Inactive [ADMN/MECH] NoSpawn v1.5.3 - Stop mobs from spawning [1000]

Someone just posted this in my thread for my plugin when its related to yours, i do not think you squashed your multi-threading bugs yet.
http://pastebin.com/d7kt6sTX

Edit:
@xXLupoXx
Just to help I decompiled your plugin and "World.getLivingEntities()" @ Line 72 of MobCounter.java, is not thread safe, change scheduleAsyncRepeatingTask to scheduleSyncRepeatingTask. Trust me this will not add any lag, I have like 3 Synchronous Tasks that call getEntities(There are more Entities than Living Entities) and my plugin causes no lag to the server.

The reason that you get a concurrent modification exception is because Minecraft is either adding or removing an entity on its own thus modifying the LivingEntity Array.

this plugin is aces and is the only thing that stops slimes spawning in and around my citadel.

the limiter is golden too since 800+ mobs would usually spawn on my server. cut it down to 100.

thanks for all your hard work writing this.

Thanks for this tip I've updated and reuploaded it

Code:

java.lang.NullPointerException
        at me.xXLupoXx.NoSpawn.NoSpawnEntityListener.onCreatureSpawn(NoSpawnEntityListener.java:29)
        at org.bukkit.plugin.java.JavaPluginLoader$59.execute(JavaPluginLoader.java:654)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:310)
        at org.bukkit.craftbukkit.event.CraftEventFactory.callCreatureSpawnEvent(CraftEventFactory.java:232)
        at net.minecraft.server.World.addEntity(World.java:820)
        at net.minecraft.server.SpawnerCreature.spawnEntities(SpawnerCreature.java:133)
        at net.minecraft.server.World.doTick(World.java:1595)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:392)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:312)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
14:00:20 [SEVERE] Could not pass event CREATURE_SPAWN to NoSpawn

What can i change so i dont get this message anymore?

with 1.5.2 maybe mobspawner in combination with spawnmob .19.4 bring this error from time to time on bukkit 860

Code:

2011-06-13 16:28:48 [SEVERE] Could not pass event CREATURE_SPAWN to NoSpawn
java.lang.NullPointerException
    at me.xXLupoXx.NoSpawn.NoSpawnEntityListener.onCreatureSpawn(NoSpawnEntityListener.java:29)
    at org.bukkit.plugin.java.JavaPluginLoader$59.execute(JavaPluginLoader.java:654)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:58)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:310)
    at org.bukkit.craftbukkit.event.CraftEventFactory.callCreatureSpawnEvent(CraftEventFactory.java:232)
    at net.minecraft.server.World.addEntity(World.java:820)
    at net.minecraft.server.TileEntityMobSpawner.g_(TileEntityMobSpawner.java:73)
    at net.minecraft.server.World.cleanUp(World.java:1091)
    at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:395)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:309)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)

That NPE is caused by bukkit initiating the creature spawn events while the plugin is still loading or some funky stuff like that. the plugin needs to be adjusted for some null checks on it's config values most likely. I know I had to fix mine a while back for a bug identical to this.

Code:

14:01:58 [SEVERE] Could not load 'plugins\NoSpawn.jar' in folder 'plugins':
mapping values are not allowed here
 in "<reader>", line 7, column 59:
     ... se                BlockBlacklist: ''
                                         ^

What do I need to change so that it works?

Found a bug; my world name is world.biome ... your plugin creates the following structure;

Code:

worlds:
    world:
        creature:
            Creeper:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
... deleted a bunch of creatures for brevity ...
            Skeleton:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
        biome:
            creature:
                Creeper:
                    spawn: true
                    BlockBlacklist: ''
                    Limit: 0

You can see it makes a sub group because of the period in the world name.

This doesn't seem to work for me anymore.... I raised the TotalMobLimit from what I originally had to 200 because users were complaining that there were too few mobs. Ever since I raised the mob limit mobs have stopped spawning completely. Yes, yes, I have mobs turned on in my server.properties.

after removing all the mobspawner (configured with spawnmob) i didn't see any of this errors.

Code:

world:
        creature:
            Creeper:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Chicken:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Sheep:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Giant:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Zombie_Pigman:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Slime:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Spider:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Pig:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Squid:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Wolf:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Zombie:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Cow:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Ghast:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
            Skeleton:
                spawn: true
                BlockBlacklist: '20;4'
                Limit: 0
        properties:
            TotalMobLimit: 0

...and my home is safe?



nice toll

Does the /allowspawn command work with Monsters?

Just dropping in to say: Thank you. This is a great Plug-in, no issues, easy to manage, and our community build projects have been creeper safe ever since I installed it.

Does this only stop the natural spawns? or does it stop ALL spawns?

Work in 953 ?

In 1.5.2 it stops ALL spawns.
v1.5.3 only stops normal spawns (also egg, bed-spawns)
only unusual spawns like from plugins aren't stopped

1.5.3 works with RB953

1.5.3
download here

Just thought id pop in to say, 1.5.2 is working fine for me with RB953.

Hey!
How come when i type "/nospawn spawn pig 2" i get the error "spawn isn't a valid parameter! Please use allowspawn, denyspawn, despawn, setmoblimit, settotalmoblimit or settimer"
Im not sure if im doing it right or wrong?

Was this ever fixed?

