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# Let's begin …
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[![Gitter](https://badges.gitter.im/Join Chat.svg)](https://gitter.im/walterhiggins/ScriptCraft?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
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ScriptCraft lets you write Minecraft Mods using Javascript - a
programming language that's relatively easy to learn and use.
ScriptCraft is a Minecraft Server plugin which means it must be used
with a Minecraft server. Once you've downloaded and installed the
Minecraft Server, then installed the ScriptCraft Plugin you can write
your own Minecraft mods using Javascript.
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I created ScriptCraft to make it easier for younger programmers to
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create their own Minecraft Mods. Mods are written using the
JavaScript programming language. Once the ScriptCraft mod is
installed, you can add your own new Mods by adding JavaScript (.js)
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files in a directory.
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* If you're new to programming and want to start modding Minecraft, then [Start Here][yp].
* If you've already used [Scratch][scr], have attended a few
[CoderDojo][cd] sessions, or have already dabbled with JavaScript,
then [Start Here][cda].
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* Watch some [demos][ytpl] of what you can do with ScriptCraft.
This is a simple mod in a file called greet.js in the scriptcraft/plugins directory …
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```javascript
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function greet( player ) {
echo( player, 'Hello ' + player.name );
}
exports.greet = greet;
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```
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At the in-game prompt, type:
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```javascript
/js greet(self)
```
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Anything you can do using the Spigot or CanaryMod APIs in Java,
you can do using ScriptCraft in JavaScript.
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# Description
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ScriptCraft is a plugin for Minecraft Servers which lets operators,
administrators and plug-in authors customize the game using
JavaScript. ScriptCraft makes it easier to create your own mods. Mods
can be written in Javscript and can use the full [SpigotMC
API][spigot] or [CanaryMod API][cm]. ScriptCraft works with all of the
following Minecraft Server software:
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* [SpigotMC][spigot] (Recommended)
* [GlowStone][gs]
* [CanaryMod][cm]
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[spigot]: http://www.spigotmc.org/
[gs]: http://www.glowstone.net/
I recommend using SpigotMC because both CanaryMod and CraftBukkit are
no longer being actively developed. The ScriptCraft mod also lets you
enter javascript commands at the in-game prompt. To bring up the
in-game prompt press the `/` key then type `js ` followed by any
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javascript statement. For example: `/js 1 + 1` will print 2.
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ScriptCraft also includes many objects and functions to make building
and modding easier using JavaScript. The JavaScript `Drone` object
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bundled with ScriptCraft provides an easy way to build at-scale in
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Minecraft. See the attached [temple.js][temple] file for an example
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of how you can use the sample Drone plugin to create new buildings in
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Minecraft.
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[drone]: https://github.com/walterhiggins/ScriptCraft/tree/master/src/main/javascript/drone/drone.js
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[cottage]: https://github.com/walterhiggins/ScriptCraft/tree/master/src/main/js/plugins/drone/contrib/cottage.js
[temple]: https://github.com/walterhiggins/ScriptCraft/blob/master/src/main/js/plugins/drone/contrib/temple.js
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[bukkit]: http://dl.bukkit.org/
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[cm]: http://canarymod.net/
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# Prerequisites
* You will need to have Java version 7 or later installed on your
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machine. Check the version by typing `java -version` at a command
prompt.
* You will need to [install SpigotMC][spigot] on your
machine. SpigotMC is a customized version of Minecraft Server that
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makes it easy to install plugins and customize Minecraft. You can
[download the SpigotMC server here.][spigotdl]
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# Installation
Before installing ScriptCraft you must first install SpigotMC which is a special version of Minecraft Server that makes it easy to customize the game.
## Installing and Running SpigotMC
Follow these steps to download and install SpigotMC on your machine.
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1. Download Spigot's [BuildTools.jar][spigotdl]
2. Save the BuildTools.jar file to a new directory called spigotmc.
3. Open a terminal (Mac and Linux) or command prompt (windows) window and type `java -jar BuildTools.jar`. This will kick off a long series of commands to "build" SpigotMC.
