pocketmine\entity\Entity::fastMove PHP Method

    public function fastMove($dx, $dy, $dz)
    {
        if ($dx == 0 and $dz == 0 and $dy == 0) {
            return true;
        }
        Timings::$entityMoveTimer->startTiming();
        /*$newBB = $this->boundingBox->getOffsetBoundingBox($dx, $dy, $dz);
        
        		$list = $this->level->getCollisionCubes($this, $newBB, false);
        
        		if(count($list) === 0){
        			$this->boundingBox = $newBB;
        		}*/
        $this->x = ($this->boundingBox->minX + $this->boundingBox->maxX) / 2;
        $this->y = $this->boundingBox->minY - $this->ySize;
        $this->z = ($this->boundingBox->minZ + $this->boundingBox->maxZ) / 2;
        $this->checkChunks();
        if (!$this->onGround or $dy != 0) {
            $bb = clone $this->boundingBox;
            $bb->minY -= 0.75;
            $this->onGround = false;
            if (!$this->level->getBlock(new Vector3($this->x, $this->y - 1, $this->z))->isTransparent()) {
                $this->onGround = true;
            }
            /*
                                    if(count($this->level->getCollisionBlocks($bb)) > 0){
                                        $this->onGround = true;
                                    }*/
        }
        $this->isCollided = $this->onGround;
        $this->updateFallState($dy, $this->onGround);
        Timings::$entityMoveTimer->stopTiming();
        return true;
    }