Release 3.3.3

this should make it easier to debug problems when content of packets changes during protocol updates.

composer.lock

@@ -76,16 +76,16 @@
         },
         {
             "name": "pocketmine/nbt",
-            "version": "0.2.1",
+            "version": "0.2.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/NBT.git",
-                "reference": "a4ee39f313c6870153fb7c7e513b211217f7daf8"
+                "reference": "474f0cf0a47656d0122b4f3f71302e694ed6977b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/NBT/zipball/a4ee39f313c6870153fb7c7e513b211217f7daf8",
-                "reference": "a4ee39f313c6870153fb7c7e513b211217f7daf8",
+                "url": "https://api.github.com/repos/pmmp/NBT/zipball/474f0cf0a47656d0122b4f3f71302e694ed6977b",
+                "reference": "474f0cf0a47656d0122b4f3f71302e694ed6977b",
                 "shasum": ""
             },
             "require": {
@@ -109,10 +109,10 @@
             ],
             "description": "PHP library for working with Named Binary Tags",
             "support": {
-                "source": "https://github.com/pmmp/NBT/tree/0.2.1",
+                "source": "https://github.com/pmmp/NBT/tree/0.2.2",
                 "issues": "https://github.com/pmmp/NBT/issues"
             },
-            "time": "2018-09-04T10:36:02+00:00"
+            "time": "2018-10-12T08:26:44+00:00"
         },
         {
             "name": "pocketmine/raklib",
@@ -191,16 +191,16 @@
         },
         {
             "name": "pocketmine/spl",
-            "version": "0.3.1",
+            "version": "0.3.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/pmmp/SPL.git",
-                "reference": "ca3912099543ddc4b4b14f40e258d84ca547dfa5"
+                "reference": "7fd53857cd000491ba69e8db865792a024dd2c49"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/pmmp/SPL/zipball/ca3912099543ddc4b4b14f40e258d84ca547dfa5",
-                "reference": "ca3912099543ddc4b4b14f40e258d84ca547dfa5",
+                "url": "https://api.github.com/repos/pmmp/SPL/zipball/7fd53857cd000491ba69e8db865792a024dd2c49",
+                "reference": "7fd53857cd000491ba69e8db865792a024dd2c49",
                 "shasum": ""
             },
             "type": "library",
@@ -219,7 +219,7 @@
             "support": {
                 "source": "https://github.com/pmmp/SPL/tree/master"
             },
-            "time": "2018-06-09T17:30:36+00:00"
+            "time": "2018-08-12T15:17:39+00:00"
         }
     ],
     "packages-dev": [],

src/pocketmine/CrashDump.php

@@ -212,11 +212,11 @@ class CrashDump{
 		$this->addLine("Code:");
 		$this->data["code"] = [];
 
-		if($this->server->getProperty("auto-report.send-code", true) !== false){
+		if($this->server->getProperty("auto-report.send-code", true) !== false and file_exists($error["fullFile"])){
 			$file = @file($error["fullFile"], FILE_IGNORE_NEW_LINES);
-			for($l = max(0, $error["line"] - 10); $l < $error["line"] + 10; ++$l){
-				$this->addLine("[" . ($l + 1) . "] " . @$file[$l]);
-				$this->data["code"][$l + 1] = @$file[$l];
+			for($l = max(0, $error["line"] - 10); $l < $error["line"] + 10 and isset($file[$l]); ++$l){
+				$this->addLine("[" . ($l + 1) . "] " . $file[$l]);
+				$this->data["code"][$l + 1] = $file[$l];
 			}
 		}
 

src/pocketmine/MemoryManager.php

@@ -243,6 +243,9 @@ class MemoryManager{
 
 		if($this->garbageCollectionAsync){
 			$pool = $this->server->getAsyncPool();
+			if(($w = $pool->shutdownUnusedWorkers()) > 0){
+				$this->server->getLogger()->debug("Shut down $w idle async pool workers");
+			}
 			foreach($pool->getRunningWorkers() as $i){
 				$pool->submitTaskToWorker(new GarbageCollectionTask(), $i);
 			}
@@ -470,7 +473,7 @@ class MemoryManager{
 				self::continueDump($value, $data[$key], $objects, $refCounts, $recursion + 1, $maxNesting, $maxStringSize);
 			}
 		}elseif(is_string($from)){
-			$data = "(string) len(". strlen($from) .") " . substr(Utils::printable($from), 0, $maxStringSize);
+			$data = "(string) len(" . strlen($from) . ") " . substr(Utils::printable($from), 0, $maxStringSize);
 		}elseif(is_resource($from)){
 			$data = "(resource) " . print_r($from, true);
 		}else{

src/pocketmine/Player.php

@@ -32,11 +32,9 @@ use pocketmine\entity\Effect;
 use pocketmine\entity\EffectInstance;
 use pocketmine\entity\Entity;
 use pocketmine\entity\Human;
-use pocketmine\entity\Living;
 use pocketmine\entity\object\ItemEntity;
 use pocketmine\entity\projectile\Arrow;
 use pocketmine\entity\Skin;
-use pocketmine\event\entity\EntityDamageByBlockEvent;
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\event\inventory\InventoryCloseEvent;
@@ -68,6 +66,8 @@ use pocketmine\event\player\PlayerToggleSneakEvent;
 use pocketmine\event\player\PlayerToggleSprintEvent;
 use pocketmine\event\player\PlayerTransferEvent;
 use pocketmine\event\server\DataPacketSendEvent;
+use pocketmine\form\Form;
+use pocketmine\form\FormValidationException;
 use pocketmine\inventory\CraftingGrid;
 use pocketmine\inventory\Inventory;
 use pocketmine\inventory\PlayerCursorInventory;
@@ -77,6 +77,8 @@ use pocketmine\inventory\transaction\InventoryTransaction;
 use pocketmine\inventory\transaction\TransactionValidationException;
 use pocketmine\item\Consumable;
 use pocketmine\item\Durable;
+use pocketmine\item\enchantment\EnchantmentInstance;
+use pocketmine\item\enchantment\MeleeWeaponEnchantment;
 use pocketmine\item\Item;
 use pocketmine\item\WritableBook;
 use pocketmine\item\WrittenBook;
@@ -116,6 +118,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 use pocketmine\network\mcpe\protocol\LoginPacket;
 use pocketmine\network\mcpe\protocol\MobEffectPacket;
 use pocketmine\network\mcpe\protocol\MobEquipmentPacket;
+use pocketmine\network\mcpe\protocol\ModalFormRequestPacket;
 use pocketmine\network\mcpe\protocol\MovePlayerPacket;
 use pocketmine\network\mcpe\protocol\PlayerActionPacket;
 use pocketmine\network\mcpe\protocol\PlayStatusPacket;
@@ -146,6 +149,7 @@ use pocketmine\network\SourceInterface;
 use pocketmine\permission\PermissibleBase;
 use pocketmine\permission\PermissionAttachment;
 use pocketmine\permission\PermissionAttachmentInfo;
+use pocketmine\permission\PermissionManager;
 use pocketmine\plugin\Plugin;
 use pocketmine\resourcepacks\ResourcePack;
 use pocketmine\tile\ItemFrame;
@@ -169,6 +173,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 
 	/**
 	 * Checks a supplied username and checks it is valid.
+	 *
 	 * @param string $name
 	 *
 	 * @return bool
@@ -193,9 +198,6 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	 */
 	protected $sessionAdapter;
 
-	/** @var int */
-	protected $protocol = -1;
-
 	/** @var string */
 	protected $ip;
 	/** @var int */
@@ -322,6 +324,11 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	/** @var int[] ID => ticks map */
 	protected $usedItemsCooldown = [];
 
+	/** @var int */
+	protected $formIdCounter = 0;
+	/** @var Form[] */
+	protected $forms = [];
+
 	/**
 	 * @return TranslationContainer|string
 	 */
@@ -621,7 +628,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	/**
 	 * @param Plugin $plugin
 	 * @param string $name
-	 * @param bool $value
+	 * @param bool   $value
 	 *
 	 * @return PermissionAttachment
 	 */
@@ -637,8 +644,9 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	}
 
 	public function recalculatePermissions(){
-		$this->server->getPluginManager()->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_USERS, $this);
-		$this->server->getPluginManager()->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
+		$permManager = PermissionManager::getInstance();
+		$permManager->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_USERS, $this);
+		$permManager->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
 
 		if($this->perm === null){
 			return;
@@ -647,10 +655,10 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 		$this->perm->recalculatePermissions();
 
 		if($this->hasPermission(Server::BROADCAST_CHANNEL_USERS)){
-			$this->server->getPluginManager()->subscribeToPermission(Server::BROADCAST_CHANNEL_USERS, $this);
+			$permManager->subscribeToPermission(Server::BROADCAST_CHANNEL_USERS, $this);
 		}
 		if($this->hasPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE)){
-			$this->server->getPluginManager()->subscribeToPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
+			$permManager->subscribeToPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
 		}
 
 		if($this->spawned){
@@ -1018,10 +1026,10 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 		$this->sendPlayStatus(PlayStatusPacket::PLAYER_SPAWN);
 
 		if($this->hasPermission(Server::BROADCAST_CHANNEL_USERS)){
-			$this->server->getPluginManager()->subscribeToPermission(Server::BROADCAST_CHANNEL_USERS, $this);
+			PermissionManager::getInstance()->subscribeToPermission(Server::BROADCAST_CHANNEL_USERS, $this);
 		}
 		if($this->hasPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE)){
-			$this->server->getPluginManager()->subscribeToPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
+			PermissionManager::getInstance()->subscribeToPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
 		}
 
 		$this->server->getPluginManager()->callEvent($ev = new PlayerJoinEvent($this,
@@ -1319,6 +1327,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	 * TODO: remove this when Spectator Mode gets added properly to MCPE
 	 *
 	 * @param int $gamemode
+	 *
 	 * @return int
 	 */
 	public static function getClientFriendlyGamemode(int $gamemode) : int{
@@ -1839,8 +1848,6 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 			return false;
 		}
 
-		$this->protocol = $packet->protocol;
-
 		if($packet->protocol !== ProtocolInfo::CURRENT_PROTOCOL){
 			if($packet->protocol < ProtocolInfo::CURRENT_PROTOCOL){
 				$this->sendPlayStatus(PlayStatusPacket::LOGIN_FAILED_CLIENT, true);
@@ -1923,7 +1930,6 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	public function sendPlayStatus(int $status, bool $immediate = false){
 		$pk = new PlayStatusPacket();
 		$pk->status = $status;
-		$pk->protocol = $this->protocol;
 		$this->sendDataPacket($pk, false, $immediate);
 	}
 
@@ -2031,7 +2037,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 			case ResourcePackClientResponsePacket::STATUS_SEND_PACKS:
 				$manager = $this->server->getResourcePackManager();
 				foreach($packet->packIds as $uuid){
-					$pack = $manager->getPackById($uuid);
+					$pack = $manager->getPackById(substr($uuid, 0, strpos($uuid, "_"))); //dirty hack for mojang's dirty hack for versions
 					if(!($pack instanceof ResourcePack)){
 						//Client requested a resource pack but we don't have it available on the server
 						$this->close("", "disconnectionScreen.resourcePack", true);
@@ -2262,6 +2268,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	 * Don't expect much from this handler. Most of it is roughly hacked and duct-taped together.
 	 *
 	 * @param InventoryTransactionPacket $packet
+	 *
 	 * @return bool
 	 */
 	public function handleInventoryTransaction(InventoryTransactionPacket $packet) : bool{
@@ -2499,6 +2506,19 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 						}
 
 						$ev = new EntityDamageByEntityEvent($this, $target, EntityDamageEvent::CAUSE_ENTITY_ATTACK, $heldItem->getAttackPoints());
+
+						$meleeEnchantmentDamage = 0;
+						/** @var EnchantmentInstance[] $meleeEnchantments */
+						$meleeEnchantments = [];
+						foreach($heldItem->getEnchantments() as $enchantment){
+							$type = $enchantment->getType();
+							if($type instanceof MeleeWeaponEnchantment and $type->isApplicableTo($target)){
+								$meleeEnchantmentDamage += $type->getDamageBonus($enchantment->getLevel());
+								$meleeEnchantments[] = $enchantment;
+							}
+						}
+						$ev->setModifier($meleeEnchantmentDamage, EntityDamageEvent::MODIFIER_WEAPON_ENCHANTMENTS);
+
 						if($cancelled){
 							$ev->setCancelled();
 						}
@@ -2526,6 +2546,12 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 							}
 						}
 
+						foreach($meleeEnchantments as $enchantment){
+							$type = $enchantment->getType();
+							assert($type instanceof MeleeWeaponEnchantment);
+							$type->onPostAttack($this, $target, $enchantment->getLevel());
+						}
+
 						if($this->isAlive()){
 							//reactive damage like thorns might cause us to be killed by attacking another mob, which
 							//would mean we'd already have dropped the inventory by the time we reached here
@@ -2698,7 +2724,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 
 				$target = $this->level->getBlock($pos);
 
-				$ev = new PlayerInteractEvent($this, $this->inventory->getItemInHand(), $target, null, $packet->face, $target->getId() === 0 ? PlayerInteractEvent::LEFT_CLICK_AIR : PlayerInteractEvent::LEFT_CLICK_BLOCK);
+				$ev = new PlayerInteractEvent($this, $this->inventory->getItemInHand(), $target, null, $packet->face, PlayerInteractEvent::LEFT_CLICK_BLOCK);
 				if($this->level->checkSpawnProtection($this, $target)){
 					$ev->setCancelled();
 				}
@@ -2762,7 +2788,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 				break; //TODO
 			case PlayerActionPacket::ACTION_CONTINUE_BREAK:
 				$block = $this->level->getBlock($pos);
-				$this->level->broadcastLevelEvent($pos, LevelEventPacket::EVENT_PARTICLE_PUNCH_BLOCK, BlockFactory::toStaticRuntimeId($block->getId(), $block->getDamage()) | ($packet->face << 24));
+				$this->level->broadcastLevelEvent($pos, LevelEventPacket::EVENT_PARTICLE_PUNCH_BLOCK, $block->getRuntimeId() | ($packet->face << 24));
 				//TODO: destroy-progress level event
 				break;
 			case PlayerActionPacket::ACTION_START_SWIMMING:
@@ -2822,6 +2848,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	 * Drops an item on the ground in front of the player. Returns if the item drop was successful.
 	 *
 	 * @param Item $item
+	 *
 	 * @return bool if the item was dropped or if the item was null
 	 */
 	public function dropItem(Item $item) : bool{
@@ -3121,7 +3148,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	 * Transfers a player to another server.
 	 *
 	 * @param string $address The IP address or hostname of the destination server
-	 * @param int    $port    The destination port, defaults to 19132
+	 * @param int    $port The destination port, defaults to 19132
 	 * @param string $message Message to show in the console when closing the player
 	 *
 	 * @return bool if transfer was successful.
@@ -3145,14 +3172,16 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	/**
 	 * Kicks a player from the server
 	 *
-	 * @param string $reason
-	 * @param bool   $isAdmin
+	 * @param string               $reason
+	 * @param bool                 $isAdmin
+	 * @param TextContainer|string $quitMessage
 	 *
 	 * @return bool
 	 */
-	public function kick(string $reason = "", bool $isAdmin = true) : bool{
-		$this->server->getPluginManager()->callEvent($ev = new PlayerKickEvent($this, $reason, $this->getLeaveMessage()));
+	public function kick(string $reason = "", bool $isAdmin = true, $quitMessage = null) : bool{
+		$this->server->getPluginManager()->callEvent($ev = new PlayerKickEvent($this, $reason, $quitMessage ?? $this->getLeaveMessage()));
 		if(!$ev->isCancelled()){
+			$reason = $ev->getReason();
 			$message = $reason;
 			if($isAdmin){
 				if(!$this->isBanned()){
@@ -3246,7 +3275,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	 * Internal function used for sending titles.
 	 *
 	 * @param string $title
-	 * @param int $type
+	 * @param int    $type
 	 */
 	protected function sendTitleText(string $title, int $type){
 		$pk = new SetTitlePacket();
@@ -3330,6 +3359,48 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 		$this->dataPacket($pk);
 	}
 
+	/**
+	 * Sends a Form to the player, or queue to send it if a form is already open.
+	 *
+	 * @param Form $form
+	 */
+	public function sendForm(Form $form) : void{
+		$id = $this->formIdCounter++;
+		$pk = new ModalFormRequestPacket();
+		$pk->formId = $id;
+		$pk->formData = json_encode($form);
+		if($pk->formData === false){
+			throw new \InvalidArgumentException("Failed to encode form JSON: " . json_last_error_msg());
+		}
+		if($this->dataPacket($pk)){
+			$this->forms[$id] = $form;
+		}
+	}
+
+	/**
+	 * @param int   $formId
+	 * @param mixed $responseData
+	 *
+	 * @return bool
+	 */
+	public function onFormSubmit(int $formId, $responseData) : bool{
+		if(!isset($this->forms[$formId])){
+			$this->server->getLogger()->debug("Got unexpected response for form $formId");
+			return false;
+		}
+
+		try{
+			$this->forms[$formId]->handleResponse($this, $responseData);
+		}catch(FormValidationException $e){
+			$this->server->getLogger()->critical("Failed to validate form " . get_class($this->forms[$formId]) . ": " . $e->getMessage());
+			$this->server->getLogger()->logException($e);
+		}finally{
+			unset($this->forms[$formId]);
+		}
+
+		return true;
+	}
+
 	/**
 	 * Note for plugin developers: use kick() with the isAdmin
 	 * flag set to kick without the "Kicked by admin" part instead of this method.
@@ -3350,8 +3421,8 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 				$this->interface->close($this, $notify ? $reason : "");
 				$this->sessionAdapter = null;
 
-				$this->server->getPluginManager()->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_USERS, $this);
-				$this->server->getPluginManager()->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
+				PermissionManager::getInstance()->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_USERS, $this);
+				PermissionManager::getInstance()->unsubscribeFromPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this);
 
 				$this->stopSleep();
 
@@ -3444,11 +3515,9 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	/**
 	 * Handles player data saving
 	 *
-	 * @param bool $async
-	 *
 	 * @throws \InvalidStateException if the player is closed
 	 */
-	public function save(bool $async = false){
+	public function save(){
 		if($this->closed){
 			throw new \InvalidStateException("Tried to save closed player");
 		}
@@ -3485,7 +3554,7 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 		$this->namedtag->setLong("lastPlayed", (int) floor(microtime(true) * 1000));
 
 		if($this->username != "" and $this->namedtag instanceof CompoundTag){
-			$this->server->saveOfflinePlayerData($this->username, $this->namedtag, $async);
+			$this->server->saveOfflinePlayerData($this->username, $this->namedtag);
 		}
 	}
 
@@ -3500,123 +3569,11 @@ class Player extends Human implements CommandSender, ChunkLoader, IPlayer{
 	}
 
 	protected function onDeath() : void{
-		$message = "death.attack.generic";
-
-		$params = [
-			$this->getDisplayName()
-		];
-
-		$cause = $this->getLastDamageCause();
-
-		switch($cause === null ? EntityDamageEvent::CAUSE_CUSTOM : $cause->getCause()){
-			case EntityDamageEvent::CAUSE_ENTITY_ATTACK:
-				if($cause instanceof EntityDamageByEntityEvent){
-					$e = $cause->getDamager();
-					if($e instanceof Player){
-						$message = "death.attack.player";
-						$params[] = $e->getDisplayName();
-						break;
-					}elseif($e instanceof Living){
-						$message = "death.attack.mob";
-						$params[] = $e->getNameTag() !== "" ? $e->getNameTag() : $e->getName();
-						break;
-					}else{
-						$params[] = "Unknown";
-					}
-				}
-				break;
-			case EntityDamageEvent::CAUSE_PROJECTILE:
-				if($cause instanceof EntityDamageByEntityEvent){
-					$e = $cause->getDamager();
-					if($e instanceof Player){
-						$message = "death.attack.arrow";
-						$params[] = $e->getDisplayName();
-					}elseif($e instanceof Living){
-						$message = "death.attack.arrow";
-						$params[] = $e->getNameTag() !== "" ? $e->getNameTag() : $e->getName();
-						break;
-					}else{
-						$params[] = "Unknown";
-					}
-				}
-				break;
-			case EntityDamageEvent::CAUSE_SUICIDE:
-				$message = "death.attack.generic";
-				break;
-			case EntityDamageEvent::CAUSE_VOID:
-				$message = "death.attack.outOfWorld";
-				break;
-			case EntityDamageEvent::CAUSE_FALL:
-				if($cause instanceof EntityDamageEvent){
-					if($cause->getFinalDamage() > 2){
-						$message = "death.fell.accident.generic";
-						break;
-					}
-				}
-				$message = "death.attack.fall";
-				break;
-
-			case EntityDamageEvent::CAUSE_SUFFOCATION:
-				$message = "death.attack.inWall";
-				break;
-
-			case EntityDamageEvent::CAUSE_LAVA:
-				$message = "death.attack.lava";
-				break;
-
-			case EntityDamageEvent::CAUSE_FIRE:
-				$message = "death.attack.onFire";
-				break;
-
-			case EntityDamageEvent::CAUSE_FIRE_TICK:
-				$message = "death.attack.inFire";
-				break;
-
-			case EntityDamageEvent::CAUSE_DROWNING:
-				$message = "death.attack.drown";
-				break;
-
-			case EntityDamageEvent::CAUSE_CONTACT:
-				if($cause instanceof EntityDamageByBlockEvent){
-					if($cause->getDamager()->getId() === Block::CACTUS){
-						$message = "death.attack.cactus";
-					}
-				}
-				break;
-
-			case EntityDamageEvent::CAUSE_BLOCK_EXPLOSION:
-			case EntityDamageEvent::CAUSE_ENTITY_EXPLOSION:
-				if($cause instanceof EntityDamageByEntityEvent){
-					$e = $cause->getDamager();
-					if($e instanceof Player){
-						$message = "death.attack.explosion.player";
-						$params[] = $e->getDisplayName();
-					}elseif($e instanceof Living){
-						$message = "death.attack.explosion.player";
-						$params[] = $e->getNameTag() !== "" ? $e->getNameTag() : $e->getName();
-						break;
-					}
-				}else{
-					$message = "death.attack.explosion";
-				}
-				break;
-
-			case EntityDamageEvent::CAUSE_MAGIC:
-				$message = "death.attack.magic";
-				break;
-
-			case EntityDamageEvent::CAUSE_CUSTOM:
-				break;
-
-			default:
-				break;
-		}
-
 		//Crafting grid must always be evacuated even if keep-inventory is true. This dumps the contents into the
 		//main inventory and drops the rest on the ground.
 		$this->doCloseInventory();
 
