Horses disappearing in 1.6.1

Hi guys,

I have a minor problem that is currently annoying everyone on my server. After capturing/corralling horses, they tend to disappear after a certain amount of time. It may or may not coincide with the loading/unloading of chunks but that's a reasonable theory, I think.

CoreProtect has no information about their situation - they simply.. disappear

My only suspicion at the moment is an exception coming from the server (but I'm not sure that it's related to this issue). The exception I believe is being generated by Multiverse-core:

Code:java

22:05:42 [SEVERE] Could not pass event CreatureSpawnEvent to Multiverse-Core v2.4-b527
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
        at org.bukkit.craftbukkit.v1_6_R1.event.CraftEventFactory.callCreatureSpawnEvent(CraftEventFactory.java:240)
        at net.minecraft.server.v1_6_R1.World.addEntity(World.java:923)
        at net.minecraft.server.v1_6_R1.PathfinderGoalBreed.g(PathfinderGoalBreed.java:78)
        at net.minecraft.server.v1_6_R1.PathfinderGoalBreed.e(PathfinderGoalBreed.java:45)
        at net.minecraft.server.v1_6_R1.PathfinderGoalSelector.a(PathfinderGoalSelector.java:104)
        at net.minecraft.server.v1_6_R1.EntityInsentient.be(EntityInsentient.java:418)
        at net.minecraft.server.v1_6_R1.EntityLiving.c(EntityLiving.java:1390)
        at net.minecraft.server.v1_6_R1.EntityInsentient.c(EntityInsentient.java:305)
        at net.minecraft.server.v1_6_R1.EntityAgeable.c(EntityAgeable.java:87)
        at net.minecraft.server.v1_6_R1.EntityAnimal.c(SourceFile:32)
        at net.minecraft.server.v1_6_R1.EntityHorse.c(EntityHorse.java:686)
        at net.minecraft.server.v1_6_R1.EntityLiving.l_(EntityLiving.java:1253)
        at net.minecraft.server.v1_6_R1.EntityInsentient.l_(EntityInsentient.java:147)
        at net.minecraft.server.v1_6_R1.EntityHorse.l_(EntityHorse.java:714)
        at net.minecraft.server.v1_6_R1.World.entityJoinedWorld(World.java:1354)
        at net.minecraft.server.v1_6_R1.World.playerJoinedWorld(World.java:1335)
        at net.minecraft.server.v1_6_R1.World.tickEntities(World.java:1223)
        at net.minecraft.server.v1_6_R1.WorldServer.tickEntities(WorldServer.java:480)
        at net.minecraft.server.v1_6_R1.MinecraftServer.t(MinecraftServer.java:572)
        at net.minecraft.server.v1_6_R1.DedicatedServer.t(DedicatedServer.java:226)
        at net.minecraft.server.v1_6_R1.MinecraftServer.s(MinecraftServer.java:486)
        at net.minecraft.server.v1_6_R1.MinecraftServer.run(MinecraftServer.java:419)
        at net.minecraft.server.v1_6_R1.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NullPointerException
        at com.onarandombox.MultiverseCore.listeners.MVEntityListener.creatureSpawn(MVEntityListener.java:117)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
        ... 26 more
 

Is anyone else having problems with horses disappearing? Prior to the horse update I've had one user complain that his saddled pig had disappeared a couple times in a similar manner.


Thanks in advance.

 

Chojun This was a frequently talked about topic on my server too. Horses would appear to 'despawn' for certain players, but not for others. After checking my console, I discovered a map corruption was messing with the map, and probably the horses too. After fixing the map, there have been no more complaints about the issue.

Another cause could have been the bugs:

Both of these bugs were fixed in yesterdays 1.6.2 update. So you might want to try running that build for a few days and see if the problems still continue.

 

Note that even if you do run the dev builds, they are COMPLETELY unsupported.

 

Chojun
It looks like an NPE... Why are you using an old version on multiverse?
On a side note, entities despawn when players are over 128 block from them, and the release for craftbukkit 1.6.1 has not been released yet.

 

"Fixed horses starting to suffocate when touching walls"

I upgraded to 1.6.2 and immediately saw a horse die from standing next to some blocks of sand.

 

Hi Guys, thanks for the responses.

xDeeKay
I haven't seen anything in the console related to map corruption. In fact, the server was running fine without any warnings/errors/etc except for the one listed above. What did you do to resolve the map corruption?

At any rate, I'll give the 1.6.2 dev update a go and see if it resolves anything. But like I said, the horses aren't suffocating, core protect doesn't have any information about the horses dying. They're basically just de-spawning.

xTrollxDudex
I'm using the latest 'AB' of Multiverse-Core which is admittedly quite old. I hadn't considered using a dev build of mv-core but I'll give that a shot. Do you have supporting info on the entities de-spawning?


Thanks in advance

 

Chojun
The most recent release was 2.5. It isn't even a dev build. But it is built for 1.4.5 so I would really consider a different multiworld plugin or use a dev build.

I've read on he minecraft wiki about mob behavior but I think they took that down or it wasn't the wiki