/// <summary>
/// Observes the gamepad for status changes.
/// </summary>
private void ObserveGamepad()
{
uint lastPacketNumber = 0;
XInput.State state = new XInput.State();
XInput.KeyStroke keystroke = new XInput.KeyStroke();
while (!this.StopObserving)
{
XInput.Error result = XInput.GetState((XInput.UserIndex) this.UserIndex, out state);
if (result == XInput.Error.Success && state.packetNumber > lastPacketNumber)
{
lastPacketNumber = state.packetNumber;
this.SetStateFromXInputState(state);
this.RaiseStateChanged();
}
result = XInput.GetKeystroke((XInput.UserIndex) this.UserIndex, out keystroke);
if (result == XInput.Error.Success)
{
if (keystroke.flags == XInput.KeyStrokeFlags.KeyUp)
{
this.RaiseKeyUp((KeyEventArgs.KeyCode)keystroke.virtualKey);
}
if (keystroke.flags == XInput.KeyStrokeFlags.KeyDown)
{
this.RaiseKeyDown((KeyEventArgs.KeyCode)keystroke.virtualKey);
}
}
Thread.Sleep(2);
}
}
/// <summary>
/// Creates a new <see cref="Gamepad"/> instance from an xinput state structure.
/// </summary>
/// <param name="index">The controller number. Can be in the range of 0 to 3.</param>
/// <param name="state">The current state of the gamepad.</param>
private Gamepad(XInput.State state, XInput.UserIndex index)
{
this.LeftThumbDeadzone = XInput.Gamepad.LeftThumbDeadzone / (double)thumbMaxValue;
this.RightThumbDeadzone = XInput.Gamepad.RightThumbDeadzone / (double)thumbMaxValue;
this.LeftTriggerThreshold = XInput.Gamepad.TriggerThreshold / (double)triggerMaxValue;
this.RightTriggerThreshold = XInput.Gamepad.TriggerThreshold / (double)triggerMaxValue;
this.UserIndex = (int)index;
this.StartObserverThread();
}
/// <summary>
/// Collects all the connected xinput gamepads.
/// </summary>
/// <returns>A list of all connected devices.</returns>
public static List <Gamepad> GetConnectedDevices()
{
List <Gamepad> gamepads = new List <Gamepad>();
for (XInput.UserIndex userIndex = 0; userIndex < XInput.UserIndex.MaxCount; userIndex++)
{
XInput.State state = new XInput.State();
XInput.Error result = XInput.GetState(userIndex, out state);
if (result == XInput.Error.Success)
{
gamepads.Add(new Gamepad(state, userIndex));
}
}
return(gamepads);
}
/// <summary>
/// Sets the state of the <see cref="Gamepad"/> instance from an XInput.State object.
/// </summary>
/// <param name="state">The raw input state.</param>
private void SetStateFromXInputState(XInput.State state)
{
this.A = state.gamepad.isButtonPressed(XInput.GamepadButtons.A);
this.B = state.gamepad.isButtonPressed(XInput.GamepadButtons.B);
this.X = state.gamepad.isButtonPressed(XInput.GamepadButtons.X);
this.Y = state.gamepad.isButtonPressed(XInput.GamepadButtons.Y);
this.L = state.gamepad.isButtonPressed(XInput.GamepadButtons.LeftShoulder);
this.R = state.gamepad.isButtonPressed(XInput.GamepadButtons.RightShoulder);
this.Start = state.gamepad.isButtonPressed(XInput.GamepadButtons.Start);
this.Back = state.gamepad.isButtonPressed(XInput.GamepadButtons.Back);
this.LeftThumbPress = state.gamepad.isButtonPressed(XInput.GamepadButtons.LeftThumb);
this.RightThumbPress = state.gamepad.isButtonPressed(XInput.GamepadButtons.RightThumb);
this.DPadUp = state.gamepad.isButtonPressed(XInput.GamepadButtons.DPadUp);
this.DPadDown = state.gamepad.isButtonPressed(XInput.GamepadButtons.DPadDown);
this.DPadLeft = state.gamepad.isButtonPressed(XInput.GamepadButtons.DPadLeft);
this.DPadRight = state.gamepad.isButtonPressed(XInput.GamepadButtons.DPadRight);
this.LeftThumbXUnfiltered = state.gamepad.leftThumbX / (double)thumbMaxValue;
this.LeftThumbYUnfiltered = state.gamepad.leftThumbY / (double)thumbMaxValue;
this.RightThumbXUnfiltered = state.gamepad.rightThumbX / (double)thumbMaxValue;
this.RightThumbYUnfiltered = state.gamepad.rightThumbY / (double)thumbMaxValue;
this.LeftTriggerUnfiltered = state.gamepad.leftTrigger / (double)triggerMaxValue;
this.RightTriggerUnfiltered = state.gamepad.rightTrigger / (double)triggerMaxValue;
}