GlowLichen.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\SupportType;
use pocketmine\data\runtime\RuntimeDataDescriber;
use pocketmine\item\Fertilizer;
use pocketmine\item\Item;
use pocketmine\math\AxisAlignedBB;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
use pocketmine\world\World;
use function array_key_first;
use function count;
use function shuffle;
 
class GlowLichen extends Transparent{
 
    protected array $faces = [];
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->facingFlags($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 $face){
            Facing::validate($face);
            $uniqueFaces[$face] = $face;
        }
        $this->faces = $uniqueFaces;
        return $this;
    }
 
    public function setFace(int $face, bool $value) : self{
        Facing::validate($face);
        if($value){
            $this->faces[$face] = $face;
        }else{
            unset($this->faces[$face]);
        }
        return $this;
    }
 
    public function getLightLevel() : int{
        return 7;
    }
 
    public function isSolid() : bool{
        return false;
    }
 
    protected function recalculateCollisionBoxes() : array{
        return [];
    }
 
    public function getSupportType(int $facing) : SupportType{
        return SupportType::NONE;
    }
 
    public function canBeReplaced() : bool{
        return true;
    }
 
    public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
        $this->faces = $blockReplace instanceof GlowLichen ? $blockReplace->faces : [];
        $availableFaces = $this->getAvailableFaces();
 
        if(count($availableFaces) === 0){
            return false;
        }
 
        $opposite = Facing::opposite($face);
        $placedFace = isset($availableFaces[$opposite]) ? $opposite : array_key_first($availableFaces);
        $this->faces[$placedFace] = $placedFace;
 
        return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
    }
 
    public function onNearbyBlockChange() : void{
        $changed = false;
 
        foreach($this->faces as $face){
            if($this->getAdjacentSupportType($face) !== SupportType::FULL){
                unset($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);
            }
        }
    }
 
    private function getSpreadBlock(Block $replace, int $spreadFace) : ?Block{
        if($replace instanceof self && $replace->hasSameTypeId($this)){
            if($replace->hasFace($spreadFace)){
                return null;
            }
            $result = $replace;
        }elseif($replace->getTypeId() === BlockTypeIds::AIR){
            $result = VanillaBlocks::GLOW_LICHEN();
        }else{
            //TODO: if this is a water block, generate a waterlogged block
            return null;
        }
        return $result->setFace($spreadFace, true);
    }
 
    private function spread(World $world, Vector3 $replacePos, int $spreadFace) : bool{
        $supportBlock = $world->getBlock($replacePos->getSide($spreadFace));
        $supportFace = Facing::opposite($spreadFace);
 
        if($supportBlock->getSupportType($supportFace) !== SupportType::FULL){
            return false;
        }
 
        $replacedBlock = $supportBlock->getSide($supportFace);
        $replacementBlock = $this->getSpreadBlock($replacedBlock, Facing::opposite($supportFace));
        if($replacementBlock === null){
            return false;
        }
 
        return BlockEventHelper::spread($replacedBlock, $replacementBlock, $this);
    }
 
    private static function getShuffledSpreadFaces(int $sourceFace) : \Generator{
        $skipAxis = Facing::axis($sourceFace);
 
        $faces = Facing::ALL;
        shuffle($faces);
        foreach($faces as $spreadFace){
            if(Facing::axis($spreadFace) !== $skipAxis){
                yield $spreadFace;
            }
        }
    }
 
    private function spreadAroundSupport(int $sourceFace) : bool{
        $world = $this->position->getWorld();
 
        $supportPos = $this->position->getSide($sourceFace);
        foreach(self::getShuffledSpreadFaces($sourceFace) as $spreadFace){
            $replacePos = $supportPos->getSide($spreadFace);
            if($this->spread($world, $replacePos, Facing::opposite($spreadFace))){
                return true;
            }
        }
 
        return false;
    }
 
    private function spreadAdjacentToSupport(int $sourceFace) : bool{
        $world = $this->position->getWorld();
 
        foreach(self::getShuffledSpreadFaces($sourceFace) as $spreadFace){
            $replacePos = $this->position->getSide($spreadFace);
            if($this->spread($world, $replacePos, $sourceFace)){
                return true;
            }
        }
        return false;
    }
 
    private function spreadWithinSelf(int $sourceFace) : bool{
        foreach(self::getShuffledSpreadFaces($sourceFace) as $spreadFace){
            if(!$this->hasFace($spreadFace) && $this->spread($this->position->getWorld(), $this->position, $spreadFace)){
                return true;
            }
        }
 
        return false;
    }
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        if($item instanceof Fertilizer && count($this->faces) > 0){
            $shuffledFaces = $this->faces;
            shuffle($shuffledFaces);
 
            $spreadMethods = [
                $this->spreadAroundSupport(...),
                $this->spreadAdjacentToSupport(...),
                $this->spreadWithinSelf(...),
            ];
            shuffle($spreadMethods);
 
            foreach($shuffledFaces as $sourceFace){
                foreach($spreadMethods as $spreadMethod){
                    if($spreadMethod($sourceFace)){
                        $item->pop();
                        break 2;
                    }
                }
            }
 
            return true;
        }
        return false;
    }
 
    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;
    }
 
    private function getAvailableFaces() : array{
        $faces = [];
        foreach(Facing::ALL as $face){
            if(!$this->hasFace($face) && $this->getAdjacentSupportType($face) === SupportType::FULL){
                $faces[$face] = $face;
            }
        }
        return $faces;
    }
}