RedstoneComparator.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\block\tile\Comparator;
use pocketmine\block\utils\AnalogRedstoneSignalEmitter;
use pocketmine\block\utils\AnalogRedstoneSignalEmitterTrait;
use pocketmine\block\utils\HorizontalFacing;
use pocketmine\block\utils\HorizontalFacingTrait;
use pocketmine\block\utils\PoweredByRedstone;
use pocketmine\block\utils\PoweredByRedstoneTrait;
use pocketmine\block\utils\StaticSupportTrait;
use pocketmine\block\utils\SupportType;
use pocketmine\data\runtime\RuntimeDataDescriber;
use pocketmine\item\Item;
use pocketmine\math\AxisAlignedBB;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
use function assert;
 
class RedstoneComparator extends Flowable implements AnalogRedstoneSignalEmitter, PoweredByRedstone, HorizontalFacing{
    use HorizontalFacingTrait;
    use AnalogRedstoneSignalEmitterTrait;
    use PoweredByRedstoneTrait;
    use StaticSupportTrait;
 
    protected bool $isSubtractMode = false;
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->horizontalFacing($this->facing);
        $w->bool($this->isSubtractMode);
        $w->bool($this->powered);
    }
 
    public function readStateFromWorld() : Block{
        parent::readStateFromWorld();
        $tile = $this->position->getWorld()->getTile($this->position);
        if($tile instanceof Comparator){
            $this->signalStrength = $tile->getSignalStrength();
        }
 
        return $this;
    }
 
    public function writeStateToWorld() : void{
        parent::writeStateToWorld();
        $tile = $this->position->getWorld()->getTile($this->position);
        assert($tile instanceof Comparator);
        $tile->setSignalStrength($this->signalStrength);
    }
 
    public function isSubtractMode() : bool{
        return $this->isSubtractMode;
    }
 
    public function setSubtractMode(bool $isSubtractMode) : self{
        $this->isSubtractMode = $isSubtractMode;
        return $this;
    }
 
    protected function recalculateCollisionBoxes() : array{
        return [AxisAlignedBB::one()->trim(Facing::UP, 7 / 8)];
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        if($player !== null){
            $this->facing = Facing::opposite($player->getHorizontalFacing());
        }
        return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
    }
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        $this->isSubtractMode = !$this->isSubtractMode;
        $this->position->getWorld()->setBlock($this->position, $this);
        return true;
    }
 
    private function canBeSupportedAt(Block $block) : bool{
        return $block->getAdjacentSupportType(Facing::DOWN) !== SupportType::NONE;
    }
 
    //TODO: redstone functionality
}