1.5.3 is causing 100% cpu and unusable server here on b953

I removed the spawncommand from the plugin because there is no need anymore(for this plugin)
please use anotherplugin to spawn creatures.

this is not a bug in this plugin, it's a problem with the yaml format. A .(dot) is the delimiter in the plugin to jump in a deeper node
please try this:

Code:

worlds:
    'world.biome':
        creature:
            Creeper:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
... deleted a bunch of creatures for brevity ...
            Skeleton:
                spawn: true
                BlockBlacklist: ''
                Limit: 0

But I think it will cause the same problems
remove the .(dot) in the name and everything will work fine

sure that THIS plugin cause it??
I will look on it

i get this error now...

Code:

22:51:05 [SEVERE] Error occurred while enabling NoSpawn v1.5.3 (Is it up to date?): For input string: ""
java.lang.NumberFormatException: For input string: ""
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
    at java.lang.Integer.parseInt(Integer.java:470)
    at java.lang.Integer.parseInt(Integer.java:499)
    at me.xXLupoXx.NoSpawn.ConfigBuffer.getBlacklist(ConfigBuffer.java:181)
    at me.xXLupoXx.NoSpawn.ConfigBuffer.readConfig(ConfigBuffer.java:105)
    at me.xXLupoXx.NoSpawn.NoSpawn.onEnable(NoSpawn.java:35)
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:126)
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:857)
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:264)
    at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:151)
    at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:136)
    at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:284)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:271)
    at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:148)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:335)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)

I think you have " (double quotes) in your config
replace them with ' (single quotes)
When it still don't work post your config please

No double quotes :\ is it because they have to spawn on at least one block? but even then, i see them spawning in caves when the only block i allow is soulsand...

Code:

properties:
    RefreshTimer: 200000
worlds:
    world_nether:
        creature:
            Creeper:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Chicken:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Sheep:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Giant:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Zombie_Pigman:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Slime:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Spider:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Pig:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Squid:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Wolf:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Zombie:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Cow:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Ghast:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Skeleton:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
        properties:
            TotalMobLimit: 0
    world:
        creature:
            Creeper:
                spawn: true
                BlockBlacklist: '1;2;3;4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23;24;25;26;27;28;29;30;31;32;33;34;35;36;37;38;39;40;41;42;43;44;45;46;47;48;49;50;51;52;53;54;55;56;57;58;59;60;61;62;63;64;65;66;67;68;69;70;71;72;73;74;75;76;77;78;79;80;81;82;83;84;85;86;87;88;89;90;91;92;93;94;95;96'
                Limit: 0
            Chicken:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Sheep:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Giant:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Zombie_Pigman:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Slime:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Spider:
                spawn: true
                BlockBlacklist: '1;2;3;4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23;24;25;26;27;28;29;30;31;32;33;34;35;36;37;38;39;40;41;42;43;44;45;46;47;48;49;50;51;52;53;54;55;56;57;58;59;60;61;62;63;64;65;66;67;68;69;70;71;72;73;74;75;76;77;78;79;80;81;82;83;84;85;86;87;88;89;90;91;92;93;94;95;96'
                Limit: 0
            Pig:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Squid:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Wolf:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Zombie:
                spawn: true
                BlockBlacklist: '1;2;3;4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23;24;25;26;27;28;29;30;31;32;33;34;35;36;37;38;39;40;41;42;43;44;45;46;47;48;49;50;51;52;53;54;55;56;57;58;59;60;61;62;63;64;65;66;67;68;69;70;71;72;73;74;75;76;77;78;79;80;81;82;83;84;85;86;87;88;89;90;91;92;93;94;95;96'
                Limit: 0
            Cow:
                spawn: true
                BlockBlacklist: ''
                Limit: 0
            Ghast:
                spawn: false
                BlockBlacklist: ''
                Limit: 0
            Skeleton:
                spawn: true
                BlockBlacklist: ''1;2;3;4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23;24;25;26;27;28;29;30;31;32;33;34;35;36;37;38;39;40;41;42;43;44;45;46;47;48;49;50;51;52;53;54;55;56;57;58;59;60;61;62;63;64;65;66;67;68;69;70;71;72;73;74;75;76;77;78;79;80;81;82;83;84;85;86;87;88;89;90;91;92;93;94;95;96''
                Limit: 0
        properties:
            TotalMobLimit: 0

Your problem is that you have 2 single qoutes before and after the value at:
Worlds -> world - >Skeleton -> BlockBlacklist

and why didn't you disable Zombies,Creeper,Skeletons and Spiders at all??
if they don't can spawn at all blocks you can also set spawn to false
That is easier to configurate and better for server perfomance

Because if i disable them completly, they wont spawn from their spawners. i just dont want them randomly in caves or above ground. its a complicated server idea i have xD

does limit: 0 means it is not limited?

Yes 0 means no limit

Just a heads up; conflicts with a fairly popular plugin: MobArena

Whether or not you want to look at fixing it is up to you, just giving you a heads up.

I tried blocking mobs in every possible way I could, but they spawned in arenas with grass blocks every time - even when added to a blacklist. And never any errors.

My post from their thread:

Not sure if this a problem with Bukkit #1000+ or if its always had this problem. I installed it to day and my processor usage shot up to between 100 and 140% with only 15 players on.

I removed the plugin and it dropped back to a more reasonable 50-60%