From c67e42a723310a8959117dee7dd9b2cb58d3c3bb Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <dktapps@pmmp.io>
Date: Thu, 7 Jul 2022 01:44:13 +0100
Subject: [PATCH] Add a hook to enable blocks to react to projectiles colliding
 with them this enables implementing blocks such as the target block.

---
 src/block/Block.php                  | 8 ++++++++
 src/entity/projectile/Projectile.php | 1 +
 2 files changed, 9 insertions(+)

diff --git a/src/block/Block.php b/src/block/Block.php
index cddfe0440..38abcfb4f 100644
--- a/src/block/Block.php
+++ b/src/block/Block.php
@@ -32,6 +32,7 @@ use pocketmine\block\utils\SupportType;
 use pocketmine\data\runtime\RuntimeDataReader;
 use pocketmine\data\runtime\RuntimeDataWriter;
 use pocketmine\entity\Entity;
+use pocketmine\entity\projectile\Projectile;
 use pocketmine\item\enchantment\VanillaEnchantments;
 use pocketmine\item\Item;
 use pocketmine\item\ItemBlock;
@@ -626,6 +627,13 @@ class Block{
 		return null;
 	}
 
+	/**
+	 * Called when a projectile collides with one of this block's collision boxes.
+	 */
+	public function onProjectileHit(Projectile $projectile, RayTraceResult $hitResult) : void{
+		//NOOP
+	}
+
 	/**
 	 * @return AxisAlignedBB[]
 	 */
diff --git a/src/entity/projectile/Projectile.php b/src/entity/projectile/Projectile.php
index 41c5aa4cf..74bb5a0a2 100644
--- a/src/entity/projectile/Projectile.php
+++ b/src/entity/projectile/Projectile.php
@@ -306,5 +306,6 @@ abstract class Projectile extends Entity{
 	 */
 	protected function onHitBlock(Block $blockHit, RayTraceResult $hitResult) : void{
 		$this->blockHit = $blockHit->getPosition()->asVector3();
+		$blockHit->onProjectileHit($this, $hitResult);
 	}
 }