PocketMine

Balloon.php

<?php

  /**
  * @name Balloon
  * @author BEcraft
  * @version 1.0
  * @api 3.0.0
  * @main BEcraft\Balloon\Loader
  */
  
  namespace BEcraft\Balloon;
  
  use pocketmine\plugin\PluginBase;
  use pocketmine\event\Listener;
  use pocketmine\Player;
  use pocketmine\Server;
  use pocketmine\nbt\tag\CompoundTag;
  use pocketmine\nbt\tag\ListTag;
  use pocketmine\nbt\tag\DoubleTag;
  use pocketmine\nbt\tag\IntTag;
  use pocketmine\nbt\tag\ByteTag;
  use pocketmine\nbt\tag\FloatTag;
  use pocketmine\entity\Entity;
  use pocketmine\entity\Villager;
  use pocketmine\entity\FallingSand;
  use pocketmine\utils\TextFormat;
  use pocketmine\event\player\PlayerChatEvent;
  use pocketmine\event\player\PlayerMoveEvent;
  use pocketmine\network\mcpe\protocol\SetEntityDataPacket;
  use pocketmine\network\mcpe\protocol\SetEntityLinkPacket;
  
  class Loader extends PluginBase implements Listener{
     
     private $balloon = [];
     
     public function onEnable(){
        $this->getServer()->getPluginManager()->registerEvents($this, $this);
        Entity::registerEntity(NewVillager::class, true);
        Entity::registerEntity(NewFallingSand::class, true);
     }
     
     private function hasBalloon(string $player): bool{
        return array_key_exists($player, $this->balloon);
     }
     
     private function getBalloonID(string $player): int{
        if($this->hasBalloon($player)){
           return $this->balloon[$player]["BalloonID"];
        }
     }
     
     private function getBaseID(string $player): int{
        if($this->hasBalloon($player)){
           return $this->balloon[$player]["BaseID"];
        }
     } 
     
     public function onChat(PlayerChatEvent $event){
        if($event->isCancelled()){
           return false;
        }
        $player = $event->getPlayer();
        $command = explode(" ", $event->getMessage());
        if($command[0] === "%balloon"){
           if($command[1] === "spawn"){
              if($this->hasBalloon($player->getName())){
                 $player->sendMessage(TextFormat::RED."- Ya tienes tu globo, no seas ambicioso D:");
              }else{
                 if($this->addPlayer($player->getName(), Manager::spawnBalloon($player))){
                    $player->sendMessage(TextFormat::GOLD."- Ahora tienes un globo! :)");
                 }
              }
           }elseif($command[1] === "close"){
              if(!$this->hasBalloon($player->getName())){
                 $player->sendMessage(TextFormat::GOLD."- Aun no tienes un globo, usa %balloon spawn");
              }else{
                 if(!is_null(($balloon = $player->getLevel()->getEntity($this->getBalloonID($player->getName()))))){
                    $balloon->close();
                 }
                 if(!is_null(($base = $player->getLevel()->getEntity($this->getBaseID($player->getName()))))){
                    $base->close();
                 }
                 unset($this->balloons[$player->getName()]);
                 $player->sendMessage(TextFormat::YELLOW."- Tu globo se ha eliminado");
              }
           }else{
              $player->sendMessage(TextFormat::YELLOW."Usa: ".TextFormat::GREEN."%balloon <spawn:close>");
           }
           $event->setCancelled();
        }
     }
     
     public function onMove(PlayerMoveEvent $event){
        if($event->isCancelled()){
           return false;
        }
        $player = $event->getPlayer();
        if($this->hasBalloon($player->getName())){
           $entity = $player->getLevel()->getEntity($this->getBalloonID($player->getName()));
           if(!is_null($entity)){
              $diff = abs($x = $player->getX()-$entity->getX())+abs($z = $player->getZ()-$entity->getZ());
              $x = 1.5*($x/$diff+0.5);
              $z = 1.5*($z/$diff+0.5);
              $player->getLevel()->addEntityMovement($player->chunk->getX(), $player->chunk->getZ(), $this->getBalloonID($player->getName()), $player->getX()+$x, $player->getY()+5, $player->getZ()+$z, $player->yaw, $player->pitch);
           }
        }
     }
     
     private function addPlayer(string $player, array $data): bool{
           $this->balloon[$player] = ["BalloonID" => $data["BalloonID"], "BaseID" => $data["BaseID"]];
           return $this->hasBalloon($player);
     }
     
  }
  
  class Manager{
     
     public static function spawnBalloon(Player $player): array{
        $nbt = new CompoundTag();
        $nbt->Pos = new ListTag("Pos", [new DoubleTag("", $player->getX()), new DoubleTag("", $player->getY()+5), new DoubleTag("", $player->getZ())]);
        $nbt->Motion = new ListTag("Motion", [new DoubleTag("", 0), new DoubleTag("", 0), new DoubleTag("", 0)]);
        $nbt->Rotation = new ListTag("Rotation", [new FloatTag("", 0.0), new FloatTag("", 0.0)]);
        $entity = Entity::createEntity("NewVillager", $player->getLevel(), $nbt);
        $entity->setDataFlag(Entity::DATA_FLAGS, Entity::DATA_FLAG_LEASHED, true);
        $entity->setDataProperty(Entity::DATA_LEAD_HOLDER_EID, Entity::DATA_TYPE_LONG, $player->getId());
        $entity->spawnToAll();
        $nbt->TileID = new IntTag("TileID", 35);
        $nbt->Data = new ByteTag("Data", mt_rand(1, 15));
        $balloon = Entity::createEntity("NewFallingSand", $player->getLevel(), $nbt);
        $balloon->spawnToAll();
        $pk = new SetEntityLinkPacket();
        $pk->from = $entity->getId();
        $pk->to = $balloon->getId();
        $pk->type = 2;
        Server::getInstance()->broadcastPacket(Server::getInstance()->getOnlinePlayers(), $pk);
        return ["BalloonID" => $entity->getId(), "BaseID" => $balloon->getId()];
     }
     
  }
  
  class NewVillager extends Villager{
     
     public function initEntity(){
        parent::initEntity();
        $this->setDataProperty(self::DATA_SCALE, self::DATA_TYPE_FLOAT, 0.1);
        $this->setDataFlag(self::DATA_FLAGS, self::DATA_FLAG_BABY, true); //shh xD
        $this->setDataFlag(self::DATA_FLAGS, self::DATA_FLAG_INVISIBLE, true);
     }
     
  }
  
  class NewFallingSand extends FallingSand{
     
     protected $gravity = 0.0;
     protected $drag = 0.0;
     
     public function onUpdate($currentTick){
        return true;
     }
     
  }

TypeError: "Argument 1 passed to pocketmine\network\mcpe\protocol\DataPacket::putEntityLink() must be an instance of pocketmine\network\mcpe\protocol\types\EntityLink, null given, called in phar:///home/dev3/TestServer/PocketMine-MP.phar/src/pocketmine/network/mcpe/protocol/SetEntityLinkPacket.php on line 43" (EXCEPTION) in "src/pocketmine/network/mcpe/protocol/DataPacket" at line 535