/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
#if PROFILE
elapsedTime += gameTime.ElapsedGameTime;
if (elapsedTime > TimeSpan.FromMilliseconds(1))
{
elapsedTime -= TimeSpan.FromSeconds(1);
frameRate = frameCounter;
frameCounter = 0;
}
if (GamePad.GetState(PlayerIndex.One).DPad.Up == ButtonState.Pressed)
{
Thread.Sleep(5);
}
if (GamePad.GetState(PlayerIndex.One).DPad.Down == ButtonState.Pressed)
{
return;
}
#endif
#if WINDOWS
#if DEBUG
// Allows the game to exit; win32 only
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
{
this.Exit();
}
#endif
#endif
if (exitGame)
{
this.Exit();
}
if (!(preloadedAssets && preloadedJSon))
{
InputDevice2.Update(gameTime);
if (InputDevice2.IsAnyControllerButtonDown(InputDevice2.PlayerButton.RightDirection) != InputDevice2.PlayerPad.NoPad)
{
shipRotation += 0.02f;
}
else if (InputDevice2.IsAnyControllerButtonDown(InputDevice2.PlayerButton.LeftDirection) != InputDevice2.PlayerPad.NoPad)
{
shipRotation -= 0.02f;
}
if (InputDevice2.IsAnyControllerButtonDown(InputDevice2.PlayerButton.Confirm) != InputDevice2.PlayerPad.NoPad)
{
shipVelocity += new Vector2((float)(Math.Cos(shipRotation)), (float)(Math.Sin(shipRotation))) * shipThrust;
shipVelocity = Vector2.Clamp(shipVelocity, new Vector2(-0.91f), new Vector2(0.91f));
}
shipPosition += shipVelocity * gameTime.ElapsedGameTime.Milliseconds;
shipVelocity *= 0.99f;
if (shipPosition.X < -1850)
{
shipPosition.X = 1850;
}
if (shipPosition.X > 1850)
{
shipPosition.X = -1850;
}
if (shipPosition.Y < -1300)
{
shipPosition.Y = 1300;
}
if (shipPosition.Y > 1300)
{
shipPosition.Y = -1300;
}
return;
}
gameIsRunningSlowly = gameTime.IsRunningSlowly;
if (currentGameScreen.IsComplete)
{
currentGameScreen = ScreenState.SwitchToNewScreen(currentGameScreen.nextLevelState());
}
InputDevice2.Update(gameTime);
currentGameScreen.update(gameTime);
base.Update(gameTime);
}