-		$this->server->getPluginManager()->callEvent($ev = new PlayerDeathEvent($this, $this->getDrops(), new TranslationContainer($message, $params)));
+		$this->server->getPluginManager()->callEvent($ev = new PlayerDeathEvent($this, $this->getDrops()));
 
 		if(!$ev->getKeepInventory()){
 			foreach($ev->getDrops() as $item){

src/pocketmine/PocketMine.php

@@ -37,7 +37,7 @@ namespace pocketmine {
 	use pocketmine\wizard\SetupWizard;
 
 	const NAME = "PocketMine-MP";
-	const BASE_VERSION = "3.1.7";
+	const BASE_VERSION = "3.3.3";
 	const IS_DEVELOPMENT_BUILD = false;
 	const BUILD_NUMBER = 0;
 
@@ -53,83 +53,89 @@ namespace pocketmine {
 	 * Enjoy it as much as I did writing it. I don't want to do it again.
 	 */
 
-	if(version_compare(MIN_PHP_VERSION, PHP_VERSION) > 0){
-		critical_error(\pocketmine\NAME . " requires PHP >= " . MIN_PHP_VERSION . ", but you have PHP " . PHP_VERSION . ".");
-		critical_error("Please refer to the installation instructions at http://pmmp.rtfd.io/en/rtfd/installation.html.");
-		exit(1);
-	}
-
-	if(PHP_INT_SIZE < 8){
-		critical_error("Running " . \pocketmine\NAME . " with 32-bit systems/PHP is no longer supported.");
-		critical_error("Please upgrade to a 64-bit system, or use a 64-bit PHP binary if this is a 64-bit system.");
-		critical_error("Please refer to the installation instructions at http://pmmp.rtfd.io/en/rtfd/installation.html.");
-		exit(1);
-	}
-
-	/* Dependencies check */
-
-	$errors = 0;
-
-	if(php_sapi_name() !== "cli"){
-		critical_error("You must run " . \pocketmine\NAME . " using the CLI.");
-		++$errors;
-	}
-
-	$extensions = [
-		"bcmath" => "BC Math",
-		"curl" => "cURL",
-		"ctype" => "ctype",
-		"date" => "Date",
-		"hash" => "Hash",
-		"json" => "JSON",
-		"mbstring" => "Multibyte String",
-		"openssl" => "OpenSSL",
-		"pcre" => "PCRE",
-		"phar" => "Phar",
-		"pthreads" => "pthreads",
-		"reflection" => "Reflection",
-		"sockets" => "Sockets",
-		"spl" => "SPL",
-		"yaml" => "YAML",
-		"zip" => "Zip",
-		"zlib" => "Zlib"
-	];
-
-	foreach($extensions as $ext => $name){
-		if(!extension_loaded($ext)){
-			critical_error("Unable to find the $name ($ext) extension.");
-			++$errors;
+	/**
+	 * @return string[]
+	 */
+	function check_platform_dependencies(){
+		if(version_compare(MIN_PHP_VERSION, PHP_VERSION) > 0){
+			//If PHP version isn't high enough, anything below might break, so don't bother checking it.
+			return [
+				\pocketmine\NAME . " requires PHP >= " . MIN_PHP_VERSION . ", but you have PHP " . PHP_VERSION . "."
+			];
 		}
-	}
 
-	if(extension_loaded("pthreads")){
-		$pthreads_version = phpversion("pthreads");
-		if(substr_count($pthreads_version, ".") < 2){
-			$pthreads_version = "0.$pthreads_version";
+		$messages = [];
+
+		if(PHP_INT_SIZE < 8){
+			$messages[] = "Running " . \pocketmine\NAME . " with 32-bit systems/PHP is no longer supported. Please upgrade to a 64-bit system, or use a 64-bit PHP binary if this is a 64-bit system.";
 		}
-		if(version_compare($pthreads_version, "3.1.7dev") < 0){
-			critical_error("pthreads >= 3.1.7dev is required, while you have $pthreads_version.");
-			++$errors;
+
+		if(php_sapi_name() !== "cli"){
+			$messages[] = "You must run " . \pocketmine\NAME . " using the CLI.";
 		}
-	}
 
-	if(extension_loaded("leveldb")){
-		$leveldb_version = phpversion("leveldb");
-		if(version_compare($leveldb_version, "0.2.1") < 0){
-			critical_error("php-leveldb >= 0.2.1 is required, while you have $leveldb_version");
-			++$errors;
+		$extensions = [
+			"bcmath" => "BC Math",
+			"curl" => "cURL",
+			"ctype" => "ctype",
+			"date" => "Date",
+			"hash" => "Hash",
+			"json" => "JSON",
+			"mbstring" => "Multibyte String",
+			"openssl" => "OpenSSL",
+			"pcre" => "PCRE",
+			"phar" => "Phar",
+			"pthreads" => "pthreads",
+			"reflection" => "Reflection",
+			"sockets" => "Sockets",
+			"spl" => "SPL",
+			"yaml" => "YAML",
+			"zip" => "Zip",
+			"zlib" => "Zlib"
+		];
+
+		foreach($extensions as $ext => $name){
+			if(!extension_loaded($ext)){
+				$messages[] = "Unable to find the $name ($ext) extension.";
+			}
 		}
+
+		if(extension_loaded("pthreads")){
+			$pthreads_version = phpversion("pthreads");
+			if(substr_count($pthreads_version, ".") < 2){
+				$pthreads_version = "0.$pthreads_version";
+			}
+			if(version_compare($pthreads_version, "3.1.7dev") < 0){
+				$messages[] = "pthreads >= 3.1.7dev is required, while you have $pthreads_version.";
+			}
+		}
+
+		if(extension_loaded("leveldb")){
+			$leveldb_version = phpversion("leveldb");
+			if(version_compare($leveldb_version, "0.2.1") < 0){
+				$messages[] = "php-leveldb >= 0.2.1 is required, while you have $leveldb_version.";
+			}
+		}
+
+		if(extension_loaded("pocketmine")){
+			$messages[] = "The native PocketMine extension is no longer supported.";
+		}
+
+		return $messages;
 	}
 
-	if(extension_loaded("pocketmine")){
-		critical_error("The native PocketMine extension is no longer supported.");
-		++$errors;
-	}
-
-	if($errors > 0){
+	if(!empty($messages = check_platform_dependencies())){
+		echo PHP_EOL;
+		$binary = version_compare(PHP_VERSION, "5.4") >= 0 ? PHP_BINARY : "unknown";
+		critical_error("Selected PHP binary ($binary) does not satisfy some requirements.");
+		foreach($messages as $m){
+			echo " - $m" . PHP_EOL;
+		}
 		critical_error("Please recompile PHP with the needed configuration, or refer to the installation instructions at http://pmmp.rtfd.io/en/rtfd/installation.html.");
+		echo PHP_EOL;
 		exit(1);
 	}
+	unset($messages);
 
 	error_reporting(-1);
 
@@ -139,12 +145,18 @@ namespace pocketmine {
 		define('pocketmine\PATH', dirname(__FILE__, 3) . DIRECTORY_SEPARATOR);
 	}
 
-	define('pocketmine\COMPOSER_AUTOLOADER_PATH', \pocketmine\PATH . 'vendor/autoload.php');
+	$opts = getopt("", ["bootstrap:"]);
+	if(isset($opts["bootstrap"])){
+		$bootstrap = realpath($opts["bootstrap"]) ?: $opts["bootstrap"];
+	}else{
+		$bootstrap = \pocketmine\PATH . 'vendor/autoload.php';
+	}
+	define('pocketmine\COMPOSER_AUTOLOADER_PATH', $bootstrap);
 
-	if(is_file(\pocketmine\COMPOSER_AUTOLOADER_PATH)){
+	if(\pocketmine\COMPOSER_AUTOLOADER_PATH !== false and is_file(\pocketmine\COMPOSER_AUTOLOADER_PATH)){
 		require_once(\pocketmine\COMPOSER_AUTOLOADER_PATH);
 	}else{
-		critical_error("Composer autoloader not found.");
+		critical_error("Composer autoloader not found at " . $bootstrap);
 		critical_error("Please install/update Composer dependencies or use provided builds.");
 		exit(1);
 	}

src/pocketmine/Server.php

@@ -39,6 +39,7 @@ use pocketmine\event\HandlerList;
 use pocketmine\event\level\LevelInitEvent;
 use pocketmine\event\level\LevelLoadEvent;
 use pocketmine\event\player\PlayerDataSaveEvent;
+use pocketmine\event\server\CommandEvent;
 use pocketmine\event\server\QueryRegenerateEvent;
 use pocketmine\event\server\ServerCommandEvent;
 use pocketmine\inventory\CraftingManager;
@@ -82,6 +83,7 @@ use pocketmine\network\rcon\RCON;
 use pocketmine\network\upnp\UPnP;
 use pocketmine\permission\BanList;
 use pocketmine\permission\DefaultPermissions;
+use pocketmine\permission\PermissionManager;
 use pocketmine\plugin\PharPluginLoader;
 use pocketmine\plugin\Plugin;
 use pocketmine\plugin\PluginLoadOrder;
@@ -89,7 +91,6 @@ use pocketmine\plugin\PluginManager;
 use pocketmine\plugin\ScriptPluginLoader;
 use pocketmine\resourcepacks\ResourcePackManager;
 use pocketmine\scheduler\AsyncPool;
-use pocketmine\scheduler\FileWriteTask;
 use pocketmine\scheduler\SendUsageTask;
 use pocketmine\snooze\SleeperHandler;
 use pocketmine\snooze\SleeperNotifier;
@@ -99,6 +100,7 @@ use pocketmine\timings\TimingsHandler;
 use pocketmine\updater\AutoUpdater;
 use pocketmine\utils\Binary;
 use pocketmine\utils\Config;
+use pocketmine\utils\Internet;
 use pocketmine\utils\MainLogger;
 use pocketmine\utils\Terminal;
 use pocketmine\utils\TextFormat;
@@ -802,9 +804,8 @@ class Server{
 	/**
 	 * @param string      $name
 	 * @param CompoundTag $nbtTag
-	 * @param bool        $async
 	 */
-	public function saveOfflinePlayerData(string $name, CompoundTag $nbtTag, bool $async = false){
+	public function saveOfflinePlayerData(string $name, CompoundTag $nbtTag){
 		$ev = new PlayerDataSaveEvent($nbtTag, $name);
 		$ev->setCancelled(!$this->shouldSavePlayerData());
 
@@ -813,11 +814,7 @@ class Server{
 		if(!$ev->isCancelled()){
 			$nbt = new BigEndianNBTStream();
 			try{
-				if($async){
-					$this->asyncPool->submitTask(new FileWriteTask($this->getDataPath() . "players/" . strtolower($name) . ".dat", $nbt->writeCompressed($ev->getSaveData())));
-				}else{
-					file_put_contents($this->getDataPath() . "players/" . strtolower($name) . ".dat", $nbt->writeCompressed($ev->getSaveData()));
-				}
+				file_put_contents($this->getDataPath() . "players/" . strtolower($name) . ".dat", $nbt->writeCompressed($ev->getSaveData()));
 			}catch(\Throwable $e){
 				$this->logger->critical($this->getLanguage()->translateString("pocketmine.data.saveError", [$name, $e->getMessage()]));
 				$this->logger->logException($e);
@@ -988,6 +985,7 @@ class Server{
 
 	/**
 	 * @internal
+	 *
 	 * @param Level $level
 	 */
 	public function removeLevel(Level $level) : void{
@@ -1025,15 +1023,8 @@ class Server{
 			return false;
 		}
 
-		try{
-			/** @see LevelProvider::__construct() */
-			$level = new Level($this, $name, new $providerClass($path));
-		}catch(\Throwable $e){
-
-			$this->logger->error($this->getLanguage()->translateString("pocketmine.level.loadError", [$name, $e->getMessage()]));
-			$this->logger->logException($e);
-			return false;
-		}
+		/** @see LevelProvider::__construct() */
+		$level = new Level($this, $name, new $providerClass($path));
 
 		$this->levels[$level->getId()] = $level;
 
@@ -1076,21 +1067,15 @@ class Server{
 			}
 		}
 
-		try{
-			$path = $this->getDataPath() . "worlds/" . $name . "/";
-			/** @var LevelProvider $providerClass */
-			$providerClass::generate($path, $name, $seed, $generator, $options);
+		$path = $this->getDataPath() . "worlds/" . $name . "/";
+		/** @var LevelProvider $providerClass */
+		$providerClass::generate($path, $name, $seed, $generator, $options);
 
-			/** @see LevelProvider::__construct() */
-			$level = new Level($this, $name, new $providerClass($path));
-			$this->levels[$level->getId()] = $level;
+		/** @see LevelProvider::__construct() */
+		$level = new Level($this, $name, new $providerClass($path));
+		$this->levels[$level->getId()] = $level;
 
-			$level->setTickRate($this->baseTickRate);
-		}catch(\Throwable $e){
-			$this->logger->error($this->getLanguage()->translateString("pocketmine.level.generationError", [$name, $e->getMessage()]));
-			$this->logger->logException($e);
-			return false;
-		}
+		$level->setTickRate($this->baseTickRate);
 
 		$this->getPluginManager()->callEvent(new LevelInitEvent($level));
 
@@ -1148,17 +1133,12 @@ class Server{
 	 * Useful for tracking entities across multiple worlds without needing strong references.
 	 *
 	 * @param int        $entityId
-	 * @param Level|null $expectedLevel Level to look in first for the target
+	 * @param Level|null $expectedLevel @deprecated Level to look in first for the target
 	 *
 	 * @return Entity|null
 	 */
 	public function findEntity(int $entityId, Level $expectedLevel = null){
-		$levels = $this->levels;
-		if($expectedLevel !== null){
-			array_unshift($levels, $expectedLevel);
-		}
-
-		foreach($levels as $level){
+		foreach($this->levels as $level){
 			assert(!$level->isClosed());
 			if(($entity = $level->getEntity($entityId)) instanceof Entity){
 				return $entity;
@@ -1305,7 +1285,7 @@ class Server{
 		if(($player = $this->getPlayerExact($name)) !== null){
 			$player->recalculatePermissions();
 		}
-		$this->operators->save(true);
+		$this->operators->save();
 	}
 
 	/**
@@ -1325,7 +1305,7 @@ class Server{
 	 */
 	public function addWhitelist(string $name){
 		$this->whitelist->set(strtolower($name), true);
-		$this->whitelist->save(true);
+		$this->whitelist->save();
 	}
 
 	/**
@@ -1463,6 +1443,7 @@ class Server{
 				$this->logger->emergency($this->baseLang->translateString("pocketmine.server.devBuild.error2"));
 				$this->logger->emergency($this->baseLang->translateString("pocketmine.server.devBuild.error3"));
 				$this->logger->emergency($this->baseLang->translateString("pocketmine.server.devBuild.error4", ["settings.enable-dev-builds"]));
+				$this->logger->emergency($this->baseLang->translateString("pocketmine.server.devBuild.error5", ["https://github.com/pmmp/PocketMine-MP/releases"]));
 				$this->forceShutdown();
 				return;
 			}
@@ -1638,7 +1619,7 @@ class Server{
 			$this->resourceManager = new ResourcePackManager($this->getDataPath() . "resource_packs" . DIRECTORY_SEPARATOR, $this->logger);
 
 			$this->pluginManager = new PluginManager($this, $this->commandMap, ((bool) $this->getProperty("plugins.legacy-data-dir", true)) ? null : $this->getDataPath() . "plugin_data" . DIRECTORY_SEPARATOR);
-			$this->pluginManager->subscribeToPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this->consoleSender);
+			PermissionManager::getInstance()->subscribeToPermission(Server::BROADCAST_CHANNEL_ADMINISTRATIVE, $this->consoleSender);
 			$this->profilingTickRate = (float) $this->getProperty("settings.profile-report-trigger", 20);
 			$this->pluginManager->registerInterface(new PharPluginLoader($this->autoloader));
 			$this->pluginManager->registerInterface(new ScriptPluginLoader());
@@ -1696,7 +1677,7 @@ class Server{
 			}
 
 			if($this->properties->hasChanged()){
-				$this->properties->save(true);
+				$this->properties->save();
 			}
 
 			if(!($this->getDefaultLevel() instanceof Level)){
@@ -1747,7 +1728,7 @@ class Server{
 		if(!is_array($recipients)){
 			/** @var Player[] $recipients */
 			$recipients = [];
-			foreach($this->pluginManager->getPermissionSubscriptions(self::BROADCAST_CHANNEL_USERS) as $permissible){
+			foreach(PermissionManager::getInstance()->getPermissionSubscriptions(self::BROADCAST_CHANNEL_USERS) as $permissible){
 				if($permissible instanceof Player and $permissible->hasPermission(self::BROADCAST_CHANNEL_USERS)){
 					$recipients[spl_object_hash($permissible)] = $permissible; // do not send messages directly, or some might be repeated
 				}
@@ -1773,7 +1754,7 @@ class Server{
 			/** @var Player[] $recipients */
 			$recipients = [];
 
-			foreach($this->pluginManager->getPermissionSubscriptions(self::BROADCAST_CHANNEL_USERS) as $permissible){
+			foreach(PermissionManager::getInstance()->getPermissionSubscriptions(self::BROADCAST_CHANNEL_USERS) as $permissible){
 				if($permissible instanceof Player and $permissible->hasPermission(self::BROADCAST_CHANNEL_USERS)){
 					$recipients[spl_object_hash($permissible)] = $permissible; // do not send messages directly, or some might be repeated
 				}
@@ -1803,7 +1784,7 @@ class Server{
 			/** @var Player[] $recipients */
 			$recipients = [];
 
-			foreach($this->pluginManager->getPermissionSubscriptions(self::BROADCAST_CHANNEL_USERS) as $permissible){
+			foreach(PermissionManager::getInstance()->getPermissionSubscriptions(self::BROADCAST_CHANNEL_USERS) as $permissible){
 				if($permissible instanceof Player and $permissible->hasPermission(self::BROADCAST_CHANNEL_USERS)){
 					$recipients[spl_object_hash($permissible)] = $permissible; // do not send messages directly, or some might be repeated
 				}
@@ -1828,7 +1809,7 @@ class Server{
 		/** @var CommandSender[] $recipients */
 		$recipients = [];
 		foreach(explode(";", $permissions) as $permission){
-			foreach($this->pluginManager->getPermissionSubscriptions($permission) as $permissible){
+			foreach(PermissionManager::getInstance()->getPermissionSubscriptions($permission) as $permissible){
 				if($permissible instanceof CommandSender and $permissible->hasPermission($permission)){
 					$recipients[spl_object_hash($permissible)] = $permissible; // do not send messages directly, or some might be repeated
 				}
@@ -1953,10 +1934,20 @@ class Server{
 	 *
 	 * @param CommandSender $sender
 	 * @param string        $commandLine
+	 * @param bool          $internal
 	 *
 	 * @return bool
 	 */
-	public function dispatchCommand(CommandSender $sender, string $commandLine) : bool{
+	public function dispatchCommand(CommandSender $sender, string $commandLine, bool $internal = false) : bool{
+		if(!$internal){
+			$this->pluginManager->callEvent($ev = new CommandEvent($sender, $commandLine));
+			if($ev->isCancelled()){
+				return false;
+			}
+
+			$commandLine = $ev->getCommand();
+		}
+
 		if($this->commandMap->dispatch($sender, $commandLine)){
 			return true;
 		}
@@ -1976,6 +1967,7 @@ class Server{
 
 		$this->pluginManager->disablePlugins();
 		$this->pluginManager->clearPlugins();
+		PermissionManager::getInstance()->clearPermissions();
 		$this->commandMap->clearCommands();
 
