Implemented coral blocks

there are some complications with coral plants due to the fact we're stuck with R12 worlds right now - and also coral fans are a major pain to implement due to how messed up the metadata is.

src/block/BlockFactory.php

@@ -141,6 +141,7 @@ class BlockFactory{
 
 		$this->register(new Cobweb(new BID(Ids::COBWEB), "Cobweb"));
 		$this->register(new CocoaBlock(new BID(Ids::COCOA), "Cocoa Block"));
+		$this->register(new CoralBlock(new BID(Ids::CORAL_BLOCK), "Coral Block", new BlockBreakInfo(7.0, BlockToolType::PICKAXE, ToolTier::WOOD()->getHarvestLevel())));
 		$this->register(new CraftingTable(new BID(Ids::CRAFTING_TABLE), "Crafting Table"));
 		$this->register(new DaylightSensor(new BIDFlattened(Ids::DAYLIGHT_DETECTOR, Ids::DAYLIGHT_DETECTOR_INVERTED, 0, null, TileDaylightSensor::class), "Daylight Sensor"));
 		$this->register(new DeadBush(new BID(Ids::DEADBUSH), "Dead Bush"));
@@ -525,7 +526,6 @@ class BlockFactory{
 		//TODO: minecraft:composter
 		//TODO: minecraft:conduit
 		//TODO: minecraft:coral
-		//TODO: minecraft:coral_block
 		//TODO: minecraft:coral_fan
 		//TODO: minecraft:coral_fan_dead
 		//TODO: minecraft:coral_fan_hang

src/block/CoralBlock.php

@@ -0,0 +1,106 @@
+<?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\block\utils\CoralType;
+use pocketmine\block\utils\InvalidBlockStateException;
+use pocketmine\data\bedrock\CoralTypeIdMap;
+use pocketmine\item\Item;
+use function mt_rand;
+
+final class CoralBlock extends Opaque{
+
+	/** @var CoralType */
+	private $coralType; //TODO: make this dynamic via setter
+
+	/** @var bool */
+	private $dead = false;
+
+	public function __construct(BlockIdentifier $idInfo, string $name, BlockBreakInfo $breakInfo){
+		$this->coralType = CoralType::TUBE();
+		parent::__construct($idInfo, $name, $breakInfo);
+	}
+
+	public function readStateFromData(int $id, int $stateMeta) : void{
+		$coralType = CoralTypeIdMap::getInstance()->fromId($stateMeta & 0x7);
+		if($coralType === null){
+			throw new InvalidBlockStateException("No such coral type");
+		}
+		$this->coralType = $coralType;
+		$this->dead = ($stateMeta & BlockLegacyMetadata::CORAL_BLOCK_FLAG_DEAD) !== 0;
+	}
+
+	protected function writeStateToMeta() : int{
+		return ($this->dead ? BlockLegacyMetadata::CORAL_BLOCK_FLAG_DEAD : 0) | CoralTypeIdMap::getInstance()->toId($this->coralType);
+	}
+
+	public function getStateBitmask() : int{
+		return 0b1111;
+	}
+
+	public function getNonPersistentStateBitmask() : int{
+		return 0;
+	}
+
+	public function getCoralType() : CoralType{ return $this->coralType; }
+
+	public function isDead() : bool{ return $this->dead; }
+
+	/** @return $this */
+	public function setDead(bool $dead) : self{
+		$this->dead = $dead;
+		return $this;
+	}
+
+	public function onNearbyBlockChange() : void{
+		if(!$this->dead){
+			$this->pos->getWorld()->scheduleDelayedBlockUpdate($this->pos, mt_rand(40, 200));
+		}
+	}
+
+	public function onScheduledUpdate() : void{
+		if(!$this->dead){
+			$world = $this->pos->getWorld();
+
+			$hasWater = false;
+			foreach($this->pos->sides() as $vector3){
+				if($world->getBlock($vector3) instanceof Water){
+					$hasWater = true;
+					break;
+				}
+			}
+			if(!$hasWater){
+				$world->setBlock($this->pos, $this->setDead(true));
+			}
+		}
+	}
+
+	public function getDropsForCompatibleTool(Item $item) : array{
+		return [$this->setDead(true)->asItem()];
+	}
+
+	public function isAffectedBySilkTouch() : bool{
+		return true;
+	}
+}

src/block/VanillaBlocks.php

@@ -127,6 +127,7 @@ use function assert;
  * @method static ChemistryTable COMPOUND_CREATOR()
  * @method static Concrete CONCRETE()
  * @method static ConcretePowder CONCRETE_POWDER()
+ * @method static CoralBlock CORAL_BLOCK()
  * @method static Flower CORNFLOWER()
  * @method static Opaque CRACKED_STONE_BRICKS()
  * @method static CraftingTable CRAFTING_TABLE()
@@ -743,6 +744,7 @@ final class VanillaBlocks{
 		self::register("compound_creator", $factory->get(238));
 		self::register("concrete", $factory->get(236));
 		self::register("concrete_powder", $factory->get(237));
+		self::register("coral_block", $factory->get(387));
 		self::register("cornflower", $factory->get(38, 9));
 		self::register("cracked_stone_bricks", $factory->get(98, 2));
 		self::register("crafting_table", $factory->get(58));

src/data/bedrock/CoralTypeIdMap.php

@@ -0,0 +1,68 @@
+<?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\BlockLegacyMetadata;
+use pocketmine\block\utils\CoralType;
+use pocketmine\utils\SingletonTrait;
+use function array_key_exists;
+
+final class CoralTypeIdMap{
+	use SingletonTrait;
+
+	/**
+	 * @var CoralType[]
+	 * @phpstan-var array<int, CoralType>
+	 */
+	private $idToEnum = [];
+	/**
+	 * @var int[]
+	 * @phpstan-var array<int, int>
+	 */
+	private $enumToId = [];
+
+	public function __construct(){
+		$this->register(BlockLegacyMetadata::CORAL_VARIANT_TUBE, CoralType::TUBE());
+		$this->register(BlockLegacyMetadata::CORAL_VARIANT_BRAIN, CoralType::BRAIN());
+		$this->register(BlockLegacyMetadata::CORAL_VARIANT_BUBBLE, CoralType::BUBBLE());
+		$this->register(BlockLegacyMetadata::CORAL_VARIANT_FIRE, CoralType::FIRE());
+		$this->register(BlockLegacyMetadata::CORAL_VARIANT_HORN, CoralType::HORN());
+	}
+
+	public function register(int $id, CoralType $type) : void{
+		$this->idToEnum[$id] = $type;
+		$this->enumToId[$type->id()] = $id;
+	}
+
+	public function fromId(int $id) : ?CoralType{
+		return $this->idToEnum[$id] ?? null;
+	}
+
+	public function toId(CoralType $type) : int{
+		if(!array_key_exists($type->id(), $this->enumToId)){
+			throw new \InvalidArgumentException("Coral type does not have a mapped ID"); //this should never happen
+		}
+		return $this->enumToId[$type->id()];
+	}
+}