Items that have contents now drops them on destroy

src/entity/object/ItemEntity.php

@@ -350,4 +350,10 @@ public function onCollideWithPlayer(Player $player) : void{
 		}
 		$this->flagForDespawn();
 	}
+
+	protected function onDeath() : void{
+		foreach($this->item->getContainedItems() as $item){
+			$this->getWorld()->dropItem($this->location, $item);
+		}
+	}
 }

src/item/Item.php

@@ -29,6 +29,7 @@
 use pocketmine\block\Block;
 use pocketmine\block\BlockBreakInfo;
 use pocketmine\block\BlockToolType;
+use pocketmine\block\tile\Container;
 use pocketmine\block\VanillaBlocks;
 use pocketmine\data\bedrock\EnchantmentIdMap;
 use pocketmine\data\bedrock\item\ItemTypeDeserializeException;
@@ -100,6 +101,9 @@ class Item implements \JsonSerializable{
 
 	protected bool $keepOnDeath = false;
 
+	/** @var Item[] $containedItems */
+	protected array $containedItems = [];
+
 	/**
 	 * Constructs a new Item type. This constructor should ONLY be used when constructing a new item TYPE to register
 	 * into the index.
@@ -238,6 +242,21 @@ public function setKeepOnDeath(bool $keepOnDeath) : void{
 		$this->keepOnDeath = $keepOnDeath;
 	}
 
+	/**
+	 * @return Item[]
+	 */
+	public function getContainedItems() : array{
+		return $this->containedItems;
+	}
+
+	/**
+	 * @param Item[] $items
+	 */
+	public function setContainedItems(array $items) : void{
+		Utils::validateArrayValueType($items, static function(Item $_) : void{});
+		$this->containedItems = $items;
+	}
+
 	/**
 	 * Returns whether this Item has a non-empty NBT.
 	 */
@@ -338,6 +357,15 @@ protected function deserializeCompoundTag(CompoundTag $tag) : void{
 		}
 
 		$this->keepOnDeath = $tag->getByte(self::TAG_KEEP_ON_DEATH, 0) !== 0;
+
+		$this->containedItems = [];
+		$containedItems = $tag->getListTag(Container::TAG_ITEMS);
+		if($containedItems !== null && $containedItems->getTagType() === NBT::TAG_Compound){
+			/** @var CompoundTag $itemNBT */
+			foreach($containedItems as $itemNBT){
+				$this->containedItems[] = Item::nbtDeserialize($itemNBT);
+			}
+		}
 	}
 
 	protected function serializeCompoundTag(CompoundTag $tag) : void{
@@ -406,6 +434,16 @@ protected function serializeCompoundTag(CompoundTag $tag) : void{
 		}else{
 			$tag->removeTag(self::TAG_KEEP_ON_DEATH);
 		}
+
+		if(count($this->containedItems) > 0){
+			$containedItems = new ListTag();
+			foreach($this->containedItems as $item){
+				$containedItems->push($item->nbtSerialize());
+			}
+			$tag->setTag(Container::TAG_ITEMS, $containedItems);
+		}else{
+			$tag->removeTag(Container::TAG_ITEMS);
+		}
 	}
 
 	public function getCount() : int{