 		$this->logger->info("Reloading properties...");
@@ -2199,6 +2191,14 @@ class Server{
 
 			if($this->getProperty("auto-report.enabled", true) !== false){
 				$report = true;
+
+				$stamp = $this->getDataPath() . "crashdumps/.last_crash";
+				$crashInterval = 120; //2 minutes
+				if(file_exists($stamp) and !($report = (filemtime($stamp) + $crashInterval < time()))){
+					$this->logger->debug("Not sending crashdump due to last crash less than $crashInterval seconds ago");
+				}
+				@touch($stamp); //update file timestamp
+
 				$plugin = $dump->getData()["plugin"];
 				if(is_string($plugin)){
 					$p = $this->pluginManager->getPlugin($plugin);
@@ -2218,7 +2218,7 @@ class Server{
 
 				if($report){
 					$url = ($this->getProperty("auto-report.use-https", true) ? "https" : "http") . "://" . $this->getProperty("auto-report.host", "crash.pmmp.io") . "/submit/api";
-					$reply = Utils::postURL($url, [
+					$reply = Internet::postURL($url, [
 						"report" => "yes",
 						"name" => $this->getName() . " " . $this->getPocketMineVersion(),
 						"email" => "crash@pocketmine.net",
@@ -2241,6 +2241,12 @@ class Server{
 
 		$this->forceShutdown();
 		$this->isRunning = false;
+
+		//Force minimum uptime to be >= 120 seconds, to reduce the impact of spammy crash loops
+		$spacing = ((int) \pocketmine\START_TIME) - time() + 120;
+		if($spacing > 0){
+			sleep($spacing);
+		}
 		@Utils::kill(getmypid());
 		exit(1);
 	}
@@ -2313,7 +2319,7 @@ class Server{
 		$pk = new PlayerListPacket();
 		$pk->type = PlayerListPacket::TYPE_ADD;
 
-		$pk->entries[] = PlayerListEntry::createAdditionEntry($uuid, $entityId, $name, "", 0, $skin, $xboxUserId);
+		$pk->entries[] = PlayerListEntry::createAdditionEntry($uuid, $entityId, $name, $skin, $xboxUserId);
 
 		$this->broadcastPacket($players ?? $this->playerList, $pk);
 	}
@@ -2336,7 +2342,7 @@ class Server{
 		$pk = new PlayerListPacket();
 		$pk->type = PlayerListPacket::TYPE_ADD;
 		foreach($this->playerList as $player){
-			$pk->entries[] = PlayerListEntry::createAdditionEntry($player->getUniqueId(), $player->getId(), $player->getDisplayName(), "", 0, $player->getSkin(), $player->getXuid());
+			$pk->entries[] = PlayerListEntry::createAdditionEntry($player->getUniqueId(), $player->getId(), $player->getDisplayName(), $player->getSkin(), $player->getXuid());
 		}
 
 		$p->dataPacket($pk);
@@ -2352,7 +2358,11 @@ class Server{
 		}
 
 		//Do level ticks
-		foreach($this->getLevels() as $level){
+		foreach($this->levels as $k => $level){
+			if(!isset($this->levels[$k])){
+				// Level unloaded during the tick of a level earlier in this loop, perhaps by plugin
+				continue;
+			}
 			if($level->getTickRate() > $this->baseTickRate and --$level->tickRateCounter > 0){
 				continue;
 			}
@@ -2388,7 +2398,7 @@ class Server{
 			Timings::$worldSaveTimer->startTiming();
 			foreach($this->players as $index => $player){
 				if($player->spawned){
-					$player->save(true);
+					$player->save();
 				}elseif(!$player->isConnected()){
 					$this->removePlayer($player);
 				}
@@ -2525,13 +2535,9 @@ class Server{
 		}
 
 		if(($this->tickCounter & 0b111111111) === 0){
-			try{
-				$this->getPluginManager()->callEvent($this->queryRegenerateTask = new QueryRegenerateEvent($this, 5));
-				if($this->queryHandler !== null){
-					$this->queryHandler->regenerateInfo();
-				}
-			}catch(\Throwable $e){
-				$this->logger->logException($e);
+			$this->getPluginManager()->callEvent($this->queryRegenerateTask = new QueryRegenerateEvent($this, 5));
+			if($this->queryHandler !== null){
+				$this->queryHandler->regenerateInfo();
 			}
 		}
 

src/pocketmine/block/Bed.php

@@ -192,21 +192,25 @@ class Bed extends Transparent{
 
 	public function getDropsForCompatibleTool(Item $item) : array{
 		if($this->isHeadPart()){
-			$tile = $this->getLevel()->getTile($this);
-			if($tile instanceof TileBed){
-				return [
-					ItemFactory::get($this->getItemId(), $tile->getColor())
-				];
-			}else{
-				return [
-					ItemFactory::get($this->getItemId(), 14) //Red
-				];
-			}
+			return [$this->getItem()];
 		}
 
 		return [];
 	}
 
+	public function getPickedItem() : Item{
+		return $this->getItem();
+	}
+
+	private function getItem() : Item{
+		$tile = $this->getLevel()->getTile($this);
+		if($tile instanceof TileBed){
+			return ItemFactory::get($this->getItemId(), $tile->getColor());
+		}
+
+		return ItemFactory::get($this->getItemId(), 14); //Red
+	}
+
 	public function isAffectedBySilkTouch() : bool{
 		return false;
 	}

src/pocketmine/block/Block.php

@@ -109,6 +109,14 @@ class Block extends Position implements BlockIds, Metadatable{
 		return $this->itemId ?? $this->getId();
 	}
 
+	/**
+	 * @internal
+	 * @return int
+	 */
+	public function getRuntimeId() : int{
+		return BlockFactory::toStaticRuntimeId($this->getId(), $this->getDamage());
+	}
+
 	/**
 	 * @return int
 	 */

src/pocketmine/block/BlockFactory.php

@@ -330,6 +330,10 @@ class BlockFactory{
 		}
 	}
 
+	public static function isInit() : bool{
+		return self::$fullList !== null;
+	}
+
 	/**
 	 * Registers a block type into the index. Plugins may use this method to register new block types or override
 	 * existing ones.
@@ -411,6 +415,7 @@ class BlockFactory{
 	 * Returns whether a specified block ID is already registered in the block factory.
 	 *
 	 * @param int $id
+	 *
 	 * @return bool
 	 */
 	public static function isRegistered(int $id) : bool{
@@ -421,8 +426,8 @@ class BlockFactory{
 	public static function registerStaticRuntimeIdMappings() : void{
 		/** @var mixed[] $runtimeIdMap */
 		$runtimeIdMap = json_decode(file_get_contents(\pocketmine\RESOURCE_PATH . "runtimeid_table.json"), true);
-		foreach($runtimeIdMap as $obj){
-			self::registerMapping($obj["runtimeID"], $obj["id"], $obj["data"]);
+		foreach($runtimeIdMap as $k => $obj){
+			self::registerMapping($k, $obj["id"], $obj["data"]);
 		}
 	}
 

src/pocketmine/block/BrewingStand.php

@@ -23,12 +23,15 @@ declare(strict_types=1);
 
 namespace pocketmine\block;
 
+use pocketmine\item\Item;
 use pocketmine\item\TieredTool;
 
 class BrewingStand extends Transparent{
 
 	protected $id = self::BREWING_STAND_BLOCK;
 
+	protected $itemId = Item::BREWING_STAND;
+
 	public function __construct(int $meta = 0){
 		$this->meta = $meta;
 	}

src/pocketmine/block/Cake.php

@@ -35,6 +35,8 @@ class Cake extends Transparent implements FoodSource{
 
 	protected $id = self::CAKE_BLOCK;
 
+	protected $itemId = Item::CAKE;
+
 	public function __construct(int $meta = 0){
 		$this->meta = $meta;
 	}

src/pocketmine/block/DoubleSlab.php

@@ -47,4 +47,8 @@ abstract class DoubleSlab extends Solid{
 	public function isAffectedBySilkTouch() : bool{
 		return false;
 	}
+
+	public function getPickedItem() : Item{
+		return ItemFactory::get($this->getSlabId(), $this->getVariant());
+	}
 }

src/pocketmine/block/Farmland.php

@@ -111,4 +111,8 @@ class Farmland extends Transparent{
 	public function isAffectedBySilkTouch() : bool{
 		return false;
 	}
+
+	public function getPickedItem() : Item{
+		return ItemFactory::get(Item::DIRT);
+	}
 }

src/pocketmine/block/RedstoneOre.php

@@ -50,7 +50,8 @@ class RedstoneOre extends Solid{
 	}
 
 	public function onActivate(Item $item, Player $player = null) : bool{
-		return $this->getLevel()->setBlock($this, BlockFactory::get(Block::GLOWING_REDSTONE_ORE, $this->meta));
+		$this->getLevel()->setBlock($this, BlockFactory::get(Block::GLOWING_REDSTONE_ORE, $this->meta));
+		return false; //this shouldn't prevent block placement
 	}
 
 	public function onNearbyBlockChange() : void{

src/pocketmine/block/Skull.php

@@ -71,18 +71,20 @@ class Skull extends Flowable{
 		return true;
 	}
 
-	public function getDropsForCompatibleTool(Item $item) : array{
+	private function getItem() : Item{
 		$tile = $this->level->getTile($this);
-		if($tile instanceof TileSkull){
-			return [
-				ItemFactory::get(Item::SKULL, $tile->getType())
-			];
-		}
+		return ItemFactory::get(Item::SKULL, $tile instanceof TileSkull ? $tile->getType() : 0);
+	}
 
-		return [];
+	public function getDropsForCompatibleTool(Item $item) : array{
+		return [$this->getItem()];
 	}
 
 	public function isAffectedBySilkTouch() : bool{
 		return false;
 	}
+
+	public function getPickedItem() : Item{
+		return $this->getItem();
+	}
 }

src/pocketmine/block/TNT.php

@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace pocketmine\block;
 
 use pocketmine\entity\Entity;
+use pocketmine\entity\projectile\Arrow;
 use pocketmine\item\FlintSteel;
 use pocketmine\item\Item;
 use pocketmine\math\Vector3;
@@ -56,6 +57,16 @@ class TNT extends Solid{
 		return false;
 	}
 
+	public function hasEntityCollision() : bool{
+		return true;
+	}
+
+	public function onEntityCollide(Entity $entity) : void{
+		if($entity instanceof Arrow and $entity->isOnFire()){
+			$this->ignite();
+		}
+	}
+
 	public function ignite(int $fuse = 80){
 		$this->getLevel()->setBlock($this, BlockFactory::get(Block::AIR), true);
 

src/pocketmine/block/Thin.php

@@ -100,11 +100,7 @@ abstract class Thin extends Transparent{
 		}
 
 		//FIXME: currently there's no proper way to tell if a block is a full-block, so we check the bounding box size
-		$bbs = $block->getCollisionBoxes();
-		if(count($bbs) === 1){
-			return $bbs[0]->getAverageEdgeLength() >= 1;
-		}
-
-		return false;
+		$bb = $block->getBoundingBox();
+		return $bb !== null and $bb->getAverageEdgeLength() >= 1;
 	}
 }

src/pocketmine/block/Torch.php

@@ -55,7 +55,7 @@ class Torch extends Flowable{
 			5 => Vector3::SIDE_DOWN
 		];
 
-		if($this->getSide($faces[$side])->isTransparent() and !($side === Vector3::SIDE_DOWN and ($below->getId() === self::FENCE or $below->getId() === self::COBBLESTONE_WALL))){
+		if($this->getSide($faces[$side])->isTransparent() and !($faces[$side] === Vector3::SIDE_DOWN and ($below->getId() === self::FENCE or $below->getId() === self::COBBLESTONE_WALL))){
 			$this->getLevel()->useBreakOn($this);
 		}
 	}

src/pocketmine/command/Command.php

@@ -28,6 +28,7 @@ namespace pocketmine\command;
 
 use pocketmine\lang\TextContainer;
 use pocketmine\lang\TranslationContainer;
+use pocketmine\permission\PermissionManager;
 use pocketmine\Server;
 use pocketmine\timings\TimingsHandler;
 use pocketmine\utils\TextFormat;
@@ -293,7 +294,7 @@ abstract class Command{
 			$m = clone $message;
 			$result = "[" . $source->getName() . ": " . ($source->getServer()->getLanguage()->get($m->getText()) !== $m->getText() ? "%" : "") . $m->getText() . "]";
 
-			$users = $source->getServer()->getPluginManager()->getPermissionSubscriptions(Server::BROADCAST_CHANNEL_ADMINISTRATIVE);
+			$users = PermissionManager::getInstance()->getPermissionSubscriptions(Server::BROADCAST_CHANNEL_ADMINISTRATIVE);
 			$colored = TextFormat::GRAY . TextFormat::ITALIC . $result;
 
 			$m->setText($result);
@@ -301,7 +302,7 @@ abstract class Command{
 			$m->setText($colored);
 			$colored = clone $m;
 		}else{
-			$users = $source->getServer()->getPluginManager()->getPermissionSubscriptions(Server::BROADCAST_CHANNEL_ADMINISTRATIVE);
+			$users = PermissionManager::getInstance()->getPermissionSubscriptions(Server::BROADCAST_CHANNEL_ADMINISTRATIVE);
 			$result = new TranslationContainer("chat.type.admin", [$source->getName(), $message]);
 			$colored = new TranslationContainer(TextFormat::GRAY . TextFormat::ITALIC . "%chat.type.admin", [$source->getName(), $message]);
 		}

src/pocketmine/command/CommandMap.php

@@ -27,7 +27,7 @@ namespace pocketmine\command;
 interface CommandMap{
 
 	/**
-	 * @param string $fallbackPrefix
+	 * @param string    $fallbackPrefix
 	 * @param Command[] $commands
 	 */
 	public function registerAll(string $fallbackPrefix, array $commands);

src/pocketmine/command/CommandReader.php

@@ -25,6 +25,7 @@ namespace pocketmine\command;
 
 use pocketmine\snooze\SleeperNotifier;
 use pocketmine\Thread;
+use pocketmine\utils\Utils;
 
 class CommandReader extends Thread{
 
@@ -47,9 +48,9 @@ class CommandReader extends Thread{
 		$this->buffer = new \Threaded;
 		$this->notifier = $notifier;
 
-		$opts = getopt("", ["disable-readline"]);
+		$opts = getopt("", ["disable-readline", "enable-readline"]);
 
-		if(extension_loaded("readline") and !isset($opts["disable-readline"]) and !$this->isPipe(STDIN)){
+		if(extension_loaded("readline") and (Utils::getOS() === "win" ? isset($opts["enable-readline"]) : !isset($opts["disable-readline"])) and !$this->isPipe(STDIN)){
 			$this->type = self::TYPE_READLINE;
 		}
 	}
@@ -94,6 +95,7 @@ class CommandReader extends Thread{
 	 * Checks if the specified stream is a FIFO pipe.
 	 *
 	 * @param resource $stream
+	 *
 	 * @return bool
 	 */
 	private function isPipe($stream) : bool{

src/pocketmine/command/CommandSender.php

@@ -54,6 +54,7 @@ interface CommandSender extends Permissible{
 
 	/**
 	 * Sets the line height used for command output pagination for this command sender. `null` will reset it to default.
+	 *
 	 * @param int|null $height
 	 */
 	public function setScreenLineHeight(int $height = null);

src/pocketmine/command/ConsoleCommandSender.php

@@ -64,7 +64,7 @@ class ConsoleCommandSender implements CommandSender{
 	/**
 	 * @param Plugin $plugin
 	 * @param string $name
-	 * @param bool $value
+	 * @param bool   $value
 	 *
 	 * @return PermissionAttachment
 	 */

src/pocketmine/command/FormattedCommandAlias.php

@@ -59,7 +59,7 @@ class FormattedCommandAlias extends Command{
 		}
 
 		foreach($commands as $command){
-			$result |= Server::getInstance()->dispatchCommand($sender, $command);
+			$result |= Server::getInstance()->dispatchCommand($sender, $command, true);
 		}
 
 		return (bool) $result;

src/pocketmine/command/SimpleCommandMap.php

@@ -193,9 +193,9 @@ class SimpleCommandMap implements CommandMap{
 
 	/**
 	 * @param Command $command
-	 * @param bool $isAlias
-	 * @param string $fallbackPrefix
-	 * @param string $label
+	 * @param bool    $isAlias
+	 * @param string  $fallbackPrefix
+	 * @param string  $label
 	 *
 	 * @return bool
 	 */

src/pocketmine/command/defaults/TimingsCommand.php

@@ -30,6 +30,7 @@ use pocketmine\Player;
 use pocketmine\scheduler\BulkCurlTask;
 use pocketmine\Server;
 use pocketmine\timings\TimingsHandler;
+use pocketmine\utils\InternetException;
 
 class TimingsCommand extends VanillaCommand{
 
@@ -131,7 +132,7 @@ class TimingsCommand extends VanillaCommand{
 							return;
 						}
 						$result = $this->getResult()[0];
-						if($result instanceof \RuntimeException){
+						if($result instanceof InternetException){
 							$server->getLogger()->logException($result);
 							return;
 						}

src/pocketmine/entity/DataPropertyManager.php

@@ -143,7 +143,8 @@ class DataPropertyManager{
 	 */
 	public function getItem(int $key) : ?Item{
 		$value = $this->getPropertyValue($key, Entity::DATA_TYPE_SLOT);
-		assert($value instanceof Item  or $value === null);
+		assert($value instanceof Item or $value === null);
+
 		return $value;
 	}
 

src/pocketmine/entity/Effect.php

@@ -56,6 +56,7 @@ class Effect{
 	public const SATURATION = 23;
 	public const LEVITATION = 24; //TODO
 	public const FATAL_POISON = 25;
+	public const CONDUIT_POWER = 26;
 
 	/** @var Effect[] */
 	protected static $effects = [];
@@ -86,6 +87,7 @@ class Effect{
 		self::registerEffect(new Effect(Effect::SATURATION, "%potion.saturation", new Color(0xf8, 0x24, 0x23), false, 1));
 		self::registerEffect(new Effect(Effect::LEVITATION, "%potion.levitation", new Color(0xce, 0xff, 0xff)));
 		self::registerEffect(new Effect(Effect::FATAL_POISON, "%potion.poison", new Color(0x4e, 0x93, 0x31), true));
+		self::registerEffect(new Effect(Effect::CONDUIT_POWER, "%potion.conduitPower", new Color(0x1d, 0xc2, 0xd1)));
 	}
 
 	/**

src/pocketmine/entity/EffectInstance.php

@@ -81,6 +81,7 @@ class EffectInstance{
 
 	/**
 	 * @param int $duration
+	 *
 	 * @throws \InvalidArgumentException
 	 *
 	 * @return $this

src/pocketmine/entity/Entity.php

@@ -206,34 +206,38 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	public const DATA_FLAG_INTERESTED = 26;
 	public const DATA_FLAG_CHARGED = 27;
 	public const DATA_FLAG_TAMED = 28;
-	public const DATA_FLAG_LEASHED = 29;
-	public const DATA_FLAG_SHEARED = 30;
-	public const DATA_FLAG_GLIDING = 31;
-	public const DATA_FLAG_ELDER = 32;
-	public const DATA_FLAG_MOVING = 33;
-	public const DATA_FLAG_BREATHING = 34;
-	public const DATA_FLAG_CHESTED = 35;
-	public const DATA_FLAG_STACKABLE = 36;
-	public const DATA_FLAG_SHOWBASE = 37;
-	public const DATA_FLAG_REARING = 38;
-	public const DATA_FLAG_VIBRATING = 39;
-	public const DATA_FLAG_IDLING = 40;
-	public const DATA_FLAG_EVOKER_SPELL = 41;
-	public const DATA_FLAG_CHARGE_ATTACK = 42;
-	public const DATA_FLAG_WASD_CONTROLLED = 43;
-	public const DATA_FLAG_CAN_POWER_JUMP = 44;
-	public const DATA_FLAG_LINGER = 45;
-	public const DATA_FLAG_HAS_COLLISION = 46;
-	public const DATA_FLAG_AFFECTED_BY_GRAVITY = 47;
-	public const DATA_FLAG_FIRE_IMMUNE = 48;
-	public const DATA_FLAG_DANCING = 49;
-	public const DATA_FLAG_ENCHANTED = 50;
-	public const DATA_FLAG_SHOW_TRIDENT_ROPE = 51; // tridents show an animated rope when enchanted with loyalty after they are thrown and return to their owner. To be combined with DATA_OWNER_EID
-	public const DATA_FLAG_CONTAINER_PRIVATE = 52; //inventory is private, doesn't drop contents when killed if true
-	//53 TransformationComponent
-	public const DATA_FLAG_SPIN_ATTACK = 54;
-	public const DATA_FLAG_SWIMMING = 55;
-	public const DATA_FLAG_BRIBED = 56; //dolphins have this set when they go to find treasure for the player
+	public const DATA_FLAG_ORPHANED = 29;
+	public const DATA_FLAG_LEASHED = 30;
+	public const DATA_FLAG_SHEARED = 31;
+	public const DATA_FLAG_GLIDING = 32;
+	public const DATA_FLAG_ELDER = 33;
+	public const DATA_FLAG_MOVING = 34;
+	public const DATA_FLAG_BREATHING = 35;
+	public const DATA_FLAG_CHESTED = 36;
+	public const DATA_FLAG_STACKABLE = 37;
+	public const DATA_FLAG_SHOWBASE = 38;
+	public const DATA_FLAG_REARING = 39;
+	public const DATA_FLAG_VIBRATING = 40;
+	public const DATA_FLAG_IDLING = 41;
+	public const DATA_FLAG_EVOKER_SPELL = 42;
+	public const DATA_FLAG_CHARGE_ATTACK = 43;
+	public const DATA_FLAG_WASD_CONTROLLED = 44;
+	public const DATA_FLAG_CAN_POWER_JUMP = 45;
+	public const DATA_FLAG_LINGER = 46;
+	public const DATA_FLAG_HAS_COLLISION = 47;
+	public const DATA_FLAG_AFFECTED_BY_GRAVITY = 48;
+	public const DATA_FLAG_FIRE_IMMUNE = 49;
+	public const DATA_FLAG_DANCING = 50;
+	public const DATA_FLAG_ENCHANTED = 51;
+	public const DATA_FLAG_SHOW_TRIDENT_ROPE = 52; // tridents show an animated rope when enchanted with loyalty after they are thrown and return to their owner. To be combined with DATA_OWNER_EID
+	public const DATA_FLAG_CONTAINER_PRIVATE = 53; //inventory is private, doesn't drop contents when killed if true
+	//54 TransformationComponent
+	public const DATA_FLAG_SPIN_ATTACK = 55;
+	public const DATA_FLAG_SWIMMING = 56;
+	public const DATA_FLAG_BRIBED = 57; //dolphins have this set when they go to find treasure for the player
+	public const DATA_FLAG_PREGNANT = 58;
+	public const DATA_FLAG_LAYING_EGG = 59;
+	//60 ??
 
