PocketMine-MP/src/pocketmine/block/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/
 * 
 *
*/

namespace pocketmine\block;

use pocketmine\item\Item;
use pocketmine\math\AxisAlignedBB;
use pocketmine\nbt\NBT;
use pocketmine\nbt\tag\Compound;
use pocketmine\nbt\tag\Enum;
use pocketmine\nbt\tag\Int;
use pocketmine\nbt\tag\String;
use pocketmine\Player;
use pocketmine\tile\Chest as TileChest;
use pocketmine\tile\Tile;

class Chest extends Transparent{

	protected $id = self::CHEST;

	public function __construct($meta = 0){
		$this->meta = $meta;
	}

	public function canBeActivated(){
		return true;
	}

	public function getHardness(){
		return 15;
	}

	public function getName(){
		return "Chest";
	}

	protected function recalculateBoundingBox(){
		return new AxisAlignedBB(
			$this->x + 0.0625,
			$this->y,
			$this->z + 0.0625,
			$this->x + 0.9375,
			$this->y + 0.9475,
			$this->z + 0.9375
		);
	}

	public function place(Item $item, Block $block, Block $target, $face, $fx, $fy, $fz, Player $player = null){
		$faces = [
			0 => 4,
			1 => 2,
			2 => 5,
			3 => 3,
		];

		$chest = null;
		$this->meta = $faces[$player instanceof Player ? $player->getDirection() : 0];

		for($side = 2; $side <= 5; ++$side){
			if(($this->meta === 4 or $this->meta === 5) and ($side === 4 or $side === 5)){
				continue;
			}elseif(($this->meta === 3 or $this->meta === 2) and ($side === 2 or $side === 3)){
				continue;
			}
			$c = $this->getSide($side);
			if($c instanceof Chest and $c->getDamage() === $this->meta){
				$tile = $this->getLevel()->getTile($c);
				if($tile instanceof TileChest and !$tile->isPaired()){
					$chest = $tile;
					break;
				}
			}
		}

		$this->getLevel()->setBlock($block, $this, true, true);
		$nbt = new Compound(false, [
			new Enum("Items", []),
			new String("id", Tile::CHEST),
			new Int("x", $this->x),
			new Int("y", $this->y),
			new Int("z", $this->z)
		]);
		$nbt->Items->setTagType(NBT::TAG_Compound);
		$tile = Tile::createTile("Chest", $this->getLevel()->getChunk($this->x >> 4, $this->z >> 4), $nbt);

		if($chest instanceof TileChest and $tile instanceof TileChest){
			$chest->pairWith($tile);
			$tile->pairWith($chest);
		}

		return true;
	}

	public function onBreak(Item $item){
		$t = $this->getLevel()->getTile($this);
		if($t instanceof TileChest){
			$t->unpair();
		}
		$this->getLevel()->setBlock($this, new Air(), true, true);

		return true;
	}

	public function onActivate(Item $item, Player $player = null){
		if($player instanceof Player){
			$top = $this->getSide(1);
			if($top->isTransparent() !== true){
				return true;
			}

			$t = $this->getLevel()->getTile($this);
			$chest = null;
			if($t instanceof TileChest){
				$chest = $t;
			}else{
				$nbt = new Compound(false, [
					new Enum("Items", []),
					new String("id", Tile::CHEST),
					new Int("x", $this->x),
					new Int("y", $this->y),
					new Int("z", $this->z)
				]);
				$nbt->Items->setTagType(NBT::TAG_Compound);
				$chest = Tile::createTile("Chest", $this->getLevel()->getChunk($this->x >> 4, $this->z >> 4), $nbt);
			}


			if($player->isCreative()){
				return true;
			}
			$player->addWindow($chest->getInventory());
		}

		return true;
	}

	public function getDrops(Item $item){
		return [
			[$this->id, 0, 1],
		];
	}
}