public override IEnumerable <ComponentUpdate> Tick(SimState state, IEnumerable <IEvent> events)
{
List <ComponentUpdate> updates = new List <ComponentUpdate>();
if (!events.Any())
{
return(Enumerable.Empty <ComponentUpdate>());
}
IEnumerable <SimSelectable> selectables = state.GetComponents <SimSelectable>();
foreach (SelectionUpdatedEvent @event in events.Where(e => e.GetType() == typeof(SelectionUpdatedEvent)))
{
if (@event.Action == SelectAction.Cleared)
{
// Deselect everything
foreach (SimSelectable clearSelectable in selectables)
{
AddUpdate(ref updates, clearSelectable, false);
}
continue;
}
SimSelectable selectable = selectables.First(s => s.EntityID == @event.EntityID);
if (@event.Action == SelectAction.Selected || @event.Action == SelectAction.Deselected)
{
bool select = (@event.Action == SelectAction.Selected);
AddUpdate(ref updates, selectable, select);
}
}
return(updates);
}
private void AddUpdate(ref List <ComponentUpdate> updates, SimSelectable selectable, bool newSelectVal)
{
if (selectable.Selected != newSelectVal)
{
SimSelectable newSelectable = selectable.Clone() as SimSelectable;
newSelectable.Selected = newSelectVal;
updates.Add(new ComponentUpdate(newSelectable));
}
}