 	public static $entityCount = 1;
 	/** @var Entity[] */
@@ -260,8 +264,8 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 		Entity::registerEntity(Snowball::class, false, ['Snowball', 'minecraft:snowball']);
 		Entity::registerEntity(SplashPotion::class, false, ['ThrownPotion', 'minecraft:potion', 'thrownpotion']);
 		Entity::registerEntity(Squid::class, false, ['Squid', 'minecraft:squid']);
-		Entity::registerEntity(Villager::class, false, ['Villager',	'minecraft:villager']);
-		Entity::registerEntity(Zombie::class, false, ['Zombie',	'minecraft:zombie']);
+		Entity::registerEntity(Villager::class, false, ['Villager', 'minecraft:villager']);
+		Entity::registerEntity(Zombie::class, false, ['Zombie', 'minecraft:zombie']);
 
 		Entity::registerEntity(Human::class, true);
 
@@ -342,7 +346,7 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	 *
 	 * @return CompoundTag
 	 */
-	public static function createBaseNBT(Vector3 $pos, ?Vector3 $motion = null , float $yaw = 0.0, float $pitch = 0.0) : CompoundTag{
+	public static function createBaseNBT(Vector3 $pos, ?Vector3 $motion = null, float $yaw = 0.0, float $pitch = 0.0) : CompoundTag{
 		return new CompoundTag("", [
 			new ListTag("Pos", [
 				new DoubleTag("", $pos->x),
@@ -608,6 +612,20 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 		$this->propertyManager->setByte(self::DATA_ALWAYS_SHOW_NAMETAG, $value ? 1 : 0);
 	}
 
+	/**
+	 * @return string|null
+	 */
+	public function getScoreTag() : ?string{
+		return $this->propertyManager->getString(self::DATA_SCORE_TAG);
+	}
+
+	/**
+	 * @param string $score
+	 */
+	public function setScoreTag(string $score) : void{
+		$this->propertyManager->setString(self::DATA_SCORE_TAG, $score);
+	}
+
 	/**
 	 * @return float
 	 */
@@ -733,7 +751,7 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	public function getOwningEntity() : ?Entity{
 		$eid = $this->getOwningEntityId();
 		if($eid !== null){
-			return $this->server->findEntity($eid, $this->level);
+			return $this->server->findEntity($eid);
 		}
 
 		return null;
@@ -773,7 +791,7 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	public function getTargetEntity() : ?Entity{
 		$eid = $this->getTargetEntityId();
 		if($eid !== null){
-			return $this->server->findEntity($eid, $this->level);
+			return $this->server->findEntity($eid);
 		}
 
 		return null;
@@ -918,6 +936,7 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	 * Called to tick entities while dead. Returns whether the entity should be flagged for despawn yet.
 	 *
 	 * @param int $tickDiff
+	 *
 	 * @return bool
 	 */
 	protected function onDeathUpdate(int $tickDiff) : bool{
@@ -1376,7 +1395,6 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 		Timings::$timerEntityBaseTick->stopTiming();
 
 
-
 		$this->timings->stopTiming();
 
 		//if($this->isStatic())
@@ -2057,6 +2075,7 @@ abstract class Entity extends Location implements Metadatable, EntityIds{
 	 * Wrapper around {@link Entity#getDataFlag} for generic data flag reading.
 	 *
 	 * @param int $flagId
+	 *
 	 * @return bool
 	 */
 	public function getGenericFlag(int $flagId) : bool{

src/pocketmine/entity/Human.php

@@ -34,6 +34,7 @@ use pocketmine\inventory\EntityInventoryEventProcessor;
 use pocketmine\inventory\InventoryHolder;
 use pocketmine\inventory\PlayerInventory;
 use pocketmine\item\Consumable;
+use pocketmine\item\Durable;
 use pocketmine\item\enchantment\Enchantment;
 use pocketmine\item\FoodSource;
 use pocketmine\item\Item;
@@ -518,6 +519,42 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 		return $this->xpCooldown === 0;
 	}
 
+	public function onPickupXp(int $xpValue) : void{
+		static $mainHandIndex = -1;
+
+		//TODO: replace this with a more generic equipment getting/setting interface
+		/** @var Durable[] $equipment */
+		$equipment = [];
+
+		if(($item = $this->inventory->getItemInHand()) instanceof Durable and $item->hasEnchantment(Enchantment::MENDING)){
+			$equipment[$mainHandIndex] = $item;
+		}
+		//TODO: check offhand
+		foreach($this->armorInventory->getContents() as $k => $item){
+			if($item instanceof Durable and $item->hasEnchantment(Enchantment::MENDING)){
+				$equipment[$k] = $item;
+			}
+		}
+
+		if(!empty($equipment)){
+			$repairItem = $equipment[$k = array_rand($equipment)];
+			if($repairItem->getDamage() > 0){
+				$repairAmount = min($repairItem->getDamage(), $xpValue * 2);
+				$repairItem->setDamage($repairItem->getDamage() - $repairAmount);
+				$xpValue -= (int) ceil($repairAmount / 2);
+
+				if($k === $mainHandIndex){
+					$this->inventory->setItemInHand($repairItem);
+				}else{
+					$this->armorInventory->setItem($k, $repairItem);
+				}
+			}
+		}
+
+		$this->addXp($xpValue); //this will still get fired even if the value is 0 due to mending, to play sounds
+		$this->resetXpCooldown();
+	}
+
 	/**
 	 * Sets the duration in ticks until the human can pick up another XP orb.
 	 *
@@ -804,7 +841,7 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 			/* we don't use Server->updatePlayerListData() because that uses batches, which could cause race conditions in async compression mode */
 			$pk = new PlayerListPacket();
 			$pk->type = PlayerListPacket::TYPE_ADD;
-			$pk->entries = [PlayerListEntry::createAdditionEntry($this->uuid, $this->id, $this->getName(), $this->getName(), 0, $this->skin)];
+			$pk->entries = [PlayerListEntry::createAdditionEntry($this->uuid, $this->id, $this->getName(), $this->skin)];
 			$player->dataPacket($pk);
 		}
 
@@ -851,6 +888,7 @@ class Human extends Creature implements ProjectileSource, InventoryHolder{
 	 * Wrapper around {@link Entity#getDataFlag} for player-specific data flag reading.
 	 *
 	 * @param int $flagId
+	 *
 	 * @return bool
 	 */
 	public function getPlayerFlag(int $flagId) : bool{

src/pocketmine/entity/Living.php

@@ -34,6 +34,7 @@ use pocketmine\inventory\ArmorInventory;
 use pocketmine\inventory\ArmorInventoryEventProcessor;
 use pocketmine\item\Armor;
 use pocketmine\item\Consumable;
+use pocketmine\item\Durable;
 use pocketmine\item\enchantment\Enchantment;
 use pocketmine\item\Item;
 use pocketmine\math\Vector3;
@@ -328,6 +329,7 @@ abstract class Living extends Entity implements Damageable{
 
 	/**
 	 * Sends the mob's potion effects to the specified player.
+	 *
 	 * @param Player $player
 	 */
 	public function sendPotionEffects(Player $player) : void{
@@ -476,6 +478,26 @@ abstract class Living extends Entity implements Damageable{
 	protected function applyPostDamageEffects(EntityDamageEvent $source) : void{
 		$this->setAbsorption(max(0, $this->getAbsorption() + $source->getModifier(EntityDamageEvent::MODIFIER_ABSORPTION)));
 		$this->damageArmor($source->getBaseDamage());
+
+		if($source instanceof EntityDamageByEntityEvent){
+			$damage = 0;
+			foreach($this->armorInventory->getContents() as $k => $item){
+				if($item instanceof Armor and ($thornsLevel = $item->getEnchantmentLevel(Enchantment::THORNS)) > 0){
+					if(mt_rand(0, 99) < $thornsLevel * 15){
+						$this->damageItem($item, 3);
+						$damage += ($thornsLevel > 10 ? $thornsLevel - 10 : 1 + mt_rand(0, 3));
+					}else{
+						$this->damageItem($item, 1); //thorns causes an extra +1 durability loss even if it didn't activate
+					}
+
+					$this->armorInventory->setItem($k, $item);
+				}
+			}
+
+			if($damage > 0){
+				$source->getDamager()->attack(new EntityDamageByEntityEvent($this, $source->getDamager(), EntityDamageEvent::CAUSE_MAGIC, $damage));
+			}
+		}
 	}
 
 	/**
@@ -490,16 +512,20 @@ abstract class Living extends Entity implements Damageable{
 		$armor = $this->armorInventory->getContents(true);
 		foreach($armor as $item){
 			if($item instanceof Armor){
-				$item->applyDamage($durabilityRemoved);
-				if($item->isBroken()){
-					$this->level->broadcastLevelSoundEvent($this, LevelSoundEventPacket::SOUND_BREAK);
-				}
+				$this->damageItem($item, $durabilityRemoved);
 			}
 		}
 
 		$this->armorInventory->setContents($armor);
 	}
 
+	private function damageItem(Durable $item, int $durabilityRemoved) : void{
+		$item->applyDamage($durabilityRemoved);
+		if($item->isBroken()){
+			$this->level->broadcastLevelSoundEvent($this, LevelSoundEventPacket::SOUND_BREAK);
+		}
+	}
+
 	public function attack(EntityDamageEvent $source) : void{
 		if($this->attackTime > 0 or $this->noDamageTicks > 0){
 			$lastCause = $this->getLastDamageCause();
@@ -535,7 +561,7 @@ abstract class Living extends Entity implements Damageable{
 			return;
 		}
 
-		$this->attackTime = 10; //0.5 seconds cooldown
+		$this->attackTime = $source->getAttackCooldown();
 
 		if($source instanceof EntityDamageByEntityEvent){
 			$e = $source->getDamager();
@@ -629,24 +655,19 @@ abstract class Living extends Entity implements Damageable{
 
 		$hasUpdate = parent::entityBaseTick($tickDiff);
 
-		if($this->doEffectsTick($tickDiff)){
-			$hasUpdate = true;
-		}
-
 		if($this->isAlive()){
+			if($this->doEffectsTick($tickDiff)){
+				$hasUpdate = true;
+			}
+
 			if($this->isInsideOfSolid()){
 				$hasUpdate = true;
 				$ev = new EntityDamageEvent($this, EntityDamageEvent::CAUSE_SUFFOCATION, 1);
 				$this->attack($ev);
 			}
 
-			if(!$this->canBreathe()){
-				$this->setBreathing(false);
-				$this->doAirSupplyTick($tickDiff);
+			if($this->doAirSupplyTick($tickDiff)){
 				$hasUpdate = true;
-			}elseif(!$this->isBreathing()){
-				$this->setBreathing(true);
-				$this->setAirSupplyTicks($this->getMaxAirSupplyTicks());
 			}
 		}
 
@@ -675,22 +696,42 @@ abstract class Living extends Entity implements Damageable{
 	}
 
 	/**
-	 * Ticks the entity's air supply when it cannot breathe.
+	 * Ticks the entity's air supply, consuming it when underwater and regenerating it when out of water.
+	 *
 	 * @param int $tickDiff
+	 *
+	 * @return bool
 	 */
-	protected function doAirSupplyTick(int $tickDiff) : void{
-		if(($respirationLevel = $this->armorInventory->getHelmet()->getEnchantmentLevel(Enchantment::RESPIRATION)) <= 0 or
-			lcg_value() <= (1 / ($respirationLevel + 1))
-		){
-			$ticks = $this->getAirSupplyTicks() - $tickDiff;
+	protected function doAirSupplyTick(int $tickDiff) : bool{
+		$ticks = $this->getAirSupplyTicks();
+		$oldTicks = $ticks;
+		if(!$this->canBreathe()){
+			$this->setBreathing(false);
 
-			if($ticks <= -20){
-				$this->setAirSupplyTicks(0);
-				$this->onAirExpired();
-			}else{
-				$this->setAirSupplyTicks($ticks);
+			if(($respirationLevel = $this->armorInventory->getHelmet()->getEnchantmentLevel(Enchantment::RESPIRATION)) <= 0 or
+				lcg_value() <= (1 / ($respirationLevel + 1))
+			){
+				$ticks -= $tickDiff;
+				if($ticks <= -20){
+					$ticks = 0;
+					$this->onAirExpired();
+				}
+			}
+		}elseif(!$this->isBreathing()){
+			if($ticks < ($max = $this->getMaxAirSupplyTicks())){
+				$ticks += $tickDiff * 5;
+			}
+			if($ticks >= $max){
+				$ticks = $max;
+				$this->setBreathing(true);
 			}
 		}
+
+		if($ticks !== $oldTicks){
+			$this->setAirSupplyTicks($ticks);
+		}
+
+		return $ticks !== $oldTicks;
 	}
 
 	/**
@@ -698,7 +739,7 @@ abstract class Living extends Entity implements Damageable{
 	 * @return bool
 	 */
 	public function canBreathe() : bool{
-		return $this->hasEffect(Effect::WATER_BREATHING) or !$this->isUnderwater();
+		return $this->hasEffect(Effect::WATER_BREATHING) or $this->hasEffect(Effect::CONDUIT_POWER) or !$this->isUnderwater();
 	}
 
 	/**
@@ -731,6 +772,7 @@ abstract class Living extends Entity implements Damageable{
 
 	/**
 	 * Sets the number of air ticks left in the entity's air supply.
+	 *
 	 * @param int $ticks
 	 */
 	public function setAirSupplyTicks(int $ticks) : void{
@@ -747,6 +789,7 @@ abstract class Living extends Entity implements Damageable{
 
 	/**
 	 * Sets the maximum amount of air ticks the air supply can hold.
+	 *
 	 * @param int $ticks
 	 */
 	public function setMaxAirSupplyTicks(int $ticks) : void{

src/pocketmine/entity/object/ExperienceOrb.php

@@ -147,7 +147,7 @@ class ExperienceOrb extends Entity{
 			return null;
 		}
 
-		$entity = $this->server->findEntity($this->targetPlayerRuntimeId, $this->level);
+		$entity = $this->server->findEntity($this->targetPlayerRuntimeId);
 		if($entity instanceof Human){
 			return $entity;
 		}
@@ -204,10 +204,7 @@ class ExperienceOrb extends Entity{
 			if($currentTarget->canPickupXp() and $this->boundingBox->intersectsWith($currentTarget->getBoundingBox())){
 				$this->flagForDespawn();
 
-				$currentTarget->addXp($this->getXpValue());
-				$currentTarget->resetXpCooldown();
-
-				//TODO: check Mending enchantment
+				$currentTarget->onPickupXp($this->getXpValue());
 			}
 		}
 

src/pocketmine/entity/object/FallingBlock.php

@@ -71,7 +71,7 @@ class FallingBlock extends Entity{
 
 		$this->block = BlockFactory::get($blockId, $damage);
 
-		$this->propertyManager->setInt(self::DATA_VARIANT, BlockFactory::toStaticRuntimeId($this->block->getId(), $this->block->getDamage()));
+		$this->propertyManager->setInt(self::DATA_VARIANT, $this->block->getRuntimeId());
 	}
 
 	public function canCollideWith(Entity $entity) : bool{

src/pocketmine/entity/object/ItemEntity.php

@@ -73,6 +73,9 @@ class ItemEntity extends Entity{
 		}
 
 		$this->item = Item::nbtDeserialize($itemTag);
+		if($this->item->isNull()){
+			throw new \UnexpectedValueException("Item for " . get_class($this) . " is invalid");
+		}
 
 
 		$this->server->getPluginManager()->callEvent(new ItemSpawnEvent($this));
@@ -205,7 +208,7 @@ class ItemEntity extends Entity{
 		$item = $this->getItem();
 		$playerInventory = $player->getInventory();
 
-		if(!($item instanceof Item) or ($player->isSurvival() and !$playerInventory->canAddItem($item))){
+		if($player->isSurvival() and !$playerInventory->canAddItem($item)){
 			return;
 		}
 

src/pocketmine/entity/object/PaintingMotive.php

@@ -73,6 +73,7 @@ class PaintingMotive{
 
 	/**
 	 * @param string $name
+	 *
 	 * @return PaintingMotive|null
 	 */
 	public static function getMotiveByName(string $name) : ?PaintingMotive{

src/pocketmine/entity/projectile/Arrow.php

@@ -40,13 +40,26 @@ use pocketmine\Player;
 class Arrow extends Projectile{
 	public const NETWORK_ID = self::ARROW;
 
+	public const PICKUP_NONE = 0;
+	public const PICKUP_ANY = 1;
+	public const PICKUP_CREATIVE = 2;
+
+	private const TAG_PICKUP = "pickup"; //TAG_Byte
+
 	public $width = 0.25;
 	public $height = 0.25;
 
 	protected $gravity = 0.05;
 	protected $drag = 0.01;
 
-	protected $damage = 2;
+	/** @var float */
+	protected $damage = 2.0;
+
+	/** @var int */
+	protected $pickupMode = self::PICKUP_ANY;
+
+	/** @var float */
+	protected $punchKnockback = 0.0;
 
 	/** @var int */
 	protected $collideTicks = 0;
@@ -58,11 +71,15 @@ class Arrow extends Projectile{
 
 	protected function initEntity() : void{
 		parent::initEntity();
+
+		$this->pickupMode = $this->namedtag->getByte(self::TAG_PICKUP, self::PICKUP_ANY, true);
 		$this->collideTicks = $this->namedtag->getShort("life", $this->collideTicks);
 	}
 
 	public function saveNBT() : void{
 		parent::saveNBT();
+
+		$this->namedtag->setByte(self::TAG_PICKUP, $this->pickupMode, true);
 		$this->namedtag->setShort("life", $this->collideTicks);
 	}
 
@@ -83,6 +100,20 @@ class Arrow extends Projectile{
 		}
 	}
 
+	/**
+	 * @return float
+	 */
+	public function getPunchKnockback() : float{
+		return $this->punchKnockback;
+	}
+
+	/**
+	 * @param float $punchKnockback
+	 */
+	public function setPunchKnockback(float $punchKnockback) : void{
+		$this->punchKnockback = $punchKnockback;
+	}
+
 	public function entityBaseTick(int $tickDiff = 1) : bool{
 		if($this->closed){
 			return false;
@@ -113,6 +144,31 @@ class Arrow extends Projectile{
 		$this->broadcastEntityEvent(EntityEventPacket::ARROW_SHAKE, 7); //7 ticks
 	}
 
+	protected function onHitEntity(Entity $entityHit, RayTraceResult $hitResult) : void{
+		parent::onHitEntity($entityHit, $hitResult);
+		if($this->punchKnockback > 0){
+			$horizontalSpeed = sqrt($this->motion->x ** 2 + $this->motion->z ** 2);
+			if($horizontalSpeed > 0){
+				$multiplier = $this->punchKnockback * 0.6 / $horizontalSpeed;
+				$entityHit->setMotion($entityHit->getMotion()->add($this->motion->x * $multiplier, 0.1, $this->motion->z * $multiplier));
+			}
+		}
+	}
+
+	/**
+	 * @return int
+	 */
+	public function getPickupMode() : int{
+		return $this->pickupMode;
+	}
+
+	/**
+	 * @param int $pickupMode
+	 */
+	public function setPickupMode(int $pickupMode) : void{
+		$this->pickupMode = $pickupMode;
+	}
+
 	public function onCollideWithPlayer(Player $player) : void{
 		if($this->blockHit === null){
 			return;
@@ -125,7 +181,12 @@ class Arrow extends Projectile{
 			return;
 		}
 
-		$this->server->getPluginManager()->callEvent($ev = new InventoryPickupArrowEvent($playerInventory, $this));
+		$ev = new InventoryPickupArrowEvent($playerInventory, $this);
+		if($this->pickupMode === self::PICKUP_NONE or ($this->pickupMode === self::PICKUP_CREATIVE and !$player->isCreative())){
+			$ev->setCancelled();
+		}
+
+		$this->server->getPluginManager()->callEvent($ev);
 		if($ev->isCancelled()){
 			return;
 		}

src/pocketmine/entity/projectile/Projectile.php

@@ -46,7 +46,8 @@ abstract class Projectile extends Entity{
 
 	public const DATA_SHOOTER_ID = 17;
 
-	protected $damage = 0;
+	/** @var float */
+	protected $damage = 0.0;
 
 	/** @var Vector3|null */
 	protected $blockHit;
@@ -73,6 +74,7 @@ abstract class Projectile extends Entity{
 
 		$this->setMaxHealth(1);
 		$this->setHealth(1);
+		$this->damage = $this->namedtag->getDouble("damage", $this->damage);
 
 		do{
 			$blockHit = null;
@@ -111,6 +113,25 @@ abstract class Projectile extends Entity{
 		return false;
 	}
 
