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Denizen uses a pasting service provided by its developers to enable recording of debug sessions. This allows an easy and universal way to troubleshoot a script. It is only used on '/denizen submit', however this service is not endorsed by the BukkitDev staff. Use it at your own risk.

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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 mrretrus mrretrus Oct 10, 2014 at 00:33 UTC - 0 likes

    :\ Good and bad news- The good news is that im runnign a FTB server and denizens is working very well on it. Bad news, is that its unleashed- and its 1.5.2- It would be nice if I knew what commands were relevant to which versions, but so far its been trial and error since the "Handbook" is only whats somewhat recent. I was hoping that there was a command for this that goes far back to 1.5.2- Or if a newer version of denizens is even possible on 1.5.2 since this is Unleashed :p

  • Avatar of mcmonkey4eva mcmonkey4eva Oct 09, 2014 at 22:52 UTC - 0 likes

    @mrretrus: Go

    Please update to a version of Denizen released within the past year or preferably more recent if you expect support.

  • Avatar of mrretrus mrretrus Oct 09, 2014 at 11:29 UTC - 0 likes

    thanks for the response-, trying to put in your flag yields a string though not an actual time. The best I can do is get the total tick count for a player, but I cant seem to replace <player> itself with a tag to check ANOTHER players time.

    Theres 2 things I need to get- how can replace player. for a different player, and how can I actually get server time? Not daylight cycle, but actual time passed

    EX: - flag global "BlueTeam:<>" This records the name of the 1st user - flag global "Time1:<player[<FLAG.GLOBAL:BlueTeam>].time>" Used by a different player, but it doesnt work to actually put in the other persons name

    <server.current_time_millis> also doesnt return a number, just the string of words

  • Avatar of mcmonkey4eva mcmonkey4eva Oct 09, 2014 at 05:01 UTC - 0 likes

    @mrretrus: Go

    Something like:

    - flag npc start:<server.current_time_millis>

    - narrate "<server.current_time_millis.sub_int[<npc.flag[start]>].div_int[1000]> seconds have passed."

  • Avatar of mrretrus mrretrus Oct 09, 2014 at 04:26 UTC - 0 likes

    Im not finding a way to make any sort of timer... There's a cooldown sure, liek for quests or whatever- but how do I make him count up? Im trying to get something to tell how much time has passed SINCE an event- I cant find any sort of time flag other than player time, but is there one for NPC's?

  • Avatar of mcmonkey4eva mcmonkey4eva Oct 07, 2014 at 23:11 UTC - 0 likes

    @Sycholic: Go

    That's our NPC watcher complaining, the NPC was removed so Denizen shouts it out for little particular reason. You can safely ignore it.

    We'll likely remove the message or make it optional in the future.

  • Avatar of Sycholic Sycholic Oct 07, 2014 at 17:11 UTC - 0 likes

    not sure what to do with this.... or if its serious but it smells...

    • [13:00:48 INFO]: +> [dNPCRegistry] Deconstructing Denizen NPC test/8 [13:00:48 INFO]: +> [dNPC] Uh oh! Denizen has encountered a NPE while trying to fetch a NPC. Has this NPC been removed?

    Should I be worried about that or ignore it? Running bukkit 1.7.5 and appropriate citizens and denizens (build 1464) versions.

    Also what happens to all the builds of the 1400 series I dont see them anymore I was going to look for the very last build that was done with 1.7.5


  • Avatar of mcmonkey4eva mcmonkey4eva Sep 30, 2014 at 19:48 UTC - 0 likes

    @DuskFireHD: Go

    something like that, yes. You got the idea... if you have trouble executing it, I see you were getting help on IRC, so I recommend you follow up with your helpers there.

    Also just to clean your example in case it helps...

    - if <player.flag[once]> {

    - narrate "You have already done this challenge"

    - queue clear


    else {

    - narrate "Congrats, you win!"

    - give diamond


    Last edited Sep 30, 2014 by mcmonkey4eva
  • Avatar of DuskFireHD DuskFireHD Sep 30, 2014 at 10:45 UTC - 0 likes

    would it be something like this

    - if <player.flag[once]> queue clear else flag player once> { - execute as_player "i diamond 1"

    } else { - narrate 'You Have Already Done This Parkour Challenge <>'

  • Avatar of DuskFireHD DuskFireHD Sep 30, 2014 at 10:25 UTC - 0 likes

    Is There A Video That Can Show Me Exactly How I Can Create A Denizen Like Mineplex's Parkour Reward System So After A Player Clicks On An Denizen At The Parkour Finish Line It Will Give The Player A Reward Or Just Execute A Command But They Can Only Click The Denizen Once So After They Click That Denizen That Denizen Is Deactivated For That One Player And Everyone Else Can Do It But Its The Same For Them So They Can Only Do It Once Please Help Me Out??


Date created
May 21, 2012
Last update
Sep 22, 2014
Development stage
  • enUS
GNU General Public License version 3 (GPLv3)
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