block/Bamboo.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\StaticSupportTrait;
use pocketmine\block\utils\SupportType;
use pocketmine\data\runtime\RuntimeDataDescriber;
use pocketmine\event\block\StructureGrowEvent;
use pocketmine\item\Bamboo as ItemBamboo;
use pocketmine\item\Fertilizer;
use pocketmine\item\Item;
use pocketmine\item\VanillaItems;
use pocketmine\math\AxisAlignedBB;
use pocketmine\math\Facing;
use pocketmine\math\Vector3;
use pocketmine\player\Player;
use pocketmine\world\BlockTransaction;
use function count;
use function gmp_add;
use function gmp_and;
use function gmp_intval;
use function gmp_mul;
use function gmp_xor;
use function min;
use function mt_rand;
use const PHP_INT_MAX;
 
class Bamboo extends Transparent{
    use StaticSupportTrait;
 
    public const NO_LEAVES = 0;
    public const SMALL_LEAVES = 1;
    public const LARGE_LEAVES = 2;
 
    protected bool $thick = false; //age in PC, but this is 0/1
    protected bool $ready = false;
    protected int $leafSize = self::NO_LEAVES;
 
    protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
        $w->boundedIntAuto(self::NO_LEAVES, self::LARGE_LEAVES, $this->leafSize);
        $w->bool($this->thick);
        $w->bool($this->ready);
    }
 
    public function isThick() : bool{ return $this->thick; }
 
    public function setThick(bool $thick) : self{
        $this->thick = $thick;
        return $this;
    }
 
    public function isReady() : bool{ return $this->ready; }
 
    public function setReady(bool $ready) : self{
        $this->ready = $ready;
        return $this;
    }
 
    public function getLeafSize() : int{ return $this->leafSize; }
 
    public function setLeafSize(int $leafSize) : self{
        $this->leafSize = $leafSize;
        return $this;
    }
 
    protected function recalculateCollisionBoxes() : array{
        //this places the BB at the northwest corner, not the center
        $inset = 1 - (($this->thick ? 3 : 2) / 16);
        return [AxisAlignedBB::one()->trim(Facing::SOUTH, $inset)->trim(Facing::EAST, $inset)];
    }
 
    public function getSupportType(int $facing) : SupportType{
        return SupportType::NONE;
    }
 
    private static function getOffsetSeed(int $x, int $y, int $z) : int{
        $p1 = gmp_mul($z, 0x6ebfff5);
        $p2 = gmp_mul($x, 0x2fc20f);
        $p3 = $y;
 
        $xord = gmp_xor(gmp_xor($p1, $p2), $p3);
 
        $fullResult = gmp_mul(gmp_add(gmp_mul($xord, 0x285b825), 0xb), $xord);
        return gmp_intval(gmp_and($fullResult, 0xffffffff));
    }
 
    private static function getMaxHeight(int $x, int $z) : int{
        return 12 + (self::getOffsetSeed($x, 0, $z) % 5);
    }
 
    public function getModelPositionOffset() : ?Vector3{
        $seed = self::getOffsetSeed($this->position->getFloorX(), 0, $this->position->getFloorZ());
        $retX = (($seed % 12) + 1) / 16;
        $retZ = ((($seed >> 8) % 12) + 1) / 16;
        return new Vector3($retX, 0, $retZ);
    }
 
    private function canBeSupportedAt(Block $block) : bool{
        $supportBlock = $block->getSide(Facing::DOWN);
        return
            $supportBlock->hasSameTypeId($this) ||
            $supportBlock->getTypeId() === BlockTypeIds::GRAVEL ||
            $supportBlock->hasTypeTag(BlockTypeTags::DIRT) ||
            $supportBlock->hasTypeTag(BlockTypeTags::MUD) ||
            $supportBlock->hasTypeTag(BlockTypeTags::SAND);
    }
 
    private function seekToTop() : Bamboo{
        $world = $this->position->getWorld();
        $top = $this;
        while(($next = $world->getBlock($top->position->up())) instanceof Bamboo && $next->hasSameTypeId($this)){
            $top = $next;
        }
        return $top;
    }
 
    public function onInteract(Item $item, int $face, Vector3 $clickVector, ?Player $player = null, array &$returnedItems = []) : bool{
        if($item instanceof Fertilizer){
            $top = $this->seekToTop();
            if($top->grow(self::getMaxHeight($top->position->getFloorX(), $top->position->getFloorZ()), mt_rand(1, 2), $player)){
                $item->pop();
                return true;
            }
        }elseif($item instanceof ItemBamboo){
            if($this->seekToTop()->grow(PHP_INT_MAX, 1, $player)){
                $item->pop();
                return true;
            }
        }
        return false;
    }
 
    private function grow(int $maxHeight, int $growAmount, ?Player $player) : bool{
        $world = $this->position->getWorld();
        if(!$world->getBlock($this->position->up())->canBeReplaced()){
            return false;
        }
 
        $height = 1;
        while($world->getBlock($this->position->subtract(0, $height, 0))->hasSameTypeId($this)){
            if(++$height >= $maxHeight){
                return false;
            }
        }
 
        $newHeight = $height + $growAmount;
 
        $stemBlock = (clone $this)->setReady(false)->setLeafSize(self::NO_LEAVES);
        if($newHeight >= 4 && !$stemBlock->thick){ //don't change it to false if height is less, because it might have been chopped
            $stemBlock = $stemBlock->setThick(true);
        }
        $smallLeavesBlock = (clone $stemBlock)->setLeafSize(self::SMALL_LEAVES);
        $bigLeavesBlock = (clone $stemBlock)->setLeafSize(self::LARGE_LEAVES);
 
        $newBlocks = [];
        if($newHeight === 2){
            $newBlocks[] = $smallLeavesBlock;
        }elseif($newHeight === 3){
            $newBlocks[] = $smallLeavesBlock;
            $newBlocks[] = $smallLeavesBlock;
        }elseif($newHeight === 4){
            $newBlocks[] = $bigLeavesBlock;
            $newBlocks[] = $smallLeavesBlock;
            $newBlocks[] = $stemBlock;
            $newBlocks[] = $stemBlock;
        }elseif($newHeight > 4){
            $newBlocks[] = $bigLeavesBlock;
            $newBlocks[] = $bigLeavesBlock;
            $newBlocks[] = $smallLeavesBlock;
            for($i = 0, $max = min($growAmount, $newHeight - count($newBlocks)); $i < $max; ++$i){
                $newBlocks[] = $stemBlock; //to replace the bottom blocks that currently have leaves
            }
        }
 
        $tx = new BlockTransaction($world);
        foreach($newBlocks as $idx => $newBlock){
            $tx->addBlock($this->position->subtract(0, $idx - $growAmount, 0), $newBlock);
        }
 
        $ev = new StructureGrowEvent($this, $tx, $player);
        $ev->call();
        if($ev->isCancelled()){
            return false;
        }
 
        return $tx->apply();
    }
 
    public function ticksRandomly() : bool{
        return true;
    }
 
    public function onRandomTick() : void{
        $world = $this->position->getWorld();
        if($this->ready){
            $this->ready = false;
            if($world->getFullLight($this->position) < 9 || !$this->grow(self::getMaxHeight($this->position->getFloorX(), $this->position->getFloorZ()), 1, null)){
                $world->setBlock($this->position, $this);
            }
        }elseif($world->getBlock($this->position->up())->canBeReplaced()){
            $this->ready = true;
            $world->setBlock($this->position, $this);
        }
    }
 
    public function asItem() : Item{
        return VanillaItems::BAMBOO();
    }
}