+	/**
+	 * Returns the base damage applied on collision. This is multiplied by the projectile's speed to give a result
+	 * damage.
+	 *
+	 * @return float
+	 */
+	public function getBaseDamage() : float{
+		return $this->damage;
+	}
+
+	/**
+	 * Sets the base amount of damage applied by the projectile.
+	 *
+	 * @param float $damage
+	 */
+	public function setBaseDamage(float $damage) : void{
+		$this->damage = $damage;
+	}
+
 	/**
 	 * Returns the amount of damage this projectile will deal to the entity it hits.
 	 * @return int
@@ -122,6 +143,8 @@ abstract class Projectile extends Entity{
 	public function saveNBT() : void{
 		parent::saveNBT();
 
+		$this->namedtag->setDouble("damage", $this->damage);
+
 		if($this->blockHit !== null){
 			$this->namedtag->setInt("tileX", $this->blockHit->x);
 			$this->namedtag->setInt("tileY", $this->blockHit->y);
@@ -137,17 +160,19 @@ abstract class Projectile extends Entity{
 		return true;
 	}
 
-	public function hasMovementUpdate() : bool{
-		$parent = parent::hasMovementUpdate();
-		if($parent and $this->blockHit !== null){
+	public function onNearbyBlockChange() : void{
+		if($this->blockHit !== null){
 			$blockIn = $this->level->getBlockAt($this->blockHit->x, $this->blockHit->y, $this->blockHit->z);
-
-			if($blockIn->getId() === $this->blockHitId and $blockIn->getDamage() === $this->blockHitData){
-				return false;
+			if($blockIn->getId() !== $this->blockHitId or $blockIn->getDamage() !== $this->blockHitData){
+				$this->blockHit = $this->blockHitId = $this->blockHitData = null;
 			}
 		}
 
-		return $parent;
+		parent::onNearbyBlockChange();
+	}
+
+	public function hasMovementUpdate() : bool{
+		return $this->blockHit === null and parent::hasMovementUpdate();
 	}
 
 	public function move(float $dx, float $dy, float $dz) : void{

src/pocketmine/entity/projectile/SplashPotion.php

@@ -27,8 +27,8 @@ use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
 use pocketmine\entity\EffectInstance;
 use pocketmine\entity\Living;
-use pocketmine\event\entity\ProjectileHitEntityEvent;
 use pocketmine\event\entity\ProjectileHitBlockEvent;
+use pocketmine\event\entity\ProjectileHitEntityEvent;
 use pocketmine\event\entity\ProjectileHitEvent;
 use pocketmine\item\Potion;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
@@ -151,6 +151,7 @@ class SplashPotion extends Throwable{
 
 	/**
 	 * Sets whether this splash potion will create an area-effect-cloud when it lands.
+	 *
 	 * @param bool $value
 	 */
 	public function setLinger(bool $value = true) : void{

src/pocketmine/entity/utils/ExperienceUtils.php

@@ -31,6 +31,7 @@ abstract class ExperienceUtils{
 	 * Calculates and returns the amount of XP needed to get from level 0 to level $level
 	 *
 	 * @param int $level
+	 *
 	 * @return int
 	 */
 	public static function getXpToReachLevel(int $level) : int{

src/pocketmine/event/Listener.php

@@ -23,6 +23,37 @@ declare(strict_types=1);
 
 namespace pocketmine\event;
 
+use pocketmine\plugin\PluginManager;
+
+/**
+ * Classes implementing this interface can be registered to receive called Events.
+ * @see PluginManager::registerEvents()
+ *
+ * A function in a Listener class must meet the following criteria to be registered as an event handler:
+ *
+ * - MUST be public
+ * - MUST NOT be static
+ * - MUST accept EXACTLY ONE class parameter which:
+ *   - MUST be a VALID class extending Event
+ *   - MUST NOT be abstract, UNLESS it has an `@allowHandle` annotation
+ *
+ * Event handlers do not have to have any particular name - they are detected using reflection.
+ * They SHOULD NOT return any values (but this is not currently enforced).
+ *
+ * Functions which meet the criteria can have the following annotations in their doc comments:
+ *
+ * - `@notHandler`: Marks a function as NOT being an event handler. Only needed if the function meets the above criteria.
+ * - `@softDepend [PluginName]`: Handler WILL NOT be registered if its event doesn't exist. Useful for soft-depending
+ *     on plugin events. Plugin name is optional.
+ *     Example: `@softDepend SimpleAuth`
+ * - `@ignoreCancelled`: Cancelled events WILL NOT be passed to this handler.
+ * - `@priority <PRIORITY>`: Sets the priority at which this event handler will receive events.
+ *     Example: `@priority HIGHEST`
+ *     @see EventPriority for a list of possible options.
+ *
+ * Event handlers will receive any instanceof the Event class they have chosen to receive. For example, an
+ * EntityDamageEvent handler will also receive any subclass of EntityDamageEvent.
+ */
 interface Listener{
 
 }

src/pocketmine/event/entity/EntityDamageByChildEntityEvent.php

@@ -51,6 +51,6 @@ class EntityDamageByChildEntityEvent extends EntityDamageByEntityEvent{
 	 * @return Entity|null
 	 */
 	public function getChild() : ?Entity{
-		return $this->getEntity()->getLevel()->getServer()->findEntity($this->childEntityEid, $this->getEntity()->getLevel());
+		return $this->getEntity()->getLevel()->getServer()->findEntity($this->childEntityEid);
 	}
 }

src/pocketmine/event/entity/EntityDamageByEntityEvent.php

@@ -69,7 +69,7 @@ class EntityDamageByEntityEvent extends EntityDamageEvent{
 	 * @return Entity|null
 	 */
 	public function getDamager() : ?Entity{
-		return $this->getEntity()->getLevel()->getServer()->findEntity($this->damagerEntityId, $this->getEntity()->getLevel());
+		return $this->getEntity()->getLevel()->getServer()->findEntity($this->damagerEntityId);
 	}
 
 	/**

src/pocketmine/event/entity/EntityDamageEvent.php

@@ -38,6 +38,7 @@ class EntityDamageEvent extends EntityEvent implements Cancellable{
 	public const MODIFIER_ARMOR_ENCHANTMENTS = 6;
 	public const MODIFIER_CRITICAL = 7;
 	public const MODIFIER_TOTEM = 8;
+	public const MODIFIER_WEAPON_ENCHANTMENTS = 9;
 
 	public const CAUSE_CONTACT = 0;
 	public const CAUSE_ENTITY_ATTACK = 1;
@@ -68,6 +69,9 @@ class EntityDamageEvent extends EntityEvent implements Cancellable{
 	/** @var float[] */
 	private $originals;
 
+	/** @var int */
+	private $attackCooldown = 10;
+
 
 	/**
 	 * @param Entity        $entity
@@ -196,4 +200,24 @@ class EntityDamageEvent extends EntityEvent implements Cancellable{
 
 		return true;
 	}
+
+	/**
+	 * Returns the cooldown in ticks before the target entity can be attacked again.
+	 *
+	 * @return int
+	 */
+	public function getAttackCooldown() : int{
+		return $this->attackCooldown;
+	}
+
+	/**
+	 * Sets the cooldown in ticks before the target entity can be attacked again.
+	 *
+	 * NOTE: This value is not used in non-Living entities
+	 *
+	 * @param int $attackCooldown
+	 */
+	public function setAttackCooldown(int $attackCooldown) : void{
+		$this->attackCooldown = $attackCooldown;
+	}
 }

src/pocketmine/event/inventory/FurnaceBurnEvent.php

@@ -40,8 +40,8 @@ class FurnaceBurnEvent extends BlockEvent implements Cancellable{
 
 	/**
 	 * @param Furnace $furnace
-	 * @param Item $fuel
-	 * @param int $burnTime
+	 * @param Item    $fuel
+	 * @param int     $burnTime
 	 */
 	public function __construct(Furnace $furnace, Item $fuel, int $burnTime){
 		parent::__construct($furnace->getBlock());

src/pocketmine/event/inventory/FurnaceSmeltEvent.php

@@ -38,8 +38,8 @@ class FurnaceSmeltEvent extends BlockEvent implements Cancellable{
 
 	/**
 	 * @param Furnace $furnace
-	 * @param Item $source
-	 * @param Item $result
+	 * @param Item    $source
+	 * @param Item    $result
 	 */
 	public function __construct(Furnace $furnace, Item $source, Item $result){
 		parent::__construct($furnace->getBlock());

src/pocketmine/event/player/PlayerChangeSkinEvent.php

@@ -63,6 +63,7 @@ class PlayerChangeSkinEvent extends PlayerEvent implements Cancellable{
 
 	/**
 	 * @param Skin $skin
+	 *
 	 * @throws \InvalidArgumentException if the specified skin is not valid
 	 */
 	public function setNewSkin(Skin $skin) : void{

src/pocketmine/event/player/PlayerChatEvent.php

@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace pocketmine\event\player;
 
 use pocketmine\event\Cancellable;
+use pocketmine\permission\PermissionManager;
 use pocketmine\Player;
 use pocketmine\Server;
 
@@ -55,7 +56,7 @@ class PlayerChatEvent extends PlayerEvent implements Cancellable{
 		$this->format = $format;
 
 		if($recipients === null){
-			$this->recipients = Server::getInstance()->getPluginManager()->getPermissionSubscriptions(Server::BROADCAST_CHANNEL_USERS);
+			$this->recipients = PermissionManager::getInstance()->getPermissionSubscriptions(Server::BROADCAST_CHANNEL_USERS);
 		}else{
 			$this->recipients = $recipients;
 		}

src/pocketmine/event/player/PlayerDeathEvent.php

@@ -23,9 +23,15 @@ declare(strict_types=1);
 
 namespace pocketmine\event\player;
 
+use pocketmine\block\Block;
+use pocketmine\entity\Living;
+use pocketmine\event\entity\EntityDamageByBlockEvent;
+use pocketmine\event\entity\EntityDamageByEntityEvent;
+use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\event\entity\EntityDeathEvent;
 use pocketmine\item\Item;
 use pocketmine\lang\TextContainer;
+use pocketmine\lang\TranslationContainer;
 use pocketmine\Player;
 
 class PlayerDeathEvent extends EntityDeathEvent{
@@ -37,13 +43,13 @@ class PlayerDeathEvent extends EntityDeathEvent{
 	private $keepInventory = false;
 
 	/**
-	 * @param Player               $entity
-	 * @param Item[]               $drops
-	 * @param string|TextContainer $deathMessage
+	 * @param Player                    $entity
+	 * @param Item[]                    $drops
+	 * @param string|TextContainer|null $deathMessage Null will cause the default vanilla message to be used
 	 */
-	public function __construct(Player $entity, array $drops, $deathMessage){
+	public function __construct(Player $entity, array $drops, $deathMessage = null){
 		parent::__construct($entity, $drops);
-		$this->deathMessage = $deathMessage;
+		$this->deathMessage = $deathMessage ?? self::deriveMessage($entity->getDisplayName(), $entity->getLastDamageCause());
 	}
 
 	/**
@@ -81,4 +87,123 @@ class PlayerDeathEvent extends EntityDeathEvent{
 	public function setKeepInventory(bool $keepInventory) : void{
 		$this->keepInventory = $keepInventory;
 	}
+
+	/**
+	 * Returns the vanilla death message for the given death cause.
+	 *
+	 * @param string                 $name
+	 * @param null|EntityDamageEvent $deathCause
+	 *
+	 * @return TranslationContainer
+	 */
+	public static function deriveMessage(string $name, ?EntityDamageEvent $deathCause) : TranslationContainer{
+		$message = "death.attack.generic";
+		$params = [$name];
+
+		switch($deathCause === null ? EntityDamageEvent::CAUSE_CUSTOM : $deathCause->getCause()){
+			case EntityDamageEvent::CAUSE_ENTITY_ATTACK:
+				if($deathCause instanceof EntityDamageByEntityEvent){
+					$e = $deathCause->getDamager();
+					if($e instanceof Player){
+						$message = "death.attack.player";
+						$params[] = $e->getDisplayName();
+						break;
+					}elseif($e instanceof Living){
+						$message = "death.attack.mob";
+						$params[] = $e->getNameTag() !== "" ? $e->getNameTag() : $e->getName();
+						break;
+					}else{
+						$params[] = "Unknown";
+					}
+				}
+				break;
+			case EntityDamageEvent::CAUSE_PROJECTILE:
+				if($deathCause instanceof EntityDamageByEntityEvent){
+					$e = $deathCause->getDamager();
+					if($e instanceof Player){
+						$message = "death.attack.arrow";
+						$params[] = $e->getDisplayName();
+					}elseif($e instanceof Living){
+						$message = "death.attack.arrow";
+						$params[] = $e->getNameTag() !== "" ? $e->getNameTag() : $e->getName();
+						break;
+					}else{
+						$params[] = "Unknown";
+					}
+				}
+				break;
+			case EntityDamageEvent::CAUSE_SUICIDE:
+				$message = "death.attack.generic";
+				break;
+			case EntityDamageEvent::CAUSE_VOID:
+				$message = "death.attack.outOfWorld";
+				break;
+			case EntityDamageEvent::CAUSE_FALL:
+				if($deathCause instanceof EntityDamageEvent){
+					if($deathCause->getFinalDamage() > 2){
+						$message = "death.fell.accident.generic";
+						break;
+					}
+				}
+				$message = "death.attack.fall";
+				break;
+
+			case EntityDamageEvent::CAUSE_SUFFOCATION:
+				$message = "death.attack.inWall";
+				break;
+
+			case EntityDamageEvent::CAUSE_LAVA:
+				$message = "death.attack.lava";
+				break;
+
+			case EntityDamageEvent::CAUSE_FIRE:
+				$message = "death.attack.onFire";
+				break;
+
+			case EntityDamageEvent::CAUSE_FIRE_TICK:
+				$message = "death.attack.inFire";
+				break;
+
+			case EntityDamageEvent::CAUSE_DROWNING:
+				$message = "death.attack.drown";
+				break;
+
+			case EntityDamageEvent::CAUSE_CONTACT:
+				if($deathCause instanceof EntityDamageByBlockEvent){
+					if($deathCause->getDamager()->getId() === Block::CACTUS){
+						$message = "death.attack.cactus";
+					}
+				}
+				break;
+
+			case EntityDamageEvent::CAUSE_BLOCK_EXPLOSION:
+			case EntityDamageEvent::CAUSE_ENTITY_EXPLOSION:
+				if($deathCause instanceof EntityDamageByEntityEvent){
+					$e = $deathCause->getDamager();
+					if($e instanceof Player){
+						$message = "death.attack.explosion.player";
+						$params[] = $e->getDisplayName();
+					}elseif($e instanceof Living){
+						$message = "death.attack.explosion.player";
+						$params[] = $e->getNameTag() !== "" ? $e->getNameTag() : $e->getName();
+						break;
+					}
+				}else{
+					$message = "death.attack.explosion";
+				}
+				break;
+
+			case EntityDamageEvent::CAUSE_MAGIC:
+				$message = "death.attack.magic";
+				break;
+
+			case EntityDamageEvent::CAUSE_CUSTOM:
+				break;
+
+			default:
+				break;
+		}
+
+		return new TranslationContainer($message, $params);
+	}
 }

src/pocketmine/event/player/PlayerKickEvent.php

@@ -50,6 +50,13 @@ class PlayerKickEvent extends PlayerEvent implements Cancellable{
 		$this->reason = $reason;
 	}
 
+	/**
+	 * @param string $reason
+	 */
+	public function setReason(string $reason) : void{
+		$this->reason = $reason;
+	}
+
 	public function getReason() : string{
 		return $this->reason;
 	}

src/pocketmine/event/player/PlayerMoveEvent.php

@@ -34,7 +34,7 @@ class PlayerMoveEvent extends PlayerEvent implements Cancellable{
 	private $to;
 
 	/**
-	 * @param Player $player
+	 * @param Player   $player
 	 * @param Location $from
 	 * @param Location $to
 	 */

src/pocketmine/event/server/CommandEvent.php

@@ -0,0 +1,73 @@
+<?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\event\server;
+
+use pocketmine\command\CommandSender;
+use pocketmine\event\Cancellable;
+
+/**
+ * Called when any CommandSender runs a command, early in the process
+ *
+ * You don't want to use this except for a few cases like logging commands,
+ * blocking commands on certain places, or applying modifiers.
+ *
+ * The message DOES NOT contain a slash at the start
+ */
+class CommandEvent extends ServerEvent implements Cancellable{
+	/** @var string */
+	protected $command;
+
+	/** @var CommandSender */
+	protected $sender;
+
+	/**
+	 * @param CommandSender $sender
+	 * @param string        $command
+	 */
+	public function __construct(CommandSender $sender, string $command){
+		$this->sender = $sender;
+		$this->command = $command;
+	}
+
+	/**
+	 * @return CommandSender
+	 */
+	public function getSender() : CommandSender{
+		return $this->sender;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function getCommand() : string{
+		return $this->command;
+	}
+
+	/**
+	 * @param string $command
+	 */
+	public function setCommand(string $command) : void{
+		$this->command = $command;
+	}
+}

src/pocketmine/event/server/DataPacketSendEvent.php

@@ -34,7 +34,7 @@ class DataPacketSendEvent extends ServerEvent implements Cancellable{
 	private $player;
 
 	/**
-	 * @param Player $player
+	 * @param Player     $player
 	 * @param DataPacket $packet
 	 */
 	public function __construct(Player $player, DataPacket $packet){

src/pocketmine/event/server/RemoteServerCommandEvent.php

@@ -27,6 +27,8 @@ use pocketmine\command\CommandSender;
 
 /**
  * This event is called when a command is received over RCON.
+ *
+ * @deprecated Use CommandEvent instead.
  */
 class RemoteServerCommandEvent extends ServerCommandEvent{
 

src/pocketmine/event/server/ServerCommandEvent.php

@@ -33,6 +33,8 @@ use pocketmine\event\Cancellable;
  * blocking commands on certain places, or applying modifiers.
  *
  * The message DOES NOT contain a slash at the start
+ *
+ * @deprecated Use CommandEvent instead.
  */
 class ServerCommandEvent extends ServerEvent implements Cancellable{
 	/** @var string */

src/pocketmine/form/Form.php

@@ -0,0 +1,43 @@
+<?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\form;
+
+use pocketmine\Player;
+
+/**
+ * Form implementations must implement this interface to be able to utilize the Player form-sending mechanism.
+ * There is no restriction on custom implementations other than that they must implement this.
+ */
+interface Form extends \JsonSerializable{
+
+	/**
+	 * Handles a form response from a player.
+	 *
+	 * @param Player $player
+	 * @param mixed  $data
+	 *
+	 * @throws FormValidationException if the data could not be processed
+	 */
+	public function handleResponse(Player $player, $data) : void;
+}

src/pocketmine/form/FormValidationException.php

@@ -0,0 +1,28 @@
+<?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\form;
+
+class FormValidationException extends \RuntimeException{
+
+}

src/pocketmine/inventory/BaseInventory.php

@@ -384,6 +384,7 @@ abstract class BaseInventory implements Inventory{
 
 	/**
 	 * Removes the inventory window from all players currently viewing it.
+	 *
 	 * @param bool $force Force removal of permanent windows such as the player's own inventory. Used internally.
 	 */
 	public function removeAllViewers(bool $force = false) : void{

src/pocketmine/inventory/Inventory.php

@@ -244,6 +244,7 @@ interface Inventory{
 	 * Returns whether the specified slot exists in the inventory.
 	 *
 	 * @param int $slot
+	 *
 	 * @return bool
 	 */
 	public function slotExists(int $slot) : bool;

src/pocketmine/inventory/PlayerInventory.php

@@ -87,6 +87,7 @@ class PlayerInventory extends BaseInventory{
 
 	/**
 	 * @param int $slot
+	 *
 	 * @throws \InvalidArgumentException
 	 */
 	private function throwIfNotHotbarSlot(int $slot){
@@ -99,6 +100,7 @@ class PlayerInventory extends BaseInventory{
 	 * Returns the item in the specified hotbar slot.
 	 *
 	 * @param int $hotbarSlot
+	 *
 	 * @return Item
 	 *
 	 * @throws \InvalidArgumentException if the hotbar slot index is out of range
@@ -159,6 +161,7 @@ class PlayerInventory extends BaseInventory{
 
