Cactus.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\AgeableTrait;
use pocketmine\block\utils\BlockEventHelper;
use pocketmine\block\utils\StaticSupportTrait;
use pocketmine\block\utils\SupportType;
use pocketmine\entity\Entity;
use pocketmine\event\entity\EntityDamageByBlockEvent;
use pocketmine\event\entity\EntityDamageEvent;
use pocketmine\math\AxisAlignedBB;
use pocketmine\math\Facing;
 
class Cactus extends Transparent{
    use AgeableTrait;
    use StaticSupportTrait;
 
    public const MAX_AGE = 15;
 
    public function hasEntityCollision() : bool{
        return true;
    }
 
    protected function recalculateCollisionBoxes() : array{
        $shrinkSize = 1 / 16;
        return [AxisAlignedBB::one()->contract($shrinkSize, 0, $shrinkSize)->trim(Facing::UP, $shrinkSize)];
    }
 
    public function getSupportType(int $facing) : SupportType{
        return SupportType::NONE;
    }
 
    public function onEntityInside(Entity $entity) : bool{
        $ev = new EntityDamageByBlockEvent($this, $entity, EntityDamageEvent::CAUSE_CONTACT, 1);
        $entity->attack($ev);
        return true;
    }
 
    private function canBeSupportedAt(Block $block) : bool{
        $supportBlock = $block->getSide(Facing::DOWN);
        if(!$supportBlock->hasSameTypeId($this) && !$supportBlock->hasTypeTag(BlockTypeTags::SAND)){
            return false;
        }
        foreach(Facing::HORIZONTAL as $side){
            if($block->getSide($side)->isSolid()){
                return false;
            }
        }
 
        return true;
    }
 
    public function ticksRandomly() : bool{
        return true;
    }
 
    public function onRandomTick() : void{
        if(!$this->getSide(Facing::DOWN)->hasSameTypeId($this)){
            $world = $this->position->getWorld();
            if($this->age === self::MAX_AGE){
                for($y = 1; $y < 3; ++$y){
                    if(!$world->isInWorld($this->position->x, $this->position->y + $y, $this->position->z)){
                        break;
                    }
                    $b = $world->getBlockAt($this->position->x, $this->position->y + $y, $this->position->z);
                    if($b->getTypeId() === BlockTypeIds::AIR){
                        BlockEventHelper::grow($b, VanillaBlocks::CACTUS(), null);
                    }else{
                        break;
                    }
                }
                $this->age = 0;
                $world->setBlock($this->position, $this, update: false);
            }else{
                ++$this->age;
                $world->setBlock($this->position, $this, update: false);
            }
        }
    }
}