method)

	at java.lang.Class.forName(Class.java:247)

	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131)

	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:285)

	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:200)

	at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:156)

	at org.bukkit.craftbukkit.CraftServer.(CraftServer.java:132)

	at net.minecraft.server.ServerConfigurationManager.(ServerConfigurationManager.java:52)

	at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148)

	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:407)

	at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Caused by: java.lang.RuntimeException: java.io.FileNotFoundException: Could not locate clojure/core__init.class or clojure/core.clj on classpath: 

	at clojure.lang.Util.runtimeException(Util.java:165)

	at clojure.lang.RT.(RT.java:319)

	... 15 more

Caused by: java.io.FileNotFoundException: Could not locate clojure/core__init.class or clojure/core.clj on classpath: 

	at clojure.lang.RT.load(RT.java:430)

	at clojure.lang.RT.load(RT.java:398)

	at clojure.lang.RT.doInit(RT.java:434)

	at clojure.lang.RT.(RT.java:316)

	... 15 more

#+end_example

  

  From what I can glean, this has to do with the class loader.  One option is to bundle a version of clojure with *use-context-classloader*

  set to false, which may work.  (But involves building my own clojure.)  Another option might be to look into the JavaPlugin class, and

  over-ride its behavior, especially with regards to the Java Plugin Loader.

  ( http://jd.bukkit.org/doxygen/d1/ddb/JavaPluginLoader_8java_source.html )  Not sure about that however.

  Yet anotehr option involves using a Java delegate to load the clojure directly (but then, what is the point of compiling to java?)

  Like here http://johnsanda.blogspot.com/2010/11/writing-rhq-plugin-in-clojure.html or even here, which runs clojure through a reader and the evaluator:

  https://groups.google.com/group/clojure/browse_thread/thread/f0c69735c5a9bd03/1e0dced366af9077?lnk=gst&q=webstart&fwc=1&hl=en

  From the Jira ticket here: http://dev.clojure.org/jira/browse/CLJ-260 it looks like we can set the context classloader inside of a

  subclass of javaplugin (probably called ClojurePlugin, funnily enough).  This may have some serious implications with the bukkit

  classloader however.

#+begin_example

Thread.currentThread().setContextClassLoader(loader);

#+end_example

  

* Features, that are coming soon!

  - Stats are recorded based on typical bukkit events

  - When an achievement is earned, an event is posted!

  - If Spout is active, even more events are listened to

  - Uses a SqLite Database, and maybe MySQL too!

  - Dynamic Event listening, if I can make it go!