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https://github.com/pmmp/PocketMine-MP.git
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107 lines
2.5 KiB
PHP
107 lines
2.5 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\item;
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use pocketmine\item\enchantment\Enchantment;
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use pocketmine\nbt\tag\ByteTag;
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abstract class Durable extends Item{
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/**
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* Returns whether this item will take damage when used.
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* @return bool
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*/
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public function isUnbreakable() : bool{
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return $this->getNamedTag()->getByte("Unbreakable", 0) !== 0;
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}
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/**
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* Sets whether the item will take damage when used.
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* @param bool $value
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*/
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public function setUnbreakable(bool $value = true){
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$this->setNamedTagEntry(new ByteTag("Unbreakable", $value ? 1 : 0));
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}
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/**
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* Applies damage to the item.
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* @param int $amount
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*
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* @return bool if any damage was applied to the item
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*/
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public function applyDamage(int $amount) : bool{
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if($this->isUnbreakable() or $this->isBroken()){
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return false;
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}
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$amount -= $this->getUnbreakingDamageReduction($amount);
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$this->meta = min($this->meta + $amount, $this->getMaxDurability());
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if($this->isBroken()){
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$this->onBroken();
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}
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return true;
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}
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protected function getUnbreakingDamageReduction(int $amount) : int{
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if(($unbreakingLevel = $this->getEnchantmentLevel(Enchantment::UNBREAKING)) > 0){
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$negated = 0;
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$chance = 1 / ($unbreakingLevel + 1);
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for($i = 0; $i < $amount; ++$i){
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if(lcg_value() > $chance){
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$negated++;
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}
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}
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return $negated;
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}
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return 0;
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}
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/**
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* Called when the item's damage exceeds its maximum durability.
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*/
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protected function onBroken() : void{
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$this->pop();
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}
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/**
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* Returns the maximum amount of damage this item can take before it breaks.
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*
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* @return int
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*/
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abstract public function getMaxDurability() : int;
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/**
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* Returns whether the item is broken.
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* @return bool
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*/
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public function isBroken() : bool{
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return $this->meta >= $this->getMaxDurability();
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}
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}
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