spawns

Table of Contents

Spawns is a plugin for Bukkit and Minecraft that allows you to fully customize the spawning behaviour of mobs on your server.

Features

tweak the default Minecraft spawns or replace them completely
set mobs to spawn under conditions they never normally would
block certain mobs from ever spawning
cause mobs to spawn with potion effects, equipment, saddles, etc.
cause mobs to spawn in different variants, like powered creeper, wither skeleton, etc.
mobs appear in the world in the same way as they do normally, so are compatible with all other plugins

Dive right in here to see how to make config files or keep reading for an overview of Minecraft spawning.

Default spawning

Minecraft spawning works like this:
Every spawn cycle (1 tick or 1/20 second by default for hostile mobs) the game makes a list of all the chunks around each player, up to a radius of seven chunks. Each chunk will only be counted once, even if that chunk is around several players.

Once this list is complete a mob limit is calculated. The limit is higher the more chunks are in the list. If the limit is lower than the current amount of a mob type in the world then the cycle will be cancelled.

If the limit is not yet reached a random block from each chunk in the list will be calculated and this chunk will be used as the centre point for a pack of mobs to spawn around. In order to continue, this block must be water for water mobs (only squid so far) and air for any other type of mob.

If this block is suitable then a maximum of 12 random blocks are chosen from up to 20 blocks away, but always at the same height as the centre block.

Lastly, The individual blocks are checked that they can physically fit the mob, so they need to be air, have air above and an opaque block below. The type of mob is chosen based upon the matching conditions (biome, height, floor block type, etc.) and the final mob is chosen randomly from all mobs that are eligible to spawn there. All other mobs in the pack will be the same type.

Permissions

spawns.can-reload-config, which allows the user to reload the config. Default is Op.

spawns.can-count-mobs, which allows the user to display a summary of mob amounts in a world. Default is Op.

Commands

/reload-spawns, or /rs, which reloads the config without having to reload the server. Any mobs already in the world will be unaffected by any changes in the config.

/count-mobs, or /cm, which displays a list of mob numbers in the world. Add a world name argument to specify a world (optional if run as a player) and / or a mob type argument to choose one type of mob to count.

Update checking

If you like, you can set the plugin to check for any newer versions that get released. To do this add an element to the config.xml file, like this:

&lt;check-for-newer-version/&gt;

When this element is present the plugin will report if it finds a newer version. This only works for release builds so you won't be bothered by any beta or dev builds. To disable this checking simply remove the element.

Note that no update will be downloaded even with this set.

Examples

I would love to get any example config/packs/mobs files you have created to add to the docs, so if you have one you're proud of send it in and I'll add it.

spawns took a lot of work, so if your server is enriched by it please consider sending some love my way!

If you're penniless or like spawns but not that much I'm also partial to TF2 items. Send any you don't want my way! STEAM id: coldntired

If you don't know what TF2 is, then start playing! It's free and fun!

For other projects, links, help, etc. please visit the main website.

You can also follow sylian.eu on Twitter for updates.

Comments

_ForgeUser8502844
- Join Date: 2/29/2012
- Posts: 134
- Member Details
#577 _ForgeUser8502844

View User Profile

Send Message

Posted Jun 12, 2016
@coldandtired

That's great, thanks!

(don't forget to add to wiki!)

Looking forward to my invisibats being quiet, the squeaking was betraying their presence :)

Rollback Post to Revision RollBack
coldandtired
- Location: Warsaw
- Join Date: 10/17/2011
- Posts: 1,862
- Member Details
#576 coldandtired

View User Profile

Send Message

Posted Jun 12, 2016
@Schlutteh Okay, added four new properties: glowing, gravity, invulnerable, and silent. All are boolean types.

I haven't had any time to test these so caveat emptor!

Rollback Post to Revision RollBack
_ForgeUser8502844
- Join Date: 2/29/2012
- Posts: 134
- Member Details
#575 _ForgeUser8502844

View User Profile

Send Message

Posted Jun 12, 2016
Whoo 1.10 nice!

I have a minor feature request for the future; One of the later additions to the CraftBukkit code was a hook for the entity tag "isSilent", think it could be added to mob values?

Again though, minor request, no pressing need for it to be added.

Rollback Post to Revision RollBack
coldandtired
- Location: Warsaw
- Join Date: 10/17/2011
- Posts: 1,862
- Member Details
#573 coldandtired

View User Profile

Send Message

Posted May 11, 2016
Guys, no arguing, I love you both :)

A 1.9.4 build is now up here.

