public bool CheckTrigger(JoystickTrigger trigger)
{
Guid deviceGuid = trigger.GetDeviceInstanceAsGuid();
var cache = this.joysticks.FirstOrDefault <JoyCache>(x => x.JoyStick.Information.InstanceGuid == deviceGuid);
if (cache == null)
{
return(false);
}
if (trigger.Type == JoystickTriggerType.Button)
{
return(cache.LastState.GetButtons()[trigger.ButtonNumber]);
}
else if (trigger.Type == JoystickTriggerType.Axis)
{
int value = JoyInput.GetAxisValue(cache.LastState, trigger.Axis);
if (trigger.AxisPositive)
{
return(value > 49152);
}
else
{
return(value < 16384);
}
}
else if (trigger.Type == JoystickTriggerType.Pov)
{
int[] povValues = cache.LastState.GetPointOfViewControllers();
if (trigger.PovNumber >= povValues.Length)
{
return(false);
}
JoystickTriggerPovDirection direction = this.GetPovDirection(povValues[trigger.PovNumber]);
return(((int)trigger.PovDirection & (int)direction) > 0);
}
return(false);
}
private JoystickTrigger SpotTrigger(Joystick joystick, JoystickState oldState, JoystickState newState)
{
///////////////////////
// Check the buttons
bool[] oldButtons = oldState.GetButtons();
bool[] newButtons = newState.GetButtons();
for (int button = 0; button < joystick.Capabilities.ButtonCount; button++)
{
// it may be pressed, but it only counts if it's newly pressed.
if (newButtons[button] && !oldButtons[button])
{
var newTrigger = new JoystickTrigger();
newTrigger.DeviceInstance = joystick.Information.InstanceGuid.ToString();
newTrigger.Type = JoystickTriggerType.Button;
newTrigger.ButtonNumber = button;
return(newTrigger);
}
}
///////////////////////
// Check each axis
var axi = (JoystickTriggerAxis[])Enum.GetValues(typeof(JoystickTriggerAxis));
foreach (JoystickTriggerAxis axis in axi)
{
int oldAxisValue = JoyInput.GetAxisValue(oldState, axis);
int newAxisValue = JoyInput.GetAxisValue(newState, axis);
if (oldAxisValue != newAxisValue)
{
bool positive;
if (newAxisValue < 16384)
{
positive = false;
}
else if (newAxisValue > 49152)
{
positive = true;
}
else
{
continue; // the axis isn't far enough. Screw em!
}
var newTrigger = new JoystickTrigger();
newTrigger.DeviceInstance = joystick.Information.InstanceGuid.ToString();
newTrigger.Type = JoystickTriggerType.Axis;
newTrigger.Axis = axis;
newTrigger.AxisPositive = positive;
return(newTrigger);
}
}
///////////////////////
// Check each Point-Of-View (POV) thingie.
int[] oldPovs = oldState.GetPointOfViewControllers();
int[] newPovs = newState.GetPointOfViewControllers();
for (int pov = 0; pov < joystick.Capabilities.PovCount; pov++)
{
int newPov = newPovs[pov];
if ((newPov != -1) && (newPov != oldPovs[pov]))
{
JoystickTriggerPovDirection direction;
if (newPov == 0)
{
direction = JoystickTriggerPovDirection.Up;
}
else if (newPov == 9000)
{
direction = JoystickTriggerPovDirection.Right;
}
else if (newPov == 18000)
{
direction = JoystickTriggerPovDirection.Down;
}
else if (newPov == 27000)
{
direction = JoystickTriggerPovDirection.Left;
}
else
{
continue; // we don't accept diagnols here.
}
var newTrigger = new JoystickTrigger();
newTrigger.DeviceInstance = joystick.Information.InstanceGuid.ToString();
newTrigger.Type = JoystickTriggerType.Pov;
newTrigger.PovNumber = pov;
newTrigger.PovDirection = direction;
return(newTrigger);
}
}
// We checked everything. There's no new trigger to be found.
return(null);
}