diff --git a/src/main/javascript/drone/blocks.js b/src/main/javascript/drone/blocks.js
deleted file mode 100644
index c265d17..0000000
--- a/src/main/javascript/drone/blocks.js
+++ /dev/null
@@ -1,274 +0,0 @@
-/************************************************************************
-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).
-
-***/
-var blocks = {
-    air: 0,
-    stone: 1,
-    grass: 2,
-    dirt: 3,
-    cobblestone: 4,
-    oak: 5,
-    spruce: '5:1',
-    birch: '5:2',
-    jungle: '5:3',
-    sapling: {
-        oak: 6,
-        spruce: '6:1',
-        birch: '62:2',
-        jungle: '6:3'
-    },
-    bedrock: 7,
-    water: 8,
-    water_still: 9,
-    lava: 10,
-    lava_still: 11,
-    sand: 12,
-    gravel: 13,
-    gold_ore: 14,
-    iron_ore: 15,
-    coal_ore: 16,
-    wood: 17,
-    leaves: 18,
-    sponge: 19,
-    glass: 20,
-    lapis_lazuli_ore: 21,
-    lapis_lazuli_block: 22,
-    dispenser: 23,
-    sandstone: 24,
-    note: 25,
-    bed: 26,
-    powered_rail: 27,
-    detector_rail: 28,
-    sticky_piston: 29,
-    cobweb: 30,
-    grass_tall: 31,
-    dead_bush: 32,
-    piston: 33,
-    piston_extn: 34,
-    wool: {
-      white: 35 // All other colors added below
-    },
-    dandelion: 37,
-    flower_yellow: 37,
-    rose: 38,
-    flower_red: 38,
-    mushroom_brown: 39,
-    mushroom_red: 40,
-    gold: 41,
-    iron: 42,
-    tnt: 46,
-    bookshelf: 47,
-    moss_stone: 48,
-    obsidian: 49,
-    torch: 50,
-    fire: 51,
-    monster_spawner: 52,
-    stairs: {
-        oak: 53,
-        cobblestone: 67,
-        brick: 108,
-        stone: 109,
-        nether: 114,
-        sandstone: 128,
-        spruce: 134,
-        birch: 135,
-        jungle: 136,
-        quartz: 156
-    },
-    chest: 54,
-    redstone_wire: 55,
-    diamond_ore: 56,
-    diamond: 57,
-    crafting_table: 58,
-    wheat_seeds: 59,
-    farmland: 60,
-    furnace: 61,
-    furnace_burning: 62,
-    sign_post: 63,
-    door_wood: 64,
-    ladder: 65,
-    rail: 66,
-    sign: 68,
-    lever: 69,
-    pressure_plate_stone: 70,
-    door_iron: 71,
-    pressure_plate_wood: 72,
-    redstone_ore: 73,
-    redstone_ore_glowing: 74,
-    torch_redstone: 75,
-    torch_redstone_active: 76,
-    stone_button: 77,
-    ice: 79,
-    snow: 80,
-    cactus: 81,
-    clay: 82,
-    sugar_cane: 83,
-    jukebox: 84,
-    fence: 85,
-    pumpkin: 86,
-    netherrack: 87,
-    soulsand: 88,
-    glowstone: 89,
-    netherportal: 90,
-    jackolantern: 91,
-    cake: 92,
-    redstone_repeater: 93,
-    redeston_repeater_active: 94,
-    chest_locked: 95,
-    trapdoor: 96,
-    monster_egg: 97,
-    brick: {
-        stone: 98,
-        mossy: '98:1',
-        cracked: '98:2',
-        chiseled: '98:3',
-        red: 45
-    },
-    mushroom_brown_huge: 99,
-    mushroom_red_huge: 100,
-    iron_bars: 101,
-    glass_pane: 102,
-    melon: 103,
-    pumpkin_stem: 104,
-    melon_stem: 105,
-    vines: 106,
-    fence_gate: 107,
-    mycelium: 110,
-    lily_pad: 111,
-    nether: 112,
-    nether_fence: 113,
-    netherwart: 115,
-    table_enchantment: 116,
-    brewing_stand: 117,
-    cauldron: 118,
-    endportal: 119,
-    endportal_frame: 120,
-    endstone: 121,
-    dragon_egg: 122,
-    redstone_lamp: 123,
-    redstone_lamp_active: 124,
-    slab: {
-        snow: 78,
-        stone: 44,
-        sandstone: '44:1',
-        wooden: '44:2',
-        cobblestone: '44:3',
-        brick: '44:4',
-        stonebrick: '44:5',
-        netherbrick:'44:6',
-        quartz: '44:7',
-        oak: 126,
-        spruce: '126:1',
-        birch: '126:2',
-        jungle: '126:3',
-        upper: {
-            stone: '44:8',
-            sandstone: '44:9',
-            wooden: '44:10',
-            cobblestone: '44:11',
-            brick: '44:12',
-            stonebrick: '44:13',
-            netherbrick:'44:14',
-            quartz: '44:15',
-            oak: '126:8',
-            spruce: '126:9',
-            birch: '126:10',
-            jungle: '126:11',
-        }
-    },
-    cocoa: 127,
-    emerald_ore: 129,
-    enderchest: 130,
-    tripwire_hook: 131,
-    tripwire: 132,
-    emerald: 133,
-    command: 137,
-    beacon: 138,
-    cobblestone_wall: 139,
-    flowerpot: 140,
-    carrots: 141,
-    potatoes: 142,
-    button_wood: 143,
-    mobhead: 144,
-    anvil: 145,
-    chest_trapped: 146,
-    pressure_plate_weighted_light: 147,
-    pressure_plate_weighted_heavy: 148,
-    redstone_comparator: 149,
-    redstone_comparator_active: 150,
-    daylight_sensor: 151,
-    redstone: 152,
-    netherquartzore: 153,
-    hopper: 154,
-    quartz: 155,
-    rail_activator: 157,
-    dropper: 158,
-    stained_clay: {
-      white: 159 // All other colors added below
-    },
-    hay: 170,
-    carpet: {
-      white: 171 // All other colors added below
-    },
-    hardened_clay: 172,
-    coal_block: 173
-};
-
-(function() {
-  // Add all available colors to colorized block collections
-
-  var colors = {
-    orange: ':1',
-    magenta: ':2',
-    lightblue: ':3',
-    yellow: ':4',
-    lime: ':5',
-    pink: ':6',
-    gray: ':7',
-    lightgray: ':8',
-    cyan: ':9',
-    purple: ':10',
-    blue: ':11',
-    brown: ':12',
-    green: ':13',
-    red: ':14',
-    black: ':15'
-  };
-  var colorized_blocks = ["wool", "stained_clay", "carpet"];
-
-  for (var i = 0, len = colorized_blocks.length; i < len; i++) {
-    var block = colorized_blocks[i],
-        data_value = blocks[block].white;
-
-    for (var color in colors) {
-      blocks[block][color] = data_value + colors[color];
-    }
-  };
-
-  /*
-    rainbow colors - a convenience
-    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.
-  */
-  blocks.rainbow = [blocks.wool.red,
-                    blocks.wool.orange,
-                    blocks.wool.yellow,
-                    blocks.wool.lime,
-                    blocks.wool.lightblue,
-                    blocks.wool.blue,
-                    blocks.wool.purple];
-})();
diff --git a/src/main/javascript/drone/blocktype.js b/src/main/javascript/drone/blocktype.js
deleted file mode 100644
index c1ca783..0000000
--- a/src/main/javascript/drone/blocktype.js
+++ /dev/null
@@ -1,373 +0,0 @@
-/************************************************************************
-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
-
-***/
-(function(){
- 
-    var bitmaps = {
-        raw: {
-            '0':' ### '+
-                ' # # '+
-                ' # # '+
-                ' # # '+
-                ' ### ',
-            
-            '1':'  #  '+
-                ' ##  '+
-                '  #  '+
-                '  #  '+
-                ' ### ',
-            
-            '2':' ### '+
-                '   # '+
-                ' ### '+
-                ' #   '+
-                ' ### ',
-            
-            '3':' ### '+
-                '   # '+
-                '  ## '+
-                '   # '+
-                ' ### ',
-
-            '4':'   # '+
-                '  ## '+
-                ' # # '+
-                ' ### '+
-                '   # ',
-            
-            '5':' ### '+
-                ' #   '+
-                ' ### '+
-                '   # '+
-                ' ### ',
-            
-            '6':' ### '+
-                ' #   '+
-                ' ### '+
-                ' # # '+
-                ' ### ',
-            
-            '7':' ### '+
-                '   # '+
-                '  #  '+
-                '  #  '+
-                '  #  ',
-
-            '8':' ### '+
-                ' # # '+
-                ' ### '+
-                ' # # '+
-                ' ### ',
-
-            '9':' ### '+
-                ' # # '+
-                ' ### '+
-                '   # '+
-                ' ### ',
-
-            'a':' ### '+
-                ' # # '+
-                ' ### '+
-                ' # # '+
-                ' # # ',
-
-            'b':' ##  '+
-                ' # # '+
-                ' ##  '+
-                ' # # '+
-                ' ##  ',
-            
-            'c':'  ## '+
-                ' #   '+
-                ' #   '+
-                ' #   '+
-                '  ## ',
-
-            'd':' ##  '+
-                ' # # '+
-                ' # # '+
-                ' # # '+
-                ' ##  ',
-
-            'e':' ### '+
-                ' #   '+
-                ' ##  '+
-                ' #   '+
-                ' ### ',
-
-            'f':' ### '+
-                ' #   '+
-                ' ##  '+
-                ' #   '+
-                ' #   ',
-
-            'g':' ### '+
-                ' #   '+
-                ' #   '+
-                ' # # '+
-                ' ### ',
-
-            'h':' # # '+
-                ' # # '+
-                ' ### '+
-                ' # # '+
-                ' # # ',
-
-            'i':' ### '+
-                '  #  '+
-                '  #  '+
-                '  #  '+
-                ' ### ',
-            
-            'j':' ### '+
-                '  #  '+
-                '  #  '+
-                '  #  '+
-                ' #   ',
-            
-            'k':' #   '+
-                ' # # '+
-                ' ##  '+
-                ' # # '+
-                ' # # ',
-            
-            'l':' #   '+
-                ' #   '+
-                ' #   '+
-                ' #   '+
-                ' ### ',
-            
-            'm':' # # '+
-                ' ### '+
-                ' # # '+
-                ' # # '+
-                ' # # ',
-
-            'n':' ##  '+
-                ' # # '+
-                ' # # '+
-                ' # # '+
-                ' # # ',
-
-            'o':'  #  '+
-                ' # # '+
-                ' # # '+
-                ' # # '+
-                '  #  ',
-
-            'p':' ### '+
-                ' # # '+
-                ' ### '+
-                ' #   '+
-                ' #   ',
-            
-            'q':' ### '+
-                ' # # '+
-                ' # # '+
-                ' ### '+
-                '   # ',
-
-            'r':' ##  '+
-                ' # # '+
-                ' ##  '+
-                ' # # '+
-                ' # # ',
-
-            's':'  ## '+
-                ' #   '+
-                ' ### '+
-                '   # '+
-                ' ##  ',
-
-            't':' ### '+
-                '  #  '+
-                '  #  '+
-                '  #  '+
-                '  #  ',
-
-            'u':' # # '+
-                ' # # '+
-                ' # # '+
-                ' # # '+
-                ' ### ',
-
-            'v':' # # '+
-                ' # # '+
-                ' # # '+
-                ' # # '+
-                '  #  ',
-
-            'w':' # # '+
-                ' # # '+
-                ' # # '+
-                ' ### '+
-                ' # # ',
-
-            'x':' # # '+
-                ' # # '+
-                '  #  '+
-                ' # # '+
-                ' # # ',
-
-            'y':' # # '+
-                ' # # '+
-                ' # # '+
-                '  #  '+
-                '  #  ',
-            
-            'z':' ### '+
-                '   # '+
-                '  #  '+
-                ' #   '+
-                ' ### ',
-            
-            '!':' # '+
-                ' # '+
-                ' # '+
-                '   '+
-                ' # ',
-
-            ':':'   '+
-                ' # '+
-                '   '+
-                ' # '+
-                '   ',
-
-            ';':'    '+
-                '  # '+
-                '    '+
-                '  # '+
-                ' #  ',
-
-            ',':'    '+
-                '    '+
-                '    '+
-                '  # '+
-                ' #  ',
-
-            '/':'  # '+
-                '  # '+
-                '  # '+
-                ' #  '+
-                ' #  ',
-
-            '+':'     '+
-                '  #  '+
-                ' ### '+
-                '  #  '+
-                '     ',
-            
-            '-':'     '+
-                '     '+
-                ' ### '+
-                '     '+
-                '     ',
-
-            '.':'   '+
-                '   '+
-                '   '+
-                '   '+
-                ' # ',
-
-            "'":' # '+
-                ' # '+
-                '   '+
-                '   '+
-                '   ',
-            
-            ' ':'   '+
-                '   '+
-                '   '+
-                '   '+
-                '   '
-        },
-        computed: {}
-    };
-    /*
-      wph 20130121 compute the width, and x,y coords of pixels ahead of time
-     */
-    for (var c in bitmaps.raw){
-        var bits = bitmaps.raw[c];
-        var width = bits.length/5;
-        var bmInfo = {"width": width,"pixels":[]}
-        bitmaps.computed[c] = bmInfo;
-        for (var j = 0; j < bits.length; j++){
-            if (bits.charAt(j) != ' '){
-                bmInfo.pixels.push([j%width,Math.ceil(j/width)]);
-            }
-        }
-    }
-
-
-    //
-    // message
-    //   string with text to be displayed
-    // fg
-    //   foreground material. The material the text will be in.
