structure.module

<?php

/**
 * Implements hook_node_info().
 */
function structure_node_info() {
  return array(
    'structure' => array(
      'name' => t('Structure'),
      'base' => 'structure',
      'description' => t('Allows user to build Minecraft-esque structures.'),
    )
  );
}

/**
 * Implements hook_form().
 */
function structure_form($node, $form_state) {
  drupal_add_css(drupal_get_path('module', 'structure') . '/styles.css');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/Three.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/Stats.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/jquery-ui-1.8.16.custom.min.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/RequestAnimationFrame.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/js/structure.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/js/structure-3d.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/base64_decode.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/js/update.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/JsNbtParser/js/NbtParser.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/JsNbtParser/js/binary-parser.js');
  drupal_add_js(drupal_get_path('module', 'structure') . '/libs/JsNbtParser/js/World_Schematic.js');
  drupal_add_js(array('structurePath' => drupal_get_path('module', 'structure')), 'setting');
  if (isset($node->field_structurearray['und']['0']['value'])) {
    drupal_add_js(array('structureArray' => $node->field_structurearray['und']['0']['value']), 'setting');
  }
  drupal_add_js(array('structureMode' => 'edit'), 'setting');

  return structure_node_content_form($node, $form_state);
}

/**
 * Implements hook_node_content_form
 */

function structure_node_content_form($node, $form_state) {
  $form = array();
  $form['#validate'][] = 'structure_node_content_form_validate';

  $type = node_type_get_type($node);

  if ($type->has_title) {
    $form['title'] = array(
      '#type' => 'textfield',
      '#title' => check_plain($type->title_label),
      '#required' => TRUE,
      '#default_value' => $node->title,
      '#maxlength' => 255,
      '#weight' => -5,
    );
  }

