From 23752548fee828c824fb174a19b1618d12cb8aed Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Wed, 30 Aug 2017 15:42:31 +0100
Subject: [PATCH] Address several LevelDB related crashdumps in the crash
 archive

---
 src/pocketmine/level/format/Chunk.php              | 2 +-
 src/pocketmine/level/format/io/leveldb/LevelDB.php | 3 ++-
 src/pocketmine/tile/Tile.php                       | 4 ++++
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/pocketmine/level/format/Chunk.php b/src/pocketmine/level/format/Chunk.php
index fe7636eef..3b8714198 100644
--- a/src/pocketmine/level/format/Chunk.php
+++ b/src/pocketmine/level/format/Chunk.php
@@ -634,7 +634,7 @@ class Chunk{
 	 * @param Tile $tile
 	 */
 	public function addTile(Tile $tile){
-		if($tile->closed){
+		if($tile->isClosed()){
 			throw new \InvalidArgumentException("Attempted to add a garbage closed Tile to a chunk");
 		}
 		$this->tiles[$tile->getId()] = $tile;
diff --git a/src/pocketmine/level/format/io/leveldb/LevelDB.php b/src/pocketmine/level/format/io/leveldb/LevelDB.php
index 37a4b9af6..fe8fc49bf 100644
--- a/src/pocketmine/level/format/io/leveldb/LevelDB.php
+++ b/src/pocketmine/level/format/io/leveldb/LevelDB.php
@@ -514,8 +514,9 @@ class LevelDB extends BaseLevelProvider{
 	private function writeTags(array $targets, string $index){
 		$nbt = new NBT(NBT::LITTLE_ENDIAN);
 		$out = [];
+		/** @var Entity|Tile $target */
 		foreach($targets as $target){
-			if(!$target->closed){
+			if(!$target->isClosed()){
 				$target->saveNBT();
 				$out[] = $target->namedtag;
 			}
diff --git a/src/pocketmine/tile/Tile.php b/src/pocketmine/tile/Tile.php
index ecb93639e..da43b1953 100644
--- a/src/pocketmine/tile/Tile.php
+++ b/src/pocketmine/tile/Tile.php
@@ -180,6 +180,10 @@ abstract class Tile extends Position{
 		$this->level->updateTiles[$this->id] = $this;
 	}
 
+	public function isClosed() : bool{
+		return $this->closed;
+	}
+
 	public function __destruct(){
 		$this->close();
 	}