Sugarcane.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\item\Fertilizer;
use pocketmine\item\Item;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
use pocketmine\world\Position;
 
class Sugarcane extends Flowable{
    use AgeableTrait;
    use StaticSupportTrait {
        onNearbyBlockChange as onSupportBlockChange;
    }
 
    public const MAX_AGE = 15;
 
    private function seekToBottom() : Position{
        $world = $this->position->getWorld();
        $bottom = $this->position;
        while(($next = $world->getBlock($bottom->down()))->hasSameTypeId($this)){
            $bottom = $next->position;
        }
        return $bottom;
    }
 
    private function grow(Position $pos, ?Player $player = null) : bool{
        $grew = false;
        $world = $pos->getWorld();
        for($y = 1; $y < 3; ++$y){
            if(!$world->isInWorld($pos->x, $pos->y + $y, $pos->z)){
                break;
            }
            $b = $world->getBlockAt($pos->x, $pos->y + $y, $pos->z);
            if($b->getTypeId() === BlockTypeIds::AIR){
                if(BlockEventHelper::grow($b, VanillaBlocks::SUGARCANE(), $player)){
                    $grew = true;
                }else{
                    break;
                }
            }elseif(!$b->hasSameTypeId($this)){
                break;
            }
        }
        $this->age = 0;
        $world->setBlock($pos, $this);
        return $grew;
    }
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        if($item instanceof Fertilizer){
            if($this->grow($this->seekToBottom(), $player)){
                $item->pop();
            }
 
            return true;
        }
 
        return false;
    }
 
    private function canBeSupportedAt(Block $block) : bool{
        $supportBlock = $block->getSide(Facing::DOWN);
        return $supportBlock->hasSameTypeId($this) ||
            $supportBlock->hasTypeTag(BlockTypeTags::MUD) ||
            $supportBlock->hasTypeTag(BlockTypeTags::DIRT) ||
            $supportBlock->hasTypeTag(BlockTypeTags::SAND);
    }
 
    public function ticksRandomly() : bool{
        return true;
    }
 
    public function onRandomTick() : void{
        $down = $this->getSide(Facing::DOWN);
        if(!$down->hasSameTypeId($this)){
            if(!$this->hasNearbyWater($down)){
                $this->position->getWorld()->useBreakOn($this->position, createParticles: true);
                return;
            }
 
            if($this->age === self::MAX_AGE){
                $this->grow($this->position);
            }else{
                ++$this->age;
                $this->position->getWorld()->setBlock($this->position, $this);
            }
        }
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        $down = $blockReplace->getSide(Facing::DOWN);
        if($down->hasSameTypeId($this)){
            return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
        }
 
        //support criteria are checked by FixedSupportTrait, but this part applies to placement only
        foreach(Facing::HORIZONTAL as $side){
            $sideBlock = $down->getSide($side);
            if($sideBlock instanceof Water || $sideBlock instanceof FrostedIce){
                return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
            }
        }
 
        return false;
    }
 
    private function hasNearbyWater(Block $down) : bool{
        foreach($down->getHorizontalSides() as $sideBlock){
            $blockId = $sideBlock->getTypeId();
            if($blockId === BlockTypeIds::WATER || $blockId === BlockTypeIds::FROSTED_ICE){
                return true;
            }
        }
        return false;
    }
 
    public function onNearbyBlockChange() : void{
        $down = $this->getSide(Facing::DOWN);
        if(!$down->hasSameTypeId($this) && !$this->hasNearbyWater($down)){
            $this->position->getWorld()->useBreakOn($this->position, createParticles: true);
        }else{
            $this->onSupportBlockChange();
        }
    }
}