movement

<?php

namespace An0ther;

USE pocketmine\math\Vector3;

class Movement{
    PRIVATE $main;
    PRIVATE $motion;

    PUBLIC FUNCTION __construct($main){
        $this->main = $main;
        $this->motion = 0.2;
    }

    PUBLIC FUNCTION fixYaw($entity){
        $yaw = $entity->yaw;
    IF($yaw > 0 && $yaw < 90)
     $yaw = 0;
    IF($yaw > 90 && $yaw < 180)
     $yaw = 90;
    IF($yaw > 180 && $yaw < 270)
     $yaw = 180;
    IF($yaw > 270 && $yaw < 0)
     $yaw = 270;
    RETURN $yaw;
    }

    PUBLIC FUNCTION fixY($entity){
        $y = $entity->getY();
        IF($entity->getLevel()->getBlock(NEW Vector3($entity->getX(),$y - 1,$entity->getZ()))->getId() == 0){
            $y -= 1;
        }
        RETURN $y;
    }

    PUBLIC FUNCTION getForward($entity){
        $yaw = $entity->yaw;
        $x = $entity->getX();
        $y = $this->fixY($entity);
        $z = $entity->getZ();
        switch($yaw){
            CASE 0:
            $z += $this->motion;
            break;
            CASE 90:
            $x -= $this->motion;
            break;
            CASE 180:
            $z -= $this->motion;
            break;
            CASE 270:
            $x += $this->motion;
            break;
        }
ifblock:
IF($this->isBlock($x,$y,$z,$entity->getLevel())){
$y++;
IF($entity->getY() - $y >= 2)
RETURN [$entity->getX(),$entity->getY(),$entity->getZ()];
ELSE
GOTO ifblock;
}
        RETURN [$x,$y,$z];
    }

PUBLIC FUNCTION isBlock($x,$y,$z,$level){
IF($level->getBlock(NEW Vector3($x,$y,$z))->getId() == 0)
RETURN FALSE;
ELSE
RETURN TRUE;
}

  PUBLIC FUNCTION getBack($entity){

    }
}