-    // bg
-    //   background material, optional. The negative space within the bounding box of the text.
-    //
-    Drone.extend('blocktype', function(message,fg,bg){
-
-        this.chkpt('blocktext');
-
-        if (typeof fg == "undefined")
-            fg = blocks.wool.black;
-
-        var bmfg = this._getBlockIdAndMeta(fg);
-        var bmbg = null;
-        if (typeof bg != "undefined")
-            bmbg = this._getBlockIdAndMeta(bg);
-        var lines = message.split("\n");
-        var lineCount = lines.length;    
-        for (var h = 0;h < lineCount; h++) {
-            var line = lines[h];
-            line = line.toLowerCase().replace(/[^0-9a-z \.\-\+\/\;\'\:\!]/g,"");
-            this.up(7*(lineCount-(h+1)));
-            
-            for (var i =0;i < line.length; i++)  {
-                var ch = line.charAt(i)
-                var bits = bitmaps.computed[ch];
-                if (typeof bits == "undefined"){
-                    bits = bitmaps.computed[' '];
-                }
-                var charWidth = bits.width;
-                if (typeof bg != "undefined")
-                    this.cuboidX(bmbg[0],bmbg[1],charWidth,7,1);
-                for (var j = 0;j < bits.pixels.length;j++){
-                    this.chkpt('btbl');
-                    var x = bits.pixels[j][0];
-                    var y = bits.pixels[j][1];
-                    this.up(6-y).right(x).cuboidX(bmfg[0],bmfg[1]);
-                    this.move('btbl');
-                }
-                this.right(charWidth-1);
-            }
-            this.move('blocktext');
-        }
-        
-        return this.move('blocktext');
-    });
-}());
-
-
diff --git a/src/main/javascript/drone/contrib/castle.js b/src/main/javascript/drone/contrib/castle.js
deleted file mode 100644
index 9cb9d46..0000000
--- a/src/main/javascript/drone/contrib/castle.js
+++ /dev/null
@@ -1,49 +0,0 @@
-//
-// a castle is just a big wide fort with 4 taller forts at each corner
-//
-Drone.extend('castle', function(side, height)
-{
-    // 
-    // use sensible default parameter values
-    // if no parameters are supplied
-    //
-    if (typeof side == "undefined")
-        side = 24;
-    if (typeof height == "undefined")
-        height = 10;
-    if (height < 8 || side < 20)
-        throw new java.lang.RuntimeException("Castles must be at least 20 wide X 8 tall");
-    //
-    // remember where the drone is so it can return 'home'
-    //
-    this.chkpt('castle');
-    // 
-    // how big the towers at each corner will be...
-    //
-    var towerSide = 10;
-    var towerHeight = height+4;
-
-    //
-    // the main castle building will be front and right of the first tower
-    //
-    this.fwd(towerSide/2).right(towerSide/2);
-    //
-    // the castle is really just a big fort with 4 smaller 'tower' forts at each corner
-    //
-    this.fort(side,height);
-    //
-    // move back to start position
-    //
-    this.move('castle');
-    //
-    // now place 4 towers at each corner (each tower is another fort)
-    //
-    for (var corner = 0; corner < 4; corner++)
-    {
-        // construct a 'tower' fort
-        this.fort(towerSide,towerHeight); 
-        // move forward the length of the castle then turn right
-        this.fwd(side+towerSide-1).turn(); 
-    }
-    return this.move('castle');
-});
diff --git a/src/main/javascript/drone/contrib/chessboard.js b/src/main/javascript/drone/contrib/chessboard.js
deleted file mode 100644
index e05679d..0000000
--- a/src/main/javascript/drone/contrib/chessboard.js
+++ /dev/null
@@ -1,33 +0,0 @@
-/**
-* Creates a tile pattern of given block types and size
-*
-* Paramters:
-*  whiteBlock - blockId used for the traditional white portion of the chessboard
-*  blackBlock - blockId used for the traditional black portion of the chessboard
-*  width - width of the chessboard
-*  height - height of the chessboard
-*/
-Drone.extend("chessboard", function(whiteBlock, blackBlock, width, depth) {
-    this.chkpt('chessboard-start');
-    if (typeof whiteBlock == "undefined")
-        whiteBlock = blocks.wool.white;
-    if (typeof blackBlock == "undefined")
-        blackBlock = blocks.wool.black;
-    if (typeof width == "undefined")
-        width = 8;
-    if (typeof depth == "undefined")
-        depth = width;
-
-    for(var i = 0; i < width; ++i) {
-        for(var j = 0; j < depth; ++j) {
-            var block = blackBlock;
-            if((i+j)%2 == 1) {
-                block = whiteBlock;
-            }
-            this.box(block);
-            this.right();
-        }
-        this.move('chessboard-start').fwd(i+1);
-    }
-    return this.move('chessboard-start');
-});
diff --git a/src/main/javascript/drone/contrib/cottage.js b/src/main/javascript/drone/contrib/cottage.js
deleted file mode 100644
index e5a2321..0000000
--- a/src/main/javascript/drone/contrib/cottage.js
+++ /dev/null
@@ -1,83 +0,0 @@
-//
-// need to use the drone module to create buildings easily
-// it can be done using calls to putBlock(), putSign(), getPlayerPos() and getMousePos()
-// but it's easier to use the Drone class
-// __folder is a special javascript variable whose value is the directory where the 
-// current script resides.
-//
-// usage: 
-// [1] to build a cottage at the player's current location or the cross-hairs location...
-//
-// /js cottage();
-// 
-// [2] to build a cottage using an existing drone...
-// 
-// /js drone.cottage();
-//
-
-Drone.extend('cottage',function ()
-{
-    this.chkpt('cottage')
-        .box0(48,7,2,6)  // 4 walls
-        .right(3).door() // door front and center
-        .up(1).left(2).box(102) // windows to left and right
-        .right(4).box(102)
-        .left(5).up().prism0(53,7,6);
-    //
-    // put up a sign near door. 
-    //
-    this.down().right(4).sign(["Home","Sweet","Home"],68);
-    
-    return this.move('cottage');
-});
-//
-// a more complex script that builds an tree-lined avenue with
-// cottages on both sides.
-//
-Drone.extend('cottage_road', function(numberCottages)
-{
-    if (typeof numberCottages == "undefined"){
-        numberCottages = 6;
-    }
-    var i=0, distanceBetweenTrees = 11;
-    //
-    // step 1 build the road.
-    //
-    var cottagesPerSide = Math.floor(numberCottages/2);
-    this
-        .chkpt("cottage_road") // make sure the drone's state is saved.
-        .box(43,3,1,cottagesPerSide*(distanceBetweenTrees+1)) // build the road
-        .up().right() // now centered in middle of road
-        .chkpt("cr"); // will be returning to this position later
-
-    //
-    // step 2 line the road with trees
-    //
-    for (; i < cottagesPerSide+1;i++){
-        this
-            .left(5).oak() 
-            .right(10).oak()
-            .left(5) // return to middle of road
-            .fwd(distanceBetweenTrees+1); // move forward.
-    }
-    this.move("cr").back(6); // move back 1/2 the distance between trees
-
-    // this function builds a path leading to a cottage.
-    function pathAndCottage(d){
-        return d.down().box(43,1,1,5).fwd(5).left(3).up().cottage();
-    };
-    //
-    // step 3 build cottages on each side
-    //
-    for (i = 0;i < cottagesPerSide; i++)
-    {
-        this.fwd(distanceBetweenTrees+1).chkpt("r"+i);
-        // build cottage on left
-        pathAndCottage(this.turn(3)).move("r"+i);
-        // build cottage on right
-        pathAndCottage(this.turn()).move("r"+i);
-    }
-    // return drone to where it was at start of function
-    return this.move("cottage_road"); 
-});
-
diff --git a/src/main/javascript/drone/contrib/dancefloor.js b/src/main/javascript/drone/contrib/dancefloor.js
deleted file mode 100644
index b961a19..0000000
--- a/src/main/javascript/drone/contrib/dancefloor.js
+++ /dev/null
@@ -1,36 +0,0 @@
-//
-// Create a floor of colored tiles some of which emit light.
