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https://github.com/pmmp/PocketMine-MP.git
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5899f2fc1d
this switches from a 'can be supported by' concept to a 'can stay at this position' paradigm, which requires way less boilerplate code. there may be further improvements we can make from here, such as adding traits, but this is a good first step.
122 lines
3.6 KiB
PHP
122 lines
3.6 KiB
PHP
<?php
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/*
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*
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* ____ _ _ __ __ _ __ __ ____
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* | _ \ ___ ___| | _____| |_| \/ (_)_ __ ___ | \/ | _ \
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* | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
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* | __/ (_) | (__| < __/ |_| | | | | | | | __/_____| | | | __/
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* |_| \___/ \___|_|\_\___|\__|_| |_|_|_| |_|\___| |_| |_|_|
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* @author PocketMine Team
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* @link http://www.pocketmine.net/
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*
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*
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*/
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declare(strict_types=1);
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namespace pocketmine\block;
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use pocketmine\block\utils\Fallable;
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use pocketmine\block\utils\FallableTrait;
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use pocketmine\block\utils\SupportType;
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use pocketmine\data\runtime\RuntimeDataDescriber;
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use pocketmine\event\block\BlockMeltEvent;
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use pocketmine\item\Item;
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use pocketmine\item\VanillaItems;
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use pocketmine\math\AxisAlignedBB;
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use pocketmine\math\Facing;
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use pocketmine\math\Vector3;
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use pocketmine\player\Player;
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use pocketmine\world\BlockTransaction;
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use function floor;
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use function max;
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class SnowLayer extends Flowable implements Fallable{
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use FallableTrait;
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public const MIN_LAYERS = 1;
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public const MAX_LAYERS = 8;
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protected int $layers = self::MIN_LAYERS;
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protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
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$w->boundedInt(3, self::MIN_LAYERS, self::MAX_LAYERS, $this->layers);
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}
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public function getLayers() : int{ return $this->layers; }
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/** @return $this */
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public function setLayers(int $layers) : self{
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if($layers < self::MIN_LAYERS || $layers > self::MAX_LAYERS){
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throw new \InvalidArgumentException("Layers must be in range " . self::MIN_LAYERS . " ... " . self::MAX_LAYERS);
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}
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$this->layers = $layers;
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return $this;
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}
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public function canBeReplaced() : bool{
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return $this->layers < self::MAX_LAYERS;
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}
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/**
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* @return AxisAlignedBB[]
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*/
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protected function recalculateCollisionBoxes() : array{
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//TODO: this zero-height BB is intended to stay in lockstep with a MCPE bug
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return [AxisAlignedBB::one()->trim(Facing::UP, $this->layers >= 4 ? 0.5 : 1)];
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}
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public function getSupportType(int $facing) : SupportType{
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if(!$this->canBeReplaced()){
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return SupportType::FULL();
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}
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return SupportType::NONE();
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}
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private function canBeSupportedAt(Block $block) : bool{
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return $block->getAdjacentSupportType(Facing::DOWN)->equals(SupportType::FULL());
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}
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public function place(BlockTransaction $tx, Item $item, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector, ?Player $player = null) : bool{
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if($blockReplace instanceof SnowLayer){
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if($blockReplace->layers >= self::MAX_LAYERS){
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return false;
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}
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$this->layers = $blockReplace->layers + 1;
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}
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if($this->canBeSupportedAt($blockReplace)){
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return parent::place($tx, $item, $blockReplace, $blockClicked, $face, $clickVector, $player);
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}
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return false;
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}
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public function ticksRandomly() : bool{
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return true;
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}
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public function onRandomTick() : void{
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$world = $this->position->getWorld();
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if($world->getBlockLightAt($this->position->x, $this->position->y, $this->position->z) >= 12){
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$ev = new BlockMeltEvent($this, VanillaBlocks::AIR());
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$ev->call();
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if(!$ev->isCancelled()){
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$world->setBlock($this->position, $ev->getNewState());
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}
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}
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}
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public function getDropsForCompatibleTool(Item $item) : array{
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return [
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VanillaItems::SNOWBALL()->setCount(max(1, (int) floor($this->layers / 2)))
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];
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}
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}
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