pocketmine\entity\Squid::onUpdate PHP Метод

    public function onUpdate($currentTick)
    {
        if ($this->closed !== false) {
            return false;
        }
        if (++$this->switchDirectionTicker === 100) {
            $this->switchDirectionTicker = 0;
            if (mt_rand(0, 100) < 50) {
                $this->swimDirection = null;
            }
        }
        $this->lastUpdate = $currentTick;
        $this->timings->startTiming();
        $hasUpdate = parent::onUpdate($currentTick);
        if ($this->isAlive()) {
            if ($this->y > 62 and $this->swimDirection !== null) {
                $this->swimDirection->y = -0.5;
            }
            $inWater = $this->isInsideOfWater();
            if (!$inWater) {
                $this->motionY -= $this->gravity;
                $this->swimDirection = null;
            } elseif ($this->swimDirection !== null) {
                if ($this->motionX ** 2 + $this->motionY ** 2 + $this->motionZ ** 2 <= $this->swimDirection->lengthSquared()) {
                    $this->motionX = $this->swimDirection->x * $this->swimSpeed;
                    $this->motionY = $this->swimDirection->y * $this->swimSpeed;
                    $this->motionZ = $this->swimDirection->z * $this->swimSpeed;
                }
            } else {
                $this->swimDirection = $this->generateRandomDirection();
                $this->swimSpeed = mt_rand(50, 100) / 2000;
            }
            $expectedPos = new Vector3($this->x + $this->motionX, $this->y + $this->motionY, $this->z + $this->motionZ);
            $this->move($this->motionX, $this->motionY, $this->motionZ);
            if ($expectedPos->distanceSquared($this) > 0) {
                $this->swimDirection = $this->generateRandomDirection();
                $this->swimSpeed = mt_rand(50, 100) / 2000;
            }
            $friction = 1 - $this->drag;
            $this->motionX *= $friction;
            $this->motionY *= 1 - $this->drag;
            $this->motionZ *= $friction;
            $f = sqrt($this->motionX ** 2 + $this->motionZ ** 2);
            $this->yaw = -atan2($this->motionX, $this->motionZ) * 180 / M_PI;
            $this->pitch = -atan2($f, $this->motionY) * 180 / M_PI;
            if ($this->onGround) {
                $this->motionY *= -0.5;
            }
        }
        $this->timings->stopTiming();
        return $hasUpdate or !$this->onGround or abs($this->motionX) > 1.0E-5 or abs($this->motionY) > 1.0E-5 or abs($this->motionZ) > 1.0E-5;
    }