-// The tiles change color every second creating a strobe-lit dance-floor.
-// 
-// See it in action here => http://www.youtube.com/watch?v=UEooBt6NTFo
-//
-Drone.extend('dancefloor',function(width,length)
-{
-    if (typeof width == "undefined")
-        width = 5;
-    if (typeof length == "undefined")
-        length = width;
-    //
-    // create a separate Drone object to lay down disco tiles
-    //
-    var disco = new Drone(this.x, this.y, this.z, this.dir, this.world);
-    //
-    // under-floor lighting
-    //
-    disco.down().box(89,width,1,length).up();
-    var floorTiles = [35,35,'35:1','35:2','35:3','35:4','35:4','35:4','35:6',20,20];
-    //
-    // strobe gets called in a java thread - disco only lasts 30 seconds.
-    //
-    var discoTicks = 30;
-    var task = null;
-    var strobe = function() {
-        disco.rand(floorTiles,width,1,length);
-        if (!discoTicks--)
-            task.cancel();
-    };
-    var now = 0;
-    var everySecond = 20;
-    task = server.scheduler.runTaskTimer(__plugin,strobe,now,everySecond);
-    return this;
-});
diff --git a/src/main/javascript/drone/contrib/fort.js b/src/main/javascript/drone/contrib/fort.js
deleted file mode 100644
index 49aec69..0000000
--- a/src/main/javascript/drone/contrib/fort.js
+++ /dev/null
@@ -1,66 +0,0 @@
-//
-// constructs a medieval fort
-// 
-Drone.extend('fort', function(side, height)
-{
-    if (typeof side == "undefined")
-        side = 18;
-    if (typeof height == "undefined")
-        height = 6;
-    // make sure side is even
-    if (side%2)
-        side++;
-    if (height < 4 || side < 10)
-        throw new java.lang.RuntimeException("Forts must be at least 10 wide X 4 tall");
-    var brick = 98;
-    //
-    // build walls.
-    //
-    this.chkpt('fort').box0(brick,side,height-1,side);
-    //
-    // build battlements
-    //
-    this.up(height-1);
-    for (i = 0;i <= 3;i++){
-        var turret = [];
-        this.box(brick) // solid brick corners
-            .up().box('50:5').down() // light a torch on each corner
-            .fwd(); 
-        turret.push('109:'+ Drone.PLAYER_STAIRS_FACING[this.dir]);
-        turret.push('109:'+ Drone.PLAYER_STAIRS_FACING[(this.dir+2)%4]);
-        try{
-            this.boxa(turret,1,1,side-2).fwd(side-2).turn();
-        }catch(e){
-            self.sendMessage("ERROR: " + e.toString());
-        }
-    }
-    //
-    // build battlement's floor
-    //
-    this.move('fort');
-    this.up(height-2).fwd().right().box('126:0',side-2,1,side-2);
-    var battlementWidth = 3;
-    if (side <= 12)
-        battlementWidth = 2;
-    
-    this.fwd(battlementWidth).right(battlementWidth)
-        .box(0,side-((1+battlementWidth)*2),1,side-((1+battlementWidth)*2));
-    //
-    // add door
-    //
-    var torch = '50:' + Drone.PLAYER_TORCH_FACING[this.dir];
-    this.move('fort').right((side/2)-1).door2() // double doors
-        .back().left().up()
-        .box(torch) // left torch
-        .right(3)
-        .box(torch); // right torch
-    //
-    // add ladder up to battlements
-    //
-    var ladder = '65:' + Drone.PLAYER_SIGN_FACING[(this.dir+2)%4];
-    this.move('fort').right((side/2)-3).fwd(1) // move inside fort
-        .box(ladder, 1,height-1,1);
-    return this.move('fort');
-    
-});
-
diff --git a/src/main/javascript/drone/contrib/logo.js b/src/main/javascript/drone/contrib/logo.js
deleted file mode 100644
index 880a00e..0000000
--- a/src/main/javascript/drone/contrib/logo.js
+++ /dev/null
@@ -1,217 +0,0 @@
-//
-// Constructs the JS logo
-// https://raw.github.com/voodootikigod/logo.js/master/js.png
-//
-// fg
-//   the material that the letters JS will be made of
-// bg
-//   the material that the square will be made of
-//
-Drone.extend('logojs', function(fg, bg) {
-
-    // foreground defaults to gray wool
-    if (typeof fg == "undefined")
-        fg = '35:7';
-    // background defaults to gold blocks
-    if (typeof bg == "undefined")
-        bg = 41;
-
-    // Draw the sqaure
-    this.chkpt('logojs-start')
-        .up()
-        .box(bg, 100, 100, 1);
-
-    // Draw the J, starting with the hook
-    this.right(30).up(13)
-        .box(fg)
-        .right().down()
-        .box(fg, 1, 3, 1)
-        .right().down()
-        .box(fg, 1, 5, 1)
-        .right().down()
-        .box(fg, 1, 7, 1)
-        .right()
-        .box(fg, 1, 8, 1)
-        .right().down()
-        .box(fg, 1, 10, 1)
-        .right()
-        .box(fg, 1, 9, 1)
-        .right()
-        .box(fg, 1, 8, 1)
-        .right().down()
-        .box(fg, 2, 8, 1)
-        .right(2)
-        .box(fg, 4, 7, 1)
-        .right(4)
-        .box(fg, 1, 8, 1)
-        .right()
-        .box(fg, 1, 9, 1)
-        .right().up()
-        .box(fg, 3, 10, 1)
-        .right(3).up()
-        .box(fg, 2, 9, 1)
-        .right(2).up()
-        .box(fg, 2, 8, 1)
-        .right(2).up()
-        .box(fg, 1, 7, 1)
-        .right().up()
-        .box(fg, 1, 6, 1)
-        .right().up()
-        .box(fg, 1, 5, 1)
-        .right().up(2)
-        .box(fg, 1, 3, 1)
-        .left(9).up(3)
-        .box(fg, 10, 31, 1)
-
-    // Draw the S
-    // It's drawn in three strokes from bottom to top. Look for when
-    // it switches from .right() to .left() then back again
-
-        // move to starting point for S
-        .right(22).down(6)
-        // stroke 1
-        .box(fg)
-        .right().down()
-        .box(fg, 1, 3, 1)
-        .right().down()
-        .box(fg, 1, 5, 1)
-        .right().down()
-        .box(fg, 1, 7, 1)
-        .right()
-        .box(fg, 1, 8, 1)
-        .right().down()
-        .box(fg, 1, 10, 1)
-        .right()
-        .box(fg, 1, 9, 1)
-        .right()
-        .box(fg, 1, 8, 1)
-        .right().down()
-        .box(fg, 2, 8, 1)
-        .right(2)
-        .box(fg, 4, 7, 1)
-        .right(4)
-        .box(fg, 2, 8, 1)
-        .right(2)
-        .box(fg, 1, 9, 1)
-        .right().up()
-        .box(fg, 1, 9, 1)
-        .right()
-        .box(fg, 1, 10, 1)
-        .right()
-        .box(fg, 1, 22, 1)
-        .right().up()
-        .box(fg, 2, 20, 1)
-        .right().up()
-        .box(fg, 1, 18, 1)
-        .right().up()
-        .box(fg, 1, 17, 1)
-        .right().up()
-        .box(fg, 1, 15, 1)
-        .right().up()
-        .box(fg, 1, 13, 1)
-        .right().up(2)
-        .box(fg, 1, 9, 1)
-        .right().up(2)
-        .box(fg, 1, 5, 1)
-        // stroke 2
-        .left(8).up(4)
-        .box(fg, 1, 9, 1)
-        .left().up()
-        .box(fg, 1, 9, 1)
-        .left().up()
-        .box(fg, 1, 8, 1)
-        .left(2).up()
-        .box(fg, 2, 8, 1)
-        .left(2).up()
-        .box(fg, 2, 7, 1)
-        .left(2).up()
-        .box(fg, 2, 7, 1)
-        .left()
-        .box(fg, 1, 8, 1)
-        .left().up()
-        .box(fg, 1, 8, 1)
-        .left()
-        .box(fg, 1, 9, 1)
-        .left(2).up()
-        .box(fg, 2, 19, 1)
-        .left().up()
-        .box(fg, 1, 17, 1)
-        .left()
-        .box(fg, 1, 16, 1)
-        .left().up()
-        .box(fg, 1, 14, 1)
-        .left().up(2)
-        .box(fg, 1, 10, 1)
-        .left().up(2)
-        .box(fg, 1, 6, 1)
-        // stroke 3
-        .right(7).up(6)
-        .box(fg, 1, 8, 1)
-        .right().up()
-        .box(fg, 1, 7, 1)
-        .right().up()
-        .box(fg, 2, 7, 1)
-        .right(2).up()
-        .box(fg, 4, 6, 1)
-        .right(4).down()
-        .box(fg, 2, 7, 1)
-        .right().down()
-        .box(fg, 1, 8, 1)
-        .right()
-        .box(fg, 1, 7, 1)
-        .right().down()
-        .box(fg, 1, 8, 1)
-        .right().down()
-        .box(fg, 1, 9, 1)
-        .right().down()
-        .box(fg, 1, 9, 1)
-        .right().up()
-        .box(fg, 1, 8, 1)
-        .right().up()
-        .box(fg, 1, 6, 1)
-        .right().up()
-        .box(fg, 1, 5, 1)
-        .right().up()
-        .box(fg, 1, 3, 1)
-        .right().up()
-        .box(fg);
-
-    this.move('logojs-start');
-
-    return this;
-});
-//
-// Makes a cube of JS logos!
-// This is a wrapper for logojs() so look at its docs
-//
-// Until the drone can rotate on its Z axis we can't
-// use logojs() to create top/bottom sides of cube.
