Added CanDestroy and Lock tag

src/pocketmine/block/BurningFurnace.php

@@ -117,6 +117,12 @@ class BurningFurnace extends Solid{
 				$furnace = Tile::createTile("Furnace", $this->getLevel()->getChunk($this->x >> 4, $this->z >> 4), $nbt);
 			}
 
+			if(isset($furnace->namedtag->Lock) and $furnace->namedtag->Lock instanceof String){
+				if($furnace->namedtag->Lock->getValue() !== $item->getCustomName()){
+					return true;
+				}
+			}
+
 			if($player->isCreative()){
 				return true;
 			}

src/pocketmine/block/Chest.php

@@ -158,6 +158,11 @@ class Chest extends Transparent{
 				$chest = Tile::createTile("Chest", $this->getLevel()->getChunk($this->x >> 4, $this->z >> 4), $nbt);
 			}
 
+			if(isset($chest->namedtag->Lock) and $chest->namedtag->Lock instanceof String){
+				if($chest->namedtag->Lock->getValue() !== $item->getCustomName()){
+					return true;
+				}
+			}
 
 			if($player->isCreative()){
 				return true;

src/pocketmine/block/EnchantingTable.php

@@ -85,6 +85,7 @@ class EnchantingTable extends Transparent{
 
 	public function onActivate(Item $item, Player $player = null){
 		if($player instanceof Player){
+			//TODO lock
 			if($player->isCreative()){
 				return true;
 			}

src/pocketmine/level/Level.php

@@ -1562,6 +1562,24 @@ class Level implements ChunkManager, Metadatable{
 			}
 		}
 
+		$tag = $item->getNamedTagEntry("CanDestroy");
+		if($tag instanceof Enum){
+			$canBreak = false;
+			foreach($tag as $v){
+				if($v instanceof String){
+					$entry = Item::fromString($v->getValue());
+					if($entry->getId() > 0 and $entry->getBlock() !== null and $entry->getBlock()->getId() === $target->getId()){
+						$canBreak = true;
+						break;
+					}
+				}
+			}
+
+			if(!$canBreak){
+				return false;
+			}
+		}
+
 		if($createParticles){
 			$players = $this->getChunkPlayers($target->x >> 4, $target->z >> 4);
 			if($player !== null){