JoystickDevice <WinMMJoyDetails> OpenJoystick(int number)
{
JoystickDevice <WinMMJoyDetails> stick = null;
JoyCaps caps;
JoystickError result = UnsafeNativeMethods.joyGetDevCaps(number, out caps, JoyCaps.SizeInBytes);
if (result != JoystickError.NoError)
{
return(null);
}
int num_axes = caps.NumAxes;
if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
{
num_axes += 2;
}
stick = new JoystickDevice <WinMMJoyDetails>(number, num_axes, caps.NumButtons);
stick.Details = new WinMMJoyDetails(num_axes);
// Make sure to reverse the vertical axes, so that +1 points up and -1 points down.
int axis = 0;
if (axis < caps.NumAxes)
{
stick.Details.Min[axis] = caps.XMin; stick.Details.Max[axis] = caps.XMax; axis++;
}
if (axis < caps.NumAxes)
{
stick.Details.Min[axis] = caps.YMax; stick.Details.Max[axis] = caps.YMin; axis++;
}
if (axis < caps.NumAxes)
{
stick.Details.Min[axis] = caps.ZMax; stick.Details.Max[axis] = caps.ZMin; axis++;
}
if (axis < caps.NumAxes)
{
stick.Details.Min[axis] = caps.RMin; stick.Details.Max[axis] = caps.RMax; axis++;
}
if (axis < caps.NumAxes)
{
stick.Details.Min[axis] = caps.UMin; stick.Details.Max[axis] = caps.UMax; axis++;
}
if (axis < caps.NumAxes)
{
stick.Details.Min[axis] = caps.VMax; stick.Details.Max[axis] = caps.VMin; axis++;
}
if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
{
stick.Details.PovType = PovType.Exists;
if ((caps.Capabilities & JoystCapsFlags.HasPov4Dir) != 0)
{
stick.Details.PovType |= PovType.Discrete;
}
if ((caps.Capabilities & JoystCapsFlags.HasPovContinuous) != 0)
{
stick.Details.PovType |= PovType.Continuous;
}
}
#warning "Implement joystick name detection for WinMM."
stick.Description = String.Format("Joystick/Joystick #{0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
// Todo: Try to get the device name from the registry. Oh joy!
//string key_path = String.Format("{0}\\{1}\\{2}", RegistryJoyConfig, caps.RegKey, RegstryJoyCurrent);
//RegistryKey key = Registry.LocalMachine.OpenSubKey(key_path, false);
//if (key == null)
// key = Registry.CurrentUser.OpenSubKey(key_path, false);
//if (key == null)
// stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
//else
//{
// key.Close();
//}
if (stick != null)
{
Debug.Print("Found joystick on device number {0}", number);
}
return(stick);
}
public JoystickState GetState(int player_index)
{
lock (sync)
{
JoystickState state = new JoystickState();
if (IsValid(player_index))
{
int device_index = player_to_index[player_index];
int index = index_to_stick[device_index];
JoystickDevice <WinMMJoyDetails> stick =
sticks[index] as JoystickDevice <WinMMJoyDetails>;
// For joysticks with fewer than three axes or four buttons, we must
// use joyGetPos; otherwise, joyGetPosEx. This is not just a cosmetic
// difference, simple devices will return incorrect results if we use
// joyGetPosEx on them.
if (stick.Details.Capabilities.AxisCount <= 3 || stick.Details.Capabilities.ButtonCount <= 4)
{
// Use joyGetPos
JoyInfo info = new JoyInfo();
JoystickError result = UnsafeNativeMethods.joyGetPos(device_index, ref info);
if (result == JoystickError.NoError)
{
for (int i = 0; i < stick.Details.Capabilities.AxisCount; i++)
{
state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
}
for (int i = 0; i < stick.Details.Capabilities.ButtonCount; i++)
{
state.SetButton(JoystickButton.Button0 + i, (info.Buttons & 1 << i) != 0);
}
state.SetIsConnected(true);
}
else if (result == JoystickError.Unplugged)
{
UnplugJoystick(player_index);
}
}
else
{
// Use joyGetPosEx
JoyInfoEx info = new JoyInfoEx();
info.Size = JoyInfoEx.SizeInBytes;
info.Flags = JoystickFlags.All;
JoystickError result = UnsafeNativeMethods.joyGetPosEx(device_index, ref info);
if (result == JoystickError.NoError)
{
for (int i = 0; i < stick.Details.Capabilities.AxisCount; i++)
{
state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
}
for (int i = 0; i < stick.Details.Capabilities.ButtonCount; i++)
{
state.SetButton(JoystickButton.Button0 + i, (info.Buttons & 1 << i) != 0);
}
state.SetIsConnected(true);
}
else if (result == JoystickError.Unplugged)
{
UnplugJoystick(player_index);
}
}
}
return(state);
}
}
JoystickDevice <WinMMJoyDetails> OpenJoystick(int number)
{
lock (sync)
{
JoystickDevice <WinMMJoyDetails> stick = null;
JoyCaps caps;
JoystickError result = UnsafeNativeMethods.joyGetDevCaps(number, out caps, JoyCaps.SizeInBytes);
if (result == JoystickError.NoError)
{
if (caps.NumAxes > JoystickState.MaxAxes)
{
Debug.Print("[Input] Device has {0} axes, which is higher than OpenTK maximum {1}. Please report a bug at http://www.opentk.com",
caps.NumAxes, JoystickState.MaxAxes);
caps.NumAxes = JoystickState.MaxAxes;
}
if (caps.NumAxes > JoystickState.MaxButtons)
{
Debug.Print("[Input] Device has {0} buttons, which is higher than OpenTK maximum {1}. Please report a bug at http://www.opentk.com",
caps.NumButtons, JoystickState.MaxButtons);
caps.NumButtons = JoystickState.MaxButtons;
}
JoystickCapabilities joycaps = new JoystickCapabilities(
caps.NumAxes,
caps.NumButtons,
(caps.Capabilities & JoystCapsFlags.HasPov) != 0 ? 1 : 0,
true);
int num_axes = caps.NumAxes;
if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
{
num_axes += 2;
}
stick = new JoystickDevice <WinMMJoyDetails>(number, num_axes, caps.NumButtons);
stick.Details = new WinMMJoyDetails(joycaps);
// Make sure to reverse the vertical axes, so that +1 points up and -1 points down.
