PocketMine-MP/src/pocketmine/block/Door.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;

use pocketmine\item\Item;
use pocketmine\level\sound\DoorSound;
use pocketmine\math\AxisAlignedBB;
use pocketmine\math\Bearing;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\Player;


abstract class Door extends Transparent{
	/** @var int */
	protected $facing = Facing::NORTH;
	/** @var bool */
	protected $top = false;
	/** @var bool */
	protected $hingeRight = false;

	/** @var bool */
	protected $open = false;
	/** @var bool */
	protected $powered = false;


	protected function writeStateToMeta() : int{
		if($this->top){
			return 0x08 | ($this->hingeRight ? 0x01 : 0) | ($this->powered ? 0x02 : 0);
		}

		return Bearing::rotate(Bearing::fromFacing($this->facing), 1) | ($this->open ? 0x04 : 0);
	}

	public function readStateFromMeta(int $meta) : void{
		$this->top = $meta & 0x08;
		if($this->top){
			$this->hingeRight = ($meta & 0x01) !== 0;
			$this->powered = ($meta & 0x02) !== 0;
		}else{
			$this->facing = Bearing::toFacing(Bearing::rotate($meta & 0x03, -1));
			$this->open = ($meta & 0x04) !== 0;
		}
	}

	public function getStateBitmask() : int{
		return 0b1111;
	}

	/**
	 * Copies door properties from the other half of the door, since metadata is split between the two halves.
	 * TODO: the blockstate should be updated directly on creation so these properties can be detected in advance.
	 */
	private function updateStateFromOtherHalf() : void{
		$other = $this->getSide($this->top ? Facing::DOWN : Facing::UP);
		if($other instanceof Door and $other->isSameType($this)){
			if($this->top){
				$this->facing = $other->facing;
				$this->open = $other->open;
			}else{
				$this->hingeRight = $other->hingeRight;
				$this->powered = $other->powered;
			}
		}
	}

	public function isSolid() : bool{
		return false;
	}

	protected function recalculateBoundingBox() : ?AxisAlignedBB{
		$f = 0.1875;
		$this->updateStateFromOtherHalf();

		$bb = new AxisAlignedBB(0, 0, 0, 1, 2, 1);

		if($this->facing === Facing::EAST){
			if($this->open){
				if(!$this->hingeRight){
					$bb->setBounds(0, 0, 0, 1, 1, $f);
				}else{
					$bb->setBounds(0, 0, 1 - $f, 1, 1, 1);
				}
			}else{
				$bb->setBounds(0, 0, 0, $f, 1, 1);
			}
		}elseif($this->facing === Facing::SOUTH){
			if($this->open){
				if(!$this->hingeRight){
					$bb->setBounds(1 - $f, 0, 0, 1, 1, 1);
				}else{
					$bb->setBounds(0, 0, 0, $f, 1, 1);
				}
			}else{
				$bb->setBounds(0, 0, 0, 1, 1, $f);
			}
		}elseif($this->facing === Facing::WEST){
			if($this->open){
				if(!$this->hingeRight){
					$bb->setBounds(0, 0, 1 - $f, 1, 1, 1);
				}else{
					$bb->setBounds(0, 0, 0, 1, 1, $f);
				}
			}else{
				$bb->setBounds(1 - $f, 0, 0, 1, 1, 1);
			}
		}elseif($this->facing === Facing::NORTH){
			if($this->open){
				if(!$this->hingeRight){
					$bb->setBounds(0, 0, 0, $f, 1, 1);
				}else{
					$bb->setBounds(1 - $f, 0, 0, 1, 1, 1);
				}
			}else{
				$bb->setBounds(0, 0, 1 - $f, 1, 1, 1);
			}
		}

		return $bb;
	}

	public function onNearbyBlockChange() : void{
		if($this->getSide(Facing::DOWN)->getId() === self::AIR){ //Replace with common break method
			$this->getLevel()->setBlock($this, BlockFactory::get(Block::AIR));
			if($this->getSide(Facing::UP) instanceof Door){
				$this->getLevel()->setBlock($this->getSide(Facing::UP), BlockFactory::get(Block::AIR));
			}
		}
	}

	public function place(Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, Player $player = null) : bool{
		if($face === Facing::UP){
			$blockUp = $this->getSide(Facing::UP);
			$blockDown = $this->getSide(Facing::DOWN);
			if(!$blockUp->canBeReplaced() or $blockDown->isTransparent()){
				return false;
			}

			if($player !== null){
				$this->facing = Bearing::toFacing($player->getDirection());
			}

			$next = $this->getSide(Facing::rotate($this->facing, Facing::AXIS_Y, false));
			$next2 = $this->getSide(Facing::rotate($this->facing, Facing::AXIS_Y, true));

			if($next->isSameType($this) or (!$next2->isTransparent() and $next->isTransparent())){ //Door hinge
				$this->hingeRight = true;
			}

			$topHalf = clone $this;
			$topHalf->top = true;

			parent::place($item, $blockReplace, $blockClicked, $face, $clickVector, $player);
			$this->level->setBlock($blockUp, $topHalf); //Top
			return true;
		}

		return false;
	}

	public function onActivate(Item $item, Player $player = null) : bool{
		$this->updateStateFromOtherHalf();
		$this->open = !$this->open;

		$other = $this->getSide($this->top ? Facing::DOWN : Facing::UP);
		if($other instanceof Door and $other->isSameType($this)){
			$other->open = $this->open;
			$this->level->setBlock($other, $other);
		}

		$this->level->setBlock($this, $this);
		$this->level->addSound(new DoorSound($this));

		return true;
	}

	public function getDropsForCompatibleTool(Item $item) : array{
		if(!$this->top){ //bottom half only
			return parent::getDropsForCompatibleTool($item);
		}

		return [];
	}

	public function isAffectedBySilkTouch() : bool{
		return false;
	}

	public function getAffectedBlocks() : array{
		$other = $this->getSide($this->top ? Facing::DOWN : Facing::UP);
		if($other->isSameType($this)){
			return [$this, $other];
		}
		return parent::getAffectedBlocks();
	}
}