Age blocks logic moved into dedicated trait (#5962)

src/block/utils/AgeableTrait.php

@@ -0,0 +1,53 @@
+<?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 pocketmine\data\runtime\RuntimeDataDescriber;
+use function ceil;
+use function log;
+
+/**
+ * This trait is used for blocks that have an age property.
+ * Need to add to the block the constant MAX_AGE.
+ */
+trait AgeableTrait{
+	protected int $age = 0;
+
+	protected function describeBlockOnlyState(RuntimeDataDescriber $w) : void{
+		$w->boundedInt((int) ceil(log(self::MAX_AGE, 2)), 0, self::MAX_AGE, $this->age);
+	}
+
+	public function getAge() : int{ return $this->age; }
+
+	/**
+	 * @return $this
+	 */
+	public function setAge(int $age) : self{
+		if($age < 0 || $age > self::MAX_AGE){
+			throw new \InvalidArgumentException("Age must be in range 0 ... " . self::MAX_AGE);
+		}
+		$this->age = $age;
+		return $this;
+	}
+}