Separate dye colour ID management from DyeColor enum

src/data/bedrock/DyeColorIdMap.php

@@ -0,0 +1,83 @@
+<?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\data\bedrock;
+
+use pocketmine\block\utils\DyeColor;
+use pocketmine\utils\SingletonTrait;
+
+final class DyeColorIdMap{
+	use SingletonTrait;
+
+	/**
+	 * @var DyeColor[]
+	 * @phpstan-var array<int, DyeColor>
+	 */
+	private $idToEnum = [];
+
+	/**
+	 * @var int[]
+	 * @phpstan-var array<int, int>
+	 */
+	private $enumToId = [];
+
+	private function __construct(){
+		$this->register(0, DyeColor::WHITE());
+		$this->register(1, DyeColor::ORANGE());
+		$this->register(2, DyeColor::MAGENTA());
+		$this->register(3, DyeColor::LIGHT_BLUE());
+		$this->register(4, DyeColor::YELLOW());
+		$this->register(5, DyeColor::LIME());
+		$this->register(6, DyeColor::PINK());
+		$this->register(7, DyeColor::GRAY());
+		$this->register(8, DyeColor::LIGHT_GRAY());
+		$this->register(9, DyeColor::CYAN());
+		$this->register(10, DyeColor::PURPLE());
+		$this->register(11, DyeColor::BLUE());
+		$this->register(12, DyeColor::BROWN());
+		$this->register(13, DyeColor::GREEN());
+		$this->register(14, DyeColor::RED());
+		$this->register(15, DyeColor::BLACK());
+	}
+
+	private function register(int $id, DyeColor $color) : void{
+		$this->idToEnum[$id] = $color;
+		$this->enumToId[$color->id()] = $id;
+	}
+
+	public function toId(DyeColor $color) : int{
+		return $this->enumToId[$color->id()]; //TODO: is it possible for this to be missing?
+	}
+
+	public function toInvertedId(DyeColor $color) : int{
+		return ~$this->toId($color) & 0xf;
+	}
+
+	public function fromId(int $id) : DyeColor{
+		return $this->idToEnum[$id]; //TODO: this might not be present (e.g. corrupted data)
+	}
+
+	public function fromInvertedId(int $id) : DyeColor{
+		return $this->fromId(~$id & 0xf);
+	}
+}