From 89521f166d8b43f2fd2af99f367888a34b44c492 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Sun, 21 Jun 2020 17:28:38 +0100
Subject: [PATCH] Explosion: account for multi-block structures, fixes #2767

---
 src/pocketmine/level/Explosion.php | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/pocketmine/level/Explosion.php b/src/pocketmine/level/Explosion.php
index 72101a075..e04fabed1 100644
--- a/src/pocketmine/level/Explosion.php
+++ b/src/pocketmine/level/Explosion.php
@@ -132,8 +132,11 @@ class Explosion{
 							if($blockId !== 0){
 								$blastForce -= (BlockFactory::$blastResistance[$blockId] / 5 + 0.3) * $this->stepLen;
 								if($blastForce > 0){
-									if(!isset($this->affectedBlocks[$index = Level::blockHash($vBlock->x, $vBlock->y, $vBlock->z)])){
-										$this->affectedBlocks[$index] = BlockFactory::get($blockId, $this->subChunkHandler->currentSubChunk->getBlockData($vBlock->x & 0x0f, $vBlock->y & 0x0f, $vBlock->z & 0x0f), $vBlock);
+									if(!isset($this->affectedBlocks[Level::blockHash($vBlock->x, $vBlock->y, $vBlock->z)])){
+										$_block = BlockFactory::get($blockId, $this->subChunkHandler->currentSubChunk->getBlockData($vBlock->x & 0x0f, $vBlock->y & 0x0f, $vBlock->z & 0x0f), $vBlock);
+										foreach($_block->getAffectedBlocks() as $_affectedBlock){
+											$this->affectedBlocks[Level::blockHash($_affectedBlock->x, $_affectedBlock->y, $_affectedBlock->z)] = $_affectedBlock;
+										}
 									}
 								}
 							}