public void ControllerEventHandler(XInput.GamepadEx state)
{
var newState = ProcessState(state);
if (lastState == null)
{
lastState = newState;
return;
}
if (state.wButtons.HasFlag(XInput.Buttons.A))
{
OnControlChange?.Invoke(Channel.Channel1, Control.AllNotesOff, 0);
}
for (int i = 0; i < 6; i++)
{
if (lastState.Velocities[i] != newState.Velocities[i])
{
newPitches[i] = (byte)(newState.Frets[i] + StandardTuning[i]);
OnNoteOff?.Invoke(Channel.Channel1, (Pitch)lastPitches[i]);
OnNoteOn?.Invoke(Channel.Channel1, (Pitch)newPitches[i], newState.Velocities[i]);
}
}
// swap note buffers
var temp = lastPitches;
lastPitches = newPitches;
newPitches = temp;
// swap guitar state
lastState = newState;
}
public void ControllerEventHandler(XInput.GamepadEx state)
{
var drums = HitDrums(state.wButtons);
SendMessages(drums, state);
drumState = drums;
}
private void PollThread()
{
var sleepTime = TimeSpan.FromMilliseconds(0.5);
while (!cancel)
{
if (!Connected)
{
// Do less while waiting for the controller to come back online.
Thread.Sleep(250);
continue;
}
var state = new XInput.StateEx();
if (0 != XInput.XInputGetStateEx(controllerIndex, ref state))
{
Connected = false;
OnDisconnect?.ThreadSafeInvoke();
continue;
}
var gp = state.Gamepad;
if (gp.bLeftTrigger != lastState.bLeftTrigger ||
gp.bRightTrigger != lastState.bRightTrigger ||
gp.sThumbLX != lastState.sThumbLX ||
gp.sThumbLY != lastState.sThumbLY ||
gp.sThumbRX != lastState.sThumbRX ||
gp.sThumbRY != lastState.sThumbRY ||
gp.wButtons != lastState.wButtons)
{
lastState = gp;
OnStateChanged.ThreadSafeInvoke(lastState);
}
Thread.Sleep(sleepTime);
}
}
public void ControllerEventHandler(XInput.GamepadEx state)
{
var(keys, sustain, velocities) = GamepadToKeyState(state);
if (state.wButtons.HasFlag(XInput.Buttons.DPAD_LEFT))
{
offset = Math.Max(offset - 12, 0);
OnBasePitchChanged.ThreadSafeInvoke((Midi.Enums.Pitch)offset);
}
else if (state.wButtons.HasFlag(XInput.Buttons.DPAD_RIGHT))
{
offset = Math.Min(offset + 12, 127);
OnBasePitchChanged.ThreadSafeInvoke((Midi.Enums.Pitch)offset);
}
SendMessages(keys, sustain, velocities);
sustainState = sustain;
}
public ControllerMonitor(Controller c)
{
var state = new XInput.StateEx();
if (0 != XInput.XInputGetStateEx(c.Index, ref state))
{
throw new Exception($"Controller {c.Index} is not connected");
}
lastState = state.Gamepad;
cancel = false;
controllerIndex = c.Index;
Connected = true;
thread = new Thread(PollThread)
{
Name = $"Controller {c.Index} poll thread"
};
thread.Start();
}
void SendMessages(Drums newState, XInput.GamepadEx state)
{
foreach (Drums d in Enum.GetValues(typeof(Drums)))
{
var note = DrumNoteMap[d](newState);
if (newState.HasFlag(d) && !drumState.HasFlag(d))
{
var velocity = VelocityFunctions[d](state);
if (velocity > 127)
{
velocity = 127;
}
if (velocity < 32)
{
velocity = 32;
}
OnNoteOn?.Invoke(Channel, (Midi.Enums.Pitch)note, velocity);
}
else if (!newState.HasFlag(d) && drumState.HasFlag(d))
{
OnNoteOff?.Invoke(Channel, (Midi.Enums.Pitch)note);
}
}
}
public static (bool[] keys, bool sustain, byte[] velocities) GamepadToKeyState(XInput.GamepadEx state)
{
bool sustain = (state.sThumbRY & 0x80) == 0x80;
var velocities = new byte[] {
(byte)(state.sThumbLX >> 8 & 0x7F),
(byte)(state.sThumbLY & 0x7F),
(byte)(state.sThumbLY >> 8 & 0x7F),
(byte)(state.sThumbRX & 0x7F),
(byte)(state.sThumbRX >> 8 & 0x7F),
};
var keys = new bool[25];
int appended =
(state.bLeftTrigger << 17) |
(state.bRightTrigger << 9) |
((state.sThumbLX & 0xFF) << 1) |
((state.sThumbLX >> 15) & 0x1);
int test = 1 << 24;
int key = 0;
for (var i = 0; i < 25; i++)
{
int mask = test >> i;
keys[key++] = (appended & mask) == mask;
}
#if DEBUG
Console.WriteLine(
$"Keys: {Convert.ToString(appended, 2).PadLeft(25, '0')} " +
$"Sustain: {(sustain ? 1 : 0)} " +
$"Velocities: {velocities.Select(x => x.ToString().PadLeft(3)).Aggregate((x, y) => x + " " + y)} " +
$"State: {(int)state.wButtons:X4}");
#endif
return(keys, sustain, velocities);
}
