tile/Chest.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\inventory\CombinedInventoryProxy;
use pocketmine\inventory\Inventory;
use pocketmine\inventory\SimpleInventory;
use pocketmine\math\Vector3;
use pocketmine\nbt\tag\CompoundTag;
use pocketmine\nbt\tag\IntTag;
use pocketmine\world\World;
use function abs;
 
class Chest extends Spawnable implements ContainerTile, Nameable{
    use NameableTrait {
        addAdditionalSpawnData as addNameSpawnData;
    }
    use ContainerTileTrait;
 
    public const TAG_PAIRX = "pairx";
    public const TAG_PAIRZ = "pairz";
    public const TAG_PAIR_LEAD = "pairlead";
 
    protected Inventory $inventory;
    protected ?CombinedInventoryProxy $doubleInventory = null;
 
    private ?array $pairXZ = null;
 
    public function __construct(World $world, Vector3 $pos){
        parent::__construct($world, $pos);
        $this->inventory = new SimpleInventory(27);
    }
 
    public function readSaveData(CompoundTag $nbt) : void{
        if(($pairXTag = $nbt->getTag(self::TAG_PAIRX)) instanceof IntTag && ($pairZTag = $nbt->getTag(self::TAG_PAIRZ)) instanceof IntTag){
            $pairX = $pairXTag->getValue();
            $pairZ = $pairZTag->getValue();
            if(
                ($this->position->x === $pairX && abs($this->position->z - $pairZ) === 1) ||
                ($this->position->z === $pairZ && abs($this->position->x - $pairX) === 1)
            ){
                $this->pairXZ = [$pairX, $pairZ];
            }else{
                $this->pairXZ = null;
            }
        }
        $this->loadName($nbt);
        $this->loadItems($nbt);
    }
 
    protected function writeSaveData(CompoundTag $nbt) : void{
        if($this->pairXZ !== null){
            [$pairX, $pairZ] = $this->pairXZ;
            $nbt->setInt(self::TAG_PAIRX, $pairX);
            $nbt->setInt(self::TAG_PAIRZ, $pairZ);
        }
        $this->saveName($nbt);
        $this->saveItems($nbt);
    }
 
    public function getCleanedNBT() : ?CompoundTag{
        $tag = parent::getCleanedNBT();
        if($tag !== null){
            //TODO: replace this with a purpose flag on writeSaveData()
            $tag->removeTag(self::TAG_PAIRX, self::TAG_PAIRZ);
        }
        return $tag;
    }
 
    public function close() : void{
        if(!$this->closed){
            $this->inventory->removeAllWindows();
            parent::close();
        }
    }
 
    public function getInventory() : Inventory{
        return $this->inventory;
    }
 
    public function getRealInventory() : Inventory{
        return $this->inventory;
    }
 
    public function getDefaultName() : string{
        return "Chest";
    }
 
    public function getPairXZ() : ?array{
        return $this->pairXZ;
    }
 
    public function setPairXZ(?array $pairXZ) : void{
        $this->pairXZ = $pairXZ;
    }
 
    protected function addAdditionalSpawnData(CompoundTag $nbt) : void{
        if($this->pairXZ !== null){
            $nbt->setInt(self::TAG_PAIRX, $this->pairXZ[0]);
            $nbt->setInt(self::TAG_PAIRZ, $this->pairXZ[1]);
        }
 
        $this->addNameSpawnData($nbt);
    }
}