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72 lines
2.4 KiB
PHP
72 lines
2.4 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\enchantment;
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use pocketmine\event\entity\EntityDamageEvent;
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use pocketmine\lang\Translatable;
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use function array_flip;
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use function floor;
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class ProtectionEnchantment extends Enchantment{
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/** @var float */
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protected $typeModifier;
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/** @var int[]|null */
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protected $applicableDamageTypes = null;
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/**
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* ProtectionEnchantment constructor.
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*
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* @param int[]|null $applicableDamageTypes EntityDamageEvent::CAUSE_* constants which this enchantment type applies to, or null if it applies to all types of damage.
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*/
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public function __construct(Translatable|string $name, int $rarity, int $primaryItemFlags, int $secondaryItemFlags, int $maxLevel, float $typeModifier, ?array $applicableDamageTypes){
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parent::__construct($name, $rarity, $primaryItemFlags, $secondaryItemFlags, $maxLevel);
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$this->typeModifier = $typeModifier;
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if($applicableDamageTypes !== null){
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$this->applicableDamageTypes = array_flip($applicableDamageTypes);
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}
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}
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/**
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* Returns the multiplier by which this enchantment type's EPF increases with each enchantment level.
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*/
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public function getTypeModifier() : float{
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return $this->typeModifier;
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}
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/**
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* Returns the base EPF this enchantment type offers for the given enchantment level.
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*/
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public function getProtectionFactor(int $level) : int{
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return (int) floor((6 + $level ** 2) * $this->typeModifier / 3);
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}
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/**
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* Returns whether this enchantment type offers protection from the specified damage source's cause.
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*/
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public function isApplicable(EntityDamageEvent $event) : bool{
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return $this->applicableDamageTypes === null or isset($this->applicableDamageTypes[$event->getCause()]);
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}
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}
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