pocketmine\Player::processMovement PHP Method

    protected function processMovement($tickDiff)
    {
        if (!$this->isAlive() or !$this->spawned or $this->newPosition === null or $this->teleportPosition !== null) {
            $this->setMoving(false);
            return;
        }
        $newPos = $this->newPosition;
        $distanceSquared = $newPos->distanceSquared($this);
        $revert = false;
        if ($this->server->checkMovement) {
            if ($distanceSquared / $tickDiff ** 2 > 200) {
                $revert = true;
            } else {
                if ($this->chunk === null or !$this->chunk->isGenerated()) {
                    $chunk = $this->level->getChunk($newPos->x >> 4, $newPos->z >> 4, false);
                    if ($chunk === null or !$chunk->isGenerated()) {
                        $revert = true;
                        $this->nextChunkOrderRun = 0;
                    } else {
                        if ($this->chunk !== null) {
                            $this->chunk->removeEntity($this);
                        }
                        $this->chunk = $chunk;
                    }
                }
            }
        } else {
            if ($this->chunk === null or !$this->chunk->isGenerated()) {
                $chunk = $this->level->getChunk($newPos->x >> 4, $newPos->z >> 4, false);
                if ($chunk === null or !$chunk->isGenerated()) {
                    $revert = true;
                    $this->nextChunkOrderRun = 0;
                } else {
                    if ($this->chunk !== null) {
                        $this->chunk->removeEntity($this);
                    }
                    $this->chunk = $chunk;
                }
            }
        }
        if (!$revert and $distanceSquared != 0) {
            $dx = $newPos->x - $this->x;
            $dy = $newPos->y - $this->y;
            $dz = $newPos->z - $this->z;
            $this->move($dx, $dy, $dz);
            $diffX = $this->x - $newPos->x;
            $diffY = $this->y - $newPos->y;
            $diffZ = $this->z - $newPos->z;
            $yS = 0.5 + $this->ySize;
            if ($diffY >= -$yS or $diffY <= $yS) {
                $diffY = 0;
            }
            $diff = ($diffX ** 2 + $diffY ** 2 + $diffZ ** 2) / $tickDiff ** 2;
            /*if($this->isSurvival()){
            				if(!$revert and !$this->isSleeping()){
            					if($diff > 0.0625){
            						$revert = true;
            						$this->server->getLogger()->warning($this->getServer()->getLanguage()->translateString("pocketmine.player.invalidMove", [$this->getName()]));
            					}
            				}
            			}
            
            			if($diff > 0){
            				$this->x = $newPos->x;
            				$this->y = $newPos->y;
            				$this->z = $newPos->z;
            				$radius = $this->width / 2;
            				$this->boundingBox->setBounds($this->x - $radius, $this->y, $this->z - $radius, $this->x + $radius, $this->y + $this->height, $this->z + $radius);
            			}*/
        }
        $from = new Location($this->lastX, $this->lastY, $this->lastZ, $this->lastYaw, $this->lastPitch, $this->level);
        $to = $this->getLocation();
        $delta = pow($this->lastX - $to->x, 2) + pow($this->lastY - $to->y, 2) + pow($this->lastZ - $to->z, 2);
        $deltaAngle = abs($this->lastYaw - $to->yaw) + abs($this->lastPitch - $to->pitch);
        if (!$revert and ($delta > 1 / 16 or $deltaAngle > 10)) {
            $isFirst = ($this->lastX === null or $this->lastY === null or $this->lastZ === null);
            $this->lastX = $to->x;
            $this->lastY = $to->y;
            $this->lastZ = $to->z;
            $this->lastYaw = $to->yaw;
            $this->lastPitch = $to->pitch;
            if (!$isFirst) {
                $ev = new PlayerMoveEvent($this, $from, $to);
                $this->setMoving(true);
                $this->server->getPluginManager()->callEvent($ev);
                if (!($revert = $ev->isCancelled())) {
                    //Yes, this is intended
                    if ($this->server->netherEnabled) {
                        if ($this->isInsideOfPortal()) {
                            if ($this->portalTime == 0) {
                                $this->portalTime = $this->server->getTick();
                            }
                        } else {
                            $this->portalTime = 0;
                        }
                    }
                    if ($to->distanceSquared($ev->getTo()) > 0.01) {
                        //If plugins modify the destination
                        $this->teleport($ev->getTo());
                    } else {
                        $this->addMovement($this->x, $this->y + $this->getEyeHeight(), $this->z, $this->yaw, $this->pitch, $this->yaw);
                    }
                    if ($this->fishingHook instanceof FishingHook) {
                        if ($this->distance($this->fishingHook) > 33 or $this->inventory->getItemInHand()->getId() !== Item::FISHING_ROD) {
                            $this->setFishingHook();
                        }
                    }
                }
            }
            if (!$this->isSpectator()) {
                $this->checkNearEntities($tickDiff);
            }
            $this->speed = $from->subtract($to);
        } elseif ($distanceSquared == 0) {
            $this->speed = new Vector3(0, 0, 0);
            $this->setMoving(false);
        }
        if ($revert && !$this->isSpectator()) {
            $this->lastX = $from->x;
            $this->lastY = $from->y;
            $this->lastZ = $from->z;
            $this->lastYaw = $from->yaw;
            $this->lastPitch = $from->pitch;
            $this->sendPosition($from, $from->yaw, $from->pitch, 1);
            $this->forceMovement = new Vector3($from->x, $from->y, $from->z);
        } else {
            $this->forceMovement = null;
            if ($distanceSquared != 0 and $this->nextChunkOrderRun > 20) {
                $this->nextChunkOrderRun = 20;
            }
        }
        $this->newPosition = null;
    }