pocketmine\level\MovingObjectPosition::fromEntity PHP Method

    public static function fromEntity(Entity $entity)
    {
        $ob = new MovingObjectPosition();
        $ob->typeOfHit = 1;
        $ob->entityHit = $entity;
        $ob->hitVector = new Vector3($entity->x, $entity->y, $entity->z);
        return $ob;
    }

 public function onUpdate()
 {
     $this->entityBaseTick();
     if ($this->closed !== false) {
         return false;
     }
     $movingObjectPosition = null;
     $this->motionY -= $this->gravity;
     $this->inBlock = $this->checkObstruction($this->x, ($this->boundingBox->minY + $this->boundingBox->maxY) / 2, $this->z);
     $moveVector = new Vector3($this->x + $this->motionX, $this->y + $this->motionY, $this->z + $this->motionZ);
     $list = $this->getLevel()->getCollidingEntities($this->boundingBox->addCoord($this->motionX, $this->motionY, $this->motionZ)->expand(1, 1, 1), $this);
     $nearDistance = PHP_INT_MAX;
     $nearEntity = null;
     foreach ($list as $entity) {
         if (!$entity->canCollideWith($this) or $entity === $this->shootingEntity and $this->ticksLived < 5) {
             continue;
         }
         $axisalignedbb = $entity->boundingBox->grow(0.3, 0.3, 0.3);
         $ob = $axisalignedbb->calculateIntercept($this, $moveVector);
         if ($ob === null) {
             continue;
         }
         $distance = $this->distance($ob->hitVector);
         if ($distance < $nearDistance) {
             $nearDistance = $distance;
             $nearEntity = $entity;
         }
     }
     if ($nearEntity !== null) {
         $movingObjectPosition = MovingObjectPosition::fromEntity($nearEntity);
     }
     if ($movingObjectPosition !== null) {
         if ($movingObjectPosition->entityHit !== null) {
             $motion = sqrt($this->motionX ** 2 + $this->motionY ** 2 + $this->motionZ ** 2);
             $damage = ceil($motion * $this->damage);
             $ev = new EntityDamageByEntityEvent($this->shootingEntity === null ? $this : $this->shootingEntity, $movingObjectPosition->entityHit, EntityDamageEvent::CAUSE_PROJECTILE, $damage);
             $this->server->getPluginManager()->callEvent($ev);
             if (!$ev->isCancelled()) {
                 $movingObjectPosition->entityHit->attack($damage, $ev);
                 if ($this->fireTicks > 0) {
                     $movingObjectPosition->entityHit->setOnFire(5);
                 }
                 $this->kill();
             }
         }
     }
     $this->move($this->motionX, $this->motionY, $this->motionZ);
     $friction = 1 - $this->drag;
     if ($this->onGround) {
         $friction = $this->getLevel()->getBlock(new Vector3($this->getFloorX(), $this->getFloorY() - 1, $this->getFloorZ()))->frictionFactor * $friction;
     }
     $this->motionX *= $friction;
     $this->motionY *= 1 - $this->drag;
     $this->motionZ *= $friction;
     if ($this->onGround) {
         $this->motionX = 0;
         $this->motionY = 0;
         $this->motionZ = 0;
     }
     if ($this->motionX != 0 or $this->motionY != 0 or $this->motionZ != 0) {
         $f = sqrt($this->motionX ** 2 + $this->motionZ ** 2);
         $this->yaw = atan2($this->motionX, $this->motionZ) * 180 / M_PI;
         $this->pitch = atan2($this->motionY, $f) * 180 / M_PI;
     }
     if ($this->age > 1200) {
         $this->kill();
     }
     $this->updateMovement();
     return !$this->onGround or $this->motionX == 0 and $this->motionY == 0 and $this->motionZ == 0;
 }