Torch.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\utils\SupportType;
use pocketmine\data\runtime\RuntimeDataDescriber;
use pocketmine\item\Item;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
 
class Torch extends Flowable{
 
    protected int $facing = Facing::UP;
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->facingExcept($this->facing, Facing::DOWN);
    }
 
    public function getFacing() : int{ return $this->facing; }
 
    public function setFacing(int $facing) : self{
        if($facing === Facing::DOWN){
            throw new \InvalidArgumentException("Torch may not face DOWN");
        }
        $this->facing = $facing;
        return $this;
    }
 
    public function getLightLevel() : int{
        return 14;
    }
 
    public function onNearbyBlockChange() : void{
        if(!$this->canBeSupportedAt($this, Facing::opposite($this->facing))){
            $this->position->getWorld()->useBreakOn($this->position);
        }
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        if($face !== Facing::DOWN && $this->canBeSupportedAt($blockReplace, Facing::opposite($face))){
            $this->facing = $face;
            return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
        }else{
            foreach([
                Facing::SOUTH,
                Facing::WEST,
                Facing::NORTH,
                Facing::EAST,
                Facing::DOWN
            ] as $side){
                if($this->canBeSupportedAt($blockReplace, $side)){
                    $this->facing = Facing::opposite($side);
                    return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
                }
            }
        }
        return false;
    }
 
    private function canBeSupportedAt(Block $block, int $face) : bool{
        return $face === Facing::DOWN ?
            $block->getAdjacentSupportType($face)->hasCenterSupport() :
            $block->getAdjacentSupportType($face) === SupportType::FULL;
    }
}