Ladder.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\HorizontalFacing;
use pocketmine\block\utils\HorizontalFacingTrait;
use pocketmine\block\utils\SupportType;
use pocketmine\entity\Entity;
use pocketmine\entity\Living;
use pocketmine\item\Item;
use pocketmine\math\Axis;
use pocketmine\math\AxisAlignedBB;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
 
class Ladder extends Transparent implements HorizontalFacing{
    use HorizontalFacingTrait;
 
    public function hasEntityCollision() : bool{
        return true;
    }
 
    public function isSolid() : bool{
        return false;
    }
 
    public function canClimb() : bool{
        return true;
    }
 
    public function onEntityInside(Entity $entity) : bool{
        if($entity instanceof Living && $entity->getPosition()->floor()->distanceSquared($this->position) < 1){ //entity coordinates must be inside block
            $entity->resetFallDistance();
            $entity->onGround = true;
        }
        return true;
    }
 
    protected function recalculateCollisionBoxes() : array{
        return [AxisAlignedBB::one()->trim($this->facing, 13 / 16)];
    }
 
    public function getSupportType(int $facing) : SupportType{
        return SupportType::NONE;
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        if($this->canBeSupportedAt($blockReplace, Facing::opposite($face)) && Facing::axis($face) !== Axis::Y){
            $this->facing = $face;
            return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
        }
 
        return false;
    }
 
    public function onNearbyBlockChange() : void{
        if(!$this->canBeSupportedAt($this, Facing::opposite($this->facing))){ //Replace with common break method
            $this->position->getWorld()->useBreakOn($this->position);
        }
    }
 
    private function canBeSupportedAt(Block $block, int $face) : bool{
        return $block->getAdjacentSupportType($face) === SupportType::FULL;
    }
}