/// <summary>
/// Return the current drop receiver for a particular UI interactor.
/// This is an IDropReceiver object that the UI interactor is currently hovering over while dragging an IDroppable object.
/// </summary>
/// <param name="uiInteractor">A UI interactor from the interaction system.</param>
/// <returns>The IDropReceiver object that is currently being targeted by the interactor. If there is none, returns null.</returns>
public IDropReceiver GetCurrentDropReceiver(IUIInteractor uiInteractor)
{
if (m_DropReceivers.TryGetValue(uiInteractor, out var dropReceiver))
{
return(dropReceiver);
}
return(null);
}
void SetCurrentDropReceiver(IUIInteractor uiInteractor, IDropReceiver dropReceiver)
{
if (dropReceiver == null)
{
m_DropReceivers.Remove(uiInteractor);
}
else
{
m_DropReceivers[uiInteractor] = dropReceiver;
}
}
public RegisteredInteractor(IUIInteractor interactor, int deviceIndex)
{
this.interactor = interactor;
model = new TrackedDeviceModel(deviceIndex);
}
/// <summary>
/// Returns the current droppable data object for a particular UI interactor.
/// This is the generic object data associated with an IDroppable being dragged by the UI interactor.
/// </summary>
/// <param name="uiInteractor">A UI interactor from the interaction system.</param>
/// <returns>The droppable object data from the interactor's current IDroppable. If there is none, returns null.</returns>
public object GetCurrentDropObject(IUIInteractor uiInteractor)
{
return(m_Droppables.TryGetValue(uiInteractor, out var droppable) ? droppable.GetDropObject() : null);
}