for (int axis = 0; axis < caps.NumAxes; axis++)
{
stick.Details.Min[axis] = caps.GetMin(axis);
stick.Details.Max[axis] = caps.GetMax(axis);
}
if ((caps.Capabilities & JoystCapsFlags.HasPov) != 0)
{
stick.Details.PovType = PovType.Exists;
if ((caps.Capabilities & JoystCapsFlags.HasPov4Dir) != 0)
{
stick.Details.PovType |= PovType.Discrete;
}
if ((caps.Capabilities & JoystCapsFlags.HasPovContinuous) != 0)
{
stick.Details.PovType |= PovType.Continuous;
}
}
// Todo: Implement joystick name detection for WinMM.
stick.Description = String.Format("Joystick/Joystick #{0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
// Todo: Try to get the device name from the registry. Oh joy!
//string key_path = String.Format("{0}\\{1}\\{2}", RegistryJoyConfig, caps.RegKey, RegstryJoyCurrent);
//RegistryKey key = Registry.LocalMachine.OpenSubKey(key_path, false);
//if (key == null)
// key = Registry.CurrentUser.OpenSubKey(key_path, false);
//if (key == null)
// stick.Description = String.Format("USB Joystick {0} ({1} axes, {2} buttons)", number, stick.Axis.Count, stick.Button.Count);
//else
//{
// key.Close();
//}
Debug.Print("Found joystick on device number {0}", number);
index_to_stick.Add(number, sticks.Count);
player_to_index.Add(player_to_index.Count, number);
sticks.Add(stick);
}
return(stick);
}
}
public JoystickState GetState(int player_index)
{
lock (sync)
{
JoystickState state = new JoystickState();
if (IsValid(player_index))
{
int device_index = player_to_index[player_index];
int index = index_to_stick[device_index];
JoystickDevice <WinMMJoyDetails> stick =
sticks[index] as JoystickDevice <WinMMJoyDetails>;
// For joysticks with fewer than three axes or four buttons, we must
// use joyGetPos; otherwise, joyGetPosEx. This is not just a cosmetic
// difference, simple devices will return incorrect results if we use
// joyGetPosEx on them.
if (stick.Details.Capabilities.AxisCount <= 3 || stick.Details.Capabilities.ButtonCount <= 4)
{
// Use joyGetPos
JoyInfo info = new JoyInfo();
JoystickError result = UnsafeNativeMethods.joyGetPos(device_index, ref info);
if (result == JoystickError.NoError)
{
for (int i = 0; i < stick.Details.Capabilities.AxisCount; i++)
{
state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
}
for (int i = 0; i < stick.Details.Capabilities.ButtonCount; i++)
{
state.SetButton(JoystickButton.Button0 + i, (info.Buttons & 1 << i) != 0);
}
state.SetIsConnected(true);
}
else if (result == JoystickError.Unplugged)
{
UnplugJoystick(player_index);
}
}
else
{
// Use joyGetPosEx
JoyInfoEx info_ex = new JoyInfoEx();
info_ex.Size = JoyInfoEx.SizeInBytes;
info_ex.Flags = JoystickFlags.All;
JoystickError result = UnsafeNativeMethods.joyGetPosEx(device_index, ref info_ex);
if (result == JoystickError.NoError)
{
for (int i = 0; i < stick.Details.Capabilities.AxisCount; i++)
{
state.SetAxis(JoystickAxis.Axis0 + i, CalculateOffset(info_ex.GetAxis(i), stick.Details.Min[i], stick.Details.Max[i]));
}
for (int i = 0; i < stick.Details.Capabilities.ButtonCount; i++)
{
state.SetButton(JoystickButton.Button0 + i, (info_ex.Buttons & 1 << i) != 0);
}
for (int i = 0; i < stick.Details.Capabilities.HatCount; i++)
{
// A discrete POV returns specific values for left, right, etc.
// A continuous POV returns an integer indicating an angle in degrees * 100, e.g. 18000 == 180.00 degrees.
// The vast majority of joysticks have discrete POVs, so we'll treat all of them as discrete for simplicity.
if ((JoystickPovPosition)info_ex.Pov != JoystickPovPosition.Centered)
{
HatPosition hatpos = HatPosition.Centered;
if (info_ex.Pov < 4500 || info_ex.Pov >= 31500)
{
hatpos |= HatPosition.Up;
}
if (info_ex.Pov >= 4500 && info_ex.Pov < 13500)
{
hatpos |= HatPosition.Right;
}
if (info_ex.Pov >= 13500 && info_ex.Pov < 22500)
{
hatpos |= HatPosition.Down;
}
if (info_ex.Pov >= 22500 && info_ex.Pov < 31500)
{
hatpos |= HatPosition.Left;
}
state.SetHat(JoystickHat.Hat0 + i, new JoystickHatState(hatpos));
}
}
state.SetIsConnected(true);
}
else if (result == JoystickError.Unplugged)
{
UnplugJoystick(player_index);
}
}
}
return(state);
}
}
