/// <summary>
/// verify if a gamepad is connected, if it is then check which buttons are pressed and the directions of the thumb sticks,
/// if no gamepad is connected change the timer to 1 every 5 seconds
/// </summary>
/// <param name="sender"></param>
/// <param name="eventArgs"></param>
static void CheckGamepad(object?sender, EventArgs eventArgs)
{
try
{
//Console.WriteLine("checked for gamepad input");
switch (XInputGetState(0, out CurrentState))
{
case ERROR_SUCCESS:
{
// if a controller was just connected go back to checking for input ~60 times per second
if (frameTimer.Interval == 5000)
{
frameTimer.Interval = 15;
}
if (CurrentState.dwPacketNumber != LastState.dwPacketNumber)
{
var listOfButtonPresses = new List <string>();
//apply the bitmask for each button and take it as a press only if the result is not equal to 0 and if the previous state was equal to 0
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_UP) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_UP) == 0)
{
listOfButtonPresses.Add("D_pad_up");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_DOWN) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_DOWN) == 0)
{
listOfButtonPresses.Add("D_pad_down");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_RIGHT) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_RIGHT) == 0)
{
listOfButtonPresses.Add("D_pad_right");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_LEFT) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_DPAD_LEFT) == 0)
{
listOfButtonPresses.Add("D_pad_left");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_START) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_START) == 0)
{
listOfButtonPresses.Add("start");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_BACK) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_BACK) == 0)
{
listOfButtonPresses.Add("back");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_SHOULDER) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_SHOULDER) == 0)
{
listOfButtonPresses.Add("left_shoulder");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_SHOULDER) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_SHOULDER) == 0)
{
listOfButtonPresses.Add("right_shoulder");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_THUMB) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_LEFT_THUMB) == 0)
{
listOfButtonPresses.Add("left_thumb");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_THUMB) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_RIGHT_THUMB) == 0)
{
listOfButtonPresses.Add("right_thumb");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_A) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_A) == 0)
{
listOfButtonPresses.Add("a");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_B) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_B) == 0)
{
listOfButtonPresses.Add("b");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_X) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_X) == 0)
{
listOfButtonPresses.Add("x");
}
if ((CurrentState.Gamepad.wButtons & XINPUT_GAMEPAD_Y) != 0 &&
(LastState.Gamepad.wButtons & XINPUT_GAMEPAD_Y) == 0)
{
listOfButtonPresses.Add("y");
}
if (CurrentState.Gamepad.bLeftTrigger > XINPUT_GAMEPAD_TRIGGER_THRESHOLD &&
LastState.Gamepad.bLeftTrigger < XINPUT_GAMEPAD_TRIGGER_THRESHOLD)
{
listOfButtonPresses.Add("left_trigger");
}
if (CurrentState.Gamepad.bRightTrigger > XINPUT_GAMEPAD_TRIGGER_THRESHOLD &&
LastState.Gamepad.bRightTrigger < XINPUT_GAMEPAD_TRIGGER_THRESHOLD)
{
listOfButtonPresses.Add("right_trigger");
}
//take care of the cases where the absolute would underflow
if (CurrentState.Gamepad.sThumbLY == short.MinValue)
{
CurrentState.Gamepad.sThumbLY = short.MinValue + 2;
}
if (CurrentState.Gamepad.sThumbLX == short.MinValue)
{
CurrentState.Gamepad.sThumbLX = short.MinValue + 2;
}
var directionL = MouseHookClass.MovementDirection(
new Point(CurrentState.Gamepad.sThumbLX, CurrentState.Gamepad.sThumbLY),
new Point(0, 0));
// update the direction of the left thumb stick only if it is outside of the dead zone and the previous state was inside the dead zone
// or if the direction is different
if ((Math.Abs(CurrentState.Gamepad.sThumbLY) > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE ||
Math.Abs(CurrentState.Gamepad.sThumbLX) > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) &&
!(Math.Abs(LastState.Gamepad.sThumbLY) > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE ||
Math.Abs(LastState.Gamepad.sThumbLX) > XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE) || (directionL != null && directionL != LastDirectionL))
{
if (directionL != null)
{
listOfButtonPresses.Add("left_thumb_move_" + directionL);
LastDirectionL = directionL;
}
}
//take care of the cases where the absolute would underflow
if (CurrentState.Gamepad.sThumbRY == short.MinValue)
{
CurrentState.Gamepad.sThumbRY = short.MinValue + 2;
}
if (CurrentState.Gamepad.sThumbRX == short.MinValue)
{
CurrentState.Gamepad.sThumbRX = short.MinValue + 2;
}
var directionR = MouseHookClass.MovementDirection(
new Point(CurrentState.Gamepad.sThumbRX, CurrentState.Gamepad.sThumbRY),
new Point(0, 0));
// update the direction of the right thumb stick only if it is outside of the dead zone and the previous state was inside the dead zone
// or if the direction is different
if ((Math.Abs(CurrentState.Gamepad.sThumbRX) > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE ||
Math.Abs(CurrentState.Gamepad.sThumbRY) > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) &&
!(Math.Abs(LastState.Gamepad.sThumbRX) > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE ||
Math.Abs(LastState.Gamepad.sThumbRY) > XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) || (directionR != null && directionR != LastDirectionR))
{
if (directionR != null)
{
listOfButtonPresses.Add("right_thumb_move_" + directionR);
LastDirectionR = directionR;
}
}
if (listOfButtonPresses.Count > 0)
{
ProfileManager.GamepadInputUpdate(listOfButtonPresses);
}
LastState = CurrentState;
}
break;
}
case ERROR_DEVICE_NOT_CONNECTED:
{
// if no gamepad is connected then search for input only once every 5 seconds
if (frameTimer.Interval != 5000)
{
frameTimer.Interval = 5000;
}
break;
}
}
}
catch (Exception e)
{
if (e is ChainingException exception)
{
exception.AddErrorToChain("While trying to read gamepad input");
}
else
{
exception = new ChainingException(e.Message);
exception.AddErrorToChain("While trying to read gamepad input");
}
throw exception;
}
}
private static extern uint XInputGetState(uint dwUserIndex, out _XINPUT_STATE pState);
