Chest block now has responsibility for configuring double chest inventories

it already needs to locate the correct pair anyway to know the left/right for DoubleChestInventoryWindow, so we might as well use this logic for initializing the DoubleChestInventory itself too. The old logic in tile/Chest didn't work correctly.

src/block/Chest.php

@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace pocketmine\block;
 
 use pocketmine\block\inventory\ChestInventoryWindow;
+use pocketmine\block\inventory\DoubleChestInventory;
 use pocketmine\block\inventory\DoubleChestInventoryWindow;
 use pocketmine\block\tile\Chest as TileChest;
 use pocketmine\block\utils\FacesOppositePlacingPlayerTrait;
@@ -87,20 +88,27 @@ class Chest extends Transparent{
 					return true;
 				}
 
+				$window = null;
+				if($chest->isPaired()){
 					foreach([false, true] as $clockwise){
 						$sideFacing = Facing::rotateY($this->facing, $clockwise);
 						$side = $this->position->getSide($sideFacing);
 						$pair = $world->getTile($side);
 						if($pair instanceof TileChest && $pair->getPair() === $chest){
-						[$left, $right] = $clockwise ? [$side, $this->position] : [$this->position, $side];
+							[$left, $right] = $clockwise ? [$pair, $chest] : [$chest, $pair];
 
-						//TODO: we should probably construct DoubleChestInventory here directly too using the same logic
+							$doubleInventory = $left->getDoubleInventory() ?? $right->getDoubleInventory();
-						//right now it uses some weird logic in TileChest which produces incorrect results
+							if($doubleInventory === null){
-						//however I'm not sure if this is currently possible
+								$doubleInventory = new DoubleChestInventory($left->getInventory(), $right->getInventory());
-						$window = new DoubleChestInventoryWindow($player, $chest->getInventory(), $left, $right);
+								$left->setDoubleInventory($doubleInventory);
+								$right->setDoubleInventory($doubleInventory);
+							}
+
+							$window = new DoubleChestInventoryWindow($player, $doubleInventory, $left->getPosition(), $right->getPosition());
 							break;
 						}
 					}
+				}
 
 				$player->setCurrentWindow($window ?? new ChestInventoryWindow($player, $chest->getInventory(), $this->position));
 			}

src/block/tile/Barrel.php

@@ -61,10 +61,6 @@ class Barrel extends Spawnable implements Container, Nameable{
 		return $this->inventory;
 	}
 
-	public function getRealInventory() : Inventory{
-		return $this->inventory;
-	}
-
 	public function getDefaultName() : string{
 		return "Barrel";
 	}

src/block/tile/BrewingStand.php

@@ -117,10 +117,6 @@ class BrewingStand extends Spawnable implements Container, Nameable{
 		return $this->inventory;
 	}
 
-	public function getRealInventory() : Inventory{
-		return $this->inventory;
-	}
-
 	private function checkFuel(Item $item) : void{
 		$ev = new BrewingFuelUseEvent($this);
 		if(!$item->equals(VanillaItems::BLAZE_POWDER(), true, false)){

src/block/tile/Campfire.php

@@ -68,10 +68,6 @@ class Campfire extends Spawnable implements Container{
 		return $this->inventory;
 	}
 
-	public function getRealInventory() : CampfireInventory{
-		return $this->inventory;
-	}
-
 	/**
 	 * @return int[]
 	 * @phpstan-return array<int, int>

src/block/tile/Chest.php

@@ -115,15 +115,14 @@ class Chest extends Spawnable implements Container, Nameable{
 		$this->containerTraitBlockDestroyedHook();
 	}
 
-	public function getInventory() : Inventory|DoubleChestInventory{
+	public function getInventory() : Inventory{
-		if($this->isPaired() && $this->doubleInventory === null){
+		return $this->inventory;
-			$this->checkPairing();
-		}
-		return $this->doubleInventory instanceof DoubleChestInventory ? $this->doubleInventory : $this->inventory;
 	}
 
-	public function getRealInventory() : Inventory{
+	public function getDoubleInventory() : ?DoubleChestInventory{ return $this->doubleInventory; }
-		return $this->inventory;
+
+	public function setDoubleInventory(?DoubleChestInventory $doubleChestInventory) : void{
+		$this->doubleInventory = $doubleChestInventory;
 	}
 
 	protected function checkPairing() : void{
@@ -134,18 +133,7 @@ class Chest extends Spawnable implements Container, Nameable{
 		}elseif(($pair = $this->getPair()) instanceof Chest){
 			if(!$pair->isPaired()){
 				$pair->createPair($this);
-				$pair->checkPairing();
+				$this->doubleInventory = $pair->doubleInventory = null;
-			}
-			if($this->doubleInventory === null){
-				if($pair->doubleInventory !== null){
-					$this->doubleInventory = $pair->doubleInventory;
-				}else{
-					if(($pair->position->x + ($pair->position->z << 15)) > ($this->position->x + ($this->position->z << 15))){ //Order them correctly
-						$this->doubleInventory = $pair->doubleInventory = new DoubleChestInventory($pair->inventory, $this->inventory);
-					}else{
-						$this->doubleInventory = $pair->doubleInventory = new DoubleChestInventory($this->inventory, $pair->inventory);
-					}
-				}
 			}
 		}else{
 			$this->doubleInventory = null;

src/block/tile/ChiseledBookshelf.php

@@ -55,10 +55,6 @@ class ChiseledBookshelf extends Tile implements Container{
 		return $this->inventory;
 	}
 