 	/**
 	 * Sends the currently-held item to specified targets.
+	 *
 	 * @param Player|Player[] $target
 	 */
 	public function sendHeldItem($target){

src/pocketmine/inventory/ShapedRecipe.php

@@ -46,11 +46,11 @@ class ShapedRecipe implements CraftingRecipe{
 	 *     Array of 1, 2, or 3 strings representing the rows of the recipe.
 	 *     This accepts an array of 1, 2 or 3 strings. Each string should be of the same length and must be at most 3
 	 *     characters long. Each character represents a unique type of ingredient. Spaces are interpreted as air.
-	 * @param Item[] $ingredients <br>
+	 * @param Item[]   $ingredients <br>
 	 *     Char => Item map of items to be set into the shape.
 	 *     This accepts an array of Items, indexed by character. Every unique character (except space) in the shape
 	 *     array MUST have a corresponding item in this list. Space character is automatically treated as air.
-	 * @param Item[] $results List of items that this recipe produces when crafted.
+	 * @param Item[]   $results List of items that this recipe produces when crafted.
 	 *
 	 * Note: Recipes **do not** need to be square. Do NOT add padding for empty rows/columns.
 	 */

src/pocketmine/inventory/transaction/action/DropItemAction.php

@@ -54,6 +54,7 @@ class DropItemAction extends InventoryAction{
 	 * Drops the target item in front of the player.
 	 *
 	 * @param Player $source
+	 *
 	 * @return bool
 	 */
 	public function execute(Player $source) : bool{

src/pocketmine/item/Armor.php

@@ -53,6 +53,7 @@ abstract class Armor extends Durable{
 
 	/**
 	 * Sets the dyed colour of this armour piece. This generally only applies to leather armour.
+	 *
 	 * @param Color $color
 	 */
 	public function setCustomColor(Color $color) : void{

src/pocketmine/item/Bow.php

@@ -24,9 +24,11 @@ declare(strict_types=1);
 namespace pocketmine\item;
 
 use pocketmine\entity\Entity;
+use pocketmine\entity\projectile\Arrow as ArrowEntity;
 use pocketmine\entity\projectile\Projectile;
 use pocketmine\event\entity\EntityShootBowEvent;
 use pocketmine\event\entity\ProjectileLaunchEvent;
+use pocketmine\item\enchantment\Enchantment;
 use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 use pocketmine\Player;
 
@@ -64,6 +66,21 @@ class Bow extends Tool{
 
 		$entity = Entity::createEntity("Arrow", $player->getLevel(), $nbt, $player, $force == 2);
 		if($entity instanceof Projectile){
+			$infinity = $this->hasEnchantment(Enchantment::INFINITY);
+			if($entity instanceof ArrowEntity){
+				if($infinity){
+					$entity->setPickupMode(ArrowEntity::PICKUP_CREATIVE);
+				}
+				if(($punchLevel = $this->getEnchantmentLevel(Enchantment::PUNCH)) > 0){
+					$entity->setPunchKnockback($punchLevel);
+				}
+			}
+			if(($powerLevel = $this->getEnchantmentLevel(Enchantment::POWER)) > 0){
+				$entity->setBaseDamage($entity->getBaseDamage() + (($powerLevel + 1) / 2));
+			}
+			if($this->hasEnchantment(Enchantment::FLAME)){
+				$entity->setOnFire(intdiv($entity->getFireTicks(), 20) + 100);
+			}
 			$ev = new EntityShootBowEvent($player, $this, $entity, $force);
 
 			if($force < 0.1 or $diff < 5){
@@ -80,7 +97,9 @@ class Bow extends Tool{
 			}else{
 				$entity->setMotion($entity->getMotion()->multiply($ev->getForce()));
 				if($player->isSurvival()){
-					$player->getInventory()->removeItem(ItemFactory::get(Item::ARROW, 0, 1));
+					if(!$infinity){ //TODO: tipped arrows are still consumed when Infinity is applied
+						$player->getInventory()->removeItem(ItemFactory::get(Item::ARROW, 0, 1));
+					}
 					$this->applyDamage(1);
 				}
 

src/pocketmine/item/ChorusFruit.php

@@ -47,17 +47,17 @@ class ChorusFruit extends Food{
 	}
 
 	public function onConsume(Living $consumer){
+		$level = $consumer->getLevel();
+		assert($level !== null);
+
 		$minX = $consumer->getFloorX() - 8;
-		$minY = $consumer->getFloorY() - 8;
+		$minY = min($consumer->getFloorY(), $consumer->getLevel()->getWorldHeight()) - 8;
 		$minZ = $consumer->getFloorZ() - 8;
 
 		$maxX = $minX + 16;
 		$maxY = $minY + 16;
 		$maxZ = $minZ + 16;
 
-		$level = $consumer->getLevel();
-		assert($level !== null);
-
 		for($attempts = 0; $attempts < 16; ++$attempts){
 			$x = mt_rand($minX, $maxX);
 			$y = mt_rand($minY, $maxY);

src/pocketmine/item/Durable.php

@@ -38,6 +38,7 @@ abstract class Durable extends Item{
 
 	/**
 	 * Sets whether the item will take damage when used.
+	 *
 	 * @param bool $value
 	 */
 	public function setUnbreakable(bool $value = true){
@@ -46,6 +47,7 @@ abstract class Durable extends Item{
 
 	/**
 	 * Applies damage to the item.
+	 *
 	 * @param int $amount
 	 *
 	 * @return bool if any damage was applied to the item

src/pocketmine/item/Item.php

@@ -196,7 +196,10 @@ class Item implements ItemIds, \JsonSerializable{
 	 * @param string $name
 	 */
 	public function __construct(int $id, int $meta = 0, string $name = "Unknown"){
-		$this->id = $id & 0xffff;
+		if($id < -0x8000 or $id > 0x7fff){ //signed short range
+			throw new \InvalidArgumentException("ID must be in range " . -0x8000 . " - " . 0x7fff);
+		}
+		$this->id = $id;
 		$this->setDamage($meta);
 		$this->name = $name;
 	}
@@ -520,6 +523,7 @@ class Item implements ItemIds, \JsonSerializable{
 
 	/**
 	 * @param string $name
+	 *
 	 * @return NamedTag|null
 	 */
 	public function getNamedTagEntry(string $name) : ?NamedTag{
@@ -554,6 +558,7 @@ class Item implements ItemIds, \JsonSerializable{
 
 	/**
 	 * Sets the Item's NBT from the supplied CompoundTag object.
+	 *
 	 * @param CompoundTag $tag
 	 *
 	 * @return Item
@@ -586,6 +591,7 @@ class Item implements ItemIds, \JsonSerializable{
 
 	/**
 	 * @param int $count
+	 *
 	 * @return Item
 	 */
 	public function setCount(int $count) : Item{
@@ -666,6 +672,7 @@ class Item implements ItemIds, \JsonSerializable{
 
 	/**
 	 * @param int $meta
+	 *
 	 * @return Item
 	 */
 	public function setDamage(int $meta) : Item{
@@ -776,6 +783,7 @@ class Item implements ItemIds, \JsonSerializable{
 	 * Returns whether the item was changed, for example count decrease or durability change.
 	 *
 	 * @param Player $player
+	 *
 	 * @return bool
 	 */
 	public function onReleaseUsing(Player $player) : bool{
@@ -841,6 +849,7 @@ class Item implements ItemIds, \JsonSerializable{
 
 	/**
 	 * Returns whether the specified item stack has the same ID, damage, NBT and count as this item stack.
+	 *
 	 * @param Item $other
 	 *
 	 * @return bool
@@ -885,6 +894,7 @@ class Item implements ItemIds, \JsonSerializable{
 	 * Returns an Item from properties created in an array by {@link Item#jsonSerialize}
 	 *
 	 * @param array $data
+	 *
 	 * @return Item
 	 */
 	final public static function jsonDeserialize(array $data) : Item{
@@ -916,7 +926,7 @@ class Item implements ItemIds, \JsonSerializable{
 	 */
 	public function nbtSerialize(int $slot = -1, string $tagName = "") : CompoundTag{
 		$result = new CompoundTag($tagName, [
-			new ShortTag("id", Binary::signShort($this->id)),
+			new ShortTag("id", $this->id),
 			new ByteTag("Count", Binary::signByte($this->count)),
 			new ShortTag("Damage", $this->meta)
 		]);
@@ -951,9 +961,14 @@ class Item implements ItemIds, \JsonSerializable{
 
 		$idTag = $tag->getTag("id");
 		if($idTag instanceof ShortTag){
-			$item = ItemFactory::get(Binary::unsignShort($idTag->getValue()), $meta, $count);
+			$item = ItemFactory::get($idTag->getValue(), $meta, $count);
 		}elseif($idTag instanceof StringTag){ //PC item save format
-			$item = ItemFactory::fromString($idTag->getValue());
+			try{
+				$item = ItemFactory::fromString($idTag->getValue());
+			}catch(\InvalidArgumentException $e){
+				//TODO: improve error handling
+				return ItemFactory::get(Item::AIR, 0, 0);
+			}
 			$item->setDamage($meta);
 			$item->setCount($count);
 		}else{

src/pocketmine/item/ItemFactory.php

@@ -246,6 +246,8 @@ class ItemFactory{
 		self::registerItem(new Item(Item::NAUTILUS_SHELL, 0, "Nautilus Shell"));
 		self::registerItem(new GoldenAppleEnchanted());
 		self::registerItem(new Item(Item::HEART_OF_THE_SEA, 0, "Heart of the Sea"));
+		self::registerItem(new Item(Item::TURTLE_SHELL_PIECE, 0, "Scute"));
+		//TODO: TURTLE_HELMET
 
 		//TODO: COMPOUND
 		//TODO: RECORD_13
@@ -281,7 +283,7 @@ class ItemFactory{
 			throw new \RuntimeException("Trying to overwrite an already registered item");
 		}
 
-		self::$list[$id] = clone $item;
+		self::$list[self::getListOffset($id)] = clone $item;
 	}
 
 	/**
@@ -302,10 +304,10 @@ class ItemFactory{
 
 		try{
 			/** @var Item|null $listed */
-			$listed = self::$list[$id];
+			$listed = self::$list[self::getListOffset($id)];
 			if($listed !== null){
 				$item = clone $listed;
-			}elseif($id < 256){
+			}elseif($id < 256){ //intentionally includes negatives, for extended block IDs
 				/* Blocks must have a damage value 0-15, but items can have damage value -1 to indicate that they are
 				 * crafting ingredients with any-damage. */
 				$item = new ItemBlock($id, $meta);
@@ -353,13 +355,13 @@ class ItemFactory{
 			if(!isset($b[1])){
 				$meta = 0;
 			}elseif(is_numeric($b[1])){
-				$meta = $b[1] & 0xFFFF;
+				$meta = (int) $b[1];
 			}else{
 				throw new \InvalidArgumentException("Unable to parse \"" . $b[1] . "\" from \"" . $str . "\" as a valid meta value");
 			}
 
 			if(is_numeric($b[0])){
-				$item = self::get(((int) $b[0]) & 0xFFFF, $meta);
+				$item = self::get((int) $b[0], $meta);
 			}elseif(defined(ItemIds::class . "::" . strtoupper($b[0]))){
 				$item = self::get(constant(ItemIds::class . "::" . strtoupper($b[0])), $meta);
 			}else{
@@ -380,6 +382,13 @@ class ItemFactory{
 		if($id < 256){
 			return BlockFactory::isRegistered($id);
 		}
-		return self::$list[$id] !== null;
+		return self::$list[self::getListOffset($id)] !== null;
+	}
+
+	private static function getListOffset(int $id) : int{
+		if($id < -0x8000 or $id > 0x7fff){
+			throw new \InvalidArgumentException("ID must be in range " . -0x8000 . " - " . 0x7fff);
+		}
+		return $id & 0xffff;
 	}
 }

src/pocketmine/item/ItemIds.php

@@ -235,6 +235,8 @@ interface ItemIds extends BlockIds{
 	public const NAUTILUS_SHELL = 465;
 	public const APPLEENCHANTED = 466, APPLE_ENCHANTED = 466, ENCHANTED_GOLDEN_APPLE = 466;
 	public const HEART_OF_THE_SEA = 467;
+	public const TURTLE_SHELL_PIECE = 468;
+	public const TURTLE_HELMET = 469;
 
 	public const COMPOUND = 499;
 	public const RECORD_13 = 500;

src/pocketmine/item/PaintingItem.php

@@ -37,67 +37,68 @@ class PaintingItem extends Item{
 	}
 
 	public function onActivate(Player $player, Block $blockReplace, Block $blockClicked, int $face, Vector3 $clickVector) : bool{
-		if(!$blockClicked->isTransparent() and $face > 1 and !$blockReplace->isSolid()){
-			/** @var PaintingMotive[] $motives */
-			$motives = [];
+		if($face === Vector3::SIDE_DOWN or $face === Vector3::SIDE_UP){
+			return false;
+		}
 
-			$totalDimension = 0;
-			foreach(PaintingMotive::getAll() as $motive){
-				$currentTotalDimension = $motive->getHeight() + $motive->getWidth();
-				if($currentTotalDimension < $totalDimension){
-					continue;
+		$motives = [];
+
+		$totalDimension = 0;
+		foreach(PaintingMotive::getAll() as $motive){
+			$currentTotalDimension = $motive->getHeight() + $motive->getWidth();
+			if($currentTotalDimension < $totalDimension){
+				continue;
+			}
+
+			if(Painting::canFit($player->level, $blockReplace, $face, true, $motive)){
+				if($currentTotalDimension > $totalDimension){
+					$totalDimension = $currentTotalDimension;
+					/*
+					 * This drops all motive possibilities smaller than this
+					 * We use the total of height + width to allow equal chance of horizontal/vertical paintings
+					 * when there is an L-shape of space available.
+					 */
+					$motives = [];
 				}
 
-				if(Painting::canFit($player->level, $blockReplace, $face, true, $motive)){
-					if($currentTotalDimension > $totalDimension){
-						$totalDimension = $currentTotalDimension;
-						/*
-						 * This drops all motive possibilities smaller than this
-						 * We use the total of height + width to allow equal chance of horizontal/vertical paintings
-						 * when there is an L-shape of space available.
-						 */
-						$motives = [];
-					}
-
-					$motives[] = $motive;
-				}
+				$motives[] = $motive;
 			}
+		}
 
-			if(empty($motives)){ //No space available
-				return false;
-			}
+		if(empty($motives)){ //No space available
+			return false;
+		}
 
-			/** @var PaintingMotive $motive */
-			$motive = $motives[array_rand($motives)];
+		/** @var PaintingMotive $motive */
+		$motive = $motives[array_rand($motives)];
 
-			static $directions = [
-				Vector3::SIDE_SOUTH => 0,
-				Vector3::SIDE_WEST => 1,
-				Vector3::SIDE_NORTH => 2,
-				Vector3::SIDE_EAST => 3
-			];
+		static $directions = [
+			Vector3::SIDE_SOUTH => 0,
+			Vector3::SIDE_WEST => 1,
+			Vector3::SIDE_NORTH => 2,
+			Vector3::SIDE_EAST => 3
+		];
 
-			$direction = $directions[$face] ?? -1;
-			if($direction === -1){
-				return false;
-			}
+		$direction = $directions[$face] ?? -1;
+		if($direction === -1){
+			return false;
+		}
 
-			$nbt = Entity::createBaseNBT($blockReplace, null, $direction * 90, 0);
-			$nbt->setByte("Direction", $direction);
-			$nbt->setString("Motive", $motive->getName());
-			$nbt->setInt("TileX", $blockClicked->getFloorX());
-			$nbt->setInt("TileY", $blockClicked->getFloorY());
-			$nbt->setInt("TileZ", $blockClicked->getFloorZ());
+		$nbt = Entity::createBaseNBT($blockReplace, null, $direction * 90, 0);
+		$nbt->setByte("Direction", $direction);
+		$nbt->setString("Motive", $motive->getName());
+		$nbt->setInt("TileX", $blockClicked->getFloorX());
+		$nbt->setInt("TileY", $blockClicked->getFloorY());
+		$nbt->setInt("TileZ", $blockClicked->getFloorZ());
 
-			$entity = Entity::createEntity("Painting", $blockReplace->getLevel(), $nbt);
+		$entity = Entity::createEntity("Painting", $blockReplace->getLevel(), $nbt);
 
-			if($entity instanceof Entity){
-				--$this->count;
-				$entity->spawnToAll();
+		if($entity instanceof Entity){
+			--$this->count;
+			$entity->spawnToAll();
 
-				$player->getLevel()->broadcastLevelEvent($blockReplace->add(0.5, 0.5, 0.5), LevelEventPacket::EVENT_SOUND_ITEMFRAME_PLACE); //item frame and painting have the same sound
-				return true;
-			}
+			$player->getLevel()->broadcastLevelEvent($blockReplace->add(0.5, 0.5, 0.5), LevelEventPacket::EVENT_SOUND_ITEMFRAME_PLACE); //item frame and painting have the same sound
+			return true;
 		}
 
 		return false;

src/pocketmine/item/Potion.php

@@ -71,9 +71,8 @@ class Potion extends Item implements Consumable{
 	 * Returns a list of effects applied by potions with the specified ID.
 	 *
 	 * @param int $id
-	 * @return EffectInstance[]
 	 *
-	 * @throws \InvalidArgumentException if the potion type is unknown
+	 * @return EffectInstance[]
 	 */
 	public static function getPotionEffectsById(int $id) : array{
 		switch($id){
@@ -213,7 +212,7 @@ class Potion extends Item implements Consumable{
 				];
 		}
 
-		throw new \InvalidArgumentException("Unknown potion type $id");
+		return [];
 	}
 
 	public function __construct(int $meta = 0){

src/pocketmine/item/ProjectileItem.php

@@ -27,8 +27,8 @@ use pocketmine\entity\Entity;
 use pocketmine\entity\projectile\Projectile;
 use pocketmine\event\entity\ProjectileLaunchEvent;
 use pocketmine\math\Vector3;
-use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 use pocketmine\nbt\tag\CompoundTag;
+use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 use pocketmine\Player;
 
 abstract class ProjectileItem extends Item{

src/pocketmine/item/WritableBook.php

@@ -137,7 +137,7 @@ class WritableBook extends Item{
 	/**
 	 * Inserts a new page with the given text and moves other pages upwards.
 	 *
-	 * @param int $pageId
+	 * @param int    $pageId
 	 * @param string $pageText
 	 *
 	 * @return bool indicating success

src/pocketmine/item/enchantment/Enchantment.php

@@ -114,13 +114,26 @@ class Enchantment{
 		self::registerEnchantment(new ProtectionEnchantment(self::PROJECTILE_PROTECTION, "%enchantment.protect.projectile", self::RARITY_UNCOMMON, self::SLOT_ARMOR, self::SLOT_NONE, 4, 1.5, [
 			EntityDamageEvent::CAUSE_PROJECTILE
 		]));
-
+		self::registerEnchantment(new Enchantment(self::THORNS, "%enchantment.thorns", self::RARITY_MYTHIC, self::SLOT_TORSO, self::SLOT_HEAD | self::SLOT_LEGS | self::SLOT_FEET, 3));
 		self::registerEnchantment(new Enchantment(self::RESPIRATION, "%enchantment.oxygen", self::RARITY_RARE, self::SLOT_HEAD, self::SLOT_NONE, 3));
 
+		self::registerEnchantment(new SharpnessEnchantment(self::SHARPNESS, "%enchantment.damage.all", self::RARITY_COMMON, self::SLOT_SWORD, self::SLOT_AXE, 5));
+		//TODO: smite, bane of arthropods (these don't make sense now because their applicable mobs don't exist yet)
+
+		self::registerEnchantment(new KnockbackEnchantment(self::KNOCKBACK, "%enchantment.knockback", self::RARITY_UNCOMMON, self::SLOT_SWORD, self::SLOT_NONE, 2));
+		self::registerEnchantment(new FireAspectEnchantment(self::FIRE_ASPECT, "%enchantment.fire", self::RARITY_RARE, self::SLOT_SWORD, self::SLOT_NONE, 2));
+
 		self::registerEnchantment(new Enchantment(self::EFFICIENCY, "%enchantment.digging", self::RARITY_COMMON, self::SLOT_DIG, self::SLOT_SHEARS, 5));
 		self::registerEnchantment(new Enchantment(self::SILK_TOUCH, "%enchantment.untouching", self::RARITY_MYTHIC, self::SLOT_DIG, self::SLOT_SHEARS, 1));
 		self::registerEnchantment(new Enchantment(self::UNBREAKING, "%enchantment.durability", self::RARITY_UNCOMMON, self::SLOT_DIG | self::SLOT_ARMOR | self::SLOT_FISHING_ROD | self::SLOT_BOW, self::SLOT_TOOL | self::SLOT_CARROT_STICK | self::SLOT_ELYTRA, 3));
 
