/// <summary>
/// Initializes a new instance of the <see cref="DirectInputDevice"/> class.
/// </summary>
/// <param name="deviceInfo">The gaming device information for the specific device to use.</param>
/// <param name="directInput">The direct input interface to use when creating the object.</param>
public DirectInputDevice(DirectInputDeviceInfo deviceInfo, DI.DirectInput directInput)
: base(deviceInfo)
{
_directInput = directInput;
_info = deviceInfo;
_joystick = new Lazy <DI.Joystick>(() => CreateJoystick(directInput, deviceInfo), true);
}
/// <summary>
/// Function to enumerate the gaming devices supported by this driver.
/// </summary>
/// <param name="connectedOnly">[Optional] <b>true</b> to only enumerate devices that are connected, or <b>false</b> to enumerate all devices.</param>
/// <returns>A read only list of gaming device info values.</returns>
/// <remarks>
/// This will return only the devices supported by the driver. In some cases, the driver may not return a complete listing of all gaming devices attached to the system because the underlying provider
/// may not support those device types.
/// </remarks>
public override IReadOnlyList <IGorgonGamingDeviceInfo> EnumerateGamingDevices(bool connectedOnly = false)
{
IList <DI.DeviceInstance> devices = _directInput.Value.GetDevices(DI.DeviceClass.GameControl, DI.DeviceEnumerationFlags.AttachedOnly);
Log.Print("Enumerating DirectInput gaming devices...", LoggingLevel.Verbose);
// Enumerate all controllers.
IReadOnlyList <DirectInputDeviceInfo> result = devices
.Where(item =>
{
bool notXInputController = !IsXInputController(item);
if (!notXInputController)
{
Log.Print("WARNING: Found XInput controller. The Direct Input driver does not support this type of controller. Skipping...", LoggingLevel.Verbose);
return(false);
}
bool isAttached = _directInput.Value.IsDeviceAttached(item.InstanceGuid);
if ((connectedOnly) || (isAttached))
{
return(true);
}
Log.Print("WARNING: Found gaming device '{0}', but it is not attached and enumeration is filtered for attached devices only. Skipping...",
LoggingLevel.Verbose, item.ProductName);
return(false);
})
.Select(item =>
{
var info = new DirectInputDeviceInfo(item);
using (var joystick = new DI.Joystick(_directInput.Value, info.InstanceGuid))
{
info.GetDeviceCaps(joystick);
Log.Print("Found DirectInput gaming device \"{0}\"",
LoggingLevel.Verbose, info.Description);
}
return(info);
})
.ToArray();
return(result);
}
/// <summary>
/// Function to perform the creation of the DirectInput joystick object.
/// </summary>
/// <param name="directInput">The direct input interface.</param>
/// <param name="deviceInfo">The device information for the gaming device to use.</param>
/// <returns>The DirectInput joystick object.</returns>
private DI.Joystick CreateJoystick(DI.DirectInput directInput, DirectInputDeviceInfo deviceInfo)
{
var result = new DI.Joystick(directInput, deviceInfo.InstanceGuid);
IntPtr mainWindow = FindMainApplicationWindow();
if (mainWindow == IntPtr.Zero)
{
// We have no main window, and DI requires one, so we need to kill this.
throw new InvalidOperationException(Resources.GORINP_ERR_DI_COULD_NOT_FIND_APP_WINDOW);
}
result.SetCooperativeLevel(mainWindow, DI.CooperativeLevel.Foreground | DI.CooperativeLevel.NonExclusive);
result.Properties.AxisMode = DI.DeviceAxisMode.Absolute;
// Set up dead zones.
foreach (GorgonGamingDeviceAxis axis in Axis)
{
// Skip the throttle. Dead zones on the throttle don't work too well for regular joysticks.
// Game pads may be another story, but the user can manage those settings if required.
if (axis.Axis == GamingDeviceAxis.Throttle)
{
continue;
}
GorgonGamingDeviceAxisInfo info = Info.AxisInfo[axis.Axis];
DI.ObjectProperties properties = result.GetObjectPropertiesById(_info.AxisMappings[axis.Axis]);
if (properties == null)
{
continue;
}
// Set a 0 dead zone.
properties.DeadZone = 0;
// Make the dead zone 10% of the range for all axes.
float deadZone = axis.Axis == GamingDeviceAxis.Throttle ? 0.02f : 0.10f;
int deadZoneActual = (int)(info.Range.Range * deadZone);
axis.DeadZone = new GorgonRange(info.DefaultValue - deadZoneActual, info.DefaultValue + deadZoneActual);
}
return(result);
}
