/// <summary>
/// Releases the unmanaged resources used by the AccelerometerInput and optionally
/// releases the managed resources.
/// </summary>
/// <param name="disposing">true to release both managed and unmanaged resources; false to release only unmanaged resources.</param>
protected override void Dispose(bool disposing)
{
if (!isDisposed)
{
if (disposing)
{
// Properly dispose of the accelerometer
try
{
if (accelerometer != null)
{
lock (accelerometerDataLock)
{
// Always unregister event handlers to avoid a zombie objects, even where you're sure it'll die anyway.
accelerometer.ReadingChanged -= accelerometer_ReadingChanged;
accelerometer.Dispose();
accelerometer = null;
}
}
}
catch
{
// Goonies never say die and Dispose never throws exceptions!
}
}
_instance = null;
isDisposed = true;
}
try
{
base.Dispose(disposing);
}
catch
{
}
}
/// <summary>
/// The constructor for this game component. Do not create more than one instance of this.
/// </summary>
/// <param name="game">The game this component is being created for.</param>
/// <exception cref="InvalidOperationException">Thrown when you try to create more than one instance of this game component.</exception>
public AccelerometerInput(Game game)
: base(game)
{
// Create the accelerometer data queue. We create it with numberOfReadingsToAverage + 1 so that
// we can just add readings and then if it's over the count, dequeue the first one without creating
// any allocations.
accelerometerDataQueue = new Queue<Vector3>(numberOfReadingsToAverage + 1);
adjustedAccelerometerDataQueue = new Queue<Vector2>(numberOfReadingsToAverage + 1);
// Create our accelerometer instance
accelerometer = new Accelerometer();
// Hook up the ReadingChanged event handler.
accelerometer.ReadingChanged += new EventHandler<AccelerometerReadingEventArgs>(accelerometer_ReadingChanged);
if (_instance != null)
{
throw new InvalidOperationException("You must only have one instance of this game component. You have tried to create a second one.");
}
_instance = this;
}