-//
-Drone.extend('logojscube', function(fg, bg) {
-
-    this.chkpt('jscube-start')
-        .logojs(fg, bg);
-
-    this.move('jscube-start')
-        .right(100)
-        .turn(3)
-        .logojs(fg, bg);
-
-    this.move('jscube-start')
-        .right(100)
-        .turn(3)
-        .right(100)
-        .turn(3)
-        .logojs(fg, bg);
-
-    this.move('jscube-start')
-        .right(100)
-        .turn(3)
-        .right(100)
-        .turn(3)
-        .right(100)
-        .turn(3)
-        .logojs(fg, bg);
-
-    return this;
-});
diff --git a/src/main/javascript/drone/contrib/partial.js b/src/main/javascript/drone/contrib/partial.js
deleted file mode 100644
index 8adbeac..0000000
--- a/src/main/javascript/drone/contrib/partial.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
-* Create a partial function
-*
-* Parameters:
-*	func - base function
-*	[remaining arguments] - arguments bound to the partial function
-*/
-function partial(func /*, 0..n args */) {
-	var args = Array.prototype.slice.call(arguments, 1);
-	return function() {
-		var allArguments = args.concat(Array.prototype.slice.call(arguments));
-		return func.apply(this, allArguments);
-	};
-}
diff --git a/src/main/javascript/drone/contrib/rainbow.js b/src/main/javascript/drone/contrib/rainbow.js
deleted file mode 100644
index a9da6e4..0000000
--- a/src/main/javascript/drone/contrib/rainbow.js
+++ /dev/null
@@ -1,41 +0,0 @@
-/************************************************************************
-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.extend('rainbow', function(radius){
-    if (typeof radius == "undefined")
-        radius = 18;
-    
-    this.chkpt('rainbow');
-    this.down(radius);
-    // copy blocks.rainbow and add air at end (to compensate for strokewidth)
-    var colors = blocks.rainbow.slice(0);
-    colors.push(blocks.air);
-    for (var i = 0;i < colors.length; i++) {
-        var bm = this._getBlockIdAndMeta(colors[i]);
-        this.arc({
-            blockType: bm[0],
-            meta: bm[1],
-            radius: radius-i,
-            strokeWidth: 2,
-            quadrants: {topright: true,
-                        topleft: true},
-            orientation: 'vertical'}).right().up();
-    }
-    return this.move('rainbow');
-});
diff --git a/src/main/javascript/drone/contrib/rboxcall.js b/src/main/javascript/drone/contrib/rboxcall.js
deleted file mode 100644
index 15b05e0..0000000
--- a/src/main/javascript/drone/contrib/rboxcall.js
+++ /dev/null
@@ -1,32 +0,0 @@
-/**
-* Iterates over each cube in a cubic region. For each cube has a chance to callback your 
-* function and provide a new drone to it.
-*
-* Parameters:
-*  callback - any function that accepts a drone as its first argument
-*  probability - chance to invoke your callback on each iteration
-*  width - width of the region
-*  height - (Optional) height of the region, defaults to width
-*  depth - (Optional) depth of the cube, defaults to width
-*/
-
-Drone.extend("rboxcall", function(callback, probability, width, height, depth) {
-   this.chkpt('rboxcall-start');
-
-   for(var i = 0; i < width; ++i) {
-      this.move('rboxcall-start').right(i);
-      for(var j = 0; j < depth; ++j) {
-         this.move('rboxcall-start').right(i).fwd(j);
-         for(var k = 0; k < height; ++k) {
-            if(Math.random()*100 < probability) {
-               callback.call(null, new Drone(this.x, this.y, this.z));
-            }
-            this.up();
-         }
-      }
-   }
-
-   this.move('rboxcall-start');
-
-   return this;
-});
diff --git a/src/main/javascript/drone/contrib/redstonewire.js b/src/main/javascript/drone/contrib/redstonewire.js
deleted file mode 100644
index fc36992..0000000
--- a/src/main/javascript/drone/contrib/redstonewire.js
+++ /dev/null
@@ -1,105 +0,0 @@
-//
-// usage: 
-// [1] to place a new block with redstone wire on it (block on bottom, redstone on top)
-// /js wireblock(blocks.sandstone);
-// 
-// [2] to drop wire on to an existing block
-// /js wire()
-//
-// [3] to place a (redstone) torch on a new block
-// /js torchblock(blocks.sandstone)
-//
-// [4] to place a repeater on a new block
-// /js repeaterblock(blocks.sandstone)
-//
-// [5] To create a long redstone wire (with necessary repeaters, powererd by a single torch)
-// /js wirestraight(blocks.sandstone, distance)
-//
-// [6] To create a 'road' with redstone torches and wire lining each side
-// /js redstoneroad(blocks.stone, blocks.sandstone, 25)
-
-Drone.extend('wireblock',function(blockType) 
-{
-    this.chkpt('wireblock')
-        .box(blockType,1,2,1)  // 2 blocks tall, top block will be wire dropped on lower
-        .up();
-
-    this.world.getBlockAt(this.x,this.y,this.z).setTypeId(55); //apply wire
-
-    return this.move('wireblock');
-});
-
-Drone.extend('wire',function ()
-{
-    this.chkpt('wire')
-        .up();
-
-    this.world.getBlockAt(this.x,this.y,this.z).setTypeId(55);  // apply wire
-
-    return this.move('wire');
-});
-
-Drone.extend('torchblock', function(blockType)
-{
-    this.box(blockType,1,2,1)  // 2 blocks tall
-        .up();
-
-    this.world.getBlockAt(this.x,this.y,this.z).setTypeId(76);  // apply torch
-
-    return this.down();    
-});
-
-Drone.extend('repeaterblock',function(blockType) 
-{
-    this.chkpt('repeaterblock')
-        .box(blockType,1,2,1) 
-        .up();
-
-    var block = this.world.getBlockAt(this.x,this.y,this.z);
-    block.setTypeId(94);        // apply repeater
-
-    // redstone repeater dirs: north=0,east=1,south=2,west=3
-    var direction = [1,2,3,0][this.dir];    // convert drone dir to repeater dir.
-    block.setData(direction);   
-
-    return this.move('repeaterblock');
-});
-
-
-Drone.extend('wirestraight',function (blockType,distance)
-{
-    this.chkpt('wirestraight');
-
-    this.torchblock(blockType);
-    this.fwd();
-
-    for (var i = 1; i < distance; i++) {
-        if(i % 14 == 0)
-        {
-            this.repeaterblock(blockType);
-        }
-        else
-        {
-            this.wireblock(blockType);
-        }
-
-        this.fwd();
-    };
-
-    return this.move('wirestraight');
-});
-
-
-Drone.extend('redstoneroad', function (roadBlockType, redstoneunderBlockType, distance)
-{
-    return  this.down()
-                .wirestraight(redstoneunderBlockType, distance)
-                .right()
-                .box(roadBlockType, 4,1,distance)
-                .right(4)
-                .wirestraight(redstoneunderBlockType, distance)
-                .up();
-});
-
-
-
diff --git a/src/main/javascript/drone/contrib/skyscraper-example.js b/src/main/javascript/drone/contrib/skyscraper-example.js
deleted file mode 100644
index 87c25d1..0000000
--- a/src/main/javascript/drone/contrib/skyscraper-example.js
+++ /dev/null
@@ -1,15 +0,0 @@
-Drone.extend('skyscraper',function(floors){
-
-    if (typeof floors == "undefined")
-        floors = 10; 
-    this.chkpt('skyscraper');
-    for (var i = 0;i < floors; i++)
-    {
-        this
-            .box(blocks.iron,20,1,20)
-            .up()
-            .box0(blocks.glass_pane,20,3,20)
-            .up(3);
-    }
-    return this.move('skyscraper');
-});
diff --git a/src/main/javascript/drone/contrib/spiral_stairs.js b/src/main/javascript/drone/contrib/spiral_stairs.js
deleted file mode 100644
index c41bda6..0000000
--- a/src/main/javascript/drone/contrib/spiral_stairs.js
+++ /dev/null
@@ -1,44 +0,0 @@
-/************************************************************************
-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);
-
-***/
-Drone.extend("spiral_stairs",function(stairBlock, flights){
-    this.chkpt('spiral_stairs');
-    
-    for (var i = 0; i < flights; i++){
-        this
-            .box(blocks.stairs[stairBlock] + ':' + Drone.PLAYER_STAIRS_FACING[this.dir])
-            .up().fwd()
-            .box(blocks.stairs[stairBlock] + ':' + Drone.PLAYER_STAIRS_FACING[this.dir])
-            .up().fwd()
-            .box(blocks.slab[stairBlock])
-            .turn().fwd();
-    }
-    return this.move('spiral_stairs');
-});
diff --git a/src/main/javascript/drone/contrib/streamer.js b/src/main/javascript/drone/contrib/streamer.js
deleted file mode 100644
index ffc3a53..0000000
--- a/src/main/javascript/drone/contrib/streamer.js
+++ /dev/null
@@ -1,19 +0,0 @@
-/**
-* Creates a stream of blocks in a given direction until it hits something other than air
-* 
-* Parameters:
-*  block - blockId
-*  dir - "up", "down", "left", "right", "fwd", "back
-*  maxIterations - (Optional) maximum number of cubes to generate, defaults to 1000
-*/
-Drone.extend("streamer", function(block, dir, maxIterations) {
-   for(var i = 0; i < maxIterations||1000; ++i) {
-      this.box(block);
-      this[dir].call(this);
-      if(getBlock(this.x, this.y, this.z) !== "0:0") {
-         break;
-      }
-   }
-   
-   return this;
-});
diff --git a/src/main/javascript/drone/contrib/temple.js b/src/main/javascript/drone/contrib/temple.js
deleted file mode 100644
index 90ba27e..0000000
--- a/src/main/javascript/drone/contrib/temple.js
+++ /dev/null
@@ -1,23 +0,0 @@
-//
-// constructs a mayan temple
-// 
-Drone.extend('temple', function(side) {
-  if (!side) {
-    side = 20;
-  }
-  var stone = '98:1';
-  var stair = '109:' + Drone.PLAYER_STAIRS_FACING[this.dir];
-
-  this.chkpt('temple');
-
-  while (side > 4) {
-    var middle = Math.round((side-2)/2);
-    this.chkpt('corner')
-      .box(stone, side, 1, side)
-      .right(middle).box(stair).right().box(stair)
-      .move('corner').up().fwd().right();
-    side = side - 2;
-  }
-
-  return this.move('temple');
-});
diff --git a/src/main/javascript/drone/drone.js b/src/main/javascript/drone/drone.js
deleted file mode 100644
index 2d4ccee..0000000
--- a/src/main/javascript/drone/drone.js
+++ /dev/null
@@ -1,1810 +0,0 @@
-var global = this;
-load(__folder + "../core/_primitives.js",true);
-
-/*********************************************************************
-Drone Module
-============
-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); 
-
-TLDNR; (Just read this if you're impatient)
-===========================================
-At the in-game command prompt type...
-     
-    /js box( blocks.oak )  
-    
-... creates a single wooden block at the cross-hairs or player location
-    
-    /js box( blocks.oak ).right(2).box( blocks.wool.black, 4, 9, 1)
-    
-... creates a single wooden block and a 2001 black obelisk that is 4
-wide x 9 tall x 1 long in size.  If you want to see what else
-ScriptCraft's Drone can do, read on...
