tile/ChiseledBookshelf.php

<?php
 
/*
 *
 *  ____            _        _   __  __ _                  __  __ ____
 * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
 * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
 * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
 * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * @author PocketMine Team
 * @link http://www.pocketmine.net/
 *
 *
 */
 
declare(strict_types=1);
 
namespace pocketmine\block\tile;
 
use pocketmine\block\utils\ChiseledBookshelfSlot;
use pocketmine\data\bedrock\item\SavedItemData;
use pocketmine\data\bedrock\item\SavedItemStackData;
use pocketmine\inventory\SimpleInventory;
use pocketmine\item\Item;
use pocketmine\math\Vector3;
use pocketmine\nbt\NBT;
use pocketmine\nbt\tag\CompoundTag;
use pocketmine\nbt\tag\ListTag;
use pocketmine\nbt\tag\StringTag;
use pocketmine\nbt\UnexpectedTagTypeException;
use pocketmine\world\World;
use function count;
 
class ChiseledBookshelf extends Tile implements Container{
    use ContainerTrait;
 
    private const TAG_LAST_INTERACTED_SLOT = "LastInteractedSlot"; //TAG_Int
 
    private SimpleInventory $inventory;
 
    private ?ChiseledBookshelfSlot $lastInteractedSlot = null;
 
    public function __construct(World $world, Vector3 $pos){
        parent::__construct($world, $pos);
        $this->inventory = new SimpleInventory(count(ChiseledBookshelfSlot::cases()));
    }
 
    public function getInventory() : SimpleInventory{
        return $this->inventory;
    }
 
    public function getRealInventory() : SimpleInventory{
        return $this->inventory;
    }
 
    public function getLastInteractedSlot() : ?ChiseledBookshelfSlot{
        return $this->lastInteractedSlot;
    }
 
    public function setLastInteractedSlot(?ChiseledBookshelfSlot $lastInteractedSlot) : void{
        $this->lastInteractedSlot = $lastInteractedSlot;
    }
 
    public function readSaveData(CompoundTag $nbt) : void{
        $this->loadItems($nbt);
 
        $lastInteractedSlot = $nbt->getInt(self::TAG_LAST_INTERACTED_SLOT, 0);
        if($lastInteractedSlot !== 0){
            $this->lastInteractedSlot = ChiseledBookshelfSlot::tryFrom($lastInteractedSlot - 1);
        }
    }
 
    protected function writeSaveData(CompoundTag $nbt) : void{
        $this->saveItems($nbt);
 
        $nbt->setInt(self::TAG_LAST_INTERACTED_SLOT, $this->lastInteractedSlot !== null ?
            $this->lastInteractedSlot->value + 1 :
            0
        );
    }
 
    protected function loadItems(CompoundTag $tag) : void{
        try{
            $inventoryTag = $tag->getListTag(Container::TAG_ITEMS, CompoundTag::class);
        }catch(UnexpectedTagTypeException){
            //preserve the old behaviour of not throwing on wrong types
            $inventoryTag = null;
        }
        if($inventoryTag !== null){
            $inventory = $this->getRealInventory();
            $listeners = $inventory->getListeners()->toArray();
            $inventory->getListeners()->remove(...$listeners); //prevent any events being fired by initialization
 
            $newContents = [];
            $errorLogContext = "ChiseledBookshelf ($this->position)";
            foreach($inventoryTag as $slot => $itemNBT){
                $count = $itemNBT->getByte(SavedItemStackData::TAG_COUNT);
                if($count === 0){
                    continue;
                }
                $newContents[$slot] = Item::safeNbtDeserialize($itemNBT, "$errorLogContext slot $slot");
            }
            $inventory->setContents($newContents);
 
            $inventory->getListeners()->add(...$listeners);
        }
 
        if(($lockTag = $tag->getTag(Container::TAG_LOCK)) instanceof StringTag){
            $this->lock = $lockTag->getValue();
        }
    }
 
    protected function saveItems(CompoundTag $tag) : void{
        $items = [];
        foreach($this->getRealInventory()->getContents(true) as $slot => $item){
            if($item->isNull()){
                $items[$slot] = CompoundTag::create()
                    ->setByte(SavedItemStackData::TAG_COUNT, 0)
                    ->setShort(SavedItemData::TAG_DAMAGE, 0)
                    ->setString(SavedItemData::TAG_NAME, "")
                    ->setByte(SavedItemStackData::TAG_WAS_PICKED_UP, 0);
            }else{
                $items[$slot] = $item->nbtSerialize();
            }
        }
 
        $tag->setTag(Container::TAG_ITEMS, new ListTag($items, NBT::TAG_Compound));
 
        if($this->lock !== null){
            $tag->setString(Container::TAG_LOCK, $this->lock);
        }
    }
}