From 01d93d6e107f8bb6455bc3ed38af71d49086e050 Mon Sep 17 00:00:00 2001
From: Shoghi Cervantes <shoghicp@gmail.com>
Date: Fri, 7 Aug 2015 22:13:52 +0200
Subject: [PATCH] Added CanPlaceOn tag

---
 src/pocketmine/item/Item.php   |  2 +-
 src/pocketmine/level/Level.php | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/pocketmine/item/Item.php b/src/pocketmine/item/Item.php
index 5bfff2c26..1cd7043ea 100644
--- a/src/pocketmine/item/Item.php
+++ b/src/pocketmine/item/Item.php
@@ -918,7 +918,7 @@ class Item{
 
 			return $blocks;
 		}else{
-			$b = explode(":", str_replace(" ", "_", trim($str)));
+			$b = explode(":", str_replace([" ", "minecraft:"], ["_", ""], trim($str)));
 			if(!isset($b[1])){
 				$meta = 0;
 			}else{
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 47fabbe15..0a99aab89 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -1706,6 +1706,24 @@ class Level implements ChunkManager, Metadatable{
 			}
 		}
 
+		$tag = $item->getNamedTagEntry("CanPlaceOn");
+		if($tag instanceof Enum){
+			$canPlace = false;
+			foreach($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()){
+						$canPlace = true;
+						break;
+					}
+				}
+			}
+
+			if(!$canPlace){
+				return false;
+			}
+		}
+
 
 		if($player !== null){
 			$ev = new BlockPlaceEvent($player, $hand, $block, $target, $item);