-
-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` (self) 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.on('block.BlockBreakEvent',function(listener,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.
-  
-***/
-var Drone = function(/* number */ x, /* number */ y, /* number */ z, /* number */ direction){};
-/************************************************************************
-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.prototype.box = function(block,width,height,depth){};
-Drone.prototype.box0 = function(block,width,height,length){};
-Drone.prototype.boxa = function(/* [string] */ width, height, length){};
-
-/************************************************************************
-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.prototype.up = function(numBlocks){};
-Drone.prototype.down = function(numBlocks){};
-Drone.prototype.left = function(numBlocks){};
-Drone.prototype.right = function(numBlocks){};
-Drone.prototype.fwd = function(numBlocks){};
-Drone.prototype.back = function(numBlocks){};
-Drone.prototype.turn = function(numTurns){};
-
-/************************************************************************
-Drone Positional Info
-=====================
-
- * getLocation() - Returns a Bukkit Location object for the drone
-
-***/
-Drone.prototype.getLocation = function(){};
-
-/************************************************************************
-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.prototype.chkpt = function(checkpoint_name){};
-Drone.prototype.move = function(checkpoint_name){};
-
-/************************************************************************
-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.prototype.prism = function(block,width,depth){};
-Drone.prototype.prism0 = function(block,width,depth){};
-/************************************************************************
-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.prototype.cylinder = function(block,radius,height){};
-Drone.prototype.cylinder0 = function(block,radius,height){};
-/************************************************************************
-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.prototype.arc = function(params) {};
-
-/************************************************************************
-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.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.prototype.door = function(b){};
-Drone.prototype.door2 = function(b){};
-/************************************************************************
-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.prototype.sign = function(s,b){};
-/************************************************************************
-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.prototype.oak= function(){};
-Drone.prototype.spruce = function(){};
-Drone.prototype.birch = function(){};
-Drone.prototype.jungle = function(){};
-/************************************************************************
-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.prototype.garden = function(w,d){};
-/************************************************************************
-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, 
-
-    rand({blocks.brick.stone: 5, blocks.brick.mossy: 3, blocks.brick.cracked: 2},w,d,h) 
-
-regular stone has a 50% chance, mossy stone has a 30% chance and cracked stone has just a 20% chance of being picked.
-
-***/
-Drone.prototype.rand = function(distribution,w,h,d){};
-/************************************************************************
-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');
-
-***/
-Drone.prototype.copy = function(name,w,h,d){};
-Drone.prototype.paste = function(name){};
-/************************************************************************
-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/blue-prints 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.
-
-Example
--------
-
-    // 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');      
-    });
-
-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]);
-
-***/
-
-//
-// Implementation
-// ==============
-// 
-// There is no need to read any further unless you want to understand how the Drone object works.
-//
-(function(){
-    Drone = function(x,y,z,dir,world)
-    {
-        this.record = false;
-        var usePlayerCoords = false;
-        var playerPos = getPlayerPos();
-        if (typeof x == "undefined")
-        {
-            var mp = getMousePos();
-            if (mp){
-                this.x = mp.x;
-                this.y = mp.y;
-                this.z = mp.z;
-                if (playerPos)
-                    this.dir = _getDirFromRotation(playerPos.yaw);
-                this.world = mp.world;
-            }else{
-                // base it on the player's current location
-                usePlayerCoords = true;
-                //
-                // it's possible that drone.js could be loaded by a non-playing op 
-                // (from the server console)
-                //
-                if (!playerPos){
-                    return null;
-                }
-                this.x = playerPos.x;
-                this.y = playerPos.y;
-                this.z = playerPos.z;
-                this.dir = _getDirFromRotation(playerPos.yaw);
-                this.world = playerPos.world;
-            }
-        }else{
-            if (arguments[0] instanceof org.bukkit.Location){
-                this.x = arguments[0].x;
-                this.y = arguments[0].y;
-                this.z = arguments[0].z;
-                this.dir = _getDirFromRotation(arguments[0].yaw);
-                this.world = arguments[0].world;
-            }else{
-                this.x = x;
-                this.y = y;
-                this.z = z;
-                if (typeof dir == "undefined"){
-                    this.dir = _getDirFromRotation(playerPos.yaw);
-                }else{
-                    this.dir = dir%4;
-                }
-                if (typeof world == "undefined"){
-                    this.world = _getWorld();
-                }else{
-                    this.world = world;
-                }
-            }
-        }
-
-        if (usePlayerCoords){
-            this.fwd(3);
-        }
-        this.chkpt('start');
-        this.record = true;
-        this.history = [];
-        // for debugging
-        // self.sendMessage("New Drone " + this.toString());
-        return this;
-    };
-    //
-    // add custom methods to the Drone object using this function
-    //
-    Drone.extend = function(name, func)
-    {
-       // Drone.prototype[name] = func;
-        Drone.prototype['_' + name] = func;
-        Drone.prototype[name] = function(){
-            if (this.record)
-                this.history.push([name,arguments]);
-            var oldVal = this.record;
-            this.record = false;
-            this['_' + name].apply(this,arguments);
-            this.record = oldVal;
-            return this;
-        };
-        
-        global[name] = function(){
-            var result = new Drone();
-            result[name].apply(result,arguments);
-            return result;
-        };
-    };
-
-/**************************************************************************
-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.prototype.times = function(numTimes,commands)
-    {
-        if (typeof numTimes == "undefined")
-            numTimes = 2;
-        if (typeof commands == "undefined")
-            commands = this.history.concat();
-        
-        this.history = [['times',[numTimes+1,commands]]];
-        var oldVal = this.record;
-        this.record = false;
-        for (var j = 1; j < numTimes; j++)
-        {
-            for (var i = 0;i < commands.length; i++){
-                var command = commands[i];
-                var methodName = command[0];
-                var args = command[1];
-                print ("command=" + JSON.stringify(command) + ",methodName=" + methodName);
-                this[methodName].apply(this,args);
-            }
-        }
-        this.record = oldVal;
-        return this;
-    };
-    
-    Drone.prototype._checkpoints = {};
-
-    Drone.extend('chkpt',function(name){
-        this._checkpoints[name] = {x:this.x,y:this.y,z:this.z,dir:this.dir};
-    });
-                 
-    Drone.extend('move', function() {
-        if (arguments[0] instanceof org.bukkit.Location){
-            this.x = arguments[0].x;
-            this.y = arguments[0].y;
-            this.z = arguments[0].z;
-            this.dir = _getDirFromRotation(arguments[0].yaw);
-            this.world = arguments[0].world;
-        }else if (typeof arguments[0] === "string"){
-            var coords = this._checkpoints[arguments[0]];
-            if (coords){
-                this.x = coords.x;
-                this.y = coords.y;
-                this.z = coords.z;
-                this.dir = coords.dir%4;
-            }            
-        }else{
-            // expect x,y,z,dir
-            switch(arguments.length){
-            case 4:
-                this.dir = arguments[3];
-            case 3:
-                this.z = arguments[2];
-            case 2:
-                this.y = arguments[1];
-            case 1:n
-                this.x = arguments[0];
-            }
-        }
-    });
-
-    Drone.extend('turn',function(n){
-        if (typeof n == "undefined")
-            n = 1;
-        this.dir += n;
-        this.dir %=4;
-    });
-    Drone.extend('right',function(n){ 
-        if (typeof n == "undefined")
-            n = 1;
-        _movements[this.dir].right(this,n); 
-    });
-    Drone.extend('left',function(n){ 
-        if (typeof n == "undefined")
-            n = 1;
-        _movements[this.dir].left(this,n);
-    });
-    Drone.extend('fwd',function(n){ 
-        if (typeof n == "undefined")
-            n = 1;
-        _movements[this.dir].fwd(this,n);
-    });
-    Drone.extend('back',function(n){ 
-        if (typeof n == "undefined")
-            n = 1;
-        _movements[this.dir].back(this,n);
-    });
-    Drone.extend('up',function(n){ 
-        if (typeof n == "undefined")
-            n = 1;
-        this.y+= n; 
-    });
-    Drone.extend('down',function(n){ 
-        if (typeof n == "undefined")
-            n = 1;
-        this.y-= n; 
-    });
-    //
-    // position
-    //
-    Drone.prototype.getLocation = function() {
-        return new org.bukkit.Location(this.world, this.x, this.y, this.z);
-    };
-    //
-    // building
-    //
-    Drone.extend('sign',function(message,block){
-        if (message.constructor == Array){
-        }else{
-            message = [message];
-        }
-        var bm = this._getBlockIdAndMeta(block);
-        block = bm[0];
-        var meta = bm[1];
-        if (block != 63 && block != 68){
-            print("ERROR: Invalid block id for use in signs");
-            return;
-        }
-        if (block == 68){
-            meta = Drone.PLAYER_SIGN_FACING[this.dir%4];
-            this.back();
-        }
-        if (block == 63){
-            meta = (12 + ((this.dir+2)*4)) % 16;
-        }
-        putSign(message,this.x,this.y,this.z,block,meta);
-        if (block == 68){
-            this.fwd();
-        }
-    });
-    Drone.prototype.cuboida = function(/* Array */ blocks,w,h,d){
-        var properBlocks = [];
-        var len = blocks.length;
-        for (var i = 0;i < len;i++){
-            var bm = this._getBlockIdAndMeta(blocks[i]);
-            properBlocks.push([bm[0],bm[1]]);
-        }
-        if (typeof h == "undefined")
-            h = 1;
-        if (typeof d == "undefined")
-            d = 1;
-        if (typeof w == "undefined")
-            w = 1;
-        var that = this;
-        var dir = this.dir;
-        var pl = org.bukkit.entity.Player;
-        var cs = org.bukkit.command.BlockCommandSender;
-        var bi = 0;
-        /*
-          
-         */
-        _traverse[dir].depth(that,d,function(){
-            _traverseHeight(that,h,function(){
-                _traverse[dir].width(that,w,function(){
-                    var block = that.world.getBlockAt(that.x,that.y,that.z);
-                    var properBlock = properBlocks[bi%len];
-                    block.setTypeIdAndData(properBlock[0],properBlock[1],false);
-                    bi++;
-                });
-            });
-        });
-        return this;
-        
-    };
-    /*
-      faster cuboid because blockid, meta and world must be provided 
-      use this method when you need to repeatedly place blocks
-     */
-    Drone.prototype.cuboidX = function(blockType, meta, w, h, d){
-
-        if (typeof h == "undefined")
-            h = 1;
-        if (typeof d == "undefined")
-            d = 1;
-        if (typeof w == "undefined")
-            w = 1;
-        var that = this;
-        var dir = this.dir;
-
-        var depthFunc = function(){
-            var block = that.world.getBlockAt(that.x,that.y,that.z);
-            block.setTypeIdAndData(blockType,meta,false);
-            // wph 20130210 - dont' know if this is a bug in bukkit but for chests, 
-            // the metadata is ignored (defaults to 2 - south facing)
-            // only way to change data is to set it using property/bean.