  $form['block_type'] = array(
    '#type' => 'radios',
    '#title' => t('Block Type'),
    '#required' => TRUE,
    '#options' => array(
      '0'     => t('Air'),
      '1'     => t('Stone'),
      '2'     => t('Grass'),
      '3'     => t('Dirt'),
      '4'     => t('Cobblestone'),
      '5'     => t('Wooden Plank'),
      '6'     => t('Sapling'),
      '6:1'   => t('Sapling (Pine)'),
      '6:2'   => t('Sapling (Birch'),
      '7'     => t('Bedrock'),
      '8'     => t('Water (No Spread)'),
      '9'     => t('Water'),
      '10'    => t('Lava (No Spread)'),
      '11'    => t('Lava'),
      '12'    => t('Sand'),
      '13'    => t('Gravel'),
      '14'    => t('Gold Ore'),
      '15'    => t('Iron Ore'),
      '16'    => t('Coal Ore'),
      '17'    => t('Wood'),
      '17:1'  => t('Wood (Pine)'),
      '17:2'  => t('Wood (Birch)'),
      '18'    => t('Leaves'),
      '18:1'  => t('Leaves (Pine)'),
      '18:2'  => t('Leaves (Birch)'),
      '19'    => t('Sponge'),
      '20'    => t('Glass'),
      '21'    => t('Lapis Lazuli Ore'),
      '22'    => t('Lapis Lazuli Block'),
      '23'    => t('Dispenser'),
      '24'    => t('Sandstone'),
      '25'    => t('Note Block'),
      '26'    => t('Bed (Block)'),
      '27'    => t('Powered Rail'),
      '28'    => t('Detector Rail'),
      '29'    => t('Sticky Piston'),
      '30'    => t('CobWeb'),
      '31'    => t('Tall Grass (Dead Bush)'),
      '31:1'  => t('Tall Grass'),
      '31:2'  => t('Tall Grass (Fern)'),
      '32'    => t('Dead Bush'),
      '33'    => t('Piston'),
      '34'    => t('Piston (Extension)'),
      '35'    => t('Wool'),
      '35:1'  => t('Orange Wool'),
      '35:2'  => t('Magenta Wool'),
      '35:3'  => t('Light Blue Wool'),
      '35:4'  => t('Yellow Wool'),
      '35:5'  => t('Lime Wool'),
      '35:6'  => t('Pink Wool'),
      '35:7'  => t('Gray Wool'),
      '35:8'  => t('Light Gray Wool'),
      '35:9'  => t('Cyan Wool'),
      '35:10' => t('Purple Wool'),
      '35:11' => t('Blue Wool'),
      '35:12' => t('Brown Wool'),
      '35:13' => t('Green Wool'),
      '35:14' => t('Red Wool'),
      '35:15' => t('Black Wool'),
      '37'    => t('Dandelion'),
      '38'    => t('Rose'),
      '39'    => t('Brown Mushroom'),
      '40'    => t('Red Mushroom'),
      '41'    => t('Gold Block'),
      '42'    => t('Iron Block'),
      '43'    => t('Stone Slab (Double)'),
      '43:1'  => t('Sandstone Slab (Double)'),
      '43:2'  => t('Wooden Slab (Double)'),
      '43:3'  => t('Cobblestone Slab (Double'),
      '43:4'  => t('Brick Slab (Double)'),
      '43:5'  => t('Stone Brick Slab (Double)'),
      '44'    => t('Stone Slab'),
      '44:1'  => t('Sandstone Slab'),
      '44:2'  => t('Wooden Slab'),
      '44:3'  => t('Cobblestone Slap'),
      '44:4'  => t('Brick Slab'),
      '44:5'  => t('Stone Brick Slab'),
      '45'    => t('Brick'),
      '46'    => t('TNT'),
      '47'    => t('Bookshelf'),
      '48'    => t('Moss Stone'),
      '49'    => t('Obsidian'),
      '50'    => t('Torch'),
      '51'    => t('Fire'),
      '52'    => t('Monster Spawner'),
      '53'    => t('Wooden Stairs'),
      '54'    => t('Chest'),
      '55'    => t('Redstone Wire'),
      '56'    => t('Diamond Ore'),
      '57'    => t('Diamond Block'),
      '58'    => t('Crafting Table'),
      '59'    => t('Seeds'),
      '60'    => t('Farmland'),
      '61'    => t('Furnace'),
      '62'    => t('Furnace (Smelting)'),
      '63'    => t('Sign (Post)'),
      '64'    => t('Wood Door (Block)'),
      '65'    => t('Ladder'),
      '66'    => t('Rails'),
      '67'    => t('Cobblestone Stairs'),
      '68'    => t('Sign (Wall)'),
      '69'    => t('Lever'),
      '70'    => t('Stone Pressure Plate'),
      '71'    => t('Iron Door (Block)'),
      '72'    => t('Wooden Pressure Plate'),
      '72'    => t('Wooden Pressure Plate'),
      '73'    => t('Redstone Ore'),
      '74'    => t('Redstone Ore (Glowing)'),
      '75'    => t('Redstone Torch (Off)'),
      '76'    => t('Redstone Torch'),
      '77'    => t('Stone Button'),
      '78'    => t('Snow'),
      '79'    => t('Ice'),
      '80'    => t('Snow Block'),
      '81'    => t('Cactus'),
      '82'    => t('Clay Block'),
      '83'    => t('Sugar Cane'),
      '84'    => t('Jukebox'),
      '85'    => t('Fence'),
      '86'    => t('Pumpkin'),
      '87'    => t('Netherrack'),
      '88'    => t('Soul Sand'),
      '89'    => t('Glowstone'),
      '90'    => t('Portal'),
      '91'    => t('Jack-O-Lantern'),
      '92'    => t('Cake (Block)'),
      '93'    => t('Redstone Repeater (Block Off)'),
      '94'    => t('Redstone Repeater (Block On)'),
      '95'    => t('Locked Chest'),
      '96'    => t('Trapdoor'),
      '97'    => t('Hidden Silverfish Stone Block'),
      '98'    => t('Stone Bricks'),
      '98:1'  => t('Mossy Stone Bricks'),
      '98:2'  => t('Cracked Stone Bricks'),
      '99'    => t('Huge Brown Mushroom (Block)'),
      '100'   => t('Huge Red Mushroom (Block)'),
      '101'   => t('Iron Bars'),
      '102'   => t('Glass Pane'),
      '103'   => t('Melon'),
      '104'   => t('Pumpkin Stem'),
      '105'   => t('Melon Stem'),
      '106'   => t('Vines'),
      '107'   => t('Fence Gate'),
      '108'   => t('Brick Stairs'),
      '109'   => t('Stone Brick Stairs'),
      '110'   => t('Mycelium'),
      '111'   => t('Lilypad'),
      '112'   => t('Nether Brick'),
      '113'   => t('Nether Brick Fence'),
      '114'   => t('Nether Brick Stairs'),
      '115'   => t('Nether Wart'),
      '116'   => t('Enchantment Table'),
      '117'   => t('Brewing Stand (Block)'),
      '118'   => t('Cauldron (Block)'),
      '119'   => t('End Portal'),
      '120'   => t('End Portal Frame'),
      '121'   => t('End Stone'),
      '122'   => t('Dragon Egg'),
      ),
    );

