Scripting 2D melee script

#pragma strict
var Anim : Animator;
var MaxSpeed : float = 5.0f;
var MoveForce : float = 356.0f;
var Direction : boolean = false;
private var Health : int = 10;
var Shoot : boolean = false;
var Grounded : boolean;
var GroundChecker : Transform;
var Jumpforce : int = 1000;
var Attack : boolean = false;
var Jump : boolean = false;
var MoveMulti : int = 0;

function Update () {
Grounded = Physics2D.Linecast(transform.position , GroundChecker.position, 1<<LayerMask.NameToLayer("Ground")); //Takes start vector 3 position, end vetor 3 position, layer number, layer mask name returns true if hit something

if (Input.GetButtonDown("Jump") Grounded) //if groudned and space pressed do code
{
Jump = true;
}
}

function FixedUpdate (){

var H : float = Input.GetAxis ("Horizontal"); //H = horizontal key input 0 - 1

if (H > 0.1 Input.GetKey(KeyCode.LeftShift))
{
MaxSpeed = 10;
}
else if (H < 0.1 Input.GetKey(KeyCode.LeftShift))
{
MaxSpeed = 10;
}
else if(!Input.GetKey(KeyCode.LeftShift))
{
MaxSpeed = 5;
}



if(Input.GetKey(KeyCode.LeftShift))
{

Anim.SetBool ("Run",true);
}
else
{
Anim.SetBool ("Run",false);
}

Anim.SetFloat ("Walk",Mathf.Abs (H)); //Sets Run parameter to absolute value of H horizontal 0-1

if(H*rigidbody2D.velocity.x <MaxSpeed){ // if H is 0 then times = 0 so doesnt run if has value it rusn = checks if key down but with math smart ay
rigidbody2D.AddForce(Vector2.right*H*MoveForce); // same as above but actualy adds velocity if not H 0
}

if(Mathf.Abs(rigidbody2D.velocity.x)>MaxSpeed)
{
rigidbody2D.velocity = new Vector2 (Mathf.Sign(rigidbody2D.velocity.x)*MaxSpeed, rigidbody2D.velocity.y);
}

//tests flipping using 0-1 and 0- -1 and boolean Direction to see if facing right or left
if(H < 0 !Direction)
{
Flip();
}
else if (H > 0 Direction)
{
Flip();
}

if(Jump)
{
rigidbody2D.AddForce (new Vector2(0f, Jumpforce)); // adds jumpforce to y x is 0
Anim.SetBool("Jump", true);
Jump = false;
StopJump();
}
}

function Flip()
{
Direction = !Direction;
var TheScale : Vector3 = transform.localScale; // Takes local objects transform as new vector3

TheScale.x *=-1;
transform.localScale = TheScale;
}

function StopJump()
{
yield WaitForSeconds (0.8);
Anim.SetBool("Jump", false);

}