-            block.data = meta;
-        };
-        var heightFunc = function(){
-            _traverse[dir].depth(that,d,depthFunc);
-        };
-        var widthFunc = function(){
-            _traverseHeight(that,h,heightFunc);
-        };
-
-        _traverse[dir].width(that,w,widthFunc);
-        return this;
-        
-    };
-    
-    Drone.prototype.cuboid = function(block,w,h,d){
-        var bm = this._getBlockIdAndMeta(block);
-        return this.cuboidX(bm[0],bm[1], w,h,d);
-    };
-    Drone.prototype.cuboid0 = function(block,w,h,d){
-        this.chkpt('start_point');
-        
-        // Front wall
-        this.cuboid(block, w, h, 1);
-        // Left wall
-        this.cuboid(block, 1, h, d);
-        // Right wall
-        this.right(w-1).cuboid(block, 1, h, d).left(w-1);
-        // Back wall
-        this.fwd(d-1).cuboid(block, w, h, 1);
-        
-        return this.move('start_point');
-    };
-    Drone.extend('door',function(door){
-        if (typeof door == "undefined"){
-            door = 64;
-        }else{
-            door = 71;
-        }
-        this.cuboid(door+':' + this.dir).up().cuboid(door+':8').down();
-    });
-    Drone.extend('door2',function(door){
-        if (typeof door == "undefined"){
-            door = 64;
-        }else{
-            door = 71;
-        }
-        this
-            .box(door+':' + this.dir).up()
-            .box(door+':8').right()
-            .box(door+':9').down()
-            .box(door+':' + this.dir).left();
-    });
-    // player dirs: 0 = east, 1 = south, 2 = west,   3 = north
-    // block dirs:  0 = east, 1 = west,  2 = south , 3 = north
-    // sign dirs:   5 = east, 3 = south, 4 = west, 2 = north
-    Drone.PLAYER_STAIRS_FACING = [0,2,1,3];
-    // for blocks 68 (wall signs) 65 (ladders) 61,62 (furnaces) 23 (dispenser) and 54 (chest)
-    Drone.PLAYER_SIGN_FACING = [4,2,5,3]; 
-    Drone.PLAYER_TORCH_FACING = [2,4,1,3];
-
-    var _getWorld = function(){
-        var pl = org.bukkit.entity.Player;
-        var cs = org.bukkit.command.BlockCommandSender;
-        var world = (self instanceof pl)?self.location.world:(self instanceof cs)?self.block.location.world:null;
-        return world;
-    };
-    
-    var _STAIRBLOCKS = {53: '5:0'     // oak wood
-                         ,67: 4    // cobblestone
-                         ,108: 45  // brick
-                         ,109: 98  // stone brick
-                         ,114: 112 // nether brick
-                         ,128: 24  // sandstone
-                         ,134: '5:1'    // spruce wood
-                         ,135: '5:2'    // birch wood
-                         ,136: '5:3'    // jungle wood
-                        };
-    //
-    // prism private implementation
-    //
-    var _prism = function(block,w,d)
-    {
-        var stairEquiv = _STAIRBLOCKS[block];
-        if (stairEquiv){
-            this.fwd().prism(stairEquiv,w,d-2).back();
-            var d2 = 0;
-            var middle = Math.floor(d/2);
-            var uc = 0,dc = 0;
-            while (d2 < d)
-            {
-                var di = (d2 < middle?this.dir:(this.dir+2)%4);
-                var bd = block + ':' + Drone.PLAYER_STAIRS_FACING[di];
-                var putStep = true;
-                if (d2 == middle){
-                    if (d % 2 == 1){
-                        putStep = false;
-                    }
-                }
-                if (putStep)
-                    this.cuboid(bd,w);
-                if (d2 < middle-1){
-                    this.up();
-                    uc++;
-                }
-                var modulo = d % 2;
-                if (modulo == 1){
-                    if (d2 > middle && d2<d-1){
-                        this.down();
-                        dc++;
-                    }
-                }else{
-                    if (d2 >= middle && d2<d-1){
-                        this.down();
-                        dc++;
-                    }
-                }
-                this.fwd();
-                d2++;
-            }
-            this.back(d);
-        }else{
-            var c = 0;
-            var d2 = d;
-            while(d2 >= 1){
-                this.cuboid(block,w,1,d2);
-                d2 -= 2;
-                this.fwd().up();
-                c++;
-            }
-            this.down(c).back(c);
-        }
-        return this;
-    };
-    //
-    // prism0 private implementation
-    //
-    var _prism0 = function(block,w,d){
-        this.prism(block,w,d)
-            .fwd().right()
-            .prism(0,w-2,d-2)
-            .left().back();
-        var se = _STAIRBLOCKS[block];
-        if (d % 2 == 1 && se){
-            // top of roof will be open - need repair
-            var f = Math.floor(d/2);
-            this.fwd(f).up(f).cuboid(se,w).down(f).back(f);
-        }
-    };
-    Drone.extend('prism0',_prism0);
-    Drone.extend('prism',_prism);
-    Drone.extend('box',Drone.prototype.cuboid);
-    Drone.extend('box0',Drone.prototype.cuboid0);
-    Drone.extend('boxa',Drone.prototype.cuboida);
-    //
-    // show the Drone's position and direction 
-    //
-    Drone.prototype.toString = function(){
-        var dirs = ["east","south","west","north"];
-        return "x: " + this.x + " y: "+this.y + " z: " + this.z + " dir: " + this.dir  + " "+dirs[this.dir];
-    };
-    Drone.prototype.debug = function(){
-        print(this.toString());
-        return this;
-    };
-    /*
-      do the bresenham thing
-     */
-    var _bresenham = function(x0,y0,radius, setPixel, quadrants){
-        //
-        // credit: Following code is copied almost verbatim from
-        // http://en.wikipedia.org/wiki/Midpoint_circle_algorithm
-        // Bresenham's circle algorithm
-        //
-        var f = 1 - radius;
-        var ddF_x = 1;
-        var ddF_y = -2 * radius;
-        var x = 0;
-        var y = radius;
-        var defaultQuadrants = {topleft: true, topright: true, bottomleft: true, bottomright: true};
-        quadrants = quadrants?quadrants:defaultQuadrants;
-        /*
-            II  | I
-          ------------
-            III | IV
-         */
-        if (quadrants.topleft || quadrants.topright)
-            setPixel(x0, y0 + radius); // quadrant I/II topmost
-        if (quadrants.bottomleft || quadrants.bottomright)
-            setPixel(x0, y0 - radius); // quadrant III/IV bottommost
-        if (quadrants.topright || quadrants.bottomright)
-            setPixel(x0 + radius, y0); // quadrant I/IV rightmost
-        if (quadrants.topleft || quadrants.bottomleft)
-            setPixel(x0 - radius, y0); // quadrant II/III leftmost
-        
-        while(x < y)
-        {
-            // ddF_x == 2 * x + 1;
-            // ddF_y == -2 * y;
-            // f == x*x + y*y - radius*radius + 2*x - y + 1;
-            if(f >= 0) 
-            {
-                y--;
-                ddF_y += 2;
-                f += ddF_y;
-            }
-            x++;
-            ddF_x += 2;
-            f += ddF_x;    
-            if (quadrants.topright){
-                setPixel(x0 + x, y0 + y); // quadrant I
-                setPixel(x0 + y, y0 + x); // quadrant I
-            }
-            if (quadrants.topleft){
-                setPixel(x0 - x, y0 + y); // quadrant II
-                setPixel(x0 - y, y0 + x); // quadrant II
-            }
-            if (quadrants.bottomleft){
-                setPixel(x0 - x, y0 - y); // quadrant III
-                setPixel(x0 - y, y0 - x); // quadrant III
-            }
-            if (quadrants.bottomright){
-                setPixel(x0 + x, y0 - y); // quadrant IV
-                setPixel(x0 + y, y0 - x); // quadrant IV
-            }
-        }
-    };
-    var _getStrokeDir = function(x,y){
-        var absY = Math.abs(y);
-        var absX = Math.abs(x);
-        var strokeDir = 0;
-        if (y > 0 && absY >= absX)
-            strokeDir = 0 ; //down
-        else if (y < 0 && absY >= absX)
-            strokeDir = 1 ; // up
-        else if (x > 0 && absX >= absY)
-            strokeDir = 2 ; // left
-        else if (x < 0 && absX >= absY)
-            strokeDir = 3 ; // right
-        return strokeDir;
-    };
-    /*
-      The daddy of all arc-related API calls - 
-      if you're drawing anything that bends it ends up here.
