/// <summary>
/// Allows the game to run logic.
/// </summary>
protected override void Update(GameTime gameTime)
{
lastKeyboardState = currentKeyboardState;
lastGamePadState = currentGamePadState;
lastMousState = currentMouseState;
#if WINDOWS_PHONE
currentKeyboardState = new KeyboardState();
#else
currentKeyboardState = Keyboard.GetState();
#endif
currentGamePadState = GamePad.GetState(PlayerIndex.One);
currentMouseState = Mouse.GetState();
// Exit when the Escape key or Back button is pressed
if (currentKeyboardState.IsKeyDown(Keys.Escape) ||
currentGamePadState.Buttons.Back == ButtonState.Pressed)
{
Exit();
}
bool touchTopLeft = currentMouseState.LeftButton == ButtonState.Pressed &&
lastMousState.LeftButton != ButtonState.Pressed &&
currentMouseState.X < GraphicsDevice.Viewport.Width / 10 &&
currentMouseState.Y < GraphicsDevice.Viewport.Height / 10;
// Pressing the A button or key toggles the spring behavior on and off
if (lastKeyboardState.IsKeyUp(Keys.A) &&
(currentKeyboardState.IsKeyDown(Keys.A)) ||
(lastGamePadState.Buttons.A == ButtonState.Released &&
currentGamePadState.Buttons.A == ButtonState.Pressed) ||
touchTopLeft)
{
cameraSpringEnabled = !cameraSpringEnabled;
}
// Pressing the B button or key toggles terrain wireframe on and off
if (lastKeyboardState.IsKeyUp(Keys.B) &&
(currentKeyboardState.IsKeyDown(Keys.B)) ||
(lastGamePadState.Buttons.B == ButtonState.Released &&
currentGamePadState.Buttons.B == ButtonState.Pressed))
{
wireframeEnabled = !wireframeEnabled;
}
// Reset the ship on R key or right thumb stick clicked
if (currentKeyboardState.IsKeyDown(Keys.R) ||
currentGamePadState.Buttons.RightStick == ButtonState.Pressed)
{
ship.Reset();
camera.Reset();
}
// Update the ship
ship.Update(gameTime);
// Update the camera to chase the new target
UpdateCameraChaseTarget();
// The chase camera's update behavior is the springs, but we can
// use the Reset method to have a locked, spring-less camera
if (cameraSpringEnabled)
{
camera.Update(gameTime);
}
else
{
camera.Reset();
}
terrain.Update(gameTime);
base.Update(gameTime);
}
