Removed pocketmine subdirectory, map PSR-4 style

src/item/Durable.php

@@ -0,0 +1,144 @@
+<?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\item\enchantment\Enchantment;
+use pocketmine\nbt\tag\CompoundTag;
+use function lcg_value;
+use function min;
+
+abstract class Durable extends Item{
+
+	/** @var int */
+	protected $damage = 0;
+	/** @var bool */
+	private $unbreakable = false;
+
+	public function getMeta() : int{
+		return $this->damage;
+	}
+
+	/**
+	 * Returns whether this item will take damage when used.
+	 * @return bool
+	 */
+	public function isUnbreakable() : bool{
+		return $this->unbreakable;
+	}
+
+	/**
+	 * Sets whether the item will take damage when used.
+	 *
+	 * @param bool $value
+	 *
+	 * @return $this
+	 */
+	public function setUnbreakable(bool $value = true) : self{
+		$this->unbreakable = $value;
+		return $this;
+	}
+
+	/**
+	 * Applies damage to the item.
+	 *
+	 * @param int $amount
+	 *
+	 * @return bool if any damage was applied to the item
+	 */
+	public function applyDamage(int $amount) : bool{
+		if($this->isUnbreakable() or $this->isBroken()){
+			return false;
+		}
+
+		$amount -= $this->getUnbreakingDamageReduction($amount);
+
+		$this->damage = min($this->damage + $amount, $this->getMaxDurability());
+		if($this->isBroken()){
+			$this->onBroken();
+		}
+
+		return true;
+	}
+
+	public function getDamage() : int{
+		return $this->damage;
+	}
+
+	public function setDamage(int $damage) : Item{
+		if($damage < 0 or $damage > $this->getMaxDurability()){
+			throw new \InvalidArgumentException("Damage must be in range 0 - " . $this->getMaxDurability());
+		}
+		$this->damage = $damage;
+		return $this;
+	}
+
+	protected function getUnbreakingDamageReduction(int $amount) : int{
+		if(($unbreakingLevel = $this->getEnchantmentLevel(Enchantment::UNBREAKING())) > 0){
+			$negated = 0;
+
+			$chance = 1 / ($unbreakingLevel + 1);
+			for($i = 0; $i < $amount; ++$i){
+				if(lcg_value() > $chance){
+					$negated++;
+				}
+			}
+
+			return $negated;
+		}
+
+		return 0;
+	}
+
+	/**
+	 * Called when the item's damage exceeds its maximum durability.
+	 */
+	protected function onBroken() : void{
+		$this->pop();
+	}
+
+	/**
+	 * Returns the maximum amount of damage this item can take before it breaks.
+	 *
+	 * @return int
+	 */
+	abstract public function getMaxDurability() : int;
+
+	/**
+	 * Returns whether the item is broken.
+	 * @return bool
+	 */
+	public function isBroken() : bool{
+		return $this->damage >= $this->getMaxDurability();
+	}
+
+	protected function deserializeCompoundTag(CompoundTag $tag) : void{
+		parent::deserializeCompoundTag($tag);
+		$this->unbreakable = $tag->getByte("Unbreakable", 0) !== 0;
+	}
+
+	protected function serializeCompoundTag(CompoundTag $tag) : void{
+		parent::serializeCompoundTag($tag);
+		$this->unbreakable ? $tag->setByte("Unbreakable", 1) : $tag->removeTag("Unbreakable");
+	}
+}