Solved Custom Event is not working

Discussion in 'Plugin Development' started by ToastHelmi, Aug 13, 2013.

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  1. Offline

    ToastHelmi

    This is my Custom event
    the @Getter anotation generrates a getMethod while combiling @setter a setter method
    Code:java
    1. package me.ToastHelmi.Event;
    2.  
    3. import java.util.List;
    4.  
    5. import lombok.Getter;
    6. import lombok.Setter;
    7. import me.ToastHelmi.GrandThaftMinecart;
    8.  
    9. import org.bukkit.entity.Player;
    10. import org.bukkit.event.Cancellable;
    11. import org.bukkit.event.Event;
    12. import org.bukkit.event.HandlerList;
    13. import org.bukkit.metadata.FixedMetadataValue;
    14. import org.bukkit.metadata.MetadataValue;
    15.  
    16. public class WantedLevelChangeEvent extends Event implements Cancellable
    17. {
    18.  
    19. boolean Cancelled;
    20. private static final HandlerList handlers = new HandlerList();
    21.  
    22. @Getter private Player player;
    23.  
    24. public WantedLevelChangeEvent(Player p)
    25. {
    26. this.player = p;
    27. }
    28. public int getWantedLevel()
    29. {
    30. return Integer.valueOf((int)getMetadata(player, "WantedLevel")/16);
    31. }
    32. public void setMetadata(Player player, String key, Object value){
    33. player.setMetadata(key,new FixedMetadataValue(GrandThaftMinecart.getInctance(),value));
    34. }
    35. public Object getMetadata(Player player, String key){
    36. List<MetadataValue> values = player.getMetadata(key);
    37. for(MetadataValue value : values){
    38. if(value.getOwningPlugin().getDescription().getName().equals(GrandThaftMinecart.getInctance().getDescription().getName())){
    39. return value.value();
    40. }
    41. }
    42. return null;
    43. }
    44. @Override
    45. public HandlerList getHandlers()
    46. {
    47. // TODO Auto-generated method stub
    48. return handlers;
    49. }
    50. public static HandlerList getHandlerList()
    51. {
    52. return handlers;
    53. }
    54. @Override
    55. public boolean isCancelled()
    56. {
    57. // TODO Auto-generated method stub
    58. return Cancelled;
    59. }
    60. @Override
    61. public void setCancelled(boolean arg0)
    62. {
    63. Cancelled = arg0;
    64.  
    65. }
    66.  
    67.  
    68. }
    69.  


