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Hey there! Thanks for using Denizen for Bukkit and Citizens2. Looking for a quick starting guide? Here's the place!

So, what is Denizen? It's is best classified as a scripting platform. Denizen for Bukkit and Citizens2 utilizes the scripting, and various other components provided by DenizenAPI. The scripting component of Denizen features easy to use script containers, replaceable tags, commands, and a queue system. Built aside is a slew of components that deal with many kinds of event handlers, many additional NPC features, a fully-featured variable system (we call them 'flags'), and a rich object-oriented set of features. I encourage users to start small when first getting into Denizen, but rest assured there are tons of features to explore.

Denizen NPCs? Yep, that's right. Denizen is probably best known as a way to create scripted Citizen NPCs. In fact, this whole project started out as an extension to Citizens2. You can use it to make interactive NPCs with the use of Assignment Scripts and Interact Scripts. This is pretty easy to do, and there's a bunch of cool NPC specific (among many other) commands and tags that you can utilize as well.

Here's a small example I call 'cookies'. I normally like to comment my scripts, but this one below is presented without any as to show the flow.

  type: assignment 
  interact scripts: 
  - 100 Cookie Handler 

Cookie Handler:
  type: interact 
    'Spreading the Word*': 
      click trigger: 
        - random 3 
        - chat 'I like cookies!' 
        - chat 'MMmm.. cookies are favorite!' 
        - chat 'Cocoa and wheat me freak!' 
      chat trigger: 
          trigger: 'I love /cookie/s!' 
          - chat 'Me too!' 
          - narrate '<> gives you some cookies.' 
          - give i@cookie qty:6 
          - zap 'step:Cookies given' 
    'Cookies given': 
        click trigger: 
            - chat 'How were the cookies?' 
            - zap 'step:Spreading the Word'

It's a simple 2-step, multi-trigger script that creates a cookie loving NPC. For some reason I think it's funny to name the NPC 'Notch'. Making a NPC use this script couldn't be easier, either. Simply use a bukkit command while having the NPC selected. It looks like this:

/npc assignment --set cookies

Now clicking on your NPC will use Denizen Triggers to activate the script above. An instant Denizen NPC! Cookies is funny, but hardly useful, and it's my personal philosophy that NPCs should be useful. How 'bout a simple healer? This NPC will heal you, but only when you're seriously injured.

Basic Healer: 
  type: assignment 
  interact scripts: 
  - 100 heal me, bro! 

Heal me, bro!: 
  type: interact 
    "Need a heal?*": 
      click trigger: 
        - if '<>' < '<m:<> / 2>' { 
            - look <player.location> 
            - chat 'Woah dude, you are <>! You could use a heal!' 
            - chat 'Just give me another click to get some power!' 
            - zap "Healin'" duration:30s 
          } else { 
            - look <player.location> 
            - chat 'Nice an healthy. Keep it up!'  
      click trigger: 
        - ^zap 'need a heal?' 
        - ^engage 
        - chat "Here goes nothin'!" 
        - playeffect instant_spell <npc.location> qty:25 
        - playeffect heart <player.location> qty:25 offset:1 
        - heal <player> 
        - disengage

How do you make a Healer NPC with this script? You guess it! Just select that NPC, and type:

/npc assignment --set 'basic healer'

It's not just for NPCs. I guess I already told you that, but Denizen has some other script types that open up possibilities that extend far beyond it's core functionality of utilizing NPCs. One of my favorite 'simple scripts' that I like to show people is one that my friend Blankiito showed me. The one below is slightly modified, but basically it enables a 'rogue-like feature' that makes a player invisible when sneaking. It's a simple concept, but perfectly illustrates the flow of a Denizen Script.

  type: world 
  debug: false 
    on player starts sneaking: 
    - playeffect <p.location> magic_crit qty:10 
    - invisible <player> state:true 

    on player stops sneaking: 
    - invisible <player> state:false

Even small scripts can be incredibly useful for your server. Sometimes scripts can replace entire bukkit plugins, and since the 'code' is in Denizen Script, the end result is often times more flexible to you, the server operator. Have a plugin that run some commands every once in awhile? Replace it with a simple Denizen script.

Auto Save Event Handler: 
  type: world 
  debug: false 
    on 5:00 in w@world:  
    - announce 'Autosaving...' 
    - execute as_server 'denizen save' 
    - execute as_server 'citizens save' 
    - execute as_server 'save-all'

Use Denizen to solve problems, or to make features easier to use. Example: If you're familiar with Citizens, you may have realized that WorldGuard's /butcher command is not friendly to mob-type NPCs. It removes them, too, which can be a pain! Why not write your own /butcher command?