4. When the build is done, there will be a new file beginning with `spigot` and ending in `.jar` in the spigotmc directory. Run this file by typing `java -jar spigot-1.10.2.jar` (it might not be that exact name - you can list files in the directory by typing `dir` (Windows) or `ls` (Mac and Linux).
5. The server will start up then shut down very shortly afterwards. You'll need to edit a file called `eula.txt` - change `eula=false` to `eula=true` and save the file.
6. Run the `java -jar spigot-1.10.2.jar` command again - this time the server will start up. Shut it down by typing `stop` at the server prompt.
7. Download the [scriptcraft.jar][dl] plugin and save it to the `plugins` directory and restart the server by typing `java -jar spigot-1.10.2.jar`.
9. At the server prompt type `js 1 + 1` and hit enter. The result `2` should be displayed.
Congratulations - you've just installed your Custom Minecraft Server and are ready to begin writing your first mod!
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# Post Install
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Once installed, a new scriptcraft/plugins directory is automatically
created. All files in the scriptcraft/plugins directory will be
automatically loaded when the server starts. *Only players who are
ops can use this plugin.* You can grant a player `op` privileges by
typing 'op <username>' (replacing <username> with your own Minecraft
user name) at the server console prompt or by adding the player's
username to the ops.txt file in your server directory.
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Launch the server, then launch the Minecraft client and create a new
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server connection. The IP address will be `localhost` . Once you've
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connected to your server and have entered the game, look at a
ground-level block and type &hellip;
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/js up().box( blocks.wool.black, 4, 9, 1 )
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&hellip; This will create a black monolith structure 4 blocks wide by 9
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blocks high by 1 block long. Take a look at the
src/main/javascript/drone/drone.js file to see what ScriptCraft's
drone can do.
If you're interested in customizing minecraft beyond just creating new buildings, take a look at [the homes mod][homes] for an example of how to create a more fully-featured JavaScript plugin for Minecraft.
## Your first mod - Howling blocks
Listed below is a simple mod that will make blocks 'Howl' when they're broken.
``` javascript
// copy and paste this code to a new file named 'scriptcraft/plugins/howling-blocks.js'
var sounds = require('sounds');
function howl(event){
sounds.entityWolfHowl( event.block );
}
events.blockBreak( howl );
```
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A JavaScript mod for minecraft is just a JavaScript source file (.js)
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located in the scriptcraft/plugins directory. All .js files in this
directory will be automatically loaded when the server starts.
To get started writing your own mod, take a look at some of the
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[examples][examples].
[homes]: src/main/js/plugins/homes/homes.js
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[examples]: src/main/js/plugins/examples/
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# Additional information
Because the SpigotMC API is open, all of the SpigotMC API is accessible
via javascript once the ScriptCraft plugin is loaded. There are a
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couple of useful Java objects exposed via javascript in the
ScriptCraft plugin &hellip;
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* `__plugin` &ndash; the ScriptCraft Plugin itself. This is a useful
starting point for accessing other SpigotMC objects. The `__plugin`
object is of type [org.bukkit.plugin.Plugin][api] and all
of its properties and methods are accessible. For example &hellip; `js
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__plugin.name` returns the plugin's name
(JavaScript is more concise than the equivalent Java code:
`__plugin.getName()` ).
* `server` &ndash; The top-level org.bukkit.Server object. See the [SpigotMC API docs][spigotapi] for reference.
* `self` &ndash; The player/command-block or server console operator who
invoked the `/js` command. Again, this is a good jumping off point for
diving into the SpigotMC API.