    $form['controls'] = array(
    	'#prefix' => '<div class="controls">',
    	'#suffix' => '</div>'
    );

    $form['controls']['xy_nav'] = array(
      '#prefix' => '<div class="xy-nav">',
      '#suffix' => '</div>',
    );

    $form['controls']['z_nav'] = array(
      '#prefix' => '<div class="z-nav">',
      '#suffix' => '</div>',
    );

    $form['controls']['z_nav']['up'] = array(
      '#markup' => '<button type="button" value="Up a Layer" class="up-z">+</button>',
    );
    $form['controls']['z_nav']['down']  = array(
      '#markup' => '<button type="button" value="Down a Layer" class="down-z">-</button>',
    );

    $form['controls']['xy_nav']['north'] = array(
      '#markup' => '<button type="button" value="North" class="north-y">↑</button>',
    );
    $form['controls']['xy_nav']['east']  = array(
      '#markup' => '<button type="button" value="East" class="east-x">→</button>',
    );
    $form['controls']['xy_nav']['south'] = array(
      '#markup' => '<button type="button" value="South" class="south-y">↓</button>',
    );
    $form['controls']['xy_nav']['west']  = array(
      '#markup' => '<button type="button" value="West" class="west-x">←</button>',
    );
    $form['controls']['xy_grid'] = array(
      '#markup' => '<div class="xy-grid"></div>',
    );

    $form['mc_3d'] = array(
      '#prefix' => '<div id="mc-3d">',
      '#suffix' => '</div>',
    );

    $form['mc_3d']['zoom_out'] = array(
      '#markup' => '<button type="button" value="Zoom Out" class="zoom-out">-</button>',
    );

    $form['mc_3d']['zoom_in'] = array(
      '#markup' => '<button type="button" value="Zoom In" class="zoom-in">+</button>',
    );

    $form['mc_3d']['canvas'] = array(
      '#markup' => '<div class="canvas-wrapper"><span class="enable-3d-warning">If you are using Google Chrome or Mozilla Firefox you can <a href="#enable3d" class="enable-3d">enable 3d</a>.</span></div>',
    );

    $form['file'] = array(
      '#type' => 'file',
      '#title' => t('Schematic File Upload'),
      '#description' => 'Optionally upload a .schematic file. This will erase any other changes made on this page.',
      '#size' => 22,
      '#prefix' => '<div id="upload-wrapper">',
    );