Safer Butcher Handler: 
  type: world 
  debug: false 
    on sbutcher command:  
    - narrate 'Removing all mob entities within 15 blocks... your NPCs are safe!'  
    - foreach <player.location.find.entities.within[15]> {  
        - if <%value%.is_mob>  
          remove %value%  

Denizen Quests are the best quests. If you're like me, this whole thing started by using the Quester for Citizens1. It featured a fairly simple questing structure to implement things like 'kill quests' and 'collection quests'. When Citizens went to version 2, that functionality was no longer 'core', but no worries Denizen can help! By utilizing Denizen's Player Listeners, simple questing can be done easily, and it's more robust because you can use all the other features implemented by Denizen, too!

So, how do you best get started? This is a question we get all the time. Because of the enormous amount of ways to use and customize Denizen, we suggest that you simply START SMALL! Checking out the videos, scripts, and articles on denizen-docs you're sure to find a comfortable place to start. While scripting, utilize the tools provided, such as the SublimeText2 grammar pack, and the reference and search for meta lookup on this site.

Like any programming language, there is a learning curve with code structure and syntax that will only be overcome by trial and error. While using some user-made scripts can be as easy as dragging-and-dropping, many scripts will likely require at least a basic understanding of the denizen-script structure to fully utilize their features. But don't worry! Denizen is purposefully made to be easy to read and easy to customize! Tags, commands and events are all very verbose, easy to follow. With a little bit of research we know you'll soon be drunken with power, just like us!


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  • Avatar of mcmonkey4eva mcmonkey4eva Apr 21, 2014 at 22:27 UTC - 0 likes

    @Mexbotdude: Go

    There's an error in the script named 'mazeka'

    That error being an invalid symbol on line 4 of the script.

    If you can't figure out the problem, post the script to and link it back here.

  • Avatar of Mexbotdude Mexbotdude Apr 21, 2014 at 17:06 UTC - 0 likes

    help I can't load scripts

    [12:01:05 ERROR]: Cannot load plugins/Denizen/scripts/mazeka.yml org.bukkit.configuration.InvalidConfigurationException: mapping values are not allowed here in "<string>", line 4, column 12: actions: ^

    at org.bukkit.configuration.file.YamlConfiguration.loadFromString( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.configuration.file.FileConfiguration.load( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.configuration.file.FileConfiguration.load( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.aufdemrand.denizen.scripts.ScriptHelper._concatenateCoreScripts( [denizen-0.9.4-SNAPSHOT.jar:?] at net.aufdemrand.denizen.scripts.ScriptHelper.reloadScripts( [denizen-0.9.4-SNAPSHOT.jar:?] at net.aufdemrand.denizen.CommandHandler.reload( [denizen-0.9.4-SNAPSHOT.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [?:1.7.0_51] at sun.reflect.NativeMethodAccessorImpl.invoke( [?:1.7.0_51] at sun.reflect.DelegatingMethodAccessorImpl.invoke( [?:1.7.0_51] at java.lang.reflect.Method.invoke( [?:1.7.0_51] at net.citizensnpcs.api.command.CommandManager.executeMethod( [Citizens.jar:?] at net.citizensnpcs.api.command.CommandManager.execute( [Citizens.jar:?] at net.citizensnpcs.api.command.CommandManager.executeSafe( [Citizens.jar:?] at net.citizensnpcs.Citizens.onCommand( [Citizens.jar:?] at net.aufdemrand.denizen.Denizen.onCommand( [denizen-0.9.4-SNAPSHOT.jar:?] at org.bukkit.command.PluginCommand.execute( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.command.SimpleCommandMap.dispatch( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.PlayerConnection.a( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.PacketPlayInChat.a( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.NetworkManager.a( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.MinecraftServer.u( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.DedicatedServer.u( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at net.minecraft.server.v1_7_R1.MinecraftServer.t( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] Caused by: org.yaml.snakeyaml.scanner.ScannerException: null; mapping values are not allowed here at org.yaml.snakeyaml.scanner.ScannerImpl.fetchValue( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.parser.ParserImpl.peekEvent( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.parser.ParserImpl.checkEvent( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.composer.Composer.composeMappingNode( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.composer.Composer.composeNode( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.composer.Composer.composeMappingNode( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.composer.Composer.composeNode( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.composer.Composer.composeDocument( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.composer.Composer.getSingleNode( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.Yaml.loadFromReader( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.yaml.snakeyaml.Yaml.load( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] at org.bukkit.configuration.file.YamlConfiguration.loadFromString( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-b3020jnks] ... 29 more

  • Avatar of mcmonkey4eva mcmonkey4eva Apr 21, 2014 at 07:13 UTC - 0 likes

    @wrathHerobrine: Go

    Yup. You'll need a few different Denizen-related skills to pull this often. I'm going to assume you're semi-capable with Denizen here, and can handle at least basic scripting...

    First, a normal click trigger using an interact script (the first thing explained in any Denizen tutorial), in it, set a flag on the player (again, extremely basic feature)... just flag the player with "hitboost" or whatever you want.

