# ScriptCraft API Reference
Walter Higgins
[walter.higgins@gmail.com][email]
[email]: mailto:walter.higgins@gmail.com?subject=ScriptCraft_API_Reference
## Table of Contents
* [Modules in Scriptcraft](#modules-in-scriptcraft)
* [Module Loading](#module-loading)
* [The plugins directory](#the-plugins-directory)
* [The modules directory](#the-modules-directory)
* [The lib directory](#the-lib-directory)
* [plugins sub-directories](#plugins-sub-directories)
* [Global variables](#global-variables)
* [__plugin variable](#__plugin-variable)
* [server variable](#server-variable)
* [self variable](#self-variable)
* [config variable](#config-variable)
* [events variable](#events-variable)
* [Module variables](#module-variables)
* [__filename variable](#__filename-variable)
* [__dirname variable](#__dirname-variable)
* [Global functions](#global-functions)
* [echo function](#echo-function)
* [require() function](#require-function)
* [scload() function](#scload-function)
* [scsave() function](#scsave-function)
* [plugin() function](#plugin-function)
* [command() function](#command-function)
* [setTimeout() function](#settimeout-function)
* [clearTimeout() function](#cleartimeout-function)
* [setInterval() function](#setinterval-function)
* [clearInterval() function](#clearinterval-function)
* [refresh() function](#refresh-function)
* [addUnloadHandler() function](#addunloadhandler-function)
* [isOp() function](#isop-function)
* [require - Node.js-style module loading in ScriptCraft](#require---nodejs-style-module-loading-in-scriptcraft)
* [math.js](#mathjs)
* [inc.js](#incjs)
* [program.js](#programjs)
* [Important](#important)
* [module name resolution](#module-name-resolution)
* [events Module](#events-module)
* [events.on() static method](#eventson-static-method)
* [bukkit](#bukkit)
* [console global variable](#console-global-variable)
* [Example](#example)
* [Using string substitutions](#using-string-substitutions)
* [Events Helper Module](#events-helper-module)
* [Usage](#usage)
* [events.minecartActivate()](#eventsminecartactivate)
* [events.villagerTradeUnlock()](#eventsvillagertradeunlock)
* [events.mobTarget()](#eventsmobtarget)
* [events.chickenLayEgg()](#eventschickenlayegg)
* [events.potionEffectFinish()](#eventspotioneffectfinish)
* [events.entityMove()](#eventsentitymove)
* [events.hangingEntityDestroy()](#eventshangingentitydestroy)
* [events.vehicleCollision()](#eventsvehiclecollision)
* [events.potionEffectApplied()](#eventspotioneffectapplied)
* [events.vehicleDestroy()](#eventsvehicledestroy)
* [events.vehicleEnter()](#eventsvehicleenter)
* [events.damage()](#eventsdamage)
* [events.entityMount()](#eventsentitymount)
* [events.slimeSplit()](#eventsslimesplit)
* [events.endermanDropBlock()](#eventsendermandropblock)
* [events.itemTouchGround()](#eventsitemtouchground)
* [events.entitySpawn()](#eventsentityspawn)
* [events.endermanPickupBlock()](#eventsendermanpickupblock)
* [events.vehicleDamage()](#eventsvehicledamage)
* [events.entityLightningStruck()](#eventsentitylightningstruck)
* [events.entityDespawn()](#eventsentitydespawn)
* [events.vehicleMove()](#eventsvehiclemove)
* [events.projectileHit()](#eventsprojectilehit)
* [events.entityDeath()](#eventsentitydeath)
* [events.entityTame()](#eventsentitytame)
* [events.vehicleExit()](#eventsvehicleexit)
* [events.dimensionSwitch()](#eventsdimensionswitch)
* [events.foodLevel()](#eventsfoodlevel)
* [events.bookEdit()](#eventsbookedit)
* [events.playerListEntry()](#eventsplayerlistentry)
* [events.eat()](#eventseat)
* [events.playerIdle()](#eventsplayeridle)
* [events.enchant()](#eventsenchant)
* [events.playerArmSwing()](#eventsplayerarmswing)
* [events.teleport()](#eventsteleport)
* [events.anvilUse()](#eventsanviluse)
* [events.portalUse()](#eventsportaluse)
* [events.foodSaturation()](#eventsfoodsaturation)
* [events.connection()](#eventsconnection)
* [events.playerRespawned()](#eventsplayerrespawned)
* [events.armorBroken()](#eventsarmorbroken)
* [events.levelUp()](#eventslevelup)
* [events.blockRightClick()](#eventsblockrightclick)
* [events.itemDrop()](#eventsitemdrop)
* [events.playerRespawning()](#eventsplayerrespawning)
* [events.craft()](#eventscraft)
* [events.experience()](#eventsexperience)
* [events.signChange()](#eventssignchange)
* [events.healthChange()](#eventshealthchange)
* [events.disconnection()](#eventsdisconnection)
* [events.gameModeChange()](#eventsgamemodechange)
* [events.preConnection()](#eventspreconnection)
* [events.villagerTrade()](#eventsvillagertrade)
* [events.returnFromIdle()](#eventsreturnfromidle)
* [events.slotClick()](#eventsslotclick)
* [events.entityRightClick()](#eventsentityrightclick)
* [events.foodExhaustion()](#eventsfoodexhaustion)
* [events.chat()](#eventschat)
* [events.itemPickup()](#eventsitempickup)
* [events.bedExit()](#eventsbedexit)
* [events.blockPlace()](#eventsblockplace)
* [events.toolBroken()](#eventstoolbroken)
* [events.kick()](#eventskick)
* [events.playerDeath()](#eventsplayerdeath)
* [events.blockLeftClick()](#eventsblockleftclick)
* [events.blockDestroy()](#eventsblockdestroy)
* [events.bedEnter()](#eventsbedenter)
* [events.signShow()](#eventssignshow)
* [events.inventory()](#eventsinventory)
* [events.playerMove()](#eventsplayermove)
* [events.itemUse()](#eventsitemuse)
* [events.ban()](#eventsban)
* [events.statGained()](#eventsstatgained)
* [events.smeltBegin()](#eventssmeltbegin)
* [events.treeGrow()](#eventstreegrow)
* [events.chunkCreated()](#eventschunkcreated)
* [events.liquidDestroy()](#eventsliquiddestroy)
* [events.chunkLoaded()](#eventschunkloaded)
* [events.pistonRetract()](#eventspistonretract)
* [events.smelt()](#eventssmelt)
* [events.blockUpdate()](#eventsblockupdate)
* [events.portalDestroy()](#eventsportaldestroy)
* [events.ignition()](#eventsignition)
* [events.redstoneChange()](#eventsredstonechange)
* [events.weatherChange()](#eventsweatherchange)
* [events.chunkCreation()](#eventschunkcreation)
* [events.hopperTransfer()](#eventshoppertransfer)
* [events.chunkUnload()](#eventschunkunload)
* [events.blockGrow()](#eventsblockgrow)
* [events.dispense()](#eventsdispense)
* [events.blockDropXp()](#eventsblockdropxp)
* [events.fireworkExplode()](#eventsfireworkexplode)
* [events.leafDecay()](#eventsleafdecay)
* [events.pistonExtend()](#eventspistonextend)
* [events.noteBlockPlay()](#eventsnoteblockplay)
* [events.lightningStrike()](#eventslightningstrike)
* [events.decorate()](#eventsdecorate)
* [events.explosion()](#eventsexplosion)
* [events.tNTActivate()](#eventstntactivate)
* [events.timeChange()](#eventstimechange)
* [events.flow()](#eventsflow)
* [events.portalCreate()](#eventsportalcreate)
* [events.blockPhysics()](#eventsblockphysics)
* [events.playerCommand()](#eventsplayercommand)
* [events.consoleCommand()](#eventsconsolecommand)
* [events.commandBlockCommand()](#eventscommandblockcommand)
* [events.loadWorld()](#eventsloadworld)
* [events.permissionCheck()](#eventspermissioncheck)
* [events.serverGuiStart()](#eventsserverguistart)
* [events.unloadWorld()](#eventsunloadworld)
* [events.pluginDisable()](#eventsplugindisable)
* [events.pluginEnable()](#eventspluginenable)
* [events.serverTick()](#eventsservertick)
* [events.serverListPing()](#eventsserverlistping)
* [events.serverShutdown()](#eventsservershutdown)
* [Blocks Module](#blocks-module)
* [Examples](#examples)
* [Fireworks Module](#fireworks-module)
* [Examples](#examples-1)
* [Asynchronous Input Module](#asynchronous-input-module)
* [The recipes module](#the-recipes-module)
* [Example](#example-1)
* [Http Module](#http-module)
* [http.request() function](#httprequest-function)
* [sc-mqtt module](#sc-mqtt-module)
* [Usage](#usage-1)
* [Signs Module](#signs-module)
* [signs.menu() function](#signsmenu-function)
* [signs.getTargetedBy() function](#signsgettargetedby-function)
* [Sounds Module](#sounds-module)
* [Usage (Bukkit) :](#usage-bukkit-)
* [Utilities Module](#utilities-module)
* [utils.player() function](#utilsplayer-function)
* [utils.locationToJSON() function](#utilslocationtojson-function)
* [utils.locationToString() function](#utilslocationtostring-function)
* [utils.locationFromJSON() function](#utilslocationfromjson-function)
* [utils.getPlayerPos() function](#utilsgetplayerpos-function)
* [utils.getMousePos() function](#utilsgetmousepos-function)
* [utils.foreach() function](#utilsforeach-function)
* [utils.nicely() function](#utilsnicely-function)
* [utils.at() function](#utilsat-function)
* [utils.find() function](#utilsfind-function)
* [utils.serverAddress() function](#utilsserveraddress-function)
* [utils.watchFile() function](#utilswatchfile-function)
* [utils.watchDir() function](#utilswatchdir-function)
* [utils.unwatchFile() function](#utilsunwatchfile-function)
* [utils.unwatchDir() function](#utilsunwatchdir-function)
* [utils.array() function](#utilsarray-function)
* [utils.players() function](#utilsplayers-function)
* [utils.playerNames() function](#utilsplayernames-function)
* [utils.stat() function](#utilsstat-function)
* [Drone Plugin](#drone-plugin)
* [Constructing a Drone Object](#constructing-a-drone-object)
* [Drone.box() method](#dronebox-method)
* [Drone.box0() method](#dronebox0-method)
* [Drone.boxa() method](#droneboxa-method)
* [Drone Movement](#drone-movement)
* [Drone Positional Info](#drone-positional-info)
* [Drone Markers](#drone-markers)
* [Drone.prism() method](#droneprism-method)
* [Drone.prism0() method](#droneprism0-method)
* [Drone.cylinder() method](#dronecylinder-method)
* [Drone.cylinder0() method](#dronecylinder0-method)
* [Drone.arc() method](#dronearc-method)
* [Drone.door() method](#dronedoor-method)
* [Drone.door_iron() method](#dronedoor_iron-method)
* [Drone.door2() method](#dronedoor2-method)
* [Drone.door2_iron() method](#dronedoor2_iron-method)
* [Drone.sign() method](#dronesign-method)
* [Drone Trees methods](#drone-trees-methods)
* [Drone.garden() method](#dronegarden-method)
* [Drone.rand() method](#dronerand-method)
* [Copy & Paste using Drone](#copy--paste-using-drone)
* [Drone.copy() method](#dronecopy-method)
* [Drone.paste() method](#dronepaste-method)
* [Chaining](#chaining)
* [Drone Properties](#drone-properties)
* [Extending Drone](#extending-drone)
* [Drone.extend() static method](#droneextend-static-method)
* [Drone Constants](#drone-constants)
* [Drone.times() Method](#dronetimes-method)
* [Drone.blocktype() method](#droneblocktype-method)
* [Drone.rainbow() method](#dronerainbow-method)
* [Drone.sphere() method](#dronesphere-method)
* [Drone.sphere0() method](#dronesphere0-method)
* [Drone.hemisphere() method](#dronehemisphere-method)
* [Drone.hemisphere0() method](#dronehemisphere0-method)
* [Drone.spiral_stairs() method](#dronespiral_stairs-method)
* [Example Plugin #1 - A simple extension to Minecraft.](#example-plugin-1---a-simple-extension-to-minecraft)
* [Usage:](#usage-2)
* [Example Plugin #2 - Making extensions available for all players.](#example-plugin-2---making-extensions-available-for-all-players)
* [Usage:](#usage-3)
* [Example Plugin #3 - Limiting use of commands to operators only.](#example-plugin-3---limiting-use-of-commands-to-operators-only)
* [Usage:](#usage-4)
* [Example Plugin #4 - Using parameters in commands.](#example-plugin-4---using-parameters-in-commands)
* [Usage:](#usage-5)
* [Example Plugin #5 - Re-use - Using your own and others modules.](#example-plugin-5---re-use---using-your-own-and-others-modules)
* [Usage:](#usage-6)
* [Example Plugin #6 - Re-use - Using 'utils' to get Player objects.](#example-plugin-6---re-use---using-utils-to-get-player-objects)
* [Usage:](#usage-7)
* [Example Plugin #7 - Listening for events, Greet players when they join the game.](#example-plugin-7---listening-for-events-greet-players-when-they-join-the-game)
* [Arrows Plugin](#arrows-plugin)
* [Usage:](#usage-8)
* [Spawn Plugin](#spawn-plugin)
* [Usage](#usage-9)
* [alias Plugin](#alias-plugin)
* [Examples](#examples-2)
* [Classroom Plugin](#classroom-plugin)
* [classroom.allowScripting() function](#classroomallowscripting-function)
* [Commando Plugin](#commando-plugin)
* [Description](#description)
* [Example hi-command.js](#example-hi-commandjs)
* [Example - timeofday-command.js](#example---timeofday-commandjs)
* [Caveats](#caveats)
* [homes Plugin](#homes-plugin)
* [Basic options](#basic-options)
* [Social options](#social-options)
* [Administration options](#administration-options)
* [NumberGuess mini-game:](#numberguess-mini-game)
* [Description](#description-1)
* [Example](#example-2)
* [Cow Clicker Mini-Game](#cow-clicker-mini-game)
* [How to Play](#how-to-play)
* [Rules](#rules)
* [Gameplay Mechanics](#gameplay-mechanics)
* [Items module](#items-module)
* [Usage](#usage-10)
## Modules in Scriptcraft
ScriptCraft has a simple module loading system. In ScriptCraft, files
and modules are in one-to-one correspondence. As an example, foo.js
loads the module circle.js in the same directory.
