public GamePadState GetState(int index)
{
JoystickState joy = Joystick.GetState(index);
GamePadState pad = new GamePadState();
if (joy.IsConnected)
{
pad.SetConnected(true);
pad.SetPacketNumber(joy.PacketNumber);
GamePadConfiguration configuration = GetConfiguration(Joystick.GetGuid(index));
foreach (GamePadConfigurationItem map in configuration)
{
switch (map.Source.Type)
{
case ConfigurationType.Axis:
{
// JoystickAxis -> Buttons/GamePadAxes mapping
JoystickAxis source_axis = map.Source.Axis;
short value = joy.GetAxisRaw(source_axis);
switch (map.Target.Type)
{
case ConfigurationType.Axis:
pad.SetAxis(map.Target.Axis, value);
break;
case ConfigurationType.Button:
// Todo: if SDL2 GameController config is ever updated to
// distinguish between negative/positive axes, then remove
// Math.Abs below.
// Button is considered press when the axis is >= 0.5 from center
pad.SetButton(map.Target.Button, Math.Abs(value) >= short.MaxValue >> 1);
break;
}
}
break;
case ConfigurationType.Button:
{
// JoystickButton -> Buttons/GamePadAxes mapping
JoystickButton source_button = map.Source.Button;
bool pressed = joy.GetButton(source_button) == ButtonState.Pressed;
switch (map.Target.Type)
{
case ConfigurationType.Axis:
// Todo: if SDL2 GameController config is ever updated to
// distinguish between negative/positive axes, then update
// the following line to support both.
short value = pressed ?
short.MaxValue :
(map.Target.Axis & (GamePadAxes.LeftTrigger | GamePadAxes.RightTrigger)) != 0 ?
short.MinValue :
(short)0;
pad.SetAxis(map.Target.Axis, value);
break;
case ConfigurationType.Button:
pad.SetButton(map.Target.Button, pressed);
break;
}
}
break;
case ConfigurationType.Hat:
{
// JoystickHat -> Buttons/GamePadAxes mapping
JoystickHat source_hat = map.Source.Hat;
JoystickHatState state = joy.GetHat(source_hat);
bool pressed = false;
switch (map.Source.HatPosition)
{
case HatPosition.Down:
pressed = state.IsDown;
break;
case HatPosition.Up:
pressed = state.IsUp;
break;
case HatPosition.Left:
pressed = state.IsLeft;
break;
case HatPosition.Right:
pressed = state.IsRight;
break;
}
switch (map.Target.Type)
{
case ConfigurationType.Axis:
// Todo: if SDL2 GameController config is ever updated to
// distinguish between negative/positive axes, then update
// the following line to support both.
short value = pressed ?
short.MaxValue :
(map.Target.Axis & (GamePadAxes.LeftTrigger | GamePadAxes.RightTrigger)) != 0 ?
short.MinValue :
(short)0;
pad.SetAxis(map.Target.Axis, value);
break;
case ConfigurationType.Button:
pad.SetButton(map.Target.Button, pressed);
break;
}
}
break;
}
}
}
return(pad);
}