    Second, you need a 'world' type script, with this event: - or, specifically, "on player damages player" (or 'on player damages entity' depending on whether it's for PvP only or PvE is permitted)

    In this world event, IF the player has the flag, CAST ( ) the potion effect on <context.damager> (which is the attacking player in the world event)

    The interact/assignment scripts for the NPC I assume you can handle entirely on your own (or can figure out by checking the tutorials and such)

    World scripts are very simple and useful, but not very well documented yet, and if you don't know how to make one, here's an example of how the world script you need here might look:

      type: world
        on player damages player:
        - if <context.damager.as_player.flag[hitboost]> {
          cast INCREASE_DAMAGE duration:10s power:2 <context.damager>
    Last edited Apr 21, 2014 by mcmonkey4eva
  • Avatar of wrathHerobrine wrathHerobrine Apr 21, 2014 at 00:38 UTC - 0 likes

    can i make a npc that when clicked enables you a feature that when you hit someone u get strength 2 for 10 secs and gives you some armor (some kind of a class sistem)

  • Avatar of peppercoco peppercoco Apr 20, 2014 at 22:32 UTC - 0 likes

    Just want to say thank you for this plugin! Very, very helpful.

  • Avatar of mcmonkey4eva mcmonkey4eva Apr 18, 2014 at 22:46 UTC - 0 likes

    @Gobyslayer: Go


    That is build #1460. Your error report clearly indicates that you're using build #1434 which is a different build - that build is much older, and built for 1.7.2, while you're on 1.7.5...

    If you don't feel like doing that, this one will work too: (Actually I probably should have linked this one originally, as it's newer, but the 1.7.2/1.7.5/1.7.8/1.79 update sequence got a bit confusing)

    Last edited Apr 18, 2014 by mcmonkey4eva
  • Avatar of Gobyslayer Gobyslayer Apr 18, 2014 at 20:26 UTC - 0 likes

    @mcmomkey4eva[16:19:10 INFO]: +> [Denizen] +-----+ [16:19:10 INFO]: +> [Denizen] _/_ _ ._ _ _ [16:19:10 INFO]: +> [Denizen] (/(-/ )/ /_(-/ ) scriptable minecraft [16:19:10 INFO]: +> [Denizen] [16:19:10 INFO]: +> [Denizen] by: aufdemrand [16:19:10 INFO]: +> [Denizen] version: 0.9.4-SNAPSHOT (build 1434) [16:19:10 INFO]: +> [Denizen] +-----+ [16:19:10 ERROR]: Error occurred while enabling Denizen v0.9.4-SNAPSHOT (build 1434) (Is it up to date?) java.lang.NoClassDefFoundError: net/minecraft/server/v1_7_R1/EntityHuman at java.lang.Class.getDeclaredConstructors0(Native Method) [?:1.6.0_65] at java.lang.Class.privateGetDeclaredConstructors( [?:1.6.0_65] at java.lang.Class.getConstructor0( [?:1.6.0_65] at java.lang.Class.getConstructor( [?:1.6.0_65] at net.citizensnpcs.api.trait.TraitInfo.create( [?:?] at net.aufdemrand.denizen.Denizen.onEnable( [?:?] at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at org.bukkit.plugin.SimplePluginManager.enablePlugin( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at org.bukkit.craftbukkit.v1_7_R2.CraftServer.loadPlugin( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at org.bukkit.craftbukkit.v1_7_R2.CraftServer.enablePlugins( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at net.minecraft.server.v1_7_R2.MinecraftServer.n( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at net.minecraft.server.v1_7_R2.MinecraftServer.g( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at net.minecraft.server.v1_7_R2.MinecraftServer.a( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at net.minecraft.server.v1_7_R2.DedicatedServer.init( [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_7_R1.EntityHuman at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-14-g8f8716c-b3042jnks] at java.lang.ClassLoader.loadClass( [?:1.6.0_65] at java.lang.ClassLoader.loadClass( [?:1.6.0_65] ... 17 more

  • Avatar of mcmonkey4eva mcmonkey4eva Apr 17, 2014 at 22:54 UTC - 0 likes

    @Gobyslayer: Go

    If the one I linked you to doesn't work, please post an error generated by /that/ version.

    And no, it's not the same as the one you posted earlier.

    Last edited Apr 17, 2014 by mcmonkey4eva
  • Avatar of Gobyslayer Gobyslayer Apr 17, 2014 at 18:51 UTC - 0 likes

    @mcmonkey4eva the one you gave me doesnt work for craftbukkit 1.7.5 its the same one i cant use

  • Avatar of mcmonkey4eva mcmonkey4eva Apr 16, 2014 at 23:07 UTC - 0 likes

    @Gobyslayer: Go

    Er... YEAH. Exactly. You're running CB 1.7.5, not 1.6. Exactly. You're running the Denizen build made for 1.6 on a 1.7 server. You need to get the Denizen version build for 1.7.5, which I've linked you to below and I'll link again here:

    Last edited Apr 18, 2014 by mcmonkey4eva


Date created
May 21, 2012
Last update
Jan 21, 2014
Development stage
  • enUS
GNU General Public License version 3 (GPLv3)
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