var moveSpeed = 1.0;
var turnSpeed = 1.0;

function Update()
{
if(Input.GetButton("Up"))
{
transform.position.y += moveSpeed;
}
if(Input.GetButton("Down"))
{
transform.position.y += moveSpeed;
}
if(Input.GetButton("Left"))
{
transform.position.x += moveSpeed;
}
if(Input.GetButton("Right"))
{
transform.position.x += moveSpeed;
}
}