Rollback Post to Revision RollBack
NullBlox
- Location: Missouri
- Join Date: 7/21/2013
- Posts: 411
- Member Details
#572 NullBlox

View User Profile

Send Message

Posted May 11, 2016
@Schlutteh

Could you please just ignore me as I have been trying to do to you. Thanks ZachryWilsn

Last edited by NullBlox: Jun 1, 2016

Rollback Post to Revision RollBack
_ForgeUser10408918
- Join Date: 1/18/2013
- Posts: 110
- Member Details
#571 _ForgeUser10408918

View User Profile

Send Message

Posted May 10, 2016
@Schlutteh

This will be broken no matter what build of spigot 1.9.4 is used, it is an updated NMS class issue.

Rollback Post to Revision RollBack
_ForgeUser8502844
- Join Date: 2/29/2012
- Posts: 134
- Member Details
#570 _ForgeUser8502844

View User Profile

Send Message

Posted May 10, 2016
@zachrywilsn

Never use the first build of an update, give it a bit more time!

Last edited by _ForgeUser8502844: May 10, 2016

Rollback Post to Revision RollBack

NullBlox

Location: Missouri
Join Date: 7/21/2013
Posts: 411
Member Details

#569 Posted May 10, 2016

We need a update for 1.9.4.

Just a heads up.

[14:14:54 INFO]: [spawns] Enabling spawns v1.9 b2
[14:14:54 ERROR]: Error occurred while enabling spawns v1.9 b2 (Is it up to date?)
java.lang.NoClassDefFoundError: net/minecraft/server/v1_9_R1/World
>       at eu.sylian.spawns.spawning.Mob.<init>(Mob.java:75) ~[?:?]
>       at eu.sylian.spawns.spawning.Mob.createMobList(Mob.java:220) ~[?:?]
>       at eu.sylian.spawns.Config.Create(Config.java:101) ~[?:?]
>       at eu.sylian.spawns.Spawns.reloadFiles(Spawns.java:106) ~[?:?]
>       at eu.sylian.spawns.Spawns.onEnable(Spawns.java:48) ~[?:?]
>       at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:292) ~[craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:340) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at org.bukkit.craftbukkit.v1_9_R2.CraftServer.loadPlugin(CraftServer.java:361) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at org.bukkit.craftbukkit.v1_9_R2.CraftServer.enablePlugins(CraftServer.java:321) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at net.minecraft.server.v1_9_R2.MinecraftServer.t(MinecraftServer.java:416) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at net.minecraft.server.v1_9_R2.MinecraftServer.l(MinecraftServer.java:381) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at net.minecraft.server.v1_9_R2.MinecraftServer.a(MinecraftServer.java:336) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at net.minecraft.server.v1_9_R2.DedicatedServer.init(DedicatedServer.java:268) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:532) [craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at java.lang.Thread.run(Thread.java:745) [?:1.8.0_71]
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_9_R1.World
>       at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91) ~[craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[craftbukkit.jar:git-Spigot-4af49dc-c5e9a16]
>       at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_71]
>       at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_71]
>       ... 16 more

_ForgeUser21787348
- Join Date: 9/16/2015
- Posts: 9
- Member Details
#568 _ForgeUser21787348

View User Profile

Send Message

Posted Apr 22, 2016
@bonnydust

I have fixed this issue by using lowercase in the file name even though my world name is in capitals.

Rollback Post to Revision RollBack
_ForgeUser21787348
- Join Date: 9/16/2015
- Posts: 9
- Member Details
#567 _ForgeUser21787348

View User Profile

Send Message

Posted Apr 22, 2016
I am still getting this error, my world name is LTD, the world file created for spawns is LTD.xml and placed inside the "spawns" plug in folder.

22.04 17:17:10 [Server] ERROR No valid worlds defined - stopping 22.04 17:17:10 [Server] INFO imported 0 mobs 22.04 17:17:10 [Server] INFO Enabling spawns v1.8.7 b1
Rollback Post to Revision RollBack

_ForgeUser8502844

Join Date: 2/29/2012
Posts: 134
Member Details

#566 Posted Apr 13, 2016

<<reply 2778781="">>

No problem, just add the <riding> condition and the type of mob to be ridden, or the name of the custom mob to be ridden. Here's one of mine;

<skelerider>
    <mob-type>skeleton</mob-type>
    <riding>skelehorse</riding>
    <weapon>
        <material>diamond_sword</material>
    </weapon>
        <select-if>
            <light>0..8</light>
            <block-light>0</block-light>
            <blocks-from-player>30..</blocks-from-player>
            <blocks-from-spawn>30..</blocks-from-spawn>
            <biome>plains / desert</biome>
            <ground>grass / sand</ground>
            <percent>10</percent>
        </select-if>
</skelerider>

That's the rider, and here's the mount;