    and this the listener where i want to call my event

    Code:java
    1. package me.ToastHelmi.Police;
    2.  
    3. import java.util.List;
    4. import java.util.Random;
    5.  
    6. import me.ToastHelmi.GrandThaftMinecart;
    7. import me.ToastHelmi.Event.WantedLevelChangeEvent;
    8. import me.ToastHelmi.GTMSettings.Settings;
    9.  
    10. import org.bukkit.Bukkit;
    11. import org.bukkit.ChatColor;
    12. import org.bukkit.entity.Entity;
    13. import org.bukkit.entity.Player;
    14. import org.bukkit.entity.Zombie;
    15. import org.bukkit.event.EventHandler;
    16. import org.bukkit.event.EventPriority;
    17. import org.bukkit.event.Listener;
    18. import org.bukkit.event.entity.CreatureSpawnEvent;
    19. import org.bukkit.event.entity.EntityCombustEvent;
    20. import org.bukkit.event.entity.EntityDeathEvent;
    21. import org.bukkit.event.entity.EntityTargetLivingEntityEvent;
    22. import org.bukkit.event.entity.PlayerDeathEvent;
    23. import org.bukkit.inventory.ItemStack;
    24. import org.bukkit.metadata.FixedMetadataValue;
    25. import org.bukkit.metadata.MetadataValue;
    26.  
    27.  
    28. @SuppressWarnings("deprecation")
    29. public class PoliceListener implements Listener
    30. {
    31.  
    32.     public PoliceListener()
    33.     {
    34.     }
    35.  
    36.     @EventHandler(priority = EventPriority.HIGHEST)
    37.     public void onCreatureSpawn(CreatureSpawnEvent event)
    38.     {
    39.         if ((event.getEntity() instanceof Zombie))
    40.         {
    41.             final Zombie z = (Zombie) event.getEntity();
    42.             Random r = new Random();
    43.             z.setCustomNameVisible(true);
    44.             z.setCustomName(ChatColor.DARK_BLUE
    45.                     + "Officer "
    46.                     + Settings.getNames().get(
    47.                             r.nextInt(Settings.getNames().size())));
    48.             z.setBaby(false);
    49.             z.getEquipment().setItemInHandDropChance(1F);
    50.             if(Settings.getBoots()!=0)
    51.             {
    52.                 z.getEquipment().setBoots(new ItemStack(Settings.getBoots()));
    53.             }
    54.             if(Settings.getLeggings()!=0)
    55.             {
    56.                 z.getEquipment().setLeggings(new ItemStack(Settings.getLeggings()));
    57.             }
    58.             if(Settings.getChestplate()!=0)
    59.             {
    60.                 z.getEquipment().setChestplate(new ItemStack(Settings.getChestplate()));
    61.             }
    62.             if(Settings.getHelmet()!=0)
    63.             {
    64.                 z.getEquipment().setHelmet(new ItemStack(Settings.getHelmet()));
    65.             }
    66.             if(Settings.getWeapon()!=0)
    67.             {
    68.                 z.getEquipment().setItemInHand(new ItemStack(Settings.getWeapon()));
    69.             }
    70.  
    71.         }
    72.     }
    73.  
    74.     @EventHandler(priority = EventPriority.HIGHEST)
    75.     public void onZombieTargetPlayer(EntityTargetLivingEntityEvent event)
    76.     {
    77.         if ((event.getEntity() instanceof Zombie)
    78.                 && event.getTarget() instanceof Player)
    79.         {
    80.             final Player p = (Player) event.getTarget();
    81.             final Zombie z = (Zombie) event.getEntity();
    82.             System.out.println(z.getEntityId()+" set target");
    83.             // parameter = gröser der Box in der die entitis geholt werden...
    84.             List<Entity> nearBys = z.getNearbyEntities(15,15,15);
    85.  
    86.             int maxWanted = 0;
    87.             for (Entity e : nearBys)
    88.             {
    89.                 if (e instanceof Player)
    90.                 {
    91.                     Player NBP = (Player) e;
    92.                     if ((int)getMetadata(NBP, "WantedLevel") > maxWanted)
    93.                     {
    94.                         System.out.println("4 targed changed");
    95.                         maxWanted = (int)getMetadata(NBP, "WantedLevel");
    96.  
    97.                         event.setTarget(NBP);
    98.  
    99.                     }
    100.                 }
    101.             }
    102.  
    103.             if ((int)getMetadata((Player)event.getTarget(),"WantedLevel") <= 0)
    104.             {
    105.                 event.setCancelled(true);
    106.                 return;
    107.             }
    108.         }
    109.     }
    110.     @EventHandler(priority = EventPriority.HIGH)
    111.     public void onPlayerDeath(PlayerDeathEvent event)
    112.     {
    113.         if (event.getEntity() instanceof Player)
    114.         {
    115.             Player z = (Player) event.getEntity();
    116.             if (z.getKiller() != null)
    117.             {
    118.                 int i =0;
    119.                 if( getMetadata(z.getKiller(), "WantedLevel") != null)
    120.                     i =  (int)getMetadata(z.getKiller(), "WantedLevel");
    121.                 i+=Settings.getKillPlayerFactor();
    122.                 if(i>100)
    123.                     i = 100;
    124.                 setMetadata(z.getKiller(), "WantedLevel",i);
    125.             }
    126.         }
    127.     }
    128.     @EventHandler(priority = EventPriority.HIGH)
    129.     private void onOfficerDeath(EntityDeathEvent event)
    130.     {
    131.         if (event.getEntity() instanceof Zombie)
    132.         {
    133.             Zombie z = (Zombie) event.getEntity();
    134.             if (z.getKiller() != null)
    135.             {
    136.                 int i =0;
    137.                 if( getMetadata(z.getKiller(), "WantedLevel") != null)
    138.                     i =  (int)getMetadata(z.getKiller(), "WantedLevel");
    139.                 i+=Settings.getKillZombieFactor();
    140.                 if(i>100)
    141.                     i = 100;
    142.                 setMetadata(z.getKiller(), "WantedLevel",i);
    143.             }
    144.         }
    145.     }    
    146.  
    147.  
    148.     @EventHandler(priority = EventPriority.HIGH)
    149.     private void onCombust(EntityCombustEvent event)
    150.     {
    151.         if (event.getEntity() instanceof Zombie)
    152.         {
    153.             event.setCancelled(true);
    154.         }
    155.     }
    156.  
    157.  
    158.     public void setMetadata(Player player, String key, Object value)
    159.     {    player.setMetadata(key,new FixedMetadataValue(GrandThaftMinecart.getInctance(),value));
    160.           if(key.equals("WantedLevel"))
    161.           {
    162.             GrandThaftMinecart.getInctance().getServer().getPluginManager().callEvent(new WantedLevelChangeEvent(player));
    163.           }
    164.     }
    165.     public Object getMetadata(Player player, String key)
    166.     {
    167.           List<MetadataValue> values = player.getMetadata(key);  
    168.           for(MetadataValue value : values){
    169.              if(value.getOwningPlugin().getDescription().getName().equals(GrandThaftMinecart.getInctance().getDescription().getName())){
    170.                 return value.value();
    171.              }
    172.           }
    173.         return null;
    174.     }
    175.  
    176.  
    177.  
    178. }
    179.  