*ScriptCraft now uses the same module system as Node.js - see [Node.js Modules][njsmod] for more details.*
[njsmod]: http://nodejs.org/api/modules.html
The contents of foo.js:
```javascript
var circle = require('./circle.js');
console.log( 'The area of a circle of radius 4 is '
+ circle.area(4));
```
The contents of circle.js:
```javascript
var PI = Math.PI;
exports.area = function (r) {
return PI * r * r;
};
exports.circumference = function (r) {
return 2 * PI * r;
};
```
The module circle.js has exported the functions area() and
circumference(). To add functions and objects to the root of your
module, you can add them to the special exports object.
Variables local to the module will be private, as though the module
was wrapped in a function. In this example the variable PI is private
to circle.js.
If you want the root of your module's export to be a function (such as
a constructor) or if you want to export a complete object in one
assignment instead of building it one property at a time, assign it to
module.exports instead of exports.
## Module Loading
When the ScriptCraft Java plugin is first installed, a new
subdirectory is created in the craftbukkit/plugins directory. If your
craftbukkit directory is called 'craftbukkit' then the new
subdirectories will be ...
* craftbukkit/plugins/scriptcraft/
* craftbukkit/plugins/scriptcraft/plugins
* craftbukkit/plugins/scriptcraft/modules
* craftbukkit/plugins/scriptcraft/lib
... The `plugins`, `modules` and `lib` directories each serve a different purpose.
### The plugins directory
At server startup the ScriptCraft Java plugin is loaded and begins
automatically loading and executing all of the modules (javascript
files with the extension `.js`) it finds in the `scriptcraft/plugins`
directory. All modules in the plugins directory are automatically
loaded into the `global` namespace. What this means is that anything a
module in the `plugins` directory exports becomes a global
variable. For example, if you have a module greeting.js in the plugins
directory....
```javascript
exports.greet = function(player) {
echo(player, 'Hello ' + player.name);
};
```
... then `greet` becomes a global function and can be used at the
in-game (or server) command prompt like so...
/js greet(self)
... This differs from how modules (in NodeJS and commonJS
environments) normally work. If you want your module to be exported
globally, put it in the `plugins` directory. If you don't want your
module to be exported globally but only want it to be used by other
modules, then put it in the `modules` directory instead. If you've
used previous versions of ScriptCraft and have put your custom
javascript modules in the `js-plugins` directory, then put them in the
`scriptcraft/plugins` directory. To summarise, modules in this directory are ...
* Automatically loaded and run at server startup.
* Anything exported by modules becomes a global variable.
### The modules directory
The module directory is where you should place your modules if you
don't want to export globally. In javascript, it's considered best
practice not to have too many global variables, so if you want to
develop modules for others to use, or want to develop more complex
mods then your modules should be placed in the `modules` directory.
*Modules in the `modules` directory are not automatically loaded at
startup*, instead, they are loaded and used by other modules/plugins
using the standard `require()` function. This is the key difference
between modules in the `plugins` directory and modules in the
`modules` directory. Modules in the `plugins` directory are
automatically loaded and exported in to the global namespace at server
startup, modules in the `modules` directory are not.
### The lib directory
Modules in the `lib` directory are for use by ScriptCraft and some
core functions for use by module and plugin developers are also
provided. The `lib` directory is for internal use by ScriptCraft.
Modules in this directory are not automatically loaded nor are they
globally exported.
### plugins sub-directories
As of December 24 2013, the `scriptcraft/plugins` directory has the following sub-directories...
* drone - Contains the drone module and drone extensions. Drone was the first scriptcraft module.
* mini-games - Contains mini-games
* arrows - The arrows module - Changes the behaviour of Arrows: Explosive, Fireworks, Teleportation etc.
* signs - The signs module (includes example signs) - create interactive signs.
* chat - The chat plugin/module
* alias - The alias plugin/module - for creating custom aliases for commonly-used commands.
* home - The home module - for setting homes and visiting other homes.
## Global variables
There are a couple of special javascript variables available in ScriptCraft...
### __plugin variable
The ScriptCraft JavaPlugin object.
### server variable
The Minecraft Server object
### self variable
The current player. (Note - this value should not be used in multi-threaded scripts or event-handling code - it's not thread-safe). This variable is only safe to use at the in-game prompt and should *never* be used in modules. For example you can use it here...
/js console.log(self.name)
... but not in any javascript module you create yourself or in any
event handling code. `self` is a temporary short-lived variable which
only exists in the context of the in-game or server command prompts.
### config variable
ScriptCraft configuration - this object is loaded and saved at startup/shutdown.
### events variable
The events object is used to add new event handlers to Minecraft.
## Module variables
The following variables are available only within the context of Modules. (not available at in-game prompt).
### __filename variable
The current file - this variable is only relevant from within the context of a Javascript module.
### __dirname variable
The current directory - this variable is only relevant from within the context of a Javascript module.
## Global functions
ScripCraft provides some global functions which can be used by all plugins/modules...
### echo function
The `echo()` function displays a message on the in-game screen.
#### Example
/js echo( self, 'Hello World')
For programmers familiar with Javascript web programming, an `alert`
function is also provided. `alert` works exactly the same as `echo`
e.g. `alert( self, 'Hello World')`.
### require() function
ScriptCraft's `require()` function is used to load modules. The `require()` function takes a module name as a parameter and will try to load the named module.
#### Parameters
* modulename - The name of the module to be loaded. Can be one of the following...
- A relative file path (with or without `.js` suffix)
- An absolute file path (with or without `.js` suffix)
- A relative directory path (uses node.js rules for directories)
- An absolute directory path (uses node.js rules for directories)
- A name of the form `'events'` - in which case the `lib` directory and `modules` directories are searched for the module.
#### Return
require() will return the loaded module's exports.
### scload() function
#### No longer recommended for use by Plugin/Module developers (deprecated)
scload() should only be used to load .json data.
#### Parameters
* filename - The name of the file to load.
* warnOnFileNotFound (optional - default: false) - warn if the file was not found.
#### Returns
scload() will return the result of the last statement evaluated in the file.
#### Example
scload("myFile.js"); // loads a javascript file and evaluates it.
var myData = scload("myData.json"); // loads a javascript file and evaluates it - eval'd contents are returned.
##### myData.json contents...
{ players: {
walterh: {
h: ["jsp home {1}"],
sunny:["time set 0",
"weather clear"]
}
}
}
### scsave() function
The scsave() function saves an in-memory javascript object to a
specified file. Under the hood, scsave() uses JSON (specifically
json2.js) to save the object. Again, there will usually be no need to
call this function directly as all javascript plugins' state are saved
automatically if they are declared using the `plugin()` function. Any
in-memory object saved using the `scsave()` function can later be
restored using the `scload()` function.
#### Parameters
* objectToSave : The object you want to save.
* filename : The name of the file you want to save it to.
#### Example
```javascript
var myObject = { name: 'John Doe',
aliases: ['John Ray', 'John Mee'],
date_of_birth: '1982/01/31' };
scsave(myObject, 'johndoe.json');
```
##### johndoe.json contents...
{ "name": "John Doe",
"aliases": ["John Ray", "John Mee"],
"date_of_birth": "1982/01/31"
};
### plugin() function
The `plugin()` function should be used to declare a javascript module
whose state you want to have managed by ScriptCraft - that is - a
Module whose state will be loaded at start up and saved at shut down.
A plugin is just a regular javascript object whose state is managed by
ScriptCraft. The only member of the plugin which whose persistence is
managed by Scriptcraft is `store` - this special member will be
automatically saved at shutdown and loaded at startup by
ScriptCraft. This makes it easier to write plugins which need to
persist data.
#### Parameters
* pluginName (String) : The name of the plugin - this becomes a global variable.
* pluginDefinition (Object) : The various functions and members of the plugin object.
* isPersistent (boolean - optional) : Specifies whether or not the
plugin/object state should be loaded and saved by ScriptCraft.
#### Example
See chat/color.js for an example of a simple plugin - one which lets
players choose a default chat color. See also [Anatomy of a
ScriptCraft Plugin][anatomy].
[anatomy]: ./Anatomy-of-a-Plugin.md
### command() function
The `command()` function is used to expose javascript functions for use by non-operators (regular players). Only operators should be allowed use raw javascript using the `/js ` command because it is too powerful for use by regular players and can be easily abused. However, the `/jsp ` command lets you (the operator / server administrator / plugin author) safely expose javascript functions for use by players.
#### Parameters
* commandFunction: The named javascript function which will be invoked when the command is invoked by a player. The name of the function will be used as the command name so name this function accordingly. The callback function in turn takes 2 parameters...
* params : An Array of type String - the list of parameters passed to the command.
* sender : The [CommandSender][bukcs] object that invoked the command (this is usually a Player object but can be a Block ([BlockCommandSender][bukbcs]).
* options (Array|Function - optional) : An array of command options/parameters which the player can supply (It's useful to supply an array so that Tab-Completion works for the `/jsp ` commands. If a function is supplied instead of an array then the function will be invoked at TAB-completion time and should return an array of strings.
* intercepts (boolean - optional) : Indicates whether this command can intercept Tab-Completion of the `/jsp ` command - advanced usage - see alias/alias.js for example.
#### Example
// javascript code
function boo( params, sender) {
echo( sender, params[0] );
}
command( boo );
# in-game execution
/jsp boo Hi!
> Hi!
To use a callback for options (TAB-Completion) ...
function boo( params, sender ) {
var receiver = server.getPlayer( params[0] );
if ( receiver ){
echo( receiver, sender.name + ' says boo!');
}
}
command( boo, bukkit.playerNames );
See chat/colors.js or alias/alias.js or homes/homes.js for more examples of how to use the `command()` function.
### setTimeout() function
This function mimics the setTimeout() function used in browser-based javascript. However, the function will only accept a function reference, not a string of javascript code. Where setTimeout() in the browser returns a numeric value which can be subsequently passed to clearTimeout(), This implementation returns an object which can be subsequently passed to ScriptCraft's own clearTimeout() implementation.
If Node.js supports setTimeout() then it's probably good for ScriptCraft to support it too.
#### Example
```javascript
//
// start a storm in 5 seconds
//
setTimeout( function() {
var world = server.worlds.get(0);
world.setStorm(true);
}, 5000);
```
### clearTimeout() function
A scriptcraft implementation of clearTimeout().
