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README.md
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@ -1,99 +1,109 @@
ScriptCraft ScriptCraft
=========== ===========
A Minecraft mod that lets you create mods using Javascript.
A Minecraft mod that lets you build using Javascript.
(Update 2013/01/04 - I've created a Bukkit Plugin as this makes installing the mod much easier - assuming you're running a CraftBukkit server - which I recommend. See [Bukkit Support][buk] for details).
Description Description
=========== ===========
The ScriptCraft mod lets you enter javascript commands at the in-game prompt. ScriptCraft is a plugin for Minecraft Servers which lets
To bring up the in-game prompt press the `/` key then type `js ` followed by any javascript statement. operators/administrators/plug-in authors customize the game using
E.g. `/js 1+1` will print 2. Javascript. ScriptCraft makes it easier to create your own mods. Mods
ScriptCraft uses Rhino (The built-in javascript interpreter that comes with current versions of Java). can be written in Javscript and use the full Bukkit API. 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 javascript statement. E.g. `/js 1+1` will print
2.
As of Dec 27 2012, the ScriptCraft mod includes just a few built-in objects and functions to make building easier. ScriptCraft also includes many objects and functions to make building and modding easier using Javascript.
* echo( message ) - displays a message on the player's screen. e.g. `/js echo( 1 + 3 )` or `/js echo ("Hello World")` * echo( message ) - displays a message on the player's screen. e.g. `/js echo( 1 + 3 )` or `/js echo ("Hello World")`
* getMousePos() - A function which returns the current position of the cross-hairs (if a block is targeted) * getMousePos() - A function which returns the current position of the cross-hairs (if a block is targeted)
* getPlayerPos() - A function which returns the current position of the player. * getPlayerPos() - A function which returns the current position of the player.
* putBlock( x, y, z, blockId, metaData ) - A function which lets you place a block anywhere (if no coordinates are given the block the player is currently looking at is replaced). * putBlock( x, y, z, blockId, metaData ) - A function which lets you place a block anywhere (if no coordinates are given the block the player is currently looking at is replaced).
* getBlock( x, y, z ) - returns the blockId and metadata at the given location (if no coordinates are given the cross-hair location is used) * getBlock( x, y, z ) - returns the blockId and metadata at the given location (if no coordinates are given the cross-hair location is used)
* putSign( String[] texts, x, y, z, blockId, metaData ) - A function which lets you place a sign. * putSign( String[] texts, x, y, z, blockId, metaData ) - A function which lets you place a sign.
The above primitives can be used to create buildings which would otherwise be time-consuming to create manually. The above primitives can be used to create buildings which would
It is highly recommended using the attached [drone][drone] javascript plugin which provides a fluent API for building. otherwise be time-consuming to create manually. It is highly
The Javascript `Drone` class provides a much richer API which can be used to construct buildings. See the attached recommended using the attached [drone][drone] javascript plugin which
[cottage.js][cottage] file for an example of you can use the sample Drone plugin to create new buildings in Minecraft. provides a fluent API for building. The Javascript `Drone` class
provides a much richer API which can be used to construct
buildings. See the attached [cottage.js][cottage] file for an example
of you can use the sample Drone plugin to create new buildings in
Minecraft.
[drone]: https://github.com/walterhiggins/ScriptCraft/tree/master/js-plugins/drone [drone]: https://github.com/walterhiggins/ScriptCraft/tree/master/src/main/javascript/drone/drone.js
[cottage]: https://github.com/walterhiggins/ScriptCraft/tree/master/js-plugins/drone/cottage.js [cottage]: https://github.com/walterhiggins/ScriptCraft/tree/master/src/main/javascript//drone/cottage.js
Functions in MCP version of Scriptcraft (no longer supported). Prerequisites
* help() - Brings up a short help message.
