From bf71ddb0b56b5d6f8bb1b69eb4b250001debaa0a Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Tue, 19 Feb 2019 10:01:57 +0000
Subject: [PATCH] Snow layers now fall as expected

---
 src/pocketmine/block/SnowLayer.php | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/src/pocketmine/block/SnowLayer.php b/src/pocketmine/block/SnowLayer.php
index f4ab36765..542d2f700 100644
--- a/src/pocketmine/block/SnowLayer.php
+++ b/src/pocketmine/block/SnowLayer.php
@@ -24,6 +24,8 @@ declare(strict_types=1);
 namespace pocketmine\block;
 
 use pocketmine\block\utils\BlockDataValidator;
+use pocketmine\block\utils\Fallable;
+use pocketmine\block\utils\FallableTrait;
 use pocketmine\item\Item;
 use pocketmine\item\ItemFactory;
 use pocketmine\item\TieredTool;
@@ -34,7 +36,8 @@ use pocketmine\Player;
 use function floor;
 use function max;
 
-class SnowLayer extends Flowable{
+class SnowLayer extends Flowable implements Fallable{
+	use FallableTrait;
 
 	protected $id = self::SNOW_LAYER;
 
@@ -97,12 +100,6 @@ class SnowLayer extends Flowable{
 		return false;
 	}
 
-	public function onNearbyBlockChange() : void{
-		if(!$this->getSide(Facing::DOWN)->isSolid()){
-			$this->getLevel()->setBlock($this, BlockFactory::get(Block::AIR), false);
-		}
-	}
-
 	public function ticksRandomly() : bool{
 		return true;
 	}
@@ -113,6 +110,10 @@ class SnowLayer extends Flowable{
 		}
 	}
 
+	public function tickFalling() : ?Block{
+		return null;
+	}
+
 	public function getDropsForCompatibleTool(Item $item) : array{
 		return [
 			ItemFactory::get(Item::SNOWBALL, 0, max(1, (int) floor($this->layers / 2)))