### setInterval() function
This function mimics the setInterval() function used in browser-based javascript. However, the function will only accept a function reference, not a string of javascript code. Where setInterval() in the browser returns a numeric value which can be subsequently passed to clearInterval(), This implementation returns an object which can be subsequently passed to ScriptCraft's own clearInterval() implementation.
### clearInterval() function
A scriptcraft implementation of clearInterval().
### refresh() function
The refresh() function can be used to only reload the ScriptCraft plugin (it's like the `reload` command except it only reloads ScriptCraft). The refresh() function will ...
1. Disable the ScriptCraft plugin.
2. Unload all event listeners associated with the ScriptCraft plugin.
3. Enable the ScriptCraft plugin.
... refresh() can be used during development to reload only scriptcraft javascript files.
See [issue #69][issue69] for more information.
[issue69]: https://github.com/walterhiggins/ScriptCraft/issues/69
### addUnloadHandler() function
The addUnloadHandler() function takes a callback function as a parameter. The callback will be called when the ScriptCraft plugin is unloaded (usually as a result of a a `reload` command or server shutdown).
This function provides a way for ScriptCraft modules to do any required cleanup/housekeeping just prior to the ScriptCraft Plugin unloading.
### isOp() function
This function takes a single parameter and returns true if it's an operator or has operator-level privileges.
## require - Node.js-style module loading in ScriptCraft
Node.js is a server-side javascript environment with an excellent
module loading system based on CommonJS. Modules in Node.js are really
simple. Each module is in its own javascript file and all variables
and functions within the file are private to that file/module only.
There is a very concise explanation of CommonJS modules at...
[http://wiki.commonjs.org/wiki/Modules/1.1.1.][cjsmodules]
Node.js also has good documentation on [Modules][njsmod].
If you want to export a variable or function you use the module.export
property.
For example imagine you have 3 files program.js, inc.js and math.js ...
### math.js
```javascript
exports.add = function(a,b){
return a + b;
}
```
### inc.js
```javascript
var math = require('./math');
exports.increment = function(n){
return math.add(n, 1);
}
```
### program.js
```javascript
var inc = require('./inc').increment;
var a = 7;
a = inc(a);
print(a);
```
You can see from the above sample code that programs can use modules
and modules themeselves can use other modules. Modules have full
control over what functions and properties they want to provide to
others.
### Important
Although ScriptCraft now supports Node.js style modules, it does not
support node modules. Node.js and Rhino are two very different
Javascript environments. ScriptCraft uses Rhino Javascript, not
Node.js. Standard Node.js modules such as `'fs'` are not available in ScriptCraft.
Modules can be loaded using relative or absolute paths. Per the CommonJS
module specification, the '.js' suffix is optional.
[cjsmodules]: http://wiki.commonjs.org/wiki/Modules/1.1.1.
### module name resolution
When resolving module names to file paths, ScriptCraft uses the following rules...
1. if the module does not begin with './' or '/' then ...
1.1 Look in the 'scriptcraft/lib' directory. If it's not there then...
1.2 Look in the 'scriptcraft/modules' directory. If it's not there then
Throw an Error.
2. If the module begins with './' or '/' then ...
2.1 if the module begins with './' then it's treated as a file path. File paths are
always relative to the module from which the require() call is being made.
2.2 If the module begins with '/' then it's treated as an absolute path.
If the module does not have a '.js' suffix, and a file with the same name and a .js sufix exists,
then the file will be loaded.
3. If the module name resolves to a directory then...
3.1 look for a package.json file in the directory and load the `main` property e.g.
// package.json located in './some-library/'
{
"main": './some-lib.js',
"name": 'some-library'
}
3.2 if no package.json file exists then look for an index.js file in the directory
## events Module
The Events module provides a thin wrapper around Bukkit's
Event-handling API. Bukkit's Events API makes use of Java Annotations
which are not available in Javascript, so this module provides a
simple way to listen to minecraft events in javascript.
### events.on() static method
This method is used to register event listeners.
#### Parameters
* eventName - A Java class. See [Bukkit API][buk] for details of the many bukkit event types.
* callback - A function which will be called whenever the event
fires. The callback should take a single parameter, event (the event fired).
* priority (optional - default: "HIGHEST") - The priority the
listener/callback takes over other listeners to the same
event. Possible values are "HIGH", "HIGHEST", "LOW", "LOWEST",
"NORMAL", "MONITOR". For an explanation of what the different
priorities mean refer to bukkit's [Event API Reference][buk2].
#### Returns
An object which can be used to unregister the listener.
#### Example:
The following code will print a message on screen every time a block is broken in the game
```javascript
events.on( org.bukkit.block.BlockBreakEvent, function( evt ) {
echo(evt.player, evt.player.name + ' broke a block!');
} );
```
To handle an event only once and unregister from further events...
```javascript
events.on( org.bukkit.block.BlockBreakEvent, function( evt ) {
echo( evt.player, evt.player.name + ' broke a block!');
this.unregister();
} );
```
The `this` keyword when used inside the callback function refers to
the Listener object created by ScriptCraft. It has a single method
`unregister()` which can be used to stop listening. This is the same
object which is returned by the `events.on()` function.
To unregister a listener *outside* of the listener function...
```javascript
var myBlockBreakListener = events.on( org.bukkit.block.BlockBreakEvent, function( evt ) { ... } );
...
myBlockBreakListener.unregister();
```
[buk2]: http://wiki.bukkit.org/Event_API_Reference
[buk]: http://jd.bukkit.org/dev/apidocs/index.html?org/bukkit/event/Event.html
### bukkit
The bukkit global variable provides short names for commonly used Bukkit
Java classes and Enums. It also provides some helper functions for getting
players, player names and worlds.
#### bukkit.stat and bukkit.stats
This is a short name for the [org.bukkit.Statistic](http://jd.bukkit.org/rb/apidocs/org/bukkit/Statistic.html) Enum.
##### Usage
var jumpStat = bukkit.stat.JUMP; // var jumpStat = org.bukkit.Statistic.JUMP
#### bukkit.material
This is a short name for the [org.bukkit.Material](http://jd.bukkit.org/rb/apidocs/org/bukkit/Material.html) Enum.
##### Usage
var apple = bukkit.material.APPLE;
#### bukkit.art
This is a short name for the [org.bukkit.Art](http://jd.bukkit.org/rb/apidocs/org/bukkit/Art.html) Enum.
##### Usage
var sunsetArt = bukkit.art.SUNSET;
#### bukkit.mode
This is a short name for the [org.bukkit.GameMode](http://jd.bukkit.org/rb/apidocs/org/bukkit/GameMode.html) Enum.
##### Usage
var creative = bukkit.mode.CREATIVE;
#### bukkit.sound
This is a short name for the [org.bukkit.Sound](http://jd.bukkit.org/rb/apidocs/org/bukkit/Sound.html) Enum.
##### Usage
var oink = bukkit.sound.PIG_IDLE;
#### bukkit.players() function
This function returns a javascript array of all online players on the server.
#### bukkit.playerNames() function
This function returns a javascript array of player names (as javascript strings)
#### bukkit.worlds() function
This function returns a javascript array of all worlds on the server.
## console global variable
ScriptCraft provides a `console` global variable with the followng methods...
* log()
* info()
* warn()
* error()
The ScriptCraft console methods work like the [Web API implementation][webcons].
### Example
console.log('Hello %s', 'world');
Basic variable substitution is supported (ScriptCraft's implementation
of console uses the Bukkit Plugin [Logger][lgr] under the hood and
uses [java.lang.String.format()][strfmt] for variable
substitution. All output will be sent to the server console (not
in-game).
### Using string substitutions
ScriptCraft uses Java's [String.format()][strfmt] so any string substitution identifiers supported by
`java.lang.String.format()` are supported (e.g. %s , %d etc).
for (var i=0; i<5; i++) {
console.log("Hello, %s. You've called me %d times.", "Bob", i+1);
}
[lgr]: http://jd.bukkit.org/beta/apidocs/org/bukkit/plugin/PluginLogger.html
[strfmt]: http://docs.oracle.com/javase/6/docs/api/java/lang/String.html#format(java.lang.String, java.lang.Object...)
[webcons]: https://developer.mozilla.org/en-US/docs/Web/API/console
## Events Helper Module
The Events helper module provides a suite of functions - one for each possible event.
For example, the events.blockDestroy() function is just a wrapper function which calls events.on(net.canarymod.hook.player.BlockDestroyHook, callback, priority)
This module is a convenience wrapper for easily adding new event handling functions in Javascript.
At the in-game or server-console prompt, players/admins can type `events.` and use TAB completion
to choose from any of the approx. 160 different event types to listen to.
### Usage
events.blockDestroy( function( event ) {
echo( event.player, 'You broke a block!');
});
The crucial difference is that the events module now has functions for each of the built-in events. The functions are accessible via TAB-completion so will help beginning programmers to explore the events at the server console window.
### events.minecartActivate()
#### Parameters
* callback - A function which is called whenever the [entity.MinecartActivateHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/MinecartActivateHook.html) is fired
* priority - optional - see events.on() for more information.
### events.villagerTradeUnlock()
#### Parameters
* callback - A function which is called whenever the [entity.VillagerTradeUnlockHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/VillagerTradeUnlockHook.html) is fired
* priority - optional - see events.on() for more information.
### events.mobTarget()
#### Parameters
* callback - A function which is called whenever the [entity.MobTargetHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/MobTargetHook.html) is fired
* priority - optional - see events.on() for more information.
### events.chickenLayEgg()
#### Parameters
* callback - A function which is called whenever the [entity.ChickenLayEggHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/ChickenLayEggHook.html) is fired
* priority - optional - see events.on() for more information.
### events.potionEffectFinish()
#### Parameters
* callback - A function which is called whenever the [entity.PotionEffectFinishHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/PotionEffectFinishHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entityMove()
#### Parameters
* callback - A function which is called whenever the [entity.EntityMoveHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EntityMoveHook.html) is fired
* priority - optional - see events.on() for more information.
### events.hangingEntityDestroy()
#### Parameters
* callback - A function which is called whenever the [entity.HangingEntityDestroyHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/HangingEntityDestroyHook.html) is fired
* priority - optional - see events.on() for more information.
### events.vehicleCollision()
#### Parameters
* callback - A function which is called whenever the [entity.VehicleCollisionHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/VehicleCollisionHook.html) is fired
* priority - optional - see events.on() for more information.
### events.potionEffectApplied()
#### Parameters
* callback - A function which is called whenever the [entity.PotionEffectAppliedHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/PotionEffectAppliedHook.html) is fired
* priority - optional - see events.on() for more information.
### events.vehicleDestroy()
#### Parameters
* callback - A function which is called whenever the [entity.VehicleDestroyHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/VehicleDestroyHook.html) is fired
* priority - optional - see events.on() for more information.
### events.vehicleEnter()
#### Parameters
* callback - A function which is called whenever the [entity.VehicleEnterHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/VehicleEnterHook.html) is fired
* priority - optional - see events.on() for more information.
### events.damage()
#### Parameters
* callback - A function which is called whenever the [entity.DamageHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/DamageHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entityMount()
#### Parameters
* callback - A function which is called whenever the [entity.EntityMountHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EntityMountHook.html) is fired
* priority - optional - see events.on() for more information.
### events.slimeSplit()
#### Parameters
* callback - A function which is called whenever the [entity.SlimeSplitHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/SlimeSplitHook.html) is fired
* priority - optional - see events.on() for more information.
### events.endermanDropBlock()
#### Parameters
* callback - A function which is called whenever the [entity.EndermanDropBlockHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EndermanDropBlockHook.html) is fired
* priority - optional - see events.on() for more information.
### events.itemTouchGround()
#### Parameters
* callback - A function which is called whenever the [entity.ItemTouchGroundHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/ItemTouchGroundHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entitySpawn()
#### Parameters
* callback - A function which is called whenever the [entity.EntitySpawnHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EntitySpawnHook.html) is fired
* priority - optional - see events.on() for more information.
### events.endermanPickupBlock()
#### Parameters
* callback - A function which is called whenever the [entity.EndermanPickupBlockHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EndermanPickupBlockHook.html) is fired
* priority - optional - see events.on() for more information.
### events.vehicleDamage()
#### Parameters
* callback - A function which is called whenever the [entity.VehicleDamageHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/VehicleDamageHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entityLightningStruck()
#### Parameters
* callback - A function which is called whenever the [entity.EntityLightningStruckHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EntityLightningStruckHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entityDespawn()
#### Parameters
* callback - A function which is called whenever the [entity.EntityDespawnHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EntityDespawnHook.html) is fired
* priority - optional - see events.on() for more information.