+		self::registerEnchantment(new Enchantment(self::POWER, "%enchantment.arrowDamage", self::RARITY_COMMON, self::SLOT_BOW, self::SLOT_NONE, 5));
+		self::registerEnchantment(new Enchantment(self::PUNCH, "%enchantment.arrowKnockback", self::RARITY_RARE, self::SLOT_BOW, self::SLOT_NONE, 2));
+		self::registerEnchantment(new Enchantment(self::FLAME, "%enchantment.arrowFire", self::RARITY_RARE, self::SLOT_BOW, self::SLOT_NONE, 1));
+		self::registerEnchantment(new Enchantment(self::INFINITY, "%enchantment.arrowInfinite", self::RARITY_MYTHIC, self::SLOT_BOW, self::SLOT_NONE, 1));
+
+		self::registerEnchantment(new Enchantment(self::MENDING, "%enchantment.mending", self::RARITY_RARE, self::SLOT_NONE, self::SLOT_ALL, 1));
+
 		self::registerEnchantment(new Enchantment(self::VANISHING, "%enchantment.curse.vanishing", self::RARITY_MYTHIC, self::SLOT_NONE, self::SLOT_ALL, 1));
 	}
 

src/pocketmine/item/enchantment/EnchantmentInstance.php

@@ -69,6 +69,7 @@ class EnchantmentInstance{
 
 	/**
 	 * Sets the level of the enchantment.
+	 *
 	 * @param int $level
 	 *
 	 * @return $this

src/pocketmine/item/enchantment/FireAspectEnchantment.php

@@ -0,0 +1,41 @@
+<?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\enchantment;
+
+use pocketmine\entity\Entity;
+
+class FireAspectEnchantment extends MeleeWeaponEnchantment{
+
+	public function isApplicableTo(Entity $victim) : bool{
+		return true;
+	}
+
+	public function getDamageBonus(int $enchantmentLevel) : float{
+		return 0;
+	}
+
+	public function onPostAttack(Entity $attacker, Entity $victim, int $enchantmentLevel) : void{
+		$victim->setOnFire($enchantmentLevel * 4);
+	}
+}

src/pocketmine/item/enchantment/KnockbackEnchantment.php

@@ -0,0 +1,44 @@
+<?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\enchantment;
+
+use pocketmine\entity\Entity;
+use pocketmine\entity\Living;
+
+class KnockbackEnchantment extends MeleeWeaponEnchantment{
+
+	public function isApplicableTo(Entity $victim) : bool{
+		return $victim instanceof Living;
+	}
+
+	public function getDamageBonus(int $enchantmentLevel) : float{
+		return 0;
+	}
+
+	public function onPostAttack(Entity $attacker, Entity $victim, int $enchantmentLevel) : void{
+		if($victim instanceof Living){
+			$victim->knockBack($attacker, 0, $victim->x - $attacker->x, $victim->z - $attacker->z, $enchantmentLevel * 0.5);
+		}
+	}
+}

src/pocketmine/item/enchantment/MeleeWeaponEnchantment.php

@@ -0,0 +1,63 @@
+<?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\enchantment;
+
+use pocketmine\entity\Entity;
+
+/**
+ * Classes extending this class can be applied to weapons and activate when used by a mob to attack another mob in melee
+ * combat.
+ */
+abstract class MeleeWeaponEnchantment extends Enchantment{
+
+	/**
+	 * Returns whether this melee enchantment has an effect on the target entity. For example, Smite only applies to
+	 * undead mobs.
+	 *
+	 * @param Entity $victim
+	 *
+	 * @return bool
+	 */
+	abstract public function isApplicableTo(Entity $victim) : bool;
+
+	/**
+	 * Returns the amount of additional damage caused by this enchantment to applicable targets.
+	 *
+	 * @param int $enchantmentLevel
+	 *
+	 * @return float
+	 */
+	abstract public function getDamageBonus(int $enchantmentLevel) : float;
+
+	/**
+	 * Called after damaging the entity to apply any post damage effects to the target.
+	 *
+	 * @param Entity $attacker
+	 * @param Entity $victim
+	 * @param int    $enchantmentLevel
+	 */
+	public function onPostAttack(Entity $attacker, Entity $victim, int $enchantmentLevel) : void{
+
+	}
+}

src/pocketmine/item/enchantment/ProtectionEnchantment.php

@@ -62,6 +62,7 @@ class ProtectionEnchantment extends Enchantment{
 
 	/**
 	 * Returns the base EPF this enchantment type offers for the given enchantment level.
+	 *
 	 * @param int $level
 	 *
 	 * @return int
@@ -72,6 +73,7 @@ class ProtectionEnchantment extends Enchantment{
 
 	/**
 	 * Returns whether this enchantment type offers protection from the specified damage source's cause.
+	 *
 	 * @param EntityDamageEvent $event
 	 *
 	 * @return bool

src/pocketmine/item/enchantment/SharpnessEnchantment.php

@@ -0,0 +1,37 @@
+<?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\enchantment;
+
+use pocketmine\entity\Entity;
+
+class SharpnessEnchantment extends MeleeWeaponEnchantment{
+
+	public function isApplicableTo(Entity $victim) : bool{
+		return true;
+	}
+
+	public function getDamageBonus(int $enchantmentLevel) : float{
+		return 0.5 * ($enchantmentLevel + 1);
+	}
+}

src/pocketmine/level/Level.php

@@ -200,6 +200,8 @@ class Level implements ChunkManager, Metadatable{
 	private $chunkPopulationLock = [];
 	/** @var int */
 	private $chunkPopulationQueueSize = 2;
+	/** @var bool[] */
+	private $generatorRegisteredWorkers = [];
 
 	/** @var bool */
 	private $autoSave = true;
@@ -245,9 +247,6 @@ class Level implements ChunkManager, Metadatable{
 	/** @var bool */
 	private $closed = false;
 
-	/** @var \Closure */
-	private $asyncPoolStartHook;
-
 	public static function chunkHash(int $x, int $z) : int{
 		return (($x & 0xFFFFFFFF) << 32) | ($z & 0xFFFFFFFF);
 	}
@@ -285,6 +284,7 @@ class Level implements ChunkManager, Metadatable{
 
 	/**
 	 * @param string $str
+	 *
 	 * @return int
 	 */
 	public static function getDifficultyFromString(string $str) : int{
@@ -363,10 +363,6 @@ class Level implements ChunkManager, Metadatable{
 		$this->temporalPosition = new Position(0, 0, 0, $this);
 		$this->temporalVector = new Vector3(0, 0, 0);
 		$this->tickRate = 1;
-
-		$this->server->getAsyncPool()->addWorkerStartHook($this->asyncPoolStartHook = function(int $worker) : void{
-			$this->registerGeneratorToWorker($worker);
-		});
 	}
 
 	public function getTickRate() : int{
@@ -382,15 +378,18 @@ class Level implements ChunkManager, Metadatable{
 	}
 
 	public function registerGeneratorToWorker(int $worker) : void{
+		$this->generatorRegisteredWorkers[$worker] = true;
 		$this->server->getAsyncPool()->submitTaskToWorker(new GeneratorRegisterTask($this, $this->generator, $this->provider->getGeneratorOptions()), $worker);
 	}
 
 	public function unregisterGenerator(){
 		$pool = $this->server->getAsyncPool();
-		$pool->removeWorkerStartHook($this->asyncPoolStartHook);
 		foreach($pool->getRunningWorkers() as $i){
-			$pool->submitTaskToWorker(new GeneratorUnregisterTask($this), $i);
+			if(isset($this->generatorRegisteredWorkers[$i])){
+				$pool->submitTaskToWorker(new GeneratorUnregisterTask($this), $i);
+			}
 		}
+		$this->generatorRegisteredWorkers = [];
 	}
 
 	public function getBlockMetadata() : BlockMetadataStore{
@@ -848,18 +847,18 @@ class Level implements ChunkManager, Metadatable{
 	}
 
 	/**
-	 * @param Player[] $target
-	 * @param Block[]  $blocks
-	 * @param int      $flags
-	 * @param bool     $optimizeRebuilds
+	 * @param Player[]  $target
+	 * @param Vector3[] $blocks
+	 * @param int       $flags
+	 * @param bool      $optimizeRebuilds
 	 */
 	public function sendBlocks(array $target, array $blocks, int $flags = UpdateBlockPacket::FLAG_NONE, bool $optimizeRebuilds = false){
 		$packets = [];
 		if($optimizeRebuilds){
 			$chunks = [];
 			foreach($blocks as $b){
-				if($b === null){
-					continue;
+				if(!($b instanceof Vector3)){
+					throw new \TypeError("Expected Vector3 in blocks array, got " . (is_object($b) ? get_class($b) : gettype($b)));
 				}
 				$pk = new UpdateBlockPacket();
 
@@ -874,24 +873,20 @@ class Level implements ChunkManager, Metadatable{
 				$pk->z = $b->z;
 
 				if($b instanceof Block){
-					$blockId = $b->getId();
-					$blockData = $b->getDamage();
+					$pk->blockRuntimeId = $b->getRuntimeId();
 				}else{
 					$fullBlock = $this->getFullBlock($b->x, $b->y, $b->z);
-					$blockId = $fullBlock >> 4;
-					$blockData = $fullBlock & 0xf;
+					$pk->blockRuntimeId = BlockFactory::toStaticRuntimeId($fullBlock >> 4, $fullBlock & 0xf);
 				}
 
-				$pk->blockRuntimeId = BlockFactory::toStaticRuntimeId($blockId, $blockData);
-
 				$pk->flags = $first ? $flags : UpdateBlockPacket::FLAG_NONE;
 
 				$packets[] = $pk;
 			}
 		}else{
 			foreach($blocks as $b){
-				if($b === null){
-					continue;
+				if(!($b instanceof Vector3)){
+					throw new \TypeError("Expected Vector3 in blocks array, got " . (is_object($b) ? get_class($b) : gettype($b)));
 				}
 				$pk = new UpdateBlockPacket();
 
@@ -900,16 +895,12 @@ class Level implements ChunkManager, Metadatable{
 				$pk->z = $b->z;
 
 				if($b instanceof Block){
-					$blockId = $b->getId();
-					$blockData = $b->getDamage();
+					$pk->blockRuntimeId = $b->getRuntimeId();
 				}else{
 					$fullBlock = $this->getFullBlock($b->x, $b->y, $b->z);
-					$blockId = $fullBlock >> 4;
-					$blockData = $fullBlock & 0xf;
+					$pk->blockRuntimeId = BlockFactory::toStaticRuntimeId($fullBlock >> 4, $fullBlock & 0xf);
 				}
 
-				$pk->blockRuntimeId = BlockFactory::toStaticRuntimeId($blockId, $blockData);
-
 				$pk->flags = $flags;
 
 				$packets[] = $pk;
@@ -981,13 +972,20 @@ class Level implements ChunkManager, Metadatable{
 		foreach($this->chunkTickList as $index => $loaders){
 			Level::getXZ($index, $chunkX, $chunkZ);
 
-			if(($chunk = $this->chunks[$index] ?? null) === null){
-				unset($this->chunkTickList[$index]);
-				continue;
-			}elseif($loaders <= 0){
+			for($cx = -1; $cx <= 1; ++$cx){
+				for($cz = -1; $cz <= 1; ++$cz){
+					if(!isset($this->chunks[Level::chunkHash($chunkX + $cx, $chunkZ + $cz)])){
+						unset($this->chunkTickList[$index]);
+						goto skip_to_next; //no "continue 3" thanks!
+					}
+				}
+			}
+
+			if($loaders <= 0){
 				unset($this->chunkTickList[$index]);
 			}
 
+			$chunk = $this->chunks[$index];
 			foreach($chunk->getEntities() as $entity){
 				$entity->scheduleUpdate();
 			}
@@ -1016,6 +1014,8 @@ class Level implements ChunkManager, Metadatable{
 					}
 				}
 			}
+
+			skip_to_next: //dummy label to break out of nested loops
 		}
 
 		if($this->clearChunksOnTick){
@@ -1778,7 +1778,7 @@ class Level implements ChunkManager, Metadatable{
 		}
 
 		if($player !== null){
-			$ev = new PlayerInteractEvent($player, $item, $blockClicked, $clickVector, $face, $blockClicked->getId() === 0 ? PlayerInteractEvent::RIGHT_CLICK_AIR : PlayerInteractEvent::RIGHT_CLICK_BLOCK);
+			$ev = new PlayerInteractEvent($player, $item, $blockClicked, $clickVector, $face, PlayerInteractEvent::RIGHT_CLICK_BLOCK);
 			if($this->checkSpawnProtection($player, $blockClicked)){
 				$ev->setCancelled(); //set it to cancelled so plugins can bypass this
 			}
@@ -1866,7 +1866,7 @@ class Level implements ChunkManager, Metadatable{
 		}
 
 		if($playSound){
-			$this->broadcastLevelSoundEvent($hand, LevelSoundEventPacket::SOUND_PLACE, 1, BlockFactory::toStaticRuntimeId($hand->getId(), $hand->getDamage()));
+			$this->broadcastLevelSoundEvent($hand, LevelSoundEventPacket::SOUND_PLACE, 1, $hand->getRuntimeId());
 		}
 
 		$item->pop();
@@ -2953,8 +2953,13 @@ class Level implements ChunkManager, Metadatable{
 						$this->chunkPopulationLock[Level::chunkHash($x + $xx, $z + $zz)] = true;
 					}
 				}
+
 				$task = new PopulationTask($this, $chunk);
-				$this->server->getAsyncPool()->submitTask($task);
+				$workerId = $this->server->getAsyncPool()->selectWorker();
+				if(!isset($this->generatorRegisteredWorkers[$workerId])){
+					$this->registerGeneratorToWorker($workerId);
+				}
+				$this->server->getAsyncPool()->submitTaskToWorker($task, $workerId);
 			}
 
 			Timings::$populationTimer->stopTiming();
@@ -2974,6 +2979,7 @@ class Level implements ChunkManager, Metadatable{
 					$this->unloadChunkRequest($X, $Z, true);
 				}
 			}
+			$chunk->collectGarbage();
 		}
 
 		$this->provider->doGarbageCollection();

src/pocketmine/level/format/Chunk.php

@@ -51,7 +51,7 @@ class Chunk{
 	/** @var bool */
 	protected $isInit = false;
 
-	/** @var bool*/
+	/** @var bool */
 	protected $lightPopulated = false;
 	/** @var bool */
 	protected $terrainGenerated = false;
@@ -75,8 +75,8 @@ class Chunk{
 	/** @var Entity[] */
 	protected $entities = [];
 
-	/** @var int[] */
-	protected $heightMap = [];
+	/** @var \SplFixedArray|int[] */
+	protected $heightMap;
 
 	/** @var string */
 	protected $biomeIds;
@@ -110,11 +110,11 @@ class Chunk{
 		}
 
 		if(count($heightMap) === 256){
-			$this->heightMap = $heightMap;
+			$this->heightMap = \SplFixedArray::fromArray($heightMap);
 		}else{
 			assert(count($heightMap) === 0, "Wrong HeightMap value count, expected 256, got " . count($heightMap));
 			$val = ($this->height * 16);
-			$this->heightMap = array_fill(0, 256, $val);
+			$this->heightMap = \SplFixedArray::fromArray(array_fill(0, 256, $val));
 		}
 
 		if(strlen($biomeIds) === 256){
@@ -327,8 +327,8 @@ class Chunk{
 	/**
 	 * Returns the Y coordinate of the highest non-air block at the specified X/Z chunk block coordinates
 	 *
-	 * @param int  $x 0-15
-	 * @param int  $z 0-15
+	 * @param int $x 0-15
+	 * @param int $z 0-15
 	 *
 	 * @return int 0-255, or -1 if there are no blocks in the column
 	 */
@@ -366,6 +366,7 @@ class Chunk{
 
 	/**
 	 * Returns the heightmap value at the specified X/Z chunk block coordinates
+	 *
 	 * @param int $x 0-15
 	 * @param int $z 0-15
 	 * @param int $value
@@ -465,6 +466,7 @@ class Chunk{
 
 	/**
 	 * Returns a column of block IDs from bottom to top at the specified X/Z chunk block coordinates.
+	 *
 	 * @param int $x 0-15
 	 * @param int $z 0-15
 	 *
@@ -475,11 +477,13 @@ class Chunk{
 		foreach($this->subChunks as $subChunk){
 			$result .= $subChunk->getBlockIdColumn($x, $z);
 		}
+
 		return $result;
 	}
 
 	/**
 	 * Returns a column of block meta values from bottom to top at the specified X/Z chunk block coordinates.
+	 *
 	 * @param int $x 0-15
 	 * @param int $z 0-15
 	 *
@@ -495,6 +499,7 @@ class Chunk{
 
 	/**
 	 * Returns a column of sky light values from bottom to top at the specified X/Z chunk block coordinates.
+	 *
 	 * @param int $x 0-15
 	 * @param int $z 0-15
 	 *
@@ -510,6 +515,7 @@ class Chunk{
 
 	/**
 	 * Returns a column of block light values from bottom to top at the specified X/Z chunk block coordinates.
+	 *
 	 * @param int $x 0-15
 	 * @param int $z 0-15
 	 *
@@ -739,7 +745,7 @@ class Chunk{
 	 * @return int[]
 	 */
 	public function getHeightMapArray() : array{
-		return $this->heightMap;
+		return $this->heightMap->toArray();
 	}
 
 	/**
@@ -830,18 +836,13 @@ class Chunk{
 	}
 
 	/**
-	 * Disposes of empty subchunks
+	 * Disposes of empty subchunks and frees data where possible
 	 */
-	public function pruneEmptySubChunks(){
+	public function collectGarbage() : void{
 		foreach($this->subChunks as $y => $subChunk){
-			if($subChunk instanceof EmptySubChunk){
-				continue;
-			}elseif($subChunk->isEmpty()){ //normal subchunk full of air, remove it and replace it with an empty stub
+			if(!($subChunk instanceof EmptySubChunk) and $subChunk->isEmpty()){ //normal subchunk full of air, remove it and replace it with an empty stub
 				$this->subChunks[$y] = $this->emptySubChunk;
-			}else{
-				continue; //do not set changed
 			}
-			$this->hasChanged = true;
 		}
 	}
 
@@ -858,8 +859,8 @@ class Chunk{
 			$result .= $this->subChunks[$y]->networkSerialize();
 		}
 		$result .= pack("v*", ...$this->heightMap)
-		        .  $this->biomeIds
-		        .  chr(0); //border block array count
+			. $this->biomeIds
+			. chr(0); //border block array count
 		//Border block entry format: 1 byte (4 bits X, 4 bits Z). These are however useless since they crash the regular client.
 
 		foreach($this->tiles as $tile){
@@ -881,20 +882,31 @@ class Chunk{
 		$stream = new BinaryStream();
 		$stream->putInt($this->x);
 		$stream->putInt($this->z);
-		$count = 0;
-		$subChunks = "";
-		foreach($this->subChunks as $y => $subChunk){
-			if($subChunk instanceof EmptySubChunk){
-				continue;
+		$stream->putByte(($this->lightPopulated ? 4 : 0) | ($this->terrainPopulated ? 2 : 0) | ($this->terrainGenerated ? 1 : 0));
+		if($this->terrainGenerated){
+			//subchunks
+			$count = 0;
+			$subChunks = "";
+			foreach($this->subChunks as $y => $subChunk){
+				if($subChunk instanceof EmptySubChunk){
+					continue;
+				}
+				++$count;
+				$subChunks .= chr($y) . $subChunk->getBlockIdArray() . $subChunk->getBlockDataArray();
+				if($this->lightPopulated){
+					$subChunks .= $subChunk->getBlockSkyLightArray() . $subChunk->getBlockLightArray();
+				}
+			}
+			$stream->putByte($count);
+			$stream->put($subChunks);
+
+			//biomes
+			$stream->put($this->biomeIds);
+			if($this->lightPopulated){
+				$stream->put(pack("v*", ...$this->heightMap));
 			}
-			++$count;
-			$subChunks .= chr($y) . $subChunk->fastSerialize();
 		}
-		$stream->putByte($count);
-		$stream->put($subChunks);
-		$stream->put(pack("v*", ...$this->heightMap) .
-			$this->biomeIds .
-			chr(($this->lightPopulated ? 4 : 0) | ($this->terrainPopulated ? 2 : 0) | ($this->terrainGenerated ? 1 : 0)));
+
 		return $stream->getBuffer();
 	}
 
@@ -910,19 +922,36 @@ class Chunk{
 
 		$x = $stream->getInt();
 		$z = $stream->getInt();
+		$flags = $stream->getByte();
+		$lightPopulated = (bool) ($flags & 4);
+		$terrainPopulated = (bool) ($flags & 2);
+		$terrainGenerated = (bool) ($flags & 1);
+
 		$subChunks = [];
-		$count = $stream->getByte();
-		for($y = 0; $y < $count; ++$y){
-			$subChunks[$stream->getByte()] = SubChunk::fastDeserialize($stream->get(10240));
+		$biomeIds = "";
+		$heightMap = [];
+		if($terrainGenerated){
+			$count = $stream->getByte();
+			for($y = 0; $y < $count; ++$y){
+				$subChunks[$stream->getByte()] = new SubChunk(
+					$stream->get(4096), //blockids
+					$stream->get(2048), //blockdata
+					$lightPopulated ? $stream->get(2048) : "", //skylight
+					$lightPopulated ? $stream->get(2048) : "" //blocklight
+				);
+			}
+
+			$biomeIds = $stream->get(256);
+			if($lightPopulated){
+				$heightMap = array_values(unpack("v*", $stream->get(512)));
+			}
 		}
-		$heightMap = array_values(unpack("v*", $stream->get(512)));
-		$biomeIds = $stream->get(256);
 
 		$chunk = new Chunk($x, $z, $subChunks, [], [], $biomeIds, $heightMap);
-		$flags = $stream->getByte();
-		$chunk->lightPopulated = (bool) ($flags & 4);
-		$chunk->terrainPopulated = (bool) ($flags & 2);
-		$chunk->terrainGenerated = (bool) ($flags & 1);
+		$chunk->setGenerated($terrainGenerated);
+		$chunk->setPopulated($terrainPopulated);
+		$chunk->setLightPopulated($lightPopulated);
+
 		return $chunk;
 	}
 }

src/pocketmine/level/format/EmptySubChunk.php

@@ -126,8 +126,4 @@ class EmptySubChunk implements SubChunkInterface{
 	public function networkSerialize() : string{
 		return "\x00" . str_repeat("\x00", 6144);
 	}
-
-	public function fastSerialize() : string{
-		throw new \BadMethodCallException("Should not try to serialize empty subchunks");
-	}
 }

src/pocketmine/level/format/SubChunk.php

@@ -106,13 +106,14 @@ class SubChunk implements SubChunkInterface{
 
 		if($data !== null){
 			$i >>= 1;
-			$byte = ord($this->data{$i});
+			$oldPair = ord($this->data{$i});
 			if(($y & 1) === 0){
-				$this->data{$i} = chr(($byte & 0xf0) | ($data & 0x0f));
+				$newPair = ($oldPair & 0xf0) | ($data & 0x0f);
 			}else{
-				$this->data{$i} = chr((($data & 0x0f) << 4) | ($byte & 0x0f));
+				$newPair = (($data & 0x0f) << 4) | ($oldPair & 0x0f);
 			}
-			if($this->data{$i} !== $byte){
+			if($newPair !== $oldPair){
+				$this->data{$i} = chr($newPair);
 				$changed = true;
 			}
 		}
@@ -222,23 +223,6 @@ class SubChunk implements SubChunkInterface{
 		return "\x00" . $this->ids . $this->data;
 	}
 
