private static void OnActionTriggered(object obj, InputActionChange change)
{
if (change != InputActionChange.ActionTriggered)
{
return;
}
////REVIEW: filter for noise here?
// Grab control that triggered the action.
var action = (InputAction)obj;
var control = action.lastTriggerControl;
if (control == null)
{
return;
}
// See if it's coming from a device not belonging to any user.
var device = control.device;
if (ArrayHelpers.ContainsReferenceTo(s_AllDevices, s_AllDeviceCount, device))
{
// No, it's a device already assigned to a player so do nothing.
return;
}
// Ok, we know it's a device not assigned to a user and it triggered action. The only
// thing that remains is to determine whether it was from an action assigned to a user.
var userIndex = -1;
for (var i = 0; i < s_AllUserCount; ++i)
{
var actions = s_AllUserData[i].actions;
if (actions != null && actions.Contains(action))
{
userIndex = i;
break;
}
}
if (userIndex != -1)
{
var user = s_AllUsers[userIndex];
for (var i = 0; i < s_OnUnassignedDeviceUsed.length; ++i)
{
s_OnUnassignedDeviceUsed[i](user, action, control);
}
}
}
/// <summary>
/// Return a list of all currently added devices that are not assigned to any user.
/// </summary>
/// <returns>A (possibly empty) list of devices that are currently not assigned to a user.</returns>
/// <seealso cref="InputSystem.devices"/>
/// <seealso cref="InputUser.AssignInputDevice"/>
/// <remarks>
/// The resulting list uses <see cref="Allocator.Temp"> temporary, unmanaged memory</see>. If not disposed of
/// explicitly, the list will automatically be deallocated at the end of the frame and will become unusable.
/// </remarks>
public static InputControlList <InputDevice> GetUnassignedInputDevices()
{
var unusedDevices = new InputControlList <InputDevice>(Allocator.Temp);
foreach (var device in InputSystem.devices)
{
// If it's in s_AllDevices, there is *some* user that is using the device.
// We don't care which one it is here.
if (ArrayHelpers.ContainsReferenceTo(s_AllDevices, s_AllDeviceCount, device))
{
continue;
}
unusedDevices.Add(device);
}
return(unusedDevices);
}