-	public function getRealInventory() : SimpleInventory{
-		return $this->inventory;
-	}
-
 	public function getLastInteractedSlot() : ?ChiseledBookshelfSlot{
 		return $this->lastInteractedSlot;
 	}
@@ -87,7 +83,7 @@ class ChiseledBookshelf extends Tile implements Container{
 
 	protected function loadItems(CompoundTag $tag) : void{
 		if(($inventoryTag = $tag->getTag(Container::TAG_ITEMS)) instanceof ListTag && $inventoryTag->getTagType() === NBT::TAG_Compound){
-			$inventory = $this->getRealInventory();
+			$inventory = $this->inventory;
 			$listeners = $inventory->getListeners()->toArray();
 			$inventory->getListeners()->remove(...$listeners); //prevent any events being fired by initialization
 
@@ -118,7 +114,7 @@ class ChiseledBookshelf extends Tile implements Container{
 
 	protected function saveItems(CompoundTag $tag) : void{
 		$items = [];
-		foreach($this->getRealInventory()->getContents(true) as $slot => $item){
+		foreach($this->inventory->getContents(true) as $slot => $item){
 			if($item->isNull()){
 				$items[$slot] = CompoundTag::create()
 					->setByte(SavedItemStackData::TAG_COUNT, 0)

src/block/tile/Container.php

@@ -23,15 +23,12 @@ declare(strict_types=1);
 
 namespace pocketmine\block\tile;
 
-use pocketmine\inventory\Inventory;
 use pocketmine\inventory\InventoryHolder;
 
 interface Container extends InventoryHolder{
 	public const TAG_ITEMS = "Items";
 	public const TAG_LOCK = "Lock";
 
-	public function getRealInventory() : Inventory;
-
 	/**
 	 * Returns whether this container can be opened by an item with the given custom name.
 	 */

src/block/tile/ContainerTrait.php

@@ -25,7 +25,6 @@ namespace pocketmine\block\tile;
 
 use pocketmine\data\bedrock\item\SavedItemStackData;
 use pocketmine\data\SavedDataLoadingException;
-use pocketmine\inventory\Inventory;
 use pocketmine\item\Item;
 use pocketmine\nbt\NBT;
 use pocketmine\nbt\tag\CompoundTag;
@@ -40,11 +39,9 @@ trait ContainerTrait{
 	/** @var string|null */
 	private $lock = null;
 
-	abstract public function getRealInventory() : Inventory;
-
 	protected function loadItems(CompoundTag $tag) : void{
 		if(($inventoryTag = $tag->getTag(Container::TAG_ITEMS)) instanceof ListTag && $inventoryTag->getTagType() === NBT::TAG_Compound){
-			$inventory = $this->getRealInventory();
+			$inventory = $this->getInventory();
 			$listeners = $inventory->getListeners()->toArray();
 			$inventory->getListeners()->remove(...$listeners); //prevent any events being fired by initialization
 
@@ -71,7 +68,7 @@ trait ContainerTrait{
 
 	protected function saveItems(CompoundTag $tag) : void{
 		$items = [];
-		foreach($this->getRealInventory()->getContents() as $slot => $item){
+		foreach($this->getInventory()->getContents() as $slot => $item){
 			$items[] = $item->nbtSerialize($slot);
 		}
 
@@ -98,7 +95,7 @@ trait ContainerTrait{
 	 * @see Tile::onBlockDestroyedHook()
 	 */
 	protected function onBlockDestroyedHook() : void{
-		$inv = $this->getRealInventory();
+		$inv = $this->getInventory();
 		$pos = $this->getPosition();
 
 		$world = $pos->getWorld();

src/block/tile/Furnace.php

@@ -109,10 +109,6 @@ abstract class Furnace extends Spawnable implements Container, Nameable{
 		return $this->inventory;
 	}
 
-	public function getRealInventory() : Inventory{
-		return $this->getInventory();
-	}
-
 	protected function checkFuel(Item $fuel) : void{
 		$ev = new FurnaceBurnEvent($this, $fuel, $fuel->getFuelTime());
 		$ev->call();

src/block/tile/Hopper.php

@@ -73,8 +73,4 @@ class Hopper extends Spawnable implements Container, Nameable{
 	public function getInventory() : Inventory{
 		return $this->inventory;
 	}
-
-	public function getRealInventory() : Inventory{
-		return $this->inventory;
-	}
 }

src/block/tile/ShulkerBox.php

@@ -111,10 +111,6 @@ class ShulkerBox extends Spawnable implements Container, Nameable{
 		return $this->inventory;
 	}
 
-	public function getRealInventory() : Inventory{
-		return $this->inventory;
-	}
-
 	public function getDefaultName() : string{
 		return "Shulker Box";
 	}