MultiAnySupportTrait.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\utils;
 
use pocketmine\block\Block;
use pocketmine\item\Item;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
use function array_key_first;
use function count;
 
trait MultiAnySupportTrait{
    use MultiAnyFacingTrait;
 
    abstract protected function getInitialPlaceFaces(Block $blockReplace) : array;
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        $this->faces = $this->getInitialPlaceFaces($blockReplace);
        $availableFaces = $this->getAvailableFaces();
 
        if(count($availableFaces) === 0){
            return false;
        }
 
        $opposite = Facing::opposite($face);
        $placedFace = isset($availableFaces[$opposite]) ? $opposite : array_key_first($availableFaces);
        $this->faces[$placedFace] = $placedFace;
 
        return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
    }
 
    public function onNearbyBlockChange() : void{
        $changed = false;
 
        foreach($this->faces as $face){
            if($this->getAdjacentSupportType($face) !== SupportType::FULL){
                unset($this->faces[$face]);
                $changed = true;
            }
        }
 
        if($changed){
            $world = $this->position->getWorld();
            if(count($this->faces) === 0){
                $world->useBreakOn($this->position);
            }else{
                $world->setBlock($this->position, $this);
            }
        }
    }
 
    private function getAvailableFaces() : array{
        $faces = [];
        foreach(Facing::ALL as $face){
            if(!$this->hasFace($face) && $this->getAdjacentSupportType($face) === SupportType::FULL){
                $faces[$face] = $face;
            }
        }
        return $faces;
    }
}