Added SignLikeRotationTrait

src/block/utils/SignLikeRotationTrait.php

@@ -0,0 +1,46 @@
+<?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\utils;
+
+use function floor;
+
+trait SignLikeRotationTrait{
+	/** @var int */
+	private $rotation = 0;
+
+	public function getRotation() : int{ return $this->rotation; }
+
+	/** @return $this */
+	public function setRotation(int $rotation) : self{
+		if($rotation < 0 || $rotation > 15){
+			throw new \InvalidArgumentException("Rotation must be in range 0-15");
+		}
+		$this->rotation = $rotation;
+		return $this;
+	}
+
+	private static function getRotationFromYaw(float $yaw) : int{
+		return ((int) floor((($yaw + 180) * 16 / 360) + 0.5)) & 0xf;
+	}
+}