### events.vehicleMove()
#### Parameters
* callback - A function which is called whenever the [entity.VehicleMoveHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/VehicleMoveHook.html) is fired
* priority - optional - see events.on() for more information.
### events.projectileHit()
#### Parameters
* callback - A function which is called whenever the [entity.ProjectileHitHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/ProjectileHitHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entityDeath()
#### Parameters
* callback - A function which is called whenever the [entity.EntityDeathHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EntityDeathHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entityTame()
#### Parameters
* callback - A function which is called whenever the [entity.EntityTameHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/EntityTameHook.html) is fired
* priority - optional - see events.on() for more information.
### events.vehicleExit()
#### Parameters
* callback - A function which is called whenever the [entity.VehicleExitHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/VehicleExitHook.html) is fired
* priority - optional - see events.on() for more information.
### events.dimensionSwitch()
#### Parameters
* callback - A function which is called whenever the [entity.DimensionSwitchHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/entity/DimensionSwitchHook.html) is fired
* priority - optional - see events.on() for more information.
### events.foodLevel()
#### Parameters
* callback - A function which is called whenever the [player.FoodLevelHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/FoodLevelHook.html) is fired
* priority - optional - see events.on() for more information.
### events.bookEdit()
#### Parameters
* callback - A function which is called whenever the [player.BookEditHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BookEditHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerListEntry()
#### Parameters
* callback - A function which is called whenever the [player.PlayerListEntryHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PlayerListEntryHook.html) is fired
* priority - optional - see events.on() for more information.
### events.eat()
#### Parameters
* callback - A function which is called whenever the [player.EatHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/EatHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerIdle()
#### Parameters
* callback - A function which is called whenever the [player.PlayerIdleHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PlayerIdleHook.html) is fired
* priority - optional - see events.on() for more information.
### events.enchant()
#### Parameters
* callback - A function which is called whenever the [player.EnchantHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/EnchantHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerArmSwing()
#### Parameters
* callback - A function which is called whenever the [player.PlayerArmSwingHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PlayerArmSwingHook.html) is fired
* priority - optional - see events.on() for more information.
### events.teleport()
#### Parameters
* callback - A function which is called whenever the [player.TeleportHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/TeleportHook.html) is fired
* priority - optional - see events.on() for more information.
### events.anvilUse()
#### Parameters
* callback - A function which is called whenever the [player.AnvilUseHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/AnvilUseHook.html) is fired
* priority - optional - see events.on() for more information.
### events.portalUse()
#### Parameters
* callback - A function which is called whenever the [player.PortalUseHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PortalUseHook.html) is fired
* priority - optional - see events.on() for more information.
### events.foodSaturation()
#### Parameters
* callback - A function which is called whenever the [player.FoodSaturationHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/FoodSaturationHook.html) is fired
* priority - optional - see events.on() for more information.
### events.connection()
#### Parameters
* callback - A function which is called whenever the [player.ConnectionHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ConnectionHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerRespawned()
#### Parameters
* callback - A function which is called whenever the [player.PlayerRespawnedHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PlayerRespawnedHook.html) is fired
* priority - optional - see events.on() for more information.
### events.armorBroken()
#### Parameters
* callback - A function which is called whenever the [player.ArmorBrokenHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ArmorBrokenHook.html) is fired
* priority - optional - see events.on() for more information.
### events.levelUp()
#### Parameters
* callback - A function which is called whenever the [player.LevelUpHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/LevelUpHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockRightClick()
#### Parameters
* callback - A function which is called whenever the [player.BlockRightClickHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BlockRightClickHook.html) is fired
* priority - optional - see events.on() for more information.
### events.itemDrop()
#### Parameters
* callback - A function which is called whenever the [player.ItemDropHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ItemDropHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerRespawning()
#### Parameters
* callback - A function which is called whenever the [player.PlayerRespawningHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PlayerRespawningHook.html) is fired
* priority - optional - see events.on() for more information.
### events.craft()
#### Parameters
* callback - A function which is called whenever the [player.CraftHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/CraftHook.html) is fired
* priority - optional - see events.on() for more information.
### events.experience()
#### Parameters
* callback - A function which is called whenever the [player.ExperienceHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ExperienceHook.html) is fired
* priority - optional - see events.on() for more information.
### events.signChange()
#### Parameters
* callback - A function which is called whenever the [player.SignChangeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/SignChangeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.healthChange()
#### Parameters
* callback - A function which is called whenever the [player.HealthChangeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/HealthChangeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.disconnection()
#### Parameters
* callback - A function which is called whenever the [player.DisconnectionHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/DisconnectionHook.html) is fired
* priority - optional - see events.on() for more information.
### events.gameModeChange()
#### Parameters
* callback - A function which is called whenever the [player.GameModeChangeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/GameModeChangeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.preConnection()
#### Parameters
* callback - A function which is called whenever the [player.PreConnectionHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PreConnectionHook.html) is fired
* priority - optional - see events.on() for more information.
### events.villagerTrade()
#### Parameters
* callback - A function which is called whenever the [player.VillagerTradeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/VillagerTradeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.returnFromIdle()
#### Parameters
* callback - A function which is called whenever the [player.ReturnFromIdleHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ReturnFromIdleHook.html) is fired
* priority - optional - see events.on() for more information.
### events.slotClick()
#### Parameters
* callback - A function which is called whenever the [player.SlotClickHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/SlotClickHook.html) is fired
* priority - optional - see events.on() for more information.
### events.entityRightClick()
#### Parameters
* callback - A function which is called whenever the [player.EntityRightClickHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/EntityRightClickHook.html) is fired
* priority - optional - see events.on() for more information.
### events.foodExhaustion()
#### Parameters
* callback - A function which is called whenever the [player.FoodExhaustionHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/FoodExhaustionHook.html) is fired
* priority - optional - see events.on() for more information.
### events.chat()
#### Parameters
* callback - A function which is called whenever the [player.ChatHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ChatHook.html) is fired
* priority - optional - see events.on() for more information.
### events.itemPickup()
#### Parameters
* callback - A function which is called whenever the [player.ItemPickupHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ItemPickupHook.html) is fired
* priority - optional - see events.on() for more information.
### events.bedExit()
#### Parameters
* callback - A function which is called whenever the [player.BedExitHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BedExitHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockPlace()
#### Parameters
* callback - A function which is called whenever the [player.BlockPlaceHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BlockPlaceHook.html) is fired
* priority - optional - see events.on() for more information.
### events.toolBroken()
#### Parameters
* callback - A function which is called whenever the [player.ToolBrokenHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ToolBrokenHook.html) is fired
* priority - optional - see events.on() for more information.
### events.kick()
#### Parameters
* callback - A function which is called whenever the [player.KickHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/KickHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerDeath()
#### Parameters
* callback - A function which is called whenever the [player.PlayerDeathHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PlayerDeathHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockLeftClick()
#### Parameters
* callback - A function which is called whenever the [player.BlockLeftClickHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BlockLeftClickHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockDestroy()
#### Parameters
* callback - A function which is called whenever the [player.BlockDestroyHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BlockDestroyHook.html) is fired
* priority - optional - see events.on() for more information.
### events.bedEnter()
#### Parameters
* callback - A function which is called whenever the [player.BedEnterHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BedEnterHook.html) is fired
* priority - optional - see events.on() for more information.
### events.signShow()
#### Parameters
* callback - A function which is called whenever the [player.SignShowHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/SignShowHook.html) is fired
* priority - optional - see events.on() for more information.
### events.inventory()
#### Parameters
* callback - A function which is called whenever the [player.InventoryHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/InventoryHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerMove()
#### Parameters
* callback - A function which is called whenever the [player.PlayerMoveHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/PlayerMoveHook.html) is fired
* priority - optional - see events.on() for more information.
### events.itemUse()
#### Parameters
* callback - A function which is called whenever the [player.ItemUseHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/ItemUseHook.html) is fired
* priority - optional - see events.on() for more information.
### events.ban()
#### Parameters
* callback - A function which is called whenever the [player.BanHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/BanHook.html) is fired
* priority - optional - see events.on() for more information.
### events.statGained()
#### Parameters
* callback - A function which is called whenever the [player.StatGainedHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/player/StatGainedHook.html) is fired
* priority - optional - see events.on() for more information.
### events.smeltBegin()
#### Parameters
* callback - A function which is called whenever the [world.SmeltBeginHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/SmeltBeginHook.html) is fired
* priority - optional - see events.on() for more information.
### events.treeGrow()
#### Parameters
* callback - A function which is called whenever the [world.TreeGrowHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/TreeGrowHook.html) is fired
* priority - optional - see events.on() for more information.
### events.chunkCreated()
#### Parameters
* callback - A function which is called whenever the [world.ChunkCreatedHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/ChunkCreatedHook.html) is fired
* priority - optional - see events.on() for more information.
### events.liquidDestroy()
#### Parameters
* callback - A function which is called whenever the [world.LiquidDestroyHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/LiquidDestroyHook.html) is fired
* priority - optional - see events.on() for more information.
### events.chunkLoaded()
#### Parameters
* callback - A function which is called whenever the [world.ChunkLoadedHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/ChunkLoadedHook.html) is fired
* priority - optional - see events.on() for more information.
### events.pistonRetract()
#### Parameters
* callback - A function which is called whenever the [world.PistonRetractHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/PistonRetractHook.html) is fired
* priority - optional - see events.on() for more information.
### events.smelt()
#### Parameters
* callback - A function which is called whenever the [world.SmeltHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/SmeltHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockUpdate()
#### Parameters
* callback - A function which is called whenever the [world.BlockUpdateHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/BlockUpdateHook.html) is fired
* priority - optional - see events.on() for more information.
### events.portalDestroy()
#### Parameters
* callback - A function which is called whenever the [world.PortalDestroyHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/PortalDestroyHook.html) is fired
* priority - optional - see events.on() for more information.
### events.ignition()
#### Parameters
* callback - A function which is called whenever the [world.IgnitionHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/IgnitionHook.html) is fired
* priority - optional - see events.on() for more information.
### events.redstoneChange()
#### Parameters
* callback - A function which is called whenever the [world.RedstoneChangeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/RedstoneChangeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.weatherChange()
#### Parameters
* callback - A function which is called whenever the [world.WeatherChangeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/WeatherChangeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.chunkCreation()
#### Parameters
* callback - A function which is called whenever the [world.ChunkCreationHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/ChunkCreationHook.html) is fired
* priority - optional - see events.on() for more information.
### events.hopperTransfer()
#### Parameters
* callback - A function which is called whenever the [world.HopperTransferHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/HopperTransferHook.html) is fired
* priority - optional - see events.on() for more information.
### events.chunkUnload()
#### Parameters
* callback - A function which is called whenever the [world.ChunkUnloadHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/ChunkUnloadHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockGrow()
#### Parameters
* callback - A function which is called whenever the [world.BlockGrowHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/BlockGrowHook.html) is fired
* priority - optional - see events.on() for more information.
### events.dispense()
#### Parameters
* callback - A function which is called whenever the [world.DispenseHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/DispenseHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockDropXp()
#### Parameters
* callback - A function which is called whenever the [world.BlockDropXpHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/BlockDropXpHook.html) is fired
* priority - optional - see events.on() for more information.
### events.fireworkExplode()
#### Parameters
* callback - A function which is called whenever the [world.FireworkExplodeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/FireworkExplodeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.leafDecay()
#### Parameters
* callback - A function which is called whenever the [world.LeafDecayHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/LeafDecayHook.html) is fired
* priority - optional - see events.on() for more information.
### events.pistonExtend()
#### Parameters
* callback - A function which is called whenever the [world.PistonExtendHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/PistonExtendHook.html) is fired
* priority - optional - see events.on() for more information.
### events.noteBlockPlay()
#### Parameters
* callback - A function which is called whenever the [world.NoteBlockPlayHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/NoteBlockPlayHook.html) is fired
* priority - optional - see events.on() for more information.
### events.lightningStrike()
#### Parameters
* callback - A function which is called whenever the [world.LightningStrikeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/LightningStrikeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.decorate()
#### Parameters
* callback - A function which is called whenever the [world.DecorateHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/DecorateHook.html) is fired
* priority - optional - see events.on() for more information.
### events.explosion()
#### Parameters
* callback - A function which is called whenever the [world.ExplosionHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/ExplosionHook.html) is fired
* priority - optional - see events.on() for more information.
### events.tNTActivate()
#### Parameters
* callback - A function which is called whenever the [world.TNTActivateHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/TNTActivateHook.html) is fired
* priority - optional - see events.on() for more information.