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[dl]: http://scriptcraftjs.org/download/latest
[api]: https://hub.spigotmc.org/javadocs/spigot/
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[ic]: http://canarymod.net/releases
[spigotdl]: https://hub.spigotmc.org/jenkins/job/BuildTools/lastSuccessfulBuild/artifact/target/BuildTools.jar
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[cmapi]: https://ci.visualillusionsent.net/job/CanaryLib/javadoc/
[spigotapi]: https://hub.spigotmc.org/javadocs/spigot/
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# Contributing
If you would like to contribute source code and/or documentation changes please [read contributing.md][contrib]
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## Status
[![Travis Build Status](https://api.travis-ci.org/walterhiggins/ScriptCraft.png)](http://travis-ci.org/walterhiggins/ScriptCraft)
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# Bukkit Configuration
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## (You can ignore this if using CanaryMod)
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ScriptCraft works with Bukkit Plugin and uses the Bukkit Configuration
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API. On first loading, ScriptCraft will create a config.yml file in
the plugins/scriptcraft/ directory. This file looks like this &hellip;
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extract-js:
plugins: true
modules: true
lib: true
This file allows scriptcraft admins to turn on or off re-unzipping of the `modules`,
`plugins` and `lib` folders when deploying a new version of
ScriptCraft. It's strongly recommended that the `lib` directory always
be set to true to get the latest core ScriptCraft code . The modules
and plugins directories are optional and not part of ScriptCraft core.
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# Further Reading
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ScriptCraft has [its own website][website] with further information.
* To get started using ScriptCraft to Learn JavaScript, read [The Young Person's Guide to Programming in Minecraft][yp].
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* The ScriptCraft [API documentation][api].
* To delve deeper into creating your own minecraft mod for use by others, read [Creating a complete Minecraft Mod in JavaScript][mm].
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* Take a look at some [examples][ex].
* Buy the Official ScriptCraft Book [A Beginner's Guide to Writing Minecraft Plugins in Javascript][book].
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<a href="http://www.amazon.co.uk/gp/product/0133930149/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0133930149&linkCode=as2&tag=walthigg-21&linkId=P3LLGB3WTATW57AZ"><img border="0" src="http://ws-eu.amazon-adsystem.com/widgets/q?_encoding=UTF8&ASIN=0133930149&Format=_SL250_&ID=AsinImage&MarketPlace=GB&ServiceVersion=20070822&WS=1&tag=walthigg-21" ></a><img src="http://ir-uk.amazon-adsystem.com/e/ir?t=walthigg-21&l=as2&o=2&a=0133930149" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" />
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You can find more information about [ScriptCraft on my blog][blog].
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# Additional Resources
CoderDojo Athenry have some [excellent tutorials][cda] for younger
programmers who have used [Scratch][scr] and are interested in Modding
Minecraft using JavaScript. In particular, they have an excellent
[Scratch - to - JavaScript][sj] tutorial which explains Scratch
programs and how to do the same thing in JavaScript.
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I highly recommend the series of [tutorials provided by CoderDojo Athenry][cda].
Developer Chris Cacciatore has created some interesting tools using ScriptCraft &hellip;
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* [A wolf-bot][wb]
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* [L-Systems (Large-scale fractal structures in Minecraft)][ls]
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# Docker
To launch a container with CanaryMod and ScriptCraft you can just do
docker run -p 25565:25565 -it tclavier/scriptcraft
You can find all files used to build this container in github project: [docker-scriptcraft](https://github.com/tclavier/docker-scriptcraft)
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[wb]: https://github.com/cacciatc/wolfbot
[ls]: https://github.com/cacciatc/scriptcraft-lsystems
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[blog]: http://walterhiggins.net/blog/cat-index-scriptcraft.html
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[yp]: docs/YoungPersonsGuideToProgrammingMinecraft.md
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[mm]: docs/Anatomy-of-a-Plugin.md
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[api]: docs/API-Reference.md
[website]: http://scriptcraftjs.org/
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[cd]: http://coderdojo.com/
[scr]: http://scratch.mit.edu/
[cda]: http://cdathenry.wordpress.com/category/modderdojo/
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[ytpl]: http://www.youtube.com/watch?v=DDp20SKm43Y&list=PL4Tw0AgXQZH5BiFHqD2hXyXQi0-qFbGp_
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[ex]: src/main/js/plugins/examples
[contrib]: contributing.md
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[sj]: http://cdathenry.wordpress.com/2013/10/12/modderdojo-week-2-moving-from-scratch-to-javascript/
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[book]: http://www.peachpit.com/store/beginners-guide-to-writing-minecraft-plugins-in-javascript-9780133930146