From 6a39caa204a9d8b24d1e4c2da63c3682831735f0 Mon Sep 17 00:00:00 2001
From: Leo Lee <leolee3914@gmail.com>
Date: Fri, 4 Mar 2022 03:02:13 +0800
Subject: [PATCH] Fixed mycelium spreading onto coarse dirt (#4816)

---
 src/block/Mycelium.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/block/Mycelium.php b/src/block/Mycelium.php
index 4d456ea98..bd6611505 100644
--- a/src/block/Mycelium.php
+++ b/src/block/Mycelium.php
@@ -50,7 +50,7 @@ class Mycelium extends Opaque{
 		$y = mt_rand($this->position->y - 2, $this->position->y + 2);
 		$z = mt_rand($this->position->z - 1, $this->position->z + 1);
 		$block = $this->position->getWorld()->getBlockAt($x, $y, $z);
-		if($block->getId() === BlockLegacyIds::DIRT){
+		if($block instanceof Dirt && !$block->isCoarse()){
 			if($block->getSide(Facing::UP) instanceof Transparent){
 				$ev = new BlockSpreadEvent($block, $this, VanillaBlocks::MYCELIUM());
 				$ev->call();