### events.timeChange()
#### Parameters
* callback - A function which is called whenever the [world.TimeChangeHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/TimeChangeHook.html) is fired
* priority - optional - see events.on() for more information.
### events.flow()
#### Parameters
* callback - A function which is called whenever the [world.FlowHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/FlowHook.html) is fired
* priority - optional - see events.on() for more information.
### events.portalCreate()
#### Parameters
* callback - A function which is called whenever the [world.PortalCreateHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/PortalCreateHook.html) is fired
* priority - optional - see events.on() for more information.
### events.blockPhysics()
#### Parameters
* callback - A function which is called whenever the [world.BlockPhysicsHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/world/BlockPhysicsHook.html) is fired
* priority - optional - see events.on() for more information.
### events.playerCommand()
#### Parameters
* callback - A function which is called whenever the [command.PlayerCommandHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/command/PlayerCommandHook.html) is fired
* priority - optional - see events.on() for more information.
### events.consoleCommand()
#### Parameters
* callback - A function which is called whenever the [command.ConsoleCommandHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/command/ConsoleCommandHook.html) is fired
* priority - optional - see events.on() for more information.
### events.commandBlockCommand()
#### Parameters
* callback - A function which is called whenever the [command.CommandBlockCommandHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/command/CommandBlockCommandHook.html) is fired
* priority - optional - see events.on() for more information.
### events.loadWorld()
#### Parameters
* callback - A function which is called whenever the [system.LoadWorldHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/LoadWorldHook.html) is fired
* priority - optional - see events.on() for more information.
### events.permissionCheck()
#### Parameters
* callback - A function which is called whenever the [system.PermissionCheckHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/PermissionCheckHook.html) is fired
* priority - optional - see events.on() for more information.
### events.serverGuiStart()
#### Parameters
* callback - A function which is called whenever the [system.ServerGuiStartHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/ServerGuiStartHook.html) is fired
* priority - optional - see events.on() for more information.
### events.unloadWorld()
#### Parameters
* callback - A function which is called whenever the [system.UnloadWorldHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/UnloadWorldHook.html) is fired
* priority - optional - see events.on() for more information.
### events.pluginDisable()
#### Parameters
* callback - A function which is called whenever the [system.PluginDisableHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/PluginDisableHook.html) is fired
* priority - optional - see events.on() for more information.
### events.pluginEnable()
#### Parameters
* callback - A function which is called whenever the [system.PluginEnableHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/PluginEnableHook.html) is fired
* priority - optional - see events.on() for more information.
### events.serverTick()
#### Parameters
* callback - A function which is called whenever the [system.ServerTickHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/ServerTickHook.html) is fired
* priority - optional - see events.on() for more information.
### events.serverListPing()
#### Parameters
* callback - A function which is called whenever the [system.ServerListPingHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/ServerListPingHook.html) is fired
* priority - optional - see events.on() for more information.
### events.serverShutdown()
#### Parameters
* callback - A function which is called whenever the [system.ServerShutdownHook event](http://jd.bukkit.org/rb/apidocs/org/bukkit/event/system/ServerShutdownHook.html) is fired
* priority - optional - see events.on() for more information.
## Blocks Module
You hate having to lookup [Data Values][dv] when you use ScriptCraft's
Drone() functions. So do I. So I created this blocks object which is
a helper object for use in construction.
### Examples
box( blocks.oak ); // creates a single oak wood block
box( blocks.sand, 3, 2, 1 ); // creates a block of sand 3 wide x 2 high x 1 long
box( blocks.wool.green, 2 ); // creates a block of green wool 2 blocks wide
Color aliased properties that were a direct descendant of the blocks
object are no longer used to avoid confusion with carpet and stained
clay blocks. In addition, there's a convenience array `blocks.rainbow`
which is an array of the 7 colors of the rainbow (or closest
approximations).
The blocks module is globally exported by the Drone module.
## Fireworks Module
The fireworks module makes it easy to create fireworks using
ScriptCraft. The module has a single function `firework` which takes
a `org.bukkit.Location` as its 1 and only parameter.
### Examples
The module also extends the `Drone` object adding a `firework` method
so that fireworks can be created as a part of a Drone chain. For
Example....
/js firework()
... creates a single firework, while ....
/js firework().fwd(3).times(5)
... creates 5 fireworks in a row. Fireworks have also been added as a
possible option for the `arrow` module. To have a firework launch
where an arrow strikes...
/js arrows.firework()
To call the fireworks.firework() function directly, you must provide a
location. For example...
/js var fireworks = require('fireworks');
/js fireworks.firework( self.location );
![firework example](img/firework.png)
## Asynchronous Input Module
The `input` module provides a simple way to prompt players for input at the
in-game prompt. In Javascript browser environments the `prompt()` function provides
a way to block execution and ask the user for input. Execution is blocked until the user
provides input using the modal dialog and clicks OK. Unfortunately Minecraft provides no
equivalent modal dialog which can be used to gather player text input. The only way to gather text
input from the player in Minecraft is to do so asynchronously. That is - a prompt message can be
sent to the player but the player is not obliged to provide input immediately, nor does the program
execution block until the player does so.
So ScriptCraft has no `prompt()` implementation because `prompt()` is a synchronous function and
Minecraft's API provides no equivalent functions or classes which can be used to implement this synchronously.
The Minecraft API does however have a 'Conversation' API which allows for prompting of the player and asynchronously gathering text input from the player.
This new `input()` function is best illustrated by example. The following code is for a number-guessing game:
```javascript
var input = require('input');
exports.numberguess = function(player){
var randomNumber = Math.ceil(Math.random() * 10);
input( player, 'Think of a number between 1 and 10 (q to quit)', function( guess, guesser, repeat ) {
if ( guess == 'q'){
return;
}
if ( +guess !== randomNumber ) {
if (+guess < randomNumber ) {
echo( guesser, 'Too low - guess again');
}
if (+guess > randomNumber ) {
echo( guesser, 'Too high - guess again');
}
repeat();
} else {
echo( guesser, 'You guessed correctly');
}
});
};
```
The `input()` function takes 3 parameters, the player, a prompt message and a callback which will be invoked when the player has entered some text at the in-game command prompt.
The callback is bound to an object which has the following properties:
* sender : The player who input the text
* value : The value of the text which has been input.
* message: The message prompt.
* repeat: A function which when invoked will repeat the original prompt. (this is for flow control)
The callback function as well as being bound to an object with the above properties (so you can use this.value inside your callback to get the value which has just been input), can also take the following parameters (in exact order):
* value
* sender
* repeat
The `value` parameter will be the same as `this.value`, the `repeat` parameter will be the same as `this.repeat` and so on.
## The recipes module
The Recipes module provides convenience functions for adding and removing recipes
from the game.
### Example
To add an EnderBow to the game (assumes there's an enchanted Item variable called enderBow)...
var recipes = require('recipes');
var items = require('items');
...
var enderBowRecipe = recipes.add( {
result: enderBow,
ingredients: {
E: items.enderPearl(1),
S: items.stick(1),
W: items.string(1)
},
shape: [ 'ESW',
'SEW',
'ESW' ]
} );
// to remove...
recipes.remove( enderBowRecipe );
## Http Module
For handling http requests. Not to be confused with the more robust
and functional 'http' module bundled with Node.js.
### http.request() function
The http.request() function will fetch a web address asynchronously (on a
separate thread)and pass the URL's response to a callback function
which will be executed synchronously (on the main thread). In this
way, http.request() can be used to fetch web content without blocking the
main thread of execution.
#### Parameters
* request: The request details either a plain URL e.g. "http://scriptcraft.js/sample.json" or an object with the following properties...
- url: The URL of the request.
- method: Should be one of the standard HTTP methods, GET, POST, PUT, DELETE (defaults to GET).
- params: A Javascript object with name-value pairs. This is for supplying parameters to the server.
* callback: The function to be called when the Web request has completed. This function takes the following parameters...
- responseCode: The numeric response code from the server. If the server did not respond with 200 OK then the response parameter will be undefined.
- response: A string (if the response is of type text) or object containing the HTTP response body.
#### Example
The following example illustrates how to use http.request to make a request to a JSON web service and evaluate its response...
var jsResponse;
var http = require('./http/request');
http.request("http://scriptcraftjs.org/sample.json",function(responseCode, responseBody){
jsResponse = eval("(" + responseBody + ")");
});
... The following example illustrates a more complex use-case POSTing parameters to a CGI process on a server...
var http = require('./http/request');
http.request(
{
url: 'http://pixenate.com/pixenate/pxn8.pl',
method: 'POST',
params: {script: '[]'}
},
function( responseCode, responseBody ) {
var jsObj = eval('(' + responseBody + ')');
});
## sc-mqtt module
This module provides a simple way to communicate with devices (such as Arduino)
using the popular lightweight [MQTT protocol][mqtt].
### Usage
This module can only be used if the separate `sc-mqtt.jar` file is
present in the CraftBukkit classpath. To use this module, you should
...
