/// <summary>
/// Update the game world.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
GamePadState gpState = GamePad.GetState(PlayerIndex.One);
KeyboardState kbState = Keyboard.GetState();
// Check for exit
if ((gpState.Buttons.Back == ButtonState.Pressed) ||
kbState.IsKeyDown(Keys.Escape))
{
Exit();
}
// Handle inputs for the sample camera
camera.HandleDefaultGamepadControls(gpState, gameTime);
camera.HandleDefaultKeyboardControls(kbState, gameTime);
// Handle inputs specific to this sample
HandleInput(gameTime, gpState, kbState);
// The built-in camera class provides the view matrix
grid.ViewMatrix = camera.ViewMatrix;
// The camera position should also be updated for the
// Phong specular component to be meaningful
cameraPositionParameter[activeEffect].SetValue(camera.Position);
// replace the "last" gamepad and keyboard states
lastGpState = gpState;
lastKbState = kbState;
base.Update(gameTime);
}
