Updating blocks and items

Added new blocks/items and added constants to existing blocks/items for
clearer recipe making.

src/pocketmine/block/NetherBrickFence.php

@@ -0,0 +1,72 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____  
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \ 
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/ 
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_| 
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ * 
+ *
+*/
+namespace pocketmine\block;
+
+use pocketmine\block\Block;
+use pocketmine\block\Fence;
+use pocketmine\item\Item;
+//use pocketmine\item\Tool;
+
+class NetherBrickFence extends Transparent {
+       
+	public function __construct(){
+		parent::__construct(self::NETHER_BRICK_FENCE);
+	}
+	
+	public function getBreakTime(Item $item){
+		if ($item instanceof Air){
+			//Breaking by hand
+			return 10;
+		}
+		else{
+			// Other breaktimes are equal to woodfences.
+			return parent::getBreakTime($item);
+		}
+	}
+
+	public function getHardness(){
+		return 2;
+	}
+        
+	public function getToolType(){
+		//Different then the woodfences
+		return Tool::TYPE_PICKAXE;
+	}
+	
+	public function getName(){
+		return "Nether Brick Fence";
+	}
+	
+	public function canConnect(Block $block){
+		//TODO: activate comments when the NetherBrickFenceGate class has been created.
+		return ($block instanceof NetherBrickFence /* or $block instanceof NetherBrickFenceGate */) ? true : $block->isSolid() and !$block->isTransparent();
+	}
+
+	public function getDrops(Item $item){
+		if($item->isPickaxe()){
+			return [
+				[Item::FENCE, Fence::FENCE_NETHER_BRICK, 1],
+			];
+		}else{
+			return [];
+		}
+	}        
+}