Added API method Block->getItemId(), cleaned up excess wooden stairs and fence-gate classes, added more wooden door types

src/pocketmine/block/WoodenStairs.php

@@ -0,0 +1,48 @@
+<?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\block;
+
+use pocketmine\item\Item;
+use pocketmine\item\Tool;
+
+class WoodenStairs extends Stair{
+
+	public function getHardness(){
+		return 2;
+	}
+
+	public function getResistance(){
+		return 15;
+	}
+
+	public function getToolType(){
+		return Tool::TYPE_AXE;
+	}
+
+	public function getDrops(Item $item){
+		return [
+			[$this->id, 0, 1],
+		];
+	}
+}