    $form['upload'] = array(
      '#type' => 'button',
      '#value' => 'Upload',
      '#tree' => TRUE,
      '#ajax' => array(
        'callback' => 'structure_node_content_form_ajax',
        'wrapper' => 'upload-wrapper',
      ),
      '#suffix' => '</div>',
    );

  return $form;
}

function structure_node_content_form_validate($form, &$form_state) {
}

function structure_node_content_form_ajax($form, &$form_state) {
  function bin2asc ($binary) {
    $val = 0;

    for ($i = strlen($binary) - 1; $i >= 0; $i--) {
        $ch = substr($binary, $i, 1);
        $val = ($val << 8) | ord($ch);
    }

    return $val;
  }

  $file = file_save_upload('file', array(
    'file_validate_extensions' => array('schematic'),
  ));

  $filename =  file_directory_temp() . $file->filename;
  ob_start("ob_gzhandler");
  $schematic = readFileAsBinary($filename);
  drupal_add_js(array('schematicFile' =>  base64_encode($schematic)), 'setting');

  unset($form['file']);

  return t('File uploaded successfully.');
}

/**
 * Implements hook_menu_local_tasks_alter().
 */
function structure_menu_local_tasks_alter(&$data, $router_item, $root_path) {
  global $user;

  // Add action link to 'node/add/structure' on 'structure' page.
  if ($root_path == 'structure') {
    $item = menu_get_item('node/add/structure');
    if ($item['access']) {
      $item['title'] = t('Create new structure');
      $data['actions']['output'][] = array(
        '#theme' => 'menu_local_action',
        '#link' => $item,
      );
    }
  }
  // Provide a helper action link to the author on the 'structure/%' page.
  elseif ($root_path == 'structure/%' && $router_item['page_arguments'][0]->uid == $user->uid) {
    $data['actions']['output']['structure'] = array(
      '#theme' => 'menu_local_action',
    );
    if (user_access('create structure content')) {
      $data['actions']['output']['structure']['#link']['title'] = t('Post new structure.');
      $data['actions']['output']['structure']['#link']['href'] = 'node/add/structure';
    }
    else {
      $data['actions']['output']['structure']['#link']['title'] = t('You are not allowed to post a new structure.');
    }
  }
}

/**
 * Implements hook_view().
 */
function structure_view($node, $view_mode) {
  if ($view_mode == 'full' && node_is_page($node)) {
    drupal_add_css(drupal_get_path('module', 'structure') . '/styles.css');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/Three.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/Stats.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/jquery-ui-1.8.16.custom.min.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/RequestAnimationFrame.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/js/structure.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/js/structure-3d.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/js/update.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/base64_decode.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/JsNbtParser/js/NbtParser.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/JsNbtParser/js/binary-parser.js');
    drupal_add_js(drupal_get_path('module', 'structure') . '/libs/JsNbtParser/js/World_Schematic.js');
    drupal_add_js(array('structurePath' => drupal_get_path('module', 'structure')), 'setting');
    drupal_add_js(array('structureArray' => $node->field_structurearray['und']['0']['value']), 'setting');
    drupal_add_js(array('structureMode' => 'view'), 'setting');

    $node->content['mc_3d'] = array(
      '#prefix' => '<div id="mc-3d">',
      '#suffix' => '</div>',
    );

    $node->content['mc_3d']['zoom_out'] = array(
      '#markup' => '<button type="button" value="Zoom Out" class="zoom-out">-</button>',
    );

    $node->content['mc_3d']['zoom_in'] = array(
      '#markup' => '<button type="button" value="Zoom In" class="zoom-in">+</button>',
    );

    $node->content['mc_3d']['canvas'] = array(
      '#markup' => '<div class="canvas-wrapper"><span class="enable-3d-warning">If you are using Google Chrome or Mozilla Firefox you can <a href="#enable3d" class="enable-3d">enable 3d</a>.</span></div>',
    );
  }

  return $node;
}

/**
 * Reads a file and deflates it if it's gzencoded.
 *
 * @param	{String} $filename  The name of the file to read
 * @return	{String}
 */
function readFileAsBinary($filename) {
    $handle = gzopen($filename, "rb"); //using gzopen auto detects whether or not the file is compressed
    $contents = stream_get_contents($handle);

    return $contents;
}