-	public function fastSerialize() : string{
-		return
-			$this->ids .
-			$this->data .
-			$this->skyLight .
-			$this->blockLight;
-	}
-
-	public static function fastDeserialize(string $data) : SubChunk{
-		return new SubChunk(
-			substr($data,    0, 4096), //ids
-			substr($data, 4096, 2048), //data
-			substr($data, 6144, 2048), //sky light
-			substr($data, 8192, 2048)  //block light
-		);
-	}
-
 	public function __debugInfo(){
 		return [];
 	}

src/pocketmine/level/format/SubChunkInterface.php

@@ -27,6 +27,7 @@ interface SubChunkInterface{
 
 	/**
 	 * @param bool $checkLight
+	 *
 	 * @return bool
 	 */
 	public function isEmpty(bool $checkLight = true) : bool;
@@ -201,9 +202,4 @@ interface SubChunkInterface{
 	 * @return string
 	 */
 	public function networkSerialize() : string;
-
-	/**
-	 * @return string
-	 */
-	public function fastSerialize() : string;
 }

src/pocketmine/level/format/io/ChunkRequestTask.php

@@ -29,7 +29,6 @@ use pocketmine\network\mcpe\protocol\BatchPacket;
 use pocketmine\network\mcpe\protocol\FullChunkDataPacket;
 use pocketmine\scheduler\AsyncTask;
 use pocketmine\Server;
-use pocketmine\tile\Spawnable;
 
 class ChunkRequestTask extends AsyncTask{
 
@@ -39,36 +38,22 @@ class ChunkRequestTask extends AsyncTask{
 	protected $chunkX;
 	protected $chunkZ;
 
-	protected $tiles;
-
 	protected $compressionLevel;
 
 	public function __construct(Level $level, int $chunkX, int $chunkZ, Chunk $chunk){
 		$this->levelId = $level->getId();
 		$this->compressionLevel = $level->getServer()->networkCompressionLevel;
 
-		$this->chunk = $chunk->fastSerialize();
+		$this->chunk = $chunk->networkSerialize();
 		$this->chunkX = $chunkX;
 		$this->chunkZ = $chunkZ;
-
-		//TODO: serialize tiles with chunks
-		$tiles = "";
-		foreach($chunk->getTiles() as $tile){
-			if($tile instanceof Spawnable){
-				$tiles .= $tile->getSerializedSpawnCompound();
-			}
-		}
-
-		$this->tiles = $tiles;
 	}
 
 	public function onRun(){
-		$chunk = Chunk::fastDeserialize($this->chunk);
-
 		$pk = new FullChunkDataPacket();
 		$pk->chunkX = $this->chunkX;
 		$pk->chunkZ = $this->chunkZ;
-		$pk->data = $chunk->networkSerialize() . $this->tiles;
+		$pk->data = $this->chunk;
 
 		$batch = new BatchPacket();
 		$batch->addPacket($pk);

src/pocketmine/level/format/io/LevelProvider.php

@@ -148,6 +148,7 @@ interface LevelProvider{
 
 	/**
 	 * Sets the world difficulty.
+	 *
 	 * @param int $difficulty
 	 */
 	public function setDifficulty(int $difficulty);

src/pocketmine/level/format/io/LevelProviderManager.php

@@ -27,7 +27,6 @@ use pocketmine\level\format\io\leveldb\LevelDB;
 use pocketmine\level\format\io\region\Anvil;
 use pocketmine\level\format\io\region\McRegion;
 use pocketmine\level\format\io\region\PMAnvil;
-use pocketmine\level\LevelException;
 
 abstract class LevelProviderManager{
 	protected static $providers = [];
@@ -42,12 +41,21 @@ abstract class LevelProviderManager{
 	/**
 	 * @param string $class
 	 *
-	 * @throws LevelException
+	 * @throws \InvalidArgumentException
 	 */
 	public static function addProvider(string $class){
-		if(!is_subclass_of($class, LevelProvider::class)){
-			throw new LevelException("Class is not a subclass of LevelProvider");
+		try{
+			$reflection = new \ReflectionClass($class);
+		}catch(\ReflectionException $e){
+			throw new \InvalidArgumentException("Class $class does not exist");
 		}
+		if(!$reflection->implementsInterface(LevelProvider::class)){
+			throw new \InvalidArgumentException("Class $class does not implement " . LevelProvider::class);
+		}
+		if(!$reflection->isInstantiable()){
+			throw new \InvalidArgumentException("Class $class cannot be constructed");
+		}
+
 		/** @var LevelProvider $class */
 		self::$providers[strtolower($class::getProviderName())] = $class;
 	}

src/pocketmine/level/format/io/region/RegionLoader.php

@@ -35,7 +35,6 @@ class RegionLoader{
 
 	public const MAX_SECTOR_LENGTH = 256 << 12; //256 sectors, (1 MiB)
 	public const REGION_HEADER_LENGTH = 8192; //4096 location table + 4096 timestamps
-	public const MAX_REGION_FILE_SIZE = 32 * 32 * self::MAX_SECTOR_LENGTH + self::REGION_HEADER_LENGTH; //32 * 32 1MiB chunks + header size
 
 	public static $COMPRESSION_LEVEL = 7;
 
@@ -64,13 +63,8 @@ class RegionLoader{
 		$exists = file_exists($this->filePath);
 		if(!$exists){
 			touch($this->filePath);
-		}else{
-			$fileSize = filesize($this->filePath);
-			if($fileSize > self::MAX_REGION_FILE_SIZE){
-				throw new CorruptedRegionException("Corrupted oversized region file found, should be a maximum of " . self::MAX_REGION_FILE_SIZE . " bytes, got " . $fileSize . " bytes");
-			}elseif($fileSize % 4096 !== 0){
-				throw new CorruptedRegionException("Region file should be padded to a multiple of 4KiB");
-			}
+		}elseif(filesize($this->filePath) % 4096 !== 0){
+			throw new CorruptedRegionException("Region file should be padded to a multiple of 4KiB");
 		}
 
 		$this->filePointer = fopen($this->filePath, "r+b");

src/pocketmine/level/generator/Flat.php

@@ -26,11 +26,13 @@ namespace pocketmine\level\generator;
 use pocketmine\block\Block;
 use pocketmine\block\BlockFactory;
 use pocketmine\item\ItemFactory;
+use pocketmine\level\ChunkManager;
 use pocketmine\level\format\Chunk;
 use pocketmine\level\generator\object\OreType;
 use pocketmine\level\generator\populator\Ore;
 use pocketmine\level\generator\populator\Populator;
 use pocketmine\math\Vector3;
+use pocketmine\utils\Random;
 
 class Flat extends Generator{
 	/** @var Chunk */
@@ -41,6 +43,8 @@ class Flat extends Generator{
 	private $structure;
 	/** @var int */
 	private $floorLevel;
+	/** @var int */
+	private $biome;
 	/** @var mixed[] */
 	private $options;
 	/** @var string */
@@ -55,9 +59,15 @@ class Flat extends Generator{
 	}
 
 	public function __construct(array $options = []){
-		$this->preset = "2;7,2x3,2;1;";
-		//$this->preset = "2;7,59x1,3x3,2;1;spawn(radius=10 block=89),decoration(treecount=80 grasscount=45)";
 		$this->options = $options;
+		if(isset($this->options["preset"]) and $this->options["preset"] != ""){
+			$this->preset = $this->options["preset"];
+		}else{
+			$this->preset = "2;7,2x3,2;1;";
+			//$this->preset = "2;7,59x1,3x3,2;1;spawn(radius=10 block=89),decoration(treecount=80 grasscount=45)";
+		}
+
+		$this->parsePreset();
 
 		if(isset($this->options["decoration"])){
 			$ores = new Ore();
@@ -90,39 +100,14 @@ class Flat extends Generator{
 		return $result;
 	}
 
-	protected function generateBaseChunk(string $preset) : void{
-		$this->preset = $preset;
-		$preset = explode(";", $preset);
-		$version = (int) $preset[0];
+	protected function parsePreset() : void{
+		$preset = explode(";", $this->preset);
 		$blocks = (string) ($preset[1] ?? "");
-		$biome = (int) ($preset[2] ?? 1);
+		$this->biome = (int) ($preset[2] ?? 1);
 		$options = (string) ($preset[3] ?? "");
 		$this->structure = self::parseLayers($blocks);
 
-		$this->floorLevel = $y = count($this->structure);
-
-		$this->chunk = new Chunk(0, 0);
-		$this->chunk->setGenerated();
-
-		for($Z = 0; $Z < 16; ++$Z){
-			for($X = 0; $X < 16; ++$X){
-				$this->chunk->setBiomeId($X, $Z, $biome);
-			}
-		}
-
-		$count = count($this->structure);
-		for($sy = 0; $sy < $count; $sy += 16){
-			$subchunk = $this->chunk->getSubChunk($sy >> 4, true);
-			for($y = 0; $y < 16 and isset($this->structure[$y | $sy]); ++$y){
-				list($id, $meta) = $this->structure[$y | $sy];
-
-				for($Z = 0; $Z < 16; ++$Z){
-					for($X = 0; $X < 16; ++$X){
-						$subchunk->setBlock($X, $y, $Z, $id, $meta);
-					}
-				}
-			}
-		}
+		$this->floorLevel = count($this->structure);
 
 		preg_match_all('#(([0-9a-z_]{1,})\(?([0-9a-z_ =:]{0,})\)?),?#', $options, $matches);
 		foreach($matches[2] as $i => $option){
@@ -141,14 +126,37 @@ class Flat extends Generator{
 		}
 	}
 
-	public function generateChunk(int $chunkX, int $chunkZ) : void{
-		if($this->chunk === null){
-			if(isset($this->options["preset"]) and $this->options["preset"] != ""){
-				$this->generateBaseChunk($this->options["preset"]);
-			}else{
-				$this->generateBaseChunk($this->preset);
+	protected function generateBaseChunk() : void{
+		$this->chunk = new Chunk(0, 0);
+		$this->chunk->setGenerated();
+
+		for($Z = 0; $Z < 16; ++$Z){
+			for($X = 0; $X < 16; ++$X){
+				$this->chunk->setBiomeId($X, $Z, $this->biome);
 			}
 		}
+
+		$count = count($this->structure);
+		for($sy = 0; $sy < $count; $sy += 16){
+			$subchunk = $this->chunk->getSubChunk($sy >> 4, true);
+			for($y = 0; $y < 16 and isset($this->structure[$y | $sy]); ++$y){
+				list($id, $meta) = $this->structure[$y | $sy];
+
+				for($Z = 0; $Z < 16; ++$Z){
+					for($X = 0; $X < 16; ++$X){
+						$subchunk->setBlock($X, $y, $Z, $id, $meta);
+					}
+				}
+			}
+		}
+	}
+
+	public function init(ChunkManager $level, Random $random) : void{
+		parent::init($level, $random);
+		$this->generateBaseChunk();
+	}
+
+	public function generateChunk(int $chunkX, int $chunkZ) : void{
 		$chunk = clone $this->chunk;
 		$chunk->setX($chunkX);
 		$chunk->setZ($chunkZ);

src/pocketmine/level/generator/populator/Populator.php

@@ -33,9 +33,9 @@ abstract class Populator{
 
 	/**
 	 * @param ChunkManager $level
-	 * @param int $chunkX
-	 * @param int $chunkZ
-	 * @param Random $random
+	 * @param int          $chunkX
+	 * @param int          $chunkZ
+	 * @param Random       $random
 	 *
 	 * @return mixed
 	 */

src/pocketmine/level/light/LightPopulationTask.php

@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace pocketmine\level\light;
 
+use pocketmine\block\BlockFactory;
 use pocketmine\level\format\Chunk;
 use pocketmine\level\Level;
 use pocketmine\scheduler\AsyncTask;
@@ -39,6 +40,9 @@ class LightPopulationTask extends AsyncTask{
 	}
 
 	public function onRun(){
+		if(!BlockFactory::isInit()){
+			BlockFactory::init();
+		}
 		/** @var Chunk $chunk */
 		$chunk = Chunk::fastDeserialize($this->chunk);
 

src/pocketmine/level/light/LightUpdate.php

@@ -106,6 +106,8 @@ abstract class LightUpdate{
 		while(!$this->spreadQueue->isEmpty()){
 			list($x, $y, $z) = $this->spreadQueue->dequeue();
 
+			unset($this->spreadVisited[Level::blockHash($x, $y, $z)]);
+
 			if(!$this->subChunkHandler->moveTo($x, $y, $z)){
 				continue;
 			}

src/pocketmine/level/particle/DestroyBlockParticle.php

@@ -24,7 +24,6 @@ declare(strict_types=1);
 namespace pocketmine\level\particle;
 
 use pocketmine\block\Block;
-use pocketmine\block\BlockFactory;
 use pocketmine\math\Vector3;
 use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
@@ -35,7 +34,7 @@ class DestroyBlockParticle extends Particle{
 
 	public function __construct(Vector3 $pos, Block $b){
 		parent::__construct($pos->x, $pos->y, $pos->z);
-		$this->data = BlockFactory::toStaticRuntimeId($b->getId(), $b->getDamage());
+		$this->data = $b->getRuntimeId();
 	}
 
 	public function encode(){

src/pocketmine/level/particle/FloatingTextParticle.php

@@ -95,7 +95,7 @@ class FloatingTextParticle extends Particle{
 
 			$add = new PlayerListPacket();
 			$add->type = PlayerListPacket::TYPE_ADD;
-			$add->entries = [PlayerListEntry::createAdditionEntry($uuid, $this->entityId, $name, $name, 0, new Skin("Standard_Custom", str_repeat("\x00", 8192)))];
+			$add->entries = [PlayerListEntry::createAdditionEntry($uuid, $this->entityId, $name, new Skin("Standard_Custom", str_repeat("\x00", 8192)))];
 			$p[] = $add;
 
 			$pk = new AddPlayerPacket();
@@ -109,8 +109,8 @@ class FloatingTextParticle extends Particle{
 				1 << Entity::DATA_FLAG_IMMOBILE
 			);
 			$pk->metadata = [
-				Entity::DATA_FLAGS =>   [Entity::DATA_TYPE_LONG,   $flags],
-				Entity::DATA_SCALE =>   [Entity::DATA_TYPE_FLOAT,  0.01] //zero causes problems on debug builds
+				Entity::DATA_FLAGS => [Entity::DATA_TYPE_LONG, $flags],
+				Entity::DATA_SCALE => [Entity::DATA_TYPE_FLOAT, 0.01] //zero causes problems on debug builds
 			];
 
 			$p[] = $pk;

src/pocketmine/level/particle/TerrainParticle.php

@@ -24,11 +24,10 @@ declare(strict_types=1);
 namespace pocketmine\level\particle;
 
 use pocketmine\block\Block;
-use pocketmine\block\BlockFactory;
 use pocketmine\math\Vector3;
 
 class TerrainParticle extends GenericParticle{
 	public function __construct(Vector3 $pos, Block $b){
-		parent::__construct($pos, Particle::TYPE_TERRAIN, BlockFactory::toStaticRuntimeId($b->getId(), $b->getDamage()));
+		parent::__construct($pos, Particle::TYPE_TERRAIN, $b->getRuntimeId());
 	}
 }

src/pocketmine/network/mcpe/NetworkBinaryStream.php

@@ -109,7 +109,12 @@ class NetworkBinaryStream extends BinaryStream{
 		$this->putVarInt($auxValue);
 
 		$nbt = $item->getCompoundTag();
-		$this->putLShort(strlen($nbt));
+		$nbtLen = strlen($nbt);
+		if($nbtLen > 32767){
+			throw new \InvalidArgumentException("NBT encoded length must be < 32768, got $nbtLen bytes");
+		}
+
+		$this->putLShort($nbtLen);
 		$this->put($nbt);
 
 		$this->putVarInt(0); //CanPlaceOn entry count (TODO)

src/pocketmine/network/mcpe/NetworkSession.php

@@ -79,6 +79,7 @@ use pocketmine\network\mcpe\protocol\ModalFormResponsePacket;
 use pocketmine\network\mcpe\protocol\MoveEntityAbsolutePacket;
 use pocketmine\network\mcpe\protocol\MoveEntityDeltaPacket;
 use pocketmine\network\mcpe\protocol\MovePlayerPacket;
+use pocketmine\network\mcpe\protocol\NetworkStackLatencyPacket;
 use pocketmine\network\mcpe\protocol\NpcRequestPacket;
 use pocketmine\network\mcpe\protocol\PhotoTransferPacket;
 use pocketmine\network\mcpe\protocol\PlaySoundPacket;
@@ -100,6 +101,7 @@ use pocketmine\network\mcpe\protocol\ResourcePackStackPacket;
 use pocketmine\network\mcpe\protocol\ResourcePacksInfoPacket;
 use pocketmine\network\mcpe\protocol\RespawnPacket;
 use pocketmine\network\mcpe\protocol\RiderJumpPacket;
+use pocketmine\network\mcpe\protocol\ScriptCustomEventPacket;
 use pocketmine\network\mcpe\protocol\ServerSettingsRequestPacket;
 use pocketmine\network\mcpe\protocol\ServerSettingsResponsePacket;
 use pocketmine\network\mcpe\protocol\ServerToClientHandshakePacket;
@@ -115,6 +117,7 @@ use pocketmine\network\mcpe\protocol\SetLastHurtByPacket;
 use pocketmine\network\mcpe\protocol\SetLocalPlayerAsInitializedPacket;
 use pocketmine\network\mcpe\protocol\SetPlayerGameTypePacket;
 use pocketmine\network\mcpe\protocol\SetScorePacket;
+use pocketmine\network\mcpe\protocol\SetScoreboardIdentityPacket;
 use pocketmine\network\mcpe\protocol\SetSpawnPositionPacket;
 use pocketmine\network\mcpe\protocol\SetTimePacket;
 use pocketmine\network\mcpe\protocol\SetTitlePacket;
@@ -134,6 +137,7 @@ use pocketmine\network\mcpe\protocol\UpdateAttributesPacket;
 use pocketmine\network\mcpe\protocol\UpdateBlockPacket;
 use pocketmine\network\mcpe\protocol\UpdateBlockSyncedPacket;
 use pocketmine\network\mcpe\protocol\UpdateEquipPacket;
+use pocketmine\network\mcpe\protocol\UpdateSoftEnumPacket;
 use pocketmine\network\mcpe\protocol\UpdateTradePacket;
 use pocketmine\network\mcpe\protocol\WSConnectPacket;
 
@@ -585,7 +589,23 @@ abstract class NetworkSession{
 		return false;
 	}
 
+	public function handleSetScoreboardIdentity(SetScoreboardIdentityPacket $packet) : bool{
+		return false;
+	}
+
 	public function handleSetLocalPlayerAsInitialized(SetLocalPlayerAsInitializedPacket $packet) : bool{
 		return false;
 	}
+
+	public function handleUpdateSoftEnum(UpdateSoftEnumPacket $packet) : bool{
+		return false;
+	}
+
+	public function handleNetworkStackLatency(NetworkStackLatencyPacket $packet) : bool{
+		return false;
+	}
+
+	public function handleScriptCustomEvent(ScriptCustomEventPacket $packet) : bool{
+		return false;
+	}
 }

src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter.php

@@ -79,6 +79,10 @@ class PlayerNetworkSessionAdapter extends NetworkSession{
 	}
 
 	public function handleDataPacket(DataPacket $packet){
+		if(!$this->player->isConnected()){
+			return;
+		}
+
 		$timings = Timings::getReceiveDataPacketTimings($packet);
 		$timings->startTiming();
 
@@ -239,7 +243,37 @@ class PlayerNetworkSessionAdapter extends NetworkSession{
 	}
 
 	public function handleModalFormResponse(ModalFormResponsePacket $packet) : bool{
-		return false; //TODO: GUI stuff
+		return $this->player->onFormSubmit($packet->formId, self::stupid_json_decode($packet->formData, true));
+	}
+
+	/**
+	 * Hack to work around a stupid bug in Minecraft W10 which causes empty strings to be sent unquoted in form responses.
+	 *
+	 * @param string $json
+	 * @param bool   $assoc
+	 *
+	 * @return mixed
+	 */
+	private static function stupid_json_decode(string $json, bool $assoc = false){
+		if(preg_match('/^\[(.+)\]$/s', $json, $matches) > 0){
+			$parts = preg_split('/(?:"(?:\\"|[^"])*"|)\K(,)/', $matches[1]); //Splits on commas not inside quotes, ignoring escaped quotes
+			foreach($parts as $k => $part){
+				$part = trim($part);
+				if($part === ""){
+					$part = "\"\"";
+				}
+				$parts[$k] = $part;
+			}
+
+			$fixed = "[" . implode(",", $parts) . "]";
+			if(($ret = json_decode($fixed, $assoc)) === null){
+				throw new \InvalidArgumentException("Failed to fix JSON: " . json_last_error_msg() . "(original: $json, modified: $fixed)");
+			}
+
+			return $ret;
+		}
+
+		return json_decode($json, $assoc);
 	}
 
 	public function handleServerSettingsRequest(ServerSettingsRequestPacket $packet) : bool{