/// <summary>
/// Updates the Joystick state by applying the given event.
/// </summary>
/// <param name="e">The event to apply to the state.</param>
private void UpdateState(JoystickEventArgs e)
{
if (e.IsButtonEvent)
{
if (ButtonStates.ContainsKey(e.Button))
{
ButtonStates[e.Button] = e.IsPressed;
}
else
{
ButtonStates.Add(e.Button, e.IsPressed);
}
}
else
{
if (AxisValues.ContainsKey(e.Axis))
{
AxisValues[e.Axis] = e.Value;
}
else
{
AxisValues.Add(e.Axis, e.Value);
}
}
}
/// <summary>
/// Reads from the joystick input stream and enques events to the internal event queue.
/// </summary>
private void JoystickInputThread()
{
using (FileStream inputStream = new FileStream(deviceFile, FileMode.Open))
{
// Read and process in blocks of 8 bytes.
byte[] buff = new byte[8];
while (running)
{
inputStream.Read(buff, 0, 8);
JoystickEventArgs joystickEvent = DecodeJoystickEvent(buff);
if (joystickEvent != null)
{
changes.Enqueue(joystickEvent);
}
}
}
}
/// <summary>
/// Processes events received from the joystick I/O thread.
/// </summary>
public void ProcessEvents()
{
JoystickEventArgs e = null;
while (!changes.IsEmpty)
{
if (changes.TryDequeue(out e))
{
UpdateState(e);
// If there are subscriptions to the event, raise the event.
if (InputReceived != null)
{
InputReceived(this, e);
}
}
}
}