* load('path-to-script.js') - lets you load and execute any javascript source file. In the context of script files, the `__script` variable will refer to the current script filename and `__folder` refers to the directory in which the current script resides. In the MCP (Minecraft Coder Pack) version of ScriptCraft, calling `load()` with no parameters will bring up a File Chooser dialog. This feature was removed from the multi-player bukkit version of ScriptCraft.
Prerequisites
============= =============
(Minecraft Coder Pack Only - [Bukkit users go here][buk] ) You will need to have Java version 6 or 7 installed on your
machine. Check the version by typing `java -version` at a command
prompt. You will need to [install Bukkit][ib] on your machine. Bukkit
is a version of Minecraft (server) that makes it easy to install
plugins and customize Minecraft. You can [download the CraftBukkit
server here.][cbdl]
You will need to install Rhino (A javascript implementation for java) if it is not already installed. Type... Installation
============
If you don't want to compile from source, you can [download the
compiled plugin here][dl] and copy it the craftbukkit's plugins
directory.
java org.mozilla.javascript.tools.shell.Main Post Install
============
... at a command prompt to see if Rhino is already installed. If Rhino is installed you should see the following... Once installed, a new js-plugins directory is automatically created in
the same directory as the plugins folder. All files in the js-plugins
directory will be automatically loaded when CraftBukkit starts. *Only
players who are ops can use this plugin.* You can grant a player `op`
privileges by typing 'op <username>' at the server console prompt or
by adding the player's username to the ops.txt file in your
craftbukkit directory.
js> Launch CraftBukkit, then launch the Minecraft client and create a new
server connection. The IP address will be `localhost` . Once you've
If Rhino is not already installed you can [download it][1], unzip it and copy the js.jar file to ... connected to your bukkit server and have entered the game, look at a
ground-level block and type ...
* Macintosh - /System/Library/Java/Extensions/ /js up().box('35:15', 4, 9, 1)
* Windows - C:\jdk\jre\lib\ext (assuming the Java Dev Kit has been installed in c:\jdk)
* Linux (Ubuntu) - /usr/lib/jvm/java-6-openjdk-i386/jre/lib/ext/ or /usr/lib/jvm/java-7-oracle/jre/lib/ext/ for Oracle Java
[1]: https://developer.mozilla.org/en/RhinoDownload ... This will create a black monolith structure 4 blocks wide by 9
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 [./homes/homes.js][homes]
and [./chat/color.js][chatcolor] for examples of how to create a
javascript plugin for Minecraft.
You will also need to install the Minecraft Coder Pack (CraftBukkit Users - please skip this section and [go here instead][buk]) and be comfortable installing a Minecraft Mod. [ho]: blob/master/src/main/javascript/homes/homes.js
You can get the Minecraft Coder Pack here... [ch]: blob/master/src/main/javascript/chat/color.js
[ar]: blob/master/src/main/javascript/arrows/arrows.js
[si]: blob/master/src/main/javascript/signs/menu.js
http://mcp.ocean-labs.de/index.php/Main_Page A Javascript mod for minecraft is just a javascript source file (.js)
located in the craftbukkit/js-plugins directory. All .js files in this
directory will be automatically loaded when the craftbukkit server
starts. To get started writing your own mod, first take a look at some
of the existing mods in the [homes][ho], [chat][ch], [arrows][ar] and
[signs][si] directories. The chat/color.js mod is probably the
simplest mod to get started with.
... You will need to follow MCP's instructions to decompile your minecraft.jar file. Additional information
======================
Because the Bukkit API is open, all of the Bukkit API is accessible
via javascript once the ScriptCraft plugin is loaded. For example, in
addition to the functions provided in the MCP version of ScriptCraft,
there are a couple of useful Java objects exposed via javascript in
the Bukkit ScriptCraft plugin...
Installing * `plugin` - the ScriptCraft Plugin itself. This is a useful starting point for accessing other Bukkit objects. The `plugin` object is of type [org.bukkit.plugin.java.JavaPlugin][api] and all of its properties and methods are accessible. For example... `js plugin.getServer().getMotd()` returns the server's message of the day.