1. Download sc-mqtt.jar from
Hello World
## Utilities Module The `utils` module is a storehouse for various useful utility functions which can be used by plugin and module authors. It contains miscellaneous utility functions and classes to help with programming. ### utils.player() function The utils.player() function will return a [bukkit Player][bkpl] object with the given name. This function takes a single parameter `playerName` which can be either a String or a [Player][bkpl] object - if it's a Player object, then the same object is returned. If it's a String, then it tries to find the player with that name. #### Parameters * playerName : A String or Player object. If no parameter is provided then player() will try to return the `self` variable . It is strongly recommended to provide a parameter. #### Example ```javascript var utils = require('utils'); var name = 'walterh'; var player = utils.player(name); if ( player ) { echo(player, 'Got ' + name); } else { console.log('No player named ' + name); } ``` [bkpl]: http://jd.bukkit.org/dev/apidocs/org/bukkit/entity/Player.html [bkloc]: http://jd.bukkit.org/dev/apidocs/org/bukkit/Location.html ### utils.locationToJSON() function utils.locationToJSON() returns a [org.bukkit.Location][bkloc] object in JSON form... { world: 'world5', x: 56.9324, y: 103.9954, z: 43.1323, yaw: 0.0, pitch: 0.0 } This can be useful if you write a plugin that needs to store location data since bukkit's Location object is a Java object which cannot be serialized to JSON by default. #### Parameters * location: An object of type [org.bukkit.Location][bkloc] #### Returns A JSON object in the above form. ### utils.locationToString() function The utils.locationToString() function returns a [org.bukkit.Location][bkloc] object in string form... '{"world":"world5",x:56.9324,y:103.9954,z:43.1323,yaw:0.0,pitch:0.0}' ... which can be useful if you write a plugin which uses Locations as keys in a lookup table. #### Example ```javascript var utils = require('utils'); ... var key = utils.locationToString(player.location); lookupTable[key] = player.name; ``` ### utils.locationFromJSON() function This function reconstructs an [org.bukkit.Location][bkloc] object from a JSON representation. This is the counterpart to the `locationToJSON()` function. It takes a JSON object of the form returned by locationToJSON() and reconstructs and returns a bukkit Location object. ### utils.getPlayerPos() function This function returns the player's [Location][bkloc] (x, y, z, pitch and yaw) for a named player. If the "player" is in fact a [org.bukkit.command.BlockCommandSender][bkbcs] then the attached Block's location is returned. #### Parameters * player : A [org.bukkit.command.CommandSender][bkbcs] (Player or BlockCommandSender) or player name (String). #### Returns An [org.bukkit.Location][bkloc] object. [bkbcs]: http://jd.bukkit.org/dev/apidocs/org/bukkit/command/BlockCommandSender.html [bksndr]: http://jd.bukkit.org/dev/apidocs/index.html?org/bukkit/command/CommandSender.html ### utils.getMousePos() function This function returns a [org.bukkit.Location][bkloc] object (the x,y,z) of the current block being targeted by the named player. This is the location of the block the player is looking at (targeting). #### Parameters * player : The player whose targeted location you wish to get. #### Example The following code will strike lightning at the location the player is looking at... ```javascript var utils = require('utils'); var playerName = 'walterh'; var targetPos = utils.getMousePos(playerName); if (targetPos){ targetPos.world.strikeLightning(targetPos); } ``` ### utils.foreach() function The utils.foreach() function is a utility function for iterating over an array of objects (or a java.util.Collection of objects) and processing each object in turn. Where utils.foreach() differs from other similar functions found in javascript libraries, is that utils.foreach can process the array immediately or can process it *nicely* by processing one item at a time then delaying processing of the next item for a given number of server ticks (there are 20 ticks per second on the minecraft main thread). This method relies on Bukkit's [org.bukkit.scheduler][sched] package for scheduling processing of arrays. [sched]: http://jd.bukkit.org/beta/apidocs/org/bukkit/scheduler/package-summary.html #### Parameters * array : The array to be processed - It can be a javascript array, a java array or java.util.Collection * callback : The function to be called to process each item in the array. The callback function should have the following signature `callback(item, index, object, array)`. That is the callback will be called with the following parameters.... - item : The item in the array - index : The index at which the item can be found in the array. - object : Additional (optional) information passed into the foreach method. - array : The entire array. * context (optional) : An object which may be used by the callback. * delay (optional, numeric) : If a delay is specified (in ticks - 20 ticks = 1 second), then the processing will be scheduled so that each item will be processed in turn with a delay between the completion of each item and the start of the next. This is recommended for big builds (say 200 x 200 x 200 blocks) or any CPU-intensive process. * onDone (optional, function) : A function to be executed when all processing is complete. This parameter is only used when the processing is delayed. (It's optional even if a delay parameter is supplied). If called with a delay parameter then foreach() will return immediately after processing just the first item in the array (all subsequent items are processed later). If your code relies on the completion of the array processing, then provide an `onDone` parameter and put the code there. #### Example The following example illustrates how to use foreach for immediate processing of an array... ```javascript var utils = require('utils'); var players = ['moe', 'larry', 'curly']; utils.foreach (players, function(item){ echo( server.getPlayer(item), 'Hi ' + item); }); ``` ... The `utils.foreach()` function can work with Arrays or any Java-style collection. This is important because many objects in the Bukkit API use Java-style collections... ```javascript utils.foreach( server.onlinePlayers, function(player){ player.chat('Hello!'); }); ``` ... the above code sends a 'Hello!' to every online player. The following example is a more complex use case - The need to build an enormous structure without hogging CPU usage... ```javascript // build a structure 200 wide x 200 tall x 200 long // (That's 8 Million Blocks - enough to tax any machine!) var utils = require('utils'); var a = []; a.length = 200; var drone = new Drone(); var processItem = function(item, index, object, array){ // build a box 200 wide by 200 long then move up drone.box(blocks.wood, 200, 1, 200).up(); }; // by the time the job's done 'self' might be someone else // assume this code is within a function/closure var player = self; var onDone = function(){ echo( player, 'Job Done!'); }; utils.foreach (a, processItem, null, 10, onDone); ``` ### utils.nicely() function The utils.nicely() function is for performing processing using the [org.bukkit.scheduler][sched] package/API. utils.nicely() lets you process with a specified delay between the completion of each `next()` function and the start of the next `next()` function. `utils.nicely()` is a recursive function - that is - it calls itself (schedules itself actually) repeatedly until `hasNext` returns false. #### Parameters * next : A function which will be called if processing is to be done. * hasNext : A function which is called to determine if the `next` callback should be invoked. This should return a boolean value - true if the `next` function should be called (processing is not complete), false otherwise. * onDone : A function which is to be called when all processing is complete (hasNext returned false). * delay : The delay (in server ticks - 20 per second) between each call. #### Example See the source code to utils.foreach for an example of how utils.nicely is used. ### utils.at() function The utils.at() function will perform a given task at a given time every (minecraft) day. #### Parameters * time24hr : The time in 24hr form - e.g. 9:30 in the morning is '09:30' while 9:30 pm is '21:30', midnight is '00:00' and midday is '12:00' * callback : A javascript function which will be invoked at the given time. * worlds : (optional) An array of worlds. Each world has its own clock. If no array of worlds is specified, all the server's worlds are used. #### Example To warn players when night is approaching... ```javascript var utils = require('utils'); utils.at( '19:00', function() { utils.foreach( server.onlinePlayers, function( player ) { player.chat( 'The night is dark and full of terrors!' ); }); }); ``` ### utils.find() function The utils.find() function will return a list of all files starting at a given directory and recursiving trawling all sub-directories. #### Parameters * dir : The starting path. Must be a string. * filter : (optional) A [FilenameFilter][fnfltr] object to return only files matching a given pattern. [fnfltr]: http://docs.oracle.com/javase/6/docs/api/java/io/FilenameFilter.html #### Example ```javascript var utils = require('utils'); var jsFiles = utils.find('./', function(dir,name){ return name.match(/\.js$/); }); ``` ### utils.serverAddress() function The utils.serverAddress() function returns the IP(v4) address of the server. ```javascript var utils = require('utils'); var serverAddress = utils.serverAddress(); console.log(serverAddress); ``` ### utils.watchFile() function Watches for changes to the given file or directory and calls the function provided when the file changes. #### Parameters * File - the file to watch (can be a file or directory) * Callback - The callback to invoke when the file has changed. The callback takes the changed file as a parameter. #### Example ```javascript var utils = require('utils'); utils.watchFile( 'test.txt', function( file ) { console.log( file + ' has changed'); }); ``` ### utils.watchDir() function Watches for changes to the given directory and calls the function provided when the directory changes. It works by calling watchFile/watchDir for each file/subdirectory. #### Parameters * Dir - the file to watch (can be a file or directory) * Callback - The callback to invoke when the directory has changed. The callback takes the changed file as a parameter. For each change inside the directory the callback will also be called. #### Example ```javascript var utils = require('utils'); utils.watchDir( 'players/_ial', function( dir ) { console.log( dir + ' has changed'); }); ``` ### utils.unwatchFile() function Removes a file from the watch list. #### Example ```javascript var utils = require('utils'); utils.unwatchFile( 'test.txt'); ``` ### utils.unwatchDir() function Removes a directory from the watch list and all files inside the directory are also "unwatched" #### Example ```javascript var utils = require('utils'); utils.unwatchDir ('players/_ial'); ``` Would cause also ```javascript utils.unwatchFile (file); ``` for each file inside directory (and unwatchDir for each directory inside it) ### utils.array() function Converts Java collection objects to type Javascript array so they can avail of all of Javascript's Array goodness. #### Example var utils = require('utils'); var worlds = utils.array(server.worlds); ### utils.players() function This function returns a javascript array of all online players on the server. ### utils.playerNames() function This function returns a javascript array of player names (as javascript strings) ### utils.stat() function This function returns a numeric value for a given player statistic. #### Parameters * Player - The player object (optional - if only the statistic name parameter is provided then the statistic object is returned) * Statistic - A string whose value should be one of the following (CanaryMod) * ANIMALSBRED * BOATONECM * CLIMBONECM * CROUCHONECM * DAMAGEDEALT * DAMAGETAKEN * DEATHS * DRIVEONECM * DROP * FALLONECM * FISHCAUGHT * FLYONECM * HORSEONECM * JUMP * JUNKFISHED * LEAVEGAME * MINECARTONECM * MOBKILLS * PIGONECM * PLAYERKILLS * PLAYONEMINUTE * SPRINTONECM * SWIMONECM * TALKEDTOVILLAGER * TIMESINCEDEATH * TRADEDWITHVILLAGER * TREASUREFISHED * WALKONECM See [CanaryMod's Statistic][cmstat] class for an up-to-date list of possible stat values [cmstat]: https://ci.visualillusionsent.net/job/CanaryLib/javadoc/net/canarymod/api/statistics/Statistics.html #### Example 1 Getting stats for a player var utils = require('utils'); var jumpCount = utils.stat( player, 'jump'); #### Example 2 Getting the JUMP statistic object (which can be used elsewhere) var utils = require('utils'); var JUMPSTAT = utils.stat('jump'); var jumpCount = player.getStat( JUMPSTAT ); // canary-specific code This function also contains values for each possible stat so you can get at stats like this... var utils = require('utils'); var JUMPSTAT = utils.stat.JUMP; // Accessing the value var jumpCount = player.getStat ( JUMPSTAT ); // canary-specific code ## Drone Plugin The Drone is a convenience class for building. It can be used for... 1. Building 2. Copying and Pasting It uses a fluent interface which means all of the Drone's methods return `this` and can be chained together like so... var theDrone = new Drone(); theDrone.up().left().box(blocks.oak).down().fwd(3).cylinder0(blocks.lava,8); ### Constructing a Drone Object Drones can be created in any of the following ways... 1. Calling any one of the methods listed below will return a Drone object. For example... var d = box( blocks.oak ) ... creates a 1x1x1 wooden block at the cross-hairs or player's location and returns a Drone object. This might look odd (if you're familiar with Java's Object-dot-method syntax) but all of the Drone class's methods are also global functions that return new Drone objects. This is short-hand for creating drones and is useful for playing around with Drones at the in-game command prompt. It's shorter than typing ... var d = new Drone().box( blocks.oak ) ... All of the Drone's methods return `this` so you can chain operations together like this... var d = box( blocks.oak ) .up() .box( blocks.oak ,3,1,3) .down() .fwd(2) .box( blocks.oak ) .turn() .fwd(2) .box( blocks.oak ) .turn() .fwd(2) .box( blocks.oak ); 2. Using the following form... d = new Drone() ...will create a new Drone. If the cross-hairs are pointing at a block at the time then, that block's location becomes the drone's starting point. If the cross-hairs are _not_ pointing at a block, then the drone's starting location will be 2 blocks directly in front of the player. TIP: Building always happens right and front of the drone's position... Plan View: ^ | | D----> For convenience you can use a _corner stone_ to begin building. The corner stone should be located just above ground level. If the cross-hair is point at or into ground level when you create a new Drone(), then building begins at that point. You can get around this by pointing at a 'corner stone' just above ground level or alternatively use the following statement... d = new Drone().up(); ... which will move the drone up one block as soon as it's created. ![corner stone](img/cornerstone1.png) 3. Or by using the following form... d = new Drone(x,y,z,direction,world); This will create a new Drone at the location you specified using x, y, z In minecraft, the X axis runs west to east and the Z axis runs north to south. The direction parameter says what direction you want the drone to face: 0 = east, 1 = south, 2 = west, 3 = north. If the direction parameter is omitted, the player's direction is used instead. Both the `direction` and `world` parameters are optional. 