Time for action – letting the player move

1. 1. Add the following fields to the declarations area of the CubeChaserGame class:

   float moveScale = 1.5f;
   float rotateScale = MathHelper.PiOver2;

2. 2. Add the following to the Update() method of the CubeChaserGame class:

   float elapsed = (float)gameTime.ElapsedGameTime.TotalSeconds;
   KeyboardState keyState = Keyboard.GetState();
   float moveAmount = 0;
               
   if (keyState.IsKeyDown(Keys.Right))
   {
       camera.Rotation = MathHelper.WrapAngle(
           camera.Rotation - (rotateScale * elapsed));
   }
   
   if (keyState.IsKeyDown(Keys.Left))
   {
       camera.Rotation = MathHelper.WrapAngle(
           camera.Rotation + (rotateScale * elapsed));
   }
   
   if (keyState.IsKeyDown(Keys.Up))
   {
       //camera.MoveForward(moveScale * elapsed);
       moveAmount = moveScale * elapsed;
   }
   
   if (keyState.IsKeyDown(Keys.Down))
   {
       //camera.MoveForward(-moveScale * elapsed);
       moveAmount = -moveScale * elapsed;
   }
   
   if (moveAmount != 0)
   {
       Vector3 newLocation = camera.PreviewMove(moveAmount...