public override void Update(GameTime gametime)
{
if (InputEngine.IsKeyPressed(Keys.D))
this.Tileposition += new Vector2(1, 0) ;
if (InputEngine.IsKeyPressed(Keys.A))
this.Tileposition += new Vector2(-1, 0);
if (InputEngine.IsKeyPressed(Keys.W))
this.Tileposition += new Vector2(0, -1);
if (InputEngine.IsKeyPressed(Keys.S))
this.Tileposition += new Vector2(0, 1) ;
// Make sure the Cross Hair stays in the bounds see previous lab for details
//position = Vector2.Clamp(position, Vector2.Zero,
// new Vector2(gameScreen.Width - spriteWidth,
// gameScreen.Height - spriteHeight));
base.Update(gametime);
}