unity3D中的错误：解析器错误

我正在尝试在Unity 3D中创建2D游戏，但出现以下错误：

解析错误：仅赋值，调用，递增，递减，等待和新对象表达式可以用作语句

我已按照指南进行操作，但仍然出现错误。

我的代码：

using UnityEngine;
using System.Collections;

public class Movement : MonoBehaviour {

public float maxSpeed = 10f;
bool facingRight = true;

// Use this for initialization
void Start () {

}

// Update is called once per frame
void FixedUpdate () {
    float move = Input.GetAxis ("Horizontal");
    rigidbody2D.velocity = new Vector2 (move * maxSpeed, rigidbody2D.velocity.y);
    if(move > 0 &&! facingRight){
        Flip ();
    }
    else if(move < 0 && facingRight){
        Flip ();
    }
}
void Flip () {
    facingRight != facingRight;
    Vector3 theScale = transform.localScale;
    theScale.x *= -1;
    transform.localScale = theScale;
}
    }