========== * `self` - 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 Bukkit API.
(Minecraft Coder Pack only - [Bukkit users go here][buk]. ) * `bukkit` - The top-level Bukkit object. See the [Bukkit API docs][bukapi] for reference.
Once you've installed Minecraft Coder Pack (MCP) and Rhino... [dl]: http://walterhiggins.net/blog/files/scriptcraft/
1. Copy the CommandScript.java file to the src/minecraft/net/minecraft/src/ located in the directory where you installed MCP. [api]: http://jd.bukkit.org/apidocs/org/bukkit/plugin/java/JavaPlugin.html
2. Create a new directory called _ScriptCraft_ on your C:\ drive (Windows) or your home directory (Linux/Max), and copy all of the .js files provided. [ib]: http://wiki.bukkit.org/Setting_up_a_server
3. If you are on a Windows computer ... [cbdl]: http://dl.bukkit.org/downloads/craftbukkit/
1. Launch Notepad (or your favourite text editor) and open file src/minecraft/net/minecraft/src/ServerCommandManager.java [bukapi]: http://jd.bukkit.org/apidocs/
2. Insert a new line after `this.registerCommand(new CommandTime());`
3. type `this.registerCommand(new CommandScript());`
4. Save the file and close the editor.
4. If you are on a Linux or Mac OS X computer...
1. Copy ServerCommandManager.patch to the directory where you installed MCP.
2. Open a terminal window and `cd` to the directory where you installed MCP.
3. enter the following command `patch src/minecraft/net/minecraft/src/ServerCommandManager.java ServerCommandManager.patch`
5. Open a Command Prompt (windows) or Terminal (Linux/Mac), go to the MCP directory and run `recompile.bat` (windows) or `./recompile.sh` (Linux/Mac)
6. Run `reobfuscate.bat` (windows) or `./reobfuscate.sh` (Linux/Mac).
7. Follow MCP's instructions for copying the obfuscated files and rebuilding the minecraft.jar file that is in %appdata%/minecraft/bin (windows), ~/Library/Application Support/Minecraft/bin (Mac) or ~/.minecraft/bin (Linux).
Getting Started
===============
(Minecraft Coder pack version only - [Bukkit users go here][buk] )
Once you've installed the mod, launch Minecraft and type `/js load()` and load the `cottage.js` file. Once the cottage.js file is loaded you can create a new cottage by typing `/js cottage()`.
Take a look over the cottage.js file to see how the Drone module can be used to easily create buildings. You can even create a whole row of cottages using the following in-game command...
/js var d = new Drone(); for (i=0; i < 20; i++){ d.cottage().right(10); }
The above code creates a new `Drone` object and uses a `for` loop to create multiple cottages. Keep a Minecraft Block reference handy - there's one here ...
