Refactored tool hierarchy

src/pocketmine/item/TieredTool.php

@@ -0,0 +1,76 @@
+<?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;
+
+abstract class TieredTool extends Tool{
+	public const TIER_WOODEN = 1;
+	public const TIER_GOLD = 2;
+	public const TIER_STONE = 3;
+	public const TIER_IRON = 4;
+	public const TIER_DIAMOND = 5;
+
+	/** @var int */
+	protected $tier;
+
+	public function __construct(int $id, int $meta, string $name, int $tier){
+		parent::__construct($id, $meta, $name);
+		$this->tier = $tier;
+	}
+
+	public function getMaxDurability(){
+		return self::getDurabilityFromTier($this->tier);
+	}
+
+	public static function getDurabilityFromTier(int $tier) : int{
+		static $levels = [
+			self::TIER_GOLD => 33,
+			self::TIER_WOODEN => 60,
+			self::TIER_STONE => 132,
+			self::TIER_IRON => 251,
+			self::TIER_DIAMOND => 1562
+		];
+
+		if(!isset($levels[$tier])){
+			throw new \InvalidArgumentException("Unknown tier '$tier'");
+		}
+
+		return $levels[$tier];
+	}
+
+	protected static function getBaseDamageFromTier(int $tier) : int{
+		static $levels = [
+			self::TIER_WOODEN => 5,
+			self::TIER_GOLD => 5,
+			self::TIER_STONE => 6,
+			self::TIER_IRON => 7,
+			self::TIER_DIAMOND => 8
+		];
+
+		if(!isset($levels[$tier])){
+			throw new \InvalidArgumentException("Unknown tier '$tier'");
+		}
+
+		return $levels[$tier];
+	}
+}