4. Create a new Drone based on a Bukkit Location object... d = new Drone(location); This is useful when you want to create a drone at a given `org.bukkit.Location` . The `Location` class is used throughout the bukkit API. For example, if you want to create a drone when a block is broken at the block's location you would do so like this... events.blockBreak( function( event ) { var location = event.block.location; var drone = new Drone(location); // do more stuff with the drone here... }); #### Parameters * location (optional) : *NB* If an `org.bukkit.Location` object is provided as a parameter, then it should be the only parameter. * x (optional) : The x coordinate of the Drone * y (optional) : The y coordinate of the Drone * z (optional) : The z coordinate of the Drone * direction (optional) : The direction in which the Drone is facing. Possible values are 0 (east), 1 (south), 2 (west) or 3 (north) * world (optional) : The world in which the drone is created. ### Drone.box() method the box() method is a convenience method for building things. (For the more performance-oriented method - see cuboid) #### parameters * b - the block id - e.g. 6 for an oak sapling or '6:2' for a birch sapling. Alternatively you can use any one of the `blocks` values e.g. `blocks.sapling.birch` * w (optional - default 1) - the width of the structure * h (optional - default 1) - the height of the structure * d (optional - default 1) - the depth of the structure - NB this is not how deep underground the structure lies - this is how far away (depth of field) from the drone the structure will extend. #### Example To create a black structure 4 blocks wide, 9 blocks tall and 1 block long... box(blocks.wool.black, 4, 9, 1); ... or the following code does the same but creates a variable that can be used for further methods... var drone = new Drone(); drone.box(blocks.wool.black, 4, 9, 1); ![box example 1](img/boxex1.png) ### Drone.box0() method Another convenience method - this one creates 4 walls with no floor or ceiling. #### Parameters * block - the block id - e.g. 6 for an oak sapling or '6:2' for a birch sapling. Alternatively you can use any one of the `blocks` values e.g. `blocks.sapling.birch` * width (optional - default 1) - the width of the structure * height (optional - default 1) - the height of the structure * length (optional - default 1) - the length of the structure - how far away (depth of field) from the drone the structure will extend. #### Example To create a stone building with the insided hollowed out 7 wide by 3 tall by 6 long... box0( blocks.stone, 7, 3, 6); ![example box0](img/box0ex1.png) ### Drone.boxa() method Construct a cuboid using an array of blocks. As the drone moves first along the width axis, then the height (y axis) then the length, each block is picked from the array and placed. #### Parameters * blocks - An array of blocks - each block in the array will be placed in turn. * width * height * length #### Example Construct a rainbow-colored road 100 blocks long... var rainbowColors = [blocks.wool.red, blocks.wool.orange, blocks.wool.yellow, blocks.wool.lime, blocks.wool.lightblue, blocks.wool.blue, blocks.wool.purple]; boxa(rainbowColors,7,1,30); ![boxa example](img/boxaex1.png) ### Drone Movement Drones can move freely in minecraft's 3-D world. You control the Drone's movement using any of the following methods.. * up() * down() * left() * right() * fwd() * back() * turn() ... Each of these methods takes a single optional parameter `numBlocks` - the number of blocks to move in the given direction. If no parameter is given, the default is 1. To change direction use the `turn()` method which also takes a single optional parameter (numTurns) - the number of 90 degree turns to make. Turns are always clock-wise. If the drone is facing north, then drone.turn() will make the turn face east. If the drone is facing east then drone.turn(2) will make the drone turn twice so that it is facing west. ### Drone Positional Info * getLocation() - Returns a Bukkit Location object for the drone ### Drone Markers Markers are useful when your Drone has to do a lot of work. You can set a check-point and return to the check-point using the move() method. If your drone is about to undertake a lot of work - e.g. building a road, skyscraper or forest you should set a check-point before doing so if you want your drone to return to its current location. A 'start' checkpoint is automatically created when the Drone is first created. Markers are created and returned to using the followng two methods... * chkpt - Saves the drone's current location so it can be returned to later. * move - moves the drone to a saved location. Alternatively you can provide an org.bukkit.Location object or x,y,z and direction parameters. #### Parameters * name - the name of the checkpoint to save or return to. #### Example drone.chkpt('town-square'); // // the drone can now go off on a long excursion // for ( i = 0; i< 100; i++) { drone.fwd(12).box(6); } // // return to the point before the excursion // drone.move('town-square'); ### Drone.prism() method Creates a prism. This is useful for roofs on houses. #### Parameters * block - the block id - e.g. 6 for an oak sapling or '6:2' for a birch sapling. Alternatively you can use any one of the `blocks` values e.g. `blocks.sapling.birch` * width - the width of the prism * length - the length of the prism (will be 2 time its height) #### Example prism(blocks.oak,3,12); ![prism example](img/prismex1.png) ### Drone.prism0() method A variation on `prism` which hollows out the inside of the prism. It uses the same parameters as `prism`. ### Drone.cylinder() method A convenience method for building cylinders. Building begins radius blocks to the right and forward. #### Parameters * block - the block id - e.g. 6 for an oak sapling or '6:2' for a birch sapling. Alternatively you can use any one of the `blocks` values e.g. `blocks.sapling.birch` * radius * height #### Example To create a cylinder of Iron 7 blocks in radius and 1 block high... cylinder(blocks.iron, 7 , 1); ![cylinder example](img/cylinderex1.png) ### Drone.cylinder0() method A version of cylinder that hollows out the middle. #### Example To create a hollow cylinder of Iron 7 blocks in radius and 1 block high... cylinder0(blocks.iron, 7, 1); ![cylinder0 example](img/cylinder0ex1.png) ### Drone.arc() method The arc() method can be used to create 1 or more 90 degree arcs in the horizontal or vertical planes. This method is called by cylinder() and cylinder0() and the sphere() and sphere0() methods. #### Parameters arc() takes a single parameter - an object with the following named properties... * radius - The radius of the arc. * blockType - The type of block to use - this is the block Id only (no meta). See [Data Values][dv]. * meta - The metadata value. See [Data Values][dv]. * orientation (default: 'horizontal' ) - the orientation of the arc - can be 'vertical' or 'horizontal'. * stack (default: 1 ) - the height or length of the arc (depending on the orientation - if orientation is horizontal then this parameter refers to the height, if vertical then it refers to the length ). * strokeWidth (default: 1 ) - the width of the stroke (how many blocks) - if drawing nested arcs it's usually a good idea to set strokeWidth to at least 2 so that there are no gaps between each arc. The arc method uses a [bresenham algorithm][bres] to plot points along the circumference. * fill - If true (or present) then the arc will be filled in. * quadrants (default: `{topleft:true,topright:true,bottomleft:true,bottomright:true}` - An object with 4 properties indicating which of the 4 quadrants of a circle to draw. If the quadrants property is absent then all 4 quadrants are drawn. #### Examples To draw a 1/4 circle (top right quadrant only) with a radius of 10 and stroke width of 2 blocks ... arc({blockType: blocks.iron, meta: 0, radius: 10, strokeWidth: 2, quadrants: { topright: true }, orientation: 'vertical', stack: 1, fill: false } ); ![arc example 1](img/arcex1.png) [bres]: http://en.wikipedia.org/wiki/Midpoint_circle_algorithm [dv]: http://www.minecraftwiki.net/wiki/Data_values ### Drone.door() method create a door - if a parameter is supplied an Iron door is created otherwise a wooden door is created. #### Parameters * doorType (optional - default wood) - If a parameter is provided then the door is Iron. #### Example To create a wooden door at the crosshairs/drone's location... var drone = new Drone(); drone.door(); To create an iron door... drone.door( blocks.door_iron ); ![iron door](img/doorex1.png) ### Drone.door_iron() method create an Iron door. ### Drone.door2() method Create double doors (left and right side) #### Parameters * doorType (optional - default wood) - If a parameter is provided then the door is Iron. #### Example To create double-doors at the cross-hairs/drone's location... drone.door2(); ![double doors](img/door2ex1.png) ### Drone.door2_iron() method Create double iron doors ### Drone.sign() method Signs must use block 63 (stand-alone signs) or 68 (signs on walls) #### Parameters * message - can be a string or an array of strings. * block - can be 63 or 68 #### Example To create a free-standing sign... drone.sign(["Hello","World"],63); ![ground sign](img/signex1.png) ... to create a wall mounted sign... drone.sign(["Welcome","to","Scriptopia"], 68 ); ![wall sign](img/signex2.png) ### Drone Trees methods * oak() * spruce() * birch() * jungle() #### Example To create 4 trees in a row, point the cross-hairs at the ground then type `/js ` and ... up( ).oak( ).right(8 ).spruce( ).right(8 ).birch( ).right(8 ).jungle( ); Trees won't always generate unless the conditions are right. You should use the tree methods when the drone is directly above the ground. Trees will usually grow if the drone's current location is occupied by Air and is directly above an area of grass (That is why the `up( )` method is called first). ![tree example](img/treeex1.png) None of the tree methods require parameters. Tree methods will only be successful if the tree is placed on grass in a setting where trees can grow. ### Drone.garden() method places random flowers and long grass (similar to the effect of placing bonemeal on grass) #### Parameters * width - the width of the garden * length - how far from the drone the garden extends #### Example To create a garden 10 blocks wide by 5 blocks long... garden(10,5); ![garden example](img/gardenex1.png) ### Drone.rand() method rand takes either an array (if each blockid has the same chance of occurring) or an object where each property is a blockid and the value is it's weight (an integer) #### Example place random blocks stone, mossy stone and cracked stone (each block has the same chance of being picked) rand( [blocks.brick.stone, blocks.brick.mossy, blocks.brick.cracked ],w,d,h) to place random blocks stone has a 50% chance of being picked, var distribution = {}; distribution[ blocks.brick.stone ] = 5; distribution[ blocks.brick.mossy ] = 3; distribution[ blocks.brick.cracked ] = 2; rand( distribution, width, height, depth) regular stone has a 50% chance, mossy stone has a 30% chance and cracked stone has just a 20% chance of being picked. ### Copy & Paste using Drone A drone can be used to copy and paste areas of the game world. ### Drone.copy() method Copies an area so it can be pasted elsewhere. The name can be used for pasting the copied area elsewhere... #### Parameters * name - the name to be given to the copied area (used by `paste`) * width - the width of the area to copy * height - the height of the area to copy * length - the length of the area (extending away from the drone) to copy #### Example drone.copy('somethingCool',10,5,10 ).right(12 ).paste('somethingCool' ); ### Drone.paste() method Pastes a copied area to the current location. #### Example To copy a 10x5x10 area (using the drone's coordinates as the starting point) into memory. the copied area can be referenced using the name 'somethingCool'. The drone moves 12 blocks right then pastes the copy. drone.copy('somethingCool',10,5,10 ) .right(12 ) .paste('somethingCool' ); ### Chaining All of the Drone methods return a Drone object, which means methods can be 'chained' together so instead of writing this... drone = new Drone(); drone.fwd(3); drone.left(2); drone.box(2); // create a grass block drone.up(); drone.box(2); // create another grass block drone.down(); ...you could simply write ... var drone = new Drone().fwd(3).left(2).box(2).up().box(2).down(); ... since each Drone method is also a global function that constructs a drone if none is supplied, you can shorten even further to just... fwd(3).left(2).box(2).up().box(2).down() The Drone object uses a [Fluent Interface][fl] to make ScriptCraft scripts more concise and easier to write and read. Minecraft's in-game command prompt is limited to about 80 characters so chaining drone commands together means more can be done before hitting the command prompt limit. For complex building you should save your commands in a new script file and load it using /js load() [fl]: http://en.wikipedia.org/wiki/Fluent_interface ### Drone Properties * x - The Drone's position along the west-east axis (x increases as you move east) * y - The Drone's position along the vertical axis (y increses as you move up) * z - The Drone's position along the north-south axis (z increases as you move south) * dir - The Drone's direction 0 is east, 1 is south , 2 is west and 3 is north. ### Extending Drone The Drone object can be easily extended - new buidling recipes/blueprints can be added and can become part of a Drone's chain using the *static* method `Drone.extend`. ### Drone.extend() static method Use this method to add new methods (which also become chainable global functions) to the Drone object. #### Parameters * name - The name of the new method e.g. 