Vine.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\data\runtime\RuntimeDataDescriber;
use pocketmine\entity\Entity;
use pocketmine\item\Item;
use pocketmine\math\Axis;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
use function array_intersect_key;
use function count;
 
class Vine extends Flowable{
 
    protected array $faces = [];
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->horizontalFacingFlags($this->faces);
    }
 
    public function getFaces() : array{ return $this->faces; }
 
    public function hasFace(int $face) : bool{
        return isset($this->faces[$face]);
    }
 
    public function setFaces(array $faces) : self{
        $uniqueFaces = [];
        foreach($faces as $face){
            if($face !== Facing::NORTH && $face !== Facing::SOUTH && $face !== Facing::WEST && $face !== Facing::EAST){
                throw new \InvalidArgumentException("Facing can only be north, east, south or west");
            }
            $uniqueFaces[$face] = $face;
        }
        $this->faces = $uniqueFaces;
        return $this;
    }
 
    public function setFace(int $face, bool $value) : self{
        if($face !== Facing::NORTH && $face !== Facing::SOUTH && $face !== Facing::WEST && $face !== Facing::EAST){
            throw new \InvalidArgumentException("Facing can only be north, east, south or west");
        }
        if($value){
            $this->faces[$face] = $face;
        }else{
            unset($this->faces[$face]);
        }
        return $this;
    }
 
    public function hasEntityCollision() : bool{
        return true;
    }
 
    public function canClimb() : bool{
        return true;
    }
 
    public function canBeReplaced() : bool{
        return true;
    }
 
    public function onEntityInside(Entity $entity) : bool{
        $entity->resetFallDistance();
        return true;
    }
 
    protected function recalculateCollisionBoxes() : array{
        return [];
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        if(!$blockReplace->getSide(Facing::opposite($face))->isFullCube() || Facing::axis($face) === Axis::Y){
            return false;
        }
 
        $this->faces = $blockReplace instanceof Vine ? $blockReplace->faces : [];
        $this->faces[Facing::opposite($face)] = Facing::opposite($face);
 
        return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
    }
 
    public function onNearbyBlockChange() : void{
        $changed = false;
 
        $up = $this->getSide(Facing::UP);
        //check which faces have corresponding vines in the block above
        $supportedFaces = $up instanceof Vine ? array_intersect_key($this->faces, $up->faces) : [];
 
        foreach($this->faces as $face){
            if(!isset($supportedFaces[$face]) && !$this->getSide($face)->isSolid()){
                unset($this->faces[$face]);
                $changed = true;
            }
        }
 
        if($changed){
            $world = $this->position->getWorld();
            if(count($this->faces) === 0){
                $world->useBreakOn($this->position);
            }else{
                $world->setBlock($this->position, $this);
            }
        }
    }
 
    public function ticksRandomly() : bool{
        return true;
    }
 
    public function onRandomTick() : void{
        //TODO: vine growth
    }
 
    public function getDrops(Item $item) : array{
        if(($item->getBlockToolType() & BlockToolType::SHEARS) !== 0){
            return $this->getDropsForCompatibleTool($item);
        }
 
        return [];
    }
 
    public function getFlameEncouragement() : int{
        return 15;
    }
 
    public function getFlammability() : int{
        return 100;
    }
}