Armor.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\item;
 
use pocketmine\color\Color;
use pocketmine\event\entity\EntityDamageEvent;
use pocketmine\inventory\ArmorInventory;
use pocketmine\item\enchantment\ProtectionEnchantment;
use pocketmine\item\enchantment\VanillaEnchantments;
use pocketmine\math\Vector3;
use pocketmine\nbt\tag\CompoundTag;
use pocketmine\nbt\tag\IntTag;
use pocketmine\player\Player;
use pocketmine\utils\Binary;
use function lcg_value;
use function mt_rand;
 
class Armor extends Durable{
 
    public const TAG_CUSTOM_COLOR = "customColor"; //TAG_Int
 
    private ArmorTypeInfo $armorInfo;
 
    protected ?Color $customColor = null;
 
    public function __construct(ItemIdentifier $identifier, string $name, ArmorTypeInfo $info, array $enchantmentTags = []){
        parent::__construct($identifier, $name, $enchantmentTags);
        $this->armorInfo = $info;
    }
 
    public function getMaxDurability() : int{
        return $this->armorInfo->getMaxDurability();
    }
 
    public function getDefensePoints() : int{
        return $this->armorInfo->getDefensePoints();
    }
 
    public function getArmorSlot() : int{
        return $this->armorInfo->getArmorSlot();
    }
 
    public function getMaxStackSize() : int{
        return 1;
    }
 
    public function isFireProof() : bool{
        return $this->armorInfo->isFireProof();
    }
 
    public function getMaterial() : ArmorMaterial{
        return $this->armorInfo->getMaterial();
    }
 
    public function getEnchantability() : int{
        return $this->armorInfo->getMaterial()->getEnchantability();
    }
 
    public function getCustomColor() : ?Color{
        return $this->customColor;
    }
 
    public function setCustomColor(Color $color) : self{
        $this->customColor = $color;
        return $this;
    }
 
    public function clearCustomColor() : self{
        $this->customColor = null;
        return $this;
    }
 
    public function getEnchantmentProtectionFactor(EntityDamageEvent $event) : int{
        $epf = 0;
 
        foreach($this->getEnchantments() as $enchantment){
            $type = $enchantment->getType();
            if($type instanceof ProtectionEnchantment && $type->isApplicable($event)){
                $epf += $type->getProtectionFactor($enchantment->getLevel());
            }
        }
 
        return $epf;
    }
 
    protected function getUnbreakingDamageReduction(int $amount) : int{
        if(($unbreakingLevel = $this->getEnchantmentLevel(VanillaEnchantments::UNBREAKING())) > 0){
            $negated = 0;
 
            $chance = 1 / ($unbreakingLevel + 1);
            for($i = 0; $i < $amount; ++$i){
                if(mt_rand(1, 100) > 60 && lcg_value() > $chance){ //unbreaking only applies to armor 40% of the time at best
                    $negated++;
                }
            }
 
            return $negated;
        }
 
        return 0;
    }
 
    public function onClickAir(Player $player, Vector3 $directionVector, array &$returnedItems) : ItemUseResult{
        $existing = $player->getArmorInventory()->getItem($this->getArmorSlot());
        $thisCopy = clone $this;
        $new = $thisCopy->pop();
        $player->getArmorInventory()->setItem($this->getArmorSlot(), $new);
        $player->getInventory()->setItemInHand($existing);
        $sound = $new->getMaterial()->getEquipSound();
        if($sound !== null){
            $player->broadcastSound($sound);
        }
        if(!$thisCopy->isNull()){
            //if the stack size was bigger than 1 (usually won't happen, but might be caused by plugins)
            $returnedItems[] = $thisCopy;
        }
        return ItemUseResult::SUCCESS;
    }
 
    protected function deserializeCompoundTag(CompoundTag $tag) : void{
        parent::deserializeCompoundTag($tag);
        if(($colorTag = $tag->getTag(self::TAG_CUSTOM_COLOR)) instanceof IntTag){
            $this->customColor = Color::fromARGB(Binary::unsignInt($colorTag->getValue()));
        }else{
            $this->customColor = null;
        }
    }
 
    protected function serializeCompoundTag(CompoundTag $tag) : void{
        parent::serializeCompoundTag($tag);
        $this->customColor !== null ?
            $tag->setInt(self::TAG_CUSTOM_COLOR, Binary::signInt($this->customColor->toARGB())) :
            $tag->removeTag(self::TAG_CUSTOM_COLOR);
    }
}