'pyramid'. * function - The method body. Alternatively if you provide just a function as a parameter, then the function name will be used as the new method name. For example the following two approaches are both valid. #### Example 1 Using name and function as parameters // submitted by [edonaldson][edonaldson] Drone.extend('pyramid', function( block,height) { this.chkpt('pyramid'); for ( var i = height; i > 0; i -= 2) { this.box(block, i, 1, i).up().right().fwd(); } return this.move('pyramid'); }); #### Example 2 Using just a named function as a parameter function pyramid( block,height) { this.chkpt('pyramid'); for ( var i = height; i > 0; i -= 2) { this.box(block, i, 1, i).up().right().fwd(); } return this.move('pyramid'); } Drone.extend( pyramid ); Once the method is defined (it can be defined in a new pyramid.js file) it can be used like so... var d = new Drone(); d.pyramid(blocks.brick.stone, 12); ... or simply ... pyramid(blocks.brick.stone, 12); [edonaldson]: https://github.com/edonaldson ### Drone Constants #### Drone.PLAYER_STAIRS_FACING An array which can be used when constructing stairs facing in the Drone's direction... var d = new Drone(); d.box(blocks.stairs.oak + ':' + Drone.PLAYER_STAIRS_FACING[d.dir]); ... will construct a single oak stair block facing the drone. #### Drone.PLAYER_SIGN_FACING An array which can be used when placing signs so they face in a given direction. This is used internally by the Drone.sign() method. It should also be used for placing any of the following blocks... * chest * ladder * furnace * dispenser To place a chest facing the Drone ... drone.box( blocks.chest + ':' + Drone.PLAYER_SIGN_FACING[drone.dir]); #### Drone.PLAYER_TORCH_FACING Used when placing torches so that they face towards the drone. drone.box( blocks.torch + ':' + Drone.PLAYER_TORCH_FACING[drone.dir]); ### Drone.times() Method The times() method makes building multiple copies of buildings easy. It's possible to create rows or grids of buildings without resorting to `for` or `while` loops. #### Parameters * numTimes (optional - default 2) : The number of times you want to repeat the preceding statements. #### Example Say you want to do the same thing over and over. You have a couple of options... * You can use a for loop... d = new Drone(); for ( var i =0;i < 4; i++) { d.cottage().right(8); } While this will fit on the in-game prompt, it's awkward. You need to declare a new Drone object first, then write a for loop to create the 4 cottages. It's also error prone, even the `for` loop is too much syntax for what should really be simple. * You can use a while loop... d = new Drone(); var i=4; while (i--) { d.cottage().right(8); } ... which is slightly shorter but still too much syntax. Each of the above statements is fine for creating a 1-dimensional array of structures. But what if you want to create a 2-dimensional or 3-dimensional array of structures? Enter the `times()` method. The `times()` method lets you repeat commands in a chain any number of times. So to create 4 cottages in a row you would use the following statement... cottage().right(8).times(4); ...which will build a cottage, then move right 8 blocks, then do it again 4 times over so that at the end you will have 4 cottages in a row. What's more the `times()` method can be called more than once in a chain. So if you wanted to create a *grid* of 20 houses ( 4 x 5 ), you would do so using the following statement... cottage().right(8).times(4).fwd(8).left(32).times(5); ... breaking it down... 1. The first 3 calls in the chain ( `cottage()`, `right(8)`, `times(4)` ) build a single row of 4 cottages. 2. The last 3 calls in the chain ( `fwd(8)`, `left(32)`, `times(5)` ) move the drone forward 8 then left 32 blocks (4 x 8) to return to the original x coordinate, then everything in the chain is repeated again 5 times so that in the end, we have a grid of 20 cottages, 4 x 5. Normally this would require a nested loop but the `times()` method does away with the need for loops when repeating builds. Another example: This statement creates a row of trees 2 by 3 ... oak().right(10).times(2).left(20).fwd(10).times(3) ... You can see the results below. ![times example 1](img/times-trees.png) ### Drone.blocktype() method Creates the text out of blocks. Useful for large-scale in-game signs. #### Parameters * message - The message to create - (use `\n` for newlines) * foregroundBlock (default: black wool) - The block to use for the foreground * backgroundBlock (default: none) - The block to use for the background #### Example To create a 2-line high message using glowstone... blocktype("Hello\nWorld",blocks.glowstone); ![blocktype example][imgbt1] [imgbt1]: img/blocktype1.png ### Drone.rainbow() method Creates a Rainbow. #### Parameters * radius (optional - default:18) - The radius of the rainbow #### Example var d = new Drone(); d.rainbow(30); ![rainbow example](img/rainbowex1.png) ### Drone.sphere() method Creates a sphere. #### Parameters * block - The block the sphere will be made of. * radius - The radius of the sphere. #### Example To create a sphere of Iron with a radius of 10 blocks... sphere( blocks.iron, 10); ![sphere example](img/sphereex1.png) Spheres are time-consuming to make. You *can* make large spheres (250 radius) but expect the server to be very busy for a couple of minutes while doing so. ### Drone.sphere0() method Creates an empty sphere. #### Parameters * block - The block the sphere will be made of. * radius - The radius of the sphere. #### Example To create a sphere of Iron with a radius of 10 blocks... sphere0( blocks.iron, 10); Spheres are time-consuming to make. You *can* make large spheres (250 radius) but expect the server to be very busy for a couple of minutes while doing so. ### Drone.hemisphere() method Creates a hemisphere. Hemispheres can be either north or south. #### Parameters * block - the block the hemisphere will be made of. * radius - the radius of the hemisphere * northSouth - whether the hemisphere is 'north' or 'south' #### Example To create a wood 'north' hemisphere with a radius of 7 blocks... hemisphere(blocks.oak, 7, 'north'); ![hemisphere example](img/hemisphereex1.png) ### Drone.hemisphere0() method Creates a hollow hemisphere. Hemispheres can be either north or south. #### Parameters * block - the block the hemisphere will be made of. * radius - the radius of the hemisphere * northSouth - whether the hemisphere is 'north' or 'south' #### Example To create a glass 'north' hemisphere with a radius of 20 blocks... hemisphere0(blocks.glass, 20, 'north'); ![hemisphere example](img/hemisphereex2.png) ### Drone.spiral_stairs() method Constructs a spiral staircase with slabs at each corner. #### Parameters * stairBlock - The block to use for stairs, should be one of the following... - 'oak' - 'spruce' - 'birch' - 'jungle' - 'cobblestone' - 'brick' - 'stone' - 'nether' - 'sandstone' - 'quartz' * flights - The number of flights of stairs to build. ![Spiral Staircase](img/spiralstair1.png) #### Example To construct a spiral staircase 5 floors high made of oak... spiral_stairs('oak', 5); ## Example Plugin #1 - A simple extension to Minecraft. A simple minecraft plugin. The most basic module. ### Usage: At the in-game prompt type ... /js hello(self) ... and a message `Hello {player-name}` will appear (where {player-name} is replaced by your own name). This example demonstrates the basics of adding new functionality which is only usable by server operators or users with the scriptcraft.evaluate permission. By default, only ops are granted this permission. The `hello` function below is only usable by players with the scriptcraft.evaluate permission since it relies on the `/js` command to execute. exports.hello = function(player){ echo( player, 'Hello ' + player.name); }; ## Example Plugin #2 - Making extensions available for all players. A simple minecraft plugin. Commands for other players. ### Usage: At the in-game prompt type ... /jsp hello ... and a message `Hello {player-name}` will appear (where {player-name} is replaced by your own name). This example demonstrates the basics of adding new functionality which is usable all players or those with the scriptcraft.proxy permission. By default, all players are granted this permission. This differs from example 1 in that a new 'jsp ' command extension is defined. Since all players can use the `jsp` command, all players can use the new extension. Unlike the previous example, the `jsp hello` command does not evaluate javascript code so this command is much more secure. command('hello', function (parameters, player) { echo( player, 'Hello ' + player.name); }); ## Example Plugin #3 - Limiting use of commands to operators only. A simple minecraft plugin. Commands for operators only. ### Usage: At the in-game prompt type ... /jsp op-hello ... and a message `Hello {player-name}` will appear (where {player-name} is replaced by your own name). This example demonstrates the basics of adding new functionality which is usable all players or those with the scriptcraft.proxy permission. By default, all players are granted this permission. In this command though, the function checks to see if the player is an operator and if they aren't will return immediately. This differs from example 2 in that the function will only print a message for operators. command('op-hello', function (parameters, player) { if (!player.op){ echo( player, 'Only operators can do this.'); return; } echo( player, 'Hello ' + player.name); }); ## Example Plugin #4 - Using parameters in commands. A simple minecraft plugin. Handling parameters. ### Usage: At the in-game prompt type ... /jsp hello-params Hi /jsp hello-params Saludos /jsp hello-params Greetings ... and a message `Hi {player-name}` or `Saludos {player-name}` etc will appear (where {player-name} is replaced by your own name). This example demonstrates adding and using parameters in commands. This differs from example 3 in that the greeting can be changed from a fixed 'Hello ' to anything you like by passing a parameter. command( 'hello-params', function ( parameters, player ) { var salutation = parameters[0] ; echo( player, salutation + ' ' + player.name ); }); ## Example Plugin #5 - Re-use - Using your own and others modules. A simple minecraft plugin. Using Modules. ### Usage: At the in-game prompt type ... /jsp hello-module ... and a message `Hello {player-name}` will appear (where {player-name} is replaced by your own name). This example demonstrates the use of modules. In example-1-hello-module.js we created a new javascript module. In this example, we use that module... * We load the module using the `require()` function. Because this module and the module we require are n the same directory, we specify `'./example-1-hello-module'` as the path (when loading a module from the same directory, `./` at the start of the path indicates that the file should be searched for in the same directory. * We assign the loaded module to a variable (`greetings`) and then use the module's `hello` method to display the message. Source Code... var greetings = require('./example-1-hello-module'); command( 'hello-module', function( parameters, player ) { greetings.hello( player ); }); ## Example Plugin #6 - Re-use - Using 'utils' to get Player objects. A simple minecraft plugin. Finding players by name. ### Usage: At the in-game prompt type ... /jsp hello-byname {player-name} ... substituting {player-name} with the name of a player currently online and a message `Hello ...` will be sent to the named player. This example builds on example-5 and also introduces a new concept - use of shared modules. That is : modules which are not specific to any one plugin or set of plugins but which can be used by all plugins. Shared modules should be placed in the `scriptcraft/modules` directory. * The utils module is used. Because the 'utils' module is located in the modules folder we don't need to specify an exact path, just 'utils' will do. * The `utils.player()` function is used to obtain a player object matching the player name. Once a player object is obtained, a message is sent to that player. Source Code ... var utils = require('utils'); var greetings = require('./example-1-hello-module'); command( 'hello-byname', function( parameters, sender ) { var playerName = parameters[0]; var recipient = utils.player( playerName ); if ( recipient ) { greetings.hello( recipient ); } else { echo( sender, 'Player ' + playerName + ' not found.' ); } }); ## Example Plugin #7 - Listening for events, Greet players when they join the game. A simple event-driven minecraft plugin. How to handle Events. This example demonstrates event-driven programming. The code below will display the version of ScriptCraft every time an operator joins the game. This module is notable from previous modules for the following reasons... 1. It does not export any functions or variables. That's fine. Not all modules need export stuff. Code in this module will be executed when the module is first loaded. Because it is in the `/scriptcraft/plugins` directory, it will be loaded automatically when the server starts up. 2. It uses ScriptCraft's `events.on()` function to add a new *Event Handler*. An *Event Handler* is a just a function which gets called whenever a particular *event* happens in the game. The function defined below will only be executed whenever a player joins the game. This style of program is sometimes refered to as *Event-Driven Programming*. Adding new *Event Handlers* in ScriptCraft is relatively easy. Use the `events.on()` function to add a new event handler. It takes 2 parameters... 1. The Event Name, in this case `'player.PlayerJoinEvent'`. You can browse [all possible Bukkit events][bkevts] (click the 'Next Package' and 'Previous Package' links to browse). 2. The event handling function (also sometimes refered to as a 'callback'). In ScriptCraft, this function takes a single parameter, an event object. All of the information about the event is in the event object. In the example below, if a player joins the server and is an operator, then the ScriptCraft plugin information will be displayed to that player. What's also notable about this example is how it uses the [Bukkit API][bkapi]. The code... if (event.player.op) ... is a succinct way of accessing object properties which in Java would have to be written as ... if (event.getPlayer().isOp()) ... ScriptCraft uses a special version of JavaScript which comes bundled with Java (Minecraft is written in Java) and JavaScript in Java can access properties of Java objects more succinctly than in Java itself. What this means in practice is that when you're perusing the [Bukkit API Reference][bkapi] and come across a method like [Player.getAllowFlight()][bkgaf], you can write code like this... var allowFlight = player.getAllowFlight(); // java style ... or the more succinct ... var allowFlight = player.allowFlight; // javascript style ... Which style you choose is up to you but `player.allowFlight` is cleaner and more readable. Similarly where you see a method like [Player.setAllowFlight()][bksaf], you can write ... player.setAllowFlight(true); // java style ... or the more readable... player.allowFlight = true; // javascript style ... Which style you choose is up to you. [bkevts]: http://jd.bukkit.org/dev/apidocs/org/bukkit/event/package-summary.html [bkgaf]: http://jd.bukkit.org/dev/apidocs/org/bukkit/entity/Player.html#getAllowFlight() [bksaf]: http://jd.bukkit.org/dev/apidocs/org/bukkit/entity/Player.html#setAllowFlight() [bkapi]: http://jd.bukkit.org/dev/apidocs/ events.on( 'player.PlayerJoinEvent', function( event ) { if ( event.player.op ) { echo( event.player, 'Welcome to ' + __plugin); } }); Update: Since version 2.0.8 the above code can be replaced by the more succinct: events.playerJoin( function( event ) { if ( event.player.op ) { echo( event.player, 'Welcome to ' + __plugin); } }); ## Arrows Plugin The arrows mod adds fancy arrows to the game. Arrows which... * Launch fireworks. * Explode on impact. * Force Lightning to strike where they land. * Teleport the player to the landing spot. * Spawn Trees at the landing spot. ### Usage: * `/js arrows.firework(self)` - A firework launches where the the arrow lands. * `/js arrows.lightning(self)` - lightning strikes where the arrow lands. * `/js arrows.teleport(self)` - makes player teleport to where arrow has landed. * `/js arrows.flourish(self)` - makes a tree grow where the arrow lands. * `/js arrows.explosive(self)` - makes arrows explode. * `/js arrows.normal(self)` sets arrow type to normal. * `/js arrows.sign(self)` turns a targeted sign into a Arrows menu All of the above functions can take an optional player object or name as a parameter. For example: `/js arrows.explosive('player23')` makes player23's arrows explosive. ## Spawn Plugin Allows in-game operators to easily spawn creatures at current location. ### Usage /jsp spawn cow /jsp spawn sheep /jsp spawn wolf This command supports TAB completion so to see a list of possible entitities, type `/jsp spawn ' at the in-game command prompt, then press TAB. Visit