<skelehorse>
    <mob-type>horse</mob-type>
    <variant>skeleton_horse</variant>
    <tamed>yes</tamed>
    <despawn>yes</despawn>
    <saddled>yes</saddled>
    <select-if>
        <light>0..8</light>
        <block-light>0</block-light>
        <biome>plains / desert</biome>
        <ground>grass / sand</ground>
        <blocks-from-player>30..</blocks-from-player>
        <blocks-from-spawn>30..</blocks-from-spawn>
        <percent>100</percent>
    </select-if>
</skelehorse>

Last edited by _ForgeUser8502844: Apr 13, 2016

michaelbeaud
- Location: Faucigny
- Join Date: 2/13/2013
- Posts: 42
- Member Details
#565 michaelbeaud

View User Profile

Send Message

Posted Apr 12, 2016
I'm actually looking for a plugin ansering exactly to that demand : having not only per-biome mob spawns (spider in forest, zombie in swamps, skeletons in custom dungeons like ancient tombs, etc...)

I'd also like to spawn custom combinations of horses (especially the zombie and skeleotn horses) with mobs riding them... Which, to be honest, is one of the main reason I'd chose this plugin over another IS that possible with spawns ? I've read in the comments that it seems to be, but how would you do it ?

Thanks for your answer

Rollback Post to Revision RollBack
_ForgeUser8502844
- Join Date: 2/29/2012
- Posts: 134
- Member Details
#564 _ForgeUser8502844

View User Profile

Send Message

Posted Mar 20, 2016
@coldandtired

Scratch that, I got unexpected results; Zombie riding a zombie horse and the zombie was actually in control of it!

There's a little bit of a desync between the rider and mount, but it's still pretty damn cool. Much better than how it used to be, with the rider just sitting there with no pathfinding ability.

Awesome!

Rollback Post to Revision RollBack
coldandtired
- Location: Warsaw
- Join Date: 10/17/2011
- Posts: 1,862
- Member Details
#563 coldandtired

View User Profile

Send Message

Posted Mar 18, 2016
@Schlutteh I did have to change the code a little for riding, as there can now be more than one (according to the API).

I remember this always being problematic but I'll try to do a little testing this weekend to see if it's working better now.

Rollback Post to Revision RollBack
_ForgeUser8502844
- Join Date: 2/29/2012
- Posts: 134
- Member Details
#562 _ForgeUser8502844

View User Profile

Send Message

Posted Mar 17, 2016
@coldandtired

Works great! No errors in the log at all.

I'm just wondering have you changed (or will change) <riding> to the new "passengers" data of vanilla 1.9? I was never able to get my Spawns mobs working with riders in 1.8, they would always just spawn in the same block space but not connected to their mount. Maybe the new passengers data will be easier to work with.

Happy to see you're still around too :) I've moved from CraftBukkit to Spigot, no noticeable differences with plugin compatibility. They are still catching up with their 1.9 API, but it's much faster than 1.8's update.

Last edited by _ForgeUser8502844: Mar 17, 2016

Rollback Post to Revision RollBack
coldandtired
- Location: Warsaw
- Join Date: 10/17/2011
- Posts: 1,862
- Member Details
#561 coldandtired

View User Profile

Send Message

Posted Mar 17, 2016
@Schlutteh This one has been built with 1.9 so it should be fine.

I'm still around but things have definitely got a lot quieter. I'm keeping an eye on Sponge and watching the API develop.

Rollback Post to Revision RollBack
_ForgeUser8502844
- Join Date: 2/29/2012
- Posts: 134
- Member Details
#560 _ForgeUser8502844

View User Profile

Send Message

Posted Mar 16, 2016
It was worth a shot, but trying Spawns in 1.9 Spigot didn't work at all. Damn! Any chance you'll come back for an update? This plugin is SO good... and I spent so much time writing my configs!

Rollback Post to Revision RollBack
SXR_Wahrheit
- Join Date: 5/19/2011
- Posts: 355
- Member Details
#559 SXR_Wahrheit

View User Profile

Send Message

Posted Nov 24, 2015
Bother bother bother. Hit me up on Steam when you have a chance? Twitter works too, I have DMs on.

Rollback Post to Revision RollBack
tronman2020
- Location: Fortsmith
- Join Date: 2/1/2014
- Posts: 65
- Member Details
#558 tronman2020

View User Profile

Send Message

Posted Sep 10, 2015
has any one found a vanilla-ish setup config for this? Would some one please post any config for me?

Rollback Post to Revision RollBack
_ForgeUser8502844
- Join Date: 2/29/2012
- Posts: 134
- Member Details
#557 _ForgeUser8502844

View User Profile

Send Message

Posted Aug 19, 2015
@freakytoad1

Just give them X/Y/Z conditions + distance from player

Rollback Post to Revision RollBack
To post a comment, please login or register a new account.