Implemented basic Ender Pearls

this doesn't have full functionality yet (like spawning endermites) because some things aren't implemented yet.

src/pocketmine/entity/Entity.php

@@ -34,6 +34,7 @@ use pocketmine\entity\object\Painting;
 use pocketmine\entity\object\PaintingMotive;
 use pocketmine\entity\projectile\Arrow;
 use pocketmine\entity\projectile\Egg;
+use pocketmine\entity\projectile\EnderPearl;
 use pocketmine\entity\projectile\Snowball;
 use pocketmine\entity\projectile\SplashPotion;
 use pocketmine\event\entity\EntityDamageEvent;
@@ -231,6 +232,7 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 
 		Entity::registerEntity(Arrow::class, false, ['Arrow', 'minecraft:arrow']);
 		Entity::registerEntity(Egg::class, false, ['Egg', 'minecraft:egg']);
+		Entity::registerEntity(EnderPearl::class, false, ['ThrownEnderpearl', 'minecraft:ender_pearl']);
 		Entity::registerEntity(ExperienceOrb::class, false, ['XPOrb', 'minecraft:xp_orb']);
 		Entity::registerEntity(FallingSand::class, false, ['FallingSand', 'minecraft:falling_block']);
 		Entity::registerEntity(Item::class, false, ['Item', 'minecraft:item']);

src/pocketmine/entity/projectile/EnderPearl.php

@@ -0,0 +1,74 @@
+<?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\entity\projectile;
+
+use pocketmine\block\Block;
+use pocketmine\event\entity\EntityDamageEvent;
+use pocketmine\event\entity\ProjectileHitEvent;
+use pocketmine\level\sound\EndermanTeleportSound;
+use pocketmine\math\AxisAlignedBB;
+use pocketmine\math\RayTraceResult;
+use pocketmine\math\Vector3;
+use pocketmine\network\mcpe\protocol\LevelEventPacket;
+
+class EnderPearl extends Throwable{
+	public const NETWORK_ID = self::ENDER_PEARL;
+
+	protected function calculateInterceptWithBlock(Block $block, Vector3 $start, Vector3 $end) : ?RayTraceResult{
+		if($block->getId() !== Block::AIR and empty($block->getCollisionBoxes())){
+			//TODO: remove this once block collision boxes are fixed properly
+			$bb = new AxisAlignedBB(
+				$block->x,
+				$block->y,
+				$block->z,
+				$block->x + 1,
+				$block->y + 1,
+				$block->z + 1
+			);
+
+			return $bb->calculateIntercept($start, $end);
+		}
+
+		return parent::calculateInterceptWithBlock($block, $start, $end);
+	}
+
+	protected function onHit(ProjectileHitEvent $event) : void{
+		$owner = $this->getOwningEntity();
+		if($owner !== null){
+			//TODO: check end gateways (when they are added)
+			//TODO: spawn endermites at origin
+
+			$this->level->broadcastLevelEvent($owner, LevelEventPacket::EVENT_PARTICLE_ENDERMAN_TELEPORT);
+			$this->level->addSound(new EndermanTeleportSound($owner));
+			$owner->teleport($event->getRayTraceResult()->getHitVector());
+			$this->level->addSound(new EndermanTeleportSound($owner));
+
+			$owner->attack(new EntityDamageEvent($owner, EntityDamageEvent::CAUSE_FALL, 5));
+		}
+
+		parent::onHit($event);
+
+		$this->flagForDespawn();
+	}
+}

src/pocketmine/item/EnderPearl.php

@@ -0,0 +1,42 @@
+<?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\item;
+
+class EnderPearl extends ProjectileItem{
+	public function __construct(int $meta = 0){
+		parent::__construct(self::ENDER_PEARL, $meta, "Ender Pearl");
+	}
+
+	public function getProjectileEntityType() : string{
+		return "ThrownEnderpearl";
+	}
+
+	public function getThrowForce() : float{
+		return 1.5;
+	}
+
+	public function getCooldownTicks() : int{
+		return 20;
+	}
+}

src/pocketmine/item/ItemFactory.php

@@ -151,7 +151,7 @@ class ItemFactory{
 		self::registerItem(new RawChicken());
 		self::registerItem(new CookedChicken());
 		self::registerItem(new RottenFlesh());
-		//TODO: ENDER_PEARL
+		self::registerItem(new EnderPearl());
 		self::registerItem(new BlazeRod());
 		self::registerItem(new Item(Item::GHAST_TEAR, 0, "Ghast Tear"));
 		self::registerItem(new Item(Item::GOLD_NUGGET, 0, "Gold Nugget"));