http://www.minecraftinfo.com/idlist.htm
Further Reading Further Reading
=============== ===============

7
src/main/java/net/walterhiggins/scriptcraft/ScriptCraftPlugin.java
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@ -14,8 +14,7 @@ import java.util.ArrayList;
import org.bukkit.plugin.java.JavaPlugin; import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.command.*; import org.bukkit.command.*;
import org.bukkit.Bukkit;
public class ScriptCraftPlugin extends JavaPlugin public class ScriptCraftPlugin extends JavaPlugin
{ {
@ -96,7 +95,7 @@ public class ScriptCraftPlugin extends JavaPlugin
File boot = new File(JS_PLUGINS_DIR + "/core/_scriptcraft.js"); File boot = new File(JS_PLUGINS_DIR + "/core/_scriptcraft.js");
this.engine = factory.getEngineByName("JavaScript"); this.engine = factory.getEngineByName("JavaScript");
this.engine.put("__engine",engine); this.engine.put("__engine",engine);
this.engine.put("__plugin",this); this.engine.put("plugin",this);
this.engine.put("__script",boot.getCanonicalPath().replaceAll("\\\\","/")); this.engine.put("__script",boot.getCanonicalPath().replaceAll("\\\\","/"));
this.engine.eval(new FileReader(boot)); this.engine.eval(new FileReader(boot));
}catch(Exception e){ }catch(Exception e){
@ -142,7 +141,7 @@ public class ScriptCraftPlugin extends JavaPlugin
result = true; result = true;
} }
if (result){ if (result){
this.engine.put("__self",sender); this.engine.put("self",sender);
try{ try{
Object resultObj = this.engine.eval(javascriptCode); Object resultObj = this.engine.eval(javascriptCode);
if (resultObj != null){ if (resultObj != null){

12
src/main/javascript/alias/alias.js
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@ -36,26 +36,26 @@ command("alias",function(params){
this function also intercepts command options for /jsp this function also intercepts command options for /jsp
*/ */
if (params[0] === "help"){ if (params[0] === "help"){
__self.sendMessage(alias.help()); self.sendMessage(alias.help());
return; return;
} }
if (params[0] === "set"){ if (params[0] === "set"){
var aliasCmd = params[1]; var aliasCmd = params[1];
var cmdStr = params.slice(2).join(' '); var cmdStr = params.slice(2).join(' ');
var cmds = cmdStr.split(';'); var cmds = cmdStr.split(';');
alias.set(__self,aliasCmd,cmds); alias.set(self,aliasCmd,cmds);
return; return;
} }
if (params[0] === "delete"){ if (params[0] === "delete"){
alias.remove(__self,params[1]); alias.remove(self,params[1]);
return ; return ;
} }
if (params[0] === "list"){ if (params[0] === "list"){
__self.sendMessage(alias.list(__self)); self.sendMessage(alias.list(self));
return; return;
} }
var playerHasAliases = alias.store.players[__self.name]; var playerHasAliases = alias.store.players[self.name];
if (!playerHasAliases) if (!playerHasAliases)
return false; return false;
// is it an alias? // is it an alias?
@ -66,7 +66,7 @@ command("alias",function(params){
// fill in template // fill in template
var cmd = commands[i]; var cmd = commands[i];
cmd = cmd.replace(/{([0-9]*)}/g,function(dummy,index){ return params[index];}) cmd = cmd.replace(/{([0-9]*)}/g,function(dummy,index){ return params[index];})
__self.performCommand(cmd); self.performCommand(cmd);
} }
return true; return true;

2
src/main/javascript/arrows/arrows.js
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@ -62,7 +62,7 @@ arrows.store.players = arrows.store.players || {};
arrows[type] = (function(n){ arrows[type] = (function(n){
return function(player){ return function(player){
if (typeof player == "undefined") if (typeof player == "undefined")
player = __self; player = self;
var playerName = null; var playerName = null;
if (typeof player == "string") if (typeof player == "string")
playerName = player; playerName = player;

6
src/main/javascript/chat/color.js
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@ -38,15 +38,15 @@ ready(function()
var colorNamesInColor = []; var colorNamesInColor = [];
for (var i = 0;i < colors.length;i++) for (var i = 0;i < colors.length;i++)
colorNamesInColor[i] = "§"+colorCodes[colors[i]] + colors[i]; colorNamesInColor[i] = "§"+colorCodes[colors[i]] + colors[i];
__self.sendMessage("valid chat colors are " + colorNamesInColor.join(", ")); self.sendMessage("valid chat colors are " + colorNamesInColor.join(", "));
}; };
command("list_colors", listColors); command("list_colors", listColors);
command("chat_color",function(params){ command("chat_color",function(params){
var color = params[0]; var color = params[0];
if (colorCodes[color]){ if (colorCodes[color]){
chat.setColor(__self,color); chat.setColor(self,color);
}else{ }else{
__self.sendMessage(color + " is not a valid color"); self.sendMessage(color + " is not a valid color");
listColors(); listColors();
} }
},colors); },colors);