Grass.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\BlockEventHelper;
use pocketmine\block\utils\DirtType;
use pocketmine\item\Fertilizer;
use pocketmine\item\Hoe;
use pocketmine\item\Item;
use pocketmine\item\Shovel;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\utils\Random;
use pocketmine\world\generator\object\TallGrass as TallGrassObject;
use pocketmine\world\sound\ItemUseOnBlockSound;
use function mt_rand;
 
class Grass extends Opaque{
 
    public function getDropsForCompatibleTool(Item $item) : array{
        return [
            VanillaBlocks::DIRT()->asItem()
        ];
    }
 
    public function isAffectedBySilkTouch() : bool{
        return true;
    }
 
    public function ticksRandomly() : bool{
        return true;
    }
 
    public function onRandomTick() : void{
        $world = $this->position->getWorld();
        $lightAbove = $world->getFullLightAt($this->position->x, $this->position->y + 1, $this->position->z);
        if($lightAbove < 4 && $world->getBlockAt($this->position->x, $this->position->y + 1, $this->position->z)->getLightFilter() >= 2){
            //grass dies
            BlockEventHelper::spread($this, VanillaBlocks::DIRT(), $this);
        }elseif($lightAbove >= 9){
            //try grass spread
            for($i = 0; $i < 4; ++$i){
                $x = mt_rand($this->position->x - 1, $this->position->x + 1);
                $y = mt_rand($this->position->y - 3, $this->position->y + 1);
                $z = mt_rand($this->position->z - 1, $this->position->z + 1);
 
                $b = $world->getBlockAt($x, $y, $z);
                if(
                    !($b instanceof Dirt) ||
                    $b->getDirtType() !== DirtType::NORMAL ||
                    $world->getFullLightAt($x, $y + 1, $z) < 4 ||
                    $world->getBlockAt($x, $y + 1, $z)->getLightFilter() >= 2
                ){
                    continue;
                }
 
                BlockEventHelper::spread($b, VanillaBlocks::GRASS(), $this);
            }
        }
    }
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        if($this->getSide(Facing::UP)->getTypeId() !== BlockTypeIds::AIR){
            return false;
        }
        $world = $this->position->getWorld();
        if($item instanceof Fertilizer){
            $item->pop();
            TallGrassObject::growGrass($world, $this->position, new Random(mt_rand()), 8, 2);
 
            return true;
        }
        if($face !== Facing::DOWN){
            if($item instanceof Hoe){
                $item->applyDamage(1);
                $newBlock = VanillaBlocks::FARMLAND();
                $world->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
                $world->setBlock($this->position, $newBlock);
 
                return true;
            }elseif($item instanceof Shovel){
                $item->applyDamage(1);
                $newBlock = VanillaBlocks::GRASS_PATH();
                $world->addSound($this->position->add(0.5, 0.5, 0.5), new ItemUseOnBlockSound($newBlock));
                $world->setBlock($this->position, $newBlock);
 
                return true;
            }
        }
 
        return false;
    }
}