-    */
-    var _arc2 = function( params ) {
-
-        var drone = params.drone;
-        var orientation = params.orientation?params.orientation:"horizontal";
-        var quadrants = params.quadrants?params.quadrants:{
-            topright:1,
-            topleft:2,
-            bottomleft:3,
-            bottomright:4
-        };
-        var stack = params.stack?params.stack:1;
-        var radius = params.radius;
-        var strokeWidth = params.strokeWidth?params.strokeWidth:1;
-        drone.chkpt('arc2');
-        var x0, y0, gotoxy,setPixel;
-        
-        if (orientation == "horizontal"){
-            gotoxy = function(x,y){ return drone.right(x).fwd(y);};
-            drone.right(radius).fwd(radius).chkpt('center');
-            switch (drone.dir) {
-            case 0: // east
-            case 2: // west
-                x0 = drone.z;
-                y0 = drone.x;
-                break;
-            case 1: // south
-            case 3: // north
-                x0 = drone.x;
-                y0 = drone.z;
-            }
-            setPixel = function(x,y) {
-                x = (x-x0);
-                y = (y-y0);
-                if (params.fill){
-                    // wph 20130114 more efficient esp. for large cylinders/spheres
-                    if (y < 0){
-                        drone
-                            .fwd(y).right(x)
-                            .cuboidX(params.blockType,params.meta,1,stack,Math.abs(y*2)+1)
-                            .back(y).left(x);
-                    }
-                }else{
-                    if (strokeWidth == 1){
-                        gotoxy(x,y)
-                        .cuboidX(params.blockType,
-                                 params.meta,
-                                 1, // width
-                                 stack, // height
-                                 strokeWidth // depth
-                                )
-                        .move('center');
-                    } else {
-                        var strokeDir = _getStrokeDir(x,y);
-                        var width = 1, depth = 1;
-                        switch (strokeDir){
-                        case 0: // down
-                            y = y-(strokeWidth-1);
-                            depth = strokeWidth;
-                            break;
-                        case 1: // up
-                            depth = strokeWidth;
-                            break;
-                        case 2: // left
-                            width = strokeWidth;
-                            x = x-(strokeWidth-1);
-                            break;
-                        case 3: // right
-                            width = strokeWidth;
-                            break;
-                        }
-                        gotoxy(x,y)
-                            .cuboidX(params.blockType, params.meta, width, stack, depth)
-                            .move('center');
-
-                    }
-                }
-            };
-        }else{
-            // vertical
-            gotoxy = function(x,y){ return drone.right(x).up(y);};
-            drone.right(radius).up(radius).chkpt('center'); 
-            switch (drone.dir) {
-            case 0: // east
-            case 2: // west
-                x0 = drone.z;
-                y0 = drone.y;
-                break;
-            case 1: // south
-            case 3: // north
-                x0 = drone.x;
-                y0 = drone.y;
-            }
-            setPixel = function(x,y) {
-                x = (x-x0);
-                y = (y-y0);
-                if (params.fill){
-                    // wph 20130114 more efficient esp. for large cylinders/spheres
-                    if (y < 0){
-                        drone
-                            .up(y).right(x)
-                            .cuboidX(params.blockType,params.meta,1,Math.abs(y*2)+1,stack)
-                            .down(y).left(x);
-                    }
-                }else{
-                    if (strokeWidth == 1){
-                        gotoxy(x,y)
-                            .cuboidX(params.blockType,params.meta,strokeWidth,1,stack)
-                            .move('center');
-                    }else{
-                        var strokeDir = _getStrokeDir(x,y);
-                        var width = 1, height = 1;
-                        switch (strokeDir){
-                        case 0: // down
-                            y = y-(strokeWidth-1);
-                            height = strokeWidth;
-                            break;
-                        case 1: // up
-                            height = strokeWidth;
-                            break;
-                        case 2: // left
-                            width = strokeWidth;
-                            x = x-(strokeWidth-1);
-                            break;
-                        case 3: // right
-                            width = strokeWidth;
-                            break;
-                        }
-                        gotoxy(x,y)
-                            .cuboidX(params.blockType, params.meta, width, height, stack)
-                            .move('center');
-                        
-                    }
-                }
-            };
-        }
-        /*
-          setPixel assumes a 2D plane - need to put a block along appropriate plane
-         */
-        _bresenham(x0,y0,radius,setPixel,quadrants);
-        
-        params.drone.move('arc2');
-    };
-
-
-    Drone.extend('arc',function(params) {
-        params.drone = this;
-        _arc2(params);
-    });
-    // ========================================================================
-    // Private variables and functions
-    // ========================================================================
-    var _cylinder0 = function(block,radius,height,exactParams){
-        var arcParams = {
-            radius: radius,
-            fill: false,
-            orientation: 'horizontal',
-            stack: height,
-        };
-
-        if (exactParams){
-            arcParams.blockType = exactParams.blockType;
-            arcParams.meta = exactParams.meta;
-        }else{
-            var md = this._getBlockIdAndMeta(block);
-            arcParams.blockType = md[0];
-            arcParams.meta = md[1];
-        }
-        return this.arc(arcParams);
-    };
-    var _cylinder1 = function(block,radius,height,exactParams){
-        var arcParams = {
-            radius: radius,
-            fill: true,
-            orientation: 'horizontal',
-            stack: height,
-        };
-
-        if (exactParams){
-            arcParams.blockType = exactParams.blockType;
-            arcParams.meta = exactParams.meta;
-        }else{
-            var md = this._getBlockIdAndMeta(block);
-            arcParams.blockType = md[0];
-            arcParams.meta = md[1];
-        }
-        return this.arc(arcParams);
-    };
-    var _getDirFromRotation = function(r){
-        // 0 = east, 1 = south, 2 = west, 3 = north
-        // 46 to 135 = west
-        // 136 to 225 = north
-        // 226 to 315 = east
-        // 316 to 45 = south
-
-        r = (r + 360) % 360; // east could be 270 or -90
-
-        if (r > 45 && r <= 135)
-            return 2; // west
-        if (r > 135 && r <= 225)
-            return 3; // north
-        if (r > 225 && r <= 315)
-            return 0; // east
-        if (r > 315 || r < 45)
-            return 1; // south
-    };
-    var _getBlockIdAndMeta = function(b){
-        var defaultMeta = 0;
-        if (typeof b == 'string'){
-            var bs = b;
-            var sp = bs.indexOf(':');
-            if (sp == -1){
-                b = parseInt(bs);
-                // wph 20130414 - use sensible defaults for certain blocks e.g. stairs
-                // should face the drone.
-                for (var i in blocks.stairs){
-                    if (blocks.stairs[i] === b){
-                        defaultMeta = Drone.PLAYER_STAIRS_FACING[this.dir];
-                        break;
-                    }
-                }
-                return [b,defaultMeta];
-            }
-            b = parseInt(bs.substring(0,sp));
-            var md = parseInt(bs.substring(sp+1,bs.length));
-            return [b,md];
-        }else{
-            // wph 20130414 - use sensible defaults for certain blocks e.g. stairs
-            // should face the drone.
-            for (var i in blocks.stairs){
-                if (blocks.stairs[i] === b){
-                    defaultMeta = Drone.PLAYER_STAIRS_FACING[this.dir];
-                    break;
-                }
-            }
-            return [b,defaultMeta];
-        }
-    };
-    //
-    // movement
-    //
-    var _movements = [{},{},{},{}];
-    // east
-    _movements[0].right = function(that,n){ that.z +=n; return that;};
-    _movements[0].left = function(that,n){ that.z -=n; return that;};
-    _movements[0].fwd = function(that,n){ that.x +=n; return that;};
-    _movements[0].back = function(that,n){ that.x -= n; return that;};
-    // south
-    _movements[1].right = _movements[0].back;
-    _movements[1].left = _movements[0].fwd;
-    _movements[1].fwd = _movements[0].right;
-    _movements[1].back = _movements[0].left;
-    // west
-    _movements[2].right = _movements[0].left;
-    _movements[2].left = _movements[0].right;
-    _movements[2].fwd = _movements[0].back;
-    _movements[2].back = _movements[0].fwd;
-    // north
-    _movements[3].right = _movements[0].fwd;
-    _movements[3].left = _movements[0].back;
-    _movements[3].fwd = _movements[0].left;
-    _movements[3].back = _movements[0].right;
-    var _traverse = [{},{},{},{}];
-    // east
-    _traverse[0].width = function(that,n,callback){
-        var s = that.z, e = s + n;
-        for (; that.z < e; that.z++){
-            callback(that.z-s);
-        }
-        that.z = s;
-    };
-    _traverse[0].depth = function(that,n,callback){
-        var s = that.x, e = s+n;
-        for (;that.x < e;that.x++){
-            callback(that.x-s);
-        }
-        that.x = s;
-    };
-    // south
-    _traverse[1].width = function(that,n,callback){
-        var s = that.x, e = s-n;
-        for (;that.x > e;that.x--){
-            callback(s-that.x);
-        }
-        that.x = s;
-    };
-    _traverse[1].depth = _traverse[0].width;
-    // west
-    _traverse[2].width = function(that,n,callback){
-        var s = that.z, e = s-n;
-        for (;that.z > e;that.z--){
-            callback(s-that.z);
-        }
-        that.z = s;
-    };
-    _traverse[2].depth = _traverse[1].width;
-    // north
-    _traverse[3].width = _traverse[0].depth;
-    _traverse[3].depth = _traverse[2].width;
-    var _traverseHeight = function(that,n,callback){
-        var s = that.y, e = s + n;
-        for (; that.y < e; that.y++){
-            callback(that.y-s);
-        }
-        that.y = s;
-    };
-    //
-    // standard fisher-yates shuffle algorithm
-    //
-    var _fisherYates = function( myArray ) {
-        var i = myArray.length;
-        if ( i == 0 ) return false;
-        while ( --i ) {
-            var j = Math.floor( Math.random() * ( i + 1 ) );
-            var tempi = myArray[i];
-            var tempj = myArray[j];
-            myArray[i] = tempj;
-            myArray[j] = tempi;
-        }
-    };
-    
-    var _rand = function(blockDistribution){
-        if (!(blockDistribution.constructor == Array)){
-            var a = [];
-            for (var p in blockDistribution){
-                var n = blockDistribution[p];
-                for (var i = 0;i < n;i++){
-                    a.push(p);
-                }
-            }
-            blockDistribution = a;
-        }
-        while (blockDistribution.length < 1000){
-            // make array bigger so that it's more random
-            blockDistribution = blockDistribution.concat(blockDistribution);
-        }
-        _fisherYates(blockDistribution);
-        return blockDistribution;
-    };
-    Drone.extend('rand',function(dist,w,h,d){
-        var randomized = _rand(dist);
-        this.boxa(randomized,w,h,d);
-    });
-    var _trees = {
-        oak: org.bukkit.TreeType.BIG_TREE ,
-        birch: org.bukkit.TreeType.BIRCH ,
-        jungle: org.bukkit.TreeType.JUNGLE,
-        spruce: org.bukkit.TreeType.REDWOOD 
-    };
-    for (var p in _trees)
-    {
-        Drone.extend(p, function(v) {
-            return function() { 
-                var block = this.world.getBlockAt(this.x,this.y,this.z);
-                if (block.typeId == 2){
-                    this.up();
-                }
-                var treeLoc = new org.bukkit.Location(this.world,this.x,this.y,this.z);
-                var successful = treeLoc.world.generateTree(treeLoc,v);
-                if (block.typeId == 2){
-                    this.down();
-                }
-            };
-        }(_trees[p]));
-    }
-
-    Drone.extend('garden',function(w,d)
-    {
-        // make sure grass is present first
-        this.down().box(2,w,1,d).up(); 
-        
-        // make flowers more common than long grass
-        var dist = {37: 3, // red flower
-                    38: 3, // yellow flower
-                    '31:1': 2, // long grass
-                    0: 1
-                   };
-        
-        return this.rand(dist,w,1,d);
-    });
-    //
-    // Drone's clipboard 
-    //
-    Drone.clipBoard = {};
-    Drone.extend('copy', function(name, w, h, d)
-    {
-        var that = this;
-        var ccContent = [];
-        _traverse[this.dir].width(that,w,function(ww){
-            ccContent.push([]);
-            _traverseHeight(that,h,function(hh){
-                ccContent[ww].push([]);
-                _traverse[that.dir].depth(that,d,function(dd){
-                    var b = getBlock(that.x,that.y,that.z);
-                    ccContent[ww][hh][dd] = b;
-                });
-            });
-        });
-        Drone.clipBoard[name] = {dir: this.dir, blocks: ccContent};
-    });
-
-    Drone.extend('paste',function(name)
-    {
-        var ccContent = Drone.clipBoard[name];
-        var srcBlocks = ccContent.blocks;
-        var srcDir = ccContent.dir; // direction player was facing when copied.