    amd what I Get is
    Code:
    01:32:21 at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
01:32:21 at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
01:32:21 at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
01:32:21 at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
01:32:21 at org.bukkit.craftbukkit.v1_6_R2.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:329)
01:32:21 at net.minecraft.server.v1_6_R2.EntityInsentient.dropDeathLoot(EntityInsentient.java:199)
01:32:21 at net.minecraft.server.v1_6_R2.EntityLiving.die(EntityLiving.java:757)
01:32:21 at net.minecraft.server.v1_6_R2.EntityLiving.damageEntity(EntityLiving.java:709)
01:32:21 at net.minecraft.server.v1_6_R2.EntityMonster.damageEntity(EntityMonster.java:39)
01:32:21 at net.minecraft.server.v1_6_R2.EntityZombie.damageEntity(EntityZombie.java:127)
01:32:21 at net.minecraft.server.v1_6_R2.EntityHuman.attack(EntityHuman.java:884)
01:32:21 at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:1121)
01:32:21 at net.minecraft.server.v1_6_R2.Packet7UseEntity.handle(SourceFile:36)
01:32:22 at net.minecraft.server.v1_6_R2.NetworkManager.b(NetworkManager.java:296)
01:32:22 at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:116)
01:32:22 at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
01:32:22 at net.minecraft.server.v1_6_R2.DedicatedServerConnection.b(SourceFile:30)
01:32:22 at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:590)
01:32:22 at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:226)
01:32:22 at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:486)
01:32:22 at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:419)
01:32:22 at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
01:32:22 Caused by: java.lang.NullPointerException
01:32:23 at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:469)
01:32:23 at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
01:32:23 at me.ToastHelmi.Police.PoliceListener.setMetadata(PoliceListener.java:162)
01:32:23 at me.ToastHelmi.Police.PoliceListener.onOfficerDeath(PoliceListener.java:142)
01:32:23 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
01:32:23 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
01:32:23 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
01:32:23 at java.lang.reflect.Method.invoke(Method.java:601)
01:32:23 at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
01:32:23 ... 21 more
    please help
     
    ToastHelmi, Aug 13, 2013
    #1
  2. Offline

    newboyhun

    newboyhun, Aug 13, 2013
    #2
  3. Offline

    ToastHelmi

    updatet the post
     
    ToastHelmi, Aug 13, 2013
    #3
  4. Offline

    newboyhun

    ToastHelmi
    GrandThaftMinecart.getInctance() =>> null
     
    newboyhun, Aug 13, 2013
    #4
  5. Offline

    Syd

    newboyhun ToastHelmi
    The exception is fired in the SimplePluginManager, not in the PoliceListener, so this one can't be null.

    Line 469 in SimplePluginManager is
    Code:
    RegisteredListener[] listeners = handlers.getRegisteredListeners();
    while handlers is
    Code:
    HandlerList handlers = event.getHandlers();
    So, handlers is null, which means event.getHandlers() returns null for some reason.
    However, getHandlers() returns clearly handlers, which is static and initialized.
     
    Syd, Aug 13, 2013
    #5
  6. Offline

    ToastHelmi

    newboyhun
    strange i just changed to
    Code:java
    1.     public void setMetadata(Player player, String key, Object value)
    2.     {   
    3.         GrandThaftMinecart plugin = GrandThaftMinecart.getInctance();
    4.         player.setMetadata(key,new FixedMetadataValue(plugin,value));
    5.           if(key.equals("WantedLevel"))
    6.           {
    7.             if(plugin != null)
    8.             plugin.getServer().getPluginManager().callEvent(new WantedLevelChangeEvent(player));
    9.             else
    10.                 System.out.println("null");
    11.           }
    12.     }


    and it worked dont know what the problem with call
    GrandThaftMinecart.getInctance()
    twice but now it dosend mather
     
    ToastHelmi, Aug 13, 2013
    #6
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