character_controller unity script

using UnityEngine;
using System.Collections;

public class character_controller : MonoBehaviour {

    public float MoveSpeed = 0.2f;

    public bool isGrounded = false;
    public bool facingRight = true;
    public bool canMoveRight = true;
    public bool canMoveLeft = true;
    public bool canJump = true;
    private bool isJumpMoveStoped = false;
    private bool isWalkingSoundPlaying = false;
    private bool isStuck = false;
    private Vector3 lastPosition;
    private int timerforstuck = 0;

    public Vector3 MoveVector;
    private Quaternion FacingVector;

    public Vector2 jumpForce = new Vector2(0, 300);

    void Update () {
        checkMovement();
        checkFacing();
        checkStuck();
        playSound ();
    }

    void checkMovement() {
        if (Input.GetKeyDown(KeyCode.Space)) jump();
        if ((Input.GetAxis("Horizontal") < -0.01 || Input.GetAxis("Horizontal") > 0.01) && isGrounded) move();

        if (!isGrounded)
        {
            if (jumpForce.x != 0 && (!canMoveLeft || !canMoveRight)) {
                isJumpMoveStoped = true;
            } else if (isJumpMoveStoped){
                isJumpMoveStoped = false;
                rigidbody2D.AddForce(new Vector2(50f, 0f));
            }
        }
    }

    void move() {
        if (isGrounded) {
            // Перемещение персонажа вправо-влево
            if (Input.GetAxis ("Horizontal") > 0.01 && canMoveRight) {
                MoveVector.x = Input.GetAxis ("Horizontal") * MoveSpeed;
            } else if (Input.GetAxis ("Horizontal") < 0.01 && canMoveLeft) {
                MoveVector.x = Input.GetAxis ("Horizontal") * MoveSpeed;
            } else {
                MoveVector.x = 0;
            }

            // Направление спрайта персонажа
            if (Input.GetAxis ("Horizontal") > 0.005) facingRight = true;
            if (Input.GetAxis ("Horizontal") < -0.005) facingRight = false;
        }
        transform.position += MoveVector;
    }

    void jump() {
        if(isGrounded && canJump) {
            rigidbody2D.velocity = Vector2.zero;
            jumpForce.x = (facingRight) ? 150f:-150f;
            rigidbody2D.AddForce(jumpForce);
            isGrounded = false;
        } else if (!isGrounded && canJump) {
            jumpForce.x = 0;
        }
    }

    void checkFacing() {
        FacingVector.y = (facingRight) ? 0 : 180;
        transform.rotation = FacingVector;
    }

    void checkStuck()
    {
        timerforstuck++;
        if (timerforstuck == 15)
        {
            if (isStuck)
            {
                Debug.Log(timerforstuck);
                isStuck = false;
                rigidbody2D.fixedAngle = true;
            }
            if (!isGrounded && transform.position == lastPosition)
            {
                Debug.Log("ololo");
                rigidbody2D.fixedAngle = false;
                isStuck = true;
            }
            lastPosition = transform.position;
            timerforstuck = 0;
        }
    }

    void playSound() {
        if (isGrounded) {
            // Проигрывание звуков
            if ((Input.GetAxis ("Horizontal") > 0.005 ||  Input.GetAxis ("Horizontal") < -0.005) && !isWalkingSoundPlaying)
            {
                isWalkingSoundPlaying = true;
                audio.Play();
            }
            if (Input.GetAxis ("Horizontal") < 0.005 &&  Input.GetAxis ("Horizontal") > -0.005) {
                isWalkingSoundPlaying = false;
                audio.Stop();
            }
        } else audio.Stop ();
    }
}