private void FireEvents(State previous, State current)
{
if (StateChanged != null)
{
StateChanged(this, previous, current);
}
ControllerButtons[] buttons = (ControllerButtons[])Enum.GetValues(typeof(ControllerButtons));
foreach (ControllerButtons button in buttons)
{
bool wasPressed = (previous.Gamepad.Buttons & button) != 0;
bool isPressed = (current.Gamepad.Buttons & button) != 0;
if (!wasPressed && isPressed)
{
if (ButtonDown != null)
{
ButtonDown(this, button);
}
}
if (wasPressed & !isPressed)
{
if (ButtonUp != null)
{
ButtonUp(this, button);
}
}
}
}
internal static extern int GetState(int dwUserIndex, ref State pState);
/// <summary>
/// Invoked by the static background thread in XInput to
/// poll state and fire events when needed.
/// </summary>
internal void PollForEvents()
{
if (PollState())
{
// make sure we have a lastState available
if (!firstEventPoll)
{
// make sure our new state isn't some delayed packet
if (state.PacketNumber > lastState.PacketNumber)
{
if (!state.Equals(lastState))
{
FireEvents(lastState, state);
}
}
}
lastState = this.state;
firstEventPoll = false;
}
}