Removed pocketmine subdirectory, map PSR-4 style

src/world/generator/Generator.php

@@ -0,0 +1,82 @@
+<?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);
+
+/**
+ * Noise classes used in world generation
+ */
+namespace pocketmine\world\generator;
+
+use pocketmine\utils\Random;
+use pocketmine\utils\Utils;
+use pocketmine\world\ChunkManager;
+use function preg_match;
+
+abstract class Generator{
+
+	/**
+	 * Converts a string world seed into an integer for use by the generator.
+	 *
+	 * @param string $seed
+	 *
+	 * @return int|null
+	 */
+	public static function convertSeed(string $seed) : ?int{
+		if($seed === ""){ //empty seed should cause a random seed to be selected - can't use 0 here because 0 is a valid seed
+			$convertedSeed = null;
+		}elseif(preg_match('/^-?\d+$/', $seed) === 1){ //this avoids treating seeds like "404.4" as integer seeds
+			$convertedSeed = (int) $seed;
+		}else{
+			$convertedSeed = Utils::javaStringHash($seed);
+		}
+
+		return $convertedSeed;
+	}
+
+	/** @var ChunkManager */
+	protected $world;
+	/** @var int */
+	protected $seed;
+	/** @var array */
+	protected $options;
+
+	/** @var Random */
+	protected $random;
+
+	/**
+	 * @param ChunkManager $world
+	 * @param int          $seed
+	 * @param array        $options
+	 *
+	 * @throws InvalidGeneratorOptionsException
+	 */
+	public function __construct(ChunkManager $world, int $seed, array $options = []){
+		$this->world = $world;
+		$this->seed = $seed;
+		$this->options = $options;
+		$this->random = new Random($seed);
+	}
+
+	abstract public function generateChunk(int $chunkX, int $chunkZ) : void;
+
+	abstract public function populateChunk(int $chunkX, int $chunkZ) : void;
+}