scriptcraft/src/main/js/plugins/arrows.js

'use strict';
/*global require, __plugin, exports, events, setTimeout */
/*************************************************************************
## 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 an 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.
 
***/
var Drone = require('drone'),
    teleport = require('teleport'),
    signs = require('signs'),
    fireworks = require('fireworks'),
    utils = require('utils'),
    bkArrow = org.bukkit.entity.Arrow,
    bkPlayer = org.bukkit.entity.Player,
    EXPLOSIVE_YIELD = 2.5,
    store = persist('arrows',{ players: { } }),
    arrows = {},
    i,
    type,
    _types = [ 'Normal', 'Explosive', 'Teleport', 'Flourish', 'Lightning', 'Firework' ];

exports.arrows = arrows;


for ( i = 0; i < _types.length; i++ ) {
  type = _types[i].toLowerCase();
  // iife (immediately-invoked function expression)
  arrows[ type ] = ( function( n ) {
    return function( player ) {
      player = utils.player( player );
      if ( player ) {
        store.players[ player.name ] = n;
      } else {
        console.warn('arrows.' + n + ' No player ' + player);
      }
    };
  } )( i );
}

/*
 called when the player chooses an arrow option from a menu sign
 */
var _onMenuChoice = function( event ) {
  store.players[ event.player.name ] = event.number;
};

var convertToArrowSign = signs.menu( 'Arrow', _types, _onMenuChoice );

/*
 turn a sign into a menu of arrow choices
 */
arrows.sign = function( cmdSender ) {
  var sign = signs.getTargetedBy( cmdSender );
  if ( !sign ) {
    throw new Error( 'You must first look at a sign!' );
  }
  return convertToArrowSign( sign, true );
};

/*
 event handler called when a projectile hits something
 */
function onBukkitArrowHit( event ) {
  var projectile = event.entity,
      world = projectile.world,
      shooter = projectile.shooter,
      fireworkCount = 5,
      arrowType;

  function launch(){
    fireworks.firework( projectile.location );
    if ( --fireworkCount ) { 
      setTimeout( launch, 2000 );
    }
  }
  if (projectile instanceof bkArrow 
      && shooter instanceof bkPlayer) {

    arrowType = store.players[ shooter.name ];

    switch ( arrowType ) {
    case 1:
      projectile.remove();
      world.createExplosion( projectile.location, EXPLOSIVE_YIELD );
      break;
    case 2:
      projectile.remove();
      teleport(shooter, projectile.location);
      break;
    case 3:
      projectile.remove();
      new Drone(projectile.location).oak();
      break;
    case 4: 
      projectile.remove();
      world.strikeLightning( projectile.location );
      break;
    case 5:
      projectile.remove();
      launch();
      break;
    }
  }
}

function onCanaryArrowHit( event ) {
  var projectile = event.projectile,
    world = projectile.world,
    shooter = projectile.owner,
    fireworkCount = 5,
    arrowType,
    cmArrow = Packages.net.canarymod.api.entity.Arrow,
    cmPlayer = Packages.net.canarymod.api.entity.living.humanoid.Player,
    loc = projectile.location,
    launch = function( ) {
      fireworks.firework( loc);
      if ( --fireworkCount ) { 
        setTimeout( launch, 2000 );
      }
    };

  if (projectile instanceof cmArrow && shooter instanceof cmPlayer) {

    arrowType = store.players[ shooter.name ];

    switch ( arrowType ) {
    case 1:
      projectile.destroy();
      world.makeExplosion( shooter, loc, EXPLOSIVE_YIELD, true );
      break;
    case 2:
      projectile.destroy();
      teleport(shooter, loc);
      break;
    case 3:
      projectile.destroy();
      new Drone( loc ).oak();
      break;
    case 4: 
      projectile.destroy();
      world.makeLightningBolt( loc );
      break;
    case 5:
      projectile.destroy();
      launch();
      break;
    }
  }
}
events.projectileHit( __plugin.bukkit ? onBukkitArrowHit : onCanaryArrowHit);