Startup problems

Hello all,

Ever since the new 1.1 RB and the new EventHandlers i've been unable to figure out why my console is erroring and how i can fix it and wondered if anybody would be able to shed some light onto it.

It uses worldguard and wondered if it could be to do with that being outdated?

Error:

Code:

2012-02-01 19:19:14 [SEVERE] Could not load 'plugins\AnimalProtect.jar' in folder 'plugins': 
java.lang.reflect.InvocationTargetException
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
 at java.lang.reflect.Constructor.newInstance(Unknown Source)
 at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:136)
 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.<init>(CraftServer.java:132)
 at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigurationManager.java:52)
 at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148)
 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
 at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)
Caused by: java.lang.NullPointerException
 at me.damo1995.AnimalProtect.EntityDamageListener.<init>(EntityDamageListener.java:25)
 at me.damo1995.AnimalProtect.Main.<init>(Main.java:12)
 ... 13 more

Main.class:

Code:

package me.damo1995.AnimalProtect;

import java.util.logging.Logger;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;
public class Main extends JavaPlugin{
 Logger log = Logger.getLogger("Minecraft");
 public final EntityDamageListener DamageListener = new EntityDamageListener(this);
 public void onEnable() {
 
  this.logMessage("Enabled");
  getServer().getPluginManager().registerEvents(DamageListener, this);
 }
 public void onDisable() {
  this.logMessage("Disabled");
 }
 protected void logMessage(String msg){
  PluginDescriptionFile pdFile = this.getDescription();
  this.log.info(pdFile.getName() + " " + pdFile.getVersion() + ": " +msg);
  
 }

}
 

EntityDamageListener.class:

Code:

package me.damo1995.AnimalProtect;

import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.entity.Arrow;
import org.bukkit.entity.Entity;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.EntityDamageByEntityEvent;
import org.bukkit.event.entity.EntityDamageEvent;
import com.sk89q.worldedit.bukkit.BukkitUtil;
import com.sk89q.worldguard.bukkit.WorldGuardPlugin;
import com.sk89q.worldguard.domains.DefaultDomain;
import com.sk89q.worldguard.protection.regions.ProtectedRegion;
public class EntityDamageListener implements Listener {
 public static Main plugin;
 public EntityDamageListener(Main instance) {
  plugin = instance;
 }
   WorldGuardPlugin wg = (WorldGuardPlugin)plugin.getServer().getPluginManager().getPlugin("WorldGuard");
@EventHandler  
      public void onEntityDamage(EntityDamageEvent e) { if (e.isCancelled()) return;
        if (!(e instanceof EntityDamageByEntityEvent)) return;
        EntityDamageByEntityEvent event = (EntityDamageByEntityEvent)e;
        if (!(event.getDamager() instanceof Player)) return;
        Player player = (Player)event.getDamager();
        LivingEntity le = (LivingEntity)event.getEntity();
        Entity arrow = ((EntityDamageByEntityEvent) event).getDamager();
        Location loc = le.getLocation();
        Arrow a = (Arrow) e.getEntity();
        for(ProtectedRegion region: wg.getRegionManager(loc.getWorld()).getApplicableRegions(BukkitUtil.toVector(loc)))
        {
       //  player.sendMessage("Region " + region.getId());//
         DefaultDomain members = region.getMembers();
         DefaultDomain owners = region.getOwners();
         for(@SuppressWarnings("unused") String member: members.getPlayers());
        if (!(event.getEntity() instanceof LivingEntity)) return;
        if ((le instanceof Player)) return;
        if(members.getPlayers().contains(player.getName()) || owners.getPlayers().contains(player.getName()) || player.hasPermission("worldguard.region.define")){
         e.setCancelled(false);   
         
        }
        else{event.setCancelled(true); player.sendMessage(ChatColor.RED + "[AnimalProtect]: You cannot kill mobs here!");}
        if(arrow instanceof Arrow && le instanceof Player){
         if(members.getPlayers().contains(a.getShooter()) || owners.getPlayers().contains(a.getServer())){
          e.setCancelled(false);
          
         }
         else
          e.setCancelled(true);
         player.sendMessage("Nope.avi");
         
        }
      
        
    
 
     }
  }
}

Thanks in advanced
Damo

 

well you inistatiate the damagelistener BEFORE the main class gets constructed. So instatiate the damagelistener in the onEnable()-method should work.

 

OK, So i tried

Code:

package me.damo1995.AnimalProtect;

import java.util.logging.Logger;
import org.bukkit.event.Listener;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;
public class Main extends JavaPlugin{
 Logger log = Logger.getLogger("Minecraft");

 public void onEnable() {
  EntityDamageListener DamageListener = new EntityDamageListener(this);
  this.logMessage("Enabled");
  getServer().getPluginManager().registerEvents(DamageListener, this);
 }
 public void onDisable() {
  this.logMessage("Disabled");
 }
 protected void logMessage(String msg){
  PluginDescriptionFile pdFile = this.getDescription();
  this.log.info(pdFile.getName() + " " + pdFile.getVersion() + ": " +msg);
  
 }

}

and receved

Code:

2012-02-01 19:52:59 [SEVERE] Error occurred while enabling AnimalProtect v0.1 (Is it up to date?): null
java.lang.NullPointerException
 at me.damo1995.AnimalProtect.EntityDamageListener.<init>(EntityDamageListener.java:25)
 at me.damo1995.AnimalProtect.Main.onEnable(Main.java:16)
 at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:231)
 at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:1057)
 at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:379)
 at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:191)
 at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:174)
 at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:357)
 at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:344)
 at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:175)
 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
 at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Its possibley me being stupid but i dont know...

Anybody else?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Try and remove the this.logMessage stuff, e.g annotate it out. And run it again. See if that is what causes the error

 

Tried this and it still did the same.

After some tinkering i have found its down to this

Code:

WorldGuardPlugin wg = (WorldGuardPlugin)plugin.getServer().getPluginManager().getPlugin("WorldGuard");

All i need to do now is figure out how to fix it -.-

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

I can't really see that in code but if that line is outside of the constructor, then there's you problem. I would just declare the variable before without any value and then setting it in the constructor of the listener.