-        var dirOffset = (4 + (this.dir - srcDir)) %4;
-        var that = this;
-        _traverse[this.dir].width(that,srcBlocks.length,function(ww){
-            var h = srcBlocks[ww].length;
-            _traverseHeight(that,h,function(hh){
-                var d = srcBlocks[ww][hh].length;
-                _traverse[that.dir].depth(that,d,function(dd){
-                    var b = srcBlocks[ww][hh][dd];
-                    var bm = that._getBlockIdAndMeta(b);
-                    var cb = bm[0];
-                    var md = bm[1];
-                    //
-                    // need to adjust blocks which face a direction
-                    //
-                    switch (cb)
-                    {
-                        // 
-                        // doors
-                        //
-                    case 64: // wood
-                    case 71: // iron
-                        // top half of door doesn't need to change
-                        if (md < 8) {
-                            md = (md + dirOffset) % 4;
-                        }
-                        break;
-                        //
-                        // stairs
-                        //
-                    case 53:  // oak 
-                    case 67:  // cobblestone 
-                    case 108: // red brick 
-                    case 109: // stone brick 
-                    case 114: // nether brick
-                    case 128: // sandstone
-                    case 134: // spruce
-                    case 135: // birch
-                    case 136: // junglewood
-                        var dir = md & 0x3;
-                        var a = Drone.PLAYER_STAIRS_FACING;
-                        var len = a.length;
-                        for (var c=0;c < len;c++){
-                            if (a[c] == dir){
-                                break;
-                            }
-                        }
-                        c = (c + dirOffset) %4;
-                        var newDir = a[c];
-                        md = (md >>2<<2) + newDir;
-                        break;
-                        //
-                        // signs , ladders etc
-                        //
-                    case 23: // dispenser
-                    case 54: // chest
-                    case 61: // furnace
-                    case 62: // burning furnace
-                    case 65: // ladder
-                    case 68: // wall sign
-                        var a = Drone.PLAYER_SIGN_FACING;
-                        var len = a.length;
-                        for (var c=0;c < len;c++){
-                            if (a[c] == md){
-                                break;
-                            }
-                        }
-                        c = (c + dirOffset) %4;
-                        var newDir = a[c];
-                        md = newDir;
-                        break;
-                    }
-                    putBlock(that.x,that.y,that.z,cb,md);
-                });
-            });
-        });
-    });
-    Drone.extend('cylinder0',_cylinder0);
-    Drone.extend('cylinder', _cylinder1);
-
-    //
-    // make all Drone's methods available also as standalone functions
-    // which return a drone object
-    // this way drones can be created and used as follows...
-    //
-    // /js box( blocks.oak, 7, 3, 4)
-    // 
-    // ... which is a short-hand way to create a wooden building 7x3x4
-    //
-/*
-    var ops = ['up','down','left','right','fwd','back','turn',
-               'chkpt','move',
-               'box','box0','boxa','prism','prism0','cylinder','cylinder0','arc',
-               'door','door2','sign','oak','spruce','birch','jungle',
-               'rand','garden',
-               'copy','paste'
-              ];
-
-    for (var i = 0;i < ops.length; i++){
-        global[ops[i]] = function(op){
-            return function(){
-                var result = new Drone();
-                result[op].apply(result,arguments);
-                return result;
-            };
-        }(ops[i]);
-    }
-*/
-    //
-    // wph 20130130 - make this a method - extensions can use it.
-    //
-    Drone.prototype._getBlockIdAndMeta = _getBlockIdAndMeta;
-
-}());
diff --git a/src/main/javascript/drone/sphere.js b/src/main/javascript/drone/sphere.js
deleted file mode 100644
index eaf6b8f..0000000
--- a/src/main/javascript/drone/sphere.js
+++ /dev/null
@@ -1,265 +0,0 @@
-/************************************************************************
-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.extend('sphere', function(block,radius)
-{
-    var lastRadius = radius;
-    var slices = [[radius,0]];
-    var diameter = radius*2;
-    var bm = this._getBlockIdAndMeta(block);
-
-    var r2 = radius*radius;
-    for (var i = 0; i <= radius;i++){
-        var newRadius = Math.round(Math.sqrt(r2 - i*i));
-        if (newRadius == lastRadius)
-            slices[slices.length-1][1]++;
-        else
-            slices.push([newRadius,1]);
-        lastRadius = newRadius;
-    }
-    this.chkpt('sphere');
-    //
-    // mid section
-    //
-    this.up(radius - slices[0][1])
-        .cylinder(block,radius,(slices[0][1]*2)-1,{blockType: bm[0],meta: bm[1]})
-        .down(radius-slices[0][1]);
-    
-    var yOffset = -1;
-    for (var i = 1; i < slices.length;i++)
-    {
-        yOffset += slices[i-1][1];
-        var sr = slices[i][0];
-        var sh = slices[i][1];
-        var v = radius + yOffset, h = radius-sr;
-        // northern hemisphere
-        this.up(v).fwd(h).right(h)
-            .cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1]})
-            .left(h).back(h).down(v);
-        
-        // southern hemisphere
-        v = radius - (yOffset+sh+1);
-        this.up(v).fwd(h).right(h)
-            .cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1]})
-            .left(h).back(h). down(v);
-    }
-    return this.move('sphere');
-});
-/************************************************************************
-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.extend('sphere0', function(block,radius)
-{
-/*
-    this.sphere(block,radius)
-        .fwd().right().up()
-        .sphere(0,radius-1)
-        .back().left().down();
-
-*/
-
-    var lastRadius = radius;
-    var slices = [[radius,0]];
-    var diameter = radius*2;
-    var bm = this._getBlockIdAndMeta(block);
-
-    var r2 = radius*radius;
-    for (var i = 0; i <= radius;i++){
-        var newRadius = Math.round(Math.sqrt(r2 - i*i));
-        if (newRadius == lastRadius)
-            slices[slices.length-1][1]++;
-        else
-            slices.push([newRadius,1]);
-        lastRadius = newRadius;
-    }
-    this.chkpt('sphere0');
-    //
-    // mid section
-    //
-    //.cylinder(block,radius,(slices[0][1]*2)-1,{blockType: bm[0],meta: bm[1]})
-    this.up(radius - slices[0][1])
-        .arc({blockType: bm[0], 
-              meta: bm[1], 
-              radius: radius, 
-              strokeWidth: 2,
-              stack: (slices[0][1]*2)-1,
-              fill: false
-             })
-        .down(radius-slices[0][1]);
-    
-    var yOffset = -1;
-    var len = slices.length;
-    for (var i = 1; i < len;i++)
-    {
-        yOffset += slices[i-1][1];
-        var sr = slices[i][0];
-        var sh = slices[i][1];
-        var v = radius + yOffset, h = radius-sr;
-        // northern hemisphere
-        // .cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1]})
-        this.up(v).fwd(h).right(h)
-            .arc({
-                blockType: bm[0],
-                meta: bm[1],
-                radius: sr,
-                stack: sh,
-                fill: false,
-                strokeWidth: i<len-1?1+(sr-slices[i+1][0]):1
-            })
-            .left(h).back(h).down(v);
-        
-        // southern hemisphere
-        v = radius - (yOffset+sh+1);
-        //.cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1]})
-        this.up(v).fwd(h).right(h)
-            .arc({
-                blockType: bm[0],
-                meta: bm[1],
-                radius: sr,
-                stack: sh,
-                fill: false,
-                strokeWidth: i<len-1?1+(sr-slices[i+1][0]):1
-            })
-            .left(h).back(h). down(v);
-    }
-    this.move('sphere0');
-
-    return this;
-
-});
-/************************************************************************
-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.extend('hemisphere', function(block,radius, northSouth){
-    var lastRadius = radius;
-    var slices = [[radius,0]];
-    var diameter = radius*2;
-    var bm = this._getBlockIdAndMeta(block);
-
-    var r2 = radius*radius;
-    for (var i = 0; i <= radius;i++){
-        var newRadius = Math.round(Math.sqrt(r2 - i*i));
-        if (newRadius == lastRadius)
-            slices[slices.length-1][1]++;
-        else
-            slices.push([newRadius,1]);
-        lastRadius = newRadius;
-    }
-    this.chkpt('hsphere');
-    //
-    // mid section
-    //
-    if (northSouth == "north"){
-        this.cylinder(block,radius,slices[0][1],{blockType: bm[0],meta: bm[1]});
-    } else {
-        this.up(radius - slices[0][1])
-        .cylinder(block,radius,slices[0][1],{blockType: bm[0],meta: bm[1]})
-        .down(radius - slices[0][1]);
-    }
-    
-    var yOffset = -1;
-    for (var i = 1; i < slices.length;i++)
-    {
-        yOffset += slices[i-1][1];
-        var sr = slices[i][0];
-        var sh = slices[i][1];
-        var v = yOffset, h = radius-sr;
-        if (northSouth == "north") {
-            // northern hemisphere
-            this.up(v).fwd(h).right(h)
-            .cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1]})
-            .left(h).back(h).down(v);
-        }else{
-            // southern hemisphere
-            v = radius - (yOffset+sh+1);
-            this.up(v).fwd(h).right(h)
-                .cylinder(block,sr,sh,{blockType: bm[0],meta: bm[1]})
-                .left(h).back(h). down(v);
-        }
-    }
-    return this.move('hsphere');
-    
-});
-/************************************************************************
-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.extend('hemisphere0', function(block,radius,northSouth){
-    return this.hemisphere(block,radius,northSouth)
-        .fwd().right().up(northSouth=="north"?0:1)
-        .hemisphere(0,radius-1,northSouth)
-        .back().left().down(northSouth=="north"?0:1);
-});
diff --git a/src/main/javascript/drone/test.js b/src/main/javascript/drone/test.js
deleted file mode 100644
index 1f30dd9..0000000
--- a/src/main/javascript/drone/test.js
+++ /dev/null
@@ -1,21 +0,0 @@
-Drone.prototype.testHorizontalStrokeWidth = function(){
-    this.arc({
-        blockType: 42,
-        meta: 0,
-        radius: 8,
-        orientation: 'horizontal',
-        strokeWidth: 3,
-        quadrants: {topright:true,topleft:true,bottomleft:true,bottomright:true}
-    });
-};
-
-Drone.prototype.testVerticalStrokeWidth = function(){
-    this.arc({
-        blockType: 42,
-        meta: 0,
-        radius: 8,
-        orientation: 'vertical',
-        strokeWidth: 3,
-        quadrants: {topright:true,topleft:true,bottomleft:true,bottomright:true}
-    });
-};